117results about How to "Reduced conversion efficiency" patented technology

A photonic structure for “white” light generation by phosphors under the excitation of a LED. The photonic structure mounts the LED and an optically transparent nanocomposite matrix having dispersed therein phosphors which will emit light under the excitation of the radiation of the LED. The phosphors dispersed in the matrix may be nanocrystalline, or larger sized with the addition of non light emitting, non light scattering nanoparticles dispersed within the matrix material so as to match the index of refraction of the matrix material to that of the phosphors. The nanocomposite matrix material may be readily formed by molding and formed into a variety of shapes including lenses for focusing the emitted light. A large number of the photonic structures may be arranged on a substrate to provide even illumination or other purposes.

Cladding-pumped Raman fiber lasers and amplifiers provide high-efficiency conversion efficiency at high brightness enhancement. Differential loss is applied to both single-pass configurations appropriate for pulsed amplification and laser oscillator configurations applied to high average power cw source generation.

The invention discloses a solar cell having a double-sided micro / nano composite structure and a preparation method thereof. The solar cell comprises a first micro / nano composite structure which is positioned on the front of the solar cell and a second micro / nano composite structure which is positioned on the back of the solar cell; the first micro / nano composite structure comprises a doped diffusion layer which is manufactured on the surface of a silicon-based substrate, a front micro-scale light absorption layer corroded on the doped diffusion layer, and a front nano-scale black silicon antireflection layer etched on the front micro-scale light absorption layer; the second micro / nano composite structure comprises a back micro-scale light absorption layer corroded on the lower surface of the silicon-based substrate, and a back nano-scale black silicon antireflection layer etched on the back micro-scale light absorption layer. The problems that a black silicon material layer replaces the micro-scale light absorption layer, and the absorption range of the solar spectrum is widened but the conversion efficiency is low in the traditional black silicon solar cell structure are solved.

The invention relates to a plasm-aided selenium sulfuration treatment device arranged in a vacuum chamber. The plasm-aided selenium sulfuration treatment device comprises a shell, a cathode plate and an anode plate, wherein the cathode plate and the anode plate are alternately stacked to form a plasm generator, the cathode plate is provided with a groove for fixing a semiconductor film substrate, and small holes are uniformly distributed on the surface of the anode plate which is provided with a gas pipe, an independent internal heating electrode and an anode temperature-measuring point. The process based on the treatment device comprises the following steps of: (1) precasting a metal layer on the semiconductor film material according to the proportions of a chemical formula and then putting in the groove of the cathode plate; and (2) putting in the vacuum chamber to vacuumize, switching on a power supply to heat the cathode plate and the anode plate, switching on a power supply of the plasm generator and adding the mixed gases of selenium or sulfur, hydrogen and argon. The invention has the advantages that selenium ions have high reaction activity, the selenizing reaction of the metal precast layer is complete, the photoelectric conversion efficiency is high, and the substrate has lower heating temperature and is hardly deformed. An electronic mode is adopted to monitor the change of capacitive reactance between the two electrodes, know the conversion development and reduce the defective index of the industrial production.

A chalcopyrite solar cell having a mica substrate or a laminated mica substrate, an intermediate layer made of a ceramic-based material formed on the mica substrate, and a binder layer formed on the intermediate layer. The intermediate layer has a thickness equal to or more than 2 μm and equal to or less than 20 μm. The binder layer has a thickness equal to or more than 3000 Å and equal to or less than 8000 Å. The intermediate layer and the binder layer are interposed between the mica substrate and a molybdenum electrode.

The invention relates to a method for matter and phase divided resource recovery of sludge. The invention creatively proposes a method of "two-stage high solid-content thermal hydrolysis+synchronous solid-liquid separation+efficient methane production by liquid / solid dry anaerobic fermentation+land utilization". Compared with the prior art, the method provided by the invention can effectively realize degradable organic matter and hardly degradable organic matter divided and solid-liquid phase divided high efficiency treatment in sludge, organic matter-rich thermal hydrolysate is subjected to anaerobic digestion by a two-stage UASB high-efficiency anaerobic reactor, the residence time is greatly shortened, the volume of a digestion tank is obviously reduced, and the conversion efficiency oforganic matter anaerobic digestion is significantly improved. At the same time, thermal-hydrolyzed sludge high dryness dehydration can be realized without adding chemicals under a high temperature condition, the filter cake dehydration performance and quality are both significantly improved, the energy consumption and material consumption level of the sludge treatment and disposal process can besignificantly reduced, finally, the dehydrated sludge cake makes use of the afterheat of itself for dry anaerobic fermentation to recover biogas energy and realize sludge cake stabilization, and the discharged material is applied to land utilization.

