196 results about "Urea nitrogen" patented technology

A disposable urea sensor has a laminated body having a fluid sample inlet end and an electrical contact end, a fluid sample inlet, a substantially flat sample chamber in communication between the fluid sample inlet and a vent opening, the sample chamber being adapted to collect a fluid sample through the fluid sample inlet, a working electrode and a reference electrode within the sample chamber, and a reagent matrix disposed on the working electrode wherein the reagent matrix contains urease.

The present invention is sand sage polysaccharide, prepared with sand sage seed deoiling dreg as material and through extraction, separation, enzymolysis and chromatographic separation, and its preparation process and application. The preparation process features 50-80 concentration alcohol solution extraction, extraction with mixed chloroform and normal butyl alcohol liquid, enzymolysis with papain, and chromatographic separation in sephadex G-20 column. Sand sage polysaccharide is used in treating alloxan diabetes, reducing the damage of liver and kidney caused by diabetes, lowering the content of glutamic-oxaloacetic transminase, glutamic-pyruvic transminase and urea nitrogen in blood, and inhibiting diabetes caused weight loss.

The invention relates to a nitrogen synergistic fertilizer, in particular to a synergistic slow-releasing urea fertilizers and a preparation method thereof. The fertilizer constituents are as follows: urea nitrogen fertilizer, a biochemical inhibitor and a synergist, wherein, the weight portion ratio of the urea nitrogen fertilizer to the biochemical inhibitor to the synergist is equal to 1:0.001 to 0.1:0.0005 to 1; the biochemical inhibitor is a urease inhibitor, and the synergist is poly (aspartic acid). The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic urea fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing urea fertilizer.

The invention discloses a model for forecasting multi-dimensional flux migration and transformation of fertilizer urea nitrogen in paddy fields, mainly considering destination balance problem of fertilizer nitrogen, emphasizing effects to water environment, and protruding the migration of the fertilizer nitrogen to surface water and groundwater. The method is formed by coupling a water balance module and a nitrogen balance module. The nitrogen balance module comprises the nitrogen transformation processes such as urea hydrolysis, ammonia volatilization, nitrification, denitrification, fixing, mineralization, absorption and the like; the water balance module comprises the processes such as infiltration eluviation, lateral seepage and radial flow (containing drainage). The model disclosed by the invention can comprehensively simulate the effects of the nitrogen to the water environment during migration and transformation in the paddy field by using few parameters.

The invention discloses a lactobacillus plantarum UA-416 strain and application thereof, and belongs to the field of functional food microbes. Blanks of lactobacillus plantarum in the effects of lowering uric acid and resisting gout are filled up. According to the lactobacillus plantarum (Lactobacillus plantarum) UA-416 strain provided by the invention, the bacterial strain is already collected inthe China Center for Type Culture Collection (CCTCC) on July 25, 2017; the collection number is CCTCC NO: M2017419. The lactobacillus plantarum UA-416 strain provided by the invention can be used foreffectively lowering the level of blood uric acid, is used for improving the levels of urea nitrogen and creatinine and inhibiting the activity of xanthine oxidase in serum, and has prevention and treatment effects on uricemia or the gout.

The invention relates to efficient chemical fertilizers, in particular to an efficient slow-release bulk-blending (BB) fertilizer and a preparation and application method thereof. The efficient slow-release BB fertilizer is composed of urea nitrogen fertilizers, phosphatic fertilizers, potash fertilizers, secondary nutrient elements required by plants and trace nutrient elements required by the plants. Measured according to urea pure nitrogen amount of the urea nitrogen fertilizers, urea nitrogen fertilizer amount are 40-46.3% of the pure nitrogen amount, phosphatic fertilizer amount is 30-90% of the pure nitrogen amount, the potash fertilizer amount is 45-100% of the pure nitrogen amount, secondary nutrient elements comprise calcium taking up 10-45% of the pure nitrogen amount and magnesium occupying 5-35% of the pure nitrogen amount, and the trace nutrient elements comprise ferrum occupying 0.1-5% of the pure nitrogen amount, copper occupying 0.1-3% of the pure nitrogen amount, manganese occupying 0.5-3% of the pure nitrogen amount, zinc occupying 0.1-2% of the pure nitrogen amount, boron occupying 0.05-2% of the pure nitrogen amount and molybdenum occupying 0.01-2% of the pure nitrogen amount. Nitrogen fertilizer dosage and proportion of the efficient slow-release BB fertilizer are set fully according to fertilizer requiring characteristics to nitrogen of the plants at different growth periods, continuous supplying of the fertilizer nitrogen is guaranteed, and loss of a nitrogen fertilizer is controlled remarkably.

