76results about How to "Stable transformation" patented technology

The present invention relates to a high magnetic induction grain-oriented silicon steel stripe nitriding treatment method, which comprises the following steps smelting, continuously casting, billet heating, hot rolling, normalizing and cold rolling, decarburization annealing; one-time nitriding; homogenized treating; coating a magnesium oxide isolation agent; high temperature annealing; coating an insulating layer, stretching, flattening for next application. The homogenization treatment can ensure that the metastable nitrogen formed by nitriding is dispersed in the steel strip in time, and conversed to stable AlN simultaneously. So that enough stable AlN is formed in the steel strip before high temperature annealing, the stability of the inhibitor state can be ensured in a large high temperature annealing process range, and the stability of magnetic property can be ensured, thereby the bottom quality with excellent adhesion and no defect is obtained.

The invention discloses an agrobacterium-rhizogene-mediated stable transformation method of peach root systems and application of the method, and relates to the field of peach biotechnology and molecular breeding. The method comprises the steps of 1, culture of sterile seedlings; 2, preparation of a transformation receptor material explant; 3, preparation of an infecting bacterial liquid; 4, infection; 5, co-culture; 6, transgenic root induction culture; 7, transgenic root detection; 8, acquisition of compound peach plants. Through the application of the method, the transgenic root+wild bud compound peach plants containing important agronomic trait genes are obtained; research on resistance improvement of peach root-knot nematodes is carried out; research on drought and saline-alkali stress resistance of peach roots is carried out. By means of the method, the transgenic root+wild bud compound peach plants can be obtained, and therefore important technical support is provided for the further implementation of research on diseases and pests and resistance breeding of the peach root systems.

The invention discloses a hybrid material based on a macrocyclic compound photosensitive dye and titanium dioxide and a preparation method thereof, and application of the hybrid material to photocatalysis. The hybrid material comprises the macrocyclic compound photosensitive dye and titanium dioxide, wherein the macrocyclic compound photosensitive dye is a calixarene compound or porphyrin compound. The invention also discloses the preparation method for the hybrid material based on the macrocyclic compound photosensitive dye and titanium dioxide, and application of the hybrid material to photocatalysis. The organic-inorganic hybrid material prepared from the macrocyclic compound photosensitive dye and titanium dioxide has a hierarchical porous structure, and can improve the free diffusionof gas and surface adsorption of CO2, increase the adsorption quantity and activation degree of reactants, reduce the possibility of electron-hole recombination and effectively enhance photocatalysisefficiency. Moreover, the hybrid material of the invention has high stability and is improved in cyclic utilization stability in photocatalysis.

The invention discloses an isosorbide preparation method. The method comprises the following steps: 1) adding a phosphorus modified HZSM-5 molecular sieve into a sorbitol solution, and carrying out adehydration reaction to obtain a solid-liquid mixture; 2) filtering the solid-liquid mixture so as to obtain the filtrate; 3) performing actived carbon decoloration on the filtrate, and filtering again so as to obtain the filtrate; 4) performing ion exchange on the filtrate by virtue of D301 anion resins, 001*7 cation resins and D301 anion resins respectively so as to obtain ion exchange liquid; 5) concentrating the ion exchange liquid into Brix being 75-90%, and performing primary cooling crystallization; and centrifuging to obtain a crude isosorbide crystal; and 6) adding water into the crude isosorbide crystal, heating and dissolving to enable the Brix to be 70-85%, performing secondary cooling crystallization, centrifuging and drying, thereby obtaining the product isosorbide crystal. Compared with the prior art, the method disclosed by the invention has the advantages that the isosorbide produced by the method is high in yield, the number of by-products is few and the stability ishigh, so that the isosorbide preparation process is simplified, and the cost is reduced.

The invention discloses a tilting mechanism capable of being hidden in a wing. The tilting mechanism is arranged on the wing; a recovering space capable of accommodating the tilting mechanism is reserved in the wing; the tilting mechanism comprises a steering gear, a tilting seat, a motor and foldable paddles; the motor and the foldable paddles are fixed on the tilting seat; the steering gear and the tilting seat are connected through connecting rod mechanisms. The tilting mechanism can be used as a rotor tilting mechanism for an unmanned tilting rotor aircraft, and can stabilize the aircraft to achieve conversion between multiple rotors and a fixed wing, so that resistance to forward flight can be reduced, and the propulsion efficiency can be improved.

