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1164 results about "Absorbent cotton" patented technology
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Low shrinkage anti-cracking C60 grade self-compacting bridge tower concrete based on internal curing, shrinkage compensating and toughening, and preparation method thereof
The present invention discloses a low shrinkage anti-cracking C60 grade self-compacting bridge tower concrete based on internal curing, shrinkage compensating and toughening, wherein the low shrinkage anti-cracking C60 grade self-compacting bridge tower concrete is prepared from the following raw materials: cement, fly ash, mine powder, an expander, an AN-ICA internal curing agent, crushed stone, river sand, polyacrylonitrile fibers, micro-scale modified degreasing cotton cellulose, a cement slurry microstructure regulation agent, water and an ultra-dispersed water-reducing and shrinkage-reducing superplastic admixture. According to the present invention, the initial slump is more than or equal to 230 mm, the expansion degree is more than or equal to 630 mm, the 28 d compressive strength is more than or equal to 70 MPa, the 28 d splitting tensile strength is more than or equal to 5.8 MPa, the toughness index I5 is more than or equal to 3.0, the 28 d self-shrinkage is less than 100*10<-6>, the 28 d dry shrinkage rate is less than 150*10<-6>, the carbonization grade achieves T-IV, the anti-cracking grade achieves L-V, the product has characteristics of excellent mechanical property, excellent cracking resistance and excellent durability, and the difficult problems of high cement and cementing material material consumption, large shrinkage and easy cracking of the bridge tower concrete at the current stage can be solved.
Owner:WUHAN UNIV OF TECH +2
Nickel-chromium alloy metallographic corrosion solution and corrosion method
InactiveCN104513985AGrain contrast is obviousFast corrosionPreparing sample for investigationAcetic acidAlcohol
The invention relates to a nickel-chromium alloy metallographic corrosion solution and a corrosion method. The corrosion solution is a mixed solution of concentrated nitric acid, concentrated hydrochloric acid, glacial acetic acid and water in a volume ratio of 1:1:1:1. The concrete steps include: (1) preparing the corrosion solution, firstly adding water into a container, then adding concentrated nitric acid, concentrated hydrochloric acid and glacial acetic acid respectively, conducting stirring and then performing standing for 10-20min; (2) dripping the corrosion solution on the corrosion surface of a ground and polished nickel-chromium alloy metallographic sample, immersing the sample into the corrosion solution to a depth of 1-2mm, and controlling the corrosion time at 10s-10min; (3) flushing the sample surface with distilled water for more than 2min; and (4) flushing the sample surface with alcohol, and then wiping the sample surface with alcohol-carrying absorbent cotton. According to the invention, the corroded metallographic sample has obvious grain contrast and clear grain boundary line, and at the same time, the defects of under-corrosion and over-corrosion can be avoided. The corrosion solution can rapidly and efficiently corrode the metallographic structure of the sample.
Owner:JINCHUAN GROUP LIMITED
Preparation method of nano-cellulose aerogel
The invention discloses a preparation method of nano-cellulose aerogel and relates to the preparation method of the nano-cellulose aerogel. The preparation method aims at solving the problem of poor dispersion of the existing cellulose aerogel in an organic solvent. The preparation method comprises the following steps: 1) dissolving absorbent cotton in a sulfuric acid solution for acidolysis, centrifugalizing, and then washing a white sol precipitate with deionized water to be neutral; 2) adding the nano-cellulose sol precipitate into the organic solvent, uniformly stirring, and then placing into an ultrasonic cleaning instrument for ultrasonic dispersion; and 3) placing a nano-cellulose suspension at the temperature of minus 18-minus 25 DEG C for freezing, and then further placing into a freeze-drying machine for freeze-drying. The nano-cellulose aerogel prepared by the invention has obvious nano-microfibril and nano-porous structure and can be rapidly dispersed in the organic solvent, such as dimethylformamide, dimethylacetamide and the like, the particle size of dispersed cellulose is nano-scale, and the good dispersion is shown. The preparation method disclosed by the invention can be applied to catalyst carriers, adsorbents and other fields.
