118results about How to "Reduce or avoid the use of" patented technology

The invention discloses a method for growing watermelons. The method includes the steps of processing seeds and accelerating germination, sowing and raising seedlings, applying base fertilizer on the whole land, transplanting the seedlings, performing field management, harvesting and the like. The method for growing watermelons is easy to operate, convenient to manage, good in growth vigor of watermelons, high in disease resistance, uniform in result nature and high in yield, the yield per mu can reach 4000 kg to 5000 kg, the watermelons are large, good in quality, high in sugar content, bright in flesh color, delicate in flesh and high in water content and commodity value, and therefore the method has great significance for increasing income of melon farmers.

The invention discloses a fermented feed additive, a preparation method and application thereof. The fermented feed additive is prepared by fermenting mixed strains and mixed auxiliary materials consisting of monosodium glutamate protein, bean pulp, bran, cottonseed meal, corn fibers, rice bran and powdered rice hulls, wherein the mixed strains are obtained by mixing activated strains of lactobacillus acidophilus, lactobacillus planetarium, lactobacillus casei, saccharomyces cerevisiae, bacillus subtilis and bacillus licheniformis in a proportion of (1-5): (1-5): (1-5): (1-5): (1-5): (1-5); and the dosage of the fermented feed additive is 5 to 100 percent of the weight of the animal feed when used for the animal feed. According to the fermented feed additive, the bean pulp, the bran, the cottonseed meal and other raw auxiliary materials are sufficiently utilized, so that the food consumption in the animal feeding process is reduced; the fermented feed additive can be used to partiallyor completely replace the animal feed, and antibiotic medicaments can be reduced or prevented from being used; and no medicament is left, so that the feeding cost of farmers is reduced.

The invention relates to a method for preparing essential oils. The method comprises the following steps: taking and smashing raw materials; placing the smashed raw materials in an extraction kettle; carrying out supercritical extraction by taking a supercritical carbon dioxide fluid as an extractive solvent and taking alcohol with the volume concentration of 55 to 65 percent as an entrainer, wherein the extraction temperature is 25 to 38 DEG C, the extraction pressure is 15 to 22 MPa, the extraction time is 1.5 to 3 h, the ratio between the quality (Kg) of the raw materials and the volume (L) of the extraction kettle is 0.2 to 0.5 : 1, and the ratio between dose (L) of the entrainer and the volume (L) of the extraction kettle is 0.05 to 0.07 : 1; separating with a separation kettle to obtain an extract; placing the extract obtained through extraction in a molecular still; carrying out molecular distillation under the conditions of 0.3 to 0.5 Pa, 160 to 180 DEG C; and collecting to obtain a corresponding essential oil. The method can be used for extracting essential oils from various plants, so that compared with the prior art, the invention has the advantages of high essential oil yield and high contents.

The invention discloses a biological pesticidal organic fertilizer and a preparation method thereof. The biological pesticidal organic fertilizer is prepared from the following raw materials in parts by weight: 40-50 parts of pig manure, 20-30 parts of tea seed pulp, 10-15 parts of coffee grounds, 8-12 parts of paulownia sawdust, 5-10 parts of phosphogypsum, 4-8 parts of corn cob, 5-10 parts of pepper seed cake, 10-15 parts of mushroom dreg, 8-12 parts of wheat bran, 15-20 parts of bentonite, 10-15 parts of opoka, 2-3 parts of ferrous sulfate, 1-2 parts of manganese sulfate, 3-5 parts of humic acid, 1-2 parts of chinese tallow tree root and bark, 2-3 parts of sophora alopecuroides, 1-2 parts of stemona, 1-3 parts of Artemisia annua, 1.5-2.5 parts of ailanthus leaf, 2-3 parts of derris and 1-2 parts of Radix Euphorbiae Ebractealatae. The organic fertilizer disclosed by the invention has multiple effects of providing nutrients, improving the soil structure, preventing and treating pests and diseases and the like, can promote the crops to quickly grow, enhances the stress tolerance of the crops, can have favorable preventing and treating effects on nematodes and soil insects, reduces or avoids use of chemical pesticides, enhances the soil fertility, regulates the ecological equilibrium of soil, improves the quality of agricultural products, has no chemical residues, and implements yield increase and income increase of agricultural products.

