4039results about How to "Easy to degrade" patented technology

An endoprosthesis, in particular an intraluminal endoprosthesis such as a stent, comprises a carrier structure, which includes at least one component comprising a magnesium alloy of the following composition: Rare earth metals: between about 2.0 and about 5.0% by weight, with neodymium between about 1.5 and about 3.0% by weight Yttrium: between about 3.5% and about 4.5% by weight Zirconium: between about 0.3% and about 1.0% by weight Balance: between 0 and about 0.5% by weight wherein magnesium occupies the proportion by weight that remains to 100% by weight in the alloy.

The invention provides an mVSV virus vector, i.e., attenuated mVSV obtained after multiple modification mutations occur to an M protein amino acid site of a wild Indiana strain VSV, and an optimized heterologous antigen gene is preferentially integrated to a double cloning site area of an mVSV packaging core plasmid pmVSV-Core at the same time. The mVSV virus vector vaccine comprises a heterologous antigen gene which fuses or embeds a target virus between G and L genes of an mVSV vector envelope, wherein the antigen gene comprises an enveloped and embedded antigen gene encoding the target virus, an embedded combination antigen gene or a fused antigen gene; the mVSV virus vector is embedded or fused with a dominant antigen of spike protein S of an SARS-CoV-2 pathogen; the dominant antigen is preferably selected from a receptor binding domain of spike protein S, namely RBD; and a COVID-19 vaccine based on mVSV mediation is formed. The vaccine has good prevention or treatment effect on COVID-19 infected people.

The present invention relates to dialysis solutions for peritoneal dialysis, containing hydroxyethyl starch as the osmotically-active substance, electrolytes and, optionally, conventional additives, where the hydroxyethyl starch has a molecular weight Mw in the range from 10,000 to 150,000, a substitution MS in the range from 0.10 to 0.40, a substitution DS in the range from 0.09 to 0.35 and a substitution ratio C2 / C6>=8. With this peritoneal dialysis solution it is possible, with an outstanding ultrafiltration, to maintain a longer dwell time, for example the dialysis solution can be utilized for a period of 12 hours in the CAPD without replacement. In addition, the inventive dialysis solution is also particularly advantageous for patients with residual kidney function. The resorption of the osmotically active substance is clearly diminished and even after a dwell time of 12 hours it amounts to a maximum of 60-70%.

The invention relates to a composition for driving and killing mosquitoes. The composition is characterized by comprising the following substances by portions: 20 to 50 portions of natural essential oil, 10 to 35 portions of pyrethroid, 25 to 50 portions of solvent oil, 3 to 20 portions of surface active agent and 5 to 15 portions of antioxidant. The composition has the advantages of: (1) having no toxic side effect to body, having multiple action of driving mosquitoes, sterilizing and essence, being capable of reducing the cost of the product and bringing pleasant feeling to a user; (2) having different effective components with different action mechanism for target insects and also being capable of effectively retarding the drug resistance thereof; (3) having higher safety than chemosynthetic insecticide due to easy decomposition and low residue of the natural essential oil in natural environment; (4) having obvious control effect to mosquitoes, flies and cockroaches and being capable of effectively reducing the using amount of pyrethroid due to adding of the natural essential oil; and (5) having a certain action of restraining and killing various harmful bacterium such as golden staphylococcus aureus, shigella shigae and Pseudomonas aeruginosa due to adding of natural vegetable garlic oil.

A multifunctional scouring detergent with constituents (by weight percentage) of, mixed solvent 2-70, surface active agent 3-30, inorganic salt 0-10, water for the rest. The multifunctional cleaning agent can effectively remove the stains of chewing gum, scotch tape colloid residual and paint film coating.

Photoacid generator salts comprising photoactive cationic moieties and segmented, highly fluorinated-hydrocarbon anionic moieties are disclosed which provide high photoacid strength and can be tailored for solubility and polarity. The present invention further relates to photoacid generators as they are used in photoinitiated acid-catalyzed processes for uses such as photoresists for microlithography and photopolymerization.

