43results about How to "Effective cohesion" patented technology

The invention provides an expansive soil direct shear test device and a shear strength measurement method. The device comprises a strain type direct shear instrument and a loading plate, wherein the loading plate is provided with a limiting structure and a pressure sensor; a larger overlying load is applied before a sample is soaked in water, the limiting structure controls the bottom surface of the loading plate to be contacted with the top surface of porous stone at the upper part of the sample, and the sample is not affected by the overlying load. The measurement method comprises steps as follows: static-pressure sample preparation is carried out according to geotechnical test rules of roads, the sample is soaked in water in constant volume, vertical expansive force is measured, a direct shear test is performed with the vertical expansive force as the overlying load, and effective cohesion and effective internal friction angle of experimental expansive soil are obtained. The test device and the method have the advantages of being simple, convenient to operate, reasonable in structure and economical and guarantee consistent micro-structure before sample shear under the action ofdifferent overlying loads in the direct shear test, so that the problem that shear strength parameters of expansive soil cannot be accurately obtained for a long time in the field is solved, and accurate design parameters are provided for civil engineering structure design of the expansive soil.

The invention provides an amphipathic polypeptide molecule which can be used as a gene vector, and belongs to the field of gene engineering. The amphipathic polypeptide molecule can be combined with a gene molecule and introduces effective condensation thereof, and furthermore transfers the gene molecule into a cell so as to achieve high-effective gene transfection. A sequence of the amphipathic polypeptide molecule is represented as follows: Ac-Arg-Gly-Asp-Gly-Pro-Leu-Gly-Leu-Ala-Gly-Ile-Ile-Ile-Gly-Arg-Arg-Arg-Arg-Arg-Arg-Arg-Arg-NH2. The amphipathic polypeptide molecule can be combined with the gene molecule, so that the molecule has high cell combining capability and penetrability, and can be used as a gene vector and high-effectively applied to gene transfection.

The invention discloses a water treatment technique, particularly a pretreatment method for enhancing BOD (biochemical oxygen demand) absolute value of chemical waste acid. Water quality regulation, pretreatment of chemical waste acid with ozone, rare earth-iron carbon micro-electrolysis, ozone catalytic treatment, neutralization, settling and other steps are carried out to effectively enhance the BOD absolute value of the chemical waste acid, thereby lowering the difficulty of subsequent biochemical treatment. The invention greatly lowers the treatment difficulty of subsequent conventional biochemical reaction, has the advantages of favorable treatment effect, low cost and the like, can treat waste with waste, and is simple to operate.

The invention discloses an air cleaner. The air cleaner is characterized by comprising a plasma module and a water filter module. The plasma module comprises a discharge electrode which generates plasma through high voltage discharge. The water filter module comprises a humidifying plate and a water tank, wherein part of the humidifying plate is immersed in water and rotates, then air is taken into the water, and the functions of humidifying and filtering are achieved. By means of the air cleaner, the plasma generated through electric discharge is combined with the water filtering so that the humidified air can carry rich negative oxygen ions; the plasma can achieve the effects of sterilization and disinfection, effectively remove volatile organic compounds and allow dust particulate matter to be charged and accumulated, so that the water filtering efficiency is greatly improved, and the water changing period is prolonged.

The invention belongs to the field of crude-oil sewage treatment, and more particularly relates to a crude-oil sewage treating agent. The crude-oil sewage treating agent comprises a demulsifying agent, a flocculating agent and a solvent, wherein the mass ratio of the demulsifying agent, the flocculating agent and the solvent is 25:1:74. The crude-oil sewage treating agent has the beneficial effects that the non-ionic type surface active agent is adopted, the oil-water interface of emulsified particles can be quickly reached, a water layer is released, so that emulsified oil drops are free; simultaneously the molecules of the surface active agent also can play a role of bridging, the oil drops are effectively condensed, the upward floating of the oil drops is accelerated; and in addition, good compatibility of the non-ionic type reagent is beneficial to the synergistic effect of multiple chemical components, and the purpose of multiple functions with one agent in the process of sewage treatment is realized.