Owner:NORTHEAST FORESTRY UNIVERSITY +1
High titanium-bearing heavy slag C50 self-compacting weakly expansive concrete-filled steel tube and preparation method thereof
ActiveCN105060793AImprove cementing performanceFull hydration activitySolid waste managementCelluloseCompensation effect
The invention discloses a high titanium-bearing heavy slag C50 self-compacting weakly expansive concrete-filled steel tube, and belongs to the field of building materials. The concrete-filled steel tube is prepared from the following raw materials: cement, coal ash, composite expanding agent, macadam, high titanium-bearing heavy slag, a tackifying plasticity-maintaining super-dispersing additive, micron-sized modified absorbent cotton cellulose and water. The prepared concrete-filled steel tube has the characteristics of high flow state, low gas content, large strength extra coefficient and stable expansibility; the problem of poor working performance caused by application of high titanium-bearing heavy slag to concrete is solved; due to the water absorption and water releasing effect of the porous structure, the internal maintenance effect on the concrete-filled steel tube can be realized, the shrinkage compensation effect of the expanding agent on the concrete-filled steel tube is improved, the concrete-filled steel tube is weakly expansive to be suitable for jacking pouring of upper chord pipes and lower chord pipes of a concrete-filled steel tube arched bridge and a concrete-filled steel tube truss bridge, as well as high-casting pouring of a concrete-filled steel tube pier column. Therefore, the problem of disengaging caused by poor-density pouring of the concrete-filled steel tube is solved effectively.
Owner:SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
Field complete pollution level detection method for running composite insulator
InactiveCN102053043ASolve the difficulty of accurate measurementSimple methodWeighing by removing componentWithdrawing sample devicesComposite insulatorsWater insoluble
The invention relates to a field complete pollution level detection method for a running composite insulator. The method is simple; and by combining an inorganic solvent and an organic solvent and sampling twice, the surface of the insulator can be cleaned, and the measurement accuracy is ensured. The method comprises the following steps of: (1) scrubbing pollutants to a polluted liquid storage from the upper and lower surfaces of the insulator by adopting distilled water or deionized water, and then measuring the equivalent salt density of the insulator; (2) filtering the polluted liquid in the step 1, drying, weighing, and calculating washing ash density; (3) scrubbing insoluble and water-insoluble substances to the polluted liquid storage from the upper and lower surfaces of the washed insulator by adopting alcohol and using absorbent cotton, filtering the polluted liquid, drying, weighing, and calculating the alcohol cleaning ash density of the surface of the insulator; and (4) adding the washing ash density and the alcohol cleaning ash density to obtain complete ash density of the surface of the insulator.
Owner:SHANDONG ELECTRIC POWER RES INST
Trauma nursing device
ActiveCN106730301AImprove protectionSimple and convenient medicationAdhesive dressingsMedical applicatorsDressing changeInjury mouth
The invention discloses a trauma nursing device. The trauma nursing device comprises a shell, an isolation board is arranged on the lower portion of the shell, an absorbent cotton holder is arranged above the isolation board and is filled with absorbent cotton, the left side face of the shell is provided with an opening allowing the absorbent cotton holder to insert into, and a ventilation opening is formed in the right side of the shell. The trauma nursing device has the advantages that the drawing-type absorbent cotton holder is used for holding the absorbent cotton, and medical personnel can only need to draw out the absorbent cotton without uncovering the device during dressing change so as to avoid exposing a wound to air; easily caused laceration of the just healed wound when medical proof fabric and gauze are torn off in every dressing change process is avoided, and inconvenience caused by binding up the wound through gauze traditionally is overcome; a rubber air sac is used for spraying liquid medicine on the absorbent cotton, and accordingly simplicity and convenience in dressing are achieved; the trauma nursing device is provided with a plunger barrel which can be used for providing a negative-pressure environment, removing fester from the festered wound is facilitated; the trauma nursing device is convenient to use and capable of protecting the wound more comprehensively, so that pain of patients is relieved greatly, and working difficulty of medical personnel is lowered.
