47results about How to "Improve utilization rate" patented technology

Elastic members that are integrally joined to a frame member are placed between an outer edge of an electrode unit and an inner edge of the frame member, and in the assembled state of the single cell module, the elastic members are elastically deformed in the thickness direction of a membrane-electrode-frame assembly so that the gap between the membrane-electrode-frame assembly and the separator is sealed in a tightly contact state.

The invention discloses a method for producing medium-chain fatty acid through fermentation of exogenous medium enhanced anaerobic microorganisms. The method comprises the following steps of pretreating an exogenous medium, and performing grinding to obtain exogenous medium solid particles; pretreating anaerobic microorganism inoculum and performing inoculating into a culture medium; inflating synthesis gas into the culture medium, culturing and domesticating anaerobic microorganisms, and performing enriching to obtain anaerobic acid-producing microorganisms capable of realizing carbon chain extension; mechanically and physically mixing the exogenous medium solid particles with the domesticated anaerobic acid-producing microorganisms under an anaerobic condition to obtain a mixed fermentation system for producing medium-chain fatty acid; and inflating synthesis gas into a reactor to obtain the medium-chain fatty acid. According to the method, the anaerobic microorganisms and the exogenous medium form a mixed fermentation system together, and the fermentation system can accelerate the carbon chain extension process of the anaerobic acid-producing microorganisms to produce the medium-chain fatty acid. The fermentation system can maintain stable operation for 2-36 months, an exogenous medium is not liable to inactivate, and anaerobic microorganism death is not liable to cause.

The invention discloses a genetic engineering strain, a construction method and application thereof in xylitol production. The genetic engineering strain includes Escherichia coli and an expression vector transferred into the Escherichia coli. An XR gene is inserted to the downstream of the expression vector's promoter, the base sequence of the XR gene is shown as SEQ ID No.4, the promoter is Trc promoter, the 5' end of the XR gene has RBS from pET30a, and at least one of ptsG, xylA, xylB and ptsF genes in the Escherichia coli is inhibited or knocked out. Through translation initiation rate screening on xylose reductase gene and selection of appropriate RBS and promoter, the XR gene in the genetic engineering strain can obtain high efficiency expression at 30DEG C, and no inclusion body is generated. By knockout of the ptsG gene, the glucose effect is eliminated, and through knockout of the xylA, xylB and ptsF genes, xylose metabolism and xylitol phosphorylation are blocked.

A liquid crystal panel, a driving method thereof, and a liquid crystal display device containing the same are disclosed. The liquid crystal panel of the present invention comprises: a first substrate having a first electrode layer; a second substrate having a second electrode layer opposite to the first electrode layer; a blue-phase liquid crystal layer disposed between the first substrate and the second substrate; and a light-shielding region disposed on the second substrate. When a bias voltage is applied to the first electrode layer and the second electrode layer, a refractive gradient is formed in the blue-phase liquid crystal layer, and thereby an incident light passing through the blue-phase liquid crystal layer focuses on the light-shielding region.

A lithium hydride activation method includes: a nitrification treatment process of reacting lithium hydride with a nitride and therefore forming a chemical compound layer stable to the nitride, on a surface of the lithium hydride; and a particle size reduction process of reducing a particle size of the lithium hydride provided with the chemical compound layer by a mechanical pulverization treatment after the nitrification treatment process is performed. A hydrogen generation method includes generating hydrogen by reacting ammonia with the lithium hydride activated by the activation method.

The invention provides a strategy combining metabolic engineering reconstruction with a fermentation process. On the one hand, a metabolic flow is changed to flow from a glycolysis route to an L-serine synthetic route by virtue of a metabolic engineering means, so that the sugar-acid conversion efficiency of L-serine is improved; and on the other hand, nutritional ingredients are added to meet requirements of corynebacterium glutamicum on nutrient substances after metabolic reconstruction, so that the problem of slow growth of thalli is solved, and the production strength of L-serine is improved.

