71results about How to "Avoid excessive loss" patented technology

The invention discloses a preparation method of a ribofuranose phosphate derivative. The preparation method comprises preparation steps as follows: L-alanine isopropyl ester hydrochloride, phenol dichlorophosphate and substituted phenol are taken as starting materials and have a docking reaction under the action of alkali; (2R)-2-deoxy-2-difluoro-2-methyl-D-erythropentonic acid GAMMA-lactone and 3,5-dibenzoate reduce carbonyl in a dichloromethane or ether solvent into an alcoholic hydroxyl group under the action of a strong reducing agent; an intermediate with a formula 2-1 has a reaction with paratoluensulfonyl chloride under the action of alkali to obtain p-toluenesulfonates; an intermediate with a formula 2-2 and a benzoyl cytosine derivative have a docking reaction under the action of a condensing agent; an intermediate with a formula 2-3 converts cytosine into uracil under the action of organic acid; benzoyl protection for an intermediate with a formula 2-4 is released under the action of an alkaline agent; an intermediate with a formula 2-5 and an intermediate with a formula 1 are docked under the action of a Grignard reagent to obtain Sofosbuvir.

The invention provides a food material identification and cooking pushing method, a food material identification and cooking pushing system and a cooking utensil, wherein the food material identification and cooking pushing method comprises the following steps: receiving an image of to-be-cooked food materials; extracting a feature value of the image; performing comparative analysis for the feature value and a prestored image, and identifying type and proportion of at least one food material in the to-be-identified food materials; according to the type and the proportion of the at least one food material in the to-be-cooked food materials, calculating cooking difficulty level of the to-be-cooked food materials; and according to the cooking difficulty level of the to-be-cooked food materials, pushing cooking information to the cooking utensil. With the method, the system and the cooking utensil provided by the invention, the type and the proportion of the to-be-cooked food materials canbe identified automatically, an effect of providing optimal cooking procedures and proportion information of the food materials and water while cooking various food materials in a mixed mode is realized, a whole pot of food materials is guaranteed to reach an optimal cooking state, and too much loss of main nutrients, B Vitamins, in the food materials can be avoided.

The invention relates to the technical field of lithium batteries, and specifically relates to an optimized dispersion method for lithium battery positive electrode slurry, and a slurrying device thereof. The optimized dispersion method for the lithium battery positive electrode slurry comprises the steps of (1) determining conductivities of slurries in different proportions when the slurries are fully and uniformly dispersed by lab-scale tests; (2) storing data obtained by the step (1) in microprocessors of conductivity testers and presetting the data as reference values; (3) monitoring the conductivities of the slurries in different positions at different temperatures in real time through the conductivity testers, and comparing the obtained data with the preset reference values in the controller so as to evaluate uniformity of the slurry, and determining a slurrying end time when the conductivity monitored in real time is fit to the preset reference value. The slurrying device comprises a main body. The main body is provided with a controller for controlling open and close of the slurrying device, three conductivity testers connected with the controller, and a stirrer. The dispersion situations of the slurry are mastered in real time and the slurrying end time can be controlled accurately, by using the method and the device.

The invention relates to a planar lightwave circuit splitter, in particular to a technique for coupling a planar lightwave circuit splitter chip and fiber array and provides a low-insertion-loss coupling technique. The low-insertion-loss coupling technique comprises an input single fiber (1), the planar lightwave circuit splitter chip (2) and an output optical fiber array (3). The low-insertion-loss coupling technique is characterized in that the input single fiber (1), the planar lightwave circuit splitter chip (2) and the output optical fiber array (3) are integrated. Difference between a chip insertion loss standard value and a finished product insertion loss value is reduced to the largest extent, phenomena of large loss and unstable performance of an automatic monitoring system caused by errors are avoided, and simultaneously production cost is reduced.

The invention relates to a single-mode photonic crystal edge-emitting semiconductor laser device. The single-mode photonic crystal edge-emitting semiconductor laser device comprises a laminated structure, wherein the laminated structure comprises a lower electrode, an N-type substrate, an N-type restriction layer, an active layer, a P-type restriction layer, a P-type cover layer, an SiO2 insulated layer and an upper electrode; the N-type substrate is manufactured on the lower electrode; the N-type restriction layer is manufactured on the N-type substrate; the active layer is manufactured on the N-type restriction layer; a three-section type waveguide raised along the longitudinal direction is arranged in the middle of the P-type restriction layer, opposite tapered waveguides are arranged on the two sides of the three-section type waveguide, and a photonic crystal waveguide is arranged between the opposite tapered waveguides and is manufactured on the active layer; the P-type cover layer is manufactured above the three-section type waveguide on the P-type restriction layer; the SiO2 insulated layer is manufactured on the side wall of the three-section type waveguide on the P-type restriction layer and covers upper part of the P-type restriction layer to form a substrate; the upper electrode is manufactured above the substrate except the side wall. Longitudinal mode and side mode of the laser device are selected through the photonic crystal waveguide, and the laser power is amplified by utilizing a symmetrical biconical structure, so that the purpose of high-power, single-mode and low-level divergence angle laser output is achieved.

