969 results about "Chemical residue" patented technology

A composition for removal of chemical residues from metal or dielectric surfaces or for chemical mechanical polishing of a copper or aluminum surface is an aqueous solution with a pH between about 3.5 and about 7. The composition contains a monofunctional, difunctional or trifunctional organic acid and a buffering amount of a quaternary amine, ammonium hydroxide, hydroxylamine, hydroxylamine salt, hydrazine or hydrazine salt base. A method in accordance with the invention for removal of chemical residues from a metal or dielectric surface comprises contacting the metal or dielectric surface with the above composition for a time sufficient to remove the chemical residues. A method in accordance with the invention for chemical mechanical polishing of a copper or aluminum surface comprises applying the above composition to the copper or aluminum surface, and polishing the surface in the presence of the composition.

The invention discloses a composite fire-proof material with high refractoriness under load for coke ovens. The preparation method of the material comprises the following steps of: evenly mixing and crushing 40%-60% of Al2O3, 15%-30% of SiC micro powder, less than 2% of Fe2O3, 5%-10% of Si micro powder and 1%-3% of cement as an additive; adding 3%-5% of Al(H2PO4)3 as an adhesive and stirring and mixing evenly; and pouring the mixture to a working region in 20-30 minutes. The furnace-building process comprises the following steps of: cleaning a kiln, measuring, molding, positioning and supporting a mould, adding materials, pouring and correcting, cleaning, starting for warming up and testing. The coke ovens newly built by pouring is characterized in that the top of the chamber of the furnace is fan-shaped, the chamber of the furnace is built by on-site seamless overall vibration pouring according to the process above with the furnace-building materials above, afterheat of the furnace can be recycled for power generation and no chemical residues exist. The furnace is short in charring time and higher in coke recovery and can be started and used at any time between the normal temperature and 1550 DEG C.

The invention discloses an organic rice cultivation method, which comprises the following four steps of: 1) rice seedling raising, 2) fertilizer application; 3) reasonable close planting and 4) field management. The organic rice cultivation method is characterized in that the step of fertilizer application comprises the following two sub-steps of: 1) preparing and applying composted farmyard manure: evenly spraying microbial manure into farmyard manure, covering the farmyard manure with a plastic film, processing for 21 days to obtain the composted farmyard manure and then applying the composted farmyard manure in a paddy field; and 2) applying microbial manure: applying the microbial manure in the paddy field with water depth being less than 3cm and transplanting rice seedlings 15 days later after the microbial manure is applied. The organic rice cultivation method has the advantages that the heavy-metal ions and the chemical residues thereof in soil can be eliminated; the caking and the desertification of the soil can be gradually eliminated, the content of organic matters is improved, the pH (potential of hydrogen) is regulated, the granular structure is optimized and the breeding of harmful pathogenic bacteria is inhibited; the nutrients are sufficient; and a large quantity of nitrogen elements in air and various intrinsic elements in the soil are fully utilized, and low-carbon, environmental-friendly, sustainable, circular and high-efficiency agricultural economy is formed.

The invention discloses a biological pesticidal organic fertilizer and a preparation method thereof. The biological pesticidal organic fertilizer is prepared from the following raw materials in parts by weight: 40-50 parts of pig manure, 20-30 parts of tea seed pulp, 10-15 parts of coffee grounds, 8-12 parts of paulownia sawdust, 5-10 parts of phosphogypsum, 4-8 parts of corn cob, 5-10 parts of pepper seed cake, 10-15 parts of mushroom dreg, 8-12 parts of wheat bran, 15-20 parts of bentonite, 10-15 parts of opoka, 2-3 parts of ferrous sulfate, 1-2 parts of manganese sulfate, 3-5 parts of humic acid, 1-2 parts of chinese tallow tree root and bark, 2-3 parts of sophora alopecuroides, 1-2 parts of stemona, 1-3 parts of Artemisia annua, 1.5-2.5 parts of ailanthus leaf, 2-3 parts of derris and 1-2 parts of Radix Euphorbiae Ebractealatae. The organic fertilizer disclosed by the invention has multiple effects of providing nutrients, improving the soil structure, preventing and treating pests and diseases and the like, can promote the crops to quickly grow, enhances the stress tolerance of the crops, can have favorable preventing and treating effects on nematodes and soil insects, reduces or avoids use of chemical pesticides, enhances the soil fertility, regulates the ecological equilibrium of soil, improves the quality of agricultural products, has no chemical residues, and implements yield increase and income increase of agricultural products.