The invention discloses a planting method of strawberries. The method includes the steps of strong seedling cultivation, soil preparation, fertilizer application, planting, field management, harvesting and the like. The planting method can obviously improve the disease resistance of strawberries and lowers the occurrence rate of pest diseases to the maximum extent, thereby effectively lowering or avoiding use of chemical pesticides and improving the quality of strawberries. The produced strawberries are safe and free of pollution. Meanwhile, the planting method can obviously increase the yield of strawberries, increases both production and income for fruit farmers, and is simple, easy to operate, convenient to manage, low in cost, good in benefit and easy to produce and popularize in a large scale.

The invention discloses an efficient environmental-friendly black carp extrusion compound feed and a production method thereof. The method is characterized by comprising the following steps: mixing large amounts of other raw materials such as fish meal, extruded-soybean, soybean meal, rapeseed meal, cottonseed meal, wheat and rice bran and then coarsely crushing a mixture; adding spray-dried animal blood cells, larvae powder, monocalcium phosphate, choline chloride and salt for evenly mixing, carrying out superfine crushing; adding vitamin premis, mineral premix, rheum emodin, L-carnitine and allicin for evenly mixing; and carrying out steam tempering, extrusion, granulation, drying, spraying, cooling and the like on the mixed materials to obtain the product. The black carp extrusion compound feed is simple to prepare and has comprehensive and balanced nutrition, the digestibility of the black carp on feed nutrient substances can be improved, the feed coefficient is reduced, and the nitrogen and phosphorus emission is lowered. The feed has good palatability, excellent stability in water, and less feed wastes and water pollution. The feed can increase the immunity, antioxidation and anti-stress capabilities of the black carp, and promotes the growth of the black carp.

The invention relates to anti-stress and puffed mixed feed for ctenopharyngodon idellus and a production method for the feed. The mixed feed includes the following raw materials in mass percentage: 0-8% of meat and bone meal, 2-5% of broad bean albumen powder, 8-18% of soybean meal, 20-30% of rapeseed dregs, 10-15% of cottonseed meal, 10-20% of wheat, 10-20% of tapioca flour, 5-8% of rice bran, 2-4% of soya-bean oil, 0.2-0.4% of 50% choline chloride, 0.9-1.5% of monocalcium phosphate, 1-2% of vitamin premix, 1-2% of mineral premix, 1-2% of zeolite powder, 0.02-0.1% of GSH, 0.01-0.08% curcumin, 0.01-0.03% of tea polyphenol, 0.05-0.1% of taurine, 0.005-0.01% of rheum emodin, 0.01-0.02% of L-carnitine, and 0.02-0.03% of complex enzyme preparation. The anti-stress and puffed mixed feed improves the digestibility and deposition of feeding ctenopharyngodon idellus to nutrient substances of the feed, improves the immune, antioxidant and anti-stress ability of fish body and promotes growing of ctenopharyngodon idellus.

The invention relates to an antibacterial type castor oil based cationic-aqueous polyurethane emulsion and a preparation method thereof. The preparation method is characterized by including the steps of 1), adding polyester polyol, castor oil, aliphatic diisocyanate, a catalyst and a small-molecular extender to a reactor for reaction; 2), performing reaction after adding a cationic hydrophilic chain extender; 3), adding a neutralizer to a castor oil based cationic-aqueous polyurethane prepolymer prior to adding in deionized water after reaction to perform high-speed shear emulsification, and carrying out removal of butanone to obtain the castor oil based aqueous polyurethane emulsion; 4), adding a nano titanium dioxide dispersion to the castor oil based aqueous polyurethane emulsion for ultrasonic dispersion to obtain the antibacterial type castor oil based cationic-aqueous polyurethane emulsion. The preparation method is simple in process and green and environment friendly, and the emulsion is high in antibacterial property and can be used in the fields of antibiotic finish and the like of fabric.