The invention belongs to the technical field of rolling steel, and discloses a method for eliminating a flat coil defect of a 590Mpa dual-phase steel hot coil. The method includes controlling the hotrolling finishing temperature according to the ferritiszation phase transition starting temperature of austenite to promote transformation of the austenite into ferrite; dividing a hot rolling coolingsection into a fast cooling section and a slow cooling section and cooling a hot rolled plate to the cold intermediate temperature in the fast cooling section to promote transformation of the austenite to the ferrite and promote transformation of the austenite to pearlite in the slow cooling section. According to the method, high proportion transformation of the austenite to the ferrite and the perarlite with higher stability in the rolling process is achieved by finishing temperature control and subsection cooling and cooling target temperature control, the ratio of the residual austenite isreduced, so that phase change expansion caused by transformation of the austenite to bainite in the hot coil cooling process and the corresponding flat coil defect are greatly reduced.

This disclosure relates to the field of plant molecular biology and concerns methods for enhancing the abiotic stress tolerance in plants by modulating the expression of a gene involved in the gibberellin biosynthesis during the period of abiotic stress. This disclosure also provides chimeric constructs useful in the methods disclosed herein. In addition, transgenic plants having an enhanced abiotic stress resistance are provided herein.

The invention discloses a composite condensation / evaporation four-function hot water heat pump air-conditioning installation. Heat recovery device (1) is connected in series between outlet of compressor (2) and four-way valve (3); one end of bypass control pipe (9) is directly connected to the outlet of the compressor (2), and another end is connected to inlet of pneumatic control pipe of the four-way valve (3) or high pressure side inlet thereof; one end of condenser (11) is connected to the four-way valve (3); one end of condenser (11) is connected to the outlet of the four-way valve (3) via first control solenoid valve (17), and another end of the condenser is connected to the four-way valve (3) via second control solenoid valve (19); air-cooling evaporator (13) and water-cooling evaporator (21) are parallel connected and are respectively connected with third solenoid valve (18) and fourth solenoid valve (20). The invention can realize good cooling and heating effects as well as recovery of condensation heat, and has advantages of stable performance, easy production, and low cost, easy operation.

The invention discloses a high-selectivity CO2 reduction photocatalyst, a preparation method and application. The preparation method comprises the steps of preparing an ultrathin mesoporous ZnO nanosheet on a substrate material through a high-temperature calcination-hydrothermal method, then adopting an in-situ photodeposition method for reducing and depositing silver nitrate or palladium chlorideon the ultrathin mesoporous ZnO nanosheet, and preparing to obtain the photocatalyst. The photocatalyst can be used for high-efficiently reducing carbon dioxide; after illumination for 4 hours, the yield of methane and CO reaches up to 90 percent or more; and the high-selectivity CO2 reduction photocatalyst has higher selectivity and activity stability.

The invention relates to sunscreen powder and a preparation method thereof. The sunscreen powder sequentially comprises a substrate, an ultraviolet shielding layer and an optional inorganic light stabilizing layer from the inside to the outside. The substrate is in the form of a sheet, the particle size is less than or equal to 10 mum, and the radius-thickness ratio is more than or equal to 30. The ultraviolet shielding layer includes a titanium dioxide layer and a zinc oxide layer, and the rutile structure of the titanium oxide is not less than 60%. The sunscreen powder has the advantages ofgood dispersibility, good sunscreen effect and good stability.

The invention discloses a combined catalyst and a method for treating nitrogen-containing volatile organic compound pollutants, and belongs to the technical field of catalytic combustion environment protection. The Cu and Ag system catalysts of the combined catalyst preferentially selectively oxidize nitrogen-containing components of composite pollutants into nitrogen with stable chemical properties, and then the Pt and Pd noble metal system catalysts completely mineralize residual organic components. The combined catalyst and the method disclosed by the invention are slightly limited by types, concentrations and gas airspeed of pollutants, and are universally suitable for catalytic combustion treatment of nitrogen-containing volatile organic compound pollutants. The catalyst has important significance on organic waste gas purification in industries with typical nitrogen-containing compound pollutant emission characteristics, such as petrochemical industry, coating industry and synthetic leather industry, can stably convert nitrogen-containing volatile organic compound pollutants in waste gas into carbon dioxide, water and nitrogen for a long time, hardly generates nitrogen oxide, and is good in stability.

