46results about How to "Short validity period" patented technology

The present invention provides a flexible gel particle and a flexible gel particle plugging agent prepared from the same. The raw materials for preparing the gel particle comprise, by weight, 6-12wt% of acrylamide, 3-12wt% of temperature tolerant monomer, 5-15wt% of alkali and salt resistant monomer, 0.2-1wt% of partially hydrolyzed polyacrylamide with high and middle molecular weight, 0.02-0.08wt% of an initiator, 0.04-0.1wt% of a crosslinking agent, 0.01-0.1wt% of a retarder, 1-8wt% if a plasticizer and the balance of water. The temperature tolerant monomer includes Si-O bond monomer; the alkali and salt resistant monomer includes acrylate monomer; and the partially hydrolyzed polyacrylamide with high and middle molecular weight has number-average molecular weight of 8-16 million. The flexible gel particle is prepared into a suspension with certain concentration by water or polyacrylamide solution, so as to prepare the flexible gel particle plugging agent. The flexible gel particle plugging agent provided by the invention has the advantages of environment-friendliness, low cost, little pollution to the stratum, no toxicity, and simple preparation process.

The invention discloses a reverse typing colloidal gold kit for ABO blood groups and a preparation method thereof. The reverse typing colloidal gold kit for the ABO blood groups comprises a reacting plate, erythrocyte membrane antigen gold particles and a basic solution, wherein 3N reaction holes are formed in the reacting plate and are respectively used for placing A erythrocyte membrane antigen gold particles and a basic solution, B erythrocyte membrane antigen gold particles and a basic solution, and O erythrocyte membrane antigen gold particles and a basic solution; the reaction holes are of circular structures, the bottoms of the holes are smooth and U-shaped; and sealing covers are arranged on the reaction holes. The kit also can be a dry kit; and the erythrocyte membrane antigen gold particles and the basic solution are dried on the reaction holes. According to the reverse typing colloidal gold kit for the ABO blood groups and the preparation method, erythrocyte membrane blood group antigen extracts are prepared and then marked with the colloid gold, and thereby the problem that the fresh erythrocyte just can be stored in a short period can be solved. The kit has the shelf life not less than 12 months at 2 to 20 DEG C, and has the advantages of being high in sensitivity, convenient to use, and relatively low in cost, and identifying the results easily.

The present invention discloses an application of ginseng total saponin or monomer saponin Rb1 as vaccine immunologic adjuvant. The ginseng total saponin or monomer saponin Rb1 and aluminium hydroxide are mixed and used as vaccine immunologic adjuvant, and as compared with traditional aluminium hydroxide adjuvant said invention possesses the following advantages: (1) its side effect is less; (2) said vaccine can be stored under the condition of frozen low-temp. and it can prolong effective period of vaccine; (3) its method is simple and convenient, its quality is easy to be controlled; and (4) it can induce body to produce higher humoral immunity response.

The invention aims to industrially produce ginkgolide B liposome medicinal composition injection and ginkgolide B liposome medicinal composition oral preparations through uniform formula, process and equipment by a molecule dispersing method. The invention provides a molar ratio formula of the component raw materials for preparing the ginkgolide B liposome medicinal composition, steps and method for preparing ginkgolide B liposome medicinal composition freeze-dried injection and oral preparations, and embodiments for preparation. The ginkgolide B liposome medicinal composition is used for treating cerebral and vascular diseases.

According to the invention, a liposome combination drug injection and an oral liposome combination drug preparation can be produced in a large industrialization manner through a molecular dispersion method with a unified formula, a unified process and unified equipment. The invention provides a formula of raw components for preparing liposome combination drugs in a molar ratio, provides freeze-drying injection and oral preparation processes for the prepared liposome combination drugs, and also provides twenty embodiments for preparing the liposome combination drugs, such as an anti-gastric-ulcer liposome combination drug, antibacterial and antifungal liposome combination drugs, an anti-tumor liposome combination drug, an anti-virus liposome combination drug, an anti-emetic liposome combination drug, a nutritional supplement liposome combination drug and hypoglycemic agent and cardiovascular medicine liposome combination drugs.

