87results about How to "Large amount of solution" patented technology

The invention discloses an intelligent access control system for a grain depot as well as a metering system and a metering method. The automation of the access control management of vehicles entering in and out of the grain depot and the metering operation can be realized by the ground coil induction technology, the RFID (radio frequency identification device) technology, the vehicle license plate recognition and wagon balance automatic weighing technique and the like, and a problem that a large number of workers are involved in the prior art is solved; the RFID technology is adopted to register the vehicle information in real time and upload the information to the follow-up links, and the phenomena that the information cannot be checked easily and misoperation can be caused easily are avoided; two-way gateway intelligent induction control and vehicle operating information real-time tracking control are adopted, the complicated procedures that the gateway is opened and closed manually, a driver needs to get off to register the information and the like are avoided, a great amount of manpower and material resources are saved, and the automation of the access control management of vehicles entering in and out of the grain depot and the metering operation can be further embodied; and besides, the whole intelligent access control and metering process is monitored, the cheating phenomenon of workers can be prevented or video information can be rapidly called back for related operation in emergency.

The invention belongs to the new material alloy element analysis technology, and relates to an analysis method for determining titanium, vanadium, tungsten, manganese and silicon in a K25 chromium-base high temperature alloy. The analysis steps comprise: weighing a sample; preparing a sample solution; preparing a calibration solution; measuring concentrations of titanium, vanadium, tungsten, manganese and silicon in the sample solution; and calculating the measurement result to obtain contents of titanium, vanadium, tungsten, manganese and silicon. According to the present invention, the ICP-AES method for determining contents of titanium, vanadium, tungsten, manganese and silicon in the K25 chromium-base high temperature alloy is provided, wherein the method has characteristics of high analysis sensitivity, simple operation, short analysis period, high efficiency and wide application prospect, can meet engineering application of the high temperature alloy, can meet requirements of scientific research and production on material quality control, and further has characteristics of product scrap rate reduction, development saving and production cost saving.

The invention discloses a load balancing method applied to a three-layer CDN network. The three-layer CDN network comprises a DNS layer, a Proxy layer and a Cache layer. The method comprises the following steps of: analyzing a domain name of a requesting party in the DNS layer; grouping URL requests in the Proxy layer according to URL contents; and orienting the grouped URL requests to a corresponding server in the Cache layer. The invention also discloses a load balancing system applied to the three-layer network. The system comprises a receiving and analyzing module, a URL grouping module and an orientating module. By adopting the load balancing method and the load balancing system of the invention, each of the URL contents is cached only once so as to save disc storage space greatly; moreover, the utilization rate of a CPU can be improved by fully utilizing a plurality of Cache instances.

The invention discloses a novel method for separating and purifying sucralose-6-ethyl ester, which is realized in a way that: preparing a water solution from crude sucralose-6-ethyl ester obtained by chlorinating sucrose-6-ester; constituting a serial counter-current extraction process by utilizing a plurality of annular space type centrifugal extractors, and separating and extracting by using ethyl acetate or butyl acetate as the extraction solvent; condensing the extract to be dry; and crystallizing and recrystallizing to obtain the sucralose-6-ethyl ester crystal. The invention carries out the continuous extraction by using the annular space type centrifugal extractors, thereby greatly reducing the use amount of the organic solvent for extraction and also reducing the loss of the organic solvent and the environmental pollution. The extraction rate of the product is enhanced from 90% to 98%, thereby obviously reducing the product loss in the separation process. Meanwhile, the technique can obviously reduce the labor intensity of the operational workers and improve the working environment of the workers.

The invention relates to a saltless dyeing method for a fabric modified by a cationic polymer. The method comprises the steps that the fabric is placed in a pretreatment solution to be pretreated; pretreatment includes steeping or padding, baking, cold washing and drying are performed to obtain a modified fabric; the modified fabric is placed into a dye bath, and a dip dyeing technology or padding-rolling-steaming technology is adopted for dyeing to obtain the saltless dyeing fabric. The method is easy and convenient to implement and environmentally friendly; meanwhile, a polymer modifier is low in consumption, easy to recycle and capable of meeting the requirements of energy conservation, emission reduction and environmental friendliness of a dyeing and printing enterprise; the traditional salt dyeing effect can be achieved without any inorganic salt or leveling agent, and the requirements for leveling property and color fastness are met.

