Method for collecting dioxin from incineration flue gas of household garbage

The invention discloses a method for collecting dioxin from incineration flue gas of household garbage. The method comprises the following steps: the incineration flue gas of the household garbage sequentially passes through a first-stage double-pipe heat exchanger, a filter cylinder and at least one stage after-treatment double-pipe heat exchanger; the flue gas flowing out of the last stage after-treatment double-pipe heat exchanger sequentially passes through a n-hexane gas-washing bottle, a buffer bottle, a glass filling tube, a toluene gas-washing bottle and a buffer bottle which are placed in an ice-water mixture; the inner wall of a heat exchange sleeve of the first-stage double-pipe heat exchanger is washed with toluene solution in the gas-washing bottle, and the toluene solution is collected after washing; and a collection bottle is arranged at the lower part of the first-stage after-treatment double-pipe heat exchanger, condensed water containing a dioxin matter generated by condensation ...

Technology for treating and fully-utilizing village-town house solid waste and domestic sewage

Application Manual in Collection and Regulation of Rural Well-off Residence Technology proposes indexes of comprehensive harmful treatment and utilization rate on treatment and utilization of both domestic waste and sewage. The invention, according to the common characteristic that the domestic waste and the sewage are both composed essentially of organic matters, discloses an integrated biological method for treating. The method comprises: first allowing facultative bacteria of a domestic waste heap to ferment and decompose the waste and realizing harmless treatment with the high temperature got in bacterial metabolism; using the produced CH4 for cooking; sorting the residuals for separate use; allowing the sewage (including sewage produced by organic decomposition) with the waste to flow over a gentle slope land (a land treating system) for further purification by aerobic bacteria and plants to remove VOD and COD contained therein so that all water can meet the discharge standard for ...

Solar and wind energy co-storing and co-using temperature adjustable boiler

The invention relates to a green boiler which takes light electricity and wind electricity as energy and has no emission of any pollutant. The temperature can be controlled, the green boiler can accurately and continuously supply hot water or steam, thereby being an ideal hot water supply and energy supply facility in the printing and dyeing, textile, silk reeling, paper making, foods, fermentation, chemical industry, power plant and the like; the device has simple structure and reliable and safe functions, the maintenance is unnecessary generally, the using cost is unnecessary, and the green boiler can be operated by just one person on duty. The green boiler can continuously supply the heat all around the year and all around the day for 20-25 years. The energy-saving and emission-reducing technology can benefit the nation and the people, and the nation has an award policy.

Preparation of camphor with isoborneol by gas-phase dehydrogenating

Pressurizer of hydraulic power system

The invention discloses a pressurizer of a hydraulic power system. The pressurizer of the hydraulic power system is used for providing powerful hydraulic power for a large-tonnage press machine. The pressurizer of the hydraulic power system comprises a base, a cylinder body, a piston, a cylinder body upper end cover and pull rods, wherein the base is fixed on the level ground, the cylinder body is installed on the base and is composed of an upper hydraulic cylinder and a lower hydraulic cylinder, the upper hydraulic cylinder and the lower hydraulic cylinder are assembled together through the set of pull rods, the diameter of an inner cavity of the upper hydraulic cylinder is smaller than that of an inner cavity of the lower hydraulic cylinder, the piston is of a step-shaped cylinder structure, the portion, with a large diameter, of the cylinder is assembled in the inner cavity of the lower hydraulic cylinder, and the portion, with a small diameter, of the cylinder is assembled in the inner ...

Classification method and device for high-dimensional unbalanced missing data, electronic equipment and medium

The invention relates to a high-dimensional unbalanced missing data classification method and device, electronic equipment and a medium, and relates to the technical field of big data. The initial data set has a high-dimensional imbalance missing characteristic; based on a plurality of features in the initial data set, selecting a target feature from the plurality of features, and taking data corresponding to the target feature as an initial subset; selecting a target filling algorithm from preset data filling algorithms, and performing data filling on the initial subset by using the target filling algorithm to obtain an intermediate data set; selecting a target resampling algorithm from preset data resampling algorithms, and resampling the intermediate data set by using the target resampling algorithm to obtain a target data set; and classifying the data in the target data set. Through feature selection, data filling and resampling, the high-dimensional imbalance missing feature of an ...

