50results about How to "Little change in concentration" patented technology

There is provided a pharmaceutical composition comprising (i) a compound of the formulawherein: X is a hydrocarbyl ring having at least 4 atoms in the ring; K is a hydrocarbyl group; Rs is a sulphamate group; (ii) optionally admixed with a pharmaceutically acceptable carrier, diluent, excipient or adjuvant, wherein the compound is present in an amount to provide a dosage of no greater than 200 μg / day.

The invention discloses an advanced redox innocent treatment system and method for waste pollutants, belonging to the technical fields of pollution treatment and restoration and environmental protection. The innocent treatment system comprises a waste degradation subsystem, a waste liquid treatment subsystem, an ozone water preparation subsystem, a degradation reagent addition subsystem, a detection control subsystem and a water level control subsystem. The method comprises the following steps: determining the type of waste pollutant, selecting the degradation reagent, pouring the waste pollutant into a treating pond, carrying out advanced redox treatment on the waste pollutant, carrying out innocent treatment on the treated waste liquid, reutilizing, and carrying out biodegradation treatment on the treated soil. The system and method have the advantages of obviously higher degradation efficiency and short time consumption, can treat organic pollutants within 2-3 days, can treat heavy metal pollutants within 3-5 days, greatly shorten the pollutant treatment time, and lower the cost by more than 70%.

The invention discloses a device and a method for quickly detecting rice mildewing. The device comprises a data acquisition device and a computer, wherein the data acquisition device comprises a microprocessor, a sample chamber, a gas chamber, a gas-sensitive sensor array and a first gas pump; an upper communication pipe and a lower communication pipe are arranged between the sample chamber and the gas chamber; a gas inlet is formed in the gas chamber; the gas inlet is connected with the first gas pump through a first gas inlet pipeline; a first solenoid valve is arranged on the first gas inlet pipeline; a gas outlet and a second gas pump are arranged on the upper communication pipe; a gas outlet solenoid valve is arranged on the gas outlet; the air-sensitive sensor array is arranged in the gas chamber. According to the method, rice volatilization gas is detected through the gas-sensitive sensor array, the microprocessor is used for sampling response signals generated by gas-sensitive sensors, and the computer is used for processing sampling values, calculating dynamic classification parameters delta through a nonlinear random resonance algorithm and a nonlinear self-calibration dynamic classification model so as to judge if rice is mildewed. The device and the method can be used for quickly and accurately detecting if the rice is mildewed.

The invention provides a method for refining a lithium ion cell organic electrolytic solution. The method comprises a step of contacting a lithium ion exchange resin with an organic electrolytic solution, wherein the lithium ion exchange resin is the lithium ion exchange resin containing a -SO3Li active radical. Regarding the lithium cell organic electrolytic solution to be refined with the same lithium ion concentration of 1 mol / liter, the content of metal ion impurities in the organic electrolytic solution refined by the method of the invention and the prior method are reduced below 8ppm, but after the electrolytic solution is refined by the method of the invention, a lithium ion in the organic electrolytic solution is between 1.0 and 1.02 mol / liter, the lithium ion concentration is not greatly varied with variance ratio of between 0 and 2 percent; while after the electrolytic solution is refined by the prior method, the lithium ion in the organic electrolytic solution is 0.2 mol / liter, the lithium ion concentration is greatly reduced with reducing ratio as high as 80 percent. Therefore, the method of the invention is superior to the prior method.

The invention discloses a vinegar flavor analysis device and a vinegar flavor analysis method. The vinegar flavor analysis device comprises a data acquisition device and a computer, wherein the data acquisition device comprises a microprocessor, a sample chamber, an air chamber, a gas-sensitive sensor array and a first air pump; an upper communicating pipe and a lower communicating pipe are arranged between the sample chamber and the gas chamber; an air inlet is formed in the air chamber; the air inlet is connected with the first air pump through a first air intake pipeline; a first electromagnetic valve and an activated carbon filter screen are arranged on the first air intake pipeline; an air outlet and a second air pump are arranged on the upper communicating pipe; a fourth electromagnetic valve is arranged at the inlet in the top of the air chamber; an air outlet electromagnetic valve is arranged at the air outlet; the gas-sensitive array is arranged in the air chamber. According to the method, the gas-sensitive sensor array is utilized to detect the volatilized gas of vinegar, the microprocessor samples the response signal generated by a gas-sensitive sensor, and the computer processes the sampling value and judges the flavors of vinegar. According to the invention, the flavors of different types of vinegar can be distinguished, so that a manufacturer can conveniently analyze and manage the flavors of vinegar.