The invention provides a red phosphorus pre-treatment method for preparing black phosphorus. The red phosphorus pre-treatment method comprises the following steps: putting red phosphorus into a heating furnace; heating to 150 DEG C to 300 DEG C under a protective atmosphere or vacuum condition, and keeping for 1h to 4h; then naturally cooling to room temperature; carrying out manual grinding or ball milling on the red phosphorus subjected to the heating treatment to obtain pre-treated red phosphorus powder. The red phosphorus pre-treatment method provided by the invention has a simple process, and the treated red phosphorus powder has high purity and uniform granularity and shape; when the red phosphorus powder is used as a raw material for synthesizing the black phosphorus, the purity and conversion efficiency of the black phosphorus can be effectively improved, and high-quality and high-crystallization-degree black phosphorus single crystals or poly-crystals are obtained.

The invention discloses a rapid preparation method of a dicotyledonous plant transgenic acceptor, which comprises the following steps: 1) surface sterilization of dicotyledonous plant seeds; 2) imbibition of the dicotyledonous plant seeds, that is, putting the sterilized dicotyledonous plant seeds into a sterilized differentiation tank, adding sterile water, soaking the sterilized dicotyledonous plant seeds in the dark at 18-22 DEG C for 12-15 hours to obtain the imbibed dicotyledonous plant seeds; 3) acceptor preparation, that is, putting the imbibed dicotyledonous plant seeds on sterile absorbent paper, cutting the seeds vertically along the hila to divide the cotyledon into two petals, removing seed coats to obtain the dicotyledonous plant transgenic acceptors. With the invention, the transgenic program is simple and practical, has stable efficiency, and has great significance for the improvement of dicotyledonous plant transgene efficiency.

The invention belongs to the field of preparation of inorganic nano composite materials and environment governance, and particularly discloses a preparation method of binary 2D / 2D CdIn2S4 / BiOCl nano composite photocatalyst with visible light activity. The preparation method adopts BiOCl nanosheets as a precursor and uses cadmium nitrate tetrahydrate, indium nitrate hydrate and thioacetamide as rawmaterials to prepare the BiOCl nanosheet-loaded CdIn2S4 nanosheet composite photocatalyst of different ratios by adopting a single one-step hydrothermal method. The 2D / 2D CdIn2S4 / BiOCl nano compositephotocatalyst with a unique structure can be used for degrading the dye methyl orange under the visible light, and has the advantages that the preparation raw material is environment-friendly, the method is simple, the hybridization reaction condition is mild, the period is short, the cost is low and the like. The CdIn2S4 / BiOCl nano photocatalyst is a novel composite visible photocatalyst; and due to the unique surface-surface heterogeneous structure, the photocatalytic degradation activity is excellent, and the application prospect in the aspect of treating the dye waste water is important.

The invention provides a cold region straw decomposition microbial inoculum as well as a preparation method and application thereof, and belongs to the technical field of agricultural preparations. The cold region straw decomposition microbial inoculum comprises a low-temperature flora and a normal-temperature flora, wherein the low-temperature flora comprises 20%-28% of lactobacillus plantarum, 17%-25% of lactococcus lactis subsp. Lactis, 14%-22% of lactococcus, 11%-22% of arthrobacter globiformis and 9%-18% of rhodococcus, wherein the normal-temperature flora is lignocellulose decompositionflora. The product provided by the invention can start fermentation under a low-temperature condition, promote decomposition of straws under the low-temperature condition, improve the in-situ decomposition efficiency of straws in cultivated land, and solve the problems of seedling death and yield reduction caused by severe decomposition of straws in paddy fields in cold regions in summer in China.