The invention belongs to a nickel-chromium-aluminum coated diatomite element analysis technology, and relates to a method for determining chromium content and aluminum content in nickel-chromium-aluminum coated diatomite, wherein microwave sample digestion and inductively coupled plasma atomic emission spectroscopy are adopted to determine the chromium content and the aluminum content in the nickel-chromium-aluminum coated diatomite. According to the method, 5-10 mL of hydrochloric acid, 1-5 mL of nitric acid and 5-10 drops of hydrofluoric acid are adopted to treat (metal-inorganic non-metal powder) nickel-chromium-aluminum coated diatomite, such that problems of large use amounts of reagents for dissolving the sample, difficult dissolving of the sample, incomplete dissolving of the sample, and the like in the prior art are solved. With the present invention, spectrum analysis is performed to find the best analysis line so as to overcome interference of the major element nickel in the nickel-chrome-aluminum coated diatomite and improve measurement accuracy; the study results show that the established method for determining the chromium content and the aluminum content in the nickel-chromium-aluminum coated diatomite is accurate and reliable, and can meet requirements of research and production; and the method of the present invention has characteristics of rapidness, easy operation, manpower saving and material resource saving.

The invention discloses a method for extracting ecdysone from common cyanotis roots and the ecdysone thereof, belonging to the technical field of the extraction and the separation of effective components of plants. The method comprises the following steps of: decocting 0.5-1kg of common cyanotis roots by 10L of water, or extracting by using 1-95 percent methanol or ethanol, and the ratio of the using amount of the methanol or the ethanol to the common cyanotis roots is 5L-10L to 1kg; filtering, decompressing and concentrating to obtain liquid with the relative density of 1.05-1.20; regulating a pH value to 6-10 by using alkali; then extracting by a mixed solvent with normal butanol and ethyl acetate, wherein the ratio of the normal butanol and the ethyl acetate is 4:6-0.5:9.5; washing, decompressing and concentrating to obtain a fluid extract with the relative density of 1.2-1.3; adding 50-95 percent methanol or ethanol for dissolving and dilution, passig through overhigh alkali type anion exchange resin, and eluting, concentrating and drying in a decompressing way to obtain the ecdysone. Compared with a conventional method, the method enhances the yield by 1.16-1.38 percent.

The invention belongs to the field of paper pulp manufacturing and particularly relates to a method for utilizing a bamboo raw material to produce high-polymerization-degree dissolving pulp. The method is characterized by comprising the steps of material preparation, prehydrolysis, hot alkali extraction, alkaline method cooking, oxygen bleaching, bleaching and acid treatment and the like, and the clean pulping method for the high-polymerization-degree bamboo pulp solves the problems that existing production raw materials for the high-polymerization-degree dissolving pulp is sufficient, the technology falls behind, and pollution is severe, and the like. The polymerization degree of the manufactured bleached bamboo pulp is over 2000, the whiteness is over (90+/-2)%ISO, a-cellulose is over 96%, the ash content is below 0.1%, the Fe ion is below 20ppm, S18 is below 3%, S10 is below 4%, and (S10-S18) is below 2%.

The invention discloses a sustained release vulcanizing agent, a preparation method thereof, and a method of using the sustained release vulcanizing agent to remove heavy metals and arsenic from an acidic solution. A sulfur source and a surfactant are added into a solution containing Fe<2+>, Mn<2+>, and Zn<2+> to carry out reactions to obtain the nano-millimeter metal sulfide sol sustained release vulcanizing agent, which can slowly release S<2-> under a strongly acidic condition; the surface activity is guaranteed, at the same time, the utilization rate of S<2-> is improved; the vulcanizing agent is used to remove heavy metals and arsenic from an acidic solution and has the advantages of high removal efficiency, low using amount, and low hydrogen sulfide release amount; the problems that the using amount of a conventional vulcanizing agent is large, the utilization rate is low, and the H2S pollution is severe can be solved, and the method for removing heavy metals and arsenic from an acidic solution has the advantages of simple process and convenient operation and is suitable for industrial production.

