294 results about "Elutriation" patented technology

A vascular stent comprising a drug-eluting outer layer of a porous sputtered columnar metal having each column capped with a biocompatible carbon-containing material is described. This is done by placing the stent over a close-fitting mandrel and rotating the assembly in a sputter flux. The result is a coating that is evenly distributed over the outward-facing side of the stent's wire mesh while preventing the sputtered columnar coating from reaching the inward facing side where a smooth hemocompatible surface is required. The stent is then removed from the mandrel, exposing all surfaces, and finally coated with a layer of carbon such as amorphous carbon or diamond-like carbon. The carbonaceous coating enhances biocompatibility without preventing elutriation of a therapeutic drug provided in the porosity formed between the columnar structures. The result is a stent that is adapted to both the hemodynamic and the immune response requirements of its vascular environment.

With the coupling of an external field and aeration (or a flow of another gas), nanoparticles can be smoothly and vigorously fluidized. Multiple external fields and/or pre-treatment may be employed with the fluidizing gas: sieving, magnetic assistance, vibration, acoustic/sound or rotational/centrifugal forces. Any of these forces, either alone or in combination, when coupled with a fluidizing medium, provide excellent means for achieving homogenous nanofluidization. The additional force(s) help to break channels as well as provide enough energy to disrupt the strong interparticle forces, thereby establishing an advantageous agglomerate size distribution. Enhanced fluidization is reflected by at least one of the following performance-related attributes: reduced levels of bubbles within the fluidized system, reduced gas bypass relative to the fluidized bed, smooth fluidization behavior, reduced elutriation, a high level of bed expansion, reduced gas velocity levels to achieve desired fluidization performance, and/or enhanced control of agglomerate size/distribution. The fluidized nanoparticles may be coated, surface-treated and/or surface-modified in the fluidized state. In addition, the fluidized nanoparticles may participate in a reaction, either as a reactant or a catalyst, while in the fluidized state.

The invention discloses a method for resource recovery and classification utilization of urban domestic wastes, which at least comprises the following steps of: a magnetic separation step, a waste cutting step, a elutriation flotation step, a waste extrusion dehydration step, an anaerobic treatment step and a sludge deposition concentration step; scrap iron is separated by the magnetic separationstep for the recovery and utilization of the scrap iron; anaerobic organic matter is crushed by the waste cutting step; pasty organic matter and block non-anaerobic wastes are thoroughly separated bythe elutriation flotation step so as to allow the pasty anaerobic organic matter to enter a biogas generation pool or tank for an anaerobic reaction and to allow the clean non-anaerobic wastes to be extruded, dehydrated and dried for individual treatment, and the waste decrement is above 90%; after elutriation, the left 10% non-anaerobic wastes are prepared into fuel oil by a cracking reaction; or are recycled through screening with no screening difficulty being caused by dust and organic matter containing in the wastes; or are delivered into a gasifier for fuel gas production, which preventsthe energy consumption of water-containing organic matter during waste incineration treatment, and greatly increases the thermal efficiency of waste treatment.

The invention discloses an ultrathin metallic nickel nanosheet. The size of the ultrathin metallic nickel nanosheet is that the thickness ranges from 2 nanometers to 5 nanometers, the length ranges from 100 nanometers to 300 nanometers, and the width ranges from 50 nanometers to 300 nanometers. The invention further discloses an electrode material with the surface provided with an ultrathin metallic nickel nanosheet array. The electrode material comprises a porous conductive substrate and the ultrathin metallic nickel nanosheet array which grows on the substrate and is perpendicular to the porous conductive substrate. The invention further discloses an electrode material with the surface provided with a metallic nickel nanosheet assembling body. The three materials mentioned above can be manufactured through two steps of a hydrothermal synthesis method. The materials are large in specific surface area, high in stability, excellent in electro-catalytic property and capable of being used as an anode material of a hydrazine hydrate oxygenated fuel battery and a cathode material of electrolyzed elutriation hydrogen.