The invention discloses an efficient composite carbon source for denitrification treatment of low-carbon-nitrogen-ratio wastewater and a preparation method thereof, and belongs to the field of water treatment. The preparation is prepared from, by weight, 10-25% of glucose, 3-5% of molasses, 1-5% of sodium citrate, 10-20% of glycerol, 3-5% of sodium formate, 3-8% of sodium acetate, 1-3% of inorganic phosphorus salt, 0.5-1% of microelements, 0.5-2% of growth factors and the balance water; the composite biological carbon source preparation disclosed by the invention can meet the nutrition required by microorganisms in different growth stages in a microbiota, realizes efficient denitrification of wastewater, and can improve the growth rate of the microbiota and the utilization rate of a carbonsource matrix by adding inorganic phosphorus salt, trace elements, growth factors and the like according to the quality of the wastewater, thereby further improving the biological denitrification efficiency.

The invention discloses a xylitol genetic engineering producing strain as well as a building method and application thereof, and belongs to the technical field of genetic engineering. The xylitol genetic engineering producing strain is obtained from escherichia coli W3110 through genome modification; ptsG, xylAB and ptsF in the original escherichia coli W3110 genome are replaced into xylose reductase gene XR; in addition, at least one of pfkA, pfkB, pgi and sthA in the genome is replaced into XR. The escherichia coli W3110 is used as an initial strain; the corresponding gene in the genome is replaced into the XR; xylose reductase is efficiently expressed; meanwhile, by blocking the xylose metabolism and the xylitol phosphorylation, the xylose utilization is improved; by blocking or reducing the EMP path glucose metabolism flux, the NADPH regeneration is enhanced; necessary coenzyme NADPH is provided for reducing xylose into xylitol by xylose reductase; the efficiency of the xylitol genetic engineering producing strain for converting the xylose to produce the xylitol is greatly improved.

The invention discloses a novel sludge brick making technique which comprises the following steps that municipal sludge is subjected to dewatering conditioning and desodoration treatment; heavy metal is controlled; treated sludge pug, clay and an additive are blended to form a material; the material is fed into a brute force extrusion mixer to be mixed fully, and is ground and homogenized by brute force roll grinding and aged; the aged brick making pug is fed into an adobe making workshop to be subjected to compression moulding for adobe making; the moulded adobes are fed into a drying room to be dried; and the dried adobes are placed in a back stage of a tunnel kiln to be sintered. According to the technique, the sludge from a sewage plant is mixed with the raw clay directly, so that energy resources consumed due to sludge drying are saved; targeted improvement measures are put forwards to solve the problems of sludge dewatering, odor control, heavy metal stabilization, etc.; the quality performance and the strength grade of sludge bricks are improved by methods of optimizing a sludge blending ratio and feeding the additive, etc.; the reduction, harmlessness, reclamation and industrialization treatment goals on the municipal sludge are realized; and the sludge bricks, serving as a product, have objective economic benefits.

The invention relates to a fish-skin collagen peptide compound product capable of enhancing the immunity and a preparation method of the fish-skin collagen peptide compound product. The fish-skin collagen peptide compound product consists of the following ingredients by weight percent: 40 to 70 percent of deep sea fish-skin collagen peptide, 2 to 12 percent of a ginseng extract, 2 to 12 percent of cordyceps militaris and 15 to 40 percent of a filler. The fish-skin collagen peptide compound product has the advantages that the ocean polypeptide is combined with traditional Chinese herb extract polysaccharide, all the components supplement, the effect for enhancing the immunity is good, the product solubility and stability are good, the taste is good, and the convenience in taking is realized.