The invention provides an efficient breeding method for meat rabbits. According to the physiological features of the meat rabbits in different stages, the meat rabbits at the growing period are divided into weaning baby rabbits (I), young rabbits (II) and fattening rabbits (III), and feed which is composed of basic daily rations and nutrition additives is provided in all the stages. By means of the efficient breeding technical method for the meat rabbits, different feed daily rations are prepared in accordance with the different physiological features of the meat rabbits, the specific nutrition additives are added in all the stages, hence, the absorption and utilization rate of the feed is increased, the rate of survival is also increased, and economic benefits are improved.

The invention discloses a power-saving type USB charging structure. The power-saving type USB charging structure comprises a power supply, a first current conversion module and a second current conversion module; the first current conversion module is used for converting the power supply current into low current for supplying power; the second current conversion module is used for converting the power supply current into high current for supplying power; the power-saving type USB charging structure also comprises a USB charging interface, a trigger circuit and a charging switch circuit; and the charging switch circuit comprises a first current output node, a second current output node, a USB current output node, a gating module, a first on-off module and a second on-off module. According to the power-saving type USB charging structure, a portable external device can be powered by switching the second current conversion module in a shutdown state, so that the problems that the current obtained by switching the first current conversion module is low and the low current cannot meet the demands of supplying power and charging at the same time is solved; and in addition, the problem of overhigh power consumption caused in charging external devices by the system in the shutdown state is solved as well.

The invention relates to a preparation method of a perovskite micro laser, as that method utilize the advantages of high carry migration rate, long diffusion length. The rod or sheet perovskite material with high absorption coefficient and high quantum yield is used as the gain medium of the laser. The perovskite material is pumped by the semiconductor laser array as the excitation light source. The excitation light source makes the perovskite material produce stable spontaneous emission amplification (ASE), and finally the laser output of the target wavelength is realized. The method utilizesthe advantage that the perovskite material can convert 70% of the absorbed light into the emitted light, a low threshold, high conversion efficiency and work wavelength tuning range can cover near infrared to visible light laser devices, and that problems of low conversion efficiency of solid-state laser, serious temperature gain ratio and difficulty in realizing different wave bands laser devices in the prior art are solved.

The invention discloses a rapid and high-efficiency transgenic method for indica rice. The method comprises the following steps of: exposing indica rice mature seeds to Agrobacterium tumefaciens 5 to 15 days after callus induction, co-culturing, performing resistant callus screening for 10 to 20 days, performing differentiation culture for 10 to 20 days, performing rooting culture for 5 to 10 days, and performing resistance screening again. The transgenic plants of indica rice can be produced within 40 to 50 days, and the conversion efficiency reaches 20-30%. In the conversion process, the culture conditions are as follows: the temperature ranges from 30 DEG C to 33 DEG C and the light is continuously supplied with the intensity of 80 to 120 mu mole / m<-2>s<-1>, except that the co-culture stage is carried out at 25 DEG C in the dark. The method provided by the invention greatly shortens the in vitro culture time of calli, increases the differentiation efficiency, reduces the mutation frequency of somatic cells, simplifies the operation procedure and saves a large amount of labor and material resources.

The invention discloses a fuel cell hybrid electric vehicle heat management system and method, a vehicle and a medium. The system comprises a galvanic pile cooling and heating loop, the galvanic pile cooling and heating loop comprises a radiator, a thermostat, a galvanic pile water pump, a galvanic pile and a galvanic pile temperature sensor which are connected in sequence, and the thermostat can control whether cooling liquid in the loop passes through the radiator; a battery cooling and heating loop which comprises a battery, a battery water pump, a battery temperature sensor and a battery three-way valve which are connected in sequence; the heating loop comprises a hydrogen combustion heater, a warm air core body, a heating loop rear end temperature sensor, a heating three-way valve, a heating water pump, a heat exchanger and a heating loop front end temperature sensor which are connected in sequence; a refrigerating loop which comprises an air conditioner and a cooler which are connected with each other, and the cooler exchanges heat with the battery cooling and heating loop; the electric pile cooling and heating loop and the battery cooling and heating loop are both connected with the heating loop, and the refrigerating loop is connected with the battery cooling and heating loop. The electric pile and the battery can be warmed, and a driver can be warmed.

