Compound as SMARCA2 inhibitor and application thereof

The invention belongs to the field of medical chemistry, relates to a compound serving as an SMARCA2 inhibitor and application of the compound, and particularly provides a compound shown in a formula (I) or an isomer, pharmaceutically acceptable salt, solvate, crystal or prodrug of the compound. Processes for their preparation, pharmaceutical compositions containing these compounds and the use of these compounds or compositions for the treatment of SMARCA2 and/or SMARCA4 mediated diseases, such as cancer.

Asphalt mixture design method based on pavement use performance

The invention discloses an asphalt mixture design method based on pavement use performance, belongs to the technical field of road engineering, and aims to overcome the defect of separation of structural design and material design of a Marshall asphalt mixture design method, realize organic unification of a pavement structure and materials and improve the pavement use performance. According to the adopted technical scheme, the method comprises the following specific steps: S1, carrying out an experiment for measuring related indexes of the pavement use performance on a laboratory forming test piece; s2, performing a pavement performance experiment on the basis of meeting the performance indexes related to the pavement use performance; s3, analyzing and judging whether standard requirements are met or not according to road performance experiment results: (1) if yes, executing the step S4; (2) if not, skipping to the step S1; s4, optimizing the design of the asphalt mixture according to the ...

A Method for Promoting the Sprouting of Cotton Under the Low-Temperature Stress

The invention relates to the field of seedling culture, in particular to a method for promoting the sprouting of cotton under the low-temperature stress. The method comprises the following steps: soaking cotton seeds by adopting a brassinolide solution; sowing the soaked seeds in a low-temperature stress environment, germinating to obtain seedlings. According to the method in the invention, the exogenous brassinolactone (EBR) is adopted to soak the seeds so as to promote the germination of the cotton seeds at a low-temperature, thereby the emergence rate can be increased; and the method is simple, easy, apparent in effect and large in application potential, and can effectively alleviate the harm of low temperature on the germination and seedling of the cotton, and improve the cold resistance of the cotton.

Preparation method of furnace bottom roller graphite carbon sleeve impregnating solution

The invention relates to a preparation method of a furnace bottom roller graphite carbon sleeve impregnating solution, belonging to the technical field of graphite carbon product processing. Raw materials include water, polyphosphate, polymetaphosphate, inorganic additives, active additives, dispersing agents and trace additives. When in use, a graphite product (2) is heated to reach 300-500 DEG C, and the heated graphite product (2) is impregnated into an impregnating solution inside a pressurized impregnating device (3) for 18-30 hours at the temperature of 70-120 DEG C and the pressure of 0.4-0.6 MPa while the graphite product (2) is hot. The invention has the advantages of simple process and convenience for operation and is beneficial to the industrial implementation.

Assembly type grasping and pressing hemostasis bionic hand

The invention discloses an assembled grasping, pressing and hemostasis bionic hand which comprises a grasping assembly, a pressure applying assembly and a hemostasis assembly, and the grasping assembly comprises a clamp type clamping unit to complete grasping action; a fixing structure is arranged on the side, facing the skin of the patient, of the clamping unit, and the fixing structure is detachably connected with the clamping unit, so that the clamping unit can be fixed to the skin of the patient; a locking unit is arranged at the end, away from the fixing structure, of the clamping unit and used for locking the opening angle of the clamping unit. The inflating and pressurizing assembly is arranged on the side, facing the skin of the patient, of the clamping unit; the inflating and pressurizing assembly is detachably connected with the clamping unit, so that the inflating and pressurizing assembly is selectively mounted on the two arms of the clamping unit.

Method for preventing and treating fatigue cracking of asphalt pavement in whole process

The invention discloses a method for preventing and treating fatigue cracking of an asphalt pavement in the whole process, belongs to the technical field of road engineering, and aims to solve the technical problems of how to improve the fatigue cracking resistance of the asphalt pavement and prolong the fatigue life of the asphalt pavement. According to the technical scheme, the method comprises the following specific steps: S1, a design stage: initially simulating pavement structure combination and the thickness of each structure layer according to traffic parameters, roadbed soil texture, top surface equivalent resilience modulus, humidity, temperature and other influence factors, and carrying out anti-fatigue cracking design according to complex stress response of load and temperature; s2, a construction stage: during construction, strictly controlling the quality of construction materials, and adopting various measures to improve the anti-fatigue capability of the pavement; and S3, ...

Block chain alliance establishment method and device

The invention provides a block chain alliance establishment method and device. The method comprises the steps that a BaaS platform configures access information of a first member organization accessing a block chain alliance through a display interface; a configuration file required by a container cloud platform corresponding to the first member organization is generated and exported according to the access information, the configuration file is used for importing the container cloud platform to enable the container cloud platform to create resources, and node services of the first member organization are deployed according to the resources; establishing a block chain alliance with the first member organization according to the node service, namely, configuring and generating block chain nodes and network configuration information through a BaaS platform; according to the configuration information, building of the block chain alliance service is realized on the container cloud platform, ...

Snowmobile sleigh track transformation system

The invention relates to the technical field of building structures, in particular to a snowmobile sleigh track transformation system oriented to public experience and entertainment. The snowmobile sleigh racing track transformation system comprises a transformation track which is erected on a concrete layer of a snowmobile sleigh standard racing track; the snowmobile sled vehicle body comprises a vehicle body, a guiding system and a braking system, wherein the guiding system and the braking system are arranged on the vehicle body and connected with the transformed rail in a matched mode. The method can effectively solve the problem of insufficient function expansion and utilization of the standard racing track of the snowmobile and the sleigh after racing, meets the requirement of the national racing track of the snowmobile and the sleigh center for public open experience, solves the problem that the operation and maintenance cost is too high after racing in a venue, and solves the problem ...

METHOD FOR SCREENING COLD-RESISTANT COTTON VARIETIES AND APPLICATION THEREOF

The invention discloses a method for screening cold-resistant cotton varieties and application thereof. The method comprises the following steps of (1) seeding cotton seeds of different varieties; after the seeding for two days, realizing young seedling emergence; removing young seedlings with nonuniform growth conditions in the fourth day; maintaining the continuous growth of other young seedlings; (2) realizing flat spreading of cotyledons after the young seedlings grow to the seventh day; performing cold adaptation on the young seedlings; then, performing cold treatment; next, performing hot adaptation and restoration treatment; counting the survival rate and counting the cotyledon cold damage level; next, calculating the form index; testing the relative electrical conductivity of detached leaves when the cold treatment is performed for 72 hours; and evaluating the cold resistance according to the form index or the relative electrical conductivity.

Cotton hydroponics device

The present invention relates to a cotton hydroponics device, including a seedling emergence sub-device, a cotton seedling cultivation sub-device and an upper cover provided 5 with a first set number of cotton seedling holes; the seedling emergence sub-device includes a base and nutrient soil; the base has a concave structure, and the nutrient soil is placed in a groove of the base; the cotton seedling cultivation sub-device includes a cultivating box containing nutrient solution; the upper cover is placed above the base and completely covers the base; the base is used for cultivating cotton seeds into cotton seedlings; a first set number of J cotton seeds are placed in the nutrient soil, and the cotton seeds are placed in positions corresponding to the cotton seedling holes of the upper cover to ensure that the cotton seedlings grow through the cotton seedling holes; the upper cover with the cotton seedlings is placed above the cultivating box, and the upper cover completely covers the ...

Method for preparing ceramic powder containing beta-Sialon by using silt sand

The invention relates to a method for preparing ceramic powder containing beta-Sialon by using silt sand, belonging to the technical field of integrated utilization of ceramic and refractory materials and solid wastes. The method takes water conservation solid waste silt sand as a main raw material, adds appropriate amount of alumina, matches reductant carbon and adds appropriate amount of binding agent, mixing and ball milling are carried out, then the mixture is arranged in a die for machine pressing and forming, a green body is arranged in a tubular furnace, coke is buried, the sintering is carried out under a flowing nitrogen atmosphere, a sintered product is smashed, and then the carbon is removed, thereby obtaining the ceramic powder containing the beta-Sialon, the main ingredient thereof is beta-Sialon or beta-Sialon-Al2O3. The method is simple, the preparation conditions are easy to control, and the obtained product is purer. The prepared material can be widely applied in metallurgy ...

Polyester composition, preparation method and application thereof, and optical reflective film

The invention relates to the field of polyester compositions, and discloses a polyester composition as well as a preparation method and application thereof. The polyester composition comprises polyester, maleic anhydride copolymer microspheres and an auxiliary agent, on the basis that the use amount of the polyester is 100 parts, the use amount of the maleic anhydride copolymer microspheres is 10-60 parts, and the use amount of the auxiliary agent is 0.1-15 parts; the average particle size of the maleic anhydride copolymer microspheres is 500 to 1600 nm. The composition contains the maleic anhydride copolymer microspheres with uniform particle size distribution, can be well dispersed in a polyester matrix without using a dispersing agent and a compatilizer, has no agglomeration phenomenon, and can avoid the defects of non-uniform size and distribution, poor dispersion, poor compatibility and the like of inorganic particles. When the composition is applied to the optical reflective film, ...

Intelligence shopping take up equipment

The utility model provides an intelligence shopping take up equipment, include: the push handle handle, the take up main part is located push handle handle below and is connected with the push handle handle, the intelligent display device is installed on the push handle handle, bar -code scanner installs in the take up main part of neighbouring push handle handle one side, but the apron be located the take up main part the top and with take up main part swing joint, the apron is located bar -code scanner's below and is located same horizontal plane with bar -code scanner's bottom surface, the horizontal plane of apron is parallel with bar -code scanner's top. The utility model discloses the installation has the intelligent display device that shows the function on equipment push handle handle, and user the do shopping scanning of self -service merchandise information and shopping guide's function are realized to installation bar -code scanner and the mobile apron of opening and closing ...

Slurry pump quantity determination method and device, electronic equipment and storage medium

The invention provides a mud pump quantity determining method and device, electronic equipment and a storage medium, and the method comprises the steps that physical property parameters of rock debris, performance indexes of mud, drilling parameters and candidate mud pump quantities are obtained; obtaining a drilling mud Reynolds number according to the performance index, the drilling parameter, the candidate mud pump quantity and the first calculation logic; under the condition that the Reynolds number of the drilling mud is smaller than a first preset threshold value, the rock debris settling speed is obtained according to the candidate mud pump quantity, the physical property parameters, the performance indexes, the drilling parameters, the gravitational acceleration and second calculation logic; obtaining the rock debris migration efficiency according to the candidate slurry pump quantity, the drilling parameters, the rock debris sedimentation velocity and the third calculation logic ...

METHOD OF EUTROPHIC WATER BODY RESTORATION BASED ON ECOSYSTEM MODEL AND BIOMANIPULATION TECHNOLOGY

The present invention relates to a method of eutrophic water body restoration based on an ecosystem model and a biomanipulation technology. First, an ECOPATH model is used to fit an energy flow pattern of a current ecosystem; when it is determined that annual production of phytoplankton or macroohytes in a water body is too high, according to output results of the model, on the basis of minimum primary production required for maintaining operation of the system, a method of quantitatively adding fish consumers is adopted for excess primary production, and a predation effect of the fish consumers is used to increase consumption of the primary production in the system; at the same time, a top-down effect is produced to control biomass and community structure of a primary producer. After the restoration is completed, fish catch is evaluated using the ECOPATH model, and the economic fish species added in the current year are harvested according to evaluation results, to maintain energy balance of the ecosystem. 2/2 Performing sample collection of aquatic organisms in a current damaged water body Species Individual Parameters of Trophic predation composition biomass functional groups relationship Inputing data into an ECOPATH model, and performing data fitting, pilot run, checkout, and regrouping Evaluating output results of the model (before restoration) Determininga Evaluating whether Determiningthe main primary productivity exceeds the amount exceeding producer standard the standard Determining the biomass of the added consumer functional groups (herbivorous/filter feeding/omnivorous/carnivorous) Quantitatively adding fish consumers Evaluating output results of the model (after restoration) Determiningfish Comparing system energy Evaluating changes in c flow changes before and ecosystem performance after restoration parameters FIG. 3

SiRNA for reducing NR5A2 gene expression, recombinant vector and application thereof

The invention belongs to the technical field of molecular biology and genetic engineering, and relates to siRNA for reducing NR5A2 gene expression, a recombinant vector and application of the siRNA. In particular to siRNA (small interfering Ribonucleic Acid) which is used for specifically reducing the expression of an NR5A2 (Nuclear Receptor 5A2) gene. The siRNA provided by the invention can be used for specifically reducing the expression of the NR5A2 gene, so that the siRNA can be applied to the preparation of medicines for treating and/or preventing pancreatic cancer.