The invention discloses a preparation method of high-quality rifampicin, solving the problem that the traditional preparation method has the defects such as unfavorable product quality and high cost; the preparation method comprises the operational steps: S-BA liquid is salified by alkalescence sodium bicarbonate during a salification reaction; S is separated out by acetate acid before a cyclization reaction; then, dihydroxy is added for a reaction to obtain oxazine; after the reaction is finished, DMF is recovered by a molecular distillation method and then dissolved by other hydrophilic solvents; oxazine is separated out by an elutriation method; after a hydrolysis reaction and a condensation reaction are finished, an azeotropic distillation method is adopted to recover un-reacted side chains; pH is adjusted and temperature is lowered so that crystals are separated to obtain the crude products of rifampicin; and then the crude products are refined to obtain the high-quality rifampicin. Compared with the existing preparation technique, the preparation method significantly improves the product purity, reduces the production cost, controls the overall quantity of impurities to be lower than 1.5 percent, reduces two thirds of the general consumption of raw materials and more than a half of the usage of 1-methyl-4-aminopyrazine which is a valuable raw material, and eliminates the environmental pollution caused by strong acid and alkali.

The invention discloses a targeted polypeptide capable of being specifically combined with tumors, particularly a targeted peptide capable of being specifically combined with liver cancer tissues and application thereof in diagnosis and treatment of liver cancer. The liver cancer targeted peptide is preferably HCC-47 of which the amino acid sequence is SQDIRTWNGTRS; and the liver cancer targeted peptide is specifically combined with the liver cancer tissues, and can not be specifically combined with cervical carcinoma cells Hela, mammary cancer cells MDA-MB231, kidney cancer cells CRL-1932 and lung cancer cells A549. The polypeptide is obtained by in-vitro biological elutriation by combining a bacteriophage display library and a living body cross sectioning technique. The polypeptide can be used in a molecular imaging preparation for early diagnosis of liver cancer. The polypeptide can also be used in targeted modification and preparation of drugs for treating liver cancer. The polypeptide can also be used for targeted modification on drug transport carriers, thereby providing a new way for diagnosing or treating patients with liver cancer.

The present invention provides compositions and methods for generating and cryopreserving dendritic cells with superior functionality in producing stronger signals to T cells, resulting in a more potent DC-based anti-tumor vaccine. The present invention includes mature, antigen loaded DCs activated by Toll-like receptor agonists that induce clinically effective immune responses, preferably when used earlier in the disease process. The DCs of the present invention produce desirable levels of cytokines and chemokines, and further have the capacity to induce apoptosis of tumor cells. The cells can be cryopreserved and thawed for later use, thereby reducing the need for repeated pheresis and elutriation processes during vaccine production. These methods can also be utilized to directly target molecules involved in carcinogenetic signaling pathways and cancer stem cells.

The invention relates to the field of fermented milks, in particular to a fermented milk drink fortified with calcium and a production method thereof. 100 parts by weight of the fermented milk drink fortified with calcium contains 24-80 parts of milk, 0.0025-0.005 part of lactic acid bacteria fermenting agent, 0.4-1.0 part of stabilizer, 0.1-0.7 part of acidity regulator, 0.05-0.13 part of calcium ion and the balance of water, wherein the stabilizer comprises a thickener, and the thickener comprises not less than 0.3 part of low-viscosity sodium carboxymethylcellulose. The product has smooth mouth feel during drinking, not only has smooth mouth feel of milk, but also has the faint scent of fermented milk. The fermented milk drink fortified with calcium has no elutriation, no delamination and no serious fat separation during the six-month quality guarantee period at normal temperature, the problems of protein flocculation and calcium precipitation caused by unstable protein in the fermented milk drink fortified with calcium are well solved, and the obtained product has good stability.

The invention discloses a preparation method for black fungus beverage (including the pulp type and the pulp-less type). The preparation method comprises the following steps that: (1) dried or fresh black fungus is cleaned with water, kept away from impurities and soaked, or the black fungus is ground into powders; (2) the black fungus or the black fungus powder is boiled; (3) the black fungus or the black fungus powder is crushed and ground into slurry; (4) the black fungus or the black fungus powder is filtrated, and the filtrate is reserved for subsequent steps; (5) the filter residue is broken into pieces and combined with the filtrate, to obtain the extract; (6) the extract is flavored; (7) the extract is homogenized; (8) the extract is bottled or flash pasteurized and sterilely filled or sterilized under high heat and pressure. In the invention, the optimal leaching condition of black fungus is determined according to such factors as temperature, time and the ratio of the materials to water, and the adding quantity of honey, stabilizer, xylitol and white sugar are also determined in the way alike; the prepared beverage preserves the effective components of the black fungus, and has the advantages of rich nutrition, mellow mouth feeling, strong flavor, high stability and good fluidity, and no such phenomena as precipitation and elutriation are found after being observed in a static state at constant temperature for a month and at normal temperature for 12 months.