Solar universal high-efficiency collection device

Disclosed is a solar universal high-efficient collector which is adapted to any static and complex dynamic environments. According to the principle of optics, the solar universal high-efficient collector is manufactured by high polymer materials with high refractive index, high light transmittance and high uvioresistant capacity, and is composed of two portions, wherein the upper portion is a thin shell hemispheroid, and the lower portion is a photoconductive block of a rounding frustum. No matter how the elevating angle and the directional angel of the sun change, no matter how motion bodies (trains, automobiles, satellites and the like) utilizing sunlight rotate, the solar universal high-efficient collector has the area of 1/2 hemisphere face to the whole hemisphere face to collect sunlight 100% in the whole daytime. The change of the sunlight strength of a solar panel under the solar universal high-efficient collector is extremely low, thereby efficiently guaranteeing the use safety ...

Deodorant floor drain

The utility model provides a deodorant floor drain, the type belongs to bathroom technical field, including floor drain shell, the setting floor drain shell upper end outer along and be used for supporting and fixing floor drain shell's lateral frame, the hydrophobic double -edged fine -toothed comb of setting port on the floor drain shell upper end is used for closing cap floor drain shell, the drain pipe of setting on filtering component between hydrophobic double -edged fine -toothed comb and floor drain shell's the inner chamber and the bottom plate of setting at floor drain shell, still including set firmly on floor drain shell and heeling two big guide plates setting up to one side downwards and follow last two at the lower extreme of two big guide plates and open and lift the boardwith articulated setting the respectively, two are opened on the free end of lifting the board all fixed semi -circular deodorization boards that is used for the closing cap drain pipe that is equipped ...

Molecular dynamics simulation analysis method for ultrasonic disturbance of Piezo1 protein

The invention discloses a molecular dynamics simulation analysis method for ultrasonic disturbance of Piezo1 protein, and belongs to the field of ultrasonic disturbance. In molecular dynamics simulation, ultrasonic disturbance is realized by applying an ultrasonic function to the boundary, and successful ultrasonic loading is verified according to the water density of the X axis; an analysis method for explaining the influence of the ultrasound on the cell membrane from multiple angles through the cell membrane thickness and the interaction of lipid protein and further researching the influence of the cell membrane on the protein is established, and the influence of the ultrasound on the Piezo1 structure is obtained. According to the method, the conformation change of the Piezo1 mechanical sensitive ion channel is researched by adopting an ultrasonic wave loading coarse graining molecular dynamics simulation method for the first time, and an important research thought is provided for the ...

Rotary ampoule break-off opening and medicine-sucking operation device

The invention relates to an auxiliary medical appliance, in particular to a rotary ampoule breaking and opening and drug-absorbing handling device which is used for breaking an ampoule bottle neck to open the ampoule bottle and absorb liquid medicine. The device essentially consists of a pedestal, a rotary frame, a breaking device and an external cover, wherein, the rotary frame consists of a support pipe, a support bar and a support ring; an ampoule tube is suspended from the support ring; and the external cover is arranged at a fixed handle and covers over the rotary frame. The rotary ampoule breaking and opening and drug-absorbing handling device can break and open a plurality of ampoules and can absorb all the liquid medicine in the ampoule into an injector fast.