USER KEYBOARD KEY-PRESSING BEHAVIOR MODE MODELING AND ANALYSIS SYSTEM, AND IDENTITY RECOGNITION METHOD THEREOF

Abstract of the Disclosure The present invention relates to a user keyboard keypress behavior pattern modeling and analysis system, and an identity recognition method thereof. The identity recognition method comprises: performing data analysis according to historical keypress information that a password is input when a user logs in an account within a period of time, establishing a corresponding hidden Markov probability model and performing model calculation to new to-be-tested data to recognize a user identity. The system consists of a user data acquisition module, a data cleaning module, a model training module and a user identity authentication module. The present invention utilizes a user input behavior pattern without needing additional hardware support, key-in time characteristics are simultaneously recorded when the user inputs the username and the password of the user, and the implementation process of the authentication method is more convenient and feasible. By acquiring a user ...

Integrated circuit tray device

An integrated circuit tray device comprises a tray body (1). Wherein the tray body (1) is rectangular, and a plurality of types of integrated circuit storage position arrays are arranged on the tray body (1); positioning devices (4) are arranged on one pair of opposite side edges of the tray body (1), and handles (5) are arranged on the other pair of opposite side edges of the tray body (1). The tray is suitable for meeting the requirements of multi-variety and small-batch production, two or more packaging form integrated circuit storage positions are designed on the tray, and the purposes that when different packaged integrated circuit finished products are tested through a sorter, the initial tray mold opening cost can be reduced, and automatic testing can be effectively completed are achieved.

Application of activity inhibitor in polyolefin catalyst prepolymerization, polyolefin catalyst prepolymerization method and application

The invention relates to the field of olefin polymerization, and discloses application of an activity inhibitor in polyolefin catalyst prepolymerization, a polyolefin catalyst prepolymerization method and application. The invention relates to an application of an active inhibitor as shown in a formula I in prepolymerization of a polyolefin catalyst, wherein R1R2C = CR3-X is shown in the formula I. When the specific active inhibitor is used in polyolefin catalyst prepolymerization, the scaling and blocking risks of a conveying pipeline from prepolymerization catalyst slurry to a main reactor can be reduced, and the operation stability of a device is improved.

Reusable light extraction film for organic electroluminescent device, preparation method and application thereof

The invention discloses a reusable light extraction film for an organic electroluminescent device and a preparation method and application thereof, and belongs to the technical field of photoelectric devices.The method comprises the steps that firstly, single-layer close packing polystyrene (PS) nanometer microspheres are prepared to serve as a template, then copying is conducted twice through a template copying method, and the light extraction film is obtained; and finally, preparing the PDMS light extraction film with a single-layer close-packed PS nano-microsphere structure. The preparation method specifically comprises the following steps: preparing monodisperse PS nano-microsphere dispersion liquid; preparing a single-layer close packing PS nano microsphere structure; preparing a PDMS thin film with a single-layer close-packed PS nano-microsphere reverse structure by a template reetching method; preparing a PDMS light extraction film; when the PDMS light extraction film prepared by ...

Efficient denitration composite oxide catalyst as well as preparation method and application thereof

The invention relates to an efficient denitration composite oxide catalyst as well as a preparation method and an application thereof and belongs to the technical field of environment catalytic materials and environment protection. The composite oxide catalyst is prepared by adopting a hydrothermal method, has a wide activity temperature window and has good water-resisting and sulfur-resisting performances. According to a method for reducing nitric oxide by using the catalyst, the catalyst is loaded in a fixed bed reactor; the reaction temperature is controlled in a range from 150 DEG C to 400 DEG C and ammonia is used as a reducing agent. According to the manganese-cerium-titanium composite oxide catalyst, the purification efficiency of the nitric oxide is 90-97% in a range from 200 DEG C to 400 DEG C when the air speed is 64000 per hour.

Polypropylene composition, preparation method and application thereof, and polyolefin microporous breathable film

The invention relates to the field of polypropylene compositions, and discloses a polypropylene composition and a preparation method and application thereof. The composition comprises the following components in parts by weight: 100 parts of polypropylene, 15-110 parts of a pore-foaming agent and 0.1-2.5 parts of an antioxidant compound additive, the pore-foaming agent is maleic anhydride copolymer microspheres with a cross-linked structure, the cross-linking degree of the copolymer microspheres is greater than or equal to 65%, and the average particle size is 500-2000nm. In the composition, maleic anhydride copolymer microspheres with a cross-linked structure are used as an organic pore-foaming agent, the particle size distribution of the pore-foaming agent is uniform, the pore-foaming agent can be uniformly dispersed in a polypropylene matrix without using a coupling agent and a dispersing agent, and an agglomeration phenomenon does not occur; furthermore, the defects of non-uniform pore ...

Method for preparing polypropylene with high melt strength

The invention provides a method for preparing polypropylene with high melt strength by using a direct polymerization method. By the method, the polypropylene with wide molecular weight distribution and extremely high molecular weight fraction is prepared by controlling the variety and proportion of external electron donor components in a Ziegler-Natta catalyst system according to the different molecular weight fraction requirements in different propylene polymerization stages of cascade operations. The polypropylene has good mechanical property, and especially has high melt strength.

Multiphase copolymerization polypropylene production process

The invention provides a multiphase copolymerization polypropylene production process. The production of a high-performance multiphase copolymerization polypropylene product is realized with two reactors by adopting a method of connecting a liquid phase body reactor and a gas phase reactor in series. Propylene homopolymerization or random copolymerization is performed in the liquid phase body reactor, and the discharge of the liquid phase reactor directly enters the gas phase reactor without any vaporization or flash separation process. Components in the gas phase reactor are continuously analyzed by using on-line analysis means such as gas chromatography (GC) and the like so as to keep the gas phase reaction under constant temperature, pressure and gas phase composition. The circulating gas part of the gas phase reaction is condensed, and the rectified condensate returns to the liquid phase reactor for recycling. The compressed gas phase is conveyed back to the gas phase reactor. Moreover ...

Biological tissue cryoprotective agent and preparation and using method

The invention discloses a biological tissue cryoprotective agent and a preparation and using method. After fresh biological tissue leaves a living body or original living environment, an endogenous enzyme of the living body begins to degrade genetic materials, and the degradation speed is directly determined by the content of the endogenous enzyme and temperature. The biological tissue cryoprotective agent comprises, by weight, 300 parts to 400 parts of (NH4)2SO4, 2 parts to 3 parts of NaCl, 18 parts to 25 parts of NaSO4, 0.2 part to 0.3 part of NaNO3, 0.1 part to 0.2 part of KBrO3 and 1000 parts of ultrapure water. The biological tissue cryoprotective agent is used for cryopreservation of fresh biological specimens.

Targeting fusion peptide for inhibiting CPB1 nuclear transport and application

The invention belongs to the field of biological medicine, and relates to a targeting fusion peptide for inhibiting CPB1 nuclear transport and application. The fusion peptide comprises an N-terminal cell-penetrating peptide and a C-segment leading peptide, and the amino acid sequence of the fusion peptide is shown as SEQ ID NO: 1. According to a biological center rule, a transcription factor CPB1 nuclear localization signal key sequence is researched, a leading peptide for targeted inhibition of CPB1 nuclear transport is designed and synthesized according to the key sequence, the fusion peptide is further prepared, and experiments prove that the fusion peptide can significantly inhibit the growth of pancreatic cancer cells.

Method for producing high-performance polypropylene pipe material

The invention relates to a method for producing a high-performance polypropylene pipe material. In the method, an ordinary commercial Z-N polymerization catalyst and direct polymerization are adopted, and a wide molecular weight distribution polypropylene composition characterized in that the isotacticity degree of a macromolecule part of the polypropylene is lower and the isotacticity degree of a micromolecule part of the polypropylene is extremely high is obtained through regulating the polymerization steric regularity and the hydrogen regulation sensibility of the catalyst in different reactors so as to realize the comprehensive improvement of the rigidity and the toughness of the material. The material does not need post processing modification, and any copolymerization monomer is not needed in a copolymerization process.

Method for synthesizing SiC powder by utilizing gold mine tailings

The invention belongs to the technical field of comprehensive utilization of ceramics, refractory materials and mineral waste, and provides a method for synthesizing SiC powder by utilizing gold mine tailings, which has simple process, easy control and low raw material cost. The invention takes gold mine tailings as a main raw material, adds appropriate amount of quartz sand, and takes carbon powder as a reducing agent so as to obtain a uniform green body by mechanical pressing. In the preparation process, by controlling the charge ratio, sintering temperature, heating system, holding time and other process parameters, SiC-based mixed powder can be obtained. The invention has simple preparation, and no need for complex technological equipment and process, and simultaneously takes a large amount of waste tailings as a raw material, thereby turning waste into wealth so as to relieve the pressure of waste tailings on the environment. The SiC-based mixed powder can be obtained. The SiC powder ...

Preparation method of high-melt fluidity high-rigidity antishock polypropylene

The invention discloses a method of high-melt fluidity high-rigidity antishock polypropylene. The method is characterized by comprising the following steps: 1) under the effect of hydrogen and a Ziegler-Natta catalyst of a trialkoxyl silicane-containing compounds external electron donor, propylene or propylene and alpha-alkene are polymerized to obtain a polymer A; 2) a dialkoxysilanes compound external electron donor is added for premixing with the polymer A; 3)under the premixed material in the step 2) and hydrogen, propylene and alpha-alkene are polymerized to obtain a polymer B with melt mass flux rate of 0.01-30g/min; the antishock polypropylene comprising the polymer A and the polymer B can be finally obtained, the melt mass flux rate is 20-1000g/10min, and preferably is 20-100g/10min. The provided method has the advantages of easy operation, convenient operation and easy industrial production, so that high performance polypropylene with high melt mass flux rate, high rigidity and ...

Buried pipe, heat exchange system and using method of buried pipe

The invention relates to the technical field of renewable energy sources, in particular to a buried pipe, a heat exchange system and a using method of the buried pipe. A buried pipe comprises a water inlet pipe provided with a water inlet; the water outlet pipe and the water inlet pipe are arranged at an interval, and the water outlet pipe is provided with a water outlet; the horizontal pipe structure comprises a shallow-layer horizontal pipe and a deep-layer horizontal pipe, and the shallow-layer horizontal pipe and the deep-layer horizontal pipe are communicated with the water inlet pipe and the water outlet pipe respectively; the first opening and closing structure is arranged in the water inlet pipe, and the height of the first opening and closing structure is lower than that of the shallow horizontal pipe; and the second opening and closing structure is arranged in the shallow horizontal pipe. According to the buried pipe, the heat exchange system and the using method of the buried ...

Agricultural tomato seedling raising and sowing device

The invention discloses an agricultural tomato seedling seeding device, which comprises an upper support plate, a lower support plate and a plurality of seeding units, each seeding unit comprises a fixed rod, the lower end of the fixed rod is provided with a fixed bevel gear, the fixed rod is sleeved with a rotating shaft, the rotating shaft is sleeved with a digging cylinder, and the digging cylinder is rotatably arranged on the lower support plate. A spiral groove is formed in the outer side wall of the digging barrel, a transmission bevel gear is arranged on the outer wall of the rotating shaft, a transmission column is eccentrically arranged on the outer end face of the transmission bevel gear, and an annular guide rail is formed on the inner side wall of the digging barrel; a rotating gear is arranged on the rotating shaft, stand columns are arranged on the portions, located on the two sides of the rotating gear, of the lower supporting plate, transmission gears are arranged at the ...

