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69results about How to "Control activity" patented technology

Preparation method of graphene/TiO2 composite material

The invention discloses a preparation method of a graphene / TiO2 composite material. The method comprises the steps of preparation of graphene oxide, preparation of nano TiO2 and preparation of graphene / TiO2 composite material. The prepared composite material has the antibacterial property, and is capable of improving the antibacterial property and the environmental protection performance of a paint when being applied to the paint.
Owner:四川嘉宝莉涂料有限公司

Polymorphic nitro-compound fertilizer and production method thereof

The invention discloses a polymorphic nitro-compound fertilizer, relating to the technical field of agricultural fertilizers. The polymorphic nitro-compound fertilizer comprises the following raw materials in parts by weight: 30-150 parts of urea, 160-600 parts of nitramine phosphorus, 0-120 parts of ammonium sulfate, 180-250 parts of potassium sulphate, 100-200 parts of monoammonium phosphate and 1-10 parts of medium and micro fertilizers. The polymorphic nitro-compound fertilizer is produced by mixing, granulating and cooling the raw materials. The polymorphic nitro-compound fertilizer adopts scientific proportion, has complete nutrition, can continuously nourish crops at gradient so as to be more beneficial to the full absorption of the vegetable crops, and can remarkably promote the growth and high and stable yield of the crops, thus having strong market competitiveness.
Owner:STANLEY AGRI GRP CO LTD

Preparation method of fine elemental spherical metal powder particles for 3D printing

The invention relates to a preparation method of fine elemental spherical metal powder particles for 3D printing, and belongs to the technical field of metal powder preparation. The preparation method comprises the following steps: adopting a high-purity metal block material as a raw material; carrying out arc evaporation under the atmosphere of inert gas, and simultaneously charging hydrogen to control the heat conduction and the activity of gas atoms of the metal, so that the gas atoms are cooled and deposited, and high-purity elemental nanometer metal powder particles are obtained; conducting aggregating granulation on the high-purity elemental nanometer metal powder particles, so that micron-sized elemental metal powder of relatively high density is obtained; and finally, conducting heat treatment on the micron-sized elemental metal powder obtained after granulation, so that functions of degumming and densified consolidation are realized, and the elemental metal powder particles of which the granularity, the sphericity, the liquidity and the oxygen content meet requirements of 3D printing are obtained. Compared with other technical methods, the preparation method has the advantages that the sphericity, the particle size distribution and the oxygen content of metal particles are highly controllable, the process is simple, and the cost is low.
Owner:BEIJING UNIV OF TECH

Medical fertilizer with function of preventing and treating root-knot nematode and preparation method as well as application thereof

The invention discloses a medical fertilizer with a function of preventing and treating root-knot nematode and a preparation method as well as application thereof. The medical fertilizer is prepared from the following components in parts by weight: 10 to 75 parts of major element fertilizer, 1 to 10 parts of medium trace element fertilizer, 1 to 10 parts of humic acid-containing raw material, 1 to 10 parts of chitosan oligosaccharide, 0.1 to 10 parts of abamectin, 0.1 to 10 parts of iprodione, 0.1 to 10 parts of fluopyram, 1 to 10 parts of surfactant and the balance of filler, wherein the parts of all the components are 100 parts. The fertilizers, biostimulants such as humid acid and the chitosan oligosaccharide as well as pesticides are compounded, so nutrition can be provided for crops, and root-knot nematode disease can also be effectively prevented and treated; time and labor are saved; the medical fertilizer is a novel environment-friendly product meeting the pesticide and chemical fertilizer zero growth requirement of the Ministry of Agriculture.
Owner:山东康德源农业科技有限公司