Yttrium aluminum garnet laser crystal doped growth device, crystal growth furnace and preparation method thereof

The invention discloses an yttrium aluminum garnet crystal doped growth device, a crystal growth furnace and a preparation method thereof, and belongs to the field of laser crystal preparation. The growth device includes a crucible, a thermal insulation cylinder arranged outside the crucible, a copper crucible induction arranged outside the thermal insulation cylinder and a seed crystal rod passing though the thermal insulation cylinder and extending into the crucible. The bottom of the thermal insulation cylinder is provided with a through hole for introducing nitrogen to the bottom of the crucible; the crucible is tungsten crucible or molybdenum crucible; and the thermal insulation cylinder is made of carbon doped boron nitride ceramics. Through the use of tungsten or molybdenum crucible, production cost is lowered; the carbon doped boron nitride ceramic thermal insulation cylinder carries out heat preservation on the crucible to prevent oxidation of tungsten or molybdenum at high temperature ...

Greenhouse group environment remote monitoring system based on field bus and 3G network

The invention discloses a greenhouse group environment remote monitoring system based on a field bus and a 3G network. The system comprises a remote monitoring upper computer which is connected with the Internet network through a 3G network and a field control module. The field control module comprises a field monitoring upper computer, a master network controller, a remote device controller, a remote I/O controller, a field environment factor collection unit and a field environment factor balancing unit, wherein the remote device controller, the remote I/O controller, the field environment factor collection unit and the field environment factor balancing unit are respectively arranged in various greenhouse environments. The field monitoring upper computer is connected with the master network controller. The master network controller is connected with a 3G module to being connected with the remote monitoring upper computer through the 3G network and the Internet network. The remote device ...

Solar wind energy industry furnace

A technology adopting solar energy and wind energy to displace the heat energy of various existing fuel furnaces and electric furnaces takes the chrome-nickel steel as an electrical heating element accessed to the photoelectricity or wind power to realize the conversion of electricity and heat so as to provide the required heat energy for the hearth. The technology can save the domestic total energy cost by more than 47.3 percent and then the greenhouse gases and other environment problems can be reduced correspondingly; the structure of the industrial furnace is simplified as various combustion devices and pipelines used for emission of smoke and gases are displaced and the space is saved; the unit energy cost can be reduced so as to largely enhance the productivity and reduce the manufacturing cost; and the furnace temperature is even, the automatic control can be realized and the quality of heating process is dramatically enhanced and stabilized. The technology leads the various domestic ...

Intelligent unmanned system and method based on digital twinning

The invention provides an intelligent unmanned system and method based on digital twinning, and the system is deployed on a target unmanned device, and comprises an interaction layer which is used for obtaining physical state data; the digital-intelligent twinborn layer comprises a physical twinborn model and an intelligent twinborn model; the physical twinborn model is used for modeling the target unmanned equipment according to the physical state data to obtain a physical twinborn body; the intelligent twinborn model is used for obtaining a plurality of intelligent twinborn bodies according to the physical twinborn body and a plurality of action strategies; the simulation layer comprises an environment simulation module, an evaluation module and a matching module; the environment simulation module is used for simulating the operation environment of the unmanned equipment; the matching module is used for matching the operation environment of the unmanned equipment with each digital-intelligent ...

SYNTHETIC PROCESS FOR OPTICAL ACTIVE CAMPHOR

The present invention provides a kind of camphor synthesis using Zn-Ca as catalyst. Said method makes borneol at fixed bed conduct solvent-less, gas phase and pressure reducing dehydrogenation, the temp. is 240-320 deg.C, pressure 0-60 mm Hg, when idle speed is 0.5-0.8/hr, the keeping rate of optical fineness of obtained camphor is equal to or larger than 99%, camphor pureness equal to or larger than 99%, dehydrogenated reaction selectivity equal to or larger than 99%, camphor yield equal to or larger than 95%.