The invention provides water quality monitoring equipment and a monitoring system based on a micro-fluidic disc chip, the water quality monitoring equipment comprises a shell, the micro-fluidic disc chip and a digestion unit, a centrifugal center point is arranged in the micro-fluidic disc chip, and a digestion pool, a quantitative pool, a reaction pool, a B reagent preset pool and a C reagent preset pool are fixedly mounted in the micro-fluidic disc chip; and a liquid bag reagent TP-B and a liquid bag reagent TP-C. The water quality monitoring equipment and the monitoring system based on the micro-fluidic disc chip are reasonable in design, and can realize micro-fluidization of water quality detection, integrated automation of multi-step reaction, integration of high-temperature closed digestion and presetting and storage of reagents; therefore, the developed laboratory and the portable micro-volume low-power-consumption micro-fluidic chip water quality detection system have the outstanding advantages of small volume, extremely low reagent consumption and waste liquid consumption, extremely low power consumption, short reaction period and the like, and can lead the development direction of rapid standardization water quality instruments in the laboratory.

The invention discloses a preparation method and application of a tilapia source streptococcus agalactiae recombinant GroEL protein vaccine. The recombinant GroEL protein vaccine is prepared by tilapia source streptococcus agalactiae recombinant GroEL protein. An amino acid sequence of the tilapia source streptococcus agalactiae recombinant GroEL protein is as shown in SEQ ID NO.2. In the invention, tilapia source streptococcus agalactiae is taken as a research object, a GroEL gene is obtained from a tilapia source streptococcus agalactiae genome by cloning, the cloned GroEL gene is connected with a pET28a(+) carrier to construct an expression vector, and the vector is subjected to prokaryotic expression and purification in E.coli BL21(DE3) to obtain the recombinant GroEL protein vaccine with strong specificity and an immune protective efficacy of 68.61+/-7.39 percent, so that a foundation is laid for immune prevention and treatment of a tilapia streptococcus agalactiae disease.

The invention discloses a dust inhibitor based on the cultivation of Bacillus Pasteurella and a use method thereof, which comprises the following raw materials in weight percentage: 9.00% to 11.00% of Bacillus Pasteurella bacterial liquid (the bacterial concentration is 1.0×10 ⁸ ~1.3×10 ⁸ cell/mL), 4.20%~4.40% CO(NH ₂ ) ₂ , 7.90% ~ 8.05% CaCl ₂ and the remainder of the water. The method of using the dust suppressant is: first put CaCl ₂ and CO(NH ₂ ) ₂ Dissolve in water according to the above weight percentage, then add the corresponding percentage of Bacillus pasteurian bacteria solution, mix quickly and evenly, and then spray on the road surface and the surface of the stockpile; treat 1m ² For municipal roads, the required dosage is 1~3L; treatment of 1m ² For stockpile, the required dosage is 3-6L, and the number of spraying is 1-3 times according to the effect. The present invention utilizes the principles of bonding, covering, biodegradation and biocalcification to effectively improve the effect of dust suppression, and has the advantages of fast response, long duration of action, antifreeze and temperature resistance, reduction of secondary dust, and environmental protection.

The invention is characterized in that uniform formula, process and equipment are used for industrial production of pefloxacin mesilate liposome medicine composition in the forms of injection and oral preparation by using a molecular dispersion method. The invention provides the mole ratio of the components in a formula of the pefloxacin mesilate liposome medicine composition. The invention also provides steps, methods and specific embodiments for preparing the pefloxacin mesilate liposome medicine composition in the forms of lyophilized injection and oral preparation. The pefloxacin mesilate liposome medicine composition can be used for resisting bacteria.