The present invention provides a method and compositions for high throughput screening of genetically modified photosynthetic organisms for plasmic state. The present invention provides methods of producing one or more proteins, including biomass degrading enzymes in a plant. Also provided are the methods of producing biomass degradation pathways in alga cells, particularly in the chloroplast. Single enzymes or multiple enzymes may be produced by the methods disclosed. The methods disclosed herein allow for the production of biofuel, including ethanol.

The invention provides a method of preparing a low-calcium polymeric aluminum chloride water purifier from aluminum ash, hydrochloric acid, and optical red mud. The preparation method comprises following steps: burning aluminum ash, calcium carbonate, and / or calcium oxide in an oxidative atmosphere; burning the obtained material, reacting the burned material with hydrochloric acid and optical redmud to prepare slurry containing polymeric aluminum chloride, adding sodium sulfate to carry out reactions; filtering the slurry, wherein the filtrate is the water purifier, washing the filter residues by water, and utilizing the obtained solid slag or stacking / burying the solid slag. A problem that when aluminum is hydrolyzed or acid-hydrolyzed, hydrogen is generated and the hydrogen is combustible and explosive is solved. A problem that when aluminum nitride is hydrolyzed, ammonia is generated and the water purified by the water purifier is polluted by ammonia nitrogen is solved. The low activity alumina, which comprises alpha-alumina, can be activated. The fluorine containing aluminum ash is stabilized and detoxicated. Moreover, a low-calcium polymeric aluminum chloride water purifierand a low-calcium polymeric ferric aluminum chloride water purifier are prepared, and the hardness of the processed water is barely increased, during the application process of the water purifier. Thetechnology is simple, the investment and operation cost is low, and the obtained solid slag is common solid wastes.

Presented is an improvement to a previous invention involving the catalytic hydrogenation of the C2 to C5 and heavier acetylenes and dienes in a thermally cracked feed stream without significantly hydrogenating the C2 and C3 olefins. The improvement involves the use of a fixed bed hydrogenation reactor system in combination with a modified version of the catalytic distillation unit used in the prior art. The modification to the catalytic distillation unit involves improvement of the liquid recycle scheme. The fixed bed reactors combined with the modified catalytic distillation allows for 100% conversion of acetylene and helps to maintain high conversion of the other dienes and acetylenes with no ethylene or propylene conversion under a variety of conditions. These condition variations include but are not limited to the feed diene and acetylene composition, the mol% carbon monoxide in the feed, and catalyst deactivation. With catalytic distillation alone, complete conversion of the acetylene as stated above can not be achieved without ethylene loss, nor would satisfactory operation and control be possible under the variety of conditions experienced during a commercial operation.

The invention discloses a method for preparing isosorbide by using a perfusion reactive distillation device. According to the method, solid sorbitol is used as a raw material, heated and melted, and then subjected to reaction and separation in a perfusion reactive distillation device filled with a catalyst at the same time, and a high-purity dehydration product is prepared. The method is simple inprocess, reaction and rectification are carried out in the same device at the same time, heat energy is intensively utilized, energy loss is small, the production period is shortened, solid-liquid separation is achieved after formed solid catalysts and reaction liquid flow out of a bed layer, and the solid-liquid separation cost is reduced. The contact time of reactants and the catalyst is controllable, the purity of the isosorbide separated from the tower top is high, the crystallization condition can be met, and the method is capable of realizing continuous production, high in selectivity and good in separation effect.