Owner:赵金花
Egg laying device of cnaphalocrocis medinalis guenee and use method thereof
InactiveCN101796939AMaterials are readily availableEasy to operateAnimal husbandryCnaphalocrocis medinalisFilter paper
The invention relates to an egg laying device of cnaphalocrocis medinalis guenee and a use method. The device comprises a 500-2000ml glass container, wherein the container is provided with a bottom and an opening; a grid-shaped plastic pad is arranged at the bottom of the container and is covered by filter paper; an absorbent cotton ball dipped with 10% of hydromel is hung in a beaker; the container contains water which does not immerse the plastic pad; and two layers of gauzes for sealing the opening of the container are arranged at the opening of the container. The device is simple in production, low in cost and easy to operate and has the advantages of prolonging the lives of cnaphalocrocis medinalis guenee adults, ensuring large egg number per female, improving the egg collecting efficiency, etc.
Owner:ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
Absorbent reusable clothing and undergarments
Absorbent, launderable garments and undergarments for incontinent or other persons likely to discharge fluids from time to time are supplied in many styles and capacities. All include a shaped absorbent pouch assembly, having an inner conformable and permeable layer in contact with the skin and an absorbent cotton layer sealed under a gas-permeable yet waterproof and stretchable textile. The pouch is positioned by a set of elastic strips or sheet elastic fabric; each set being visually similar to a style of regular underwear. A preferred waterproofing treatment uses an emulsion of fluoroalkyl acrylate permeated into a knitted or woven textile. In higher capacity versions the entire garment is waterproofed.
Owner:RSD HLDG
LED candle lamp having humidifying and flavoring function
InactiveUS20150338087A1Simple structureLow costMechanical apparatusPoint-like light sourceControl systemWater storage tank
An LED candle lamp having the humidifying and flavoring function comprising a shell, a light emitting device mounted on the shell, a control system and a power supply unit, wherein the shell is provided inside with a humidifying device that includes a water storage tank, a sealing cover, an atomizing sheet and water absorbent cotton, the water storage tank and the sealing cover forming a sealed water storage space by being screwed together, the sealing cover being provided with an accommodating chamber provided inside with the atomizing sheet, the sealing cover being provided with a mist outlet exposed to the shell, the water storage tank being fixedly provided inside with the water absorbent cotton, wherein the control system may be a PCB control panel provided with an elastic contact conductive wire.
Owner:FANG JIAN
Sampling apparatus and method for detecting formaldehyde content of engines tail gas
InactiveCN101042314ASimple structureEasy to operateComponent separationWithdrawing sample devicesVacuum pumpingTime range
This invention relates to one motor tail gas test sampling method and device, wherein, the device comprises one probe, gas-in constant structure, tail absorptive derive structure and sample gas flow control structure. The invention method comprises the following steps: a, making absorptive liquid; b, injecting it into two series U shape multi-hole board; c, loading proper absorbent cotton into dry tube; d, adjusting the structure temperature as 80+-2deg.C; e, starting micro vacuum pump between 0.12L / min-0.15L / min; f, vacuum pumping for 5 minutes; g, starting continual sampling with time range of 10min-15min; H, after sampling pouring the liquid into one contain bottle to get the sample liquid.
Owner:TIANJIN UNIV
Method for separating and assaying organic acid and fatty acid substances in saliva
ActiveCN105954454AMethod is feasibleThe pre-processing process is simpleComponent separationSaliva sampleGas chromatography–mass spectrometry
The invention relates to a method for separating and assaying organic acid and fatty acid substances in saliva, belongs to the technical field of analytical chemistry and particularly relates to the method dedicated to separating and assaying the organic acid and fatty acid substances in the saliva. The method comprises the steps of collecting a saliva sample by adopting absorbent cotton, then, putting the absorbent cotton into a needle cylinder of a syringe, carrying out pushing squeezing by using a push rod of the syringe so as to obtain the saliva sample, carrying out high-speed centrifugation, then, extracting supernatant, then, carrying out salting-out extraction, a methyl esterification reaction and solvent extraction separation sequentially, then, concentrating an extract until the extract is approximately dry, then, carrying out redissolving, carrying out filtrating by a microporous filtrating membrane, assaying the organic acid and fatty acid substances in the saliva by adopting a gas chromatography-mass spectrometry method by using filtrate, making a standard curve, and carrying out quantification by an external standard method. The method provided by the invention can be effectively used for assaying the organic acid and fatty acid substances in the saliva, is feasible, accurate and reliable, is low in detection limit and good in accuracy and has popularization and application values.