Use of isochlorogenic acid compound and different combinations in hepatitis treatment

The invention relates to the application of a compound to treating hepatitis and aims at providing an isochlorogenic acid compound which has stronger effects of anti-HBV, anti-inflammation and liver protection, and has wide and rich sources, and simple and convenient extraction process. The technical proposal is as follows: the isochlorogenic acid compound is made from one or more than one of isochlorogenic acid A, isochlorogenic acid B and isochlorogenic acid C according to any mixture ratio; in addition, the technical proposal further comprises the application of the compound to preparing drugs for resisting hepatitis B virus, and resisting inflammation and protecting liver.

Ultra-soft polypropylene composition as well as preparation method and application thereof

The invention belongs to the technical field of polypropylene production, and relates to an ultra-soft polypropylene composition as well as a preparation method and application thereof. The present invention relates to a polypropylene composition comprising: (A) 10 to 50 wt% of one or more propylene copolymers comprising 0.5 to 10 wt% of ethylene and/or a C4-C8 alpha-olefin having a melt flow rate of < = 20 g/10 min at 230 DEG C under a load of 2.16 kg; (B) 50-90 wt% of one or more propylene copolymers comprising 25-45 wt% of ethylene and/or C4-C8 alpha-olefin, the content of xylene soluble substances at room temperature being not less than 85 wt%, and the melt flow rate at 230 DEG C under a load of 2.16 kg being less than or equal to 20 g/10 min; the bending modulus of the polypropylene composition is less than or equal to 200MPa. The polypropylene composition has the ultra-soft characteristic, the bending modulus is lower than 200 MPa, and the polypropylene composition is particularly ...

Compound serving as PRMT1 inhibitor and application thereof

The invention belongs to the field of medical chemistry, relates to a compound serving as a PRMT1 inhibitor and application of the compound, and particularly provides a compound as shown in a formula (I), a formula (II) and a formula (III) or pharmaceutically acceptable salt, isomer, solvate, crystal or prodrug of the compound. Processes for their preparation as well as pharmaceutical compositions containing these compounds and the use of these compounds or compositions for the treatment of diseases ameliorated by inhibition of PRMT1, such as cancer.

Gas-driven air supply adjustable defrosting uninterrupted heating air source heat pump unit

The invention relates to an air source heat pump unit, in particular to a gas-driven air supply adjustable defrosting uninterrupted heating air source heat pump unit. The quasi-secondary compressor is connected with a main path and an auxiliary path after passing through an indoor heat exchanger, the auxiliary path is connected with the quasi-secondary compressor for air supply through a first electronic expansion valve and a high-temperature cooling liquid heat exchanger, the main path is divided into three parallel branches, and the first branch is connected with a low-temperature cooling liquid heat exchanger through a second electronic expansion valve; the second branch is connected with the flue gas heat exchanger through a third electronic expansion valve, the third branch can control forward and reverse circulation of a fourth electronic expansion valve and an outdoor heat exchanger by switching a four-way reversing valve, and the third branch is connected with a quasi-secondary ...

Key management system, method and device

The invention provides a key management system, method and device, and the system comprises a key center, a backup center, a data channel, and a quantum key channel. The key center is connected with the backup center through a quantum key channel, the same quantum key is generated at the same time in the key center and the backup center through the quantum key channel, the key center is used for managing the quantum key, and the backup center is used for backing up the quantum key; and the key center is connected with the backup center through the data channel, and is used for acquiring the to-be-recovered key from the backup center through the data channel under the condition that the to-be-recovered key exists in the key center. According to the method and the device, the problems of complex and low-efficiency key backup and recovery modes and key leakage risk in the related technology are solved.

Data center temperature control and waste heat recovery system

The invention relates to the technical field of data center management and control, in particular to a data center temperature control and waste heat recovery system. The invention provides a data center temperature control and waste heat recovery system which comprises a data center, a building group, an energy supply system and a temperature control system. The temperature control system is connected with the building group and the data center at the same time, is suitable for cooling the data center and heating the building group, and comprises a heat storage part which is connected with the building group and the data center at the same time and is suitable for absorbing and storing heat energy generated by the data center. Heat energy generated by the data center can be used for supplying heat to the building group; and the energy supply system is connected with the temperature control system and is suitable for providing energy for the temperature control system. According to the ...

Preparation method of furnace bottom roller graphite carbon sleeve impregnating solution

Olefin polymerization apparatus and applications thereof in transferring polymer and recycling monomer

The invention provides an olefin polymerization apparatus and applications thereof in transferring polymer and recycling monomer. The invention provides an olefin polymerization apparatus, which comprises: a first reactor, a first separator, a transferring device, a second reactor and a second separator. The olefin polymerization apparatus also comprises: a compressor, a rectifying tower, a monomer polymerization reactor, a prepolymerization reactor and pre-complexing reactor. The invention also provides applications of the apparatus in transferring polymer and recycling monomer. The invention controls transferring of the mixed reaction gases from upstream reactor to downstream reactor to a great extent, and the cross contamination of mixed gases in the two reactors do not exist. Inert gases or other purifying gases are not needed to be introduced into the transferring process of the polymer, and only two simple apparatuses are needed in the whole transferring process, which is convenient ...

Integrated reinforced concrete wall construction assembled from two or more layers of reinforced concrete walls

This invention involves one kind two or two above steel bar congeals the dirt wall group to synthesize a body the combination steel bar coagulation dirt wall structure, it is uses in in the civil air defense project protecting wall, anti-detonation wall, bunker wall; In civil project bulkhead. This invention has two or two above steel bar coagulation dirt wall and is located between two steel bars coagulation dirt wall the transition connection level composition, the transition connection level is composed by transverse steel coagulation dark Liang eitherlei and the vertical reinforced concrete dark column or the rib overlapping distribution, and the space which forms in their overlapping distribution builds the column to have the cutting and slicing or to stick the soil type artificial brick. States the cutting and slicing or is called the slag brick artificial brick for the air entrainment Tong cutting and slicing either the sand-lime brick artificial brick. This invention beneficial ...

Rock core measurement method and device based on bidirectional cascade pixel difference network

The invention relates to the technical field of rock core measurement, and discloses a rock core measurement method and device based on a bidirectional cascade pixel difference network, and the method comprises the steps: obtaining a plurality of rock core images, training an edge detection model based on the plurality of rock core images, and generating a bidirectional cascade pixel difference network model; obtaining a core box main body image, and inputting the core box main body image into the bidirectional cascade pixel difference network model to generate an initial edge prediction map; processing the initial edge prediction map to generate a core rectangular frame; and performing core measurement on the core box main body image based on the core rectangular frame to generate core features. According to the invention, the accuracy of the core measurement result is improved, and subsequent exploration geological analysis work is facilitated.

Cloud platform basic framework supervision system

The invention discloses a cloud platform basic framework supervision system comprising a node and group management system which is used for establishing and maintaining a list of nodes and groups; an operation system deployment system which is used for installation of operation systems for the additionally arranged nodes and groups in the list; a node and group information monitoring system which is used for monitoring software and hardware configuration information and operation state of the nodes and the groups in the list in real time; and a server alarm system which is used for configuration and execution of monitoring strategies and alarm strategies on the nodes and groups with deployment of the operation systems. According to the cloud platform basic framework supervision system, work personnel are relieved from an original artificial deployment system so that the systems can be rapidly deployed in a remote way after installation of new machines, the process is completed without artificial ...

Animal experiment substitution method for toxicological evaluation of exogenous compounds

The invention relates to a cell separation culture method of biological tissues and use thereof, in particular to a method for separating and culturing hepatic cells of a newborn rat (or mouse) and using the hepatic cells as a substitutional animal experiment model for toxicological evaluation of exogenous compounds. The method for separating and culturing the hepatic cells of the newborn rat (or mouse) of the invention has simple operation, does not need a liver perfusion process and expensive instruments, equipment and reagents, and can obtain more than 90% of liver parenchyma cells which have good uniformity and stability and high sensitivity and are easy for manual control. The hepatic cells separated and cultured by the invention are very sensitive to the toxicity of the exogenous compounds, have some functions and activity of in vivo hepatic cells, especially reserve the activity of drug metabolic enzyme, can well simulate the physiological environment of the in vivo liver, have the ...

Polypropylene composition, preparation method thereof and product prepared from polypropylene composition

A polypropylene composition, a method of making the same, and a product made therefrom, the polypropylene composition comprising: (a) 70-95 wt% of crystalline homo-polypropylene having an isotactic five-component fraction of 96% or more and forming a continuous matrix phase in the polypropylene composition; (b) 5-30% by weight of an ethylene-propylene elastomeric copolymer containing 20-35% by weight of ethylene structural units and 65-80% by weight of propylene structural units and forming a dispersed rubber phase in the continuous matrix phase, the rubber phase being at least partially deformable under the action of an orientation force and forming an oriented structure; wherein the ratio of melt mass flow rates of the crystalline homo-polypropylene and the polypropylene composition measured at 230 DEG C under a load of 2.16 kg is 0.5 to 2.0. The polypropylene composition and the product have high gloss and good mechanical properties, and the preparation method is simple, low in cost ...

Polyethylene composition, preparation method and application thereof, and polyolefin microporous breathable film

The invention relates to the field of polyolefin compositions, and discloses a polyolefin composition as well as a preparation method and application thereof. The composition comprises the following components in parts by weight: 100 parts of polyethylene, 20-110 parts of a pore-foaming agent and 0.1-2.5 parts of an antioxidant compound additive, the pore-foaming agent is maleic anhydride copolymer microspheres with a cross-linked structure, the cross-linking degree of the copolymer microspheres is greater than or equal to 65%, and the average particle size is 500-2000nm. The composition contains maleic anhydride copolymer microspheres with a cross-linked structure as an organic pore-foaming agent, the particle size distribution of the pore-foaming agent is uniform, and the pore-foaming agent has good dispersibility in a polyethylene matrix without using a coupling agent and a dispersing agent, does not generate an agglomeration phenomenon, and has good pore-foaming performance. The defects ...

Concentric variable-diameter prosthesis for proximal humerus lesion with irreparable sentry muscle lesion

A concentric variable-diameter prosthesis for proximal humerus lesion with irreparable sentry muscle injury comprises a humerus head prosthesis, and a bulb of the humerus head prosthesis is similar to a bulb of a physiological humerus head; the diameter of the sphere of the humerus head prosthesis is larger than that of the physiological humerus head of the patient; tensioning of triceps brachii muscles under the natural drooping state of the arm is achieved in the mode that only the diameter of the humerus head prosthesis is increased, or in the mode that the diameter of the humerus head prosthesis is increased and the distance between the humerus head prosthesis and the humerus handle is increased in a combined mode. In the using state, the sphere center position of the humerus head prosthesis is not lower than the lower edge of the physiological glenoid cavity. An extension structure used for protecting and guiding the greater tuberosity of the humerus to enter the rotation area is further ...

Side sunshade for snowmobile sleigh racing track and snowmobile sleigh building system

The invention relates to a side sunshade for a snowmobile and sleigh racing track and a snowmobile and sleigh building system.The side sunshade for the snowmobile and sleigh racing track comprises a sunshade body arranged above the snowmobile and sleigh racing track and used for shielding the snowmobile and sleigh racing track; the sunshade body is erected on the sunshade fixing frame, and the sunshade fixing frame is connected with the other snowmobile sleigh racing track above the shaded snowmobile sleigh racing track; the sunshade fixing frame is fixed to the side portion of the snowmobile sleigh racing track. The side sunshade is fixedly mounted on the side of the sleigh racing track, so that an existing sunshade body mounted at the top of the sleigh racing track is replaced, and the problem that the sunshade for the snowmobile sleigh racing track cannot be erected between two snowmobile sleigh racing tracks at the special landform or the large-angle turning position of the snowmobile ...

Special well sand washing and filling multifunctional well completion pipe string and construction method

The invention relates to a multifunctional well completion pipe string for sand washing and filling of a special well. The multifunctional well completion pipe string comprises a well completion outer pipe string and a well completion inner pipe string, the well completion outer pipe column comprises a push cylinder, an outer center pipe, a lower cone, a screen pipe, an upper connecting cylinder, a lower connecting cylinder and a guide head. The push cylinder sleeves the outer wall of the outer central tube, two ends of the lower cone are fixedly connected with the outer central tube and the screen tube respectively, the other end of the screen tube is fixedly connected with the upper connecting cylinder, the upper connecting cylinder is connected with the lower connecting cylinder through a closing structure, and a one-way valve structure is mounted between the lower connecting cylinder and the guide head; a packing anchoring structure is mounted on the outer central pipe between the push ...

