47results about How to "Prolong the duration of action" patented technology

An eye gel of Ganciclovir for treating viral keratitis is proportionally prepared from ganciclovir and eye gel matrix through mixing Ganciclovir, eye gel matrix and water, stirring, regulating pH value, adding water, stirring and sterilizing.

The invention discloses an ecological environment sand fixing material and a preparation method thereof, which belongs to the technical field of sand environmental governance. The preparation method comprises the following steps: oxidizing and homogenizing wood pulp used as a raw material to obtain nano fibers, adsorbing silicon dioxide on the surface of the nano fibers, by adopting the silicon dioxide as a supporting material, slowing heating, carbonizing the nano fibers to obtain nano fibers of a hollow structure, taking the hollow nano fibers as carriers, respectively wrapping polyaspartic acid emulsion and a hexanediamine solution inside the hollow fibers, performing end-sealing treatment by virtue of urea resin, respectively preparing a fiber component A and a fiber component B, and then compounding with chitosan, glutaraldehyde, casein, borax, polyethylene glycol and the like, thus obtaining the ecological environment sand fixing material. The sand fixing material is short in setting time, has a good sand fixing effect, and is capable of creating a good water-soil environment to the growth of plants, capable of effectively improving the ecological environment, and capable of facilitating the growth of desert plants.

The invention discloses a steady-state polycarboxylate superplasticizer with a core-shell structure and a preparation method of the steady-state polycarboxylate superplasticizer. The core structure ofthe steady-state polycarboxylate superplasticizer with the core-shell structure is obtained by emulsion polymerization of a vinyl glycol ether monomer containing hydrophobic chain segments, a derivative monomer A of the vinyl glycol ether monomer, an unsaturated carboxylic acid or an anhydride monomer B, an alkyl acrylate monomer C and an allyl polyether reactive emulsifier D; wherein the shell structure is obtained by polymerizing a vinyl polyethylene glycol ether monomer and a derivative monomer E thereof, an unsaturated carboxylic acid or anhydride monomer B and a (methyl) acrylic acid hydroxyl ester unsaturated small molecular substance F through an aqueous solution. The preparation method of the steady-state polycarboxylate superplasticizer is simple, the initial dispersity is good in engineering use, the fluidity of concrete can be kept for a long time, the workability of the concrete can be remarkably improved, and the steady-state polycarboxylate superplasticizer has excellentmaterial adaptability.

The invention belongs to the technical field of polyester fabric and particularly relates to a preparation method of polyester fabric. The preparation method of the polyester fabric comprises five steps of selecting and checking raw materials, bleaching and airing the qualified raw materials, soaking and drying, weaving as well as performing film plating and hole opening. Lemon-grass oil serves asa main component of mosquito repellent, the lemon-grass oil consists of geranialdehyde, neral, geraniol, geranic acid and linalool, mosquitoes can be effectively repelled, chrysanthemum, mint leaf and xanthium serve as auxiliary components of the mosquito repellent, and xanthostrumarin in the xanthium has mild or moderate inhibition effect on fungi in the air, so that the lemon-grass extract canbe prevented from going mouldy and the action time of the lemon-grass extract is prolonged.

The invention discloses an endoscopic treatment gastric ulcer dressing device. The endoscopic treatment gastric ulcer dressing device comprises an endoscope, a placing umbrella, a body, a protective film and a pulling rope, wherein the placing umbrella is connected with the endoscope, the body is fixed to the bottom of the placing umbrella through a connecting rope and used for storing dressing, the protective film is bonded to the bottom of the body and used for protecting the sealing performance of the body, the top of the pulling rope is connected to the left side of the placing umbrella, the periphery of the protective film is covered with the bottom of the pulling rope, and the pulling rope is fixedly connected with the right side of the protective film; seepage absorption bins for placing hemostasis damask silk are formed in the left side and the right side of the interior of the body, and a medicine release bin for adding medicine is arranged in the body and in the middle of theseepage absorption bins; the bottom of the body and the outer sides of bin openings of the seepage absorption bins are provided with adhesive films used for being attached to normal digestive walls on the periphery of ulcer; and the placing umbrella is made of rubber materials, and an iron wire used for adjusting the angle of the body is arranged in an umbrella handle of the placing umbrella.