The invention discloses a wet-process defluorination method for phosphoric acid. The method comprises the following steps: adding fluorine-containing phosphoric acid into a defluorination tower from the top of the defluorination tower, adding steam into the defluorination tower from the bottom of the defluorination tower, subjecting the fluorine-containing phosphoric acid and the steam to countercurrent contact, and allowing fluoride in the fluorine-containing phosphoric acid to enter a gas phase and to be discharged out of the defluorination tower along with the steam so as to obtain defluorinated phosphoric acid, wherein the defluorination tower is divided into an upper tower and a lower tower, the absolute pressure of the upper tower is 15-20 KPa, the absolute pressure of the lower tower is 20-30 KPa, and a pressure difference of the upper tower and the lower tower is smaller than or equal to 10 KPa. The defluorination method of the invention is good in defluorination effect, low inphosphoric acid consumption, low in phosphorus loss and small in phosphoric acid concentration change before and after defluorination.

The invention discloses a compost fermentation tank. The compost fermentation tank is characterized by comprising an outer tank body and an inner tank body, wherein the inner tank body is internally arranged in the outer tank body; the part between the outer tank body and the inner tank body is filled with a thermal insulation material; the top of the outer tank body is connected with a head cover; the head cover is connected with a gas recovery pipe and an exhaust pipe; an air supply device is arranged at the bottom of the inner tank body; and an input end of the air supply device penetrates out of the inner tank body and the outer tank body. The part between the outer tank body and the inner tank body is filled with the thermal insulation material, the air supply device is arranged at the bottom of the inner tank body, and the head cover is connected with the gas recovery pipe and the exhaust pipe, so that a compost can be fermented in proper temperature and humidity environments; the generated fermentation gas is small in concentration change amplitude; collection of the fermentation gas through the gas recovery pipe is simple and convenient, and an error caused by an environment change is reduced; meanwhile, the condition that the internal pressure of the tank body is in a safety range is ensured through the exhaust pipe; and the accuracy of online real-time measurement and laboratory detection of the fermentation gas is achieved.

The present invention comprises an arrangement and a method for measuring cell vitalities with a sensor array. The sensor array is formed on a surface of a semiconductor chip (1), wherein the semiconductor chip (1) comprises integrated circuits and an integrated circuit is associated with each sensor (2) of the sensor array, for processing the measurement signals of the respective sensor (2). The integrated circuits are formed in the semiconductor chip (1) spatially in each case below the associated sensor (2) and neighbouring sensors (2) of the sensor array have a centre-to-centre spacing of the neighbouring sensors (2) in the range of micrometres. The pH and / or pO2 can be measured in the environment of a living cell (4).

The present invention discloses Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials suitable as supercapacitor electrode materials, belonging to the field of electrode material technology. The preparation of the materials comprise the steps of: mixing nickel salt, urea and ammonium fluoride, dissolving the mixed materials into water, and preparing A reaction solution; adding the A reaction solution into a high-pressure autoclave, then putting pretreated foam into the high-pressure autoclave, controlling a reaction temperature and time, and obtaining an Ni(OH)2 nano array; and dissolving cobalt salt into water to prepare B reaction solution, putting the prepared Ni(OH)2 nano array into the B reaction solution, controlling the reaction temperature and time, and obtaining an Ni(OH)2-Co2(OH)3Cl composite nanometer array. The obtained Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials have excellent electrochemical performance, and a specific capacitance can reach680.29F / g when a current density is 1.0 A / g.