Polypropylene composition, preparation method and application thereof, and polyolefin microporous breathable film

The invention relates to the field of polyolefin compositions, and discloses a polyolefin composition as well as a preparation method and application thereof. The composition comprises polypropylene, a pore-foaming agent and an antioxidant composite additive, on the basis of 100 parts by weight of polypropylene, the use amount of the pore-foaming agent is 50-120 parts by weight, and the use amount of the antioxidant composite additive is 0.1-2 parts by weight; the pore-foaming agent is maleic anhydride copolymer microspheres, and the average particle size of the copolymer microspheres is 500-1600 nm. The composition takes maleic anhydride copolymer microspheres as an organic pore-foaming agent, the particle size of the copolymer microspheres is uniformly distributed, the copolymer microspheres can be uniformly dispersed in polypropylene without using a coupling agent and a dispersing agent, and the agglomeration phenomenon is avoided; furthermore, the defects of non-uniform pore size distribution ...

Anti-aging high-rigidity high-impact polypropylene resin composition and preparation method thereof

The invention belongs to the field of plastics, and relates to an anti-aging high-rigidity high-impact polypropylene resin composition and a preparation method thereof. The anti-aging, high-rigidity and high-impact polypropylene resin composition is prepared from the following components in parts by weight: 100 parts of polypropylene resin, 0.01 to 0.2 part of nucleating agent, 0.001 to 0.5 part of hydrotalcite, 0.05 to 1 part of antioxidant, 0.05 to 1 part of antistatic agent and 0.08 to 1 part of light stabilizer. After the polypropylene resin composition is aged, the surface color is not changed, the mechanical properties of high rigidity and high impact resistance are still kept, the operation process is simple and reliable, the input cost is low, and the polypropylene resin composition is suitable for plastic products such as household appliances, trays and toys.

Fabricated double-plate shear wall, fabricated house and construction method of fabricated house

The invention relates to the technical field of building construction, in particular to an assembly type double-plate shear wall, an assembly type house and a construction method of the assembly type house. The assembly type double-plate shear wall comprises a prefabricated assembly component, a shear wall body and a shear wall body, and the prefabricated assembly component is of a plate-shaped structure; the two oppositely-arranged prefabricated assembly components of the same shape are spliced to form the assembly type double-plate shear wall with a cavity. And the compression-resistant connecting pieces penetrate through the surfaces of the two prefabricated assembly components which are oppositely arranged, and the compression-resistant connecting pieces are fixedly connected with the two prefabricated assembly components which form the assembly type double-plate shear wall correspondingly. By means of the compression-resistant connecting piece, the problem that in the prior art, the ...

Concentrated display and transmission device for brewing white spirit

The invention discloses a concentrated display and transmission device for brewing white spirit. The concentrated display and transmission device comprises a microprocessor system, a JTAG (Joint Test Action Group) circuit, a power supply circuit, a ZIGBEE circuit, a 470M wireless module, a resetting circuit and a single chip microcomputer, wherein the microprocessor system is respectively connected with the JTAG circuit, the power supply circuit, the ZIGBEE circuit, the 470M wireless module and the resetting circuit; the microprocessor system is provided with an RS485 interface and is used for connecting a display screen; the display screen is mainly used for carrying out real-time monitoring on the fermentation temperature of a fermentation pit and communication control on an industrial bus Modbus. The concentrated display and transmission device can be used for monitoring the environment information including the temperature, the humidity and the like of the fermentation pit in a long ...

Goods delivery manipulator

The utility model provides a goods delivery manipulator, including host system, display screen, input keyboard, label identification module, card reader, receipt printer and camera, host system include data processing module and with data processing module signal connection's storage module, data input module, data output module and the network module, and the host system passes through the network module and is connected with goods delivery service ware, display screen and receipt printer pass through data output module and data processing module signal connection, input keyboard, label identification module, card reader and camera pass through data input module and data processing module signal connection, the utility model discloses a goods delivery manipulator collected explanations or commentaries sign indicating number, punching the card, taking picture in an organic whole, both realized having actd as the POS machine again to the decoding of encrypted goods delivery information, ...

Manual and automatic undisturbed switching system and method for double valves of deaerator

The invention provides a manual-automatic undisturbed switching system and method for double valves of a deaerator, and the system comprises a small valve manual operation station which is used for carrying out the manual-automatic switching of a small valve through a mode switching module, controlling the valve position of the small valve according to a mode operation rule, and outputting a first parameter value; the large valve manual operation station is used for carrying out manual and automatic switching of the large valve through a mode switching module, controlling the valve position of the large valve according to a mode operation rule and outputting a second parameter value; and the main valve manual operation station is used for selecting a preset tracking function through a function selection module according to the first parameter value and the second parameter value, performing function tracking through a PID module, and adjusting a valve position control instruction according ...

Method and system for deeply removing volatile matters from synthetic resin

The invention belongs to the technical field of synthetic resin, and discloses a method and a system for deeply removing volatile matters from synthetic resin, and the method comprises the following steps: resin particles enter from the top of a ridge-type devolatilization tower and sequentially pass through a first-stage heating section, a second-stage heating section and a cooling section of the ridge-type devolatilization tower from top to bottom; falling to the bottom of the ridge-type devolatilization tower and discharging; a first mixed gas composed of nitrogen and water vapor penetrates through the cooling section to be in direct contact with the resin particles for heat exchange, and then a second mixed gas is obtained through pressurization, heating and primary steam supplementation; after the second mixed gas passes through the second-stage heating section and is in direct contact with resin particles for heat exchange, third mixed gas is obtained through pressurization, heating ...

PROPYLENE HOMOPOLYMER HAVING HIGH MELT STRENGTH AND PREPARATION METHOD THEREOF

Method for recovering multi-component organic gas mixture

The invention relates to a method for recovering a multi-component organic gas mixture, and is mainly used for solving the problem in the prior art that volatile gases such as benzene, toluene, dimethylbenzene and gasoline produced in the large and small breathing of truck loading, shipping, storage tanks and the like of a chemical plant cannot be simultaneously recovered. The method for recovering the multi-component organic gas mixture comprises the following steps of (a) causing organic gases to sequentially enter a condensate tank (2) and a refrigerating unit, causing condensed liquid to enter an oil-water separator (5), and causing organic substances of the oil-water separator (5) to enter a storage tank (6); (b) adsorbing the gases in an adsorption tank (9); (c) after the adsorption tank (9) is saturated, switching to an adsorption tank (10), and starting the desorption of the adsorption tank (9); (d) returning substances desorbed from the adsorption tank (9) to the refrigerating ...

Water surface image characteristic-based image deformation device and method thereof

The invention relates to a water surface image characteristic-based image deformation device, which comprises an initial module, a drawing module, an acquisition module, an adjusting module, a deformation module, a display module, and a judging module, wherein the initial module builds an initial simulation plane mirror; the drawing module carries out drawing and deformation on the plane mirror and a curved mirror is thus formed; the acquisition module acquires an input module; the adjusting module adjusts parameters of the input image and a position of an observation point; the deformation module carries out deformation on the input image via the curved mirror according to the mirror imaging rule to obtain a deformation image which is parallel projection of a curved image displayed in the curved mirror in an X0Y plane; the display module adjusts the size of the deformation image and displays the image; the judging module judges whether the deformation image to be the result needed by the ...

Data isolation method and device, electronic equipment and storage medium

The invention provides a data isolation method and device, electronic equipment and a storage medium. The method comprises the steps that user login information is acquired; calling a corresponding data display page according to the user login information; generating a target database statement fragment according to an isolation condition corresponding to a data list in the data display page; splicing the target database statement fragment to a basic database statement of a data list to obtain a target database statement; and calling target data based on the target database statement, and displaying the target data in a data list. According to the method provided by the scheme, the data list is bound with the isolation condition, and the data in the database is bound with the corresponding data list inevitably, so that the data can be isolated, and the security of the data is improved.

Forming method of supporting system of skiing track

The invention relates to a forming method of a supporting system of a skiing track, belongs to the technical field of skiing tracks, and solves the problem of poor anti-seismic property of a track in the prior art. The method comprises the steps that S1, according to the shape of a racing track, the number and positions of racing track shear walls and racing track supporting columns are arranged; s2, base concrete of the racing track is poured; meanwhile, a track shear wall and a center supporting column of a track supporting column are arranged in the base concrete; s3, a track shear wall and a track supporting column are poured; and S4, racing track concrete is poured above the racing track shear walls and the racing track supporting columns. Rapid pouring forming of the ski track supporting system is achieved, elastic supporting of the track body is achieved, and meanwhile the anti-seismic performance of the whole track is improved.

Synthetic method of tissue adhesive composite hydrogel and application of green sequence of tissue adhesive composite hydrogel in treatment of peri-implantitis

The invention discloses a synthetic method of a tissue adhesion composite hydrogel and application of a green sequence of the tissue adhesion composite hydrogel in treatment of peri-implantitis. The preparation method comprises the following steps: firstly, synthesizing cCP hydrogel by using catechol modified chitosan and beta-GP, establishing ideal implant surrounding neck sealing by mutually adhering the cCP hydrogel to the surface of a titanium implant and surrounding soft tissues, and blocking microorganism invasion, and further, in order to improve the synergistic antibacterial and osteogenic activity of Ag and Sr, doping Ag on the surface of SrMBGN in situ, so that the antibacterial and osteogenic activity of the titanium implant is improved. Ag-pSrMBGN particles are synthesized, and the particles and gingival mesenchymal stem cells (GMSCs) are doped into a tissue adhesion hydrogel matrix cCP, so that the temperature-sensitive injectable tissue adhesion composite hydrogel is obtained ...

Test section pipeline structure, heat exchange performance test system and test method

The invention relates to the technical field of heat exchange performance test equipment, and aims to provide a test section pipeline structure, a heat exchange performance test system and a test method. According to the test section pipeline structure, fluid working medium heat exchange coefficients under multiple working conditions can be obtained through single test, and the test efficiency is high. The test section pipeline structure comprises a fluid working medium pipeline and a heat exchange pipeline; the fluid working medium pipeline is provided with a plurality of first test points at intervals along the extension direction; the heat exchange pipeline is wound on the fluid working medium pipeline, and second test points are arranged at the positions, corresponding to the first test pieces, of the heat exchange pipeline. The problems that in the prior art, when a testing system obtains the heat exchange coefficient of the fluid working medium under multiple working conditions, multiple ...

Method for controlling vacuum pumps in active carbon adsorption oil and gas recovery process

The invention relates to a method for controlling vacuum pumps in the active carbon adsorption oil and gas recovery process. The method mainly solves the problem that two frequency converters are generally adopted for controlling two vacuum pumps in the prior art. By the adoption of the method for controlling the vacuum pumps in the active carbon adsorption oil and gas recovery process, speed regulation and operation of the two vacuum pumps are controlled by one frequency converter in large handling capacity oil and gas recovery, four alternating current contactors are configured in an auxiliary mode, the technical scheme that the frequency and motion of the frequency converter and the four alternating current contactors are adjusted by control programs of a programmable logic controller, so that the two vacuum pumps are respectively controlled to be operated at the low frequency stage or at the power frequency stage is adopted, the problem is well solved, and the method can be applied ...

Application of activity inhibitor in polyolefin catalyst prepolymerization, polyolefin catalyst prepolymerization method and application

The invention relates to the field of olefin polymerization, and discloses application of an activity inhibitor in polyolefin catalyst prepolymerization, a polyolefin catalyst prepolymerization method and application. The activity inhibitor is a compound with a structure shown in a formula I or an oligomer with a structure shown in a formula II, and R-(OH) n is shown in the formula I; wherein R is H or a C1-C30 group, and n is an integer from 1 to 3; p-(OH) m is shown in the formula II; wherein the molecular weight of the oligomer is less than 5000, and m is an integer from 1 to 15. When the specific active inhibitor is used in polyolefin catalyst prepolymerization, the scaling and blocking risks of a conveying pipeline from prepolymerization catalyst slurry to a main reactor can be reduced, and the operation stability of a device is improved.

