69results about How to "Does not affect concentration" patented technology

The present invention relates to a two-stage double-zymolyte integrated fermentation productino method of 1,3-propylene alcohol, belonging to the field of biological synthesis production technology of 1,3-propylene glycol. It is characterized by that said invented two-stage seed culture uses glucose and glycerine as mixed double-substrate, and can integrate the two-stage seed culture under the aerobic condition and glycerine anaerobic conversion under the anaerobic condition in same fermentation tank to implement them, and uses the complete consumption of glucose as conversion condition from aerobic to anaerobic fermentation. Said invention can reduce process steps, and can raise utilization rate of equipment, and can shorten into production period.

The invention relates to a method for preparing uniform granular magnesium hydrate by a one-step reaction with ammonia bubbling method. The method uses light fire powder (magnesia) as a raw material, uses ammonia sulfate, ammonium chloride or ammonium nitrate as an intermediate material and obtains ammonia gas and a magnesium salt solution by an ammonia distillation reaction; the ammonia gas and the magnesium salt solution contact in a bubbling reactor and generate a magnesium hydrate precipitation reaction under the action of an added surface active agent; product mother liquor is filtered after being aged for a suitable period of time, filtrate containing the ammonia sulfate, the ammonium chloride or the ammonium nitrate returns to an ammonia distillation system, and a filter cake is washed and dried to obtain a magnesium hydrate product in uniform granular shape and good dispersion state. The process prepares the magnesium hydrate by the one-step reaction with simple operation steps under mild reaction conditions, the product has uniform granular shape and can adjust and control the granular shape by changing the reaction conditions; and ammonium salt and ammonia gas circulate in the process. The invention has low production cost and little pollution, is suitable for mass production, and the product can be used as a raw material for producing high-purity magnesia or a flame-retardant additive of a polymer material.

The invention provides a stirring-free method and a stirring-free device for producing sodium nitrate through continuous conversion. The device mainly comprises an ammoxidation-prepared oxynitride system, a soda ash solution preparing system and a sodium nitrite mother solution conversion system, wherein the sodium nitrite mother solution conversion system mainly comprises a converter tower, a pre-converter tower, an absorption tower, a motor solution storage tank and matched pumps and pipelines. Nitric acid and the mother solution undergo conversion reaction in the converter tower; conversion solution reflows and back washes the bottom of the converter tower; gas of the converter tower is separated by a gas-liquid separator and enters the pre-converter tower; and converted gas and oxygen-mixed air are mixed quantitatively and then the mixture enters the absorption tower for absorption to prepare feed solution. The method and the device have the advantages that: the production of the sodium nitrate can be continuously performed; the reflowing and backwashing of the conversion solution replaces air stirring; in the converted gas absorbing process, the converted gas is added with the oxygen-mixed air in a ratio, the process operation is optimized, and loads of the adsorption tower and subsequent processing procedure are lightened; the production capacity is improved; energy consumption is reduced; NOx emission is decreased; and the method and the device are favorable for environmental protection.

The invention provides a type of fluorescent probes for detecting formaldehyde. The probes have the structures shown as formulas I to IV. Benzene ring correspondingly substituted coumarin is firstly subjected to backflow reaction with Lawson reagents in toluol; an obtained product continuously performs backflow reaction with hydrazine hydrate in ethanol. The fluorescent probes per se provided by the invention do not have fluorescence in the water solution, but can take a specific fast reaction with formaldehyde to produce products with strong fluorescence, so that the specific sensitive detection and quantitative analysis of formaldehyde is realized. The stability is high; the long-time storage use can be realized; the detection signal-to-noise ratio is high; the sensitivity is high; the excellent selectivity is realized; the specific formaldehyde detection in complicated biological samples can be realized; good biomembrane permeability is realized, so that the fluorescent probes can be used for formaldehyde detection in living cells; the detection reaction is fast; the detection result can be given within 1 minutes for formaldehyde in the water solution; during the formaldehyde detection, the formaldehyde concentration in the environment cannot be influenced. The general molecular formulas of the probes provided by the invention are shown as the accompanying drawing.