The invention relates to concrete, and specifically relates to C35 low-gel-material self-compacting concrete and a preparation method of the concrete. The scheme of the invention is that the C35 low-gel-material self-compacting concrete comprises the following raw materials, by mass: 180-300 kg/m3 of cement, 30-80 kg/m3 of coal ash, 220-640 kg/m3 of fine river sand, 300-600 kg/m3 of machine-made sand, 600-1100 kg/m3 of cobblestone with a diameter of 5-25 mm, 5-20 kg/m3 of a polycarboxylic acid water reducer, 0.01-0.05 kg/m3 of a thickening agent, and 4-8 kg/m3 of an early strength agent. The C35 low-gel-material self-compacting concrete provided in the invention is less in use amount of materials, has better fluidity and early strength, and plays an important part in accelerating popularization of application of C35 self-compacting concrete.

The invention provides an enzyme method ensilage method of corn straws. An enzyme preparation composition containing assistants is used to process small segments of corn straws, the processed corn straws are triturated, and a combined fermentation bacterium is added to carry out accumulative fermentation, so the content of utilizable nutritional substances of a yellow ensilage feed is improved, and the palatability is improved. An aflatoxin B1 clastic enzyme and denitrifying bacteria are simultaneously introduced, so harmful substances comprising aflatoxin, nitrite and the like in the yellow ensilage process and the yellow ensilage feed are eliminated, and the safety of each of the corn straws and the yellow ensilage feed is improved.

The invention discloses a vulcanized rubber reclaimed rubber and a preparation method thereof, and belongs to the technical field of rubber. A regenerant is provided, can selectively break sulfur-sulfur bonds in vulcanized rubber at a low temperature, and is small in dosage and low in cost, and the molecular weight of the obtained reclaimed rubber is high. The preparation method comprises the following steps: mixing vulcanized rubber with the regenerant, swelling through a solvent, and keeping the decrosslinking temperature to make the regenerant permeate into a vulcanized rubber network for decrosslinking. A good selective chain breaking effect can be achieved on sulfur-sulfur bonds in waste rubber, large-amplitude chain breaking of the crosslinked network at the relatively low temperature is achieved, the cost of the regenerant is low, and the obtained regenerated rubber is high in sol content and molecular weight.

A disclosed preparation method of a catalyst for removing tritium in tritium-containing air comprises: (1) adding aluminium isopropoxide into distilled water and stirring for hydrolysis; (2) adding a peptizing agent to enable the hydrolysis solution to be colloidal, and performing stirring refluxing to obtain an aluminium oxide sol; (3) using honeycomb ceramic as a catalyst matrix and immersing in a diluted nitric acid solution, and then taking out, cleaning and baking; (4) mixing active aluminium oxide powder and the aluminium oxide sol, and performing ball milling to form a slurry; (5) uniformly coating the catalyst matrix with the slurry, and then baking and weighing; (6) repeating the step (5) until the weight gain of the catalyst matrix is 12%-20%; (7) adding diluted nitric acid into a noble metal solution, and mixing with stirring; and (8) immersing the catalyst matrix in the mixed solution to enable the catalyst matrix to absorb the mixed solution to reach a saturation state, and then roasting, so as to obtain the catalyst. The preparation method helps to substantially improve the processing capacity of the catalyst on gases without increasing the gas resistance of the tritium-removal system.