The invention discloses a grape planting method. Grapes are prevented from being directly irradiated by sunlight by a shed frame cultivation mode, racks are erected to fix grape seedlings to enable branches to grow vertically, the branches are illuminated averagely, grape branches and leaves are assisted to be away from the ground and are prevented from being damaged by bacteria, furrow application of fertilizers is implemented, rooting of grape branch seedlings is facilitated, after field planting is finished, a relation between growth and fruit setting is regulated, nutrients of tree bodies, water supply and illumination conditions are regulated, the growth speed of grape trees is increased, fruit setting is implemented ahead of time, the purpose of high yield is achieved, a urea nitrogen mixed solution is compounded and is sprayed on main vines and side vines of grapes, the period of dormancy is shortened, nutrients are provided for grape branches, sprouting is facilitated, air temperature and humidity and soil humidity in a greenhouse are severely controlled, and vain growth of the grape seedlings is prevented. The grape planting method comprises detailed steps and is simple to operate; the fruit setting rate and the product quality of the grapes can be improved effectively; the appearances of the grapes are attractive; the quality is good; and the nutritional value is high.

The invention relates to sandwich heat-preservation wall and a construction method thereof. The heat-preservation wall consists of two layers of cavity wall which is brick-built by the internal and the external layers of masonry blocks; the heat-preservation layer is formed by insulation material by spot foaming. The insulation foaming material can be urea formaldehyde foaming material or polystyrene foaming material or urea nitrogen foaming material or polyurethane foaming material. The sandwich heat-preservation wall can improve wall heat-preservation performance, decrease production procedure, reduce production cost and waste, and meet the environment protection requirement for saving energy and reducing emissions.

The invention relates to a method for producing a microbial feed by utilizing flammulina velutipes residues through segmental cultivation and joint transformation and fermentation of funguses and bacteria. The method comprises the following process steps: raw material processing, fungus leavening agent formulation, compound bacteria leavening agent manufacturing, segmental solid fermentation, drying, crushing and the like. The microbial feed produced by adopting the method is free of any chemical additive ingredient, has a natural fermentation flavor, contains various amino acids, vitamins and other nutrient substances, as well as a great amount of biological active enzymes, and can remarkably reduce the contents of glutamic pyruvic transaminase, glutamic oxalacetic transaminase, cholesterol, triglyceride and urea nitrogen in blood and improve the quality of animal livers and kidneys, thereby being a super-quality and competitive-price green biological feed for feeding livestock.

The invention relates to a composition having muscle power fatigue alleviating and anoxic tolerance improving effects. The composition is prepared by using L-arginine, L-citrulline, taurine, vitamin C, vitamin E powder and folic acid according to a prescribed ratio. Animal function tests prove that the composition can obviously prolong the weight bearing swimming time of mice, prolong the viability time of the mice under normal pressure anoxic conditions, obviously reduce the urea nitrogen and blood lactic acid content of serum of post-exercised mice, and increase the liver starch content of mice during exercise; and results of human feeding tests show that the composition can improve the maximum oxygen consumption of subjects, reduce the blood lactic acid rise after exercise and increase the exercise tolerance of bodies. The composition has muscle power fatigue alleviating and anoxic tolerance improving effects.

The invention relates to a seaweed oligosaccharide synergistic urea and a preparation method thereof. The preparation method comprises the following steps: mixing seaweed oligosaccharide and urea or raw materials or intermediate product in the urea synthesis step, and carrying out evaporation and granulation in the urea preparation technique to prepare the seaweed oligosaccharide synergistic urea. The special carboxy group with complexation, ion exchange and slow release properties in the oligosaccharide structure can be combined with the cationic group in the urea, so that active factors (ammonium ions and ammonia) in the urea nitrogen fertilizer can be slowly released in soil, thereby achieving the goal of providing nutrients for the plant for a long time. The seaweed oligosaccharide synergistic urea can enhance the utilization ratio of the nitrogen fertilizer to 45-55%, stimulate the plant to generate induced disease resistance, and enhance the autoimmunity of the plant. Besides, the seaweed oligosaccharide synergistic urea can prevent the plant from absorbing heavy metals around the root system, improve the soil environment and enhance the safety of the plant.