Damp-heat area surroundings air conditioner

An environmental air conditioner in tropical areas is a creative application of the negative energy consumption fully-saved environmental air conditioner under the hygrothermal geographical conditions. The invention is mainly characterized in that the invention utilizes the arrangement of the building group to play the action of enclosure protection for the courtyard; an integral ceiling is additionally arranged on the top of the building group and the coldness storage function of the soils of the courtyard is utilized and then an underground dehumidification cooling facility is built outside the courtyard. The comprehensive functions are to provide stable temperature and humidity for the building and courtyard all year around, and the hazardous components, dust and the microorganisms are eliminated and the health-care air containing the oxygen and negative ions is increased. The air conditioning method does not increase the investment for construction but increases the value of the real ...

医用的微创切除器

... 微创切除器是一种医疗器械，包括有支撑架、弹性刀和控制器。工作原理是在B超或CT的引导和全程监控下，通过微创切除器上开启的弹性刀和自弹性刀上喷出的生物胶的联合作用，实现微创、直视下和以最小的风险在切而不除的条件下达到根治肿瘤的目的。可用于肝脏、脑部、肾上腺等部位肿瘤的切除。 ...

Method for constructing Lrp5A241T gene point mutation high bone mass mouse model

The invention provides a method for constructing an Lrp5A241T gene point mutation high bone mass mouse model, and belongs to the technical field of biology. Compared with a traditional Cre/loxP system, the method provided by the invention is simpler to operate, can realize precise gene modification, and has the advantages of short technical period and high efficiency. Besides, the mouse constructed by the invention only has target gene point mutation, does not carry other gene modification and is consistent with real mutation of patient population, and the mouse has high bone mass characterization through detection of modes such as microCT and the like; the method has important application significance in subsequent exploration of high bone mass related mechanisms, research and development of related targeted therapeutic drugs or gene modification therapy for treating osteoporosis and other diseases, and expansion of clinical application of LRP5 high bone mass mutation.

Heating device for crystal bonding and crystal bonding method

The invention discloses a heating device for crystal bonding and a crystal bonding method, and relates to the field of bonding technology.The heating device for crystal bonding comprises cylinders and further comprises two electrode supports, the two electrode supports are arranged at intervals, the cylinders are fixedly erected on the two electrode supports, the multiple cylinders are arranged on the electrode supports at intervals along the axis of the cylinders, and the two electrode supports are fixedly arranged on the cylinder. And the axes of all the barrels are collinear. The device has the effect that the situation that the cylinder is bent due to the large height is reduced.

Lubricating oil and waste oil integrated collecting and storing mechanism

The utility model discloses an integrated collection and storage mechanism for lubricating oil and waste oil. The integrated collection and storage mechanism comprises a first storage area and a second storage area, anti-seepage surface layers are arranged at the bottoms of the first storage area and the second storage area; supporting surface layers are arranged in the first storage area and thesecond storage area, and the supporting surface layers are arranged above the impermeable surface layer in an overhead mode; and an oil seepage channel is arranged on the supporting surface layer. Lubricating oil and waste oil are stored in different areas, so that centralized management of the lubricating oil and the waste oil is realized; through the anti-seepage surface layer arranged at the bottom, pollution caused by oil dripping permeation can be avoided; by means of the overhead supporting surface layer arranged above the anti-seepage surface layer, the effect of supporting the oil drumcan ...

Efficient utilization method of steam in potassium chloride dehydration process

The invention discloses an efficient utilization method of steam in the potassium chloride dehydration process. The method comprises the following steps: the saturated steam from a boiler room is divided into two paths, one path of saturated steam is decompressed by a relief valve and then enters a one-effect evaporating tank to perform complete heat transfer with a potassium chloride solution, condensation water is formed by a steam trap arranged at the outlet of the one-effect evaporating tank, then discharged to a one-effect balancing tank and sent to the boiler room for recycling; and the other path of saturated steam passes through a relief valve and then enters a waste heat recycling device, the steam performs heat transfer with potassium chloride solution in a two-effect evaporating tank and passes through a steam trap arranged at the outlet of the waste heat recycling device to form condensation water, and the condensation water is discharged to the one-effect balancing tank and ...