The invention relates to a method for preparing functional carbon fiber composite electrothermal paper. The method comprises the following steps of: (1) preparing functional carbon fibers; (2) preparing papermaking slurry; (3) making paper; and (4) performing post-treatment. The functional carbon fibers are prepared by carrying a functional body on the surface of an activated carbon fiber; wet papermaking is executed, so that functionalization of the functional carbon fiber composite electrothermal paper is realized; compared with the conventional functionalization method for the carbon fiber composite electrothermal paper, the method has the advantages that the problems of large using amount of functional powder bodies and high waste during preparation are solved; during preparation, the problems of large using amount of wet papermaking technological auxiliaries and severe water pollution are solved; the method is environment-friendly and energy-saving; and the prepared functional carbon fiber composite electrothermal paper has the advantages of high functionalization efficiency, obvious effect, durability and stability.

The invention discloses a PCB two-phase tin stripping method. In the first phase of tin stripping, a SnCl4-HCl system is adopted; and in the second phase, a HNO3-Fe(NO3)3 system is adopted. A specificquantity of tin on the surface of a tin plated board is stripped by first-phase tin stripping treatment; and then, through second-phase tin stripping, the remained tin on the surface of the PCB is stripped to obtain a bright copper plate. After first-phase tin stripping, liquid is pumped in a diaphragm electrolysis system for diaphragm electrodeposition to extract tin and to regenerate a tin stripping agent. Through two-phase tin stripping, the tin stripping speed of the PCB can be guaranteed, tin in the liquid after first-phase tin stripping can be recovered online, and meanwhile, the SnCl4-HCl tin stripping agent can be regenerated. Through second-phase tin stripping by the HNO3-Fe(NO3)3 system, the remained tin on the surface of the PCB can be totally stripped, and the smoothness of the copper substrate can be maintained. The method can effectively solve the problems of high tin stripping waste water quantity and difficult resourceful recycling in a traditional nitric acid system.

The method of the present disclosure includes: acquiring a pair of operation control points including an operation start point and an operation end point; calculating a vector from the operation start point to the operation end point; determining an image deforming area, where the image deforming area consists of a contracted sub-area and a stretched sub-area; determining a pixel step value of each pixel in the image deforming area, where a pixel step value of a pixel in the contracted sub-area is greater than a preset step value threshold, and a pixel step value of a pixel in the stretched sub-area is less than the step value threshold; generating an offset parameter relative to the image according to a vector direction of the vector and the pixel step value of the pixel; and performing interpolation calculation on the offset parameter, to obtain a stretched image.

The invention discloses a preparation method of an oxidized ore collecting agent and an application thereof. The oxidized ore collecting agent is prepared by mixing the following raw materials: 50-70% by mass of oleic acid, 20-30% by mass of sodium hydroxide, 20-30% by mass of water, 3-5% by mass of carboxymethylcellulose and 5-10% by mass of glycerol monostearate. The preparation method comprises the specific steps of: firstly, mixing oleic acid with sodium hydroxide; adding water to uniformly stir and heating the mixture to 50-60 DEG C; then adding carboxymethylcellulose to continuously stir till the mixture is emulsified to milk white paste; and further blending glycerol monostearate and uniformly stirring the mixture. The oxidized ore collecting agent disclosed by the invention can be applied to floating oxidized ores such as scheelite, lead-zinc oxide ores, rare earth ores and fluorite mine. Compared with other fatty acid collecting agents, the collecting agent shows relatively high selectivity on scheelite flotation. The WO3 grade and recovery rate of the floated tungsten concentrate are improved to a certain extent. The oxidized ore collecting agent disclosed by the invention has the characteristics of being simple to prepare, good in stability, good in dispersibility, high in selectivity and the like, and is suitable for being taken as a floating collecting agent for oxidized ores, in particular scheelite.

The invention discloses a method for preparation of a compound shown in formula (II). The method mainly includes two steps: an amination reaction and introduction of an amino protection group. The invention also discloses a method for preparation of brinzolamide through the compound in formula (II), and the method mainly consists of: sulfamation of the compound in formula (II) and amino protection group removal of the sulfamation product. According to the method, a protection group is first introduced at site C-3, then a sulfonamide group is introduced at site C-6, and finally the protection group at site C-3 is removed, so that the synthesis operations of brinzolamide become easier, the security risk and the cost are lower, and the total yield of brinzolamide is significantly enhanced. Therefore, the feasibility of large-scale industrial production and the competitive advantage of the product in the market are improved.