The invention provides application of an arabidopsis thaliana Sec14p-like gene in a plant cell lipid droplet fluorescent marker. According to the application, the arabidopsis thaliana Sec14p-like geneis used as specificity position lipid droplets of the plant cell lipid droplet marker in plant cells. The invention further provides application of the gene in fluorescent detection of the lipid droplets in the plant cells. The application comprises the following specific steps: connecting encoding protein of the gene with fluorescent protein to obtain fused protein; transforming the fused protein into a target plant to mark the plant lipid droplets. Compared with other lipid droplet fluorescent markers with similar functions, the Sec14p-like gene provided by the invention can be connected with different fluorescent protein genes according to specific requirements to be transformed into the plant, and the fused protein with different fluorescent protein is expressed, so that interferenceof plant spontaneous fluorescence is effectively avoided; the Sec14p-like gene can be stably transformed into the plant and the plant lipid droplets are stably marked for a long period; self growth and development of the plant are not influenced.

The invention relates to a source arrangement of a VPE deposition device, comprising a container (2) containing a liquid or solid starting material (1) and having a top opening, a feed line (3) for a reactive gas (4) which reacts with the starting material (1) in order to produce a process gas (5) that contains the starting material. The aim of the invention is to temporally stabilize the source reaction. For this purpose, a cover (6) rests directly on the starting material (1) and defines a volume (8) between the cover and the surface (7) of the starting material (1), the reactive gas (4) flowing through said volume and the feed line (3) running into it.

The invention discloses a lifting type wave energy power generation device. The device comprises a fixed long rod, a first fixed ring, a second fixed ring, a fixed guide rod, a movable ring, a power generation gear, a gear seat, a rack and a floater, wherein the first fixed ring and the second fixed ring are fixed to the fixed long rod, and the two ends of the fixed guide rod are fixed to the first fixed ring and the second fixed ring respectively; the floater sleeves the fixed long rod, and the fixed guide rod penetrates through a through hole in the floater; the movable ring movably sleevesthe fixed long rod, one end of the rack is fixedly connected with the movable ring, the other end of the rack is fixed to the floater, and the rack is parallel to the fixed long rod; and the power generation gear is meshed with the rack. A reciprocating motion mechanism composed of the floater, the gear and the power generation rack makes the wave energy absorption efficiency high, the efficiencyof converting wave energy into power is also high, and the power generation gear can be conveniently used for continuously driving a generator to rotate back and forth to generate continuous electricenergy.

The invention provides an automatic grouting type float collar. The automatic grouting type float collar comprises a main body, a valve body, a ball, a spring and a cement body, wherein the main body is cylindrical; a female thread connected with a casing is arranged at the upper part of the main body; a male thread connected with the casing is arranged at the lower part of the main body; the cement body is arranged between the female thread and the male thread, is cylindrical, and is fixed in the main body; the valve body is arranged in the middle of the cement body, and consists of a valve head and a valve rod; a groove is formed in the lower end of the valve rod; the ball is arranged in the groove; and the spring is arranged between the groove and the valve head for covering the valve rod. The float collar is simple in operation and stable in conversion, enables slurry to enter the casing more smoothly, can quicken the casing discharge speed to the greatest extent, and can reduce the impact force acted on the stratum to the greatest extent; and the automatic grouting type float collar can overcome the characteristics of time and labor wastes in manual grouting.

The invention discloses an internal standard detection method for a furacilin biomarker NF (5-nitro-2-furaldehyde). NF is taken as a detection object, and 2,4-dinitrophenylhydrazine is adopted as a derivatization reagent to convert a target object into a stable compound which responds sensitively under a detector. Accordingly, the limitation caused by the fact that endogenous non-furacilin biomarkers and the like cannot be prevented from being generated in existing research is broken through.

The invention discloses a genetic transformation method of a gene gun mediated elite maize inbred line. The method comprises the steps as follows: 1) a vector containing a target gene is shot into a young embryo of a maize inbred line Jing 724 by a gene gun method to obtain a shot young embryo; 2) a callus induction medium is inoculated with the shot young embryo for culture to obtain embryonic callus; 3) a screening medium is inoculated with the embryonic callus for culture to obtain resistant callus; 4) a regeneration medium is inoculated with the resistant callus for culture to obtain seedlings; and 5) the seedlings are cultured in a rooting medium to obtain a transgenic plant of the maize inbred line Jing 724.