Pumped storage unit variable working condition degradation trend prediction method and device

The invention discloses a pumped storage unit variable working condition degradation trend prediction method and device. The method comprises the steps that after historical stable operation monitoring data of a unit is cleaned, a health data set is constructed; analyzing the vibration influence of the operation condition parameters on the key parts and the correlation between different vibration monitoring characteristic quantities to screen the health data set, obtaining a health training set to train a preset first machine learning model, and obtaining a unit standard health model; inputting the real-time monitoring operation condition parameters into a standard health model to obtain standard values of corresponding multi-source vibration monitoring characteristic quantities, determining weights of the vibration monitoring quantities through an entropy weight method, and determining deterioration degree indexes of the standard values of the multi-source vibration monitoring quantities ...

Rhizopus stolonifer plasmid vector

The invention belongs to the field of plasmid vector construction, and provides a plasmid vector as well as a construction method and application thereof. The plasmid vector is constructed by modifying pAN7-1, a rhizopus stolonifer promoter gene and a resistance gene are inserted into multiple cloning sites of the pAN7-1 of the plasmid vector, and the resistance gene is located at the downstream of the rhizopus stolonifer promoter gene. The selected section of the rhizopus stolonifer promoter gene can efficiently start the gene connected behind, so that the transformation efficiency of the plasmid vector is greatly improved. The invention establishes a method for efficiently transforming the rhizopus stolonifer by using the agrobacterium tumefaciens-mediated exogenous gene, and can provide help in the aspects of genetic modification of the rhizopus stolonifer, development of useful genes, separation of drug target genes and the like.

Compound as AR inhibitor and application thereof

The invention belongs to the field of medical chemistry, relates to a compound serving as an AR inhibitor and application of the compound, and particularly provides a compound shown in a formula (I) or an isomer, pharmaceutically acceptable salt, solvate, crystal or prodrug of the compound. Processes for their preparation as well as pharmaceutical compositions containing these compounds and the use of these compounds or compositions for the treatment of AR-mediated diseases.

Horizontal well infinite stage segmentation gravel packing well completion pipe string and construction process method

The invention relates to a horizontal well infinite stage segmentation gravel packing well completion pipe string which comprises an outer well completion tool and an inner well completion tool. The outer well completion tool comprises a plurality of stages of outer filling modules which are fixedly connected in sequence, each outer filling module comprises a packing device, a screen pipe and a filling device, the two ends of each screen pipe are fixedly connected with the corresponding packing device and the corresponding outer filling device respectively, and the other end of each outer filling device is fixedly connected with the packing device of the next stage; the outer filling device comprises an outer filling cylinder and a hole sealing structure, a plurality of outer filling holes are formed in the outer filling cylinder, and in a non-working state, the hole sealing structure can block the outer filling holes; the inner well completion tool comprises an inner filling device and ...

Method and device for constructing chromaticity angle correction model of optical sensor

The invention discloses an optical sensor chromaticity angle correction model construction method and device, and the method comprises the steps: respectively calculating a first chromaticity angle data set of a first optical sensor and a second chromaticity angle data set of a second optical sensor based on spectral data sets collected by the first optical sensor and the second optical sensor; calculating a chromaticity angle difference data set between the first optical sensor and the second optical sensor according to the first chromaticity angle data set and the second chromaticity angle data set, and training by using the chromaticity angle difference data set and the second chromaticity angle data set to obtain a chromaticity angle correction model of the second optical sensor, therefore, the chromaticity angle corresponding to the data acquired by the second optical sensor can be corrected by using the chromaticity angle correction model of the second optical sensor, the correction ...

System of providing and delivering is in grades encrypted to goods

The utility model provides a system of providing and delivering is in grades encrypted to goods, including customer end, server, operation end, delivery label printer and the ware of providing and delivering in grades, the customer end pass through the network with server signal connection, the server include data processing module and with the data processing module signal connection's storage module, data processing module and customer end signal connection, storage module with operation end signal connection, operation end with delivery label printer signal connection, the ware of providing and delivering in grades has a plurality ofly, respectively by the network with server signal connection. System of providing and delivering is in grades encrypted to goods can the difference deliver the place on through discernment goods delivery label goods delivery information and to the reading of the specific field of goods delivery information, and then print the specific delivery label of next ...

Racing track supporting column

The invention relates to a racing track supporting column, belongs to the technical field of skiing racing tracks, and solves the problem that the stability of a racing track becomes poor due to the fact that the performance of a rubber pad of a racing track stand column is reduced due to temperature influence in the prior art. The device comprises a concrete stand column, a center supporting column and an elastic cushion. The concrete stand column is arranged outside the center supporting column. The concrete stand columns are supported between the racing track concrete and the base concrete. The elastic cushion is arranged between the concrete stand column and the racing track concrete; the elastic cushion is of a multi-piece assembled structure; and a protective cover and a temperature control lamp are arranged outside the elastic cushion. Effective damping of the racing track support is achieved, the influence of the external environment on the performance can be reduced, and the elastic ...

9-substituted-2-amino-6-guanidyl purine compounds as well as preparation method and application thereof

The invention discloses 9-substituted-2-amino-6-quanidyl purine compounds as well as a preparation method and application thereof. Through in vitro activity detection tests, 26 relevant compounds react with human acrosin with fertility activity, and the residual enzyme activity is detected by an improved Kennedy method. The 26 relevant compounds are compared with a classic acrosin inhibitor TLCK. Results show that all the tested compounds have inhibition activity on the human acrosin and have stronger inhibition activity than that of the positive control product TLCK. Researches verify that the compounds have strong antifertility activity and can be used for preparing antifertility drugs. New male contraceptive drugs are provided in clinic, and the compounds have greater application value. The invention provides the preparation method.

9-substituted-2-amino-6-guanidyl purine compounds as well as preparation method and application thereof

The invention discloses 9-substituted-2-amino-6-quanidyl purine compounds as well as a preparation method and application thereof. Through in vitro activity detection tests, 26 relevant compounds react with human acrosin with fertility activity, and the residual enzyme activity is detected by an improved Kennedy method. The 26 relevant compounds are compared with a classic acrosin inhibitor TLCK.Results show that all the tested compounds have inhibition activity on the human acrosin and have stronger inhibition activity than that of the positive control product TLCK. Researches verify that the compounds have strong antifertility activity and can be used for preparing antifertility drugs. New male contraceptive drugs are provided in clinic, and the compounds have greater application value. The invention provides the preparation method.

Rhizosphere sampling device for researching continuous cropping soil disease mechanism

The utility model discloses a rhizosphere sampling device for continuous cropping soil disease mechanism research, and relates to the technical field of rhizosphere soil sampling, a mounting opening is formed in one side of a box body, a rhizosphere observation plate is detachably mounted on the mounting opening, and a root chamber partition plate is arranged in the box body and divides the box body into a first root chamber and a second root chamber; a mounting groove for mounting the root partition plate is formed in the upper part of the root chamber partition plate; a plurality of first grooves are formed in the upper surface of the mounting groove; a plurality of second grooves are formed in the lower surface of the root separating plate, a root guiding hole is formed by the corresponding first groove and second groove, each root guiding plate is detachably installed below one first groove, the root guiding plates are installed on the side, close to the rhizosphere observing plate, ...

Method for controlling production of broad-distribution polyolefin

The invention provides a method for controlling the production of broad-distribution polyolefin. The method is applied to two or more reactors connected in series, and a broad-molecular and broad-distribution polymer is produced by adding different quantities of hydrogen to different reactors. The method is characterized in that in a polymerization process, the feeding quantities of reaction monomers or solvents in the reactors are controlled through keeping the heat release quantities of the reactors unchanged, and the heat release quantities are obtained through calculating the heat removalquantity of a cooling exchange unit related to polymerization heat removal. The method realizes the stability of occupied proportion of different molecular scales in the broad-distribution polyolefinand can be used for obtaining a broad-distribution polyolefin product with stable molecular weight distribution.

Novel PARP1 inhibitor and application thereof

The invention belongs to the field of medical chemistry, relates to a compound for selectively inhibiting PARP1 or a pharmaceutically acceptable salt, an isomer, a solvate, a crystal or a prodrug thereof, a compound and application thereof, and particularly provides a compound as shown in a formula (I) or an isomer, a pharmaceutically acceptable salt, a solvate, a crystal or a prodrug thereof, as well as pharmaceutical compositions containing the same and the use of these compounds or compositions for the treatment and/or prevention of diseases beneficial to inhibition of PARP1, such as cancer.

Engineering material receiving accounting management system used in first supply engineering mode

The invention discloses an engineering material receiving accounting management system used in a first supply engineering mode. The system comprises a first acquisition unit, a first determination unit, a first calculation unit and a second determination unit. According to the system, an engineering material receiving accounting management process is redesigned, the system adapts to a mode of changing business to increase, engineering construction requirements are met, impact on engineering construction is reduced, an original management mode is optimized, and economic benefits are improved. Therefore, by implementing the method and the system, the control management of the engineering material receiving accounting mode in the mode of changing business to increase is realized.

Cross-CAD (computer-aided design) platform drawing label information positioning and importing method and device

The invention discloses a cross-CAD platform drawing label information positioning and importing method, a cross-CAD platform drawing label information positioning and importing device, a storage medium and electronic equipment. The method comprises the steps that a target CAD drawing frame is displayed on a CAD platform, the target CAD drawing frame comprises CAD drawing label information, and the CAD drawing label information is information associated with a target drawing label; in response to the drawing signature positioning import request, performing structured processing on the CAD drawing signature information to obtain structured target data of a target drawing signature; the target data is imported into an informatization platform for visual display, and the informatization platform is another platform except the CAD platform. The technical problem that the use efficiency of the picture label information is low is solved.

Method for preparing compound lining material of blast furnace

The invention belongs to the field of fireproof materials and relates to a method for preparing a novel compound lining material used in a blast furnace, in particular to a method for preparing a nonmetal compound lining material used in a furnace body of the blast furnace. The method comprises the following steps: using high-aluminum alumina chamotte, carborundum, metallic silicon powder, silicon ash and artificial graphite as main raw materials, using CA50 fireproof cement as a bonding agent, adding a right amount of admixture, and after mixing and smelting, injecting pulp into a relevant mould for moulding, curing for days and then stripping and baking to obtain the Al2O3-SiC-C compound lining material. The method is favorable to constructing special-shaped brick furnace linings at the weak positions of the furnace body, such as special-shaped edges, corners, holes and the like and enhancing the construction quality, and the whole furnace lining which has no seam after being poured and ...

Slurry pressure range determination method and device, electronic equipment and storage medium

The invention provides a mud pressure range determination method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining main macroscopic parameters of a soil body, a static soil pressure coefficient, performance indexes of mud and drilling parameters; according to the main macroscopic parameters, the static soil pressure coefficient, the performance index, the drilling parameters and a first preset formula, lower limit pressure is obtained; according to the main macroscopic parameters, the static soil pressure coefficient, the drilling parameters and a second preset formula, the upper limit pressure is obtained; and obtaining a slurry pressure range according to the lower limit pressure and the upper limit pressure. According to the method and the device, the problem that an accurate and reasonable slurry pressure range is difficult to obtain in related technologies is solved.

Polyolefin catalyst prepolymerization method, polyolefin polymerization method and application thereof

The invention relates to the field of olefin polymerization, and discloses a polyolefin catalyst prepolymerization method, a polyolefin polymer preparation method and application thereof. The method comprises the following steps: in a prepolymerization reactor, contacting an olefin monomer with a polyolefin catalyst composition for prepolymerization reaction to obtain prepolymerization catalyst slurry, and conveying the prepolymerization catalyst slurry to a main reactor; and controlling the temperature of the prepolymerized catalyst slurry conveyed to the main reactor to be less than or equal to 20 DEG C and the flow velocity to be greater than 0.1 m/s. According to the polyolefin catalyst prepolymerization method or the polyolefin polymerization method, the scaling and blocking risks of the conveying pipeline of the main reactor can be remarkably reduced, and the operation stability of the device is improved.