Handwritten numeral recognition method based on point density weighting online FCM clustering

The invention discloses a handwritten numeral recognition method based on point density weighting online FCM clustering. The method is used for processing the large-scale offline handwritten numeral recognition problem. The method includes the steps that (1), all handwritten numeral image sets are preprocessed; (2), clustering centers are initialized, and data points are made to sequentially enter processing procedures; (3), the membership degree of the current data point and all the clustering centers is calculated; (4), if the membership degree reaches a threshold value, the position of the nearest clustering center is updated; (5), if the membership degree does not reach the threshold value, the current data point is not processed and is temporarily placed in a to-be-processed region; (6), when the to-be-processed region reaches certain standards, data in the to-be-processed region are clustered through a point density weighting FCM algorithm, and the clustering centers are updated; ...

Method for synthesis of optically active camphor

Kiln using solar and wind energy as energy resource and drying equipment

The invention relates to a kiln which takes the solar energy and the wind energy as heat sources, and drying equipment; the kiln does not discharge any harmful ingredient of the greenhouse gases and powder, does not have noise and does not pollute dried products. The waste heat after used is utilized fully. The equipment can operate in long time and has little maintenance and the working life can reach to 20 to 25 years. The kiln can be used for calcination of raw materials of ceramics, bricks and cement. When the solar energy and the wind energy are used for baking food, grains, fiber wood, traditional Chinese medicinal materials and chemical products, low temperature is only needed, and all the measures of high temperature production and high temperature resistance can be eliminated, thus having more significant effects of saving energy and reducing cost.

Electronic connector with stable connection

The invention discloses an electronic connector with stable connection, which comprises a connecting terminal and a connecting end, an elastic sheet is arranged on the connecting terminal, a fixing plate is fixedly arranged on the connecting end, an anti-drop plug is arranged on the fixing plate, an anti-drop slot matched with the anti-drop plug is fixedly arranged on the connecting terminal, and the anti-drop plug is arranged in the anti-drop slot. A pull rod is installed on one side of the anti-falling plug, a fixing groove is fixedly installed on the connecting terminal, a fixing piece matched with the fixing groove is fixedly installed on the connecting end, a clamping groove matched with the pull rod is integrally formed in the elastic piece, the pull rod is installed in a sliding mode through a fixing sliding sleeve installed on the fixing plate, and the elastic piece is fixedly installed on the fixing plate. An anti-falling piece is installed on the fixing groove, and a pressing ...

500MN-extrusion equipment for producing large-diameter seamless steel pipes

The invention discloses 500MN-extrusion equipment for producing large-diameter seamless steel pipes. The 500MN-extrusion equipment comprises a base, a machine body frame, an extrusion executing mechanism, a hydraulic power system and a PLC (programmable logic controller) system, wherein the base is fixed to the underground part of equipment installation infrastructure; the machine body frame is fixed to the base and comprises a front group of gantry frame plates and a rear group of gantry frame plates, wherein each group of gantry frame plates is formed by fixing small pull rods which are arranged up and down uniformly; the front group of gantry frame plates and the rear group of gantry frame plates are fixedly assembled by an upper group of large pull rods and a lower group of large pull rods; the extrusion executing mechanism is arranged in a gantry cavity of the machine body frame; the hydraulic powder system is arranged on the underground part of the equipment installation infrastructure ...

Portable integrated PLC experimental box

The invention discloses a portable integrated PLC experimental box which comprises a PLC, a power module, a switching value input port, a switching value output port, an analog quantity input port, an analog quantity output port, a switching value given module, an NPN and PNP type sensor, a PT100 temperature sensor, a 24 V DC output port, a stepping motor module, a DC motor module, a voltage display gauge, a current display gauge, a liquid level stirring module, a buzzer and a relay module. The portable integrated PLC experimental box has the advantages of being small in experimental box size, convenient to carry, complete in function and low in price.