The invention discloses a method for preparing magnesium hydrate through ammonia spray method. The method comprises the following steps: by using caustic calcined magnesite and ammonium salt as raw materials, carrying out ammonia stilling reaction to obtain an ammonium and magnesium salt solution, wherein the ammonium and magnesium salt are contacted in a spray type reactor and magnesium hydrate precipitation reaction is performed, aging product mother liquor for a proper time, filtering, returning filtrate containing ammonium salt to an ammonia stilling system, washing and drying filter cake to obtain magnesium hydrate product with uniform particle shape and good dispersion state. The process disclosed by the invention is used for preparing magnesium hydrate through one-step reaction, is simple in operation step, mild in reaction condition, uniform in product particle shape, and the particle shape can be regulated by changing the reaction condition. The ammonium slat is circulated with the ammonia in the reaction process, the production cost is low, the pollution is less, and the scale production is realized, the product can be used as production raw material of high-pure magnesium oxide and inflaming retarding additive of polymer material.

The invention discloses a process manufacturing method of a silicon-on-insulator lateral insulated gate bipolar transistor, comprising a P-type doped semiconductor substrate, a buried oxide layer is arranged on the P-type doped semiconductor substrate, an oxide layer is provided with an N-type drift region, a field oxide layer of the silicon-on-insulator lateral insulated gate bipolar transistor belongs to a second-order field oxide layer, and a field board which is formed by a gate extending to the above of the field oxide layer is a second-order field board. The second-order field oxide layer is formed by the steps of depositing the oxide layer, etching and thermal growth. An N-type doped buffer region is formed by implanting high-energy ions for self-alignment of the second-order field oxide layer.

A fatigue driving alarm system comprises a camera and a detection control device which are installed in a vehicle. A microprocessor and an alarm loudspeaker connected with the microprocessor are arranged in the detection control device. The camera and the microprocessor are connected through a communication line. The microprocessor is connected with a vehicle central control system. The vehicle central control system can be used for controlling a brake device of the vehicle. The current state of a driver can be detected by the fatigue driving alarm system according to the motion of the eyes of the driver, the detection control device does not need to make contact with the head of the driver, the attention of the driver is not influenced, the comfort of the driver in the driving process is guaranteed, and the safety of the driver in the driving process is guaranteed.

The invention discloses a device and method for detecting runoff producing positions on a karst slope surface. The two ends of a PVC pipe are arranged in tee joints in a sleeved mode, the PVC pipe is filled with a thin gauze element, a water inlet hole is drilled in the wall of the PVC pipe, two ends of the tee joints are arranged in water storage pipes with sealed ends and pipe caps respectively in a sleeved mode, and a water guide pipe with a pipe plug at the upper end is inserted into each pipe cap and extends to the lower end of the corresponding water storage pipe. Based on slope surface point selection, the device is buried according to slope positions and types of heterogeneous ecological niches; after each rainfall, the runoff producing situation is checked, a water sample is collected, and basic water chemical indexes are measured; the runoff producing possibility of each point on the slope surface in a hydrologic year and the space-time distribution of the water chemical indexes are comprehensively analyzed, and finally judgment on the runoff producing positions on the slope surface is finished. The device for detecting the runoff producing positions on the karst slope surface is simple to manufacture, small in investment, and convenient and rapid to install, solves the problems occurring when a traditional research method is used for detecting the runoff producing positions on the karst slope surface and other areas with discontinuous earth covers, and can provide a technical means for the aspects of reasonable utilization of limited water resources, reasonable distribution of land utilization, vegetation recovery strategies and the like in the areas.

The invention discloses a process for preparing apple vinegar. The process comprises the following steps of: (1) slicing immature green apples, and washing; (2) putting the apple slices and rock sugar into a fermentation tank layer by layer to ensure that one larger gap between every two layers is formed; (3) tightly sealing the fermentation tank, and putting into a shady and cool environment at the temperature of between 20 and 30 DEG C for fermentation; (4) fermenting for 50 to 60 days, unsealing, adding sticky rice vinegar, and fermenting in a sealed manner again; (5) fermenting for 170 to 180 days, stopping fermenting, and thus obtaining the original vinegar; (6) filtering to remove impurities and floaters; and (7) adding honey into the original vinegar, and uniformly mixing, wherein the addition amount of the honey is one tenth of the volume of the original vinegar. The prepared apple vinegar has unique flavor and has the characteristics of apples and vinegar; and the honey with high nutrition value is added, so that the apple vinegar can be used as a condiment and can also be used as a beverage for drinking.