Owner:CHINA TOBACCO YUNNAN IND
Method for cultivating cymbidium goeringii seed by tissue culture
InactiveCN1799336AAvoid spendingAvoid damageSeed and root treatmentHorticulture methodsLuminous intensityAlcohol
The invention relates to a method of seedling with tissue culturing by using spring orchid seed, comprising the following steps: taking the capsule of not broke up from spring orchid as explant; immersing with alcohol or wiping it with absorbent cotton dipped with alcohol, cutting up the capsule to fetch out the pulverulent seed, loading it into sheeting bag, immersing it in the alcohol, putting it in the NaOH solution with concentration being 0.08-0.12mol / l for 8-10 minutes, putting it into sodium hypochlorite solution of 10.5í‚2% for 6-8 minutes; sowing the treated seeds on the culturing medium for seed germination, lighting 14-16 hours fir every day, with the luminous intensity being 1000-1500lux, temperature 23í‚2 Deg C, culturing for 160-180 days, and growing out original bulb; transferring the original bulb to the culturing medium for seed germination the same with mentioned above for successive transfer culture, for 50-60 days, and growing out new sprout or original bulb, cutting the original bulb continuously for successive transfer culture and reaching the geometric extension. The invention employs method of tissue culturing by using spring orchid seed, to breed species of high quality and to choose orchid plant from seed seedling.
Owner:江苏春辉生态农林股份有限公司
Method for quickly identifying resistance to banded sclerotial blight in rice seedling stage
ActiveCN102084806AMorbidity guaranteedQuick filterFungiHorticulture methodsNormal growthCulture mediums
The invention discloses a method for quickly identifying resistance to banded sclerotial blight in rice seedling stage, comprising the following steps: activating and culturing the strain of rhizoctonia solani so as to obtain mycelium; overgrowing the mycelium on strip medical absorbent cottons through a culture medium so as to form absorbent cottons with bacteria and good moisturizing performance; soaking seeds of the rice variety (series) to be identified to accelerate germination at the temperate of 30 DEG C after disinfecting, and then seeding in the soil inside the box body, and culturing for 3-4 leaf ages; intertwining the straw base of the seedling with the strip absorbent cotton with rhizoctorzia solani, then covering a plastic cover (taken off 24 hours later) on the seedlings, and carrying out normal growth management of the seedlings; and identifying the resistance to banded sclerotial blight in the rice seedling stage according to seedling-straw ratio 5-7 days after inoculation.
Owner:HUAWEI TEHCHNOLOGIES CO LTD
Antibacterial cotton cloth and preparation method
InactiveCN101392454AGuaranteed permeabilityGood combination fastnessVegetal fibresLiquid/gas/vapor textile treatmentCelluloseCotton gauze
Owner:LOGISTICS UNIV OF CAPF
Elastic facial mask cloth
InactiveCN101643974AThe shape of the mask does not changeNo change in shapePackaging toiletriesPackaging cosmeticsEngineeringAbsorbent cotton
The invention relates to an elastic facial mask cloth, which is manufactured by adopting a spunlaced nonwovens processing technique by a direct web formation method. The elastic facial mask cloth is characterized by containing composite ultrafine chopped fiber, absorbent cotton and bamboo fiber. (First), the composite ultrafine chopped fiber is split into 16 or more than 16 fine denier fibers withtiny diameters from the original one fiber part after being punctured at a high pressure by a spunlace processing technique, the fine diner fibers are adhered to each other, and after the spunlance high-pressure puncturing, the fibers are woven with the fibers and the fine denier fibers in a three-dimensional and staggered mode to form a three-dimensional netlike structure of a tight structure. Afacial mask manufactured by soaking the facial mask cloth in hygroscopic water and facial make-up liquid by a spunlace process of the direct web formation method has an unchanged shape. The facial mask of the same model can be suitable for people of different facial forms after being stretched; and the elastic facial mask cloth also has a certain elastic recoverability and strong comfortable pasting feeling, tightens and relaxes along with a face, generates tightening feeling to the face, and enhances the continuous infiltration and absorption of the facial make-up liquid.