The invention discloses a recombination strain secreting glutathionem, wherein the recombination strain has an inactivated gene of a transportation protein transporting the glutathionem from outside the cell to inside the cell, and expresses a gene of a transportation protein transporting exogenous glutathione from inside the cell to outside the cell. The recombination strain provided by the invention changes transportation pathways of the glutathione, and enables the synthesized glutathione to be secreted to outside of the cells, thereby greatly improving glutathione output, with a concentration of the extracellular glutathione being two times of that of the intracellular glutathione. The recombination strain provided by the invention has a total GSH production of more than 10g / L, and the GSH transported to outside of the cells has a production of more than 7g / L.

The invention discloses a preparation method of competent cells with high transformation efficiency, relates to the technical field of microorganisms and solves the problems of inconvenience in operation, low transformation efficiency and low yield in the prior art. The preparation method comprises steps as follows: (1) strains are scribed on an LB panel and cultured overnight at the temperature of 37 DEG C; (2) an SOC culture medium is inoculated with the strains, and the strains are subjected to shake culture at the temperature of 18 DEG C under the condition of 250 rpm until the OD600 value ranges from 2.0 to 5.0; (3) a strain solution is centrifuged in a sterilized tube with the volume being 50 mL at the temperature of 4 DEG C under the condition of 2,500 g / 5 min, a supernatant is discarded, a buffer solution is added to settled strains, and manual resuspension is performed; (4) a product is centrifuged at the temperature of 4 DEG C under the condition of 2,500 g / 5 min, a supernatant is discarded, a proper quantity of buffer solutions and a proper amount of DMSO are added, the OD600 value is 5.0, and the final concentration of DMSO is 7%; (5) the product is subpackaged in a sterile EP tube, put in liquid nitrogen and frozen quickly, and the competent cells are obtained. The preparation method is simple to operate, the yield is high, and the transformation efficiency can be up to (1*10<8>)-(5*10<9>).

The invention discloses a shuttle plasmid carrier, and a construction method and application thereof. The shuttle plasmid carrier is formed by linearizing bacillus subtilis plasmid pWB980 and inserting into a carrier pMD19-T Simple Vector. The shuttle carrier plasmid can be copied in escherichia coli and paenibacillus polymyxa. In the paenibacillus polymyxa, the genetic operation system is not yetmature, the conversion steps are tedious and the conversion efficiency is relatively low; and in the escherichia coli, gene cloning operation is very convenient. The plasmid carrier can complete exogenous gene cloning and recombinant plasmid construction in the escherichia coli, related gene function research and genetic breeding work are developed in the paenibacillus polymyxa conveniently, andthe conversion rate can reach 7.83 + / -1.54*10<5>CFU / ug DNA.

The invention discloses a preparation method of a DOC (diesel oxidation catalyst) for the exhaust gas emission of a diesel engine. The preparation method comprises the following steps: (a) weighing modified aluminum oxide, modified cerium-zirconium oxide and deionized water, carrying out ball milling for a period of time, and testing the particle size of slurry D50 which is 3-5 microns; (b) slowlydropwise adding a noble metal salt solution into the slurry so as to maintain the pH value of the slurry to be 9-10; (c) carrying out carrier coating; and (d) calcining. According to the preparationmethod, a DOC coating layer has a relatively low ignitiontemperature and can be rapidly ignited even when the exhaust gas temperature is not high; very high conversion efficiencies of HC and CO can beachieved; the exhaust gas temperature can be greatly increased, and the oxidation performance and the DPF regeneration performance can be improved; and NO in exhaust gas can be effectively convertedinto NO2, so that the regeneration of dry soot in DPF is promoted.