The invention relates to a method for preparing a polymeric open cell foam material. By virtue of a supercritical fluid foaming technology, by way of mould foaming, under the premise that other performances of a polymer are not affected, nanoparticles with double effects of a nucleating agent and a cell-opening agent are added, so that the nucleation density and the aperture ratio of the polymer are remarkably improved. By adding a cell-opening auxiliary agent, on the one hand, an effect of a heterogeneous nucleating agent can be exerted to accelerate cells to be nucleated and to increase the cell density; on the other hand, the cell-opening auxiliary agent is a good cell-opening agent which promotes cell walls to break and increases the aperture ratio. The whole process provided by the invention is green and environmental-friendly and free of chemical residues; moreover, the pressure and temperature in a swelling treatment process can be adjusted to prepare the open cell foam material with different cell sizes. The polymer provided by the invention has a lot of open cells and is adjustable in cell size.

The invention discloses a method for producing sweet potato starch and treating sweet potato dregs and belongs to the field of food processing. The method comprises the following steps: delivery, washing, pulverization, slurry-dreg separation (filter-pressing of sweet potato dreg, pulverization of sweet potato dreg, drying and packaging of sweet potato dreg), filtration of starch stock, separation, dehydration of starch milk, drying of sweet potato starch, gas-powder separation, sieving, packaging of sweet potato starch, and fashioning. The method has the advantages of high yield of sweet potato starch, high resource utilization rate and no environmental pollution. The method is used for the production of starch from sweet potatoes with different starch contents, as well as starch-containing tuber crops such as potato, taro and Kudzuvine root. The method is implemented by physical process without using any chemicals, so that the sweet potato starch is free of harmful chemical residues.

The invention relates to a liquid mass database for detecting chemical residues in animal-derived food and a using method thereof. The method for establishing the database comprises the following steps that 1, a standard working solution is prepared; 2, treatment before analysis is conducted, wherein treatment before analysis is conducted on a sample to be tested according to the extraction and purification technique based on rapid enzymolysis and rapid solid-phase extraction (SPE); 3, chromatographic analysis is conducted at a time; 4, a liquid mass spectrogram library is established.

The invention discloses Paecilomyces lilacinus FZ07-9F-5 CGMCC No.2780, microbial inoculum and application thereof. The microbial inoculum is wireworm killing biological microbial inoculum with slow application function, which is prepared by the following steps: using a macromolecular material, namely sodium alginate as basic skeleton, using mycelium and spore mixture of P. lilacinus FZ07-9F-5 CGMCC No.2780 as active components, using infusorial earth as a carrier, and adopting a method of sodium alginate-calcium chloride reaction according to the characteristic of forming gel by the sodium alginate and polyvalent cations to be prepared into the microbial inoculum. Proved by experiments, the microbial inoculum has better wireworm killing efficacy, has control ratio up to between 50 and 60 percent, is comparatively stable, has no noxious chemical residues (innocuous and non-residue), does not pollute agricultural products and environment (does not react with other substances in the environment), and has the characteristics of high cost performance and convenient application. The microbial inoculum plays an important role in control of wireworm diseases of plant roots and knots, and has wide application prospect.