The invention discloses composite hydrogel for adsorption of metal ions and a preparation method thereof. The hydrogel comprises, by weight, 5-95 parts of polyvinyl alcohol, 5-95 parts of chitosan, 0.1-20 parts of modified graphene oxide and 2-6 parts of sodium alginate, the weight ratio between the polyvinyl alcohol and the chitosan is (5: 95)-(95: 5), modified graphite oxide includes modified graphene oxide modified by dopamine and / or modified graphene oxide modified by ferroferric oxide, all components are uniformly mixed in a certain sequence, and the composite hydrogel is obtained under special conditions. The composite hydrogel for adsorption of the heavy metal ions and the preparation method thereof have the advantages that high speed, high efficiency, high adsorption capacity and high selectivity are achieved, the adsorption effect on the heavy metal ions is remarkable, meanwhile, the preparation process is simple, and the operability is high.

Disclosed is a cable identifying system for accurately discriminating one cable from another on site over a long period of time, the system enabling a cable layer or a cable user, when laying out an RFID built-in cable, to do without manually writing any information in the RFID tags built in the cable. One cable having RFID tags built therein can be accurately realized. The individual ID's of the RFID tags are read and stored in a storage apparatus. When a part of the cable is cut, the ID's of the RFID tags nearest to the both end of the cable are read out, and the ID-related data of the RFID tags in the cut-out cable are recorded on a desired medium or electronic information medium.

The invention provides an edible collagen food packaging film and a preparation method thereof. The preparation method comprises the following steps: firstly, stirring a 5-30wt% collagen solution and a 0.1-3wt% modifier solution at the temperature of 30-60 DEG C to react for 30-60 minutes, thus obtaining a compound solution; then adding a plasticizer and an auxiliary additive into the compound solution, then continuing to stir for 20-40 minutes at the temperature of 30-60 DEG C so as to obtain a mixed solution; and pouring the mixed solution in a die, molding, drying for 5-15 hours at the temperature of 40-80 DEG C, so as to obtain the edible collagen food packaging film. The edible collagen food packaging film has the advantages of better mechanical property, better heat stability, better moisture barrier property, safety, effectiveness and no side effect; wastes can be degraded and do not cause environment pollution; and the edible collagen food packaging film can be widely applied to the fields of various food packaging and medicament packaging, and has a good market application prospect.

Mutual prodrugs of glucosamine, and derivatives and analogs of glucosamine and an anti-inflammatory agent, compositions thereof, and methods for, e.g., treating disorders and conditions by administration of the compositions are provided. Topical compositions of glucosamine, and derivatives and analogs of glucosamine are also provided.

The invention relates to a preparation method and application of electrospinning nanofiber. The preparation method is as follows: synthetic and / or natural polymer materials are dissolved in a volatilesolvent under normal temperature and normal pressure, functional substances are added, and nanofibers are obtained by electrospinning; the functional substances comprise, but are not limited to an odor substance, an organic fluorescent compound, a pigment, a temperature sensitive luminescent and color changing material, a cell growth factor, a hemostatic substance, one or a plurality of nutrientsincluding hyaluronic acid, collagen, and the like which promote skin growth. The nanofiber made by electrospinning has the special effects of sterilization, aromatic odor, fluorescent luminescence, multiple colors, temperature sensitive luminescence and color-changing, promoting wound healing, promoting inhibition and interfering with body function, maintaining skin cell vitality and the like. The method can be used in air purification, automotive air purification, fresh air systems, medical, beauty care, and other nanofiber products.