The invention provides a cracking process for a byproduct chlorosilane high-boiling residue in polycrystalline silicon production. The cracking process comprises the following steps: filtering the byproduct chlorosilane high-boiling residue in polycrystalline silicon production to remove amorphous silicon in the byproduct chlorosilane high-boiling residue so as to obtain a purified high-boiling residue; and cracking hydrogen chloride and the purified high-boiling residue by using a catalyst to obtain a cracking product system, wherein the catalyst comprises macroporous resin and organic amineloaded on the macroporous resin, and the organic amine is selected from and any one or more of tri-n-butylamine, tri-n-octylamine, N,N-dimethylaniline, dioctadecyl secondary amine and perfluorotriethylamine. A framework of macroporous resin serving as a carrier in the catalyst is high in compatibility with the chlorosilane high-boiling residue, more reaction interfaces are provided, and organic amine loaded on the framework is enriched in micropores, so that the reaction of the inner surface and the outer surface of the resin is more thorough, the conversion rate can be increased, and the pyrolysis temperature can be reduced. The catalyst can be recycled. Before entering macroporous resin, amorphous silicon in the polysilicon production byproduct is removed through filtration, and resin pores are prevented from being blocked.

The invention discloses a tidal energy generating device. The tidal energy generating device comprises a mounting plate. Water shell shells are fixedly connected to two sides of the bottom of the mounting plate by first connecting rods. A bearing is fixedly connected to the center of the bottom of the mounting plate by a second connecting rod. Water openings are formed in the inner walls of two sides of the water shells. Fixing pieces are fixedly connected to the inner walls of the water openings located on the outer sides by four connecting ribs. Water wheels are movably connected to the sides, close to the bearing, of the fixing pieces by connecting shafts. First rotating shafts are fixedly connected to the sides, close to the bearing, of the water wheels. The ends, close to the bearing,of the first rotating shafts sequentially penetrate through the water wheel shells and the bearing, and extend into the bearing. The structure is simple. High requirements are not needed for the mounting positions. Energy transferring efficiency is reduced by gear transmission. The work amount is little. Excessive construction cost is not required. Application in condition with less power generating demand can be achieved.

The present invention provides a wavelength conversion device with a novel structure and an associated illumination device. The wavelength conversion device includes: a heat conductive substrate, a reflective film layer disposed on the heat conductive substrate, a light emitting layer disposed on the reflective film layer, and a bond located between the reflective film layer and the light emittinglayer. The bonding layer is composed of a binder doped with a first wavelength converting material, wherein the first wavelength converting material is capable of emitting red light having a wavelength in the range of 550-650 nm. The light emitting layer includes a yellow light emitting material having an emission wavelength shorter than an emission wavelength of the adhesive layer. The light-emitting effect of the monochromatic red light is further enhanced by the wavelength conversion device, and the reliability of the wavelength conversion device is also improved.

Provided is a dye-sensitized solar cell in which the energy conversion efficiency is increased by adsorbing two different kinds of dyes to the surface of titanium oxide that constitutes a semiconductor electrode. In a dye-sensitized solar cell including a conductive support, a porous semiconductor layer having sensitizing dyes adsorbed onto this conductive support, a carrier transport layer and a counter electrode, the energy conversion efficiency is increased by adsorbing a mixture of a ruthenium complex, and an organic dye having a different molecular size and exhibiting a high open circuit voltage as a photoelectric conversion characteristic obtainable by the dye alone, onto the porous semiconductor layer.

The invention disclose a manufacture method for Chinese caterpillar fungus zymogen powder that includes the following steps: making solid culture medium that made up from the solid materials of 82-88wt% rice, 8-12wt% bran, 3-4wt% soybean meal, and 1-2wt% ammonia sulfate, and adding 0.9-1.1 weight ratio water after crushing the solid material taking sterilization and cooling; fermenting under the condition of asepsis and inoculating onto the solid culture medium for 7-10 days in 20-22 degree centigrade, drying the white hypha in 40-50 degree centigrade and crushing, the product would be gained. The invention is low cost and has high yield.

