Multi-stage orderedly arranged ZSM-5 nano rod bundle and preparation method thereof

The present invention belongs to the technical field of chemical engineering and relates, in particular, to a hierarchically arrayed ZSM-5 nano-rod bundle material and also to a preparing process thereof. The material has a bundle structure in large size; the rod bundle is very ordered in shape and consists of a plurality of flat strip-shaped ZSM-5 nano-rods arranged and piled in order along the c axis ([001]direction) thereof and thereby forms a hierarchically ordered structure. The material is prepared with hydrothermal one-step synthesis, which, more specifically, comprises crystallization of zeolite synthesizing solution under routine crystallizing conditions with water glass as the silicon source, with the porous metallic Raney Ni obtained after metallic aluminum extraction of nickel-aluminum alloy by sodium hydrate solution as the structure inductor and with ethylamine as micro-porous templates.

Process for producing antiviral viscose fiber

The invention relates to a method for preparing antibacterial viscose fiber, which comprises the following steps: (1) soaking pulverized cellulose in alkaline solution, squeezing to 2.5 to 5 times the dry weight, mechanically pulverizing, aging, vacuuming, adding CS2, sulfonating, adding alkaline solution, dissolving, and mixing uniformly with alkaline solution of antibacterial medicine to obtain a uniform and stable spinning stock solution; and (2) filtering the spinning stock solution, adding to coagulating bath to form as-spun fibers, stretching the as-spun fibers, and post-treating with the bath solution to obtain the antibacterial viscose fiber. The antibacterial viscose fiber obtained by the invention has the advantages of high resistance to various kinds of bacteria, high mechanical strength and high antibacterial durability, and the fiber still has certain antibacterial effect after cleaning for multiple times. The antibacterial viscose fiber can be widely used in the field of various ...

Cable-stayed roof structure of steam turbine house

The invention discloses a cable-stayed roof structure of a steam turbine house, and aims to overcome the defects that the bending moment of a roof bearing structure of the steam turbine house is large, and the middle position of a steel beam is easy to bend. The two ends of the roof beam are connected to stand columns respectively, a diagonal draw bar is connected to the position, close to the middle, of the roof beam, and the diagonal draw bar obliquely extends upwards and is connected to the stand columns. According to the cable-stayed steam turbine house roof structure, the span of the steam turbine house roof beam can be effectively reduced through the steam turbine house roof cable-stayed rods, so that the internal force of a steam turbine house roof bearing structure is effectively reduced, the section height of the steam turbine house roof beam is effectively reduced, the overall size of a steam turbine house is further reduced, and the overall manufacturing cost of the steam turbine ...

Separation nano membrane of hollow fibres and its preparing process

A nano-class separating hollow fiber membrane used in medicine, chemical and textile fields is prepared from cellulose and poly(ether sulfone) through adding solvent and additive, dissolving to obtain raw liquid, spinning, pore-keeping treating, washing in water and drying in air.

Improved support special for head for postoperative auxiliary recovery

The utility model discloses an improved support special for a head assisting in recovery after an operation. The improved support comprises a side supporting face, a front supporting face, a thorax and abdomen relaxing area, a shoulder stress area, a head stress area, an auxiliary breathing channel, an air duct and a face supporting air bag. The thorax and abdomen relaxing area is in arc connection with the shoulder stress area, and the thorax and abdomen relaxing area is a concave surface with an obliquely upward opening; wherein the shoulder stress area is a convex surface with an inclined downward opening, the head stress area is fixedly connected with the shoulder stress area, the head stress area is a gentle curved surface, and the surfaces of the thorax and abdomen relaxing area, theshoulder stress area and the head stress area are all made of soft materials. The auxiliary respiratory tract is arranged on the lower portion of the face supporting air bag, and the auxiliary respiratory ...

Health type viscose fiber with high wet modulus and its production process and use

The present invention is composed of cellulose and chitin with weight ration 2-9:0.02-2. Alkalifying and etiolating cellulose and chitin obtain the xanthogenate of cellulose and chitin. Dissolving the said xanthogenate of cellulose and chitin in sodium of hydroxide and water makes spinning dope. Using wet spinning or wet pipe forming methods, after drawing procedure makes the fiber. The physical and mechanical performance of the fiber can be enhanced after treatment with simple technique. The fiber can fabricate textile and cloth providing features of antibiosis, stopping itch and bleeding, odor dispelling. Fibrous membrane made by mixed cellulose with chitin as raw material can be used in artificial organs or water purifier.

Polysulfone and polyethy lene base polymer blend membrane, and its preparing and use

保健型高湿模量粘胶纤维、制造方法及用途

... 本发明涉及一种保健型高湿模量粘胶纤维，由重量比为2～9∶0.02～2的纤维素和甲壳素组成。系由甲壳素和纤维素分别或共同进行碱化、黄化生成甲壳素黄酸酯及纤维素黄酸酯，并溶解于氢氧化钠和水成纺丝原液，采用湿纺法或湿法管中成形法，拉伸成纤维。经后处理可提高其物理、机械性能。工艺简单，该纤维可制成抗菌、抗痒、消臭、止血的织物和服装。以共混纤维素、甲壳素为原材料制成的中空纤维膜，还可以组装成人工脏器或水的净化器。 ...

Material of artificial kidney for hemodialysis and its preparing method

Switching equipment and cable performance testing device

The invention discloses switching equipment and a cable performance testing device, the switching equipment comprises a box body, a connecting wire harness, and a first socket group, a second socket group and a plug group which are arranged on the box body, and the plug group comprises a plurality of plug type electric connectors; the first socket group comprises a plurality of conventional and universal socket type electric connectors; the second socket group comprises a plurality of socket type electric connectors; the connecting wire harness is arranged in the box body, and correspondingly and electrically connected with the first socket group and the second socket group and correspondingly and electrically connected with the first socket group and the plug group according to a set connection relationship; wherein the first socket group and the plug group are arranged on different side surfaces of the box body, the second socket group and the first socket group are arranged on different ...