Acid electrode with good process performance

InactiveCN101954554AImprove all-position welding adaptabilityImprove restriking performanceWelding/cutting media/materialsSoldering mediaSlagRare earth
The invention discloses an acid electrode with good process performance, and belongs to the technical field of welding materials. The electrode consists of a core wire and a coating. The coating is characterized by comprising the following components in percentage by weight: 25 to 35 percent of titanium pigment and rutile, 15 to 20 percent of selected ilmenite, 5 to 10 percent of marble and dolomite, 5 to 10 percent of white mud, 3 to 8 percent of mica, 8 to 15 percent of potash feldspar, 4 to 7 percent of quartz sand, 8 to 13 percent of manganese-silicon, 2 to 4.5 percent of chalk, 1 to 1.5 percent of sodium carbonate, 3 to 5 percent of organic matters and 0.5 to 2 percent of rare earth magnesium powder, atomized iron powder and aluminum powder, wherein the grain size of each component is 40 to 200 meshes. Potassium sodium water glass is used as a bonding agent; the modulus is 2.4 to 2.7; and the Baume concentration is 36 to 39. After uniformly mixing the components of the coating of the electrode, adding the water glass and stirring uniformly to obtain a mixture, a carbon steel covered electrode is manufactured by extruding the mixture on a core wire H08A; or a low-alloy steel electrode is manufactured by extruding the mixture on a low-alloy steel core wire. The electrode of the invention has the characteristics of high arc reignition, slag detachability and all-position welding adaptability, and low cost of electrode raw material.
Owner:SHANDONG JIANZHU UNIV

Lead-cadmium compound conditioner for rice field soil as well as preparation and application methods thereof

The invention discloses a lead-cadmium compound conditioner for rice field soil as well as preparation and application methods of the lead-cadmium compound conditioner. The conditioner is composed of the raw materials in mass fractions: 30-50% of calcium carbonate, 5-10% of hydroxyapatite, 20-30% of sepiolite and 20-30% of zeolite; the preparation of the conditioner comprises the following steps of: weighing various raw materials according to the mass fractions of the components of the lead-cadmium compound conditioner; continuously stirring the various raw materials in a stirring device for at least 30 min, and thoroughly stirring and evenly mixing all the materials; and the method of application of the conditioner comprises the following steps of: (1) analyzing the total quantity of lead and cadmium in the rice field and the content of lead and cadmium in exchange state; (2) determining the pollution level of the rice field soil by using an evaluation model; (3) applying the lead-cadmium compound conditioner according to the lead-cadmium pollution level in the rice field, and applying the lead-cadmium compound conditioner to the slightly polluted rice field at 100-150 kg / mu, to the mildly polluted rice field by 150-300 kg / mu and to medium-polluted rice field at 300-600 kg / mu, and balancing and stabilizing for 10-15 days; and (4) analyzing and measuring the content of lead and cadmium in exchange state in the rice field, and if the fixed rate is lower than 90%, additionally applying the conditioner at 100-150 kg / mu.
Owner:廖柏寒 +1

Nanometer zirconia powder and synthesis method thereof

The invention aims to provide nanometer zirconia powder and a synthesis method thereof. The nanometer zirconia powder is high in crystallinity degree, slight in agglomeration, small in grain size, narrow in distribution and large in specific area. The nanometer zirconia powder is prepared from, by weight, 96.5-97% of ZrO2 and 3-3.5% of Y2O3. The synthesis method for the nanometer zirconia powder comprises the following sequentially-executed steps of preparing a zirconium compound and a yttrium oxide solution; preparing an oxalic acid solution; carrying out filtering; carrying out a precipitation reaction; carrying out a thermal decomposition reaction after washing and drying; carrying out wet grinding; carrying out a supercritical hydrothermal reaction. The synthesis method is applied to the technical field of synthesis of the nanometer zirconia powder.
Owner:ZHUHAI LUCKYMAN TECH CO LTD