The present invention provides a method for removing endotoxin from primary pure plasmid or protein. Said method includes the following steps: independently using PMXB or joint-using PMXB and TritonX-114, adding organic solvent, mixing them, making phase separation, or firstly using PMXB and Tritonx-114 and adding organic solvent to make phase separation, the adopting combination method of PMXB gel mixing method and / or PMXB gel chromatography to remove endotoxin from plasmid or protein.

The invention discloses helianthus tuberosus ferment as well as a preparation method, preparation and application thereof. The helianthus tuberosus ferment consists of the following raw materials in parts by weight: 60-80 parts of fresh helianthus tuberosus, and 20-40 parts of sugar. The fresh helianthus tuberosus is used as the raw materials, so that on one hand, the prepared helianthus tuberosus ferment has special color and smell and is good in mouth feel, and the fragrances lasts long; and on the other hand, the helianthus tuberosus ferment is rich in special functional components of inulin, polyphenol flavonoid and the like in the helianthus tuberosus, and nutrient components of various natural vitamins, minerals, trace elements, amino acids and the like. According to the preparation method of the helianthus tuberosus ferment, normal-temperature normal-pressure fermentation is adopted, and fermentation microorganisms come from preferable microorganisms in natural raw materials of the helianthus tuberosus, helianthus tuberosus tragon and the like, so that the helianthus tuberosus ferment is green and safe, notable in efficacy and strong in pertinence, has notable efficacy of improving flora of intestinal tracts of human bodies, resisting metabolic diseases of diabetes, high blood lipid and the like, eliminating free radicals, resisting oxidation, enhancing immunity, resisting tumors and the like, effectively strengthens metabolism, and achieves the purpose of strengthening bodies when being used for complementing ferment of the human bodies.

A fatigue driving alarm system comprises a camera and a detection control device which are installed in a vehicle. A microprocessor and an alarm loudspeaker connected with the microprocessor are arranged in the detection control device. The camera and the microprocessor are connected through a communication line. The microprocessor is connected with a vehicle central control system. The vehicle central control system can be used for controlling a brake device of the vehicle. The current state of a driver can be detected by the fatigue driving alarm system according to the motion of the eyes of the driver, the detection control device does not need to make contact with the head of the driver, the attention of the driver is not influenced, the comfort of the driver in the driving process is guaranteed, and the safety of the driver in the driving process is guaranteed.

Provided is a vehicle combination instrument LCD alarm display unit. The vehicle combination instrument LCD alarm display unit comprises a storage module, a control module and a display module, the control module comprises a judgment module, and the display module comprises a main display area and a failure small icon display area. A display method comprises the steps that during driving, firstly,the judgment module conducts alarm type judgment according to whole-vehicle signals collected in real time and acquires an alarm icon in the storage module and sends the alarm icon to the display module, then driving information which the main display area displays is replaced by a big icon of an alarm, and meanwhile an alarm small icon display area displays a small icon of the alarm; after duration time of m, the main display area displays the driving information again, and the alarm small icon display area displays the alarm and small icons of other alarms at the same time; when the alarm is cleared, the small icon of the alarm disappears accordingly. The design not only makes full use of the display areas and ensures the attractiveness, but also achieves effective reminding on the condition that a driver is not distracted.

A high-speed air-exhausting and defoaming stirring machine comprises a stirring machine shell and a transmission component, wherein a feeding inlet is formed in the top of the stirring machine shell; a discharging outlet is formed in the bottom of the stirring machine shell; a stirring rod is arranged in the stirring machine shell and connected with the stirring machine shell through a fixing frame; the transmission component is connected with the stirring rod. The high-speed air-exhausting and defoaming stirring machine is further provided with an exhaust fan which is connected with the stirring machine shell through an exhaust pipe and the exhaust pipe is communicated with the inside of the stirring machine shell. When the high-speed air-exhausting and defoaming stirring machine is used for stirring filling slurry, air in the filling slurry can be exhausted through the exhaust pipe. Therefore, the full package degree of the filling slurry is increased, an air blockage phenomenon is avoided, and conveying efficiency is improved.