The invention discloses a quick and efficient transgenic method for white birch, relates to a method for plant transgene, and aims at solving the problems that an existing method is low in stable transformation efficiency and long in transformation period of the white birch. The scheme provided by the invention is that the quick and efficient transgenic method comprises the following steps: selecting white birch tissue culture seedlings with the height of 5 to 6cm and carrying out induced culture on calluses; transferring the calluses into an agrobacterium tumefaciens infected solution containing a target gene sequence; carrying out vacuumized treatment and dark culture in sequence; screening resistant seedlings, and transferring the screened resistant seedlings into a rooting culture medium with a selective agent and a bacteriostatic agent added for culturing; finishing the operation after molecular detection is successfully verified. Compared with the prior art, the quick and efficient transgenic method has the advantages that the average transformation rate is improved by 2.71 times; in addition, the transformation period of infecting by using the calluses is shorted by one third or above compared with that of taking leaf blades and stems as explants. The quick and efficient transgenic method disclosed by the invention is applied to the field of transgenes.

The invention relates to a new streptomyces secretion expression plasmid and application thereof. The new streptomyces secretionexpression plasmid is particularly characterized by being cloned with a colon bacillus replication original region ori, a streptomyces conjugational-transfer essential region oriT, a penbritin resistance gene bla, an apramycin resistance gene aac (3) IV, a promoter ermE*p, a lidamycin prosthetic-group protein gene promoter cagAp, a lidamycin prosthetic-group protein gene mutation type signal peptide SPcagA (CTG) and multiple cloning sites by taking a minimum replicon of a pSGL1 plasmid naturally existing in streptomyces globisporus C-1027 as a framework. The new streptomyces secretory expression plasmid can be used for efficiently secreting and expressing various heterologous proteins in streptomyces.

The present invention applies for a full-price compound feed for beef cattle fattening. The full-price compound feed comprises a 187 granule material or powdered material, 188 granule material or powdered material and a 189 granule material or powdered material; the 187 granule material or powdered material, the 188 granule material or powdered material and the 189 granule material or powdered material all consist of corn, soybean meal, corn germ mash, sprayed corn husk, distiller's grains, corn husk, hay, wheat middling, barley husk, soybean husk, stone powder, glucose, glutamic acid residues, bentonite, sodium chloride and a cattle premix. Beneficial effects are as follows: the full-price compound feed for the beef cattle fattening is the mixed granule feed respectively aiming at calves, growing cattle and fattening cattle for feeding, and plays the functions of regulating the rumen development of the calves, improving the immunity and survival of the calves, improving the rumen development of the growing cattle, cultivating bones, increasing body size and laying a good foundation for fattening. Besides, the 189 granule material or powder material focuses on improving the rumennutrients of the feed, improves feed conversion efficiency and growth efficiency, shortens feeding cycles and reduces farming costs.

The invention relates to a dish type high-multiple concentrating photovoltaic generating device which comprises a plurality of gallium arsenide photovoltaic batteries, a gravity type heat pipe radiator, a dish type high-multiple concentrating lens, a photosensitive probe, a control cabinet and the like. The photosensitive probe is used for detecting the sun at any time, a programmable controller in the control cabinet is used for receiving the signals of the photosensitive probe, and then control signals are outputted to a horizontal rotating mechanism and a tilted rotating mechanism after being processed to drive a bracket and drive the dish type high-multiple concentrating lens to adjust a horizontal direction and a tilted angle at any time, thereby ensuring that the sun is accurately tracked. The dish type high-multiple concentrating photovoltaic generating device is suitable for different weathers, such as sunny days, cloudy days and the like, and has the characteristics of higherphotoelectric conversion efficiency, light weight, convenience of installation, long-term stability and running safety.

The present invention is a material that exhibits excellent properties as an n-type semiconductor, in particular for use in organic thin-film solar cells. The present invention relates to a fullerene derivative represented by formula (1):whereinR1a and R1b are the same or different, and each represents a hydrogen atom or a fluorine atom;R1c and R1d are the same or different, and each represents a hydrogen atom, a fluorine atom, alkyl, alkoxy, ester, or cyano;R2 represents (1) phenyl optionally substituted with at least one substituent selected from the group consisting of fluorine, alkyl, alkoxy, ester, and cyano, or (2) a 5-membered heteroaryl group optionally substituted with 1 to 3 methyl groups; andring A represents a fullerene ring.