The invention discloses a soil remediation agent prepared by using rice straw biomass charcoal as a raw material and a production method of the soil remediation agent in the technical field of contaminated soil remediation. The soil remediation agent prepared by using the rice straw biochar as the raw material is composed of the following raw materials in percentages by mass: 45-55% of the rice straw biomass charcoal, 20-30% of polyhydroxy iron phosphate, and 20-30% of chitosan-supported amino iron oxyhydroxide, wherein the sum of the mass percentages of the raw materials is 100%. According tothe method, the soil remediation agent is obtained by uniformly mixing the rice straw biomass charcoal, the polyhydroxy iron phosphate and the chitosan-supported amino iron oxyhydroxide and performing mixing by using a stirring system, can reduce bioavailability of Cd and Pb, promote transformation of the Cd and the Pb into a more stable state, can adapt to the nature of soil and remediate a plurality of pollution, and has good remediation effects and low costs.

The invention discloses a hybrid new energy power generation device which comprises a base. Supporting plates are hinged to one end of the outer surface of the top of the base. A storage battery set is fixedly mounted on the outer surface of the top of the base. A center column is welded to the side, close to the storage battery set, of the outer surface of the top of the base. First fixed blocksare fixed to the outer surface of the center column. A telescopic rod is hinged to the end, close to the corresponding supporting plate, of each first fixed block. A generator is fixedly connected tothe end, away from the storage battery set, of the center column. A main shaft is welded to the side wall of the side, away from the storage battery set, of the generator. A wind wheel device is in bolted connection to the outer surface of the main shaft. According to the hybrid new energy power generation device, wind energy and solar energy are combined for power generation, and overall continuous operation can be carried out; and in addition, interference can be reduced to a certain degree, the new energy conversion rate can be increased, and better application prospects can be brought.

The invention discloses an adaptive protocol conversion system for high-voltage direct-current measurement and a using method thereof, and belongs to the technical field of power communication and automation. The adaptive protocol conversion system comprises a photoelectric conversion module, a protocol conversion unit and a communication interface module. The adaptive protocol conversion system can receive optical digital signals of various IEC60044-8 communication protocols such as standard FT3 and state grid FT3 data frame formats specified by IEC60044-8, and convert the optical digital signals into IEC61850-9-1, IEC61850-9-2LE and state grid IEC61850-9-2 network digital message signals meeting the IEC61850-9 standard in a high-speed, stable and real-time manner for optical digital protection, control, metering, measurement and test equipment. The protocol conversion system has the functions of intelligently identifying the Baud rate, the sampling rate, the link layer length and thenumber of check bytes of an input signal, has high-speed, stable and real-time conversion performance, and is widely applied to testing and verification of intelligent substations, converter stationmeasurement systems and digital equipment.

The invention provides a preparation method of a high-temperature proton exchange membrane fuel cell cathode catalyst. The method comprises the following steps: firstly, preparing a black phosphorus nanosheet layer material, further performing mechanical ball milling on the black phosphorus nanosheet layer and an alkali liquor activated graphene sheet layer, and heating in a reaction kettle to effectively form a heterostructure between black phosphorus and activated graphene; and finally, adding a metal precursor and a reducing agent according to a certain proportion, and obtaining the black phosphorus-activated graphene composite material loaded noble metal particles. The electrochemical activity, the utilization rate and the stability of a noble metal catalyst are effectively improved.

The invention discloses an Agrobacterium tumefaciens mediated genetic transformation method for a maize backbone inbred line Beijing 724. The method comprises the following steps: 1) infecting embryosof maize inbred line Beijing 724 with vector Agrobacterium tumefaciens containing a target gene, so as to obtain infected embryos; 2) inoculating a coculture medium with the infected embryos for culture, so as to obtain co-cultured embryos; 3) inoculating a recovery culture medium with the co-cultured embryos for culture, so as to obtain recovery-cultured embryos; 4) inoculating a screening culture medium with the recovery-cultured embryos for culture, so as to obtain resistant calli; 5) inoculating a regeneration culture medium with the resistant calli for culture, so as to obtain young seedlings; and 6) culturing the young seedlings in a rooting culture medium, thereby obtaining transgenic plants of the maize inbred line Beijing 724.