Preparation method of conductive magnetic fluid

The invention discloses a preparation method of a conductive magnetic fluid, and relates to a preparation method of a magnetic fluid. The invention aims to solve the problem of poor conductivity of the existing magnetic fluid. The method comprises the following steps: 1, preparing an iron acetylacetonate solution; 2, preparing a carbon material dispersion liquid; 3, mixing the ferric acetylacetonate solution, the carbon material dispersion liquid and the conductive polymer material, and reacting for a period of time; 4, centrifuging and cleaning to obtain conductive polymer baggage carbon loaded Fe3O4 magnetic powder; and 5, adding the conductive polymer-wrapped carbon-loaded Fe3O4 magnetic powder, a carbon material and a surfactant into the carrier liquid, and heating and stirring to obtain the conductive magnetic fluid. Oxidation of the magnetic nanoparticles is effectively controlled by wrapping conductive macromolecules and carbon loading, so that the magnetic performance of the magnetic ...

Compound as SOS1 inhibitor and application thereof

The invention belongs to the field of medical chemistry, relates to a compound serving as an SOS1 inhibitor and application of the compound, and particularly provides a compound shown in a formula (I) or an isomer, pharmaceutically acceptable salt, solvate, crystal or prodrug of the compound. Processes for their preparation, pharmaceutical compositions containing these compounds and the use of these compounds or compositions for the treatment of SOS1-related diseases.

Vibration isolation plate device in soil matrix treatment engineering and construction technology thereof

The invention discloses a vibration isolation plate device in soil matrix treatment engineering. The device comprises a vibration isolation array composed of multiple parallel vibration isolation units, wherein the front end of the first vibration isolation unit located at one end of the vibration isolation array is closed to prevent soil from falling, the connection parts of every two adjacent vibration isolation units overlap to block soil, each vibration isolation unit comprises two vibration isolation veneers arranged in parallel in the vertical direction, and vibration isolation modules are arranged between every two vibration isolation veneers at intervals. The invention further discloses a construction technology using the device. Due to the arrangement of the vibration isolation veneers in an open trench, collapse of a trench wall during dynamic compaction caused by vibration can be avoided, and the vibration isolation effect of the vibration isolation trench can be guaranteed to ...

Polyester composition, preparation method and application thereof, and white reflective film

The invention relates to the field of polyester compositions, and discloses a polyester composition as well as a preparation method and application thereof. The polyester composition comprises 100 parts by weight of polyester; 8-55 parts by weight of cross-linked maleic anhydride copolymer microspheres; 0.1-15 parts by weight of an auxiliary agent; the crosslinking degree of the crosslinked maleic anhydride copolymer microspheres is greater than or equal to 65%, and the average particle size is 500-2000nm. The composition contains cross-linked maleic anhydride copolymer microspheres, the particle size distribution of the copolymer microspheres is uniform, good dispersion in a polyester matrix can be realized under the condition that a dispersing agent and a compatilizer are not used, and an agglomeration phenomenon is avoided; the defects of non-uniform size and distribution, poor dispersity, poor compatibility and the like of inorganic particles can be avoided. When the composition is ...

Multiphase copolymerization polypropylene production process

The invention provides a multiphase copolymerization polypropylene production process. The production of a high-performance multiphase copolymerization polypropylene product is realized with two reactors by adopting a method of connecting a liquid phase body reactor and a gas phase reactor in series. Propylene homopolymerization or random copolymerization is performed in the liquid phase body reactor, and the discharge of the liquid phase reactor directly enters the gas phase reactor without any vaporization or flash separation process. Components in the gas phase reactor are continuously analyzed by using on-line analysis means such as gas chromatography (GC) and the like so as to keep the gas phase reaction under constant temperature, pressure and gas phase composition. The circulating gas part of the gas phase reaction is condensed, and the rectified condensate returns to the liquid phase reactor for recycling. The compressed gas phase is conveyed back to the gas phase reactor. Moreover ...

Snowmobile sleigh racing track transformation method, snowmobile sleigh racing track and snowmobile sleigh body

The invention relates to the technical field of building construction, in particular to a snowmobile and sleigh racing track transformation method, a snowmobile and sleigh racing track and a snowmobile and sleigh car body for public experience and entertainment, and the snowmobile and sleigh racing track transformation method comprises the following steps: S1, foundation treatment; s2, grinding a racing track paving material, wherein the racing track paving material is engineering plastic material cloth; paving the racing track paving material on the ground with the bottom upward, and then polishing the surface of the bottom layer of the racing track paving material; s3, primer spreading and coating; s4, bonding the slide way; s5, cleaning the site; and S6, arranging a sled laying material corresponding to the racing track laying material at the bottom of the rubber sled. According to the method, the functions of the snowmobile and sleigh racing track after racing can be effectively expanded ...

Novel controllable bending guide wire and preparation method thereof

The invention relates to the technical field of guide wires, in particular to a novel controllable bending guide wire and a preparation method thereof. The technical scheme comprises a spring; the bending control handle body is arranged at the head end of the spring; the insertion assembly is arranged at the tail end of the spring; wherein the insertion assembly is composed of a hollow pipe and a TPU pipe, and the hollow pipe is sleeved with the TPU pipe; wherein a plurality of square holes are formed in the pipe wall of one side of the hollow pipe; the core wire and the steel wire are arranged in the spring in a penetrating manner; wherein the core wire is arranged on the steel wire; and the tail ends of the core wire and the steel wire are fixedly arranged in the square hole at the far end of the hollow pipe through a hold-down ring. The guide wire has the advantages that the bent part of the pipe wall of the bent hollow pipe is hollow due to the arrangement of the square hole, the folded ...

Fused tricyclic compound and applications thereof

The invention relates to a fused tricyclic compound and applications thereof. The present invention provides a compound having growth factor receptor inhibitory activity and represented by a general formula (I), a pharmaceutically acceptable salt, an isomer, a solvate, a crystal or a prodrug thereof, a drug composition containing the compounds, and applications of the compounds or the composition in drug preparation. The compound of the present invention provides good inhibition activities for VEGFR2 or FGFR1. The formula I is defined in the instruction.

Rapid and stable control method for compartment temperature of refrigerating system

The invention discloses a rapid and stable control method for the chamber temperature of a refrigerating system. The rapid and stable control method for the chamber temperature of the refrigerating system comprises the steps that the current target temperature of a temperature control chamber and the actual temperature of the temperature control chamber are obtained; the current temperature deviation of the temperature control chamber is obtained according to the current target temperature of the temperature control chamber and the actual temperature of the temperature control chamber; and the current control mode of the electronic expansion valve of the temperature control chamber is determined according to the current temperature deviation and the preset temperature deviation of the temperature control chamber, and the opening degree of the electronic expansion valve is regulated and controlled according to the current control mode. Through the method, the chamber temperature can be rapidly ...

Transaction concurrent processing method and device for bank high-frequency hotspot pool account

The invention relates to the technical field of high-frequency hotspot data processing, in particular to a bank high-frequency hotspot pool account transaction concurrent processing method and device, and the method comprises the steps: receiving the business operation of a plurality of users on a plurality of sub-accounts; business operations of the multiple sub-accounts are recorded in a transaction flow registration book; if the business operation is entry, marking the entry flow as non-entry, summarizing the amounts corresponding to the plurality of entry flows marked as non-entry according to the set trigger time to obtain the total entry amount, updating the balance of the main account according to the total entry amount, and marking the flows as entry, and if the business operation is charge-out, charge-out verification is carried out, and the balance of the main account is updated according to the amount of charge-out flow after verification is passed. Through the embodiment of ...

Targeting fusion peptide for inhibiting NR5A2 nuclear transport and application

The invention belongs to the field of biological medicine, and relates to a targeting fusion peptide for inhibiting NR5A2 nuclear transport and application. The fusion peptide comprises an N-terminal cell-penetrating peptide and a C-segment leading peptide, and the amino acid sequence of the fusion peptide is shown as SEQ ID NO: 1. According to a biological center rule, a transcription factor NR5A2 nuclear localization signal key sequence is researched, a leading peptide for targeted inhibition of NR5A2 nuclear transport is designed and synthesized according to the key sequence, the fusion peptide is further prepared, and experiments prove that the fusion peptide can significantly inhibit the growth of pancreatic cancer cells.

Novel black fungus strain and breeding method thereof

The invention relates to a new strain Zhenxing No.1 of Auricularia auricula, which is characterized in that a wild sample is collected in the Zhuanghuangzheng region of Tianjiang city in Inner Mongolia autonomous region, and the record number of a molecular marker GenBank for identifying the strain is OP787948. The strain provided by the invention is high in hypha growth speed, strong in stress resistance and strong in infectious microbe resistance, and still has advantages under a low-nutrition condition. In the fruiting stage, primordium formation is fast, fruiting is neat, stress resistance is high, the auricularia auricula is thick and solid, the color is dark, the yield is high, the quality is good, the taste is rich, and the taste is chewy and smooth, so that the variety has competitiveness in production and market.

Data center cold supply system and control method

The invention relates to the technical field of data center cooling, in particular to a data center cooling system and a control method. The data center cold supply system comprises a data center air conditioner cabinet, a first heat exchanger, a second heat exchanger, a cooling unit and a cooling tower and has a first working condition, a second working condition, a third working condition, a fourth working condition and a fifth working condition. The data center air conditioner cabinet can achieve heat exchange through at least one cold source in the cooling tower, the surface water source and the cooling unit. According to the data center cooling system provided by the invention, the conditions of using a natural cold source to participate in cooling are widened, the gradient utilization mode of the natural cold source is adopted, the utilization time proportion of the natural cold source all the year round is remarkably increased, and the energy consumption proportion for cooling a ...

PROPYLENE HOMOPOLYMER HAVING HIGH MELT STRENGTH AND PREPARATION METHOD THEREOF

Abstract The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight5 distribution and containing "very high molecular weight fraction" can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirment for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechnical properties, especially with very high melt strength. The present invention also provides a propylene10 homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10g/10min at 230°C with a load of 2.16kg; (2) the molecular weight distribution Mw/Mn is 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8wt%; (4) M1+ ...

Remote sensing data processing method and device, electronic equipment and storage medium

The invention discloses a remote sensing data processing method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining remote sensing data collected by different remote sensors, carrying out the geometric processing and radiation processing of the remote sensing data based on the types of the remote sensors and setting parameters, and obtaining first remote sensing data corresponding to a target region, the first remote sensing data is subjected to normalization processing based on time, space, angle, spectrum, polarization and phase to obtain standard remote sensing data, and the collected data is subjected to geometric and radiation processing, so that impurity data caused by different factors can be eliminated, data information covered by different cloud regions can be recovered, and the quality of the remote sensing data is improved. The phenomenon of product quality fluctuation caused by environment and operation differences and the like ...

Preparation method for high isotactic polybutene-1

The invention discloses a preparation method for high isotactic polybutene-1. According to the invention, low-temperature slurry is introduced for pre-polymerization to enable a better particle shape to be formed at the initial reaction stage of a polymer, and then the reaction temperature is increased, and bulk polymerization is performed; the polymer can continuously react under the condition of keeping the particle shape, and higher activity is realized. The obtained polybutene-1 product has high isotacticity and excellent particle shape.

Method and device for predicting service life of electromechanical actuator based on multi-mode self-attention

The invention discloses an electromechanical actuator service life prediction method and device based on multi-mode self-attention. The method comprises the steps of standardizing multi-mode sensor data of an electromechanical actuator; establishing a multi-modal self-attention model, wherein an encoding module comprises a plurality of parallel sub-encoding modules; the encoder module comprises a plurality of parallel encoding blocks with the same structure, and the encoder module maps encoding data to an encoding space to obtain an encoding vector; the residual life mapping module outputs the residual life of the electromechanical actuator; the multi-modal self-attention model is trained, and a trained multi-modal self-attention model is obtained; and inputting the standardized multi-modal sensor data of the electromechanical actuator into the trained multi-modal self-attention model to obtain the residual life of the electromechanical actuator. The multi-modal self-attention model provided ...