Valve auxiliary device

The utility model relates to a valve the field, in particular to valve auxiliary device, including the casing, inlet port and egress opening that the casing was equipped with and switched on outward are equipped with the wall switch on the casing, inlet port department be equipped with the admission passage, this admission passage and casing are the step form, admission passage and casing are the one end and casing fixed connection of step form, the other end arrange in the pipeline and can be in the pipeline reciprocating sliding, be equipped with locating part and sealing member between pipeline and the admission passage, the casing one end that sets up the egress opening can dismantle with the valve and be connected, the utility model discloses a, a a valve auxiliary device that it is mobile that can assist the valve to cut off the medium is provided.

Image correcting method for thin layer chromatography imaging system

The invention belongs to the field of biomedical engineering, and relates to an image correcting method for a thin layer chromatography imaging system. The image correcting method comprises the steps that a two-dimensional photoelectricity position detector (PSD) is selected and placed on a detecting face; the rotating angle of an x galvanometer and the rotating angle of a y galvanometer are changed, and the two-dimensional photoelectricity position detector (PSD) is used for measuring the precise positions of scanning points; a scanning galvanometer calibration point database is established; fitting is carried out on the established database through a binary polynomial model; the corresponding light spot coordinates are calculated for the different rotating angles of the x galvanometer and the y galvanometer based on the confirmed binary polynomial model, and an image obtained through scanning is corrected. The image correcting method can correct scanned image distortion caused by inherent ...

Tangling paste and preparation method thereof

The invention relates to the technical field of food preparation, and particularly discloses a tangling paste and a preparation method thereof. The preparation method of the citrus reticulata blanco extract comprises the following steps: S11, adding the food gum, the exocarpium citri grandis extract and the sweetening agent into water, and uniformly stirring to obtain a raw material mixture; s12, the raw material mixture is heated for 20-60 min at the temperature of 70-90 DEG C under the sealed condition, and mixed slurry is obtained; s13, adding citric acid into the mixed pulp, and uniformly stirring to obtain jelly liquid; and S14, pouring the jelly liquid into a mold, and cooling to obtain the citrus medica extract. The Xinling paste disclosed by the invention is a product which is novel in effect, excellent in flavor and wider in audience range; wide application prospects are realized.

Polyvinylidene fluoride and polyethersulfone blending membrane, production method and uses

Preparation method and application of oil single-channel Janus membrane

The invention provides a preparation method of an oil single-channel Janus membrane, which comprises the following steps of: (1) oxidizing a copper net by using potassium persulfate to enable the copper net to have a super-hydrophilic characteristic; (2) treating the hydrophilic copper mesh with mercaptan to obtain a super-hydrophobic copper mesh; (3) carrying out single-side modification treatment on the fabric through an electrostatic spinning technology; and (4) the single-side performance is improved in manners of single-side coating of dopamine and the like. The biodegradable polylactic acid (PLA) is adopted as the raw material, and the green development concept is highly met. When the Janus membrane prepared by the method is used for a water-in-oil emulsion containing a stable surfactant, the separation flux reaches up to 6500 L m <-2 > h <-1 > bar <-1 >, and the separation efficiency is 99%. The prepared Janus membrane is used for intercepting a one-way diesel oil column, and the ...

Method for dissolving and processing hemp fibre by employing ionic liquid

The invention relates to a method of dissolving and processing a bamboo-hemp fibre by adopting an ionic liquid. The method has the following steps: firstly, the comminuted pulp of bamboo and hemp is well mixed with an ironic liquid, dissolved at a temperature of 35 to 160 DEG C, deaerated for 1 to 120 hours, and a homogeneous and stable spinning solution with a total solid content of 3 to 50 percent is formed, wherein, the mass ratio of bamboo and hemp is 1-99 percent to 99-1 percent; secondly, the spinning solution is filtered, deaerated, spinned and solidified through a coagulation bath; and thirdly, a bamboo-hemp blended composite fibre is obtained after the procedures of stretching, water cleaning, bleaching, oiling and drying. The ironic liquid used in the invention has high production efficiency, is easy for callback and conforms to the requirement of a green production. The prepared composite fibre has excellent mechanical strength and mechanical property and the fabric made of the ...

Preparation method of rosa roxburghii tratt fruit and black glutinous rice vinegar

The invention discloses a preparation method of rosa roxburghii tratt fruit and black glutinous rice vinegar. The method comprises the following steps: screening roxburgh rose fruits, filtering and sterilizing to obtain roxburgh rose normal juice; adding water to dilute the roxburgh rose normal juice to obtain a roxburgh rose juice diluent; washing, soaking and cooking the black glutinous rice, sprinkling the rice with cold boiled water, and cooling to obtain cooked black glutinous rice; adding saccharifying enzyme into the steamed and cooled black glutinous rice, and stirring to obtain saccharified black glutinous rice; activated yeast is added into the roxburgh rose juice diluent, the mixture is poured into the saccharified black glutinous rice, mixed lactic acid bacteria are added at the same time for fermentation, filtration and residue removal are conducted, and the roxburgh rose and black glutinous rice wine is obtained; inoculating acetic bacteria into the rosa roxburghii tratt and ...

Homogeneous bone for treating open fracture and preparation method thereof

The invention relates to a bone implant material for treating open bone defect with potential infection and a preparation method thereof, in particular to a bone allograft which is implanted for treating the open bone defect and made of the human bone allograft and the preparation method thereof. The invention can effectively control the local infection of the implanted bone without the second operation and reduce the toxicity or the side effects caused by systemic application of a large dose of an antibiotic of the existing treatment way by composite infiltration of an infectious bacteria-sensitive antibiotic and a sustained-release carrier of the antibiotic into a bone block of the allograft through the ultrasonic and vacuum composite operation, thereby being applicable to the bone transplantation treatment of the open bone defect with the potential infection.