The invention relates to a technique for high-efficient production of L-tryptophan by a microbiological fermentation method. The technique comprises the following steps: (1) culturing a mature Escherichia coli JLTrp strain; (2) culturing a fermentation tank: inoculating the mature strain to the fermentation tank; keeping the temperature to be 34 to 36 DEG C; carrying out supplementary liquid ammonia subsection control on pH, wherein pH is 7.0 to 7.2 in 0 to 18 hours, and 6.4 to 6.8 in 18 hours to the time of tank discharging; carrying out dissolved oxygen subsection control, wherein the dissolved oxygen is 10 to 25% in 0 to 18 hours, and 15 to 40% in 18 hours to the time of discharging the tank, the pressure is 0.03 to 0.08 MPa, and the air volume is 0.3 VVM to 2.0 VVM; controlling residual sugar to be 0.01 to 0.5% in the process, and then culturing to prepare the L-tryptophan. The method for the high-efficient production of the L-tryptophan by the microbiological fermentation method disclosed by the invention aims at good culture medium components and culture conditions, and the concentration control of the residual sugar, temperature control, and pH and dissolved oxygen subsection control are performed in a fermentation process, so that the fermentation period is shortened, the fermentation yield is improved, the process is simple and easy to control, and the cost is relatively low, furthermore, the method for the high-efficient production of the L-tryptophan by the microbiological fermentation method is suitable for large-scale industrial application.

The invention relates to an image recording device and a video recording method for double-face spline printing of a belt type printing machine, and belongs to the technical field of double-sided printing. At present, the printed surface and the to-be-printed surface of the cloth are printed with the same pattern, so that the use rate of the cloth can be improved, and the attractiveness of the product can be influenced due to dislocation; the image recording device comprises a printing guide belt and a cloth pressing roller, wherein a cloth guide roller, an image recording mechanism and a support are arranged above the cloth pressing roller, the printing guide belt is matched with the cloth pressing roller, the support is arranged at the rear side of the cloth pressing roller and the clothguide roller, the support is arranged on a rack of the guide belt type printing machine through connecting pieces located at the two ends of the support, and at least one image shooting mechanism isinstalled on the support according to the size of the shooting range of the image shooting mechanism and the width of the printing guide belt; the cloth pressing roller is pressed on the to-be-printedsurface of a printing fabric, and the cloth guide roller supports the printing surface of the printing fabric. The position of shape, size and distribution of the printing surface of the printing fabric and to be printed surface of the printing fabric can be coincided or basically coincided.

The invention relates to the technical field of wine brewing, and discloses a preparation process of sika deer blood wine. The preparation process of the sika deer blood wine comprises the following steps of: S1, material preparation; S2, screening and crushing; S3, stirring and soaking; S4, distillation and extraction; S5, comprehensive treatment; and S6, blending. Radix ginseng, folium cortex eucommiae, radix codcnopsitis pilosulas and radix angelicae sinensis are added, so that the healthcare effect of the deer blood wine is effectively improved; fructus lycii, fructus jujubae, longan, rhizoma dioscoreae, poria cocos and semen ziziphi spinosae are added, so that the taste of the deer blood wine is effectively improved, and the deer blood wine is more suitable for drinking; fructus alpiniae oxyphyllae, fructus corni, fructus amomi, flos caryophyllata and semen euryales are added, so that the problem that excessive drinking of the deer blood wine easily causes internal heat is effectively improved; the deer blood wine has more obvious effects of resisting fatigue, nourishing yin and tonifying yang; ultrasonic equipment is used for accelerating aging, so that fermentation of the deer blood wine can be accelerated, the preparation period can be shortened, and the preparation efficiency can be improved; and blending in different proportions can be performed, so that the healthcare effect is clearer.

The invention discloses a method for strengthening caproic acid fermentation by exogenously adding an inorganic carbon source, and belongs to the field of waste recycling. The method comprises the following steps: adding calcium carbonate into a fermentation mixed solution as an inorganic carbon source; wherein the adding amount of the calcium carbonate is 5-25 g / L relative to the mass volume concentration of the fermentation mixed solution. According to the method, calcium carbonate powder is externally added into a fermentation system at the initial stage of fermentation, so that an inorganic carbon source in the fermentation system can be continuously maintained, the relative abundance of a main microorganism clostridium kluyveri for producing caproic acid bacteria is improved, and theproduction of caproic acid is enhanced.