A multi-physical-field auxiliary dissimilar metal material welding method comprises the following steps of (1) removing dirt on to-be-welded surfaces of two different metal materials, cleaning and preheating after drying; (2) heating through an external heating source under the atmospheric environment, or nitrogen or argon atmosphere to enable a base metal or filling materials at a joint position to be melted into liquid metal, meanwhile applying double physical fields of ultrasonic waves and a magnetic field and obtaining a composite welding seam after the liquid metal at the joint position is cooled and solidified; (3) obtaining a particle reinforced welding seam after the liquid metal at the welding seam is solidified and cooled to be in the indoor temperature. The multi-physical-field auxiliary dissimilar metal material welding method has the advantages of effectively controlling interface reaction and intensifying flowing of the liquid metal by applying the ultrasonic waves and the magnetic field, obtaining the composite welding seam with intermetallic compound particles being enhanced, being beneficial to integral combination of a welded joint, improving mechanical property of the welded joint, refining welding seam crystal particles, reducing residual stress, reducing toxic and side effects to persons and harmful effects to an aluminum steel bonding interface from brazing flux and being beneficial to environmental protection.

The process of extracting effective component from plant material includes crushing solid plant material mechanically, mixing with proper amount of chemical assistant, and extracting the effective component with water or ethanol. In the process, mechanical crushing of solid plant material produces micro shearing in the material interface and breaks cell wall to expose fresh cut surface, and the chemical assistant produces mutual adsorption with effective component, so that the process can alter the microscopic performance of the effective component and raise the leaching rate to 80-400 %. The present invention has shortened extraction period, high extraction efficiency, high extraction specificity, high selectivity, minimized organic solvent consumption and environment friendship.

The invention relates to a preparation method of a nano epoxy resin composite material. The preparation method of the nano epoxy resin composite material is characterized by comprising the following steps of: 1) pre-processing raw materials; 2) extracting a starch nano-crystal under an effect of a sulfuric acid solution so as to obtain white cotton-shaped starch nano-crystal; 3) melting and blending pre-processed liquid epoxy resin and the starch nano-crystal, so as to obtain an epoxy resin / starch nano-crystal composite; 4) adding a curing agent into the epoxy resin / starch nano-crystal composite so as to obtain an epoxy resin / starch nano-crystal prepolymer; and 5) curing and forming the epoxy resin / starch nano-crystal prepolymer, and pouring the epoxy resin / starch nano-crystal prepolymer into a die to form, so as to obtain the nanometer epoxy resin composite material. The preparation method disclosed by the invention has the advantages of simple process, low cost and environmental friendless.

The invention discloses a phosphorus-containing biological based diacid diglycidyl ester with a structure as shown in a formula I, wherein n is 0 or 1, and m satisfies the relation of 0<m<=15. In the preparation of epoxy resin, the phosphorus-containing biological based diacid diglycidyl ester can participate in curing, the introduction of DOPO does not consume epoxy groups of epoxy resin, the compatibility of DOPO with epoxy resin can be enhanced, and the strength and the glass transition temperature of epoxy resin will not be decreased but can even be improved. The invention also provides a preparation method of the phosphorus-containing biological based diacid diglycidyl ester. Itaconic acid, fumaric acid or maleic acid with rich biological sources are used as raw materials to modify DOPO, so as to reduce or avoid the use of petrochemical products from the source and realize the double effects of saving resources and environmental protection.