HOLLOW FIBROUS MEMBRANE OF CELLULOSE MADE BY SOLOENT PROCESS

Device and method for measuring hot and cold deformation performance of material in real time

The invention discloses a device and a method for measuring hot and cold deformation performance of a material in real time, and relates to the field of hot and cold deformation measurement of materials, a heat preservation box is provided with a semiconductor refrigerator and a temperature sensor, and the semiconductor refrigerator and the temperature sensor are both connected to a microprocessor; a placement frame is arranged in the heat preservation box, and a sliding plate is connected to the placement frame in a sliding mode; the sliding plate is connected with a servo driving part, a displacement sensing part and a pressure sensor, and the servo driving part or/and the displacement sensing part are/is assembled on the inner wall of the heat preservation box or the placement frame; and the pressure sensor, the displacement sensor and the servo driving part are connected to the microprocessor. According to the invention, the deformation of the material in a high-temperature environment ...

Method for manufacturing cellulose fibroin composite fiber by using solvent method

The invention relates to a method for adopting a solvent method to prepare celluloses silk protein composite fibers and the method comprises: (1) the crushing celluloses and the silk protein are uniformly mixed with ionic liquids and the mixture is dissolved for 1 to 120 hours under the temperature of 25 to 160 DEG C, and the spinning solution is formed the total solid content of which is 3 to 40 percent, wherein, the mixture ratio of the celluloses and the silk protein is 99:1 to 1:99; (2) after filtering and deaeration, spinning and coagulating bath solidifying are carried out; (3) the composite fibers are formed after a plurality of steps such as tension, water-washing, bleaching, oiling and drying. By adopting the ionic liquids to prepare fibers, the long and complex production processes of the viscose method are avoided, the production process is significantly shortened, the energy consumption of technique and the operation cost are low, the cellulose composite fibers have good mechanical ...

Human body pressure distribution measuring device and method based on time domain reflection method

The invention relates to a human body pressure distribution measuring device and method based on a time domain reflectometry. The device comprises a measuring part used for obtaining measuring data; the time domain reflection measurement part is used for reflecting the characteristic impedance distribution condition along the line based on the measurement data; the upper computer is used for displaying the distribution condition; wherein the measuring part is connected with the time domain reflection measuring part through a coaxial cable, and the time domain reflection measuring part is connected with the upper computer through a universal interface bus. Human body pressure distribution measurement based on a time domain reflection method is adopted, a flexible transmission line is used as a measurement sensor, and the defects of sensor matrix measurement are overcome.

Cable connection point detection circuit and device

The invention discloses a cable connection point detection circuit and device. A voltage dividing module, a comparison module, a first display module and a second display module are arranged in a detection circuit, and the voltage dividing module sends a reference voltage signal to the comparison module according to a first power supply and sends a first voltage signal to the comparison module according to the resistance value of a cable connection point; the comparison module compares the reference voltage signal with the first voltage signal, outputs negative voltage when the resistance value of the cable connection point is smaller than a preset value, and outputs positive voltage when the resistance value of the cable connection point is larger than the preset value; the first display module is conducted when receiving the positive voltage and sends out a first indication signal to indicate that the cable connection point is in a disconnected state; and the second display module is ...

Cold-pressed ball using process capable of improving iron smelting recovery rate

The invention provides a cold-pressed pellet using process for improving the iron smelting recovery rate. The cold-pressed pellet using process comprises the steps that firstly, metal oxide, a reducing agent, a desulfurizing agent and a binding agent are fully mixed to be made into pellets; secondly, the pellets are added into reduction equipment according to the first batch to be directly reduced, and when the total thickness of a high material layer reaches the first height, the third step is executed; then the pellets are continuously added into reduction equipment in batches for direct reduction; wherein the batch of each batch is the second batch so as to restrain splashing; when the total thickness of the high material layer reaches the second height, executing the step 4; then the pellets are continuously added into the reduction equipment for direct reduction according to the third batch; and finally, after reduction of all pellets is completed, directly feeding the directly reduced ...

Method for dissolving and processing ceiba bamboo hemp fibre by employing ionic liquid

The invention relates to a method of dissolving and processing wood, cotton, bamboo and hemp fiber by using ion liquid, comprising a first step: uniformly mixing the crushed wood, cotton, bamboo, hemp and the ion liquid, dissolving and deaerating the mixture for 1 to 120 hours at 35 to 160 DEG C to form a homogeneous and stable spinning solution, wherein, the weight proportion of the wood, cotton, bamboo, or hemp is 1% to 96%; a second step: spinning and bath curing after filter and deaerating; a third step: pulling, rinsing, and bleaching, then oiling and drying to obtain a composite fiber. The dissolving and processing method is characterized in that the productivity of the ion liquid is high, the ion liquid is easy to recovery and meet the requirement of green production, the composite fiber has good mechanical strength and mechanical property, fabric made by the composite fiber has good hygroscopicity, nice air permeability, soft hand feeling, good drapability, easy colorizing, cool ...

Preparation method of human homologous tendon

The invention relates to a preparation method of human homologous tendon, which belongs to the technical field of biomedical materials. The invention mainly solves the technical problems of immunological rejection, bacterial infection, virus infection, complicated operation steps, and the like in the traditional method for transplanting homologous tendon. The preparation method of human homologous tendon comprises the following steps of: (1) cleaning the human homologous tendon; (2) freezing the cleaned human homologous tendon for 30-90 days; (3) trimming loose connective tissues surrounding the tendon; (4) immersing the trimmed tendon material in a mixed solution of peroxyacetic acid, ethanol and water, standing still for inactivation of viruses; (5) cleaning the inactivated tendon with water until the content of the peroxyacetic acid in the cleaning solution reaches a certain value for the last time; (6) trimming the tendon again, dripping the water on the surface of the tendon, vacuumizing ...