The invention discloses an artery plaque digestion method capable of remarkably improving the quality of a single-cell suspension. The kit comprises a collagen hydrolase I, a collagen hydrolase II, acollagen hydrolase IV, a collagen hydrolase XI, calcium chloride, deoxyribonuclease I, a phosphate buffer salt solution, a bovine serum albumin solution and an RPMI 1640 cell culture solution. The invention also discloses an application prospect of the polypeptide in digesting plaque tissues. The invention is invented mainly for digestion treatment of plaque tissues. Through combination of severalenzymes, plaque tissue can be digested into a single-cell suspension with a relatively high activity proportion, and the biological reaction of the plaque tissue is researched on the basis of singlecells, so that the situation that a large number of calcified cell debris, tissue impurities and the like influence a single-cell sequencing machine or a subsequent data analysis result is avoided.

The invention relates to an aluminate hydrate wash liquor digestion method in the manufacturing process of an aluminium oxide by a sintering method, which is characterized in that the method comprises the following steps: the aluminate hydrate wash liquor is evaporated and concentrated, and then enters a seed separation evaporator for evaporation, and serves as ingredients with seed separation mother liquor in the desilication process. In the method, the aluminate hydrate wash liquor in the sintering method drops out of the clinker digestion correction liquor, is directly sent to the evaporator for evaporation after being sprayed, evaporated and concentrated in a clinker kiln cooler, and is used as the seed separation liquor, thus optimizing the digestion, separation and washing techniques of the sintering method, truly realizing the technique requirement of low caustic ratio digestion, reducing the occurrence of secondary reaction of the system, being advantageous for the stability of slurry index and the high-yield and steady operation of the clinker kiln, being capable of decreasing the crude liquor ak value by 0.02 under the condition of unchanged clinker [N / R], improving the net digestion rate of the aluminium oxide by as high as 0.5%, solving the problem of the destination of aluminate hydrate wash liquor fundamentally.

The invention relates to a processing method of concentrated clear apple juice with high color value stability. The processing method comprises the following steps: (1) purchasing , checking, accepting, cleaning and sorting of apples; (2) pretreatment and dicing; (3) pulping, juicing and color protecting; (4) sterilizing and cooling; (5) multi-enzyme co-carrier immobilization clarification; (6) adsorption with nanofiber modified resin ; (7) concentrating; and (8) filling, bottling and sterilizing. The method disclosed by the invention meets market demands, develops the concentrated clear apple juice with a stable color value, has a good cleaning effect, is safe and residue-free, can well remove residual pesticides, kill rot-causing fungi, improve the color and luster of fruit juice and reduce phenolic substances in the fruit juice, achieves the effects of clarification and stabilization, eliminates an ion concentration in the clear fruit juice, improves the quality of the fruit juice, and maintains the original flavor and quality of the apple juice are to the greatest extent.

The invention relates to a preparation method and application of an asphalt test piece. The preparation method for the asphalt test piece comprises the following steps: fusing asphalt and uniformly mixing the fused asphalt and a filling material so as to obtain an asphalt mixture, wherein a weight ratio of the asphalt to the filling material is 1: 1.5 to 1: 2.4; preparing an asphalt mixture bar-shaped material with a length of 80 to 200 mm in a die from the asphalt mixture; and winding a 60-mesh to 300-mesh metal net on the external surface of the asphalt mixture bar-shaped material so as to obtain the asphalt test piece. The invention provides a testing method which better accords with an actual state of the asphalt during combustion of the asphalt mixture and better embodies flame retardation performance of albanite during combustion of pavement asphalt, and the asphalt test piece is applicable to testing of flame retardation performance of any road asphalt and does not pollute analytical equipment and a work environment.