The invention discloses set yogurt and a preparation process thereof, and the formula of the yogurt comprises raw milk, white granulated sugar, modified starch, gelatin, gelatin type lactoalbumin, dilute cream, streptococcus thermophilus, lactobacillus bulgaricus and bifidobacteria. The preparation process comprises the following process steps: material preparation, preheating, homogenization, sterilization, cooling, inoculation, fermentation, cooling, stirring, secondary homogenization and filling. Compared with the traditional manufacturing process, the process is simpler, easy to operate and low in cost; a product is more lubricating and delicate, and good in mouthfeel, the resistance to mechanical force of a finished product is enhanced, the product is less prone to damages during the logistics transportation, elutriation is avoided during the guarantee period, and the product can be re-condensed by virtue of re-cooling after heating up for dissolution.

The invention relates to a purple pottery soil ingredient and a preparing method thereof. The purple pottery soil ingredient is prepared from, by mass, 50% of red soil, 10% of yellow soil, 10% of green soil, 15% of purple soil and 15% of white soil. The preparing method includes the steps of material selecting, material fermenting, material matching, material smashing, elutriation and slurry filtering, mud filtering and mud fermenting. The prepared purple pottery soil ingredient is high in plasticity, capable of ensuring plasticity of throwing forming, improving high-temperature roasting performance and increasing product percent of pass, and a product can be stably controlled to show traditional red purple of Jianshui purple pottery.

The invention relates to a preparation method of 2,3,4,5-tetrafluorobenzoyl chloride. The preparation method comprises the following steps: carrying out a condensation reaction on raw materials of 3,4,5,6-tetrafluorophthalic anhydride and methylamine; fluorinating; hydrolyzing; decarboxylating; and chlorizing. An aqueous solution of methylamine is adopted as the raw material to substitute aniline which has a high price in the invention, so the raw material cost is obviously reduced. A solvent used in the fluorination reaction is added ahead of time, so a product can be distilled off together with the solvent after ending the fluorination reaction without separating a condensation product, and a fluorinated product can be obtained through elutriation. A byproduct potassium chloride can be recovered, so product benefits are improved, and the environmental pollution is obviously reduced, thereby the preparation method is suitable for industrialized production.

A medicine combination has the function of resisting lung cancer. The combination is mixed with rhizoma paridis saponin and milk vetch root amylose according to the weight ratio of 3 to 1. The rhizoma paridis is extracted by alcohol and then the rhizoma paridis extract is obtained through gradient elutriation of macroporous absorption resin alcohol; the milk vetch root is extracted by water and then the protein is settled and removed to get the milk vetch root amylose; the two extracts are mixed and the medicine is made. The MTT activities experiment in vitro with the MTT method has proven that the medicine combination can obviously control the growth of various lung cancer cells such as LA795 lung adenocarcinoma cell and the IC₅₀ can reach 26.73 ug/ml; the experiment of mouse with the lung cancer tumor has represented that the tumor constraint rate can reach 55.63 percent; in this way, lung transfer of hypodermic transplanted tumor of the mouse with the lung cancer tumor can be obviously controlled and the tumor cells can be brought to death; moreover, spleen index and thymus index can be promoted and the medicine is innocuous and has no side effect. In addition, compared with the raw materials, the medicine combination has high activity and clear function; moreover, the medicine can be made into different types.