The invention discloses a diallyl phosphorus-containing bio-based diacid ester and its preparation method and use. The diallyl phosphorus-containing bio-based diacid ester has a structure shown in the formula I, and in the formula I, n is equal to 0 or 1. The diallyl phosphorus-containing bio-based diacid ester can be used as a fire retardant and can be used for preparation of a nonsaturated polyester. The invention also discloses a preparation method of the diallyl phosphorus-containing bio-based diacid ester. The preparation method utilizes itaconic acid, fumaric acid or maleic acid having abundant biological sources as a raw material to realize modification of DOPO. The preparation method has dual effects of saving resources and protecting environment. The invention also discloses a use of a diglycidyl phosphorus-containing bio-based diacid ester. Based on a diglycidyl phosphorus-containing bio-based diacid ester, through introduction of an epoxy group, the diglycidyl phosphorus-containing bio-based diacid ester is obtained and has a structure shown in the formula III, and in the formula III, n is equal to 0 or 1. The diglycidyl phosphorus-containing bio-based diacid ester can be used as a fire retardant and can be used for preparation of epoxy resin.

The invention discloses a method for artificially inducing wasps to kill insects. The method comprises the following steps of fixed cultivation of the wasps, mobile cultivation of the wasps and wasp stocking and insect killing. By the method for artificially inducing the wasps to kill the insects, various insect killing wasp populations are cultivated artificially; the method is targeted; insect killing of the wasps can be implemented all day long or all year round; the wasps are bred in mobile cultivation boxes in a managed and controlled manner; the method is operated safely in a controlled manner; and the insect killing cost is low.

The invention discloses a preparation method of a tackifier. The preparation method comprises the steps as follows: hydrogen-containingsilicone oil and triallyl isocyanurate react fully in the presence of a platinum catalyst and are subjected to vacuum devolatilizationto the constant weight after the reaction is finished.Polyamideadhesion type mixed silicone rubber comprises raw materials as follows: the tackifier and addition type mixed solid silicone rubber. The preparation method of the polyamideadhesion type mixed silicone rubber comprises the step that the tackifier and the addition type mixed solid silicone rubber are mixed. The synthesized tackifier is environment-friendly and non-toxic, usage of a silane coupling agent containing a toxic solvent is reduced or avoided, and environmental protection and clean production are facilitated; the prepared polyamideadhesion type mixed silicone rubber has the better adhesion performance to a polyamide material after being vulcanized and is simple in technology and low in production cost.

The invention discloses a natural plant stabilizer for beverage products as well as a formulation method and application of the natural plant stabilizer. The stabilizer is prepared by mixing the following components: 1 L of concentrated semen coicis milk, 70-90 g of okra colloid polysaccaride and 50-70 g of Chinese yam colloid polysaccaride; or 2 L of concentrated semen coicis milk, 2 L of concentrated buckwheat saccharificaiton liquid, 1 L of concentrated maize juice (or aloe juice, cactus juice), 800-1200 g of okra colloid polysaccaride and 600-850 g of Chinese yam colloid polysaccaride. One or more of water and cooked nut and coarse cereal powder, or cooked medical materials of homology of medicine and food, or preprocessed fruits and vegetables are added according to a certain percentage as needed to prepare a beverage product. In the invention, natural plant materials are utilized to develop a series of purely natural plant stabilizers, and with the adoption of the stabilizer, the technical problems of layering, flocculation and precipitation in the beverage products are solved. In addition, the prepared stabilizer is rich in a plurality of vitamins, amino acids, polysaccarides and beneficial microelements, has the efficacy of nutrition and health care, and is a natural, safe, nutritious and healthy stablization additive for the beverage products. Furthermore, the natural plant stabilizer can be directly formulated into natural plant beverage products with unique color and flavor.

The invention discloses a method for producing low-carbon olefins by using petroleum hydrocarbon. The method comprises the following steps of: making a preheated petroleum hydrocarbon raw material contact a hydrogen combustion catalyst in a hydrogen combustion heating area to directly obtain heat, which is required by the dehydrogenization of the petroleum hydrocarbon, of a hydrogen combustion reaction; allowing the petroleum hydrocarbon to contact a dehydrogenization catalyst in a dehydrogenization area to obtain petroleum hydrocarbon material flow which contains unsaturated olefin compounds, wherein the conversion rate of a dehydrogenization reaction is at least 20 percent; and allowing the obtained petroleum hydrocarbon material flow which contains the unsaturated olefin compounds to contact an olefin cracking catalyst in an olefin cracking reaction area to obtain a petroleum hydrocarbon material flow which contains C2 to C9 olefins and separating the petroleum hydrocarbon material flow which contains C2 to C9 olefins to obtain low-carbon products. When the technical process of the invention is used for producing the low-carbon olefins, the heat transfer effect and the heat transfer efficiency are improved, the energy is saved, the environment is protected, the energy consumption in a separation process is reduced and the low-carbon olefin selectivity of the petroleum olefin raw materials is obviously improved.