The invention provides a delta-valerolactone-based polymer. The structure of the delta-valerolactone-based polymer is subjected to infrared, nuclear magnetism and gel permeation chromatography characterization. The invention further discloses a preparation method and application of the delta-valerolactone-based polymer. The delta-valerolactone-based polymer is prepared through a Click reaction and a ring-opening polymerization, the reaction is simple and convenient, and the yield is high. The delta-valerolactone-based polymer is degradable under a certain condition, and acts with nucleic acid to form nano-particles easy to adsorb by cells; green fluorescent protein (GFP) and luciferase (Luciferase) expression experiments testify that the polymer can serve as a degradable non-viral gene vector and has high transfection efficiency; and the preparation method of the polymer and a preparation method of a transgenic vector are simple, mature and easy to learn.

The invention relates to a soil heavy metal passivator and a preparation technology thereof. The soil heavy metal passivator is prepared from 30-40 wt% of a modified carrier filler, 20-24 wt% of a biological improver, 10-14 wt% of polyacrylic acid gel, 3-5 wt% of a silane coupling agent, 1-3 wt% of a dispersant, and the balance of deionized water. The biological improver is loaded by adopting themodified carrier filler, and the modified carrier filler is wrapped with a layer of the polyacrylic acid gel, so the heavy metal passivator has a slow release effect, the passivator can release the biological improver loaded in the filler according to the change of the external temperature, pH value, illumination and other conditions when used, and the soil heavy metal passivator avoids secondarydamage to soil due to excessive addition of the passivator when used, thereby workers can conveniently and practically apply the soil heavy metal passivator, and the working efficiency is improved.

The invention provides an adsorption / flocculation / photocatalysis composite dye wastewater treatment agent and a wastewater treatment method, and relates to the technical field of wastewater treatment.The adsorption / flocculation / photocatalysis composite dye wastewater treatment agent is prepared from the following raw materials (by weight): 0.1-0.5 part f cerium and gadolinium codoped nano-TiO2, 60-80 parts of PDMDAAC modified diatomite and 20-35 parts of an inorganic polymer flocculant. By combining adsorption, flocculation and photocatalysis and selecting appropriate raw materials, the prepared wastewater treatment agent has excellent treatment effect on dye wastewater, and has high decolorization rate, high COD removal rate and good degradation effect.

The invention discloses a biological enzyme purifying agent for treating black-odor river The biological enzyme purifying agent for treating black-odor river comprises the following components in parts by weight: 20-50 parts of biological enzyme, 10-15 parts of rhodococcus erythropolis sludge flocculant, 10-18 parts of chitosan quaternary salt, 10-15 parts of grape seed extract, 5-15 parts of sweet potato extract and 10-15 parts of polyaluminium chloride and 8-12 parts of polygalanthamine. Under the combined action of a plurality of components, the water purification effect of the water body is remarkable, the quality of the water body can be obviously improved, the dissolved oxygen content in the water can be improved, the growth of the harmful bacteria is inhibited, the suspended mattersand harmful algae in the water are removed, the content of the nitrogen and the nitrate nitrogen in the water body is reduced, the water body is clarified, the odor is eliminated, the degradation ofthe pollutants is promoted, and the benign development of the water is promoted. The raw material resource used is rich, the preparation process flow of the water purifying agent is simple, the production period is short, the operation is simple, the production cost is low, and the water purifying agent is suitable for industrial production.