The present invention aims at realizing a dispersion compensating method capable of readily conducting automatic compensation of waveform degradation caused by dispersion characteristics of an optical transmission path, and at providing a dispersion compensating apparatus and an optical transmission system, of a smaller size at a reduced cost. To this end, the dispersion compensating apparatus of the present invention comprises: a variable dispersion compensator for compensating for the dispersion of optical signal input via an optical transmission path; a bit error information monitoring circuit for generating bit error information of a received signal output from the variable dispersion compensator via an optical receiving circuit; and a controlling circuit for optimally controlling a wavelength dispersion value of the variable dispersion compensator based on the bit error information from the bit error information monitoring circuit.

The invention discloses a production method of hot stamping foil, which adopts six production process flows: release coating, protective layer coating, color layer coating, accurate aluminizing and curing glue layer coating. In the whole production process, water soluble glue, water soluble ink and water soluble gloss oil are used to realize the integrated production of the hot stamping foil, methacrylates and monomers which are emulsified and polymerized are mixed in a certain ratio, a dye leveler, thickener and the like are added in the mixture, the resulting product is coated and dried, polyvinyl butyral-based glue is coated, and the whole production of the hot stamping foil is finished. The hot stamping foil produced by the process has the characteristics of energy conservation, environmental protection and sanitation.

An environmental protection type bast fibre film which is air permeable and impervious is prepared from bast fibres through opening fibres, removing dust and impurities, carding, stripping for netting, airflow netting, chemical sticking by adhesive to become film, applying the hydrophobic agent onto its surfaces, and cold rolling.

The invention discloses a high-transparency ultraviolet-blocking energy-saving film and a solution-fusion preparation method thereof, which belong to the field of composite films. The film comprises the following components: 50 to 99.8 weight percent of thermoplastic polymer, 0.2 to 50 weight percent of metallic oxide nanoparticles (which at least comprise one kind of composite metallic oxide nanoparticles with a core-shell structure) and 0 to 39.9 weight percent of plastic assistant. The film is prepared by a solution-fusion mixing process which comprises the following steps of: transferring the metallic oxide nanoparticles from an initial disperse system to a solvent system capable of dissolving the thermoplastic polymer to prepare metallic oxide nanoparticle / thermoplastic polymer / solvent dispersion; and drying the obtained dispersion by atomization to obtain a dry powdered master batch and preparing the energy-saving film from the master batch, the thermoplastic polymer and the assistant by using the fusion mixing process. The film in the invention has high transparency, high ultraviolet light shielding performance and good energy-saving effects and is simple in preparation process, low in cost and suitable for industrial production.

Leak detector using infrared for identifying the presence and concentration of a selected gas. For detection, radiation from an infrared emitter penetrates the sample, which is analyzed spectrally, and results in a wave length-specific signal being generated at the output. By controlling the optical filter, the radiation is controlled at a selected wavelength, to ensure coverage of all selected compounds. For refrigerants, the selected wavelength can be between approximately 8 to approximately 10 microns. This wavelength obscures other signals, thus minimizing false alarms. The leak detector has a faster time with no adverse impacts on the accuracy of the compound being detected. To further minimize false alarms and to ensure that the emitter does not come in contact with the gas, an additional filter can be used. For refrigerant compounds, the filter can block out signals below approximately 6 microns. For detecting refrigerants, two filters can be used.

Horizontal polar plate multi-dimensional electrode electrocatalysis reactor wastewater treatment equipment comprises a shell, a cathode plate and an anode plate which are relatively parallel, a particle electrode filled between the cathode plate and the anode plate, a water distributor, a water inlet pipe, an aerator, an air inlet pipe, an effluent weir trough, a water outlet pipe and a power supply; the cathode plate and the anode plate are respectively connected with the cathode and the anode of the power supply; a plurality of through holes are distributed on the cathode plate and the anode plate which are horizontally positioned in the shell of the equipment; the water distributor, the water inlet pipe, the aerator and the air inlet pipe are positioned at the lower part of the shell of the equipment; and the effluent weir trough and the water outlet pipe are arranged at the upper part of the shell of the equipment. After being evenly distributed by the water distributor, the wastewater flows across a reactor from bottom to top; the horizontal polar plate structure design not only avoids the short circuit of water flow and improves the mass transfer effect, but also ensures that the wastewater can alternatively flow across the cathode plate and the anode plate and the oxidation reaction of the anode plate and the reduction reaction of the cathode plate coexist in a system, and causes different organic pollutants in wastewater which can be degraded by the oxidation reaction and the reduction reaction to be degraded and treated.