The invention provides a new technology for extracting aluminium oxide from the material containing carbon aluminate. The carbon aluminate is dissolved out the material by weak sodium carbonate solution to be made into carbon aluminate solution that density is less than 100 g/f, gas CO2 is send into the carbon aluminate solution to do decomposition to generate high-silicon aluminium hydroxide and carbon decomposition mother solution which circulately dissolving out carbon aluminate, the high-silicon aluminium hydroxide is processed by low-temp. dissolving, seed-decomposed decomposing and burning to produce quality sand-type aluminium oxide.

The invention provides a method for separating and purifying L-leucine. The method comprises the following steps: (1) adding a coagulant and a flocculant into fermentation broth, and reserving supernatant; (2) adding sodium chloride and a L-leucine seed crystal into the supernatant to separate precipitate; (3) adding water to dissolve the precipitate and decolorizing; (4) adding water to dissolvethe decolorized crystal, and performing ion exchange resin chromatography purification. According to the method, by the interaction of the coagulant and the flocculant in, bacteria, proteins, lipids and other substances in the fermentation broth are effectively removed, and the separation efficiency is greatly improved; on the other hand, by adding the sodium chloride and the L-leucine seed crystal at the same time, the solubility of the L-leucine is changed, the separation efficiency of the L-leucine and L-valine is improved, and the purity of the L-leucine is improved.

The invention discloses a rehmannia-radix asparagi beverage which comproises the raw materials based on parts by weight as follows: 10-18 parts of raw rehmannia, 3-9 parts of ginger, 6-12 parts of radix asparagi, 15-50 parts of honey and 3-10 parts of apple vinegar. The beverage is prepared by Chinese medicines such as the raw rehmannia, the ginger, the radix asparagi, the honey and the apple vinegar, and adopts an ultra-high temperature instant sterilization technology and a low temperature encapsulation technology, so that the beverage can not be corrupted and deteriorated, and the overmuch loss of active constituents can be effectively avoided. The beverage is flaxen in color and luster, better in transparency, even and coincident in solutions, free of impurity after the beverage is put for a long time, bitterish in scent, tender and unique in flavor and bitterish, sour, sweet and delicious, and comprises 8-10% of soluble solid contents and 0.15% of total acid (according to citric acid). The rehmannia-radix asparagi beverage has the health-care effects of tonifying kidney, prolonging life, maintaining beauty and keeping young.

The invention discloses a thermal overload relay base injection mold. The thermal overload relay base injection mold comprises a fixed mold thermal insulation plate, a fixed mold bottom plate, a fixed mold plate, a movable mold plate, a movable mold bottom plate, a movable mold thermal insulation plate and a mold leg strip which are sequentially arranged from top to bottom. The fixed mold bottom plate is fixedly connected with the fixed mold plate. A positioning ring is arranged in the middle of the fixed mold thermal insulation plate and is fixedly connected with the fixed mold thermal insulation plate. A sprue bush is arranged in the positioning ring. First forming inserts are arranged at the two ends of the fixed mold plate. A second forming insert is arranged below the sprue bush. The thermal overload relay base injection mold is made of thermoset phenolic plastic through injection molding, the forming temperature is high, manufactured products are good in quality and high in machining accuracy, and mold opening is stable and reliable.

The invention discloses a preparation method of solid-state fermentation pickled fishes. The preparation method comprises the following steps of taking fresh fish blocks, and putting the taken fish blocks into pickling liquid for wet pickling so as to obtain primary pickled fish blocks; taking out the primary pickled fish blocks for dry pickling so as to obtain secondary pickled fish blocks; performing gradient type multistage drying on the secondary pickled fish blocks until the water content of the fish blocks reaches 45-55% so as to obtain dried fish blocks; and mixing the dried fish blocks with seasoning, and then performing sealed fermentation so as to fermentation pickled fishes. The ready-to-eat solid-state fermentation pickled fishes are rich in nutrition, low in salt content, free from fishy taste, rich in fermented flavor, fine and smooth in meat quality, rich in chewiness, and good in mouth feel, and conforms to the eating style of modern people.