The invention discloses a tannic acid modified polyethyleneimine compound, a preparation method thereof and a gene vector, and relates to the technical field of biological medicine. The tannic acid modified polyethyleneimine compound has a structure shown as the following structural formula (I). According to the invention, tannic acid is used as a modification group to modify polyethyleneimine soas to obtain a tannic acid modified polyethyleneimine compound with a structure shown as the structural formula (I). The tannic acid modified polyethyleneimine compound can effectively coagulate DNA to form a nano-composite, can be used as a gene vector to transport DNA, and has the advantages of low toxicity, good biocompatibility and good water solubility due to the adoption of natural polyphenol tannic acid with good biocompatibility and low cytotoxicity as the modification group. Besides, the compound can be obtained through two-step reaction, the synthesis steps are few, the reaction operation is simple, and the synthesis cost is reduced.

The invention relates to nanometer scale iron powder, in particular to water purification special purpose iron powder. The invention solves the problems existing in the prior art that the treatment effect of drinking water is poor, and each index can not reach the requirement. Through utilizing the cutting manufacturing process of the zero zone particles of the nanometer powder body under the circumstance of 5 DEG C to 15 DEG C below zero DEG C and the circumstance of setting the high frequency cutting times to be in 3500 times to 4000 times per minute, drinking water conglomeration special purpose iron powder is produced, and then Powder materials of D3 =32nm D25=D3=51nm D50=100nm D75=132nm D97=173nm are graded, before the coating, the pervasion of 510 DEG C semi-hot gas is performed to iron powder particles, to lead the surface of the iron powder particles to form a medium hole honeycomb shape, and then the anti-oxidization coating is performed to the iron powder particles. When being used, the invention can effectively remove the hazardous materials in water such as microorganism and heavy metals, etc.

The invention relates to a high-efficiency absorption hemostatic dressing and a preparation method thereof, and belongs to the technical field of medical consumables. The high-efficiency absorption hemostatic dressing of the invention includes a hemostatic layer, an absorption core layer, an antibacterial layer, a waterproof layer and a bottom layer in order. Preparation raw materials of the absorption core layer include fluff pulp and super absorbent resin. The absorption core layer of the invention adopts an absorption structure composed of the super absorbent resin and the fluff pulp, and so a large amount of blood can be quickly and fully absorbed and effectively coagulated without leaking back, thereby ensuring anti-seepage and anti-leakage. Meanwhile, the high-efficiency absorption hemostatic dressing has waterproof, breathable, antibacterial and hemostatic effects, promotes rapid healing of wounds, and is widely used in patients with moderate and severe bleeding.

The invention discloses a method for pretreating industrial waste water. The method comprises the following steps of: performing micro-electrolysis on an iron-carbon alloy, oxidizing the iron-carbon alloy by ozone, chemically precipitating calcium oxide and calcium chloride, stripping off ammonia and absorbing by acid. The BOD5 / CODCr(B / C) of the industrial waste water treated by using the method is increased by over 45 percent, the chemical oxygen demand (COD) removal rate is more than 75 percent, the SO4<2-> removal rate is more than 90 percent, and the (NH3-N) removal rate is more than 93 percent.

The invention provides a low-carbon source high-ammonia nitrogen high-organic phosphor waste water combined type biological bed treatment technology. Five steps of raw water regulation, iron-carbon-internal Fenton treatment, struvite treatment, A2O treatment and Fenton deep processing are included, a first flocculating agent and a second flocculating agent are added to the iron-carbon-internal Fenton treatment and the Fenton deep treatment steps respectively. The low-carbon source high-ammonia nitrogen high-organic phosphor waste water combined type biological bed treatment technology is takenas the primary treatment manner of low-carbon source high-ammonia nitrogen high-phosphor waste water, the biochemical treatment efficiency is greatly improved, the problem of standard meeting emission of the low-carbon source high-ammonia nitrogen high-phosphor waste water is solved, and the technology has better social benefits and economical benefits; the Fenton effect is improved by the combination of internal Fenton, iron-carbon, micro electrolysis and Fenton, and the operation cost and operation working intensity are reduced.