The invention relates to a downlink carrier aggregation system and an electronic device. The downlink carrier aggregation system comprises a multiple-input multiple-output single-pole multi-throw switch and multiple multiplexers. The multiple-input multiple-output single-pole multi-throw switch comprises N moving end and N fixed ends. The N moving ends are connected with an antenna switch. The N fixed ends are mutually connected. The N is a positive integer greater than or equal to 2. The fixed ends of the multiple-input multiple-output single-pole multi-throw switch are connected with the command ends of the corresponding multiplexers. According to the system and the electronic device, the downlink carrier aggregation is realized through utilization of the multiple-input multiple-output single-pole multi-throw switch, so expensive devices such as a quadruplexer, a sextuplexer and an octuplexer are prevented from being used. Costs can be reduced, market demands can be satisfied, insertion losses can be reduced, and performance indexes can be optimized.

The invention relates to a method for reducing a 1,3,4-triazole substituent in 1,2,4-triazole alkylation reaction process. The method comprises the steps that 1, 2, 4-triazole and an alkylation reagent are subjected to an alkylation reaction in the presence of an alkali and a catalyst, after the reaction is finished, 1, 2, 4-triazole substituent is obtained through aftertreatment, and the catalystis one or a combination of more of polyether, cyclic crown ether, quaternary ammonium salt, quaternary phosphorus salt, quaternary ammonium base and tertiary amine. The method is simple to operate; the method is wide in application range, the content of the 1, 3, 4-triazole substituent in the alkylation reaction process can be reduced, the yield of the 1, 2, 4-triazole substituent is increased, the reaction time is shortened, the reaction temperature is reduced, solvent use is reduced or avoided, the resource utilization rate is increased, three wastes are reduced, the production cost is reduced, and the method meets the requirements of a green and environment-friendly process.

The invention discloses an organic fertilizer prepared from cow dung and straws and a preparation method thereof. The preparation method comprises the following steps: firstly, uniformly mixing cow dung, fruit and vegetable straws and high-carbon auxiliary materials; stacking a mixture obtained in the previous step layer by layer to form a piled body, and spraying a decomposition agent and fillingthe piled body with a decomposition fertilizer in the process of stacking; and introducing hot air into the piled body, covering the surface of the piled body with a thin film, turning over the piledbody for the first time after a period of time, adding a nitrogen fixing agent in the process, covering the piled body with the thin film for continuous composting, uncovering the thin film after a period of time, and performing free composting to obtain the organic fertilizer. By adopting the method disclosed by the invention, harmless treatment of vegetable waste can be realized, the vegetablewaste can be recycled as a fertilizer, and environmental pollution can be effectively avoided; and the organic fertilizer prepared by adopting the method disclosed by the invention is easily absorbedby crops and plays a positive role in increasing the yield of the crops.

The invention discloses epoxidized soybean oil itaconate with the structural formula I shown in the specification and also discloses a preparation method of the epoxidized soybean oil itaconate and an application of the epoxidized soybean oil itaconate in a coating, further in an ultraviolet curing coating. Itaconic acid which has rich biological sources and is cheap and environment-friendly replaces acrylic acid, photocuring active double bonds are introduced into an epoxidized soybean oil molecule structure, and the toxicity problem caused by AESO residual acrylic acid is solved; besides, more polar carboxyl and ester bonds are introduced, the interaction of soybean oil based oligomers with other components in the coating and base materials can be increased, and the overall performance of the coating is improved. In the formula I shown in the specification, R1, R2, R3 and R4 are independently selected from a formula II shown in the specification, and n represents 0, 1, 2, 3 or 4.