The invention discloses an ecological pesticide-added fertilizer scientifically prepared from minerals and organic fertilizers as fertilizer efficiency ingredients and Chinese herbal medicines as pest-killing and pest-dispelling ingredients, and a preparation method of the ecological pesticide-added fertilizer, belonging to the field of fertilizers. The ecological pesticide-added fertilizer is prepared from the following raw materials by weight parts: 6-50 parts of the organic fertilizers, 6.5-65 parts of crude salt, 3.5-35 parts of lime, 2-25 parts of atropa belladonna, 2-15 parts of poinsettia, 2-25 parts of alocasia macrorrhiza, 2-15 parts of rohdea japonica, 2-25 parts of flos daturae, 2-20 parts of chili and 2-25 parts of garlic. The ecological pesticide-added fertilizer has the characteristics of being safe, environment-friendly and free of toxic side effects, pesticide and fertilizer effects are integrated, the environment can not be polluted, the human health can not be threatened, a production process is simple, the material source is wide, and the pesticide effect and the fertility are good.

The invention discloses a bamboo-plastic composite material which comprises the following components in parts by weight: 20-60 parts of bamboo fiber, 30-70 parts of thermoplastic plastic, 0.5-2 parts of coupling, 1.5-5 parts of compatilizer, 0.5-2 parts of nucleating agent, 0.5-2 parts of lubricating agent and 2-5 parts of mixing aid. The invention discloses a preparation method of the bamboo-plastic composite material. On one hand, the bamboo-plastic composite material disclosed by the invention is light in weight and good in size stability, is better in mechanical property and strength compared with a wood-plastic composite material and can be applied to a material for internal walls and external walls; on the other hand, the bamboo-plastic composite material is good in surface smoothness and resistant to water, abrasion and chemical resistance and can be used as a building and ornament material, such as a bedding board; and the bamboo-plastic composite material is made of low-cost natural fiber, is environment-friendly and easy to degrade and is an environment-friendly novel material substituting for wood and plastic. The preparation method of the bamboo-plastic composite material is simple in process, easy to control and favorable in product stability.

Provided is a process for producing biomass-based product from straw hemicellulose and utilizing the components thereof thoroughly. Steam-explosion and acid-hydrolysis are combined in the pre-treatment of straw in the process, thus a higher concentration of a sugar liquid can be obtained, and furfural and acetic acid can be recovered. The hemicellulose obtained by the pre-treatment can be used directly as ferment materials for producing butanol, succinic acid, butylene glycol, lactic acid, hydrogen and firedamp, which reduces the cost of these biomass-based products. The cellulose and lignin obtained by extracting the straw with an alkaline solution can produce products, such as sodium hydroxymethyl cellulose etc. In the process, all components in the straw can be utilized thoroughly and waste and pollutant will not be produced.

The invention discloses a nucleic acid analyzing method based on cascade HCR (hybridization chain reaction), and belongs to the field of molecule detection. The nucleic acid analyzing method is characterized in that on the basis of single HCR, two stages of HCR reaction are designed, and the signals can be further amplified on the basis of single HCR; the hairpin nucleic acid probes marked with multiple different fluorescent dyes can be alternatively hybridized by a final target product, so as to form a branched DNA (deoxyribonucleic acid) nanometer structure; the signal output is provided bythe fluorescent resonance energy transfer, and the concentration of the target nucleic acid can be judged according to the change value of the fluorescence intensity of fluorophore. The nucleic acid analyzing method has the advantages that the nucleic acid analyzing method can be used for in-vitro detection of DNA and miRNA (miniature ribonucleic acid), the specificity is good, and the sensitivityis high; the nucleic acid analyzing method can be used for the imaging analysis of miRNA in cells, and be favorable for the early diagnosis on cancers.