The invention discloses a hanging downcomer for a liquid-liquid extractor. The hanging downcomer comprises a downcomer main body, a rotatable tubular baffle plate and a guide plate, wherein the guide plate is fixed at the lower end of the downcomer main body, the rotatable tubular baffle plate is sleeved outside the downcomer main body and is arranged on a plane of the guide plate in a movable manner, holes are respectively formed in the lower part of the downcomer main body and the equal-altitude circumference of the rotatable tubular baffle plate, and when the rotatable tubular baffle plate rotates, the circulating area of the hole in the lower part of the downcomer main body is correspondingly increased or reduced. According to the hanging downcomer, improvement of the operating flexibility of an extracting tower is facilitated, and after an operating condition changes, a tower plate or the downcomer of the extracting tower is not required to be reconstructed, the circulating area is regulated so that the normal production requirement can be met, and thus the capital investment for reconstruction of internals of equipment can be saved, and the economic loss in a parking and reconstructing period is reduced.

The invention discloses a macrocyclic polyamine compound based on DEDPP-2TPA, and a preparation method and use thereof. The disclosed compound is mainly prepared and synthesized by Suzuki coupling andcondensation reactions, an esterification reaction and a Click reaction, and the structure of the compound is also confirmed by nuclear magnetism and a mass spectrum; the compound has the propertiesof large Stock displacement and two-photon fluorescence, and an aggregation induction effect (AIE); after the compound interacts with nucleic acid, nanoparticles which are easy to uptake by cells areformed by co-aggregation; experiment of green fluorescent protein (GFP) and luciferase expression proves that a lipidosome formed by the compound with dioleoyl-phosphatidylethanolamine (DOPE) can be used as a non-viral gene vector; and cell uptake and release processes are traced by a single photon and two photons.

The invention provides a bioflocculant and a preparation method thereof, and belongs to the technical field of pollution treatment. The preparation method of the bioflocculant comprises the followingsteps: performing micro-aeration treatment on activated sludge to obtain pre-treated activated sludge, wherein the activated sludge is activated sludge with bacterial micelles in an aeration tank of abiochemical system of a sewage treatment plant; mixing the pretreated activated sludge with Bacillus and then performing aeration treatment to obtain an aeration product; mixing the aeration productwith a carbon source, urea and trisodium phosphate, and then sequentially adding an auxiliary material, a thickener, a biological activating enzyme and dry powder anaerobic bacteria to obtain a semi-colloidal substance; and drying the semi-colloidal substance and then performing crushing to obtain the bioflocculant.

The invention belongs to the technical field of road raised dust treatment, and relates to a moisturizing type dust suppressant for road raised dust and a preparation method of the moisturizing type dust suppressant. The moisturizing type dust suppressant for road dust raising is prepared from the following raw materials in percentage by mass: 3.6-8% of a mixture of acetyl tributyl citrate, a water-based stearic acid emulsion and soluble starch, 0.1-10% of a binder, 0.1-5% of a moisturizing agent, 0.1-1% of a surfactant and the balance of water. The road dust suppressant provided by the invention is sprayed on a road to form a layer of soft film with strong moisture retention, and small particles on the ground surface can be effectively condensed into large particles so as to effectively prevent secondary raising of dust, so that a dust suppression effect is achieved.

The invention provides a sewage treatment agent and belongs to the technical field of sewage treatment. The sewage treatment agent comprises an oxidation modification product of lignosulfonate; the oxidation modification product of the lignosulfonate is obtained by taking hydrogen peroxide as an oxidant, and trimethylamine hydrochloride and 5-aminolevulinic acid as initiators under the environmentcontaining alkali and carrying out oxidation modification. A preparation method of the treatment agent comprises the following steps: preparing aminated attapulgite into a suspension solution; addingthe oxidation modification product of the lignosulfonate, polyacrylamide and a derivative thereof, diatomite, thiourea, acrylaldehyde and propylene oxide into the suspension solution; stirring, suction filtering and drying to obtain the treatment agent. The sewage treatment agent provided by the invention has the advantages of high flocculation strength, high stability and activity, good hydrophobic property, good chemical corrosion resistance and heat resistance, no corrosion, small dosage, high treatment efficiency and low treatment cost; the preparation method has the advantages of simplicity, great parameter controllability, high safety and low production cost.