The invention discloses a bromine corrosion prevention painting, which comprises the following parts: 48-55% dimethylbenzene, 45-50% 120# petrol, 6-8% DOP, 5-6% petrol resin, 6-10% butyl rubber and fitful dye. The preparing method comprises the following steps: putting dimethylbenzene and 120# petrol in the autoclave; blending 20min to mix evenly; adding DOP, petrol resin and butyl rubber; modifying with the speed at 2400-3000r/min for 2h; adding dye to stir at 3600-4000r/min; cutting at high speed to obtain the product with fineness at 60um; displaying aging-proof property and strong adhesion force.

Disclosed is a method for administering functional Centrex characteristics which are made available to Centrex users (A, B, C) in a first communication network (1) of a Centrex client by a Centrex service provider on a network element (11) of a second, packet-oriented communication network (2), a transmission channel (3) establishing a connection between the Centrex users (A, B, C) and the network element (11). The inventive method is characterized in that the Centrex client obtains a user authorization from the Centrex service provider for an allotment of functional Centrex characteristics while a digital certificate containing an attribute with a Centrex profile in which an association between functional Centrex characteristics and a Centrex user is defined is issued to at least one Centrex user by a Centrex client's certification authority, and at least one functional Centrex characteristic is isolated in the network element in accordance with the certificate previously transmitted to the network element by the Centrex user via the transmission channel.

The invention provides a horizontal well re-fracturing method for a tight oil reservoir. The horizontal well re-fracturing method for the tight oil reservoir comprises the steps that active water is injected into a fractured interval by using a tubing passage according to the liquid producing amount of a horizontal well; according to the liquid producing amount and the length of a well section ofthe horizontal well, fracturing fluid and fracturing fluid containing a proppant are alternately injected into the fractured interval by using a casing passage; and a wellhead is closed, when the wellhead pressure drops less than a preset value within the preset duration range, blowout and flowback are carried out. According to the horizontal well re-fracturing method, the oil production increasing effect is significantly improved.

The invention relates to termite-resistant concrete and a preparation method thereof. The termite-resistant concrete is obtained by doping concrete with chlorpyrifos microcapsules which can be used for preventing and controlling termites. The preparation method specifically includes the steps that (1) a sufficient amount of cement is weighed, an appropriate proportion of the chlorpyrifos microcapsules is added, and the mixture is stirred until the mixture is uniformly dispersed; (2) a sufficient amount of coarse aggregate and a sufficient amount of fine aggregate are weighed and stirred uniformly; (3) the cement doped with the chlorpyrifos microcapsules is added into the mixed aggregate and stirred uniformly; (4) a corresponding mass of water and a corresponding mass of a water reducing agent are weighed, mixed and stirred uniformly and then added into the mixture above; (5) the concrete mixture is loaded into a test mold and subjected to inserted tamping or vibrated tamping until bleeding on the surface; (6) the concrete paste overflowing on the test mold is scraped off, and the test mold is placed for 24 hours; (7) after the mold is removed, a sample is cured for 28 days. The preparation method of the termite-resistant concrete is simple in process, practical and economical, the termites can be effectively prevented and controlled, the engineering problem that the termites destroy concrete structures is solved, and the concrete has an important practical engineering application value.

In summer, diseases of cucumbers are very liable to induced due to the hot and humid weather; and for prevention and treatment, a common method is spraying a pesticide, but the cucumbers need to be picked every day once the fruiting period starts; what is more, it is unable to separate the fruits from the plants during spraying the pesticide, so that it certainly causes high pesticide residue on the cucumbers on market. The invention provides a pollution-free medicament for prevention and treatment of powdery mildew of the cucumbers and aims to the powdery mildew of the cucumbers during picking period. In 100 kg of water, 0.5-2 kg of wood vinegar and 0.1-0.5 kg of 4% agricultural antibiotic 120 are added to prepare a diluent, which is then used for spraying application on infected cucumber plants comprehensively. The medicament can rapidly treat the diseases of the cucumbers without residue of any harmful substances, thereby satisfying production demands on standards of green foods and organic foods.

