295results about How to "Short conversion time" patented technology

The invention relates to an intelligent home appliance control system based on speech identification technology and a wireless sensing network. The intelligent home appliance control system is characterized in that the system comprises a speech identification module and a wireless transmission module based on a Zigbee network; the speech identification module is provided with wireless audio input equipment connected with a PC computer and a speech identification unit; audio input data of a user is received through the audio input equipment, is processed through the speech identification unit and is converted into a corresponding control instruction; the wireless transmission module adopts a Zigbee communication protocol and comprises a serial port communication circuit, a network coordinator, each sub-node and a working state conversion circuit; the control instruction from the user is subjected to data processing through the serial port communication circuit and is used for controlling the corresponding working state of each sub-node; and data information of each sub-node in the network is displayed in the PC computer. The intelligent home appliance control system has safe and reliable operation, convenient installation, simple and convenient use and low power consumption of the system and realizes the controlling intelligence of home appliances.

The invention discloses an enzyme conversion method for preparing gamma-butyric acid. The preparation method comprises employing two mixed acidic amino acids of L-glutamic acid and L-aspartic acid as raw material, mixing the cells of Escherichia.coli AS1.505 with highly active L-glutamic acid decarboxylases and the conversion liquid containing the mixture of L-glutamic acid and L-aspartic acid, implementing enzymatic reaction under the temperature of 28~45íµ, then separating the conversion products by isoelectric point crystallization process or isoelectric point crystallization and ion exchange resin combined method to obtain high purity gamma-butyric acid and L-aspartic acid. The invention solves the problem of the highly effective separation of two acidic mixed amino acids, and obtains gamma-butyric acid with higher additional value, and has advantages of low price, simple operation, short conversion time, and low production cost.

A method, computer readable medium and apparatus for converting color image resolution including inputting an image enlarging ratio, inputting target pixel data of an image in a first color space to be enlarged in a sequence, sampling reference pixels including the target pixel and pixels at least one of which links to the target pixel, and converting the reference pixel data into a second color space data. Other functions include extracting image feature quantities from the reference pixel data, selecting one of a plurality of pixel multiplying methods according to the extracted image feature quantities, multiplying the target pixel by the selected image multiplying method with an integer value based on the input image enlarging ratio, and outputting pixel data that have been generated by the target pixel multiplying step in a sequence.

A device for applying a spot embossing pattern to a web of multi-ply tissue paper being processed in a paper converting machine comprises a marrying roll and a spot embossing unit cooperating and being positioned against the marrying roll. The spot embossing unit comprises a spot embossing roll with a raised embossing pattern on its circumferential surface. The at least two plies of tissue web are combined with a marrying roll and pass between the marrying roll and the spot embossing unit.

The invention discloses a method for preparing hydroxytyrosol by boiling and hydrolyzing. The method comprises the following steps of: firstly, preparing plant extract, adjusting pH of the plant extract to be 1-3, and boiling and hydrolyzing the plant extract for 1-4 h under normal pressure; after cooling, adjusting the pH to be 6.8-7.2, filtering and taking supernate; sampling the supernate on macroporous adsorption resin, after adsorbing, washing and removing impurities by using water, eluting by using 10-90% by volume of methanol or ethanol, and collecting eluent; and condensing and recovering the methanol or the ethanol to obtain hydroxytyrosol extract. According to the method disclosed by the invention, the conversion time of the hydroxytyrosol is greatly shortened; the conversion rate is increased; the production cycle is shortened as a whole; the production cost is saved; after hydrolyzing, adjusting to be neutral and placing the sample on a column, the supernate is washed and purified by using water and then eluted by using the methanol or the ethanol; and, instead of placing the sample on the column and eluting by using acid liquid, the disadvantage that resin equipment can be corroded is overcome.

The invention discloses a micro-nano structure interface induced growth method for an organic metal halide perovskite film of a solar cell, and the method is characterized in that the a solvent coordination-anti-solvent extraction method is employed for preparing a metal halide film with a micro-nano structure interface, and then the micro-nano structure interface is used for inducing the quick conversion and growth of perovskite crystal particles, so as to prepare a high-quality perovskite film and a high-performance solar cell. According to the invention, the coordination solvent in the solvent coordination-anti-solvent extraction method has the strong coordination capability for metal halide, so the crystallization velocity can be reduced. The anti-solvent extraction can avoid the self-organization growth, and achieves the quick deposition to form the film with the micro-nano structure interface, thereby greatly improving the reaction rate of diffusion of organic halide molecules to the interior, and achieving the quick and complete conversion of perovskite. The method does not need to carry out the high-temperature annealing and the vacuum technology, and facilitates the reduction of manufacturing cost.