Production process of hollow blended polyether sulphone fiber dialysis membrane

The production method of new-type blended polyether sulphone hollow fiber dialysis membrane is characterized by that it uses polyether sulphone as main membrane-making material and uses other high polymers to make blending so as to obtain the invented hollow fibre dialysis membrane which possesses high strnegth, high compressive resistance, high disinfection resistance and good biological intermiscibility, and can change its property in large range, so that it can be suitable for the requirements of various dialyzation and superfilters.

Mixing-ultra filtering method treating system for cotton size black fluid

The process includes the step of adding flocculating agent in the black liquor of cotton pulp, after the flocculence settled down, the filtrate is ultrafiltrated polyethersulfone 2-5 times to entrap solid substances, the thin phase is reused directly. In said invention, only a little amount of cheap flocculating agent is added, the whole process can be proceeded under normal temp. and pressure, there is no other energy consumption except the power consumption of circulating pump. The COD removing rate of the processed black liquor is 50.87-80.98%, the alkali recovery rate is larger than 85%.

Novel paediatrics thermometer

The utility model relates to a novel paediatrics thermometer, including fixed establishment and thermometer, its characterized in that: fixed establishment include flexible casing and two clamping pieces of hollow structure, clamping piece one side is equipped with the telescopic link and through the both sides sliding connection of telescopic link with flexible casing, clamping piece outside edge is equipped with decorates the piece, is equipped with at least one fixed pipe that is used for the fixed temperature meter on the clamping piece, the beneficial effects of the utility model are that: can carry out effectual measurement to child's body temperature, fixed mode is firm, has avoided the phenomenon of generating temperature meter landing, has alleviateed child medical personnel's work burden.

Method for preparing dye wood chromocor and daidizein from meadow clover isoflavone

The invention relates to a method for preparing genistein and daidzein by using red clover isoflavone, which belongs to the field of chemical synthesis technique. Red clover isoflavone formononetin and biochanin-a extract are served as raw materials and subjected to one-step chemical modification: the red clover isoflavone formononetin is converted into the daidzein, and the red clover isoflavone biochanin-a is converted into the genistein simultaneously and respectively; then, the products of the daidzein and the genistein are prepared after extraction, purification and separation are carried out. The preparation method of the invention has the advantages of simple and easy operation, over 96 percent of conversion rate and using the red clover which is renewable biological resource as raw materials, without occupying food resources and quality land; the red clover has high isoflavone content, thereby reducing the production cost for preparing the genistein and the daidzein.

Preparation method of artificial blood vessel and its application

The invention relates to a method for preparing an artificial vessel and the application thereof. The preparation method comprises the following steps: (1) in the preparation of membrane liquid, polymer that is 7 to 30 percent by weight proportion is added into organic solvent the weight proportion of which is 70 to 93 percent, so that casting solution is obtained through swelling and solution under the temperature between 40 DEG C and 80 DEG C; (2) in the preparation of the artificial vessel, a hollow fibre membrane is formed through the filtration and deaeration of the membrane liquid, serosity is squeezed out from a spinneret composed of two concentric tubes, the serosity which enters into precipitating bath through dry spinning then is processed through a post treatment process to obtain the artificial vessel. The method includes the application that the artificial vessel is transplanted to a physical organ or any organs which need quantities of vascular tissues to transport aliment ...

Mixing-ultra filtering method treating system for cotton size black fluid

The process includes the step of adding flocculating agent in the black liquor of cotton pulp, after the flocculence settled down, the filtrate is ultrafiltrated polyethersulfone 2-5 times to entrap solid substances, the thin phase is reused directly. In said invention, only a little amount of cheap flocculating agent is added, the whole process can be proceeded under normal temp. and pressure, there is no other energy consumption except the power consumption of circulating pump. The COD removing rate of the processed black liquor is 50.87-80.98%, the alkali recovery rate is larger than 85%.

Solvent preparation cellulose blending fibre and use thereof

The invention relates to a method of preparing a cellulose-blended fibre by using the solvent method and the application. The method has the following steps: firstly, the comminuted high-low-polymerization-mixed cellulose, hemp and polyacrylonitrile are well mixed with an ironic liquid, dissolved at a temperature of 25 to 160 DEG C, deaerated for 1 to 120 hours and a homogeneous and stable spinning solution with a total solid content of 3 to 40 percent is formed, wherein, the mixed mass ratio of the cellulose, hemp and polyacrylonitrile is 5-99.5 to 0-5 to 0.5-95; secondly, the spinning solution is filtered, deaerated, spinned and solidified through a coagulation bath; and thirdly, a cellulose-blended fibre is obtained after the procedures of stretching, water cleaning, bleaching, oiling and drying. The application is that: the spinning stock solution composed of cellulose, hemp and polyacrylonitrile can be made into hollow fibre membranes, which are used for making artificial organs and ...

Method for producing antiviral regenerated cellulose fibre by using solvent method

The invention relates to a method for preparing antibacterial regenerated cellulose fiber by solvent method, which comprises the following steps: (1) mixing mechanically crushed cellulose with antibacterial medicine at a weight ratio of (2 to 200):1, adding into ionic liquid under mechanically stirring, and dissolving at 60 to 130 DEG C for 1 to 80 h to form a uniform spinning solution; and (2) filtering the spinning solution, defoaming, spinning, solidifying in coagulating bath, stretching, washing with water, and adding oil to obtain the target product, i.e. cellulose fiber. The cellulose fiber obtained by the invention has the advantages of high resistance to various kinds of bacteria and high mechanical strength, and can be widely used in the field of textile products with antibacterial and antivirus functions such as medical mask, protective clothing and bedcover for wards.