A radiolabeled lymphatic staining agent is mixed on site with a much larger amount, on a weight basis, of a non-radiolabeled lymphatic staining agent to form an injectable radiolabeled lymphatic staining agent suitable for surgical use in humans. Preferably, the radiolabel is I-125, because it has a 60-day half-life which enables it to be made off-site. The preferred radiolabeled lymphatic staining agent is iodinated methylene blue, because it can be mixed with a range of non-radioactive lymphatic staining agents, for example isosulfan blue, methylene blue, patent blue, and patent blue V, to provide the injected agent with sufficient radioactivity to enable machine detection. A method for making radioiodinated methylene blue is also disclosed.

The invention relates to the technical field of fermented wine manufacture, particularly to jujube fermented wine manufacture technology. According to the technology, the problem that methanol exceeds the standard is solved, and the fermented wine product is guaranteed of abundant nutrition and good taste. The technology comprises the following steps: 1) juicing jujubes, which includes selecting and washing jujubes, blanching the jujubes with water at 80-90 DEG C for 5-10 min, putting the obtained jujubes in a juicer, adding water according to a ratio of jujubes to water being 1:1-3, and adding edible ethanol, the volume of which is 1-5% of the total volume; 2) performing enzymatic hydrolysis; 3) performing primary fermentation, which comprises putting filtered jujube juice in a fermentation cylinder, adding 100-500 ppm of activated angel fruit wine active dry yeast with the fermentation temperature being 18-30 DEG C, the fermentation time being 3-6 d, and the PH value being 3-5; and 4) performing secondary fermentation, which comprises taking the supernatant liquid out, pouring the supernatant liquid in the cylinder, adding 100-500 ppm of activated angel Baijiuwang active dry yeast with the fermentation temperature being 18-30 DEG C, the fermentation time being 3-6 d, and the PH value being 3-5.

The invention provides a polishing solution for replacing a copper pickling process to teat copper and a copper alloy surface. The polishing solution consists of the following components in percentage by mass: 5-10% of persulfate, 1-5% of phytic acid, 1-3% of potassium iodate, 0.01-2% of polyacrylamide with molecular weight being 2000-10000, 0.5-2% of triethanolamine oleate, 3-10% of tetramethylammonium hydroxide, 0.1-1% of a surfactant, 0.1-3% of a complexing agent, 0.5-1% of a brightener and the balance deionized water. The polishing solution is a chemical polishing solution which does not contain sulfuric acid, chromic acid, nitric acid and hydrochloric acid, is used for smoothing copper and the copper alloy surface through chemical polishing, and giving sufficient gloss to the chemically polished surface. The polishing solution provided by the invention is suitable for large-batch mechanical production, and does not have an excessive corrosion phenomenon even after being used for repeatedly cleaning. Moreover, in a chemical polishing process, environmental pollution due to the fact that harmful nitric oxides and acid mists are generated by decomposing nitric acid is not caused, and chemical polishing can be safely carried out.

The invention discloses a novel efficient low-consumption UASB (upflow anaerobic sludge blanket) +ABR (anaerobic baffled reactor) granular sludge process based brewing industrial wastewater treatmentmethod. A UASB+ABR reactor is adopted, a sewage speed-regulation constant-flow pump is mounted on the lower portion of the lateral side of the UASB+ABR reactor, a first liquid flow meter is arranged on the lateral side of the sewage speed-regulation constant-flow pump, and a backflow speed-regulation constant-flow pump, a second liquid flow meter and a sludge discharging pipeline are mounted on the lateral side of the UASB+ABR reactor. The inner bottom of the UASB+ABR reactor is provided with a first reaction chamber, and a three-phase separator is arranged above a second reaction chamber which is arranged above the first reaction chamber. The novel efficient low-consumption UASB+ABR granular sludge process based brewing industrial wastewater treatment method has advantages that by internal modification of the UASB+ABR reactor, a flow guide is additionally arranged below the three-phase separator, three reaction chambers are formed in the whole reactor, and accordingly an anaerobic sludge granulation process is quickly promoted by sludge floc to quickly degrade organics.