The invention relates to a livestock and poultry house environment monitoring system based on the Internet of Things technology and a working method thereof. The system comprises a monitoring and executing module, a data transmission module, an upper computer monitoring platform 1 and a mobile terminal. The monitoring and executing module is arranged in a livestock and poultry house and comprises a monitoring module 6 and an executing module. The data transmission module is a ZigBee wireless sensing module. The upper computer monitoring platform 1 comprises a real-time display module, a data storage module, a control module and an alarm module. The working method of the system includes the steps of information acquisition, data fusion, fuzzy control and instruction output. An optimal weighted data fusion algorithm is adopted for the data fusion step. The system and the working method thereof have the advantages that the system is supported by the Internet of Things technology and the fuzzy control technology, a ZigBee wireless sensing network, a TCP / IP network and a mobile communication network are fully utilized, and the intelligent livestock and poultry house environment monitoring system is provided. The system achieves access of the mobile phone terminal to ZigBee network monitoring data through an SIM900A module and the upper computer monitoring platform 1.

The invention discloses a gene segment provided with coded and highly-active trans-4-hydroxyl-L-prolyl hydroxylase and an application thereof. Gene codons of trans-4-hydroxyl-L-prolyl hydroxylase (GenBank ID: BAA 20094.1) in Dactylosporangiumsp. RH1 are optimized to obtain a p4hyd gene; the optimized p4hyd gene is truncated to obtain a P4Hyd1-257 gene; recombinant plasmids including pET-M-3C-P4Hyd and pET-M-3C-P4Hyd1-257 are built respectively, prokaryotic expression is performed through escherichia coli, and trans-4-hydroxyl-L-proline is produced in a conversion manner by utilizing thalli as an enzyme source. An experimental result shows that L-proline is taken as a substrate, compared with pET-M-3C-P4Hyd, the highest conversion rate of trans-4-hydroxyl-L-proline generated by pET-M-3C-P4Hyd1-257 in the conversion manner is increased from 91.4% to 97.4%, the conversion time is shortened from 80 hours to 60 hours, so that the conversion rate is improved remarkably, and the conversion time is shortened remarkably. The gene segment provided with coded and highly-active trans-4-hydroxyl-L-prolyl hydroxylase and the application thereof can be used for producing L-proline by a bioconversion method, and have better industrial application prospect.

The invention discloses a low-power consumption and low-distortion signal generator based on a direct digital frequency synthetic technology, comprising a programmable logic device, a stage waveform signal generating circuit, a compensating sawtooth waveform signal generating circuit and an addition and subtraction arithmetic device. Based on the direct digital frequency synthetic technology, the programmable logic device respectively outputs a digital amplitude signal of a target waveform signal and a digital amplitude difference signal matched with the digital amplitude signal; then the two signals are synchronously output to the stage waveform signal generating circuit and the compensating sawtooth waveform signal generating circuit; a stage waveform voltage signal Vof and a sawtooth waveform compensating voltage signal Voc which are synchronous to each other on a time domain are output to the addition and subtraction arithmetic device; a sawtooth waveform is compensated through superposition to finally acquire a folding line waveform signal. Without increasing a sampling frequency, the low-power consumption and low-distortion signal generator can acquire signals with lower distortion to solve the conflict between the signal distortion and the sampling frequency in the prior art. The invention is suitable for the application fields where have higher requirements on signal distortion degrees, clock frequencies and power consumption and effectively suppresses stage waveform distortion inevitably brought in the application of direct digital frequency synthetic smooth waveform signals.

Disclosed are a device and method for the simultaneous fusion of multiple plastic pipe sections. A plurality of pipe sections may be rigidly held, faced off, heated, and joined at the same time using a single piece of equipment. The inventive process allows increased throughput of the fusion process without significant additional costs.

The invention belongs to the technical field of medicine and biology and particularly relates to a method for preparing L-tryptophan by enzymatic conversion. The method, of which L-tryptophan is prepared from mixed amino acids containing L-serine, comprises the following steps: mixing the high-activity genetic engineering bacteria of L-tryptophan synthetase or L-tryptophanase with the conversion solution of the mixed amino acid containing L-serine; carrying out the enzymatic reaction at the temperature of 30 to 45 DEG C; and then, separating the converted products by the isoelectric point crystallization method or the method combining isoelectric point crystallization and ion exchange resin to obtain high-purity L-tryptophan. The method solves the problems of the separation and overall development of L-serine in the mixed amino acids by obtaining L-serine products with wider applicable range and higher added value, therefore, the invention has the advantages of wide material availability, low price, convenient operation, short conversion time, low production cost and the like.