The invention discloses original development quality ceftazidime and a medicine preparation thereof. The third-generation cephalosporin antibiotics active ester midbody key technology and industrialization obtains the second prize of National Scientific and Technological Progress Award. The cephalosporin antibiotics active ester belongs to a key factor for influencing the internal quality of the cephalosporin. A preparation method comprises the following steps that (a) mixed solvents are added into ceftazidime side chain acid, dibenzothiazyl disulfide, aniline and 2-picoline; triethyl phosphate is dripped for reaction; (b) a coarse product is refined to obtain ceftazidime side chain acid active ester, and the first mother liquid is recovered; (c) the material is added into a mixed solvent for neutralizing 7-APCA; triethylamine is dripped; the temperature reduction is performed for crystal separation and filtering to obtain ceftazidime tert-butyl ester; the second mother liquid is recovered; (d) the ceftazidime tert-butyl ester is subjected to hydrolysis and purification, and then, the ceftazidime is obtained. The original development quality ceftazidime has the advantages that high-toxicity triphenylphosphine is not used; waste liquid and waste slag can be sufficiently recovered and reutilized; the method is safe; the cost is low; the yield is high; the industrial production is facilitated.

The invention provides a production process of an organic fertilizer special for paddy rice and belongs to production processes of organic fertilizers. The organic fertilizer is prepared by mixing rice straws, water hyacinths, shells and animal faces, fermenting the mixture by using biological bacteria at first, then treating by adding earthworms, and finally adding neem tree branches and blumea balsamifera to perform fermentation. According to the production process provided by the invention, the rice straws are adopted as the main raw material for the organic fertilizer special for the paddy rice, and are subjected to a series of treatments by using the biological bacteria and the earthworms to ensure that the elements in the rice straws are converted into chemical state elements which can be easily absorbed by plants, and meanwhile, the elements and content thereof in the rice straws are similar to the elements and demands thereof required by the growth of the paddy rice, so that the organic fertilizer can meet the requirements for the growth of the paddy rice; and meanwhile, the produced organic fertilizer special for the paddy rice has an effect of inhibiting diseases and pests, the organic matter particles digested by the earthworms are tiny, and the surface areas of the organic matter particles are improved by more than 100 times than those before digestion, so that more opportunities for soil to be in contact with the air can be provided, the problem of land hardening is fundamentally solved, and continuous paddy rice planting can be performed.

The invention discloses alkali excitation fly ash dry mixing heat insulation plate bonding mortar and a preparation method thereof. The alkali excitation fly ash dry mixing heat insulation plate bonding mortar is prepared from the following ingredients in parts by weight: 20 to 30 parts of fly ash, 0 to 10 parts of cement, 0 to 10 parts of heavy calcium powder, 40 to 60 parts of aggregate, 0.8 to 1.5 parts of redispersible latex powder, 0.02 to 0.05 part of water-retaining agents, 0.02 to 0.04 part of wood fiber, 5 to 10 parts of sodium silicate, 1.2 to 1.5 parts of sodium hydroxide, 0.01 to 0.03 part of anti-cracking fiber and 0.3 to 0.6 parts of plasticizing agents. The dry mixing heat insulation plate bonding mortar provided by the invention has the advnatages that through the integral utilization of an alkali excitation principle and a polymer enhancing and toughening mechanism, the problems of great cement consumption, long coagulation time, slow intensity increase, low intensity, unstable product quality and the like of the conventional heat insulation plate bonding mortar can be solved; in addition, fly ash resources can be greatly utilized; the utilization of non-renewable resources such as cement can be reduced; the advantages of energy saving and environment protection are achieved.