The invention discloses a surface treatment method and a texturing method for diamond wire cutting silicon wafers. The surface of a diamond wire cutting silicon wafer is covered with an amorphous silicon layer caused by cutting, and line marks are densely distributed on the surface of the diamond wire cutting silicon wafer. The surface treatment method comprises the following steps: cleaning and pre-treating a diamond wire cutting silicon wafer; putting the cleaned and pre-treated diamond wire cutting silicon wafer in mixed solution containing metal ions, oxidizing agent and etching agent, and carrying out metal ion adhesion, SiO2 generation through oxidation, and catalytic chemical etching reaction in sequence; cleaning the etched silicon wafer with first cleaning fluid, second cleaning fluid and deionized water respectively, and removing metal particles, an oxide layer and chemical residues on the surface of the silicon wafer; and cleaning the silicon wafer to obtain a silicon wafer which has no line marks and contains a micro-defect amorphous layer. According to the invention, a diamond wire cutting silicon wafer can be effectively textured through a regular process, and the conversion efficiency of a crystalline silicon solar cell prepared with the textured silicon wafer is improved.

A method for cleaning a process chamber in such a manner that chamber-cleaning chemicals or agents are incapable of remaining in the chamber after cleaning and chemically interfering with semiconductor fabrication or other processes subsequently carried out in the chamber. The method includes providing a repellant coating layer having a hydrophobic or hydrophilic polarity on the interior surfaces of a process chamber and using a cleaning agent having a polarity opposite that of the repellant coating layer to clean the chamber. Accordingly, the cleaning agent removes post-processing chemical residues from the interior chamber walls and other surfaces and is incapable of adhering to the surfaces and remaining in the chamber upon commencement of a subsequent process carried out in the chamber.

The invention discloses a full nutritional silkworm pupa peptide functional foodstuff, a preparation method thereof and a novel method for juice extraction and peeling of silkworm pupas. Protamex composite protease and Flavourzyme flavor protease are adopted for zymohydrolysis step by step, so that the efficiency and the polypeptide yield are high; the pH value is not required to be adjusted, so that chemical residue is avoided; and raw materials are subjected to sterilized treatment, so that the product is safe and sanitary; the method for juice extraction and peeling is simple and convenient, has high efficiency, and is complete in separation of slag crust; and more than 90 percent of proteins in the product are converted into micromolecular peptide, and the micromolecular peptide with more than 80 percent of molecular weight is distributed between 100 and 4,000 Dalts. The product comprises the following compositions: 46 to 55 percent of polypeptide, 5 to 10 percent of free amono acid, 22 to 33 percent of fat, 2 to 7 percent of carbohydrate and 3 to 8 percent of ash, and contains various mineral matters, microelements and vitamins. The product has the efficacies of reducing blood lipid, reducing blood pressure, preventing cardiovascular and cerebrovascular diseases, improving the immunity, resisting fatigue, prolonging senility and so on.

The invention relates to a method for rapidly propagating high-quality seedlings of Lycium ruthenicum Murr.. The method includes the steps as follows: firstly, seeds are washed with running water, sterilized with 75% (vol) alcohol and washed with aseptic water for 3 to 4 times; then, the seeds are sterilized with 0.1% (mass) mercuric chloride, washed with sterilized water for 3 to 4 times, and then inoculated in an MS culture medium to cultivate aseptic seedlings; and after the aseptic seedlings are cultivated for one month, the stems of the aseptic seedlings are cut off, and then cut into stem segments with the lengths of 0.5 cm and inoculated into a culture medium containing MSKH2PO413.5mg/LNAA0.1mg/L for cultivation. The method has the advantages that all the sterile seedling can take root, the aseptic seedlings of Lycium ruthenicum Murr. can be rapidly propagated, the period is short, the growth of the seedling is not influenced by factors of seasons, climate, natural disasters and the like, and the industrial production can be achieved; and by means of the technology, a plurality of problems of low propagation capacity, lack in resource, agriculture chemical residues and the like of a medicinal plant can be solved.