The invention relates to a lignosulfonate-polyvinyl alcohol blended coated soil conditioner and a preparation method thereof. The lignosulfonate-polyvinyl alcohol blended coated soil conditioner comprises a calcareous conditioner and a coating coated on the outer side of the calcareous conditioner, wherein the coating comprises the following raw materials in parts by weight: 2 to 10 parts of lignosulfonate, 9 to 11 parts of polyvinyl alcohol, 2 to 10 parts of urea, 1 to 10 parts of formaldehyde and 48 to 52 parts of water. The lignosulfonate-polyvinyl alcohol blended coated soil conditioner prepared by using the method provided by the invention can be applied to improvement of acidity of farmland soil and treatment of heavy metal pollution, is safe and hazard-free, mitigates stimulation and injury to users, facilitates transportation of calcareous substances, and has the effect of improving acidic soil better than the effect of improving the acidic soil by directly applying the calcareous substances.

The present invention proposes a surface treatment agent and a surface treatment process for metal stamping parts. The surface treatment agent comprises the following parts by mass: 20-30 parts of silica sol, 1-5 parts of vinyl acetate, and 0.5-2 parts of alkyl glycoside , 2-5 parts of epoxy fatty acid methyl ester, 3-6 parts of alkanolamide, 2-4 parts of lithium silicate, 1-3 parts of trifluoroethyl methacrylate, 3 parts of hydroxyl-terminated polydimethylsiloxane ‑5 parts, water 0‑30 parts, made by heating, stirring, water bath, ultrasonic and other steps, combined with tung oil for the surface spraying treatment of metal stamping parts, greatly improving the wear resistance, corrosion resistance, corrosion resistance of metal stamping parts Rust, waterproof and stain-resistant properties, and strong bonding with the metal surface, with a certain degree of self-drying, which significantly improves the overall performance of metal stamping parts and prolongs the service life.

The invention provides a washing machine washing and bleaching integrated washing method. The method comprises the following steps that 1, a water inlet system performs primary water inflow; 2, a washing system executes a main washing program; 3, a drainage system performs partial draining; 4, a water inlet system performs water inflow, and the washing system executes a continuous washing program;5, the washing system judges whether or not the washing water meets the preset condition, if not, step 3 is executed, and if yes, step 6 is executed; 6, the drainage system performs complete draining. Accordingly, by integrating ordinary washing and bleaching processes, during the washing and bleaching integration period, a method of multiple partial discharging-water reentering is adopted, and then the problem that due to attachment of detergent residual components and washing dirt, the clothes are yellow and dark is avoided to the maximum extent; meanwhile, the contact time of detergent andclothes dirt is prolonged, the detergent can fully remove stains for the clothes, and the clean ratio in the washing process is increased conveniently.

The present invention proposes a sweat-absorbing and deodorant slippers and a preparation process thereof, comprising a plastic shoe body and a fiber lining, the plastic shoe body including a sole and a vamp, the upper surface of the sole and the lower surface of the vamp are fitted by Velcro. There is the fiber lining, the plastic shoe body is made of modified polyurethane material, and the fiber lining is modified blended fiber cloth. The slipper of the present invention adopts a two-layer structure, and the plastic shoe body and the fiber lining can be connected by Velcro. Tear and fit, easy to clean and replace. Compared with disposable slippers, it is safe and environmentally friendly, and can effectively reduce costs. In addition, the plastic shoe body made through a reasonable formula combination is comfortable, soft, strong and tough, antibacterial and wear-resistant, and with fiber The lining absorbs sweat, deodorizes, sterilizes, and has good air permeability, which improves the overall quality.

The invention relates to the technical field of biopesticides, in particular to an insect virus and sex pheromone microcapsule and a preparation method thereof. The preparation method of the microcapsule comprises the following steps: uniformly mixing the insect virus-containing microcapsule and the insect sex pheromone to obtain a mixture, mixing the mixture and a chitosan solution, and filtering to obtain the insect virus and sex pheromone microcapsule. The insect virus and sex pheromone microcapsule is safe and environment-friendly, can effectively attract insects, improves the insect killing efficiency, protects insect viruses from being inactivated by irradiation of sunlight, especially ultraviolet light, and prolongs the preservation time of a virus insecticide in the environment.

The invention discloses a flue gas denitration catalytic reactor. Theflue gas denitration catalytic reactor is arranged in a flue, catalytic reaction units in the catalytic reactor consist of a porousplate and a catalyst; the catalyst is arranged in an accommodating cavity enclosed by the porous plate; a connecting plate and the catalytic reaction unitsare detachably connected; an upper connecting plate and a lower connecting plate in the connecting plate are sequentially arranged in a staggered mode from the inner wall of acasing to the center; a detachable cover plate is arranged ateach ofthe tops of the catalytic reaction units;the flue gas in the flue enters an air inlet at the bottom of the casing from the flue gas denitration catalytic reactor,since the catalytic reaction unitsareconnected through the upper connecting plate and the lower connecting plate, the flue gas crosses a catalyst layer according to the internal design, undergoes a catalytic reaction throughthe catalyticreaction units, enters an upper air outlet passage corresponding to the lower connecting plate, and is discharged from the air outlet. According to the structure, the structural strength which the catalyst needs to withstand is reduced, the duration of the catalyst action is prolonged, and thus the catalyst utilization efficiency is improved.