The present invention discloses the use of Fritillaria fricarifolia alkaloid compounds represented by general formula I in the preparation of antitussive, expectorant and/or anti-inflammatory drugs, wherein R1 is: =O or R2 is: H; R3 is: H; R4 is H or OH; R5 is: O or none. Among them, Sibetine, Tribenidone, Sibetine Nitrogen Oxides, Isofibesine, Isofibesine Nitrogen Oxides and 10 times the amount of codeine phosphate have similar antitussive effects, and the 5 The antitussive and anti-inflammatory effects of this monomer are also superior to peiminine and peiminine; among them, peiminine, peiminine, sibenetine, sibemine nitrogen oxide, and isobeamine Nitrogen oxides have a good expectorant effect. The invention also discloses the total alkaloid extract of Fritillaria wabu and its preparation method and application. Formula I

The invention provides application of N6-(2-ethoxy)adenosine in preparation of preparations for treating renal failure. By virtue of the N6-(2-ethoxy) adenosine, levels of inosine and urea nitrogen in renal failure and renal ischemia reperfusion injury can be obviously reduced, and renal tubular epithelial cell apoptosis and kidney inflammations are inhibited. The N6-(2-ethoxy) adenosine can be applied to multiple treatment applications of renal failure, renal transplant, renal ischemia reperfusion injury, kidney stone lithotripsy inflammations and other nephritides.

The invention provides a single-composition traditional Chinese medicine preparation, and a preparation method and application thereof. The traditional Chinese medicine preparation is characterized by being prepared from a main raw material of an artificially cultivated cicada active component. The single-composition traditional Chinese medicine preparation provided by the invention has obvious treatment and prevention effects on generation and development of chronic renal failure. According to animal experiments, the single-composition traditional Chinese medicine preparation provided by the invention can improve kidney functions, lower serum creatinine level and urea nitrogen level, increase hemoglobin, reduce ECM (extracellular matrix) deposition, mitigate renal tubulointerstitial injury and delay renal interstitial fibrosis; besides the single composition is safe, effective and without obvious toxic or side effects.

The invention discloses an application of physically-modified Chinese cobra venom in preparation of medicaments for treating acute and chronic nephrosis. The physically-modified Chinese cobra venom is obtained by dissolving Chinese cobra venom with deionized water, heating for denaturation and then performing renaturation; the heating temperature is controlled to be 50-100 DEG C, and the heating time is controlled to be 1 min-300 min. The invention finds that the heated and denaturated Chinese cobra venom can effectively reduce urine protein in acute and chronic nephrosis, reduce serum creatinine, and urea nitrogen, improve the pathological damage degree of the kidney, and recover kidney functions.

The invention relates to the technical field of renal dialysis and discloses a big data-based nephropathy dialysis index measurement system and a big data-based nephropathy dialysis index measurementmethod. The nephropathy dialysis index measurement system comprises a personal information input module, an index detection module, a dialysis index input module, a dialysis scheme input module and anexpert system. The expert system comprises a processor, a data storage module, a retrieval analysis module and a display. According to the invention, the heart rate, the blood pressure, the body weight and the serum creatinine, the urea nitrogen, the hemoglobin, the total protein and the albumin data of a nephrotic patient in the plasma before dialysis are directly taken as a basis. In combination with a dialysis scheme for renal dialysis patients, the renal dialysis is carried out on the nephrotic patient through the expert system and relevant indexes of the nephrotic patient are detected tobe matched with the expert system. A dialysis scheme meeting the individual physiological conditions of the nephrotic patient is generated, and the expected treatment effect of renal dialysis is improved.

The invention discloses a whitening and anti-fatigue body lotion. The whitening and anti-fatigue body lotion of the invention contains vine tea extract, sweet tea extract and black medicine extract in the weight ratio of (0.2-2): (0.4-2): (0.2~2) mixed plant composition, the whitening anti-fatigue body lotion of the present invention achieves the effect of anti-fatigue by reducing the content of urea nitrogen, has the effects of anti-fatigue and anti-aging, and has good inhibition on tyrosinase Effect, through the inhibition of tyrosinase production to reduce melanin production to achieve whitening effect.