The anaerobic sequencing batch active sludge process belongs to the field of environment protecting and waste water treating technology. The present invention features the two-stage serially contained anaerobic sequencing batch reactor (ASBR) for optimizing methane bacteria colony, the separate adsorption in the reactor A and biodegradation in the reactor B, and the application of the technological process for treating medium and high concentration insoluble organic waste water. Compared with traditional ASBR, the present invention has 10-30 % raised organic load, 10-20 % reduced power consumption and 10 % raised organic matter eliminating rate.

The invention discloses a cooling device for seamless steel tube processing and a using method thereof. The cooling device comprises supporting legs, a supporting plate, a cooling box, a moving mechanism, a cooling mechanism, a feeding hopper, an L-shaped plate, a filtering mechanism and a discharging hopper. The supporting plate is welded to the tops of the four supporting legs, the cooling box is arranged at the top of the supporting plate, and the moving mechanism is installed in the cooling box. The cooling mechanism is arranged on one side of the top of the cooling box. The feeding hopperis installed on the side, away from the cooling mechanism, of the cooling box, and the discharging hopper is installed on the side, close to the cooling mechanism, of the cooling box. The L-shaped plate is connected to the back side of the supporting plate, and the filtering mechanism is arranged on the top of the L-shaped plate. After the structure is adopted, a seamless steel pipe is driven torotate, the seamless steel pipe can be cooled more sufficiently, the whole cooling process is conducted in a cooling cavity, and harm to operators is avoided; and meanwhile, cooling liquid is cooled and recycled through the filtering mechanism, and resources are saved.

The invention discloses a detoxification method for a wood fiber raw material pre-hydrolysis sugar liquid. According to the detoxification method, a pre-hydrolysis concentrated sugar liquid obtained after dilute sulphuric acid steam explosion pretreatment is taken as a raw material and an ionic liquid is taken as an extraction agent for removing of fermentation inhibitors in the wood fiber raw material pre-hydrolysis concentrated sugar liquid, wherein the ionic liquid is a disubstituted imidazole cationic liquid. The detoxification method has the advantages that the organic ionic liquid is adopted for extraction treatment on a wood fiber raw material pre-hydrolysis concentrated sugar liquid, and the treatment result shows that on the premise that a little fermented sugar is lost, the removing rates of formic acid, acetic acid, levulinic acid, furfuraldehyde, hydroxymethyl furfural and total phenolics in the prehydrolysis concentrated sugar liquid reach 64.54%, 54.88%, 100%, 100%, 87.08% and 70.44% respectively; in the same period, the sugar utilization rate is improved by 74.34%, the ethanol yield is improved by 82.91%, and the fermentation circle is shortened.

The invention provides a strategy combining metabolic engineering reconstruction with a fermentation process. On the one hand, a metabolic flow is changed to flow from a glycolysis route to an L-serine synthetic route by virtue of a metabolic engineering means, so that the sugar-acid conversion efficiency of L-serine is improved; and on the other hand, nutritional ingredients are added to meet requirements of corynebacterium glutamicum on nutrient substances after metabolic reconstruction, so that the problem of slow growth of thalli is solved, and the production strength of L-serine is improved.

The invention discloses a deep fertilization device for agricultural planting, and relates to the technical field of agriculture. The deep fertilization device for agricultural planting comprises a placing plate, the placing plate is in a rectangular plate shape, and a soil turning device is arranged on the placing plate. During use, the fertilization device is used for agricultural planting, when the placing plate moves on the ground through an external driving device, the right side of a soil turning block is inclined downwards, and at the moment, a soil turning block below the placing plate is inserted into the ground during movement. At the moment, the soil turning block is in contact with underground soil while moving, part of the soil is conveyed to the rear side along with a feeding hole and discharging holes in the front side and the rear side of the soil turning block, and the soil turning block and the feeding hole and the discharging holes in the two sides of the soil turning block can accelerate turning of the ground soil at the moment; therefore, the effects that the fertilizer can directly act on the underground interior and is fully mixed with seeds in the underground interior, and the utilization and absorption rate of crops to the fertilizer is increased are achieved.