PREPARATION OF CAMPHOR WITH ISOBORNEOL BY GAS PHASE DEHYDROGENATION

This invention belongs to composition method of camphor. The ios-borneol proceeds gas phase decompression and dehydrogenation in fixed bed with zinc-calcium as catalyst. The dehydrogenation temp. is 240-320 deg.C., pressure is 0-60 mm Hg, space shifting of matter is 0.05-1.0 per hr. The technologic method provided by this invention has the adventages of simple operation, capably continuous proceeding, no need of solvent and no three-wastes. The conversion rate of iso-borneol is more than 98% and selectivity is more than 98%.

Method for synthesizing 3, 5-dibasic-1-adamantine alcohol

A process for synthesizing 3,5-disubstituent-1-adamantanol includes reaction between 1,3-disubstituent adamantane and bromine to obtain bromo compound, adding sodium oxalate and water, reaction, filtering and washing.

Growth device, growth furnace and preparation method of yttrium lithium fluoride laser crystals

The invention discloses a growth device, a growth furnace and a preparation method of yttrium lithium fluoride laser crystals, belonging to the field of laser crystals; the growth device comprises a crucible, a thermal insulation cylinder, a copper induction heating coil and a seed crystal rod, wherein the thermal insulation cylinder is arranged outside the crucible; the copper induction heating coil is arranged outside the thermal insulation cylinder; the seed crystal rod passes through the top of the thermal insulation cylinder and stretches into the crucible; a first circular hole having the diameter of 60-120mm and used for passing through the seed crystal rod is arranged in the middle at the top of the thermal insulation cylinder; the crucible is a platinum crucible or an iridium crucible; a nickel layer or a high-temperature resistant resin layer is formed on the outside surface of the copper induction heating coil in a spraying manner; and therefore, corrosion of fluoride gas can ...

A method for assembling RGD on the surface of porous pure titanium dental implant

The invention discloses an assembling method of RGD on the porous pure-titanium tooth plant surface, which comprises the following steps: adopting layer-to-layer electrostatic self-assembling technique to make the surface load positive charge through PEI; immersing plant into RGD solution; using attractive elementary of foreign charge to fix RGD on the PEI surface; crossing PEI and RGD through glutaraldehyde; immersing the plant into RGD solution to seal non-connected aldehydo; increasing RGD quantity; repeating these steps to obtain the product.

Method for making simvastatin drug-containing hydroxyapatite coating on surface of pure titanium

The invention discloses a method for depositing a simvastatin drug-containing hydroxyapatite coating on the surface of pure titanium by utilizing an electrochemical deposition process. The method comprises the following steps: polishing the surface of a pure titanium implant, sand-blasting, acid-etching, and depositing by utilizing an electrochemical deposition station, a simple apparatus and cheap materials to make the simvastatin drug-containing hydroxyapatite coating on the surface of the implant. The method has the advantages of simple preparation process, simple apparatus, low making cost, high making efficiency and the like, and the obtained coating has good biocompatibility and osteogenic cell proliferation differentiation promotion ability. A platform for making the drug-containing coating on the surface of pure titanium is established.

All -round formula range hood

The utility model discloses an all -round formula range hood relates to a range hood field. Including organism, air outlet means control panel, getter device control panel, switch, louvre, the passageway of airing exhaust, oil absorption cigarette hole, air outlet means, the hole of airing exhaust, inlet port, power. Air outlet means control panel be located the organism outside to link to each other with the organism, getter device control panel be located the organism outside and link to each other with the organism, the switch be located organism outside central authorities and link to eachother with the organism, the louvre arrange in machine body surface, the passageway of airing exhaust be located organism upper portion and organism and link to each other, oil absorption cigarette hole arrange inside the organism, air outlet means pass through the circuit and be connected with organism inner line, the hole of airing exhaust arrange in air outlet means upper portion, the inlet port ...