Owner:NOX BELLCOW COSMETICS CO LTD
Simple nucleic acid purifying method
The invention discloses a simple nucleic acid simplifying method which comprises processes of cracking, adsorption promotion, washing and elution. The method is characterized by comprising preparation methods and use methods of a simple purifying column, cracking liquid, adsorption promoting liquid and washing liquid special for nucleic acid purification, wherein the simple purifying column is a 1.5 ml centrifuge tube with a hole on the bottom; a small mass of absorbent cotton is compacted on the tube bottom; 0.3-1.0 g of glass powder with diameter of 120-130 mum is added as a purifying column body; an uncovered 2.0 ml centrifuge tube is sleeved outside the column body to serve as a collection tube, therefore, the collection tube is easily manufactured by using a common EP (Eppendorf) tube, cotton and glass powder. With a wide application range, the method is directly applied to the extraction and purification of genome DNA, plasmid DNA and total RNA, as well as the recycling, centrifugation and purification of PCR (polymerase chain reaction) products; the operation steps are concise and easy to master, and the requirements on the experiment operation technique are not high; moreover, the method has the advantages of high purification purity, high integrity, short purification time and low experiment cost; and as toxic substances such as phenol and chloroform are not used in the purification process, the method is environmentally friendly and energy-saving.
Owner:GUANGXI UNIV
Protective facial mask containing nano silver and chitosan and production method of protective facial mask
ActiveCN102144817AComfortable to wearEasy to prepareProtective garmentAbsorbent cottonAbsorbent cotton gauze
The invention discloses a protective facial mask containing nano silver and chitosan and a production method of the protective facial mask. The protective facial mask provided by the invention is composed of five gauze layers, wherein two of the five gauze layers are functional absorbent cotton gauzes containing the nano silver and the chitosan. The protective facial mask has the functions of antibiosis, eliminating unusual smell and absorbing dust, and can effectively prevent pathogenic bacteria or virus from invading into a human body through the oral cavity and the nasal cavity so as to prevent communicable diseases; and the protective facial mask is excellent in air permeability. The production method of the protective facial mask is simple, wide in material source and suitable for industrialized production.
Owner:INST OF BASIC MEDICAL SCI ACAD OF MILITARY MEDICAL SCI OF PLA
Pain relieving sterilized electronic plaster instrument for trauma
ActiveCN101427961AImprove conductivityGood paste performanceElectrotherapyAdhesive dressingsScar tissueElectric field
Owner:龙丹
Method for preparing mercapto cotton
The invention belongs to mechanical synthesis technology field, which is a method for producing mercapto cotton. The character lies in: it uses sulfo-glycollic acid, tetrahydrofuran and concentrated sulfuric acid as reaction reagent, the volume proportion of each kind of reagent is: sulfo-glycollic acid: tetrahydrofuran: concentrated sulfuric acid= 1:1:0.002, the quantity of reaction reagent and absorbent cotton is: adds in 15 g absorbent cotton into 100ml reaction liquid. They are placed for 45-50 hours under temperature of 38-40 degrees, uses G1 filter crucible to filter the reaction liquid in mercapto cotton, and uses evaporated water to clean it to neutrality, and then filter out the water, adds in absolute ethyl alcohol to absorb the residual water. The invention uses more less reaction reagent, the content of mercapto is high, and the mechanical intensity is good.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
IoT (Internet of Things) based automatic sorting and recovery equipment for medical waste
ActiveCN108213044AReal-time grasp of sorting statusIngenious structural designSolid waste disposalMetal deviceSurveillance camera
The invention discloses IoT (Internet of Things) based automatic sorting and recovery equipment for medical waste. The equipment comprises a medical waste collecting bucket conveying system, a medicalwaste stepped sorting system, a medical waste collecting bucket cleaning and recovery system and an IoT monitoring system, wherein the medical waste collecting bucket conveying system comprises a medical waste collecting bucket, a medical waste collecting bucket clamp seat, a metal conveying belt and an anti-falling synchronous stop lever; the medical waste stepped sorting system comprises a vibrating screen group, an air separation system, a crushing system and a water separation system; the medical waste collecting bucket cleaning and recovery system comprises a sprinkling system, a disinfection system, a drying system and an output system; the IoT monitoring system comprises multiple groups of monitoring cameras. With adoption of the equipment, plastic products, glass products, gauze,absorbent cotton and various sharp metal devices can be automatically sorted and recovered from waste, the sharp metal devices are smashed and recovered, the medical waste collecting bucket is cleanedand disinfected, and the sorting state of the sorting equipment is conveniently mastered by a worker in real time on the basis of the IoT.