An indicator that is an adhesive label-like testing indicator that is used to detect the presence of trace chemical residues, e.g., explosive compound residues or other hazardous chemicals. The indicator comprises a substrate, preferably transparent, having an upper surface and a lower surface and a first portion and a second portion joined at a fold line, the first portion being smaller in area than the second portion. A pressure sensitive adhesive coats the upper surface of at least the second portion of the substrate. A first reactant is adhered to the upper surface of the first portion of the substrate. When the upper surface of the second portion, is contacted with a surface containing the trace chemical residues, e.g., the handle of a briefcase, the chemical residue adheres to the adhesive. When the first portion is subsequently folded along the fold line so that the upper surfaces of the substrate contact each other, a portion of the adhesive on the second portion remains exposed. This exposed portion may be used to attach the indicator to an article, e.g., a passport or the article tested. Subsequently, over a period of time, the first reactant and any chemical residue present react with each other to provide a color indicia indicating the presence of the chemical residue.

The invention provides a beef cattle fattening feed which has the characteristics of low cost, good fattening effect, obvious economic benefits and the like. The feed comprises a basic ration group including corn, wheat bran, soybean meal, a Chinese herbal medicine additive, ginger flour, a premix, corncob, Chinese wildrye, dry pomace and the like. The beef cattle feed contains rich protein, sufficient energy and various mineral substances, is free from hormone and chemical residues, can improve the appetite of cattle and enhance immunity of the organism, and has the functions of promoting growth of beef cattle and improving the production performance of beef cattle.

The invention relates to a small water turtle breeding feed and a preparation method thereof. The small water turtle breeding feed is prepared from the following raw materials in parts by weight: earthworm powder, Chinese yam powder, extruded soybeans, beer yeast, cod-liver oil, pork tripe meal, mussel meal, amino acid, monocalcium phosphate, mineral substances and traditional Chinese medicine powder, wherein the traditional Chinese medicine powder comprises bighead atractylodes rhizome, medicated leaven, malt, rice sprout, embelia laeta and ajuga nipponensis. Compared with the prior art, the small water turtle breeding feed is prepared according to the growth requirements of small water turtles, is rich in nutrition and free of hormone and chemical residue and is capable of promoting the appetite and digestion of the small water turtles.

The invention discloses a crystalline silicon solar cell wet chemical treatment method for performing texture surface making and cleaning steps. The method comprises the following steps: (1) providing a pre-treated silicon slice; (2) pre-cleaning the silicon slice by adopting a first cleanout fluid to remove granular impurities and pollution on the surface of the silicon slice; (3) polishing the silicon slice by adopting a polishing corrosive liquid to corrode a medicinal damage layer on the surface; (4) adopting a texture surface making solution to perform texture surface processing on the silicon slice to form a textured surface on the surface of the silicon slice; (5) cleaning the silicon slice by adopting a second cleanout fluid to remove surface metal ions and neutralize alkali impurities, so that the chemical residues on the surface of the silicon slice are reduced; and (6) treating the silicon slice by adopting an oxidation corrosion liquid to remove the oxide layer and to form a hydrophobic drying structure on the surface of the silicon slice. The textured silicon slice can be stored for a long time, the surface cleanliness and the antireflection effects of the textured silicon slice reach relatively high level, the production time is greatly reduced and the production efficiency is improved.

The invention discloses a banana storage and transportation preservation method which comprises the following steps of: harvesting bananas, carrying out preservative and fresh-keeping treatment, pasting brands, packaging, precooling, storing and the like, namely, sterilizing and washing the bananas with the mature degree being 70-85% and without mechanical damage by using a 5-10mg/kg chlorine dioxide solution, subsequently putting the washed and drained bananas into a Chinese medicine herb extract solution with the concentration being 0.2-0.5% to be soaked for 3-8 minutes so as to carry out the preservative and fresh-keeping treatment; and pasting the brands, packaging and finally precooling and storing. According to the method, chlorine dioxide is used as a sterilizing agent, and the Chinese medicine herb extract solution is applied to the preservative and fresh-keeping treatment, so that the bananas are green, environment-friendly, free of chemical residue, good in preservation effect, long in preservation and freshness time, and applicable to long-distance storage and transportation when being exported and sold to other countries, and the method is easy to popularize.