Brewing technology for cherry wine

The invention relates to a brewing technology for cherry wine and belongs to the technical field of wine brewing. The brewing technology comprises the following steps: picking cherries; cleaning and drying; removing stems and kernels; breaking; fermenting; filtering, thereby obtaining cherry wine, wherein in the step of fermenting, cherry juice is added into a fermentation tank; yeast is added; the fermenting starting temperature is controlled at 18-20 DEG C; after starting to ferment for 72 hours, cherry brandy is added till the alcoholic strength is 8-11% voL; sugar is remained and fermentation is interrupted; mixing the cherry brandy with the yeast for 30 days and then separating, thereby obtaining the raw cherry wine; the temperature is controlled at 8-10 DEG C; standing is performed for 58-62 days and centrifugal treatment is performed; and filtering is performed, thereby obtaining the cherry wine. The cherry wine brewed according to the brewing technology is complete and balanced in nutrition and wine body, pure in taste, and rich in fragrance and can meet the requirements of consumers at different levels.
Owner:QINHUANGDAO YINGYUN LIQUOR IND

Nano silicon window layer with gradient band gap characteristic and preparation method thereof

The invention relates to a nano silicon window layer with the gradient band gap characteristic, which is formed by depositing on the surface of a sample to be processed, wherein the surface of the sample to be processed is sequentially stacked with a metal back electrode M, a transparent conductive back electrode T1, an n-type Si-based thin film N and an intrinsic Si-based thin film I. The nano silicon window layer is formed by sequentially stacking a silicon thin film P1, a silicon thin film P2 and a silicon thin film P3. A preparation method of the nano silicon window layer comprises the following steps: depositing the p-type silicon thin film P1 with small thickness under a low glow power; then gradually raising the power and depositing the thin film P2; and finally, and completing the window layer P3 under a high power. The nano silicon window layer has the advantages that when the nano silicon window layer is applied to the window layer of an n-i-p-type silicon-based thin film solar cell, high electric conductance and wide band gap can be acquired, the bombardment of a solar cell i / p interface can be effectively reduced, the band gap matching between an intrinsic layer and the window layer can be implemented and the filling factor, the open-circuit voltage and the spectral response of the solar cell are obviously improved, so that the silicon-based thin film solar cell with high photoelectric conversion efficiency is obtained.
Owner:NANKAI UNIV

Respiratory training system and method based on bioelectric signals

The invention discloses a respiratory training system and method based on bioelectric signals. The respiratory training system comprises a correct respiratory training module, a host control module, a myoelectricity acquisition module and a myoelectricity feedback module, wherein the correct respiratory training module is used for a user to carry out correct respiration essential training with the guidance of a respiration therapist; the host control module is used for receiving the myoelectric signals, carrying out signal processing and pattern recognition, controlling the myoelectricity feedback module to generate feedback stimulation, and meanwhile further controlling the correct respiratory training module to complete cycles of correct respiratory training; the myoelectricity acquisition module is used for recording and acquiring the electric signals of muscles related to respiration muscle groups of the user through electrodes and transmitting the electric signals to the host control module; the myoelectricity feedback module is used for receiving feedback control instructions sent from the host control module and offering related myoelectricity feedback stimulation to the respiration muscle groups of the user through the electrodes. According to the system and the method, the user can be effectively helped to learn, train, master and consolidate a correct respiration method in a biological feedback manner, so that the accuracy and the efficiency of respiratory training are improved.
Owner:SHANGHAI NATSYN ELECTRONICS TECH CO LTD

Process for preparing UO3 through uranyl nitrate air-blast atomization dry pyrolysis denitration

The invention discloses a process for preparing UO3 through uranyl nitrate air-blast atomization dry pyrolysis denitration. According to the process, a designed and processed combustion chamber and a denitration reactor are adopted as main body equipment of uranyl nitrate pyrolysis denitration, a high-temperature high-speed gas generated from combustion of propane and excessive air is adopted as a heat source and an atomization gas source, and a uranyl nitrate liquid is subjected to drying dehydration and pyrolysis denitration. The process has the advantages of being short in process procedure, simple in equipment structure, stable in operation and high in UNH (Uranyl-Nitrate Hexahydrate) conversion rate, the prepared UO3 is uniform in granularity distribution and good in chemical reaction activity, and the like.
Owner:THE 404 COMPANY LIMITED CHINA NAT NUCLEAR

Wide-lytic-spectrum Vibrio alginolyticus phage, composition thereof, kit and application of kit