The invention discloses a flotation separation method for copper in a waste mobile phone circuit board. The flotation separation method comprises the steps that 1, crushing of the waste mobile phone circuit board is conducted, specifically, the circuit board of a component with a surface component disassembled is crushed with the particle size being 0.45 mm or less, so that metal and nonmetal are completely dissociated; flotation separation of the metal and the nonmetal in a crushed product is conducted, specifically, the crushed product is prepared into slurry, the hydrophilicity difference of the metal and the nonmetal is utilized, an appropriate quantity of foaming agents is added to conduct reverse flotation, and a metal enriched product is obtained; and flotation of copper in the metal enriched product is conducted, specifically, the metal enriched product subjected to ball milling with the particle size being 0.15 mm or less is prepared into slurry, factors such as the slurry concentration, the stirring speed, the aeration quantity and the magnitude of the reagent dosage which affect flotation are adjusted through change of the surface properties of all the matters under the action of flotation reagents, direct flotation is adopted, a copper flotation product is obtained and subjected to elutriation and drying, and the copper is obtained.

The invention relates to a clean producing craft for extracting L-isoleucine from fermentation liquor in the field of biology chemical technology. It comprises: preparing for the L-isoleucine, regenerating ion exchange column, cycle using the regenerated ammonia sulfate waste liquid; the L-isoleucine preparing course comprises: heat filtering the fermentation liquor, adjusting acid, flocculation filtering, using strong acidic hydrion exchange resin column to do negative pressure to the elutriation liquid, washing it after saturation adsorption to expel the foreign substance, adding ammonia with ammonium waste water to do elutriation, using strong acidic hydrion exchange resin column to do negative pressure to the L-isoleucine again, washing it after saturation adsorption to expel the foreign substance, adding ammonia to do elutriation to obtain the L-isoleucine product. The ion exchange column after elutriating uses sulphuric acid to regenerate; part of the ammonia sulfate waste fluid is used in the bulk of the ferment customs agency; the other part is as the eluent of first ion exchange after adding ammonia, which forms a closed circuit.

The invention discloses a processing method of sesame chili biscuits, comprising: cutting the dry chili into segments of 1.5-2.5cm to form dry chili rings; soaking 50 dry chili rings in the fresh water for 1-3 hour, meanwhile water elutriation being performed for 2-3 times, then removing the beads on the surfaces of the chili rings by centrifugation in a dewaterer to form swelled chili rings for standby; uniformly mixing sesame kernels 100-120 part, glutinous rice powder 8-12 part, corn starch 6-10 part and salt 3-5 part to obtain the mixture for standby; rolling the swelled chili rings and the mixture in a cylinder container for 5-8 minute and filling the chili rings with the mixture and fixing the filled chili rings, then screening the sesames shattered outside to obtain sesame chili cylinders; frying the sesame chili cylinders in the edible vegetable oil until the sesame chili cylinders are crisp, finally obtaining the sesame chili biscuits. The sesame chili biscuits are hot and crisp and the taste is very gentle.

The invention discloses a purification method for artificial diamond. The purification method comprises the following concrete steps: 1, mechanical crushing: mechanically crushing an artificial diamond synthetic rod into fine grains; 2, sintering and oxidation: removing most graphite by using a gas phase oxidation process; 3, crushing and dissociation: recovering catalyst metal by using a magnetic process and carrying out shaking-table sorting of a part of pyrophyllite; 4, separation and purification: totally remove residual graphite by using a flotation process and removing residual pyrophyllite by using a water elutriation method; and 5, drying and sorting: carrying out drying and sorting to obtain artificial diamond of different grades. The purification method has the advantages that purification process is simplified; severe pollution of a strong acid solution used in traditional purification processes to environment is mitigated; environmental protection is realized; and generation of harmful gas in the process of purification is reduced, so the working environment of operators is improved and the health of the workers is guaranteed.

The invention relates to the field of dairy processing, and particularly relates to a high-fiber low-sugar brown active lactobacillus beverage and a preparation method of the High-fiber low-sugar brown active lactobacillus beverage. The High-fiber low-sugar brown active lactobacillus beverage comprises the following materials by weight percent:25%-50% of yoghourt, 0.3-1.0% of stabilizing agent, 0.1%-0.3% of acidity regulator,0.01%-0.05% of salt material, 3%-5% of sweet material, 3.5%-5% of dietary fiber, and the balance of water. In the invention, the dietary fiber with higher content is added in the existing brown active lactobacillus beverage for improving the extra value of the brown active lactobacillus beverage product; a high-sweetness sweetener is added for replacing quantitative sugar and is combined with small amount of sugar for use, and a product-stabilizing system is reasonably established, so that the aim of low sugar is realized. Therefore, the content of sugar of the product is reduced, the product has better flavor and mouthfeel, and the phenomena of elutriation, precipitation and delamination of the product are avoided.