The invention relates to the technical field of heat conductive electronic material preparation, in particular to a preparation method of a heat conductive silicone rubber slice. The preparation method comprises the following steps of by taking an ethylene-vinyl acetate copolymer, a heat conductive graphite slice, EPS foam particles and vinyl ester resin as raw materials to prepare a foaming sheet, mixing the ethylene-vinyl acetate copolymer, glass fibers, expanded graphite powder and the like, performing heating to obtain glass fiber resin, coating the surface of the foaming sheet with the glass fiber resin for hot pressing vulcanization to obtain the heat conductive silicone rubber slice. In the preparation method, a polar group and an active group in epoxidized soybean oil enable acrylate matrix resin to express excellent bonding strength, electrical insulation performance and high temperature resistance; a benzene ring structure of the EPS foam particles endow the matrix resin withheat resistance and rigidity, and the effect that the viscosity cannot be lowered at high temperature is achieved; through the coupling effect, the compatibility of the graphite slice and the ethylene-vinyl acetate copolymer is improved; and through expanded and relaxed heat conductive graphite slice, the heat conductive area of the silicone rubber slice is increased, and the silicone rubber slice has a wide application prospect.

The invention discloses an indigo carmine colorant as well as a preparation method and applications thereof. A mixed solution of indigo carmine and antioxidants contains 0.1%-1%(weight / volume percent concentration, g / 100ml) of indigo carmine, the antioxidants are selected from one or combinations of ascorbic acid, tea polyphenols and phytic acid, and the amount of addition is 0.05%-0.5%(weight / volume percent concentration, g / 100ml). The indigo carmine colorant has advantages as follows: a product is greatly improved in stability, is easy to use and store, and has a good clinical effect; the safety performance is high, and the clinical risk is low; the operation is simple. A prepared indigo carmine solution can be directly used in clinical treatment, dilution and other additional operations are not required, a clinical operation process is greatly simplified, and defects of a colorant obtained with an immediate preparation and use method in the prior art are solved.

The invention discloses a device and a method for analyzing the flavour of blended vinegar. The device comprises a data acquisition device and a computer, wherein the data acquisition device comprises a microprocessor, a sample chamber, a gas chamber, a gas sensitive sensor array and a first gas pump; an upper communication pipe and a lower communication pipe are arranged between the sample chamber and the gas chamber; a gas inlet is formed in the gas chamber and connected with the first gas pump via a first gas inlet pipeline; a gas outlet and a second gas pump are arranged on the upper communication pipe; a fourth electromagnetic valve is arranged at a top inlet of the gas chamber; a gas outlet electromagnetic valve is arranged at the gas outlet; and the gas sensitive sensor array is arranged in the gas chamber. According to the method, volatilization gas of the blended vinegar is detected via the gas sensitive sensor array, response signals generated by the gas sensitive sensor are sampled by the microprocessor, and the computer processes a sampling value and judges the flavour of the blended vinegar. The device and the method can differentiate the flavours of different kinds of blended vinegar, so as to bring convenience for manufactures to analyze and manage the flavour of the blended vinegar.

The invention belongs to the field of seed vitality measurement and discloses a seed vitality measuring system based on a laser absorption spectrum technique and a method. The seed vitality measuringsystem comprises a tunable semiconductor laser system and an optical absorption tank, wherein the tunable semiconductor laser system is used for providing tunable wavelength laser; the optical absorption tank is sealed and internally provided with quantum to be measured; an incidence light hole and an outgoing light hole are formed in the optical absorption tank; an incidence optical fiber is hermetically mounted on the incidence light hole; a detector is hermetically mounted on the outgoing light hole; tunable wavelength laser is fed into the optical absorption tank through the incidence optical fiber, is reflected and oscillated in the optical absorption tank, in addition is capable of absorbing an O2 gas and / or a CO2 gas for reflecting vitality of a seed to be measured, and later is received by the detector, and then an O2 gas absorption spectrum optical signal and / or a CO2 gas absorption spectrum optical signal. By adopting the system, seeds do not need to be pretreated, a microenvironment of seed respiration is not damaged, in addition, the system has the advantages of rapidness, convenience, high sensitivity and high precision.