The invention provides a sludge composting method, and relates to a sludge treatment method which comprises the steps of preferable accessory selection, CK21 fungus spraying inoculation, heavy metal passivation and powder granulation, and then three-dimensional composite biological organic fertilizer with organic, inorganic and microbial active constituents is obtained. Mushroom compost and pig manure are used as accessories which are easily obtained and degraded, the stacker fermentation time is short, only one time of fermentation is needed, the C / N ratio can be effectively adjusted, and the water content of the sludge is reduced; and the efficient beneficial bio-fungus community CK21 is adopted. The microbial concentration is high, the secretion ability of the enzyme is strong, organic matters can be quickly decomposed so as to prevent the corruption of the organic matters, no odor exists, sludge is used for CK21 inoculation, fermentation starts fast, and the effect is good; and the product is inoculated with the CK21 fungus secondarily so as to further balance and activate nutrients, and the microbial natural reproduction is utilized to realize the is called flower dipping absorbing of the plants to nutrients. The invention has the advantages of optimizing the composting conditions, shortening the composting time, reducing energy consumption of turning, and reducing the damage of the heavy metal on the ecological environment.

A detergent composition is provided, which contains a) anionic surfactant which is 0.1%-20% of total weight of the composition, wherein the mentioned anionic surfactant is selected from fatty alcohol - polyoxyethyleneether sulfate series, dodecyl sulfate series, secondary alkane sulphonate series and group formed by their mixture; b) nonionic surfactant which is 0.1%-30% of total weight of the composition; c) citrus essential oil which is 0.01%-3% of the total weight of the composition; and d) equilibrium amount of water. The other aspect of the invention is to provides a dirt cleaning method from substrate, which includes a step of contacting substrate with mentioned detergent composition in liquid and / or gaseous phase (or putting the substrate into the composition).

The present invention belongs to the technical field of functional materials, and in particular relates to a preparation method of a wear-resistant super-hydrophobic super-lipophilic polyurethane sponge, and the method comprises the following steps: 1) hydrophobic nano-silica and polydimethylsiloxane are uniformly dispersed in n-hexane or anhydrous ethanol to obtain a system A; 2) a cleaned polyurethane sponge is put into the system A obtained in the step 1) for soaking for 1-2h, then taken out, and put into a drying oven for drying to obtain the wear-resistant super-hydrophobic super-lipophilic polyurethane sponge. The preparation method is simple, through nano-silica / polydimethylsiloxane modifying, the surface energy of the polyurethane sponge can be reduced, the surface and bulk phase of the polyurethane sponge both can reach super-hydrophobic super-lipophilic functions. Surface contact angles of organic solvents such as paraffin oil, petrol, diesel oil, n-hexane, acetone and the like on the surface of the polyurethane sponge is 0 degree, and a surface contact angle of water on the polyurethane sponge is greater than 150 degree. The prepared polyurethane sponge has excellent wear resistance, is non-fluorinated and environmentally friendly, and can be used for continuous separation of an oil and water mixture.

The invention discloses a stone papermaking method, which is characterized by comprising the following steps: adding 2 to 2.5 weight percent of auxiliary agent such as stearic acid and the like into 70 to 80 percent of natural inorganic ore powder such as heavy calcium, light calcium, talcpowder, titanium white powder and the like serving as main raw materials to modify the raw materials, adding 18 to 11.5 weight percent of polyethylene and 9 to 5 weight percent of polypropylene into the raw materials, and mixing, plasticizing and kneading the mixture to form a bulk material; and performing double-fold feed on the bulk material, pressing the bulk material into a paper film extruder, injecting 0.5 weight percent of butane and 0.5 weight percent of nucleating agent into the extruder, mixing and heating the mixture, extruding a paper film, then foaming, blowing, drawing, cooling and shaping the paper film to form a paper film base material, and forming a stone paper finished product through corona, coating, drying and finishing. The gram weight of stone paper is reduced by physical micro-foaming technology. The method has the advantages of simple manufacturing process, low cost, dry production, use of few water circulating cooling machines, no three-waste discharge and pollution avoidance.