The invention provides a folic acid production method for controlling the content of technical pteroic acid and is characterized in that the folic acid production method comprises the following processing steps of: a crude product production step of using an intermediate for the folic acid production to prepare a folic acid crude product; an acid dissolution step of dissolving the folic acid crude product in an acid dissolution elutriation container by using a dilute sulfuric acid solution with the concentration of 25%-35% and carrying out elutriation and press filtration on the dissolved folic acid crude product to obtain an acid extract; an alkali dissolution and refining step of carrying out alkali dissolution on the acid extract by using alkali lye to obtain an alkali dissolution filtrate and refining the alkali dissolution filtrate for salt formation by using dilute acid so as to obtain the folic acid finished product. By reducing the concentration of dilute sulfuric acid, folic acid (the content of impurity technical pteroic acid is less than or equal to 0.6%) which accords with the requirement of European pharmacopeia is produced, and the production cost of folic acid is reduced.

The invention is an automatic debris separation process for effecting air separation of fragmented materials, such as size-reduced fiber feedstocks derived from textile wastes. The process uses high-velocity air within an elutriation assembly to efficiently remove ferrous and non-ferrous metal debris from recyclable polymer fibers. In particular, the process may employ automatic process control strategies to vary airflow within the elutriation assembly in process-controlled response to measured metal contamination, thereby ensuring that post-separation metal contamination is maintained at or below an upper contamination limit.

The invention relates to a method for synthesizing pyroglutamic calcium glutamate with shells serving as calcium sources. Processing steps comprise shell pretreatment, synthesis, crystallization and drying. The method includes immersing the shells with 0.05M hydrochloric acid, drying, smashing and processing the shells with elutriation to obtain calcium shell powder, compounding pyroglutamic acid with the shell powder (the calciumcontent of calcium carbonate is calculated by 95%) according to a molar ratio of 2: (1.0-1.2), adding distilled water 20 to 25 times of the weight of the shell powder, stirring and heating the mixture to 55 DEG C to 60 DEG C, keeping the temperature for 1.5 to 2.0 hours, and performing cooling and suction filtration; performing pressure reduction and concentration on the obtained filtrate to enable the volume to be1/10, adding 95% of edible alcohol until the ethanol saturation degree is 90%, performing stirring, standing and filtering; and performing suction filtration, and drying the obtain crystals in a drying oven of 90 DEG C to obtain the pyroglutamic calcium glutamate product. According to the method, the process is simple, the product water solubility is good, various shells can be utilized highly, and the product can serve as calcium supplement, dietary supplement for improving the brain health level and the like.

The invention provides a returned sludge elutriation process of a biological sewage treatment system. A sludge return pump conveys a sludge mixture in a secondary sedimentation tank to a hydraulic cyclone separator; under the dynamic action of the sludge return pump, the hydraulic cyclone separator separates impurities such as large-density particles in returned sludge, and the separated low-density sludge mixture enters into a filtration screen through an overflow port in the upper end of the hydraulic cyclone separator; the filtration screen separates out substances such as large granular paper scraps, plant fibers and fur in the sludge mixture, and the screened returned sludge enters into a sludge activation tank so as to be subjected aeration activation treatment; the activated returned sludge enters into an aeration tank, active microbial populations in the returned sludge are increased, so that the sludge load in the aeration tank is improved, and thus the sewage treatment efficiency is improved; during the whole elutriation process, the sludge return pump is needed to lift only one time, facility required for the process can be simplified, the energy consumption can be reduced and the operating expense is reduced.