The invention provides a dual ionic single fuel cell. The dual ionic single fuel cell comprises a positive electrode plate, solid electrolyte and a negative electrode plate which are sequentially overlapped, wherein the solid electrolyte is mono-component electrolyte; a plurality of channels with consistent directions and parallel to one another are formed in the solid electrolyte; the directions of the channels are parallel to the length direction or the width direction of the solid electrolyte. Through the dual ionic single fuel cell, water steam generated during reaction of the fuel cell can be conveniently dispersed out of the individual channels specifically arranged in the electrolyte, so that separation of H2O from H2 and O2 can be achieved, the concentrations of the H2 and the O2 in the electrode are not affected, the cell performance can be can improved, and the service life of the cell can be prolonged.

The invention discloses a power generation and refrigeration combined system. A generator absorbs a low-grade heat source. An inlet of a turbine assembly is connected with a steam outlet of the generator. A power generator is driven by mechanical energy output by the turbine assembly to operate to generate electric energy and supply the electric energy to electric energy users. An outlet of the turbine assembly is connected with a steam inlet of an absorber. A solution outlet of the absorber is connected with an inlet of a pump, and an outlet of the pump is connected with a solution inlet of the generator. A solution outlet of the generator is connected with an inlet of a first throttle valve. An outlet of the first throttle valve is connected with an inlet of a separator. A steam outlet of the separator is connected with a hot side working medium inlet of a condenser. A hot side working medium outlet of the condenser is connected with an inlet of a second throttle valve. An outlet of the second throttle valve is connected with a refrigerant inlet of an evaporator, and a refrigerant outlet of the evaporator is connected with the steam inlet of the absorber to cool cold energy user fluid. A solution outlet of the separator is connected with an inlet of a third throttle valve, and an outlet of the third throttle valve is connected with a solution inlet of the absorber. The system provides the refrigerating capacity and ensures the generating capacity.

The invention relates to a separating and recycling method for papermaking pulp sludge, and belongs to the technical field of papermaking. The method comprises the following steps: controlling a concentration of papermaking white water; adjusting and controlling a source of the sludge: performing primary filtration on the sludge through a pulping concentration inclined mesh and a filter nylon mesh, then allowing the sludge to pass through a large inclined mesh nylon mesh to flow to a sewage primary-sedimentation tank, wherein a mesh surface area of the pulping concentration inclined mesh is enlarged, the mesh surface area is enlarged by 33%, a mesh number of the filter nylon mesh is increased, the mesh number is increased by 66%, and a mesh number of the large inclined mesh nylon mesh is increased, and the mesh number is increased by 50%; and performing recycling on the sludge subjected to separation. The method provided by the invention has the following beneficial effects: the high-mesh multi-stage filter screen effectively reduces a concentration of wastewater; in the concentration control system of treating the white water by a paper machine, a type of a forming net is changed,a ternary retention aid and a dry strength agent are adopted, so that a retention rate of fine fibers and fillers is greatly improved, and difficulty of post-treatment of the wastewater is reduced; and an industrial water recycling system for papermaking pulping is ungraded.

The invention discloses an incubator with ultralow carbon dioxide concentration and belongs to the technical field of incubators for animals and plants. The invention aims at solving the problem of how to enable carbon dioxide content in the incubator to be lower than 100 PPm and even lower than 20 PPm. According to the technical scheme, the structure of the incubator with ultralow carbon dioxide concentration is characterized in that a sealed carbon dioxide adsorbent reaction tank is arranged outside a body of the incubator, an air inlet and an air outlet which communicate the carbon dioxide adsorbent reaction tank with the body of the incubator are formed in the carbon dioxide adsorbent reaction tank and the body of the incubator, an adsorbent tray and a variable speed fan are arranged in the carbon dioxide adsorbent reaction tank, the adsorbent tray is filled with a carbon dioxide adsorbent, and the variable speed fan is arranged at the air inlet; a sensor used for acquiring carbon dioxide concentration is arranged in the body of the incubator; and the sensor and the variable speed fan are both connected with a controller of the incubator.