Owner:ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Wheat sharp eyespot resistance seedling identification method
InactiveCN101348825AEliminate differences in pathogenicityImprove utilization efficiencyMicrobiological testing/measurementPlant genotype modificationDiseaseAgricultural science
The invention relates to a method for identifying a resistance seedling stage against wheat banded sclerotial blight. The method comprises the following steps that Rhizactonia cerealis undergoes activated cultivation to obtain hypha; the hypha grows over a toothpick through a culture medium so as to form a nonsterile toothpick; seeds of to-be-identified wheat variety or strain sprout inside a culture dish at a temperature of 25 DEG C, and then are sown inside a 20cm nutrition pot; the nonsterile toothpick is embedded in a wheat seedling stalk and a leaf sheath 30 days after the seeds are sown, and an inoculation position is wound with soaked medical absorbent cotton tampon and is covered with a double-layer shading net; inoculated seedling is kept at a relative humidity and near 100 percent saturation for 48 hours by means of a mist sprayer, and then the shading net is removed; the seedling undergoes normal growth management, and water spray is carried out once a day; and grade identification of banded sclerotial blight disease for individual wheat material is carried out 30 days after inoculation; and finally, disease index is calculated according to disease evaluation grade.
Owner:JIANGSU ACAD OF AGRI SCI
Antibacterial gauze or bandage and preparation method thereof
InactiveCN105012999AImprove antibacterial propertiesAdhesive dressingsAlginate artificial filamentsFiberCopper alginate
The invention discloses antibacterial gauze or bandage and its preparation method. The antibacterial gauze or bandage is prepared by blending of 80-99 wt% of medical absorbent cotton and 1-20 wt% of copper alginate fiber. The prepared gauze or bandage has good biosecurity and high antibacterial rate, is broad-spectrum antibacterial and environmentally friendly, has good compliance and is low-cost. In addition, antibacterial rate of the gauze or bandage is greater than 99%.
Owner:厦门百美特生物材料科技有限公司
Sterile opening method and device of medical ampoule bottle
InactiveCN106946203ANo pollution in the processReduce generationOpening closed containersBottle/container closureAutomatic controlPharmacy medicine
The invention discloses a sterile opening method and device of a medical ampoule bottle. The device is composed of a sealing box body, a clamping and rotating mechanism, a sawing mechanism, a cleaning and disinfecting mechanism, a chip removing mechanism, a breakoff mechanism, a waste collecting mechanism and an electric control system. By means of reasonable depth and length sawing, liquid gas disinfecting and outward-pulling breakoff on the ampoule bottle, negative pressure lower than the pressure in the ampoule bottle is generated outside the ampoule bottle, and fewest glass chips are generated by the ampoule bottle in the breakoff process, and the glass chips directionally flow towards the outer portion of the ampoule bottle to be collected by the chip removing mechanism and cannot fall into the ampoule bottle. After breakoff of the ampoule bottle is finished, the ampoule bottle is inflated with sterile nitrogen, medicines are free of pollution, and a broken-off bottle head is automatically recycled. According to the sterile opening method and device, the process of clamping, sawing, chip removing, cleaning, disinfecting, breakoff and gas inflation is automatically completed, manual operation is not needed, and operation damage is avoided; liquid gas spraying disinfecting is carried out, and pollution of scrubbing absorbent cotton residues on medicines is avoided. Full-automatic control, safety, reliability and environment protection are achieved.