钢筋混凝土构件中的钢筋搭接、锚固方法

... 本发明涉及一种钢筋混凝土构件中的钢筋搭接、锚固方法，适用于钢筋混凝土剪力墙结构和框架剪力结构及钢筋混凝土多墙类建筑如CL体系等。在钢筋混凝土墙、梁、柱的钢筋端部加弯钩或卡使其与垂直向钢筋钩连接或卡连接。根据需要可加焊第二钩或卡，并多个钩或卡与垂直向钢筋钩连或卡连接。从而有效减少钢筋搭接长度，也可减少相邻钢筋交错搭接的要求。从而节约钢筋，降低钢筋绑扎难度，减少施工工序，并便于钢筋定位。 ...

Method for preparing ceramic powder containing beta-Sialon by using silt sand

The invention relates to a method for preparing ceramic powder containing beta-Sialon by using silt sand, belonging to the technical field of integrated utilization of ceramic and refractory materials and solid wastes. The method takes water conservation solid waste silt sand as a main raw material, adds appropriate amount of alumina, matches reductant carbon and adds appropriate amount of binding agent, mixing and ball milling are carried out, then the mixture is arranged in a die for machine pressing and forming, a green body is arranged in a tubular furnace, coke is buried, the sintering is carried out under a flowing nitrogen atmosphere, a sintered product is smashed, and then the carbon is removed, thereby obtaining the ceramic powder containing the beta-Sialon, the main ingredient thereof is beta-Sialon or beta-Sialon-Al2O3. The method is simple, the preparation conditions are easy to control, and the obtained product is purer. The prepared material can be widely applied in metallurgy ...

PROPYLENE HOMOPOLYMER HAVING HIGH MELT STRENGTH AND PREPARATION METHOD THEREOF

The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight distribution and containing “very high molecular weight fraction” can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirment for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechnical properties, especially with very high melt strength. The present invention also provides a propylene homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10 g/10 min at 230° C. with a load of 2.16 kg; (2) the molecular weight distribution M/Mis 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8 wt %; (4) M/Mis higher than or equal to 70. Said homopolymer can be used in the preparation of foam products, thermoforming products, biaxial stretching films, blown films and blow-molded products. 120-. (canceled)21. A process for preparing propylene homopolymer with high melt strength , characterized in that a propylene homopolymerization reaction of two or more stages is carried out in two or more reactors connected in series , whereinin the first stage, in the presence of a Ziegler-Natta catalyst comprising a first external electron donor component, propylene homopolymerization reaction is carried out under a polymerization temperature of 50-100° C., the MFR of the polymer obtained being controlled within a range of 0.01-0.3 g per 10 min, andin the second stage, based on the reactant from the first stage, a second external electron donor component is added to further carry out the propylene homopolymerization in the presence of hydrogen;the MFR of the polymer finally obtained is controlled within a ...

Method for synthesizing long carbon chain semi-aromatic nylon

The disclosure relates to a synthesis method of long carbon chain semi-aromatic nylon. The synthesis method comprises the following steps: mixing a wet powdery nylon salt, an antioxidant, a catalyst, a surfactant and pellets, and carrying out a one-step solid state polymerization under dynamic mixing to obtain a powdery nylon; under dynamic mixing, enabling the pellets to promote the stirring and mixing of the material and reducing material adhesion to the wall; the one-step solid state polymerization comprises a pre-solid state polymerization and a post-solid state polymerization; in the pre-solid state polymerization, ensuring the nylon salt and the prepolymer not to be molten; in the post-solid state polymerization, gradually reducing the system pressure to vacuum, and keeping the system pressure in vacuum state for at least 1 hour; the temperature of the post-solid state polymerization is not lower than the termination temperature of the pre-solid state polymerization.

Microspheric Ionomer Having Cross-Linked Structure, Preparation Method Therefor, Applications Thereof, and Preparation System Thereof

A microspheric ionomer having a cross-linked structure, a preparation method therefor, applications thereof, and a preparation system thereof. The ionomer comprises structure units A represented by formula (1), structure units B represented by formula (2), and a cross-linking structure provided by a cross-linking agent, M being separately selected from H, a metal cation, and a straight chain, a saturated alkyl of branched or ring-shaped C-C, R being H or a methyl; and metal cations are introduced to part of structure units A in the ionomer. The ionomer shows an outstanding effect on nucleation of PET, serves as a nucleating agent for PET modification, so as to obtain a corresponding PET composition. A system and method for continuously preparing maleic acid ester ionomer microspheres and cross-linked maleic acid ionomer microspheres, so as to achieve continuous preparation, washing and separation of ionomer microspheres, effectively stabilizes the separation effect, and avoids frequent start and stop operations of a centrifuge. 2. The ionomer according to claim 1 , wherein the molar content of the metal cation in the ionomer comprises 10-120% of the total molar amount of structure unit A in the ionomer.3. The ionomer according to claim 1 , wherein the cross-linking degree of the ionomer is ≥65%.4. The ionomer according to claim 1 , wherein the ionomer has an average particle size of 150 to 2000 nm.5. The ionomer according to claim 1 , wherein the molar ratio between the structure unit A and the structure unit B is 100:(100-120).6. The ionomer according to claim 1 , wherein the molar ratio between the structure unit A and the cross-linking structural unit is 100:(1-40).7. The ionomer according to claim 1 , wherein the cross-linking agent is selected from divinylbenzene and an acrylate cross-linking agent containing at least two acrylate groups claim 1 , wherein the structural formula of the acrylate groups is: —O—C(O)—C(R′)═CH claim 1 , with R′ being H or C-Calkyl.8. ...

Multi-energy distributed transaction and smart contract design method based on ethereum private chain

This invention involves a multi-energy distributed transaction and smart contract design method based on the Ethereum private chain. This method includes the following steps: 1) Setting the genesis node of the smart contract as an administrator node, while other nodes as user nodes; 2) Distinguishing system functions and account permissions between administrator nodes and user nodes. Only administrator nodes can add or delete the types of tradable energy in the blockchain through the energy switch function; 3) The user realizes multiple energy transactions at the same time, and the smart contract matches the information released by users based on the market supply and demand situation. This invention can effectively solve the problems of the centralization of the current energy trading system and insufficient security protection. At the same time, it provides an effective solution to the current limited development of blockchain technology in the field of multi-energy trading.

Multi-energy trading and management platform based on blockchain

This invention provides a method for building a multi-energy trading and management platform based on blockchain. Based on the attributes of different functions to be implemented in the energy trading and management platform, the platform is built by combining different advantages of blockchain technology and database technology. Deploy the functions of issuing transactions, matching transactions, and querying transaction information in Ethereum smart contract, store user registration information in a traditional database, and establish a mapping relationship between real information and lengthy blockchain accounts to make information of transactions on the market be displayed with real names. This method not only meets the needs of energy distributed transactions but also avoids the problem of incompatible string type data in Ethereum smart contracts which affects system performance. At the same time, the transaction data displayed with real names ensures the openness and legality of the transaction system. It has a strong reference significance for the development of new models of distributed energy trading.

Propylene homopolymer having high melt strength and preparation method thereof

The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight distribution and containing “very high molecular weight fraction” can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirement for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechanical properties, especially with very high melt strength. The present invention also provides a propylene homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10 g/10 min at 230° C. with a load of 2.16 kg; (2) the molecular weight distribution M w /M n is 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8 wt %; (4) M z+1 /M n is higher than or equal to 70. Said homopolymer can be used in the preparation of foam products, thermoforming products, biaxial stretching films, blown films and blow-molded products.

propylene homopolymer with high resistance to fusion, its use and its preparation process

homopolímero do propileno tendo resistência de fusão alta e método de preparação do mesmo. a presente invenção refere-se a um processo para preparar um polímero de propileno de resistência de fusão alta pela polimerização direta, compreendendo que um polimero de propileno com alta distribuição de peso molecular contendo ''fração de peso molecular muito alta'' pode ser preparado controlando as espécies e proporções do doadores de elétron externos no sistema de catalisador ziegler-natta em diferentes estágios na reação de acordo com o requisito para frações de peso molecular diferente no estágio de diferente polimerização de propileno da operação em série, e o dito polímero tem excelentes propriedades mecânicas, especialmente com resistência de fusão muito alta. a presente invenção também provê um homopolímero de propipelo com resistência de fusão alta, compreendendo as características a seguir: (1) a mfr é 0,2-10g/10min a 230<198>c com uma carga de 2,16kg; (2) a distribuição de peso molecular m~ w~/m^ n^ é 6-20; (3) o conteúdo da fração com peso molecular maior do que 5.000.000 é maior do que ou igual a 0,8% em peso: (4) m~ z+1~/m~ n~ é maior do que ou igual a 70. o dito homopolímero pode ser usado na preparação de produtos de espuma, produtos de termoformação, películas de elasticidade biaxial, películas de insuflar e produtos moldados por insuflação. propylene homopolymer having high melt strength and method of preparing it. the present invention relates to a process for preparing a high melt strength propylene polymer by direct polymerization, comprising that a high molecular weight propylene polymer containing "very high molecular weight fraction" can be prepared controlling the species and proportions of external electron donors in the ziegler-natta catalyst system at different stages in the reaction according to the requirement for fractions of different molecular weight at the stage of different propylene polymerization of the ...

Propylene homopolymer having high melt strength and preparation method thereof

The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight distribution and containing "very high molecular weight fraction" can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirment for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechnical properties, especially with very high melt strength. The present invention also provides a propylene homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10g/10min at 230°C with a load of 2.16kg; (2) the molecular weight distribution M w /M n is 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8wt%; (4) M z+1 /M n is higher than or equal to 70. Said homopolymer can be used in the preparation of foam products, thermoforming products, biaxial stretching films, blown films and blow-molded products.

Propylene homopolymer having high melt strength and preparation method thereof

Method and apparatus for generating low bit width hdr image, storage medium, and terminal

Method for synthesizing long carbon chain semi-aromatic nylon

The disclosure relates to a synthesis method of long carbon chain semi-aromatic nylon. The synthesis method comprises the following steps: mixing a wet powdery nylon salt, an antioxidant, a catalyst, a surfactant and pellets, and carrying out a one-step solid state polymerization under dynamic mixing to obtain a powdery nylon; under dynamic mixing, enabling the pellets to promote the stirring and mixing of the material and reducing material adhesion to the wall; the one-step solid state polymerization comprises a pre-solid state polymerization and a post-solid state polymerization; in the pre-solid state polymerization, ensuring the nylon salt and the prepolymer not to be molten; in the post-solid state polymerization, gradually reducing the system pressure to vacuum, and keeping the system pressure in vacuum state for at least 1 hour; the temperature of the post-solid state polymerization is not lower than the termination temperature of the pre-solid state polymerization.

Polypropylene Composition, Preparation Method therefor, and Article Made therefrom

A polypropylene composition, a preparation method therefor, and an article made therefrom, the polypropylene composition comprising: (a) 70-95% by weight of a crystalline homo-polypropylene having a isotactic pentad fraction of 96% or more and forming a continuous matrix phase in the polypropylene composition; (b) 5-30% by weight of an ethylene-propylene elastic copolymer containing 20-35% by weight of an ethylene structure unit and 65-80% by weight of a propylene structure unit, and forming a dispersed rubber phase in the continuous matrix phase, such that the rubber phase can at least partially deform under an orientation force and form an orientation state structure, wherein the ratio of melt mass flow rate measured at 230° C. and a 2.16 kg load of the crystalline homo-polypropylene and the polypropylene composition is 0.5-2.0. The polypropylene composition and article have a high gloss and good mechanical properties, and the preparation method is simple, low in cost and environmentally friendly; and the article can be used in electric appliances, homes, packaging, automobiles, toys, or the medical field.

Microspheric ionomer having cross-linked structure, preparation method therefor, applications thereof, and preparation system thereof

A microspheric ionomer having a cross-linked structure, a preparation method therefor, applications thereof, and a preparation system thereof. The ionomer comprises structure units A represented by formula (1), structure units B represented by formula (2), and a cross-linking structure provided by a cross-linking agent, M being separately selected from H, a metal cation, and a straight chain, a saturated alkyl of branched or ring-shaped C 1 -C 20 , R being H or a methyl; and metal cations are introduced to part of structure units A in the ionomer. The ionomer shows an outstanding effect on nucleation of PET, serves as a nucleating agent for PET modification, so as to obtain a corresponding PET composition. A system and method for continuously preparing maleic acid ester ionomer microspheres and cross-linked maleic acid ionomer microspheres, so as to achieve continuous preparation, washing and separation of ionomer microspheres, effectively stabilizes the separation effect, and avoids frequent start and stop operations of a centrifuge.