Method for dissolving and processing wood/cotton bamboo hemp fibre by employing ionic liquid

The invention relates to a dissolving and processing method for wood, cotton, bamboo and hemp fiber with ionic liquid, which is characterized in that: (1) the pulverized wood or the pulverized cotton, the pulverized bamboo and the pulverized bast pulp are uniformly mixed with the ionic liquid; the spinning solution of the total solid content of 3 to 40% is formed through dissolving and deaerating for 1 to 120 hours at 35 to 160 degrees centigrade; wherein the weight ratio of the wood or the cotton, the bamboo and the bast is 30 to 80% : 7 to 60% : 10 to 60% ; (2) the spinning and the concreting bathing solidification are carried out after being filtered and deaerated; (3) the oiling and the drying process are carried out after being pulled, rinsed and bleached, so as to obtain a composite fiber. The dissolving and processing method for wood, cotton, bamboo and hemp fiber with ionic liquid has the advantages that: due to use the ionic liquid, the productivity is high, the recovery is easy ...

Palladium nanometer single-crystal material with special three-pointed star morphology and preparation method thereof

The invention belongs to the technical field of inorganic materials and specifically relates to a palladium nanometer single-crystal material with special three-pointed star morphology and a preparation method thereof. The palladium nanometer material is prepared through temperature programmed one-step synthesis with acetylacetone as a metal palladium source, benzyl alcohol as a reducing agent and solvent and polyvinylpyrrolidone (PVP) as a stabilizing agent. The synthesized palladium nanometer material has special three-pointed star morphology and a single-crystal structure, and a great amount of steps are arranged at three-pointed star side surfaces; the palladium nanometer material has good electro-catalytic performance and application prospects in the field of catalysis.

Method for identifying betula fluviatilis and betula Fujiangensis interspecific hybridization F1 hybrid by using SSR (Simple Sequence Repeat) molecular marker

The invention provides a method for identifying betula fluviatilis and birch Fujian interspecific hybridization F1 hybrids by using SSR molecular markers, and relates to the technical field of biology. The invention relates to a method for identifying Betula fluviatilis and Betula Fujiangensis interspecific hybridization F1 hybrids by using SSR (simple sequence repeat) molecular markers, which comprises the following steps: carrying out PCR (polymerase chain reaction) amplification on Betula fluviatilis interspecific hybridization F1 generation hybrid DNA (deoxyribonucleic acid) by using an SSR marking technology, detecting an amplification product by using capillary electrophoresis, and determining the authenticity of the F1 hybrids by combining bands and plant morphology. The SSR marker primer provided by the invention is good in repeatability and strong in specificity; the method disclosed by the invention has the advantages of high efficiency, low cost, short period, early screening ...

Solvent preparation of cellulose fiber releasing anion and use thereof

The invention relates to a method of preparing a cellulose fibre releasing anions by using the solvent method and the application. The method has the following steps: firstly, the comminuted cellulose, tourmaline powder and addition agent are well mixed with an ironic liquid, dissolved at a temperature of 35 to 160 DEG C, deaerated for 1 to 120 hours and a homogeneous and stable spinning solution with a total solid content of 3 to 30 percent is formed, wherein, the mixed mass ratio of the tourmaline powder is 0.01 to 20 percent and the added mass ratio of the addition agent is 0 to 10 percent; secondly, the spinning solution is filtered, deaerated, spinned and solidified through a coagulation bath; and thirdly, a composite fibre of cellulose and tourmaline powder is obtained after the procedures of stretching, water cleaning, bleaching, oiling and drying. The composite fibre has the functions of releasing anions, generating far infrared radiation, generating biocurrent and suppressing bacteria ...

蒽醌法制备双氧水工艺中蒽醌加氢催化剂及其制备方法

The invention discloses a novel catalyst and process of preparation for anthraquinone hydrogenation in hydrogen dioxide solution preparation, wherein the catalyst comprises nickel, boron, metallic additive M and carrying agent S, the specific surface is 200-1200 m2g-1, the active specific surface is 0.1-50 m2g-1. The catalyst preparing process comprises the steps of charging surface activator in the nickel-boron alloy preparation, producing mixture of mesopore or micropore molecular sieve and nickel-boron alloy, the conventional immersion or reducing agent immersion method can be employed to load the nickel-boron alloy onto the common carrying agent or mesopore and microporous molecular sieve.

Solvent preparation cellulose bamboo charcoal fibre and use thereof

The invention relates to a method of preparing a cellulose bamboo charcoal fibre by using the solvent method and the application. The method has the following steps: firstly, the comminuted cellulose, bamboo charcoal powder and addition agent are well mixed with an ironic liquid, dissolved at a temperature of 35 to 160 DEG C, deaerated for 1 to 120 hours and a homogeneous and stable spinning solution with a total solid content of 3 to 30 percent is formed. The mixed mass ratio of the bamboo charcoal powder is 0.01 to 20 percent and the added mass ratio of the addition agent is 0 to 10 percent; secondly, the spinning solution is filtered, deaerated, spinned and solidified through a coagulation bath; and thirdly, a blended composite fibre of cellulose and bamboo charcoal, which is applicable to the fields of garments, ornaments and medical textiles, is obtained after the procedures of stretching, water cleaning, bleaching, oiling and drying. The ironic liquid used in the invention is of high ...

Low-cost refining and smelting method for high-quality carbon structural steel

The invention provides a low-cost refining and smelting method for high-quality carbon structural steel, which comprises the following steps: carrying out KR desulfurization, carrying out oxygen blowing and heating in a converter, and ensuring that the final temperature control target of the converter needs to be greater than 1645 DEG C; and the molten steel in the converter is tapped into a steel ladle, the steel ladle is subjected to pre-slagging in the converter tapping process so as to accelerate subsequent refining slagging, non-electrified refining deoxidation slagging and refining of floating inclusions in the later period, and the molten steel is tapped from the bottom of the steel ladle and is subjected to continuous casting pouring. The method does not need to be electrified for heating, so that the refining and smelting cost is effectively reduced, and the overall smelting time is shortened.