A preparation method of a refuse derived fuel comprises the following steps of: providing fiber sludge, adding a mixed material containing microbial flora, a bulking agent and a microbial fermentation promoter which are mixed according to a predetermined proportion, uniformly mixing, and carrying out fermentation on the uniformly-mixed materials and fiber sludge for a period of time so as to form the solid refuse fuel.

The invention provides a preparation method of vinylon. The preparation method comprises the steps: (a) mixing a polyvinyl alcohol solution with a modified solution to obtain a mixed emulsion; (b) conducting electron beam irradiation on the mixed emulsion obtained in step (a) to obtain a composite emulsion; (c) spinning the composite emulsion obtained in step (b) to obtain the vinylon. Compared with the prior art, the preparation method uses the polyvinyl alcohol solution and the modified solution as main raw materials, and the above raw materials execute grafting reaction by the electron beamirradiation to achieve internal crosslinking of polyvinyl alcohol and the modified material, accordingly the performance of the vinylon is fundamentally improved, and the application field of the vinylon is widened. The prepared vinylon has the characteristics of low hygroscopicity, easy dyeing and good hot water resistance and has very high breaking strength. It is shown through experimental results that the hygroscopicity of the vinylon obtained by the preparation method can achieve 2.97%, dyeing is easy, the hot water resistance can reach 0.08%, and the breaking strength can reach 8.6 cN / dtex.

The invention discloses a soft package battery and a vehicle. The soft package battery comprises a battery module and a cooling device, wherein the battery module comprises at least one battery direct-connection group layer, each battery direct-connection group layer comprises at least two battery direct-connection groups arranged side by side, each battery direct-connection group comprises one ormore battery cell stacks connected in series, and every two adjacent battery direct-connection groups arranged side by side are connected through first tab brackets at two ends of the battery direct-connection group; the cooling device comprises heat-conducting glue and a liquid cooling plate, the liquid cooling plate is a wavy curved plate or a Z-shaped zigzag plate, the liquid cooling plate isarranged between any two adjacent battery direct connection groups which are arranged side by side in each battery direct connection group layer, and the space between the battery direct connection groups and the liquid cooling plate is filled with the heat-conducting glue. According to the soft package battery, the heat conduction efficiency is improved from the arrangement mode of the liquid cooling plates and the structure of the liquid cooling plates, the cooling effect is good, and the internal structure of the battery is simpler.

The invention discloses a water-jetting limescale removing method and device. The water-jetting limescale removing device comprises an umbrella-shaped rotary spraying device, an electric control box, a motor, a rotating device, a water-jetting connector unit, a guide rod expansion and contraction device, a water pump, a water storage tank and a guide rod, wherein the umbrella-shaped rotary spraying device comprises a tensioner, an articulation ring, a flow divider, flow guide tubes, pull rods, annular telescopic tubes, cavitation nozzles, flow guide cavities and annular nozzles; the electric cabinet controls the tensioner to regulate the opening degree of the umbrella-shaped rotary spraying device, so that the umbrella-shaped rotary spraying device can enter an object to be cleaned at a small attitude; the electric control box controls the tensioner again to enable the umbrella-shaped rotary spraying device to expand to be cleaned; and the umbrella-shaped rotary spraying device enables the water-jetting limescale removing device to complete the all-round and no-dead-corner limescale removing operation with the help of the rotation of the rotating device and the expansion and contraction of the guide rod. The water-jetting limescale removing method and device have the advantages as follows: the limescale removing efficiency is high, no pollution is caused, and the adaptability is strong.