The invention relates to a solenoid valve (16, 36) for actuating a fuel injector (10). The latter comprises a valve piece (14), in which a control chamber (86) is formed. Its outlet (82) can be opened or closed by way of a closing element (22) which can be actuated via the solenoid valve (16, 36). An armature plate (18) is received in a hydraulically damped manner (72, 56, 73) on an armature pin (20) which has a central outlet (62).

The invention provides a six-face visual inspection and material discharging sorting mechanism. A hexahedron inspection machine is provided with a micro-miniature product guide mechanism, so that thesituations of material inclination and material deviation in the detection process are effectively reduced, the material inclination and the material deviation are reduced to be within the range of 1%, meanwhile, six photographing mechanisms including a top view detection unit, a bottom view detection unit, a rear view detection unit, a front view detection unit, a right view detection unit and aleft view detection unit are arranged to photograph all faces correspondingly, each group of high-speed cameras have two directions and are adjusted by adopting a first precise sliding table and a second precise sliding table, meanwhile, high-definition lenses of different multiples can be compatible in the each group of high-speed cameras, sufficient photo data are provided for the detection process, the detection precision is improved to 0.01 mm, equipment normally operates at 8000 PCS / min, the working efficiency and yield are improved, meanwhile, automatic separate-surface detection can beconducted on various components, model conversion time is short, operation is convenient, and the maintenance cost is low.

The invention discloses a method for preparing GABA (gamma-aminobutyric acid) by using a biotransformation method, and belongs to the technical field of preparation of GABA. The method comprises the following steps: adopting lactobacillus brevis CGMCC NO.3414 as an original strain; carrying out enrichment culture and thallus collection; resuspending the thallus in a scientifically compounded buffer solution of a mixture of L-sodium glutamate and glutamic acid; adding Na2B4O7.10H2O or MgSO4 having relatively strong activation for the endoenzyme generated by the strain, so as to enable the activity of endoenzyme to be maximally given into play; catalyzing and converting the mixture of L-sodium glutamate and glutamic acid into GABA, wherein the content of GABA in the conversion solution is 45.74-202.18 g / L, the molar conversion rate of the substrate is 95.92-99.75%, and the thallus can be repeatedly used for 8 times. According to the method, the product quality and yield are improved, the environment is protected, the method is relatively good in economic and social benefits and applicable to scale production, and industrial popularization is facilitated.

Disclosed are a device and method for the simultaneous fusion of multiple plastic pipe sections. A plurality of pipe sections may be rigidly held, faced off, heated, and joined at the same time using a single piece of equipment. The inventive process allows increased throughput of the fusion process without significant additional costs.

An apparatus is provided for compensating for such deformations as occur in operation in first and second clamping surfaces intended for a tool in a press. The clamping surfaces are reciprocally moveable towards and away from one another in order to move a first and second part of the tool towards and away from one another, and the first and second tool parts have a first and second abutment surface for abutment against the first and second clamping surfaces and the deformations cause uneven pressure in at least one contact region between the tool and the clamping surfaces. According to the present invention, there is disposed, in at least one contact region between a clamping surface and an abutment surface, a power unit which, on activation, is operative to press, away from the clamping surface located in the contact region at least a part of the abutment surface of the tool located there.

The invention discloses Lactobacilus fermentum, which is classified and named (Lactobacilus fermentum) NXTag-1 and is preserved in China General Microbiological Culture Collection Center, wherein a preservation number of the Lactobacilus fermentum is CGMCC No.2921. The invention also discloses a method for preparing D-tagatose by utilizing the Lactobacilus fermentum, namely a strain is grafted in a sterile culture medium containing a carbon source, a nitrogen source, inorganic salt and water, cells containing L-arabinose isomerase are obtained through the culture, and further D-galactose is transformed into the D-tagatose by adopting the dissociative or immobilized cells. The Lactobacilus fermentum can efficiently transform the D-galactose into the D-tagatose, the concentration of the D-tagatose in a transformation liquid can reach 45g / L, the transformation ratio of the D-tagatose to a substrate can reach more than 50 percent, and no side product generates.