The invention discloses a preparation process of sika deer penis wine, and relates to the field of making of medicinal wine. A preparation process of the sika deer penis wine comprises the following steps of S1, pretreating raw materials; S2, screening and crushing the pretreated raw materials; S3, performing primary soaking; S4, performing secondary soaking; S5, performing distilling and purifying; S6, performing comprehensive treatment; and S7, performing blending. According to the scheme, the utilization and absorption rate of effective components is increased, the raw materials are filtered and then purified in the liquid distillation and purification process, the drinking experience feeling of the sika deer penis wine is improved, the processing difficulty is reduced, the processing work efficiency is improved, and through combined soaking of multiple medicinal materials, the sika deer penis wine contains medicinal components for tonifying the kidney and strengthening essence, andhas the efficacy of nourishing the kidney and strengthening the essence. Moreover, the sika deer penis wine is beneficial to absorption by a human body, and has a good health-care efficacy on the human body, the manufacturing period is shortened, the manufacturing efficiency is improved, and the sika deer penis wine is convenient to sell, and can be blended in different proportions according to the required health-care efficacy, so that the health-care effect is clearer.

The invention discloses a preparation method of microorganism ferment calcium effervescent tablets, and belongs to the field of health-care foods. Goat bones are used as a raw material, and alkali protease and composite flavoured proteases are added for second-class enzymolysis to obtain enzymolysis collagen polypeptide liquid which is rich in amino acids; eggshells are used as raw materials for assisting in calcium ion chelating, so that the utilization rate of glutamic acid is increased, the calcium chelating rate is increased, and the dissolving state of calcium in small intestines can be maintained; casein is used as the raw material for fixing trypsin, so that casein phosphopeptides substances are prepared, and the casein phosphopeptides substances and the calcium can form a soluble complex in the small intestines belonging to weak alkali environment; and therefore, the condition that insoluble calcium phosphate precipitates in the small intestine environment being neutral and slightly alkaline, can be effectively avoided. Saccharomyces cerevisia and lactobacillus case are used for fermenting blueberry fruits, fresh oranges and celery, so that mixed fruit and vegetable fermentis prepared, and dissolving out of rich proteases, anthocyan and polyphenol nutrient components is promoted. The microorganism ferment calcium effervescent tablets have the efficacy of improving theoxidation resistance and the immunity of organisms and reducing cholesterol, and besides, are decomposed into micromolecule substances through fermentation, so that absorption by human bodies is facilitated.

The invention discloses a genetic engineering strain, a construction method and application thereof in xylitol production. The genetic engineering strain includes Escherichia coli and an expression vector transferred into the Escherichia coli. An XR gene is inserted to the downstream of the expression vector's promoter, the base sequence of the XR gene is shown as SEQ ID No.4, the promoter is Trc promoter, the 5' end of the XR gene has RBS from pET30a, and at least one of ptsG, xylA, xylB and ptsF genes in the Escherichia coli is inhibited or knocked out. Through translation initiation rate screening on xylose reductase gene and selection of appropriate RBS and promoter, the XR gene in the genetic engineering strain can obtain high efficiency expression at 30DEG C, and no inclusion body is generated. By knockout of the ptsG gene, the glucose effect is eliminated, and through knockout of the xylA, xylB and ptsF genes, xylose metabolism and xylitol phosphorylation are blocked.

The invention discloses a method for producing medium-chain alcohol by exogenous medium enhanced microorganisms. The method comprises the following steps of pretreating an exogenous medium, and performing grinding to obtain exogenous medium particles; pretreating anaerobic microorganisms and performing inoculating into a culture medium; inflating synthesis gas into the culture medium, and culturing and domesticating the microorganisms; inoculating anaerobic medium-chain alcohol production microorganisms, and performing mixing with the exogenous medium particles to obtain a fermentation systemfor producing medium-chain alcohol; and inflating synthesis gas into the culture medium containing a fermentation system, and performing reacting under anaerobic conditions to produce the medium-chainalcohol. The method also comprises two schemes of producing the medium-chain alcohol in a single-phase reactor and a two-phase reactor; According to the method, the fermentation system formed by anaerobic medium-chain alcohol production microorganisms and an exogenous medium can accelerate the absorption and conversion process of the microorganisms on the synthesis gas, and the medium-chain alcohol is produced. The exogenous medium in the fermentation system is not liable to inactivate in the reaction system, anaerobic microorganism death is not liable to cause, and the system can stably operate for 2-36 months.