The invention discloses a special black master batch for polylactic acid based degradable plastics and a preparation method thereof. The special black master batch for polylactic acid based degradable plastics comprises the following components in percentage by weight: 20-40% of pigment carbon black, 15-30% of dispersing lubricant and 40-65% of carrier resin, wherein the carrier resin adopts polylactic acid. In the special black master batch for polylactic acid based degradable plastics, the polylactic acid carrier resin is taken as a basic component, and interacted with the pigment carbon black, the dispersing lubricant and the like in the extrusion process, thus special black master batch for polylactic acid based degradable plastics has the advantages of good compatibility and easy dispersing. In the process of preparing the plastics by using the special black master batch for polylactic acid based degradable plastics, the black master batch is used a little, the prepared plastic is good in mechanical behaviors, easy in degradation, and economic and environmentally friendly. In the preparation method, the process is simple, and the cost is low; and the preparation method is suitable for industrialized production.

The invention discloses an organic fertilizer from fermented manure, which is prepared from the following raw materials in parts by weight: 34-42 parts of chicken manure, 24-38 parts of pig manure, 25-30 parts of cow manure, 24-28 parts of earthworm manure, 18-20 parts of lime powder, 7-15 parts of silkworm manure, 10-12 parts of corn, 8-12 parts of potassium sulphate, 6-8 parts of straw, 6-9 parts of urea, 4-6 parts of cottonseed cake, 4-8 parts of plant ash, 3-4 parts of ferrous sulphate, 3-4 parts of an EM fungicide, 4-5 parts of a soil modifier, and proper water. According to the invention, because of comprehensive nutrient, the fertilizer can be rapidly absorbed by crops; a plurality of fermented manure can be easily degraded; the organic fertilizer disclosed by the invention is free from pollution to soil and accords with the principle of sustainability; at the same time, the preparation method is simple and low in cost; pollution does not exist in the whole process; in addition, the fertilizer is capable of effectively preventing soil from being hardened; plant diseases and insect pests at roots can also be effectively prevented; and the organic fertilizer disclosed by the invention is applied to scale production and popularization.

The invention relates to a method for preparing opening micropore plastic material though slack-melting, extruding and molding. The method includes the processes: after reaching from a feeding device arranged on a double piston extruder to a heating material cylinder, preheating plastic powder with particle size of 40-1500 meshes is extruded by the piston driven by a hydraulic driver and compacted, transported and heated constantly; when the surface temperature of the plastic powder reaches the melt temperature of Tf plus or minus 20 DGE C, the power is extruded from a machine head and a die. Then, extruding matters are cooled and set by a cooling-traction device and the products are finished. By regulating the particle size of the powder, addictive and forming process conditions and so on, the invention can control opening rate, size and distribution of the aperture; the invention has simple process, short production cycle, low forming temperature and pressure as well as short forming time; besides, the invention can greatly reduce the production cost can not be degraded easily when the plastic is processed and can be widely applicable to molding of the opening micropore products of thermoplastic powders, thermosetting power and so on.

A zero-valent metal emulsion is used to dehalogenate solvents, such as pooled dense non-aqueous phase liquids (DNAPLs), including trichloroethylene (TCE). The zero-valent metal emulsion contains zero-valent metal particles, a surfactant, oil and water. The preferred zero-valent metal particles are nanoscale and microscale zero-valent iron particles.