The invention discloses a cultivation method for improving the jujube tree yield and aims at solving the problem that jujube trees in the Sichuan area are easily influenced by natural environment and weather, poor in solar radiation, low in fruit bearing rate and Chinese-date yield and accordingly restricts industrialization development. The cultivation method comprises the following steps of land consolidation, seedbed consolidation, seedling cultivation, transplantation, management after transplantation, jujube tree sprouting promotion and fruit picking. The cultivation method is simple, good in operability and capable of remarkably improving the fruit bearing rate of the jujube trees, reducing the influence of the natural environment on Chinese dates and improving the yield. In addition, Chinese-date fruit cracking caused by raining and wind blowing in a Chinese-date mature period can be further effectively decreased, the Chinese-date appearance is ensured, and the Chinese-date quality is improved.

The invention relates to a device and a method for dyeing a dacron fabric and application of the dacron fabric, and the dyeing device comprises a dyeing jar heat exchanger, a dyeing jar and a plate heat exchanger which are connected sequentially; the plate heat exchanger is controlled by a plate heat exchanger PLC; the dyeing jar and the dyeing jar heat exchanger are controlled by the a dyeing jarPLC, and a pressure transmitter in the dyeing jar is connected with the plate heat exchanger PLC; the two PLCs are connected by a signal transmitter; a hot water discharge branch, a hot water inlet branch and a dyeing jar main circulation pump are arranged in a dyeing liquor circulation pipeline on the dyeing jar in the dyeing liquor flowing direction sequentially; valves and flowmeters are arranged on both branches, and a ground drain pre-drain valve and a cold water inlet variable frequency pump are further arranged on the hot water inlet branch; the two branches are in sleeving connectionwith the plate heat exchanger; all valves, flowmeters and pumps are electrically controlled by the plate heat exchanger PLC. Dyeing, high-temperature draining and cleaning are performed, and the oligomer removal rate is higher by 90% or above compared with the traditional craft.

The invention discloses a catalyst for preparing olefins with the same carbon atom number by dehydrogenizing alkane mixtures of C4 and above, and a preparation method and application thereof. The catalyst comprises the following components: a) 0.01 to 5 percent of platinum, b) 0.05 to 5 percent of alkali metal, c) 1 to 20 percent of at least one of alkaline-earth metal and / or rare-earth metal, d)40 to 75 percent of at least one of molecular sieves with the diameters of more than 6A and regular channel structures, and e) an adhesive, wherein the weight ratio of the molecular sieve to the adhesive is 0.5:1-5:1. The catalyst is prepared by a method comprising the steps of impregnating, molding and roasting. In the catalyst, the porous molecular sieve with a regular channel structure is usedas a carrier, so that the selectivity of the catalyst is improved and the service life of the catalyst can be prolonged; and the catalyst is applied to the preparation of low-carbon olefins by dehydrogenizing petroleum saturated hydrocarbons, and can reduce energy consumption and save the cost.

The invention relates to novel compositions that can be vulcanized and that are based on optionally fully or partially hydrogenated nitrile rubbers, which contain epoxy groups, and special cross-linking agents, which no longer require the use of conventional cross-linking agents, such as sulfur in particular. The vulcanized rubbers that can be produced therefrom have very good compression set at room temperature, 100 DEG C, and 150 DEG C and also exhibit high tensile stress together with good elongation at break properties.

The invention discloses a broiler feed for digesting foods, stimulating appetite and promoting growth. Raw materials of the broiler feed comprises corn flour, wheat bran, rapeseed meal, cockroach powder, krill meal, seaweed powder, xylooligosaccharide, Lycium barbarum polysaccharidess, maifan stone powder, zeolite powder, acetic acid, fumaric acid, an amino acid chelate, taurine, barley leaf powder, composite vitamins, a composite protease preparation, vegetable oil and a Chinese herbal medicine additive. The broiler feed for digesting foods, stimulating appetite and promoting growth has the advantages of rich and reasonably matched nutrients, improvement of the gastrointestinal functions of broilers, enhancement of the immunity of the broilers, reduction of the disease incidence, enhancement of the digestion and absorption ability of the broilers, increased conversion rate, and promotion of the growth and development of the broilers, so the economic benefit of broiler farming is effectively increased.