The invention relates to an in-place measurement device for gas. The device is characterized by comprising a laser, a detector, an analysis unit, a purging unit and a calibration unit, wherein the frequency of output light corresponds to absorption lines, namely an absorption line I and an absorption line II of gas to be detected; at the unit concentration and in a unit optical path, the absorption rate of the gas to be detected in detected gas is not lower than 5 times that of the gas to be detected in purging gas due to the temperature difference between the detected gas and the purging gasat the position of the absorption line I; the detector is used for receiving measurement light which passes through the purging gas and the detected gas and corresponds to the absorption line I or calibration light which passes through calibration gas of the gas to be detected and corresponds to the absorption line II; the analysis unit is used for acquiring the content of the gas to be detected in the detected gas according to a signal of the detector; the purging unit is used for providing gas to purge a measurement light path outside the area of the detected gas, and the purging gas comprises the gas to be detected; and the calibration unit comprises the calibration gas of the gas to be detected. The device has the advantages of high measurement accuracy, low cost and the like.

The invention discloses a device and a method for analyzing the flavor of pig feed. The device comprises a data acquisition device and a computer, wherein the data acquisition device comprises a microprocessor, a sample chamber, an air chamber, a gas sensor array and a first air pump; an upper communicating pipe and a lower communicating pipe are arranged between the sample chamber and the air chamber; the air chamber is connected with the first air pump through a first air inlet pipeline; a first solenoid valve and an activated carbon filter screen are arranged on the first air inlet pipeline; an air outlet and a second air pump are arranged on the upper communicating pipe; an air outlet solenoid valve is arranged on the air outlet; the gas sensor array is arranged in the air chamber. Volatilized gas of the pig feed is detected through the gas sensor array, the microprocessor is used for sampling a response signal generated by the gas sensor; the computer is used for processing the sampling value; the dynamic classification parameter delta is calculated through a nonlinear stochastic resonance algorithm and a nonlinear self-calibration dynamic classification model, so that the flavor of the pig feed is judged. The device and the method can distinguish flavors of different kinds of the pig feed.

The invention discloses an extraction method for humic acid, that is, a nanofiltration+two-stage ultrafiltration extraction method of humic acid in MBR+NF concentrated liquor of a sanitary landfill percolate of municipal solid wastes or a mixed percolate of a sanitary landfill and an incineration power plant. The method is advance, practical, economic, high in reduction degree, high in recovery rate of humic acid, good in operating stability and suitable for extracting humic acid in the MBR+NF concentrated liquor of the percolate with low concentration of bivalent salt ions, in particular loworganic matters and low salt content.

The invention discloses an on-line detection method and device for ultralow-concentration ammonia gas content. In the ammonia gas trapping process, gas to be detected passes through a spiral pipe trapping trap under the action of a vacuum diaphragm pump, and an ammonia gas component in the gas to be detected is absorbed in absorption liquid to obtain a solution to be detected containing ammonium ions. In the presence of sodium nitroprusside, ammonium ions, salicylic acid and sodium hypochlorite react to generate a blue complex indophenol blue; a liquid-phase sample to be detected enters a total-reflection long-optical-path online flow cell, and online detection of the content of ammonia gas in the gas to be detected is achieved according to the absorbance. The on-line detection device adopts an electromagnetically driven micro pump and a constant-flow peristaltic pump to accurately control a micro solution; daily maintenance is reduced; and rapid, on-line and continuous measurement ofultra-low to medium-high concentration ammonia gas is realized.

The invention belongs to the technical field of special rubber, and particularly relates to nuclear radiation resistant vulcanized rubber and a preparation method thereof. The radiation-resistant rubber composition comprises the following raw material components in parts by weight: 80-90 parts of EPM rubber, 30-50 parts of a radiation-resistant auxiliary agent, 40-60 parts of a filling agent, 3-8 parts of a vulcanizing agent, 1.5-3.0 parts of an accelerant, 10-20 parts of a plasticizer and 2-5 parts of an anti-aging agent, and is characterized in that the radiation-resistant auxiliary agent comprises lead oxide, bismuth oxide, barium sulfate and / or antimony trioxide. The nuclear radiation resistant vulcanized rubber obtained according to the preparation method has stable protection and shielding performance on nuclear radiation in the actual use process, also has excellent comprehensive physical performance, and has the advantages of stable performance, safety and reliability.