The invention discloses a high-viscosity asphalt material for purifying automobile exhaust and a preparation method of the high-viscosity asphalt material. The high-viscosity asphalt material comprises the following components in parts by weight: 100 parts of matrix asphalt; 1-20 parts of an asphalt modifier; 3-20 parts of biomass heavy oil; 5-18 parts of a thermoplastic block copolymer; 0.1-1 part of a stabilizer; and 1 to 15 parts of DOA. The asphalt modifier takes a lanthanide metal oxide as a carrier and a transition metal oxide as a catalytic active component. The high-viscosity asphalt material disclosed by the invention can efficiently and durably purify main pollutants such as nitrogen oxides in automobile exhaust in a pavement temperature range no matter whether sunlight exists or not, and meanwhile, the noise pollution of urban pavements is effectively reduced, the friction force of the pavements is enhanced, the generation of water films is inhibited, and the material can be widely applied to construction of modern asphalt pavements and sponge cities.

The invention relates to a preparation method of a long-acting stable type foam dust suppressant material, and belongs to the technical field of the dust suppressant materials. According to a technical scheme of the invention, supercritical carbon dioxide is adopted to carry out extraction, so that thuja sutchuenensis essential oil can be effectively extracted and used as a raw material; when bubbles are generated, surfactant molecules are distributed on the surface of a liquid membrane, and the surfactant molecules are large in viscosity, thus being easy to form a surface membrane with high strength; therefore, the liquid membrane is difficult to break and the service lives of foams are also relatively long; meanwhile, the material prepared by the invention effectively reduces surface tension so as to be beneficial to the dispersion of air in liquid, prevent merger among the foams, be beneficial to the formation of micro bubble structures, generate a great amount of foam and improve efficiency of a foam dust suppressant; by reducing the surface tension of water, a contact angle between water and dust is reduced, so that an aqueous solution has relatively high wettability and adhesivity to the dust; the affinity of water to the dust is improved; and the wetting capacity and dust suppression effect of water to the dust are improved, thereby further improving the suppressing efficiency and action time-effect of the foam dust suppressant material to the dust.

The invention relates to the field of water treatment agents, and particularly discloses a sterilization algicide for coking sewage treatment and a preparation method thereof. The sterilization algicide for coking sewage treatment comprises a porous load matrix and a coating layer arranged on the porous load matrix in a filling mode, wherein the coating layer comprises, in parts by weight, 10-15 parts of chitosan, and 6-8 parts of a composite beneficial bacterium agent; and the compound beneficial bacterium agent comprises one or more of a bacillus pumilus agent, an actinomycete agent, a lactobacillus fermentum agent and a lactobacillus casei agent. The preparation method comprises the preparation steps of S1, performing preliminary compounding; S2, performing secondary mixing; and S3, grinding and compounding. According to the invention, a composite system formed by the porous loading matrix and the coating layer of the beneficial bacterium agent is adopted, so that the service life of the sterilization algicide is prolonged, and good sterilization and algicide effects are achieved.

The invention discloses photoactivated implant surface decontamination sol as well as a preparation method and application thereof, solves the problem that residual bacteria cannot be killed and extracellular polymers of the residual bacteria cannot be removed on the premise that the surface of an implant is not damaged in the prior art, and belongs to the technical field of implant infection treatment. The photoactivated implant surface decontaminating sol is prepared from the following raw materials: peroxide, oxygen-deficient titanium dioxide, an excipient and water, wherein the surface decontaminating sol comprises 1-300 mg/mL of oxygen-deficient titanium dioxide; the mass concentration of peroxide in the surface decontamination sol is greater than 0.1 and less than or equal to 40%. According to the invention, the synergistic effect of photo-thermal, photocatalysis and Fenton effect of defective titanium dioxide is applied, so that the sterilizing and decontaminating effects are obviously enhanced. The decontamination sol has the advantages of mildness, broad spectrum, no damage to normal tissues and original structures or coatings on the surfaces of the implants, capability of thoroughly cleaning the implants and the like, and provides a powerful means for decontamination and cleaning of infected implants.