The invention discloses an energy-saving ore dressing method for treating fine grained magnetite. The energy-saving ore dressing method comprises the steps that iron ore is successively subjected to first-section grinding and grading, first-section low intensity magnetic separation, second-section grinding and grading, second-section low intensity magnetic separation, first-section elutriation magnetic separation, third-section grinding and grading, third-section low intensity magnetic separation and second-section elutriation magnetic separation, obtained first-section elutriation magnetic separation concentrate and second-section elutriation magnetic separation concentrate are combined into total concentrate, and all low intensity magnetic separation tailings are combined into a total tailing. According to the energy-saving ore dressing method for treating the fine grained magnetite, by adopting an elutriation magnetic separation technique, under the condition of the coarse grindingfineness, magnetic iron minerals after basic monomer separation are subjected to early recovery, the yield of iron ore concentrate after early recovery reaches 15-45%, the quantity of the subsequent ore needing to be subjected to fine grinding is reduced significantly, grinding energy consumption is saved, and energy consumption of an ore dressing technology of the energy-saving ore dressing method is reduced by more than 30% compared with energy consumption of an ore dressing technology in the prior art; and third-section low intensity magnetic concentrate is extracted by adopting the elutriation magnetic separation technique, the grinding fineness can be coarsened effectively, and the grade of the iron ore concentrate is improved by more than two percentage points.

The invention discloses a high-sulfur complex iron ore quality-improving and impurity-decreasing separation technology and belongs to the technical field of shaft furnace transforming construction. After complex ores are crushed, products undergo primary grinding; then low intensity magnetic separation is conducted on ore pulp to obtain low intensity concentrates and tailings; secondary grinding is conducted on the low intensity concentrates; staged low intensity magnetic separation is conducted on the ore pulp, and then elutriation is performed by an elutriation and magnetic separation machine to obtain iron concentrates and tailings; the tailings are concentrated and then are floated to obtain sulfur concentrates and tailings. The industrial prejudice of a 'floatation and then magnetic separation' process in existing ore separation is overcome, a 'magnetic separation, floatation and re-separation' process is adopted during desulfurization of high-sulfur complex iron ores, a variety of useful ores are recovered, the purposes of improving precision, decreasing sulfur and reducing energy consumption are achieved, and economic benefits are increased. The technical problems of large device corrosion, large floatation agent using amount and no sulfur recovery during desulfurization of the high-sulfur complex iron ores are solved.

The invention belongs to the technical field of peanut food additive and peanut beverage processing, and provides a composite emulsifying agent for peanut milk, which is formed by mixing isolated soybean protein, fatty acid monoglyceride, sucrose fatty acid ester, sorbitan fatty acid ester and sodium alga acid in a mass ratio of 1: 1: 1: 1: 1, wherein the mass percentage concentration of the composite emulsifying agent in the peanut milk is 0.05 to 0.15 percent. The invention also provides a method for preparing the peanut milk by adopting the emulsifying agent. The method comprises the following steps: low-temperature cold pressing, soaking, filtering and mixing, grinding, centrifugal separation, emulsifying agent addition, homogenizing, super-high temperature instant sterilization, canning and sealing, and high-temperature sterilization. The fat in the peanut milk prepared by adopting the composite emulsifying agent can be fully emulsified and dispersed, so the generation of a fat ring can be effectively controlled; and meanwhile the shelf life of the peanut milk can be prolonged, and adverse phenomena such as settling, elutriation, demixing and the like of the peanut milk during storage and transportation are prevented.

The invention discloses a device for elutriation and separation of sludge and treatment and reuse of sewage in a through channel. The device is characterized in that an elutriation and separation pool is arranged under a sludge receiving chute and comprises an elutriation and separation chamber and a sand settling chamber positioned below the elutriation and separation chamber; the elutriation and separation chamber is provided with a slag-dredging and pressing integration machine and a stirring device; the stirring device comprises a hollow transmission shaft, a rotary disc and blades; the hollow transmission shaft is positioned in the elutriation and separation chamber; the rotary disc and the blades are arranged on the hollow transmission shaft; a settled sand conveyor is arranged at the bottom of the sand settling chamber; and a mud absorbing pipe is arranged in the sand settling chamber, penetrates through the hollow transmission shaft and is then connected to a sludge treatment facility by a mud discharging pipe. The device disclosed by the invention has the advantages that the problems of overlarge water consumption, low separation efficiency, need of frequent maintenance for a circulating and lifting pump system and large occupied area of a sewage treatment device in the pretreatment of elutriation of sludge in the through channel are solved; and compared with a traditional push-flow separation type separating device, the device disclosed by the invention has the characteristic that the water is saved by more than one time, and the occupied area is saved by about 1/2.