Self-service data analysis method and device based on data lake and electronic equipment

The invention provides a self-service data analysis method and device based on a data lake and electronic device.The method is applied to the technical field of data processing.The method comprises the steps that metadata information of the data lake is managed, and a metadata graph database is created; the metadata graph database stores the metadata information in a graph structure mode; the data of the data lake is partitioned and classified, a data asset map is generated, and the data asset map shows the distribution situation of data assets and the relation between the data assets in a graphical mode; positioning data to be analyzed according to the metadata graph database and the data asset map; performing ETL operation on the to-be-analyzed data, and collecting SQL statement information in the operation process; generating a blood relationship map according to the SQL statement information; and generating an analysis result of the to-be-analyzed data according to the blood relationship ...

Fermented type red radish health-care vinegar beverage formula and preparation method

The invention provides a fermented type red radish health-care vinegar beverage formula. Each ton of a health-care vinegar beverage is composed of following raw materials according to weight ratios: 100L of fermented red radish juice, 50L of freshly-squeezed red radish juice, 50kg of white granulated sugar, 2kg of citric acid, 1kg of malic acid, 0.5kg of Vc, 0.5kg of sodium citrate, 0.2kg of table salt, 0.2kg of potassium sorbate and the balance of water. The vinegar beverage provided by the invention is enriched with nutrient substances including an organic acid, an amino acid and the like; the detected total acid is 4.43% and meets a GB18187-2000 table vinegar brewing standard (more than equal to 3.5%); the content of amino nitrogen is 0.746g/dL; meanwhile, the vinegar beverage is enriched with abundant mineral ions; the contents of Fe and Cu are high and are 1.382mg/dL and 0.142mg/dL respectively; an antioxidant is not added into the vinegar beverage; the unique flavor and the nutritional ...

Improve pivot of oilhole

The utility model discloses an improve pivot of oilhole relates to a pivot field. Including shank, locking port, fixed screens, oil extraction way, oil outlet, end cap, recess, packing needle, the shank be cylindrical structure, locking port lie in fixed screens under, fixed screens lie in the oil outlet around to with shank fixed connection, the oil extraction way be located the axial direction of shank centre of a circle department to one end is located inside the shank, the oil outlet distribute in the surface of shank and two terminal surfaces of the connecting wire perpendicular to shankof each oil outlet centre of a circle department. The device can be very big the efficiency of carrying high pressure heater oil to do not influence the intensity of shank.

Excising device resulting in small incision

Excising device as a medical apparatus includes one support, one elastic cutter and one controller. Its operating principle is that under the guide and full-course monitoring of B-mode ultrasound or CT and by means of the combined function of the elastic cutter and the biological glue sprayed from the elastic cutter, a tumor is excised down radically leaving only a microtrauma. It may be used in excising tumor in liver, brain, adrenal gland, etc.

Post-processing method of iron-doped zinc selenide laser crystal

The invention discloses a post-processing method of an iron-doped zinc selenide laser crystal, and belongs to the technical field of laser crystal preparation. The method embeds the Fe2+: ZnSe laser crystal in a mixed powder body of iron powder and ZnSe powder, and implements the high-temperature annealing processing and the electronic beam radiation processing for the Fe2+: ZnSe laser crystal. The Fe2+: ZnSe laser crystal is embedded into the mixed powder body of the high-purity iron powder and the ZnSe powder, so that the temperature consistency of the area of the crystal is improved, and the residual stress is effectively eliminated; a reducing atmosphere and a ZnSe atmosphere can be provided for conveniently reducing Fe3+ ions to Fe2+ ions, restraining the volatilization of the ZnSe crystal and reducing and preventing Zn and Se vacancy defects. Through implementing the electronic beam radiation processing for the Fe2+: ZnSe laser crystal, the energy level trap of generating additional ...