The invention discloses an electronic schoolbag in seamless joint with a traditional classroom. The electronic schoolbag mainly comprises a host, a connection protective jacket, electronic writing paper and a magnetic pen. The electronic writing paper is connected with the host through a data line, the host is provided with an electronic paper display screen made of E-ink or SiPix, a TF card is adopted to serve as an external memory, the host is connected with the electronic writing paper through the connection protective jacket which plays roles in packing and protecting when the electronic schoolbag is put away, a magnetic pen cap is arranged at a position, between the host and the electronic writing paper, of the connection protective jacket and serves as a deposit position of the magnetic pen, and the display screen is a touch screen and is mainly used for function operation. According to the electronic schoolbag, the weight of a traditional schoolbag is lightened, traditional books are electronized, the traditional schoolbag and the books are in seamless joint with the traditional classroom on the basis that use functions of the traditional schoolbag and the books are not changed, the problem that books are brought every year or expensive palm computers are used is avoided by using of electronic books, and educational burdens are relieved.

The invention discloses a biological phosphorus remover used in biochemical treatment of sewage. The biological phosphorus remover comprises a shell (2) and a cover (1), wherein the cover (1) is connected with the shell (2) in a matching manner; a mixed liquid inlet (12) is formed in the shell (2); a sludge filter (3) is arranged inside an inner cavity of the shell (2); a cavity is formed between the sludge filter (3) and the shell (2); an inlet of an ejector (11) is formed inside the sludge filter (3); an outlet tube (4) of the ejector (11) is connected with an outlet (6) through a first valve (5), and is connected with a high-phosphorus water outlet (10) through a second valve (9); the ejector (11) is connected with a compressed air tube (8); a third valve (7) is mounted on the compressed air tube. The biological phosphorus remover is capable of ensuring a phosphorus removal effect, is free of residual sludge discharge, is free of phosphorus removal water treatment drug and is used in the biochemical treatment of sewage.

The invention relates to an anti-fatigue driving safety system. The anti-fatigue driving safety system comprises a camera, a control device and an acoustic-optic alarming device, wherein a microprocessor is arranged in the control device, the camera and the acoustic-optic alarming device are connected with the microprocessor respectively through a communication wire, the microprocessor is connected with an automobile central control system, and the automobile central control system can be used for controlling a brake device of an automobile . By adopting the anti-fatigue driving safety system, the current state of a driver can be detected through the position of the head of the driver, the detection device does not need to be in contact with the head of the driver, the attention of the driver is not influenced, the driving comfort of the driver is guaranteed, and the safety of the driver when in fatigue driving can be guaranteed.

The invention provides a defoamer composition for pharmaceutical production, which is prepared from the following components in parts by mass: 20-60 parts of dimethyl silicone oil, 20-30 parts of polymethylsiloxane, fluorosilicone oil 2‑10 parts, 4‑8 parts of thickener, 10‑15 parts of emulsifier, 10‑100 parts of deionized water. The defoamer composition can efficiently eliminate and suppress foaming, has stable performance, less dosage, is non-toxic and environment-friendly.

The invention discloses a two-stage double-substrate integrated fermentation production method of 1,3-propanediol, which belongs to the technical field of biosynthetic production methods of 1,3-propanediol. It is characterized in that the secondary seed cultivation of the present invention uses glucose and glycerol as a mixed double substrate, and the secondary seed cultivation under aerobic conditions and the anaerobic conversion of glycerol under anaerobic conditions are integrated in the same fermenter , and whether the glucose is exhausted is the condition for the transition from aerobic to anaerobic. The invention can reduce the process steps, improve the utilization rate of equipment, shorten the process cycle without affecting the final concentration of 1,3-propanediol, and avoid the chance of infection of miscellaneous bacteria caused by system conversion.

The invention relates to the technical field of nano materials, in particular to an attapulgite nano material and a preparation method and application thereof. The preparation method of the attapulgite nano material comprises the following steps that attapulgite and a nano material are mixed and then subjected to ultrasonic shock treatment, and the attapulgite nano material is obtained. The preparation method is easy to implement, strong acid is not needed for heating, and pollution to the environment and damage to nano materials are lowered. In addition, the attapulgite and carbon nano tubes can form mixed micelles adsorbed on the surface of the carbon nano tubes, and the micelles mutually repel each other through the electrostatic effect, and the agglomeration and mutual intertwining of the carbon nano tubes are hindered.