The invention provides a Wright-Giemsa staining reagent and an application method thereof. According to a technical scheme in the invention, the staining reagent is characterized in the aspect of a preparation method; the preparation method is simple and convenient and can be implemented in a short time; and the obtained staining reagent has long service life in a specific preservation environment. On such a basis, a method for staining a biomaterial smear with the staining reagent is novelly designed; and the method comprises the following steps: staining the smear with 0.25 mL of the staining reagent for 30 s, then dropwise adding 1 mL of a phosphate buffer, maintaining the staining reagent in the phosphate buffer for 20 min, carrying out washing with water and then carrying out drying in the air so as to complete staining. The staining reagent of the invention is simple to prepare, short in staining time, excellent in effect, capable of realizing easy identification of various cells, and mainly applicable to staining detection of specimen smears of bone marrow fluid cells, peripheral blood cells, hydrothorax and ascite cells, cerebrospinal fluid cells and the like.

The invention discloses an enzyme substrate determination agent for coliform in water and a preparation method thereof. The enzyme substrate determination agent for coliform in water comprises the following components in parts by weight: 8 to 10 parts of a PH regulator; 9.4 to 10 parts of an indicator; 5.62 to 8.14 parts of an inhibitor; and 3.5 to 5.8 parts of a production agent. The production agent consists of 0.5 to 0.8 part of a TBS buffer and 3 to 5 parts of soybean lecithin. The determination agent can carry out microbial detection on coliform in water, improve detection efficiency andimprove detection sensitivity at the same time.

The invention relates to the field of pool coatings, and particularly discloses a monatomic algae removal and sterilization pool coating and a preparation method thereof. The monatomic algae removal and sterilization pool coating comprises the following raw materials in percentage by weight: 20-30% of deionized water, 2.0-3.0% of a dispersing agent, 0.2-1.0% of a defoaming agent, 1.5-2.5% of propylene glycol, 20-35% of a filler, 1.0-2.0% of a thickening agent, 1.0-3.0% of a coalescing agent, 35-45% of superfine styrene-acrylic emulsion, 0.1-0.5% of a pH regulator and 1.0-8.0% of a monatomic algae removal bactericide. The preparation method comprises the steps: firstly, adding the deionized water, adding the dispersing agent, defoaming agent, propylene glycol, filler and monatomic algae removal bactericide while stirring, stirring, grinding, sequentially adding the thickener, deionized water, coalescing agent, superfine styrene-acrylic emulsion, defoaming agent and pH regulator, and stirring to obtain the finished product. The coating is applied to a pool coating, and has the advantages of algae removal, algae prevention, antibiosis, disinfection and lasting purification.

The high-temperature and high-humidity weather in the facility greenhouse can easily induce various diseases and insect pests of strawberries. The conventional control method is to spray pesticides. Since strawberry is a berry fruit, the peel is extremely thin, which inevitably results in high pesticide residues when strawberries are on the market. The invention provides a pollution-free medicament for preventing and treating gray mold of strawberry. For the gray mold of strawberry harvesting period, 0.5-2 kg of wood vinegar and 0.1-0.3 kg of ginkgo extract or imitated ginkgo extract are added to 100 kg of water. The ratio is prepared into a diluted solution, and then sprayed on the infected strawberry plants in an all-round way, which can quickly kill the strawberry plant diseases without causing any harmful substance residue, and meets the production needs of green food and organic food standards.

The invention discloses graphene modified thermochromic plastic. The graphene modified thermochromic plastic is prepared from, by mass, 60-90 parts of plastic particles, 2-5 parts of surface-treated graphene, 6-13 parts of thermochromic pigment, 0.1-3 parts of a crosslinking agent, 0.1-2 parts of an initiator, 0-0.9 part of a stabilizing agent and 0-2 parts of a plasticizer, wherein graphene and asurface treatment agent are jetted to a reaction chamber by using a jet spreading method at the same time to prepare the surface-treated graphene. The graphene prepared by using the jet spreading technology is high in dispersibility, high in particle size uniformity and capable of improving the heat conductivity of the thermochromic plastic, so that the thermochromic sensitivity is improved, andthe shock-resisting strength and the weather resistance of the thermochromic plastic are effectively improved.