The invention discloses a flotation separation technology for a high-sulfur low-grade lead-zinc ore. The technology is provided against the characteristics of low galena and sphalerite content and extremely high pyrite content of the high-sulfur and low-grade lead-zinc ore and serious unbalance of the proportions of the lead-zinc mineral content and the pyrite mineral content in the ore. The principle flow of floatability of sulfur and the like is adopted in the lead-zinc-sulfur flotation separation process flow design to make a part of pyrite with good floatability preferentially float upwards together with galena, lead-sulfur separation is carried out, a part of pyrite with poor floatability and sphalerite in tailings are subjected to flotation, and then zinc-sulfur separation is carriedout. The technology avoids strong pressure and strong tension of a large amount of pyrite, reduces the use amounts of medicaments and also reduces the loss of lead-zinc ore in pyrite. Compared with atraditional lead-zinc-sulfur full-priority flotation process, a lead-sulfur mixed separation-lead-sulfur separation-tailing zinc separation process, a priority lead separation-tailing zinc-sulfur mixed separation-zinc-sulfur separation process or other derived processes, the technology of the invention has the advantages of good index, stable process, low medicament consumption and the like.

The invention discloses a double-headed eyewash device which comprises an eyebath basin, a water inlet pipe, a water outlet pipe, a support rod, a valve, a sprayer and a spray cover, wherein the top end of the water outlet pipe is communicated with the bottom of the eyebath basin; the bottom of the water outlet pipe is fixedly mounted on the ground; the support rod is arranged in the water outlet pipe; the bottom of the support rod is fixedly mounted on the ground; the top surface of the support rod is fixedly communicated with the bottom surface of the sprayer; the sprayer comprises a spray pipe and two spray heads; the spray pipe is a U-shaped pipe with an upward opening; the spray heads are respectively mounted at both ends of the spray pipe; the spray pipe and the spray heads are internal shrinkage structures from bottom up; detachable spray covers are arranged on the spray heads; a water inlet valve is mounted on the water inlet pipe. As the double-headed eyewash device adopts the double spray heads internally shrunk at reasonable angles and a simple-to-use structure, the problems that the conventional eyewash device has a single spray head, cannot effectively and rapidly wash eyes, is cumbersome to mount and produce, and has high consumption of materials are solved.

The invention provides a production process for a special organic fertilizer used for sweet potato. The production process for the special organic fertilizer used for the sweet potato comprises the following steps: mixing of fresh sweet potato vines, shells and animal manure; addition of biological bacteria for treatment; then addition of earthworms for treatment; fermentation with neem branches and Blumea balsamifera. According to the invention, the fresh sweet potato vines are used as a main raw material for the special organic fertilizer used for the sweet potato; after a series of treatment of the fresh sweet potato vines by biological bacteria, earthworms and the like, each element in the fresh sweet potato vines is converted into a combined state which is easy to absorb by plants; the elements and contents thereof are similar to elements and demanded element quantities necessary for growth of the sweet potato, so the growth needs of the sweet potato can be met; after organic matters in the invention undergo two fermentation procedures and one earthworm digestion procedure, formed organic matters have high quality, can be easily dissolved in soil and are easy to absorb by plants.

The invention provides a drug carrying microsphere with a tumor chemoradiotherapy synergistic sensitization effect and a preparation method thereof. The method comprises the following steps: carryingout amidation reaction on a polyacrylic acid PAA and polyethylene glycol PEG with two end amination under action of a first activating agent to obtain a PAA-PEG block polymer; carrying out esterification reaction on the PAA-PEG block polymer and 1-ethoxy-2-methyl-5-nitroimidazole MN under the action of a second activating agent to obtain a MN-PAA-PEG polymer microsphere; and carrying out self-assembly on the MN-PAA-PEG polymer and doxorubicin DOX to obtain a doxorubicin-loaded DOX/MN-PAA-PEG microsphere. The drug carrying microsphere can be obtained only through three steps of an acylation reaction, an esterification reaction and self-assembly, the method has characteristics of a simple process, mild reaction conditions and easiness in operation.