The invention discloses a stabilizer of hydrogen peroxide disinfectant in a dairy beverage aseptic packaging device and belongs to the technical field of chemical stabilizers. The stabilizer comprises, by weight, 20-30% of chelation or complexation type stabilizer, 1.8-8% of water-retaining agent, 0.1-1% of metal corrosion inhibitor, 0.1-1% of surfactant and the balance purified water. According to the stabilizer of the hydrogen peroxide disinfectant in the dairy beverage aseptic packaging device, due to the synergistic effect of all components, the effect of hydrogen peroxide in packing material disinfecting application is particularly obvious. Thus, consumption of hydrogen peroxide in packing material disinfection application is obviously reduced, the use cost is obviously reduced, safety is improved, the maintaining and passivating period of the aseptic packaging device is prolonged, and use is simple and convenient.

The invention provides equipment and a method for producing tetramethyl ammonium hydroxide by using a continuous process, and relates to the technical field of tetramethylammonium hydroxide production. The equipment and method for producing the tetramethyl ammonium hydroxide by using the continuous process are characterized in that an electrolytic cell structure with one membrane and two chambersis adopted, as for the anode part, an anode liquid is supplemented through an anode liquid intermediate tank, so that the concentration of the anode liquid in an anode chamber is small in change amplitude in the electrolysis process; and as for the cathode part, through a nanofiltration device, the concentration of the tetramethyl ammonium hydroxide in a cathode liquid is concentrated by utilizingthe interception capability of a nanofiltration membrane to the hydroxyl, the concentration ratio is controlled, the concentrated liquid enters a product tank, and a penetrating fluid enters the cathode liquid, so that the concentration change amplitude of the tetramethyl ammonium hydroxide in the cathode liquid is small. According to the equipment and the method for producing the tetramethyl ammonium hydroxide by using the continuous process, the technology and the equipment are simple, the occupied area of a reactor is small, and the equipment investment is small; and the concentration change amplitude of the anode liquid and the cathode liquid in the electrolysis process is small through blending of the anode liquid intermediate tank and the cathode liquid nanofiltration device, the process is stable, the damage to the ion membrane is small, and the service life of the membrane can be prolonged.

The invention discloses a method for removing acetic acid in a sucrose-6-acetate solution and application thereof. The method comprises the following steps: under a certain residence time condition, in tower equipment for removing acetic acid, vapor formed by tertiary amide of certain temperature is in contact with the sucrose-6-acetate solution containing acetic acid in a continuous countercurrent manner, thereby achieving the purpose of removing the acetic acid from the sucrose-6-acetate solution. The method provided by the invention can be applied to the synthesis of sucrose-6-acetate and sucralose, has the advantages of simple process, high acetic acid removal rate, no damage to a sucrose-6-acetate product, continuity and the like, and is very suitable for industrial production.

The invention discloses a method for recycling and processing pickling waste liquid containing iron and aims to overcome defects that a currently common pickling waste liquid processing method is large in discharge quantity and high in processing cost, and the concentration of the recycled acid liquid is lowered greatly. The method is characterized in that by controlling process parameters, quaternary ammonium salt and Fe<3+> ions are allowed to generate precipitates insoluble in acid in an acid environment, the metal ions are effectively separated from the acid liquid, and pickling solution recycling is achieved. The method is simple in processing process, low in equipment requirement, low in investment cost, small in acid concentration change before and after the processing, capable of recycling the waste acid and Fe<3+>, capable of achieving zero emission in the whole processing process, and extremely high in environment value and economic value.

The invention discloses a normal-temperature oocyte preservation device. The invention relates to the technical field of oocyte preservation. The problem that in the prior art, an oocyte preservationdevice is prone to damaging oocytes is solved. Technical key points are that: the preservation device comprises a box body, wherein the box body is divided into a lower box body and an upper box body;the lower box body is hermetically connected with the upper box body; a placing groove is formed in the lower box body; the placing groove is connected with a micro-flow pump and a nutrient solutioncollecting groove through a circulating pipe; the micro-flow pump is communicated with a fluid storage box; the micro-flow pump is used for conveying oocyte preserving fluid in the fluid storage box to the placing groove through the circulating pipe and keeping the oocyte preserving fluid in the placing groove flowing; an oocyte preservation tube is arranged in the placing groove, permeation holesare further formed in the surface of the oocyte preservation tube, multiple groups of oocyte preservation tubes are arranged, and an oocyte is placed in each oocyte preservation tube; according to the invention, the oocytes are prevented from being damaged in the preservation process.