Owner:郇晶晶
Method for modifying medical cotton gauze
InactiveCN101892586AFully maintain the gapImprove adsorption capacityPhysical treatmentDry-cleaning apparatus for textilesHigh concentrationFreeze-drying
The invention relates to a physical-chemical method for modifying ordinary medical degreased cotton gauze, which aims to improve the adsorption property and antibacterial property of the medical cotton gauze. The method mainly comprises the following technical steps of: degreasing the cotton gauze; swelling the degreased cotton gauze with high-concentration caustic soda; washing the swollen cotton gauze with hot water; neutralizing the washed cotton gauze with an acid; washing the neutralized cotton gauze with cold water; performing antibiotic finish on the washed cotton gauze with a pomegranate rind extract serving as a natural antibacterial agent; refrigerating the treated cotton gauze at a low temperature; and performing freeze drying on the refrigerated product. After loose cotton fiber is swollen by concentrated caustic soda solution (mass percent concentration is between 20 and 28 percent), gaps in the fiber are increased and enlarged, and tight macromolecules become loose, so that antibacterial active ingredients in the pomegranate rind extract which is safe, nontoxic and low-cost can be adsorbed on the cotton fiber, and the antibacterial property of the cotton gauze is improved. Drying is performed by freeze drying technology instead of the conventional drying or air drying, so that gaps formed in the swelling and refrigerating processes of the cotton fiber can be kept fully, and the adsorption property of the cotton fiber is improved.
Owner:JIANGNAN UNIV
High-toughness medical cotton swab capable of quickly stopping bleeding
InactiveCN106581729AAddress inherent flawsReduce manufacturing costAbsorbent padsBandagesWound healingFiber
The invention discloses a high-toughness medical cotton swab capable of quickly stopping bleeding. The cotton swab comprises a cotton bar and composite fiber cotton wrapping the end of the cotton bar. The reproducible and degradable composite polylactic acid fiber cotton is used for taking the place of a traditional absorbent cotton ball, production cost is reduced, inherent defects of absorbent cotton are overcome, the prepared composite fiber cotton has good toughness and strength, hydrophilia is effectively improved, and polydopamine-polyethylene glycol is grafted on the surface of the composite fiber cotton so that hydrophilia and biocompatibility of the fiber can be further improved; halloysite doped nanotubes, polydopamine, polyethylene glycol and other raw materials are used together, the cotton swab has the effects of quickly stopping bleeding, sucking liquid, promoting wound healing and the like, and additional application value of the cotton swab is improved.
Owner:阜阳市汇康医疗器械有限公司
High-sensitivity netted graphene/elastomer strain sensor and preparation method thereof
ActiveCN107504893AGuaranteed to workQuick responseGrapheneElectrical/magnetic solid deformation measurementElastomerFiber
The present invention discloses a high-sensitivity netted graphene / elastomer strain sensor and a preparation method thereof. The method comprises: performing ultrasonic preparation of a graphene oxide dispersion liquid, taking an absorbent cotton plaster as a template, employing the vacuum extraction technology, tightly wrapping the graphene oxide on absorbent cotton fibers, employing the gradient temperature changing technology to prepare netted graphene, and performing compound solidification of the netted graphene and the elastomer emulsion to obtain a high-sensitivity netted graphene / elastomer strain sensor. The preparation method of high-sensitivity netted graphene / elastomer strain sensor is mild in condition, low in cost and high in repeatability, and the strain sensor has good deformation capability, is high in sensitivity, can induct tiny stress and can be used for a wearable electronic device.
Owner:NANJING UNIV OF SCI & TECH
Admixture for improving marine concrete impervious and anti-cracking performance
ActiveCN105669073AIncrease in sizeIncrease the probability of cross-linking fusionCelluloseWork Performances
The invention discloses an admixture for improving marine concrete impervious and anti-cracking performance. The admixture is prepared from an ammonium stearate emulsion, 3, 4, 9, 10-perylenetetracarboxylic acid anhydride (PAT), a nano-silica dispersion solution, an ultra-dispersed shrinkage-reducing type water reducer, micron-sized modified absorbent cotton cellulose and water in proportion. According to the invention, the ammonium stearate emulsion is employed to form a thin complex adsorptive layer of insoluble calcium soap in marine concrete capillary pores to block concrete capillary pores. And a PAT optimized pore structure is utilized to improve the impervious performance and work performance of marine concrete. The nano-silica dispersion solution is employed to enhance the mechanical properties of marine concrete. The ultra-dispersed shrinkage-reducing type water reducer is utilized to reduce concrete shrinkage and improve the work performance. The micron-sized modified absorbent cotton cellulose is utilized to enhance the anti-cracking performance of marine concrete. The admixture provided by the invention does not contain nitrite, chromate and the like, is chlorine-free and environment-friendly, and can greatly enhance the durability of concrete serving in a marine environment.