Method for preparing dye wood chromocor and daidizein from meadow clover isoflavone

The invention relates to a method for preparing genistein and daidzein by using red clover isoflavone, which belongs to the field of chemical synthesis technique. Red clover isoflavone formononetin and biochanin-a extract are served as raw materials and subjected to one-step chemical modification: the red clover isoflavone formononetin is converted into the daidzein, and the red clover isoflavonebiochanin-a is converted into the genistein simultaneously and respectively; then, the products of the daidzein and the genistein are prepared after extraction, purification and separation are carried out. The preparation method of the invention has the advantages of simple and easy operation, over 96 percent of conversion rate and using the red clover which is renewable biological resource as raw materials, without occupying food resources and quality land; the red clover has high isoflavone content, thereby reducing the production cost for preparing the genistein and the daidzein.

Short peptide modified polylysine-polylactic copolymer nano particle and its preparation method and use

The invention belongs to nanometer technology field. A short peptide modified nanometer of polylysine-poly lactic acid copolymer is disclosed. The nanometer particle comprises medicine and nanometer particle carrier of polylysine-poly lactic acid copolymer modified by arginyl-glycyl-aspartyl sequence short peptide. The nanometer carrier material can be used as organic drug, water soluble drug or water insoluble drug. The preparation process is simple and is suitable for mass production especially for preparing the targeted tumor resistant drug.

Preparation process of egg embryo liquid

An egg embryo liquid as nutritive food is prepared through such steps as fertilized eggs of fowls being physiologically incubated in constant-temp. machine for a certain time, extracting tissue liquid from embryo, quantitative packing, sealing and sterilization and features easy suction by human body, so especially suiting for weak and sanile persons.

Core-shell structure zeolite multilevel ordered mesopore and micropore composite material and preparation method thereof

The invention belongs to the field of media-micro-hole composite materials techniques. In particular, the invention relates to a shell-core structured zeolite multi-layered media-micro-hole compositematerial and method for preparing same. The material is a regular polyhedron in appearance and has shell-core structure. The polyhedron shell is of single-crystal structure and the core is piled up bynano-crystals, and the material also has the inherent micro-holes of the zeolite molecular screen and the media-holes produced by piling up of the nano-crystal. Therefore, the material has the media-micro-hole two hole-channels compound holes structure. The invention uses NaSiO3 as the silica source, the metal Al extracted from Ni/Al alloy by the NaSiO3 as the aluminum source and athylamine and the residue Raney Ni of Ni/Al alloy extraction as the auxiliary. The material is obtained by crystallizing the zeolite synthesizing solution in the regular crystallization condition and the shell thickness ...

Creep compression clamp

The utility model provides a creep compression clamp. Commutator, the commutator comprises an upper pressing block and a lower pressing block. The bottom surface of the upper pressing block and the top surface of the lower pressing block are respectively provided with triangular-prism-shaped upper and lower positioning holes for the tail end of a sample to extend into, the side walls of the upperand lower pressing blocks are respectively provided with upper and lower fastening holes penetrating from the outside to the upper and lower positioning holes corresponding to the upper and lower positioning holes, and the upper and lower fastening holes are internally provided with propping parts propping against the sample along the transverse direction. According to the utility model, the parallelism of the sample and the center of the compression clamp in the installation process is optimized, the centering property of the sample in the compression process is ensured, the difference of left ...

Method of discriminating key points in macroporous resin separation and purification process of traditional Chinese medicines

The invention provides a method of discriminating key points in macroporous resin separation and purification process of traditional Chinese medicines. Rapid quantification of active ingredient contents during the process of macroporous resin adsorption and elution is realized by establishing the quantitative model of soup active ingredient contents and near infrared spectroscopy during the process of macroporous resin adsorption and elution of traditional Chinese medicines and applying it to the content prediction of samples to be measured. Rapid judgement of leak point and endpoint in adsorption process and start point and endpoint in elution process is also realized, thereby enabling the operations to be more reasonable during macroporous resin separation and purification process. The method has the advantages of simple operation, accurate results and fast analysis. Rapid judgement of key points in macroporous resin separation and purification process of traditional Chinese medicines ...

A creep compression clamp assembly

The utility model provides a creep compression clamp assembly. Sample and commutator, the commutator comprises an upper pressing block and a lower pressing block. The bottom surface of the upper pressing block and the top surface of the lower pressing block are respectively provided with triangular-prism-shaped upper and lower positioning holes for the tail end of a sample to extend into, the sidewalls of the upper and lower pressing blocks are respectively provided with upper and lower fastening holes penetrating from the outside to the upper and lower positioning holes corresponding to theupper and lower positioning holes, and the upper and lower fastening holes are internally provided with propping parts propping against the sample along the transverse direction. According to the utility model, the parallelism of the sample and the center of the compression clamp in the installation process is optimized, the centering property of the sample in the compression process is ensured, the ...

Preparation and application of cellulose mixed fibre using ion liquid as solvent

The present invention relates to a method for preparing cellulose polyblend fiber by using ionic liquid as solvent and its application method. Said preparation method includes the following steps: (1), uniformly mixing pulverized cellulose, chitin/chitosan and ionic liquid, dissolving them for 1-80 h at 25-160 deg.C so as to obtain the uniform stable spinning solution whose total solid content is 3-40%; (2), filtering and defoaming, then making the spinning solution be passed through single-hole or multi-hole spinneret, and fed into a coagulating bath and solidified, its spinning speed is 5-150 m/min; and (3), plasticizing, drawing, washing, bleaching, oiling and drying so as to obtain the invented cellulose polyblend fiber product. The spinning solution prepared by aid invention also can be used for preparing hollow fiber membrane, specially, can be used for making artificial organ and membrane for water purifier.