The invention discloses a preparation method of a purification agent for river crab culture water. The preparation method comprises the following steps: firstly, grinding calcium gluconate into powder, uniformly mixing the powder with chitosan; then, adding EM (Effective Microorganism) biological bacterial liquid, and performing stirring; and finally, adding a composite flocculant, and performingcontinuous stirring to obtain a finished product of the purification agent for river crab culture water, wherein the composite flocculant is prepared from the following raw material components in parts by weight: 5-8 parts of ferrous sulfate, 20-30 parts of polyacrylamide, 9-14 parts of modified attapulgite and 2-5 parts of diisopinyl borane. The preparation method of the purification agent for river crab culture water, disclosed by the invention, is simple and feasible, easy to operate and convenient to industrialize; and the prepared purification agent for river crab culture water not only can effectively remove harmful substances in water, improve the ecological environment for culture and enhance the immunity of river crabs but also can supplement calcium ions required for river crab shelling, thereby being favorable for healthy growth of the river crabs and promoting the development of river crab culture.

The invention belongs to the technical field of road dust control, and relates to a moisturizing dust suppressant for road dust and a preparation method thereof. The moisturizing dust suppressant for road dust of the present invention is prepared from the following raw materials in mass percent: 3.6% to 8% of a mixture of acetyl tributyl citrate, aqueous stearic acid emulsion and soluble starch, and 0.1% of a binder. ~10%, humectant 0.1~5%, surfactant 0.1~1%, balance is water. The road dust suppressant provided by the invention is sprayed on the road to form a layer of "soft film" with strong moisture retention, which can effectively condense the small particles on the ground surface into large particles, so as to effectively prevent the secondary raising of dust, thereby To achieve the effect of dust suppression.

The invention provides a macrocyclic polyamine amphipathic compound based on green fluorescent protein chromophore BI and a preparation method and application thereof. The compound provided by the invention is mainly prepared through carbonyl ammonia condensation, a 1,3 dipolar-cycloaddition reaction, an esterification reaction and a Click reaction. The compound provided by the invention has goodtwo-photon fluorescence properties, and has the advantages of being long in emission wavelength, high in 3D resolution ratio, low in self-illumination, and the like; chromophore mechanisms of green fluorescent proteins are artificially simulated; the compound provided by the invention is capable of forming a pH value response small molecule non-viral genetic vector together with dioleyl phosphatidylethanolamine (DOPE), then release of DNA (Deoxyribonucleic Acid) is promoted, and the compound has very high transfection efficiency and is capable of targeting cell nucleuses.

The invention discloses a cherax quadricarinatus soil pond culture sewage treatment method, and belongs to the technical field of sewage treatment. The culture sewage treatment method comprises microbiological treatment, flocculating agent flocculation treatment, membrane filtration treatment and sewage reflux treatment, and in view of the fact that cherax quadricarinatus is one of rare freshwater economic shrimp species, inorganic chelating agents such as metal ions are prevented from being used for purifying sewage; a microbial preparation is matched with a non-toxic high-molecular-weight organic flocculant, so that the water quality and safety are guaranteed, the production efficiency is improved, in addition, membrane filtration treatment is adopted, it is guaranteed that the water quality is balanced, enzyme is not lost and can be repeatedly used, pollutant separation is completed, it is guaranteed that effluent does not contain pathogenic bacteria and the like, a sterilization device does not need to be additionally arranged, and environmental pollution is avoided. The production cost is greatly reduced, and the method has the advantages of simple process, stable system, small occupied area, low operation cost and the like.