Rotary ampoule break-off opening and medicine-sucking operation device

The invention relates to an auxiliary medical appliance, in particular to a rotary ampoule breaking and opening and drug-absorbing handling device which is used for breaking an ampoule bottle neck to open the ampoule bottle and absorb liquid medicine. The device essentially consists of a pedestal, a rotary frame, a breaking device and an external cover, wherein, the rotary frame consists of a support pipe, a support bar and a support ring; an ampoule tube is suspended from the support ring; and the external cover is arranged at a fixed handle and covers over the rotary frame. The rotary ampoule breaking and opening and drug-absorbing handling device can break and open a plurality of ampoules and can absorb all the liquid medicine in the ampoule into an injector fast.

Yttrium lithium fluoride composite crystal and preparation method thereof

The invention discloses an yttrium lithium fluoride composite crystal and a preparation method thereof, and belongs to the technical field of laser crystal preparation. According to the method, an yttrium lithium fluoride crystal on a c-axis crystal orientation is pre-boned at the end part of a doped yttrium lithium fluoride crystal on an a-axis crystal orientation with a direct bonding technology, and a first intermediate product is obtained; the intermediate product is subjected to pressure treatment in the direction perpendicular to the bonding surface of the first intermediate product, and a second intermediate product is obtained; and finally, under the vacuum condition, the second intermediate product is subjected to hot isostatic pressure treatment, and the yttrium lithium fluoride composite crystal is obtained. The prepared yttrium lithium fluoride composite crystal doesn't have the axial matching problem and has a low heat effect, thermally induced depolarization loss of the crystal ...

PCV2 ORF3 specific polypeptide and application

The invention discloses a PCV2ORF3 specific polypeptide and application thereof, and relates to the technical field of biology. The invention discloses a PCV2ORF3 specific polypeptide. The amino acid sequence of the PCV2ORF3 specific polypeptide is as shown in SEQ ID NO. 1. The invention also discloses an application of the specific polypeptide in preparation of an ELISA kit for detecting a PCV2 antibody. The ORF3 protein is selected as a target antigen, the epitope of the ORF3 protein is predicted and analyzed through a molecular biology method, the specific polypeptide of the ORF3 protein is used as a coating antigen to establish an ELISA method for detecting the PCV2 antibody, the method has good repeatability, sensitivity and specificity, PCV2 wild virus infected pigs can be identified from PCV2 subunit vaccine immunized pig herds, and the PCV2 subunit vaccine immunized pig herds can be used for detecting the PCV2 antibody in the PCV2 subunit vaccine immunized pig herds. Powerful technical ...

Method and device for determining activity rule of moving target, equipment and medium

The invention provides an activity rule determination method and device of a moving target, equipment and a medium. The method comprises the following steps: acquiring space-time trend information of a plurality of moving targets; determining the similarity of each pair of moving targets according to the space-time trend information; taking each moving target as a node, connecting each pair of moving targets of which the similarity is higher than a threshold value, and constructing a spatial-temporal feature network; obtaining an embedded vector of each moving target according to the spatial-temporal characteristic network; determining whether each moving target belongs to a low-activity set or a high-activity set according to the distribution condition of the embedded vectors; generating a candidate sequence set of the moving target according to the activity degree set where the moving target is located and the target event item of the moving target; inputting the candidate sequence set ...

CATALYZING COMPOUNDING ACETIC ISOBORNEOL ESTER FROM NATURAL SILKY TUSTRE ZEOLITE

User credit assessment method, federal learning system, device and equipment

The invention provides a user credit evaluation method, a federated learning system, device and equipment, which are applied to a federated learning system, the system comprises a federated server and a plurality of federated participants, and the method comprises the following steps: the federated server compiles a federated learning data demand according to a federated learning target task, the demand data format of each local data feature demand in the federated learning data demand is a data structure specified by the federated learning target task and used for federated learning; the plurality of federated participants generate corresponding OBDA mapping files according to the received local data feature requirements, and local data features conforming to the required data format are obtained according to the OBDA mapping files; the plurality of federated participants and the federated server perform iterative training based on the global federated learning model by using the local ...