The present invention relates to the field of food, and discloses a process for extracting erythritol. The process comprises the steps of S1, ceramic membrane filtration, S2, nanofiltration filtration, S3, nanofiltration liquid grading treatment, and S4, concentration crystallization. The invention also discloses a system for extracting erythritol, which comprises a primary ceramic membrane filtration device, a nanofiltration membrane purification device, a resin separation and purification device and a concentration and crystallization system which are connected with one another through pipelines. A grading device capable of grading the nanofiltration dialysate to different outlets according to the concentration value of the nanofiltration dialysate is arranged on a nanofiltration dialysate outlet of the nanofiltration membrane purification device, and a plurality of grading outlets are formed in the grading device. According to the invention, the nanofiltration dialysate is subjected to grading treatment according to the solubility by adopting the grading device, and enters different treatment procedures according to different concentrations, so that the concentration change of the system is small, the later process is stabilized, the utilization rate of feed liquid is greatly improved, the energy consumption of subsequent evaporative crystallization is reduced, and meanwhile, the water consumption in the elution process is also reduced.

The invention relates to the technical field of cleaning machines, and discloses an efficient vacuum cleaning machine which comprises at least one first cleaning chamber and a second cleaning chamber, wherein the second cleaning chamber is arranged on the same side of each first cleaning chamber, an injection opening is formed in the second cleaning chamber, and the injection opening is used for introducing cleaning liquid into the second cleaning chamber. The vacuum cleaning machine further comprises a moving mechanism, a filtering mechanism and a circulating mechanism, wherein the moving mechanism is used for driving a workpiece to sequentially pass through the first cleaning chambers and the second cleaning chamber, the filtering mechanism comprises at least one filtering piece, each filtering piece is used for filtering impurities in one first cleaning chamber, each filtering piece completes filtering by means of the process that the liquid level of the cleaning liquid in the corresponding first cleaning chamber is lowered, the pore spaces of the filtering holes of the filtering pieces are sequentially reduced in the direction close to the second cleaning chamber, and the circulating mechanism is used for lowering or raising the liquid level in the first cleaning chamber or the second cleaning chamber to complete filtering. The efficient vacuum cleaning machine has the characteristic that the cleaning quality is convenient to control.

The invention discloses an advanced operating method for an underflow pump of an ore pulp pipeline transportation system, belonging to the technical field of pipeline transportation. The underflow pump delivers acceptable concentration of ore pulp concentrated by a concentration basin to an ore pulp storage tank; when the concentration of the ore pulp is not acceptable, the underflow pump returns the ore pulp to the concentration basin for continuous concentration; when the ore pulp pipeline transportation system does not realize the designed capacity, an HV1084 valve at a height of 16 meters needs to be operated frequently to switch the process; the HV1084 valve is moved to a height of 6 meters from the height of 16 meters; the acceptable concentration of ore pulp is continuously poured into an agitating tank according to the change of the concentration of underflow; and the operating method is summarized as a nine-word operating method, namely observing the ore, seeing the concentration and regulating the frequency. The improved operating method for the underflow pump has good economic benefit and good social benefit, and totally 188,772 Yuan of capital can be economized every year; and meanwhile, with the operating method, the labor intensity of workers is lowered, and a good operating experience is provided for the operation of the underflow pump in future in case the iron concentrate pulp pipeline transportation system does not realize the designed capacity.

The present invention provides a secondary battery having a novel structure in which unit cells which become thinner in one direction are radially assembled, and a device comprising the same. When a collector having a through-hole in the thickness direction is to be applied, the variation range of the concentration of an electrolyte in the battery is reduced, helping to improve the performance of the battery.