Owner:HAINAN RUIZE NEW BUILDING MATERIAL +1
Method for transforming genes by using efficient living body of chemical male sterilant
InactiveCN102212552AGuaranteed FertilityConvenient experimentMicrobiological testing/measurementVector-based foreign material introductionSucroseSaccharum
The invention relates to chemical male sterilization, pollen-tube pathway and pollen-mediated transformation technologies, and belongs to the technical field of molecular breeding and gene engineering. The method comprises the following steps of: performing chemical male sterilization treatment on a crop T0 of a budding stage; cutting stigmas of buds; mixing fertile pollen by using the pollen-tube pathway technology, namely using target gene-containing agrobacterium-mediated infection solution (added with 5 percent of sucrose and 500muL / L of SilwetL-77) with OD600 of 0.8; and dipping an absorbent cotton ball in the bacterial solution, coating the bacterial solution to the stigma cut ovaries, performing shading treatment for three days to realize normal growth, and finally collecting selfing seeds. Herbicide resistance screening is performed on the generation T1, polymerase chain reaction (PCR) detection is performed on resistant plants, and positive plants are determined. The method has the characteristics of low cost, simplicity in operation, no need of expensive instruments and equipment, high transformation rate (1 to 5 percent) and the like, is suitable for any flowering plant, and can be applied to large-scale crop genetic transformation.
Owner:SOUTHWEST UNIVERSITY
Method for preparing hemostatic sponge by use of sisal cellulose oxide
ActiveCN102634069ATo achieve the purpose of comprehensive utilization of sisal wasteAbsorbent padsBandagesCelluloseThiourea
The invention discloses a method for preparing hemostatic sponge by use of sisal cellulose oxide. The method comprises the following steps of: performing basic boiling of the sisal fiber waste by use of sodium hydroxide solution, washing to neutrality, and drying and crushing to obtain powder; adding the powder of the sisal fiber waste to the sodium periodate solution with adjusted pH, and stirring for reaction at constant temperature; after the reaction is over, adding ethylene glycol solution and continuing stirring; filtering, washing the filter cake with distilled water to neutrality, anddrying to obtain the sisal cellulose oxide; preparing the mixed solution of sodium hydroxide and thiourea; adding the prepared sisal cellulose oxide to the mixed solution for low-temperature dissolution; adding the pore-forming agent sodium sulfate, stirring uniformly and adding absorbent cotton; after low-temperature ageing, performing regeneration reaction in the coagulating bath formed by concentrated sulfuric acid and sodium sulfate; and washing clean with water to obtain the hemostatic sponge. According to the invention, the sisal cellulose oxide sponge is prepared by use of sisal fiber waste, and the obtained sisal cellulose oxide sponge has good antibacterial activity and can be used as hemostatic sponge.
Owner:桂林华诺威基因药业股份有限公司
Wheat bran medium for culturing fruit bat fly in laboratory
A wheat bran medium for culturing fruit bat fly in laboratory comprises 10g of wheat bran, 10 g of brown sugar, 1.2 g of agar, 1.2g of yeast and 0.15g of benzoic acid. A preparation method of the medium comprises steps of: dissolving the components in 100 ml of tap water and carrying out an autoclaving; taking glass test tube (25*200 mm) treated with dry heat sterilization (120 DEG C for 2h); subpackaging 20ml of medium into each test tube; cooling to a room temperature until the medium being solid gel; and putting fruit bat fly in the medium, wherein a test tube plug is absorbent cotton treated with dry heat sterilization. The easily prepared medium has low costs, good production effect and strong mildewing resistance, and is convenient for genetics and development biology researches on fruit bat fly.
Owner:许乐乐 +3
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