The invention belongs to the technical field of research and development of Vibrio alginolyticus phages and particularly relates to a wide-lytic-spectrum Vibrio alginolyticus phage, composition thereof, and a kit. The wide-lytic-spectrum Vibrio alginolyticus phage is Vibrio alginolyticus phage VAP7 collected under CCTCC NO: M 2018767. The inventio also discloses application of the Vibrio alginolyticus phage, a Vibrio alginolyticus phage composition, or a reagent or a kit containing the Vibrio alginolyticus phage or the Vibrio alginolyticus phage composition in the killing and / or prevention ofVibrio microbes. The Vibrio alginolyticus phage herein has a wide host range, has high toxicity to host bacteria under low concentration, can well propagate on nonpathogenic bacterial hosts, and is suitable for large-scale industrial production. Good strain resources can be provided for the application of phagotherapy.
Owner:PHAGELUX (NANJING) BIO-TECH CO LTD

Preparation method for modified palladium-carbon catalyst for Suzuki coupling reaction

The invention discloses a preparation method for modified palladium-carbon catalyst for Suzuki coupling reaction. The catalyst is composed of active carbon, and palladium and nickel loaded on the active carbon, wherein the mass percent of the palladium is 5-10%, and the mass percent of the nickel is 0.5-3%. The preparation method for the modified palladium-carbon catalyst for the Suzuki coupling reaction includes steps that 1, preparing nano-nickel sol; 2, preparing active carbon carrier; 3, preparing nickel-containing size; 4, preparing palladium-containing solution; 5, adding the palladium-containing solution to the nickel-containing size, preserving the heat, dipping and filtering to obtain a piece of filter cake; 6, performing reduction treatment, and washing to obtain the modified palladium-carbon catalyst. The modified palladium-carbon catalyst prepared by the method can be used for the Suzuki coupling reaction, and the modified palladium-carbon catalyst has advantages of high reaction activity, high selectivity, good stability and the like; the catalyst is easy to be separated from the product, the catalyst preparation technique is simple, the catalyst can be used repeatedly, the precious metal-palladium is easy to recycle, the pollution and energy consumption are reduced, and the economical benefit and environment significance are important.
Owner:XIAN CATALYST NEW MATERIALS CO LTD

Ultrahigh specific capacity mesoporous Co3O4 nanosheet electrode material and preparation method thereof

The invention provides an ultrahigh specific capacity mesoporous Co3O4 nanosheet electrode material and a preparation method thereof. The preparation method comprises the following steps that 1) foam nickel is adopted to act as the three-electrode system of a working electrode, the mixed aqueous solution of Co(NO3)2 and KCl acts as an electrolyte solution, and a Co(OH)2 nanosheet is deposited on the surface of foam nickel through constant current so that a Co(OH)2 nanosheet precursor is acquired; and 2) the Co(OH)2 nanosheet precursor acquired in the step 1) is cleaned and dried, and then high temperature annealing is performed at temperature of 350-450 DEG C so that the mesoporous Co3O4 nanosheet electrode material is acquired. According to the preparation method of the ultrahigh specific capacity mesoporous Co3O4 nanosheet electrode material, the preparation method has the characteristics of being simple in technology, green and environment-friendly and low in cost, and the acquired Co3O4 nanosheet electrode material has relatively high specific capacity.
Owner:SOUTH CHINA NORMAL UNIVERSITY

High-lysis klebsiella pneumoniae bacteriophage RDP-KP-20007 and application thereof