The invention provides a method for simultaneously preparing trehalose and glucolactone. The method comprises the steps that amylase is used for converting starch into maltodextrin; a branch of the maltodextrin is removed, and maltooligosyl trehalose synthase and malt oligosaccharyl trehalose hydrolase are used for obtaining trehalose; glucose oxidase and catalase are fed, and generated glucose is converted into sodium gluconate; saccharifying enzymes are added, after saccharifying is finished, glucose oxidase and catalase continue to be fed for reacting, and when the glucose content is lower than 1 g / L, reacting is finished; enzyme deactivation, decoloration, filtering and impurity removal are carried out. According to the method for simultaneously preparing trehalose and glucolactone, the conversion time of trehalose can be obviously shortened, the conversion rate is obviously increased to be larger than 78%, and meanwhile glucolactone can be produced.

The invention discloses a genetic engineering bacteria used for high efficient production of mycose, and a method used for producing mycose by using the genetic engineering bacteria. Preservation number of the genetic engineering bacteria is CCTCC No.M2013237. The method comprises following steps: A) the genetic engineering bacteria is subjected to fermentation cultivation, and bacterial cells are collected; B) the bacterial cells are broken, MTSase and MTHase are released so as to obtain a water solution containing MTSase and MTHase; and C) amylose or straight-chain dextrin is converted into mycose by using the water solution containing MTSase and MTHase. The genetic engineering escherichia coli is capable of converting amylose or straight-chain dextrin into mycose efficiently; the conversion rate is more than 85%; enzyme cost is low; conversion time is short; technology operation is simple; and large-scaled industrialized application prospect of the method is promising.

An arrangement and method for producing a camshaft comprised of a shaft (2) and of a number of cams (3, 3′, 3″) pressed thereon comprises at least two machining stations (11) of which at least one is provided in the form of knurling station (4) and at least one is provided in the form of a press-on station (5). A shaft (2) is firstly fixed in a brandishing station (4) with the aid of a positioning element (7) fastened to the shaft, and the shaft is subsequently brandished. Afterwards, a cam (3) is pressed onto the shaft (2) in a press-on station (5). To this end, the press-on station (5) comprises a workpiece holder, which corresponds to the positioning element and which serves to provide a holding, particularly to provide an angle-precise holding, of the shaft (2) with the positioning element (7) fastened thereto.

The invention discloses a method for preparing a wear-resistant reflective coating. The method includes: preparing a hydroxide sol; dissolving tetraethoxysilane into ethanol, then dropwise adding water, and dropwise adding hydroxide sol to obtain a second sol; preparing a TiO2 sol; stirring the second sol, and dropwise adding a fifth sol and water in the process of stirring to obtain a sixth sol; heating paraffin containing Span 40 in a water bath, dropwise adding the sixth sol into paraffin oil, stirring and filtering to obtain gel particles; sintering the gel particles to obtain reflective glass beads; washing the reflective glass beads, dipping and firing to obtain modified glass beads; adding water-soluble acrylic resin, waterborne polyurethane resin and waterborne alkyd resin into the water, mixing well, adding the modified glass beads, calcined kaolin, diatomite, fumed silica and a silane coupling agent, and evenly mixing; and then adding zinc borate, nano magnesium hydroxide, a toughening agent, an antifoaming agent, an anti-mildew agent and a pigment, and stirring evenly to obtain the wear-resistant reflective coating.

The invention provides escherichia.coli with high L-aspartase yield. The collection number of the escherichia.coli collected in the China General Microbiological Culture Collection Center is CGMCC No.5450. The activity of a shake flask-fermented biotransformation enzyme (L-aspartase) can be up to 4,200 U / ml; the activity of a biotransformation enzyme fermented with a 2-ton tank can be up to 4,500 U / ml, which is increased by over 30 percent in comparison to the activity of a fermentation strain; and fumaric acid is biologically transformed directly and efficiently by using free cells with high transformation activities to generate L-aspartase; and when the concentration of fumaric acid is 18.5-20.0 percent, the biological transformation time of a 20-ton tank is shortened by one third in comparison to strain deriving time, and is 6-8 hours, the transformation rate is over 97.5 percent, and the transformation efficiency is higher that of the same level.