Method and device for monitoring change condition of seroperitoneum

The invention discloses a method and a device for monitoring the change condition of seroperitoneum. The device comprises an upper computer, a vector network analyzer, a radio frequency switch matrix and a measurement sensor, the upper computer is used for sending signals to the radio frequency switch matrix and the vector network analyzer; the vector network analyzer is used for acquiring the insertion loss of a transmission line in the measurement sensor; the radio frequency switch matrix is used for measuring switching of loops; the measuring sensor is used for contacting with a human body to measure seroperitoneum; a broadband scattering parameter measurement method is adopted, a flexible uniform transmission line is used as a measurement sensor, a human body is used as a transmission line reference conductor, and the change condition of the seroperitoneum is represented by measuring port scattering parameters of the transmission line, so that the condition of the seroperitoneum of ...

Silicone defoaming agent for papermaking and pulping and preparation method thereof

The invention provides a silicone defomaing agent for papermaking and pulping and a preparation method thereof, which belong to the papermaking chemicals, and mainly comprise silicon grease mixture, silicon oil mixture, emulsifier, thickener and water. In the defoaming agent emulsion, silicon grease mixture and silicon oil mixture account for 70 to 90 percent of the active matter content, wherein total active matter content accounts for 5 to 30 percent of total content of emulsion, and the rest medium is water. The anti-foaming performance is improved through the silicon grease mixture, the defoaming performance is improved through the silicon oil mixture, the viscosity of the silicon grease is reduced by adding the emulsifier, and the emulsion effect is improved. The silicone defoaming agent has novel formula composition and good defoaming and anti-foaming performance, and has excellent performance in the papermaking pulping work procedure and partial water systems.

Emulsion antifoaming agent for making paper and preparation method thereof

The invention provides an emulsion antifoaming agent for making paper and a preparation method thereof and belongs to paper-making chemicals. The emulsion antifoaming agent mainly comprises higher fatty alcohol having 12 to 36 carbon atoms, fatty acid ester, polyether, mineral oil, an emulsifying agent, a thickening agent, a disinfectant and water. A process for preparing the antifoaming agent comprises the following steps of: premixing and fusing an antifoaming active substance and the emulsifying agent; after the temperature of a system rises to a certain extent, adding water into the mixture at one time; homogenizing the mixture for a certain period of time under the action of high shear; and after the mixture is cooled to normal temperature, adding the thickening agent, the disinfectant and a preservative to obtain the antifoaming agent. The emulsion antifoaming agent has the advantages of simple and convenient production process, readily available raw materials, good antifoaming and ...

Preparation and application of bamboo pulp fibre using ion liquid as solvent

The present invention relates to a method for preparing bamboo pulp fiber by using ionic liquid as solvent and its application. Its preparation method includes the following steps: (1), uniformly mixing the pulverized bamboo pulp and ionic liquid, dissolving for 1-80 h at 35-160 deg.C so as to obtain the uniform stable spinning solution whose total solid content is 3-40%; (2), filtering and defoaming, then making the spinning solution be passed through multi-hole spinneret and fed into a coagulating bath and solidified, its spinning speed is 5-150 m/min; and (3), plasticizing, drawing, washing, bleaching, oiling and drying so as to obtain the bamboo pulp fiber product. The spinning solution prepared by said invention also can be used for preparing hollow fiber membrane, specially, can be used for making artificial organ and membrane for water purifier.

Basket is placed to other stool pot of portable bed

The utility model provides a basket is placed to other stool pot of portable bed, including rectangle basket and stores pylon, the rectangle framework is grating net basket structure, the hook structure who closes is hung for being used for with the rectangle framework to the one end of stores pylon, the U type structure of closing is hung for being used for with the bedside guardrail to its other end, the stores pylon sets up through hook structure the upper portion of rectangle framework rear side. The utility model discloses simple structure, low cost are firmly durable. Can place on arbitrary one side bed fence according to patient custom, articles for use such as urinal and toilet paper are placed in the rectangle frame internally, can adjust the distance at will, place suitable position, make things convenient for patient to take by oneself, have improved patient's the ability of taking care of oneself greatly, also can be used to patient and leave hospital the recovered phase of ...

New material for ascites ultrafiltering, concentrating and back-infusing device and producing method

The present invention relates to the field of artificial organ technology. The new material for ascites ultrafiltering, concentrating and back infusing device is hollow crossblended polyethersulfone fiber film. The new material features good biological compatibility, high physical and chemical stability, concentration times as high as 7, protein cutoff over 88 %, and protein back infusing amount each time of 40-60 g. The present invention makes it possible to back infuse protein to body, to avoid the denaturalization of protein and to raise the treatment effect, especially the treatment safety.

Detection method of glutathione

The invention belongs to the technical field of biology, and particularly relates to a glutathione detection method which comprises the following steps: mixing a dopamine hydrochloride solution with a NaOH solution to obtain a polydopamine nanoparticle solution; the method comprises the following steps: mixing target replacement DNA which can be adsorbed on polydopamine and can be desorbed by glutathione, an obtained polydopamine nanoparticle solution, a solution containing Zn < 2 + > and a buffer solution, and incubating at room temperature to obtain a PDANs-Zn < 2 + >-target replacement DNA polymer; adding a sample into the obtained PDANs-Zn < 2 + >-target substitution DNA polymer, incubating at room temperature, centrifuging, and taking supernatant to obtain a target substitution DNA chain; carrying out RCA reaction on the obtained target substitution DNA in a reaction system; and adding a fluorescent dye into the obtained amplification product, incubating and then carrying out fluorescence ...