A device and a method for controlling a high side DC / DC converter (HDC) of a hybrid vehicle are provided. The switching frequency of the HDC is variably adjusted based on situations of temperatures of an inductor and an IGBT switching element, which constitute the HDC, to maintain a balance between the temperatures of the inductor and the IGBT switching element. Accordingly, temperatures of the inductor and the IGBT switching element are detected, and the switching frequency of the HDC is variably adjusted based on a situation for each temperature of each element to maintain a balance between the temperatures of the inductor and the IGBT switching element, thereby improving the utilization rate of the IGBT switching element.

A method for improving the utilization rate of a vehicle-to-X communication device for vehicle-to-X communication, having the steps: receipt of digital certificates by the vehicle-to-X communication device, generation of cryptographic keys for signing vehicle-to-X messages to be emitted using the digital certificates by an electronic computing apparatus, temporal spacing of the receipt of the digital certificates by the vehicle-to-X communication device, and generation of the cryptographic keys using the digital certificates. Furthermore, a vehicle-to-X communication device and use of the device in a vehicle or an infrastructure apparatus is provided.

The invention discloses a method for directionally producing succinic acid by CO2 biotransformation. The method comprises the following steps of: preparing a culture medium suitable for the growth of pure strains for producing succinic acid, inoculating the pure strains for producing succinic acid for culturing, and obtaining pure bacteria for producing succinic acid in an exponential growth period; treating a precursor of an active metal catalyst, and grinding to obtain solid catalyst particles; adding a substrate, an acid neutralizer and the solid catalyst particles into a biological fermentation culture medium to obtain a mixed biological fermentation culture medium; inoculating the pure bacteria for producing succinic acid into the mixed biological fermentation culture medium, and uniformly mixing under an anaerobic condition to obtain a biological fermentation system for producing succinic acid by CO2 transformation; and introducing sufficient CO2 into a reactor, and producing succinic acid under an anaerobic condition. According to the method disclosed by the invention, the substrate, the acid neutralizer and the catalyst are coupled with pure bacteria fermentation to form an optimized biological fermentation system, and the optimized system can accelerate the fixation and utilization of CO2 and can stably and directionally produce high-concentration succinic acid.

The invention discloses a siderite modified sulphur lightweight material and a preparation method and application thereof, and belongs to the field of environment function materials and sewage treatment technology. The preparation method comprises the following steps: mixing siderite and sulphur and then heating for fusing, foaming the siderite and sulphur fusion mixture by a physical foaming or chemical foaming mode, and cooling for forming to obtain the siderite modified sulphur lightweight material. The prepared siderite modified sulphur lightweight material has characteristics of high specific surface area, light weight, high reactivity, easy microbial attachment, slow-release electron donor nitrogen-removal and iron ion phosphorus-removal and the like, can be used as a filling material for sewage treatment fluidized beds and fixed bed reactors, and deeply remove pollutants such as nitrogen, phosphorus, etc. in sewage through the microbial effect.

The invention discloses a cooling device for processing seamless steel pipes and a method for using the same. A supporting plate is welded on the top of the supporting leg, a cooling box is arranged on the top of the supporting plate, a moving mechanism is installed inside the cooling box, a cooling mechanism is arranged on one side of the top of the cooling box, and the cooling box is far away from the side of the cooling mechanism. A feed hopper is installed on one side, a discharge hopper is installed on the side of the cooling box close to the cooling mechanism, an L-shaped plate is connected to the back of the support plate, and a filtering mechanism is arranged on the top of the L-shaped plate; after adopting the above structure , by driving the seamless steel pipe to rotate, the seamless steel pipe can be cooled more fully. The entire cooling process is located in the cooling chamber to avoid injury to the operator. At the same time, the cooling liquid is cooled and recycled through the filter mechanism to save resources.