The invention discloses the application of a flos chrysanthemi indici extract. Linarin is contained in the flos chrysanthemi indici extract, the mass percent of the linarin is not smaller than 50 percent, the application of the flos chrysanthemi indici extract is as follows: the flos chrysanthemi indici extract is used for preventing or curing hyperuricemia. According to the invention, through the combination of the linarin contained in the flos chrysanthemi indici extract, the characteristic of lowering xanthine oxidase activity can be achieved, and the flos chrysanthemi indici extract can be used for preventing or curing hyperuricemia, can remarkably lower the serum uric acid level of a model rat, can lower the levels of serum creatinine and urea nitrogen, has the advantages of easiness in component separation, controllability in quality, low additive dose, remarkable effects and the like, and has a great and profound significance in improving human health.

The invention belongs to the field of pharmacotherapeutics, and particularly relates to application of 18 beta-glycyrrhetinic acid (or salt) for serving as an auxiliary treating drug capable of easing acute kidney injury caused by a chemotherapeutic drug, namely cis-platinum, wherein the 18 beta-glycyrrhetinic acid (or salt) is one of the main components of liquorice. The cis-platinum serves as a commonly-used chemotherapy drug, and clinical application thereof is restricted by kidney toxicity thereof. The levels of creatinine and urea nitrogen in the acute kidney injury induced by the cis-platinum can be inhibited by the18 beta-glycyrrhetinic acid, expression of KIM-1 injured protein is lowered, and apoptosis of renal tubular epithelial cells caused by the cis-platinum is inhibited. According to the application of the 18 beta-glycyrrhetinic acid (or salt) for serving as the auxiliary treating drug capable of easing the acute kidney injury caused by the chemotherapeutic drug, namely the cis-platinum, the effect that the 18 beta-glycyrrhetinic acid has a protecting effect on the acute kidney injury caused by the cis-platinum is discovered for the first time, a mechanism of the 18 beta-glycyrrhetinic acid is related to inhibiting of apoptosis of the renal tubular epithelial cells, and a novel potential drug is provided for Chinese medicine anti-cancer adjuvant therapy.

The invention discloses an application of tea saponin in dairy cow milk production performance improving and belongs to the application field of tea saponin. Different doses of tea saponin are added on the basis of dairy cow daily diet, and the influence on dairy cow milk production performance and milk quality from the tea saponin is inspected. The results show that when the adding amount of the tea saponin is 20-40 g/d, dairy cow milk production amount can be improved, the milk-fat content of cow milk is improved, the urea nitrogen content in cow milk is lowered, the saturated fatty acid content can be lowered obviously, and n-3/n-6 fatty acid ratio is improved. Accordingly, the tea saponin can be used as feed additives to be used for improving dairy cow milk production performance or cow milk quality.

The invention discloses a formula of a floating urea sustained release expanded feed for cattle and sheep. The feed comprises urea, an energy feed, a protein feed, mineral salt, an adsorbent, an antioxidant and a mildewproof agent. The floating urea sustained release expanded feed for cattle and sheep is prepared by the steps of: crushing the raw materials, metering according to a certain proportion, mixing, hardening and tempering, performing extrusion puffing and granulating, and drying. The feed has the advantages that: the feed suspends in water and does not sink, the basic shape is kept in a longer time, and the detention time in rumens is relatively longer, so the feed cannot enter rear digestive tracts of the rumens due to the external flow of rumen fluid; the utilization efficiency of urea nitrogen is improved and the ammonia poisoning caused by the rapid decomposition of urea is avoided; meanwhile, protein feed sources are saved, and the raising cost is reduced.

The invention discloses a sharpleaf galangal fruit extract capable of treating chronic kidney diseases. The extract is prepared by the following steps: grinding sharpleaf galangal fruits to remove the shells, adding a certain amount of ethanol, carrying out reflux extraction, collecting the extract, making the extract go through macroporous resin, eluting the macroporous resin by low-concentration ethanol to remove the impurities, then eluting the macroporous resin by high-concentration ethanol, condensing to obtain extract, separating the extract in a silica gel column, and carrying out crystallization so as to obtain the sharpleaf galangal fruit extract. According to the pathogenesis of chronic kidney diseases and on the basis of traditional Chinese medicine theory, the inventor researches the chemical components and the clinical curative effect of sharpleaf galangal fruit. The results of a great number of experiments show that the prepared sharpleaf galangal fruit extract (nootkatone) can prominently reduce proteinuria, can also obviously reduce the levels of serum creatinine and urea nitrogen, has a good kidney protective effect, and can be used to prevent and treat chronic kidney diseases.