The invention discloses a method for synthesizing betulic acid by carrying out biocatalysis on betulin, comprising the following steps: (1) preparing armillaria luteo-uirens ZJUQH wet cells; (2) adding armillaria luteo-uirens ZJUQH wet cells into ionic liquid or a two-phase system for pre-culture to obtain a pre-culture system; (3) adding betulin solution in the pre-culture system for fermentation culture for 6-24 hours at 25-30 DEG C to obtain transformed culture solution; (4) processing the transformed culture solution to obtain betulic acid. The two-phase system is mixed solvent of ionic liquid and normal hexane, or mixed solvent of ionic liquid and phosphoric acid buffer solution. Compared with a conventional method, the inventive method has higher product yield, shorter catalytic reaction time, simple product separation, lower volatility of ionic liquid system, better biocompatibility and no pollution to the environment.

A distributing device and a method for distributing objects from a supplying device. Said distributing device being configured to deliver the objects during a delivery clock pulse in groups of m objects, to a first receiving device and to a second receiving device, said receiving devices jointly receiving the group of m objects during a reception clock pulse, and the m objects of a group being variably divided, between different reception clock pulses, into a first number m1 of objects delivered to the first receiving device and a second number m2 of objects delivered to the second receiving device.

The invention discloses an adaptive maximum intermediate frequency energy tracking radar receiving system, and the system comprises a radio frequency front end, a triggering board, an intermediate frequency amplifier board, and a radar terminal. The radio frequency front end comprises a low-noise amplifier, a double-balance frequency mixer, and a local oscillator. The triggering board comprises a microprocessor, a programmable gate array, a signal buffering processing module, an analog-digital conversion module, and a digital-analog conversion module. The intermediate frequency amplifier board comprises an energy voltage conversion circuit, a low-noise intermediate frequency amplification circuit, a band-pass filter circuit, a logarithmic amplification detection circuit, and a push output circuit. The radar terminal comprises a terminal processing display module. The invention provides a brand-new receiving system based on maximum intermediate frequency energy tracking, completely changes a mode of automatic frequency control of a conventional navigation radar receiving system, and effectively solves a problem that a conventional mode of frequency tracking causes the decrease of capability of finding a small object because of the frequency spectrum change of a radar transmitter magnetron. The digitalization of the radar receiving system improves the reliability and expansibility of the radar receiving system.

The invention discloses a process for extracting a theaflavin product, and relates to the technical field of the deep processing of tea products. In order to solve the problems of excessive oxidization and low yield caused by the uncontrolled consecutive reaction in traditional in-vitro enzymatic oxidization process for the preparation of theaflavin, the invention provides the process for extracting the theaflavin product, which comprises the following steps of: (a) the preparation of a substrate solution; (b) the preparation of an enzymatic catalyst; (c) the preparation of fermentation; (d) the separation of an ester phase; (e) the concentration and phase inversion; and (f) drying. When the process is adopted, the process control of the fermentation process is realized, the conversion rate and specification of the theaflavin product are improved, and the process cost for the follow-up refining and purification is reduced.

The invention provides a CRISPR-Cas9 system-based genome editing vector and an application thereof, belongs to the field of plant genetic engineering and particularly relates to a CRISPR-Cas9 system-based wheat genome editing vector and an application thereof. A CRISPR-Cas9 transformation vector with higher editing efficiency in wheat is obtained through comparing the gene editing efficiency of the transformation vector of a CRISPR-Cas9 system when adopting different Cas9 promoters, different sgRNA promoters and different sgRNA sequence structures. Through the optimized vector, the gene editing efficiency of the wheat crop by using CRISPR-Cas9 is improved; the problems of low mutation rate of the CRISPR-Cas9 vector in the crops, such as the wheat after transformation and difficulty in obtaining of the CRISPR-Cas9 transgenic mutant strain are solved; the transformation time is shortened; the transformation cost is reduced; a better foundation is laid for popularization and application of a CRISPR-Cas9 gene editing system in the crop.

The invention discloses a bioconversion method by using cyclodextrin and the hydrophobic compound of the derivative thereof, belongs to the bioconversion technical field, in particular relates to the bioconversion method by using the cyclodextrin and the hydrophobic compound of the derivative thereof, and provides the bioconversion method by using the cyclodextrin and the hydrophobic compound of the derivative thereof. The method of the invention is particularly suitable for the microbial conversion of hydrophobic compounds, can effectively improve the dissolubility of reaction substrate in aqueous solution, improve the utilization rate and the reaction rate of the substrate, release the inhibition of the substrate and the product to a certain extent, and improve the conversion rate of the product. The invention adopts a conversion system including the cyclodextrin, the special structure of the cyclodextrin ensures the cyclodextrin to have a certain solubilizing power, and strengthens the bioavailability of the substrate.