ActiveCN113583973AHas a strong cracking effectGood cracking effectAntibacterial agentsBiocideK pneumoniaeBacteriophage tail
The invention discloses a high-lysis klebsiella pneumoniae bacteriophage RKP-KP-20007 and application thereof, the host of the high-lysis klebsiella pneumoniae bacteriophage RKP-KP-20007 is klebsiella pneumoniae, observation through an electron microscope shows that the head of the bacteriophage is an eicosahedron and is in stereo symmetry, the length of the head is 72.640 nm, the length of the tail of the bacteriophage is 177.797 nm, the bacteriophage is a long-tail bacteriophage family with the tail, and the preservation number is CGMCC No. 22495. The Klebsiella pneumoniae bacteriophage RKP-KP-20007 has a strong cracking effect on Klebsiella pneumoniae in a poultry breeding environment, can be used for efficiently treating Klebsiella pneumoniae diseases caused by pathogenic bacteria in poultry breeding, and can be used as a disinfectant. A bacteriophage source is provided for industrial, large-scale and programmed production of bacteriophages and treatment of poultry breeding bacterial diseases caused by klebsiella pneumoniae.
Owner:RECOM QINGDAO BIOTECH CO LTD

Process combination for preparing fresh tea flavor extract

The invention mainly relates to process combination for preparing a fresh tea flavor extract, in particular to the process combination for preparing a fresh tea flavor green or black tea extract from fresh tea without fixing at a low temperature by crushing, homogenization, centrifuging, microfiltration and membrane concentration processes.
Owner:广州泽力医药科技有限公司

3D printing konjac glue gel stent, preparing method and application

The invention discloses a 3D printing konjac glue gel stent, a preparing method and application. Konjac glue gel is methacrylated konjac glue gel. The preparing method includes the following steps ofmodifying a konjac glue gel raw material through methacrylic anhydride, conducting dialysis and freeze-drying to obtain methacrylated konjac glue gel powder, dissolving the methacrylated konjac glue gel powder in PBS with a photoinitiator to obtain hydrogel, combining the obtained hydrogel with chondrocyte for printing through a 3D-Bioplotter system, and then conducting ultraviolet crosslinking toobtain the konjac glue gel stent product. The stent combined with the chondrocyte has the potential for cartilage repair engineering. The 3D printing konjac glue gel stent has the effects of being good in biocompatibility, controllable in material performance, low in cost, wide in source and simple in operation.
Owner:GUANGXI MEDICAL UNIVERSITY

Medical surgical instrument safety device

InactiveCN110368051AControl rotation effectTo achieve the effect of automatic resetSurgical staplesWound clampsMoving frameSurgical instrument
The invention relates to the technical field of medical equipment, and discloses a medical surgical instrument safety device. The medical surgical instrument safety device comprises a casing. A fixingplate is fixedly connected to the inner wall of the casing, and a fixing block is fixedly connected to the front surface of the fixing plate. A limiting block is fixedly connected to the front surface of the fixing block, and a moving frame is slidably connected to the outer side of the fixing plate and located on the reserve side of the limiting block. A fixing rod is fixedly connected to the left side of the moving frame, and a safety rod is movably connected to the right side of the fixing rod. A moving rod is movably connected to the lower portion of the front surface of the moving frameand located below the fixing plate. A handle is movably connected to the inner wall of the casing. Through cooperative use of a rotating disc and the handle, the rotating disc is controlled to rotate;through cooperative use of the rotating disc and a second spring, the rotating disc can be stored in the second spring, the second spring is released to push the rotating disc to rotate, and automatic reset of the rotating disc is realized.
Owner:湖南丹尼尔智能科技有限公司

Browning-inhibiting leafy vegetable harvesting method and device

The invention relates to a browning-inhibiting leafy vegetable harvesting method and device. According to the browning-inhibiting leafy vegetable harvesting method and device, leafy vegetables are harvested through an intelligent harvesting tool; when the intelligent harvesting tool cuts off the stalk of a leafy vegetable, rapidly-absorbed antioxidant solution is released from the edge of the intelligent harvesting tool to the incision of the stalk of the leafy vegetable to prevent callus outflow of the leaf vegetable; during cutting, preservation covering liquid is released from the middle orthe back of the tool body of the intelligent harvesting tool to the lower portion of a vegetable body and builds films rapidly to cover the stalk and / or the stalk branches of the leafy vegetable; theintelligent harvesting tool comprises the tool body, a rapidly-absorbed antioxidant solution releasing unit and a preservation covering liquid rapidly releasing unit, wherein the rapidly-absorbed antioxidant solution releasing unit is arranged on the edge of the tool body, and the preservation covering liquid rapidly releasing device is arranged on the middle or the back of the tool body. The browning-inhibiting leafy vegetable harvesting method and device can achieve timely application of preserving agent during leafy vegetable harvesting to achieve control over leafy vegetable browning froma field harvesting stage, thereby effectively improving the freshness of the leafy vegetables and prolonging the shelf life of the leafy vegetables.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES

Chemical semi-synthetic process of 10-hydroxycamptothecin

The invention discloses a semisynthesis method for 10-hydroxycamptothecin, which takes camptothecin as a raw material to prepare the 10-hydroxycamptothecin through the combination of catalytic hydrogenation and oxidation. The method is characterized by realizing a process of the combination of hydrogenation and oxidation, saving operation steps, in particular improving a catalyst by using a Pd / C catalyst containing 5 to 10 percent of palladium and recycling the catalyst, improving the manageability of the reaction by changing high-temperature reaction to normal-temperature reaction, and improving the selectivity of oxidation by applying oxidizers such as 2-iodoxybenzoic acid during the oxidation reaction. Compared with the prior art, the method has the advantages of hydrogenation reaction which is simple and convenient in operation and is low in cost, oxidation reaction which is high in selectivity, total yield of the two reactions of the whole production process which is increased to more than 85 percent, and suitability for industrial production.
Owner:SHANGHAI LONGXIANG BIO MEDICINE DEV CO LTD

Breeding method for green chickens

The invention belongs to the technical field of feeding of animals, and in particular relates to a breeding method for green chickens. The breeding method for the green chickens comprises the following steps of: 1, morning feeding, namely generally, carrying out preliminary feeding at 5 to 7 o'clock in the morning, and adding much running water at the preliminary feeding to meet the water feeding amount of each chicken of 2 to 4 ml; 2, preliminary artificial driving, namely after the preliminary feeding is completed for 2 hours, carrying out artificial driving on the chickens to make the chickens do exercises fully; 3, intermittent feeding, namely feeding the chickens every 4 to 6 hours; 4, prolonging of the illumination time, namely prolonging the illumination time of the chickens with incandescent light bulbs in the late autumn and winter, to meet the time of 1.5 to 2.5 hours every day; 5, adding of green dietary supplements, namely adding the green dietary supplements at the second time every day, wherein the adding amount for each chicken is 2 to 4 g; and 6, secondary artificial driving, namely after feeding of the third time is completed every day, carrying out artificial driving on the chickens to make the chickens do exercises fully.
Owner:牟定县和氏科技发展有限公司

Rapid sand fixation treatment method for moving dune

In order to quickly control the mobility of the moving dune caused by wind erosion, on the basis of establishing a physical sand barrier, fast-growing sand-fixing plants are selected, and a moving dune treatment method capable of quickly forming a sand-fixing effect is established. The physical sand barrier adopts straw checks made of straw, the straw checks gridding physical sand barrier is established on the surface of the moving dune, the specification of the straw checks is 1m * 1m, and the ground surface height of the straw checks is reserved to be 20-30cm. Mangosteen rock astragalus membranaceus which grows rapidly is selected as a main planting species, the planting spacing is 1m * 1m, and a field planting point is a central point of every grass square grid; according to the method, a herbaceous sand-fixing plant artemisia desertorum (artemisia desertorum is planted in a broadcast sowing manner, and the sowing rate is 750-1000g / mu) which grows quickly is selected as a configuration species. After the species combination sand stabilization mode is implemented, the vegetation coverage of 40% or above can be rapidly formed within 1-2 years, the fixing of the moving dune can be rapidly realized, the movement of the dune can be effectively controlled, and the method is a quick-acting moving dune rapid treatment technology.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI

Method for extracting myosin of noto-pleural muscles of freshwater fish

The invention relates to a method for extracting myosin of noto-pleural muscles of freshwater fish, which belongs to the technical field of aquatic products. The method comprises the following steps: firstly, putting live fish into a pass box filled with fresh water and standing for 1-2 hours; rapidly taking the noto-pleural muscles of the live fish; washing fish dices by ice water; rinsing by a buffering solution; and finally, preparing a myosin solution. According to the method, the influences of cathepsin L are eliminated when the myosin of the noto-pleural muscles of aquaculture fish so as to obtain the high-purity myosin of fish.
Owner:NANJING AGRICULTURAL UNIVERSITY

Method for prolonging freshness lifetime of harvested citrus reiculata blanco

The invention provides a method for prolonging the freshness lifetime of harvested citrus reiculata blanco and relates to the technical field of freshness keeping of fruits and vegetables. The methodfor prolonging the freshness lifetime of the harvested citrus reiculata blanco, provided by the invention, comprises the following steps: (1) pre-treating the citrus reiculata blanco; (2) carrying outheat shock treatment; (3) storing; (4) pre-cooling; and (5) storing at a low temperature. According to the method for prolonging the freshness lifetime of the harvested citrus reiculata blanco, the freshness lifetime of the citrus reiculata blanco can be prolonged and the mouthfeel, sweetness, and color and luster of the citrus reiculata blanco are not influenced; the freshness keeping of the citrus reiculata blanco is realized and the disease resisting capability of the citrus reiculata blanco is greatly enhanced; the yield is improved and the rotting speed is delayed.
Owner:靖西海越农业有限公司

A kind of raising device of beetroot insect

The invention discloses a breeding device for Cypera japonica insects, which comprises a cup body, a cup cover and a cup cover. The cup body is a cylindrical structure filled with sterile soil with a water content of 30%. The top of the cup is a cup cover, a movable grille is arranged between the cup cover and the cup body, and a cup cover is arranged above the cup cover. The consumables of the device are relatively economical and small in size, which is convenient for placing a large number of them in an artificial climate box for breeding, and has achieved very good results.
Owner:GUIZHOU UNIV

Mutein, method for producing said mutein, and gene encoding said mutein

PendingCN106459952AControl activityControl outputBiocideClimate change adaptation3 hydroxy 3 methylglutaryl coa reductaseArabidopsis thaliana
Provided is a mutein having mutations of specific amino acid residues of HMGR, which is a rate-limiting enzyme of isoprene monomer biosynthesis in the polyisoprenoid biosynthetic pathway. The invention relates to a mutein in which at least one amino acid residue selected from the group consisting of positions 91, 225, 257, 287, 339, 411, 470, 509, and 574 and amino acid residues of positions corresponding to these in Arabidopsis thaliana 3-hydroxy-3-methylglutaryl-CoA reductase shown by SEQ ID NO:1 have been deleted or substituted by another amino acid residue in 3-hydroxy-3-methylglutaryl-CoA reductase.
Owner:OSAKA UNIV +1

Process for preparing propylene through combined reaction feeding and catalyst regeneration countercurrent contact dehydrogenation

The invention discloses a process for preparing propylene by combined reaction feeding and catalyst regeneration countercurrent contact dehydrogenation, wherein the process comprises catalytic dehydrogenation and catalyst cyclic regeneration. According to the process, raw materials are heated by a heater, and the heated raw materials enter a first reactor, contact a catalyst, and are subjected toa catalytic dehydrogenation reaction; after the reaction is performed for a period of time, the temperature is reduced, the reaction speed is reduced, the process gas discharged from the first reactorenters the subsequent reactor through the heater to react with a catalyst, and the catalytic dehydrogenation reaction is circularly carried out multiple times; and finally the product gas dischargedfrom the terminal reactor enters a separation system and is separated to obtain the final product propylene, wherein the to-be-regenerated catalyst participating in the reaction in the first reactor is collected through a catalyst collector, is lifted to a separation hopper through a fan, and is elutriated and burnt to obtain a catalyst capable of being recycled, then the catalyst is lifted and sent back to the terminal reactor, and then the catalyst sequentially flows into all stages of the reactors to participate in reaction, so that catalyst circulation is realized.
Owner:ZHEJIANG SATELLITE ENERGY CO LTD
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