Production for cellulosic composite fiber emitting negative ion and application thereof

The invention relates to preparation and application of a cellulose/ inorganic breeze compound fiber that releases negative ions. The preparation: (1) ground cellulose, inorganic breeze, an assistant are evenly mixed with ionic liquid, dissolved and defoamed at 35-160 DEG C for 1-120 hours, thus forming even and stable spinning solution with the total solid content of 3-30 percent, wherein, the mass mixture ratio of the inorganic breeze is 0.01-20 percent and the added mass of the assistant is 0-10 percent; (2) the mixture is carried out by spinning and curing of solidifying bath after being filtered and defoamed; (3) the cellulose/ inorganic breeze compound fiber is obtained by stretching, water washing, blanching and the procedures of oiling and drying. The compound fiber not only has the function of releasing negative ions, but also has the functions of producing far-infrared radiation, generating biocurrent and inhibiting bacteria, etc., thus being applicable to the fields of costume ...

Multi-stage ordered arranged ZSM-5 nano rod bundle and preparation method thereof

The present invention belongs to the technical field of chemical engineering and relates, in particular, to a hierarchically arrayed ZSM-5 nano-rod bundle material and also to a preparing process thereof. The material has a bundle structure in large size; the rod bundle is very ordered in shape and consists of a plurality of flat strip-shaped ZSM-5 nano-rods arranged and piled in order along the c axis ([001]direction) thereof and thereby forms a hierarchically ordered structure. The material is prepared with hydrothermal one-step synthesis, which, more specifically, comprises crystallization of zeolite synthesizing solution under routine crystallizing conditions with water glass as the silicon source, with the porous metallic Raney Ni obtained after metallic aluminum extraction of nickel-aluminum alloy by sodium hydrate solution as the structure inductor and with ethylamine as micro-porous templates.

Method for dissolving and processing wood-hemp composite fiber by ionic liquid

The invention relates to a method for dissolving and manufacturing wood-hemp composite fiber by adopting ionic liquid, which comprises the following steps: (1) homogeneously mixing the comminuted wood pulp and hemp with the ionic liquid, dissolving at the temperature of 160 DGE C, de-aerating for 1-120h, forming spinning solution whose total solid content is 3-30%, wherein the mass ratio of the wood and hemp is 1%-99% : 99%-1%, (2) spinning, solidifying by the solidifying bath after filtering and de-aerating, (3) obtaining the composite fiber after stretching, water washing, bleaching, and processes of oiling and drying. The method adopts ionic liquid to prepare fiber, which is highly efficiency and green environmental protection, the prepared fiber has good mechanical strength, and fabric which is prepared by using the fiber has the advantages of good hygroscopic property, strong air permeability, soft feel, good drapability, easy tintage and cool feel.

Composite active carbon fiber with polyvinyl membrane coating on surface and production thereof

Hollow cellulous dialyzing and ultra filtrating membrane of cross blend polyethersulfone, its manufacturing method and usage

The invention concerns the technique field of high numerator material film, which offers a new kind of a high thin film, producing way and its use. The way of the invention use the ether as the main material, mixing other high ju things. This film has high strength, disinfection, can change the function in the large field, so as to meet every need of dialysis and super filter equipment.

Homogeneous bone for treating open fracture and preparation method thereof

Insulation and voltage resistance testing device for pre-embedded cable harness

The embodiment of the invention provides an insulation and voltage resistance testing device for a pre-embedded cable harness, and relates to the technical field of cable wire testing, and the device comprises a wiring unit which is used for connecting a plurality of to-be-tested pre-embedded cable harnesses; the switching unit is connected with the wiring unit and is used for switching the plurality of to-be-tested pre-embedded cable harnesses to the voltage withstanding test unit and/or the insulation test unit; the voltage withstanding test unit is connected with the switching unit and is used for testing the voltage withstanding performance of a plurality of pre-embedded cable harnesses to be tested; and the insulation test unit is connected with the switching unit and is used for testing insulation resistance values of the plurality of to-be-tested pre-embedded cable harnesses. The device is operated on a test tool table, rapid and convenient testing of insulation and voltage resistance ...

Method for dissolving and processing regenerated hemp fibre by employing ionic liquid

The invention relates to a dissolving and processing method for regenerated hemp fiber with ionic liquid, which is characterized in that: (1) the pulverized bast is uniformly mixed with the ionic liquid; thus the spinning solution of the total solid content of 3 to 30% is formed through dissolving and deaerating for 1 to 120 hours at 35 to 160 degrees centigrade; (2) the spinning and the concreting bathing solidification are carried out after being filtered and deaerated; (3) the oiling and the drying process are carried out after being pulled, rinsed and bleached, so as to obtain a composite fiber. The dissolving and processing method for regenerated hemp fiber with ionic liquid has the advantages that: due to use the ionic liquid to prepare the fiber, the efficiency is high and the green environmental protection is realized; the prepared fiber has good mechanical strength; and the fabric prepared by using the fiber has good moisture absorption performance, strong air permeability, soft ...

Material of artificial kidney for hemodialysis and its preparing process

A new material for the artificial kidney for hemodialysis is disclosed, which is a hollow fibre membrane of mixed polyether-sulfone. Its advantages include high biocompatibility, physiochemical stability and selective separability. Its preparing process is also disclosed.

Smart home system suitable for disabled people to live

The invention relates to a smart home system, in particular to a smart home system suitable for disabled people to live, which is divided into three subsystems, namely a home automation subsystem, a health monitoring subsystem and a home security subsystem, and corresponding functions are realized by adopting sensors, motors and the like. The main function of the home automation subsystem is that four control modes including timing control, SU03T voice control, photoresistor control and manual key control are adopted to control opening and closing of a curtain, and an STC89C51 single chip microcomputer is adopted as an MUC of the home automation subsystem. The health detection subsystem is mainly used for collecting parameters such as indoor temperature, humidity, pressure and smoke concentration and sending the parameters to the mobile phone APP smart cloud in real time through an ESP8266 Bluetooth module, and sensors adopted by the health detection subsystem include MQ2, MQ7, MQ135, DHT11 ...