Multi-vehicle coordination-based vehicle scheduling system, method, electronic apparatus, and storage medium

A multi-vehicle coordination-based vehicle scheduling system and method, an electronic apparatus, and a storage medium. The scheduling system includes a parameter module (310) configured for determining a scheduling parameter; a scheduling module (320) configured for determining a scheduling result; a coordination module (330) configured for determining a coordination impact value; a correction module (340) configured for correcting the scheduling parameter, the correction module judging whether the coordination impact value is no less than a preset threshold, correcting the scheduling parameter based on a judgment result that the coordination impact value is no less than the preset threshold, and re-determining the scheduling result and the coordination impact value based on the corrected scheduling parameter; and an output module (350) configured for outputting the scheduling result based on the judgment result that the coordination impact value is less than the preset threshold. Sequence order and task assignment problems when scheduling multiple vehicles are effectively solved, and problems of multi-vehicle conflict, congestion and impractical arrangement caused by multi-vehicle operation are perfected and solved, thus effectively improving the completion efficiency of transportation tasks.

Grafting-modified polypropylene material and preparation method therefor

A grafting-modified polypropylene material for insulating materials and a preparation method therefor. The grafting-modified polypropylene material comprises a structural unit derived from co-polypropylene and a structural unit derived from an alkenyl-containing polymerization monomer. On the basis of the weight of the grafting-modified polypropylene material, the content of the structural unit derived from an alkenyl-containing polymerization monomer and in a grafting state in the grafting-modified polypropylene material is 0.1-14 wt%. The co-polypropylene has at least one of the following characteristics: the content of the comonomer is 0.5-40 mol%; the content of the xylene soluble matter is 2-80 wt%; the content of the comonomer in the soluble matter is 10-70 wt%; and the intrinsic viscosity ratio of the soluble matter to polypropylene is 0.3:5. The material can balance both the mechanical and electrical properties at higher operating temperatures.

Grafting-modified polypropylene material and preparation method therefor

The invention belongs to the field of polymers, and relates to a grafting-modified polypropylene material for an insulating material and preparation method thereof. The grafting-modified polypropylene material comprises structural units derived from a polypropylene copolymer and structural units derived from an alkenyl-containing polymerizable monomer; the content of the structural units derived from the alkenyl-containing polymerizable monomer and in a grafted state in the grafting-modified polypropylene material is 0.1 to 14 wt %; the polypropylene copolymer has at least one of the following characteristics: the comonomer content is 0.5 to 40 mol %; the content of xylene solubles is 2 to 80 wt %; the comonomer content in the xylene solubles is 10 to 70 wt %; the intrinsic viscosity ratio of the xylene solubles to the polypropylene copolymer is 0.3 to 5. The grafting-modified polypropylene material of the invention can give consideration to both mechanical property and electrical property at a higher working temperature.

Combined thermoelectric cooler and warmer

Distributed energy transaction matching method based on energy network constraints and multiple knapsack model

This invention provides a distributed energy transaction matching method based on energy network constraints and multiple knapsack model. First, it considers the matching between financial market transactions and actual energy network scheduling, then generates security constraints on the results of distributed transactions. Next, it designs a multiple knapsack model for peer-to-peer distributed transactions, which can meet the common quotation needs of users or producers who issue transactions and achieve efficient matching under energy network security checks. Finally, the model is verified based on the blockchain Ethereum smart contract test verification. This method provides new ideas for the connection between distributed energy trading and actual physical dispatch, proposes an inclusive and efficient matching model for the point-to-point distributed trading market, which has great reference value for the connection between distributed energy trading and actual conditions.

Grafting-modified polypropylene material and preparation method therefor

Polyethylene composition and use thereof, and polyolefin microporous breathable film prepared therefrom

A polyethylene composition and the use thereof, and a polyolefin microporous breathable film prepared therefrom. The polyethylene composition comprises a polyethylene matrix resin and a pore-forming agent, wherein the content of the pore-forming agent is 30-110 parts by weight on the basis of 100 parts by weight of the polyethylene matrix resin, the pore-foaming agent comprises maleic anhydride copolymer microspheres, a copolymer in the microsphere comprises a structural unit A from maleic anhydride, a structural unit B from a vinyl-containing comonomer M and an optional cross-linking structure unit from a cross-linking agent, and the average particle size of the maleic anhydride copolymer microspheres is 500-2000 nm. The polyethylene composition can be used for preparing a breathable film without using a coupling agent, a dispersing agent and/or a surfactant, and achieves uniform air permeability and a high water vapor transmission rate. The film can be used for breathable composite products such as sanitary products, medical products, and food packaging or building products.

Data transmission protocol execution methods and apparatuses

This specification provide computer-implemented methods, and apparatuses for data transmission protocol execution and data storage. Execution of a data transmission protocol includes an initiator and a receiver. In an example execution process, a first application serving as the initiator encapsulates protocol information related to a transmission handshake protocol, ciphertext data obtained by encrypting target privacy data using an encryption method determined based on the protocol information, signature information obtained by digitally signing the ciphertext data and the protocol information using a private key, field content of an attestation field, and the like into a data transmission unit. The attestation field is used to fill a remote attestation report that includes public key information of the initiator. A second application serving as the receiver decapsulates the data transmission unit, and uses the target privacy data after verifying the signature information and the like in the decapsulated data transmission unit.

A file transmitting method and apparatus

A file transmitting method and apparatus is disclosed. The method comprises: receiving an asynchronous upload request sent from a front-end, and receiving a plurality of the fragment files uploaded by the front-end after the asynchronous upload request being responded; wherein, the plurality of the fragment files are generated by means of dividing the transmission files by the front-end; performing multithreaded storage on the plurality of the fragment files to generate a file storage execution result, and sending the file storage execution result to the front-end; receiving a file merging request sent from the front-end, and merging the plurality of fragment files based on the file merging request to generate a storage file; wherein, the file merging request is generated by the front-end based on the file storage execution result. The present method improves the transmission speed of files, avoids the problem of synchronous request users waiting timeout, and allows the user to perform other business data processing while transmitting files, effectively saving waiting time for business processing.

Polyethylene composition and use thereof, and polyolefin microporous breathable film prepared therefrom

A polyethylene composition and the use thereof, and a polyolefin microporous breathable film prepared therefrom. The polyethylene composition comprises a polyethylene matrix resin and a pore-forming agent, wherein the content of the pore-forming agent is 30-110 parts by weight on the basis of 100 parts by weight of the polyethylene matrix resin, the pore-foaming agent comprises maleic anhydride copolymer microspheres, a copolymer in the microsphere comprises a structural unit A from maleic anhydride, a structural unit B from a vinyl-containing comonomer M and an optional cross-linking structure unit from a cross-linking agent, and the average particle size of the maleic anhydride copolymer microspheres is 500-2000 nm. The polyethylene composition can be used for preparing a breathable film without using a coupling agent, a dispersing agent and/or a surfactant, and achieves uniform air permeability and a high water vapor transmission rate. The film can be used for breathable composite products such as sanitary products, medical products, and food packaging or building products.

Polyethylene composition and use thereof, and polyolefin microporous breathable film prepared therefrom

A polyethylene composition and the use thereof, and a polyolefin microporous breathable film prepared therefrom. The polyethylene composition comprises a polyethylene matrix resin and a pore-forming agent, wherein the content of the pore-forming agent is 30-110 parts by weight on the basis of 100 parts by weight of the polyethylene matrix resin, the pore-foaming agent comprises maleic anhydride copolymer microspheres, a copolymer in the microsphere comprises a structural unit A from maleic anhydride, a structural unit B from a vinyl-containing comonomer M and an optional cross-linking structure unit from a cross-linking agent, and the average particle size of the maleic anhydride copolymer microspheres is 500-2000 nm. The polyethylene composition can be used for preparing a breathable film without using a coupling agent, a dispersing agent and/or a surfactant, and achieves uniform air permeability and a high water vapor transmission rate. The film can be used for breathable composite products such as sanitary products, medical products, and food packaging or building products.

Microspheric ionomer having cross-linked structure, preparation method therefor, applications thereof, and preparation system thereof

A microspheric ionomer having a cross-linked structure, a preparation method therefor, applications thereof, and a preparation system thereof. The ionomer comprises structure units A represented by formula (1), structure units B represented by formula (2), and a cross-linking structure provided by a cross-linking agent, M being separately selected from H, a metal cation, and a straight chain, a saturated alkyl of branched or ring-shaped C1-C20, R being H or a methyl; and metal cations are introduced to part of structure units A in the ionomer. The ionomer shows an outstanding effect on nucleation of PET, serves as a nucleating agent for PET modification, so as to obtain a corresponding PET composition. A system and method for continuously preparing maleic acid ester ionomer microspheres and cross-linked maleic acid ionomer microspheres, so as to achieve continuous preparation, washing and separation of ionomer microspheres, effectively stabilizes the separation effect, and avoids frequent start and stop operations of a centrifuge.

Method for forming a support system of a ski track

The present disclosure relates to a method for forming a support system of a ski track, belonging to the technical field of ski tracks, and solves the problem of poor seismic performance of tracks in prior art. Step 1: according to the shape of the track, arranging number and positions of track shear walls and track support columns; step 2: pouring base concrete of the track; at the same time, arranging second central support columns for the track shear walls and first center support columns for the track support columns in the base concrete; step 3: pouring the track shear walls and the track support columns; step 4: pouring track concrete over the track shear walls and the track support columns. The present disclosure realizes rapid pouring and forming of the support system for the ski track, and realizes elastic support for main body of the track, and improves the seismic performance of the track.

Method for forming a support system of a ski track

The present disclosure relates to a method for forming a support system of a ski track, belonging to the technical field of ski tracks, and solves the problem of poor 5 seismic performance of tracks in prior art. Step 1: according to the shape of the track, arranging number and positions of track shear walls and track support columns; step 2: pouring base concrete of the track; at the same time, arranging second central support columns for the track shear walls and first center support columns for the track support columns in the base concrete; step 3: pouring the 10 track shear walls and the track support columns; step 4: pouring track concrete over the track shear walls and the track support columns. The present disclosure realizes rapid pouring and forming of the support system for the ski track, and realizes elastic support for main body of the track, and improves the seismic performance of the track.

Water pollution treatment device

A water pollution treatment device, comprising a collecting mechanism, a conveying and crushing mechanism and a separating and recycling mechanism for treating pollution in small and medium-sized reservoirs and river channels. The collecting mechanism comprises a first collecting mechanism disposed at an inlet end of the conveying and crushing mechanism; an outlet end of the conveying and crushing mechanism is connected to the separating and recycling mechanism which is used for separating crushed objects and moisture; the first collecting mechanism comprises a fixed housing (400) and a dirt collecting assembly walking device. Surface or underwater debris in a small and medium-sized reservoir and river channel can be sufficiently salvaged and removed, the collected debris occupy less space, moreover, the labor intensity is reduced, and on the premise that a subsequent irrigation operation is not affected, debris such as underwater silt is effectively removed without releasing a stored water source.

Polypropylene composition, preparation method therefor, and article made therefrom

Multi-vehicle coordination-based vehicle scheduling system and method, electronic apparatus, and storage medium

A multi-vehicle coordination-based vehicle scheduling system and method, an electronic apparatus, and a storage medium. The scheduling system includes a parameter module configured for determining a scheduling parameter; a scheduling module configured for determining a scheduling result; a coordination module configured for determining a coordination impact value; a correction module configured for correcting the scheduling parameter, the correction module judging whether the coordination impact value is no less than a preset threshold, correcting the scheduling parameter based on a judgment result that the coordination impact value is no less than the preset threshold, and re-determining the scheduling result and the coordination impact value based on the corrected scheduling parameter; and an output module configured for outputting the scheduling result based on the judgment result that the coordination impact value is less than the preset threshold. Sequence order and task assignment problems when scheduling multiple vehicles are effectively solved.