The invention discloses a fresh processing method of flavored Lactuca sativa var. angustata. The method comprises the steps of harvesting high-quality Lactuca sativa var. angustata; instantly refrigerating to keep unique color and appearance, and freshness; and soaking with ozone water instead of chemical food additives to realize color protection, enzyme deactivation and sterilization. The product has no any chemical residue, and no decoloration after storage for above one year. The processing method provides plural pickling liquid formulations with different flavors, all of which contain beneficial components and have health-promoting effects after being eaten for long time, serve as both medicine and food, and have benefits and no side effects. The pickling liquid is flavored with salt and sugar, and accords with taste of the public, and the mouthfeel of flavored Lactuca sativa var. angustata is widely accepted by public.

The invention provides a special organic fertilizer for walnuts, which is prepared from, by weight, 45-55 parts of weathered coal, 5-10 parts of wheat bran, 5-10 parts of pepper powder residues, 20-30 parts of straws, 1-2 parts of urea, 50-60 parts of water, 10-12 parts of trichoderma culture solution, 1-2 parts of phosphorus sources, 0.01-0.02 part of iron sources, 0.01-0.02 part of zinc sources, 0.01-0.02 part of copper sources, 0.01-0.02 part of manganese sources and 0.05-0.1 part of boron sources. The invention further provides a preparation method for the organic fertilizer. The organic fertilizer has the advantages that raw material sources are wide, a production method is simple, biological activity of products is high, sufficient comprehensive nutrition is provided for walnut trees and the like, and enables the walnut trees to grow robustly and be higher in stress resistance and disease resistance, fruit setting rate of the walnut trees can be increased, empty shell rate of the walnuts is decreased, and the special organic fertilizer for the walnuts has the advantage of no chemical residue.

The invention relates to a method for extracting dietary fiber from Chinese yew. The method disclosed by the invention adopts a high pressure homogenization-enzyme combination method. According to the extraction method of the dietary fiber, disclosed by the invention, the yield of the soluble dietary fiber can be improved, the production process is simple and easy to operate, and chemical residues can be avoided.

The invention provides a wheat flour cleaning production process and relates to the technical field of grain processing and production. The wheat flour cleaning production process comprises the following processing steps: preparation, cleaning, grinding and the like, wherein the cleaning processing step comprises primary cleaning, fine cleaning, wheat threshing, primary moistening, brushing, wheat wetting, stone removing, wheat threshing, brushing, color selecting, sterilization and the like. The wheat flour cleaning production process emphasizedly solves the problem that finished wheat flour as wheat contains pesticide residues (toxic residues), chemical residues (toxic residues), mildew, pathogenic microorganisms and various impurities, and also solves the problem of secondary pollution of the products caused in processing and producing through combining the production of common powder and special powder, a wheat path and a powder path are scientific in design, the process is reasonable, and the production cost is low, so that the wheat flour cleaning production can be achieved, and the quality safety of wheat processed products can be guaranteed.

The invention discloses an efficient high-quality quail cultivation technique, relates to a livestock breeding technique and overcomes the defect of the traditional quail cultivation method that human bodies are not benefited as chemicals are added into fodder. The method disclosed by the invention has the advantages such as good quail meat quality and no chemical residues in the quail body. The method is characterized in that a formula for nestling quails comprises the components in weight by parts as follow: 45-55 percent of corn powder, 25-30 percent of bean cake, 1-5 percent of licorice, 5-10 percent of golden cypress, 1-5 percent of radix scutellariae, 1-5 percent of bone powder, 1-5 percent of honeysuckle and 5-10 percent of multivitamins. The efficient high-quality quail cultivation technique has the beneficial effects of being easy in material selection, low in cost without medical residues in bred quails and capable of improving the body quality of meat quails or the production capacity of the quails; and during use, the fodder is uniformly stirred according to the needed proportion for being drunk by the quails, and after eating the fodder, the quails are reduced by 40-50 percent in crude fat and obviously improved in in-vivo amino acids.