The invention discloses an application method of an automatic grinding machine used for grinding a small roller and provided with a patching sharpening grinding wheel. The automatic grinding machine comprises a lathe bed, a marble table board, a bottom plate, a graphite wheel sliding plate drive device, a graphite wheel drive device, a grinding wheel device, a sharpening copper ring device, a vertical sharpening sliding plate device, a vertical sharpening drive device, an electric spindle device, a guide wheel transverse feed device, a guide wheel drive device, a supporting wheel device, the small roller, a graphite wheel sharpening device and angle plates. According to the automatic grinding machine, the small roller is subjected to grinding machining, meanwhile, the grinding wheel can becorrected online, the sharpening grinding wheel can be electrolyzed online, and therefore the grinding forming precision of the small roller is improved, the grinding efficiency is greatly improved,and cost is low; and due to the fact that the grinding size consistency of the small roller is good, the quality is stable and reliable, and the advantages that adjustment, mounting, maintaining and use are convenient are achieved.

The invention relates to the field of cyclohexene preparation through benzene hydrogenation, in particular to a ruthenium-based hydrogenation catalyst, a ruthenium-based hydrogenation catalyst aqueous solution, a preparation method and an application thereof. The ruthenium-based hydrogenation catalyst provided by the invention comprises an active component, a first auxiliary agent and a second auxiliary agent, the active component is ruthenium, the first auxiliary agent is zinc, the second auxiliary agent is platinum and/or iridium, the first auxiliary agent accounts for 5%-15% of the catalyst by mass, and the second auxiliary agent accounts for 0.01%-0.03% of the catalyst by mass. According to the ruthenium-based hydrogenation catalyst provided by the invention, the metal ruthenium is used as an active component, the metal zinc is used as the first auxiliary agent, and the metal platinum and/or iridium are/is used as the second auxiliary agent, so that the catalytic activity of the catalyst can be effectively improved, and meanwhile, relatively high benzene conversion rate and cyclohexene selectivity are also realized.

The invention belongs to the field of gas treatment equipment, and particularly relates to a multistage VOCs industrial tail gas treatment system which comprises a dust removal chamber, a conveying belt, a dust washing tank, a washing tank, a connecting pipe and an activated carbon adsorption tank, and further comprises a dust removal module, a sand filtering module, a stirring module and a washing module, wherein the dust removal module is used for preliminary treatment of industrial tail gas; the sand filtering module is used for separating solid sand and water in the industrial tail gas; the stirring module is used for washing dust in the industrial tail gas; the washing module is used for washing the industrial tail gas after dust removal, and the industrial tail gas is introduced intothe dust removal chamber through a first gas inlet, the industrial tail gas is processed by the dust removal module, the sand filtering module, the stirring module and the washing module in sequence,passes through the connecting pipe and reaches the activated carbon processing box, and the drying layer inside the connecting pipe absorbs the liquid in the industrial tail gas, the activated carbonin the activated carbon adsorption tank is used for re-absorbing harmful organic matters in the industrial tail gas, so that the cleanness of the discharged gas is ensured.

The invention relates to nuclear reactor safety equipment, and aims to solve the problem of no usable mature sodium fire pressure relieving measures in China. The invention also provides a sodium fire pressure relieving device and method. The sodium fire pressure relieving device comprises a decorative panel, a sealing cover plate and a cover plate frame; the decorative panel is fixedly connected with the cover plate frame by a wall body penetrating part; The upper edge of the sealing cover plate is connected with the upper frame of the cover plate frame by a connector; the sealing cover plate can rotate by taking the connector as a shaft to be opened and closed; a permanent magnet is arranged at the lower edge of the sealing cover plate; the lower frame of the cover plate frame is provided with an attracting material capable of attracting the permanent magnet. The sodium fire pressure relieving device and method adopt a passive design and are high in reliability; the airtightness is good, and the possibility that radioactive sodium aerosol leaks to the environment is effectively reduced; the damage to a fast reactor facility at the moment of the initial sodium fire is avoided and the safety of the fast reactor is ensured.

The invention relates to the technical field of material microscopic information monitoring and detection, in particular to a lossless implementation method for laser-induced breakdown spectroscopy component detection and application thereof. In order to solve the problems that laser-induced breakdown spectroscopy detection in an existing atmospheric environment causes ablation damage to the surface of a material, and laser-induced breakdown spectroscopy detection in an underwater environment reduces test precision and reliability due to ionization loss of liquid water to laser beam energy and great weakening of the liquid water to spectral signal propagation. According to the lossless implementation method for laser-induced breakdown spectroscopy component detection and the application thereof, a laser-induced breakdown spectroscopy test process in an atmospheric environment is subjected to constraint type improvement, and a laser-induced breakdown spectroscopy destructive result is effectively compensated by adopting a pulse laser shock peening effect, so that lossess laser-induced breakdown spectroscopy component detection is realized.