47results about How to "Extended active time" patented technology

The invention relates to a Co-modified silicoaluminophosphate molecular sieve, a preparation method and catalytic application in MTO thereof. The structural formula of the molecular sieve is (0.2-5.0) R: (Si0.01-1 Al0.5-1 P0.1-3):10- 400H2O: (0.01-0.5) Co. Compared with the prior art, the invention provides a Co-SAPO-34 molecular sieve, which is used as a catalyst and applied to prepare light olefins by using methanol, the transformation ratio of the methanol material achieves 100 percent. Due to the selectivity and service life of the light olefins, the Co-modified silicoaluminophosphate molecular sieve, the preparation method and the catalytic application in MTO of the invention is characterized by high selectivity (ethylene plus propylene), high yield rate and long service life of the catalytic agent.

The invention relates to a probiotic solid beverage. The probiotic solid beverage comprises the following components in percentage by weight: 2-10% of lactic acid bacteria powder, 30-50% of fructo-oligosaccharide, 5-15% of xylooligosaccharide, 10-20% of maltodextrin, 5-20% of erythritol and 5-15% of pomegranate fruit powder. According to the probiotic solid beverage disclosed by the invention, thefructo-oligosaccharide has obvious proliferation effect on beneficial bacteria of bifidobacterium lactis, lactobacilli and lactobacillus rhamnosus in gastrointestinal tracts of human bodies; the probiotics are bacteria beneficial to human, can maintain bacterial colonies balanced in the intestinal tracts, can assist in eliminating diarrhea, and can stop constipation; and the fructo-oligosaccharide and the probiotic powder are in collocation for eating, so that diarrhea can be eliminated, constipation can also be stopped, and the fructo-oligosaccharide and the probiotic powder jointly have theeffect of two-way regulation on the intestinal tracts.

The present invention discloses a nutritional composition for improving oral health. The nutritional composition comprises the following raw materials in parts by weight: 5-30 parts of probiotics, 20-80 parts of prebiotics and 0.1-2 parts of epigallocatechin gallate; the probiotics are selected from at least one of lactobacillus rhamnosus, lactobacillus reuteri, lactobacillus helveticus, and lactobacillus salivarius; and the prebiotics are selected from at least one of inulin, oligofructose, galactooligosaccharide, xylooligosaccharide, stachyose, oligoisomaltose, raffinose, trehalose, and lactitol. At the same time, the present invention also provides a use of the nutritional composition in preparations of oral health-care products. The provided nutritional composition can inhibit colonization of caries inducing streptococcus mutans, reduces adhesion of subgingival gingiva pathogenic bacteria, inhibits bad breath, promotes the proliferation of the oral probiotics, prevents the occurrence and development of dental erosion and oral cancers, and can effectively solve the oral problems caused by alcoholism, smoking, staying up late, irregular diet, long-term consumption of acidic substances, etc.

The invention discloses a one alkyl triphenyl substituted group based phosphonium salt preparation method and application. The preparation method includes that a one alkyl triphenyl phosphonium salt halide I is obtained through reaction of several alkyl halides and triphenylphosphine in a DMF (dimethyl formamide) solvent through nucleophilic substitution, and an aqueous solution of a compound I and a sodium tetrafluoroborate aqueous solution are subjected to ion exchange to prepare the phosphonium salt through high yield of recrystallization. The phosphonium salt preparation method and application has the advantages of low cost and easy obtaining of raw materials and low cost, one alkyl triphenyl substituted group containing phosphonium salt II serving as a phase transfer catalyst has the advantages of high catalytic activity, less required dose, long activity time, high thermal stability and low toxicity, high reaction recovery and the like in catalytic fluorine chlorine exchange reaction, and wide commercial application prospect is achieved.

The invention relates to a textile which is equipped with a biocidal substance. The textile according to the invention is characterized in that 2-n-octyl-4-isothazoline-3-on is contained as the biocidal substance and optionally one or more other biocides, and in that the biocidal substance is embedded in aminoplastic resin microparticles. By embedding the biocidal substance in the microparticles the biocidal substance remains on the textile during drying and condensation while the textile is finished. In practice, the biocidal substance is released only slowly and is not washed out when the textile is exposed to rain or soaked, thereby preventing the biocidal substance from escaping largely already when the textile is finished or preventing it from being washed out from canvas, awnings, filters, tarpaulin, shower curtains and the like after a few downpours.

A node (110) and a method (500) therein, for authenticating a mobile device (120) over an air interface are provided. The node (110) comprises a transmitter (630), a processor (620), and a receiver (610). The processor (620) is configured to detect the mobile device (120), to generate a nonce, to determine a key shared with the mobile device (120) and to compute a second MAC based on the generated nonce and the key, and to construct a second training sequence comprising the second MAC. The transmitter (630) is configured to transmit the generated nonce to the mobile device (120). The receiver (610) is configured to receive a first training sequence comprising a first MAC from the mobile device (120) and to tune the receiving circuits of the receiver (610), based on the first and second training sequences; and to receive a further message from the mobile device (120). Further, the processor (620) is configured to decode the further message and authenticate the mobile device (120) when the further message is decoded correctly, otherwise reject the mobile device (120). Also, a mobile device (120) and a method (700) therein are disclosed.

The invention discloses a chain grate-rotary kiln flue gas treatment process and treatment system. A control method of an SNCR-SCR coupling denitration system is adopted, a composite additive is added into an SNCR denitration catalyst or a novel SNCR composite ammonia agent is provided; and meanwhile, a movable airflow balance plate is additionally arranged between a PH section and a TPH section of a chain grate, the air pressure of the TPH section is controlled to be larger than or equal to the air pressure of the PH section by utilizing the position change of the airflow balance plate, so that the problem that the content of NOx in flue gas of the TPH section is increased due to the fact that high-NOx-content waste gas of the PH section flees towards the TPH section is prevented. The optimal coupling ultralow NOx emission technology can be formed, the denitration efficiency can be effectively guaranteed on the premise that SNCR ammonia consumption is reduced, meanwhile, the service lifetime of an SCR denitration catalyst can be prolonged, and the denitration operation cost and investment cost of the system are obviously reduced. The utilization efficiency of a flue gas denitration reducing agent is further improved, and the escape amount of NH3 is reduced.

The invention discloses a probiotic solid beverage. The probiotic solid beverage comprises raw materials, auxiliary materials and probiotic powder, wherein the raw materials comprise the components in grams by weight: 1.2 grams of fructo-oligosaccharide and 0.6 grams of stachyose; the auxiliary materials comprise the following raw materials in grams by weight of 0.1 gram of yeast powder and 0.1 gram of strawberry powder; and the probiotic powder comprises 20 hundred millions of bifidobacterium animalis, 80 hundred millions of bifidobacterium lactis and 80 hundred millions of lactobacillus rhamnosus. The probiotic solid beverage can maintain bacterial colony in intestinal tracts balanced, can facilitate elimination of diarrhoea, can stop constipation, has favorable two-way regulation effect on the intestinal tracts, and is good in mouth feel. The water activity of other raw materials in the probiotic solid beverage is controlled to 0.05 or below, and the activity time of probiotics can be prolonged.

The invention discloses a high-effective pleurotus nebrodensis culture medium with algas, which includes the following components, by weight, sugarcane residue, brewer's grain, alginic acid-polyacrylamide composite porous micro-spherical loofah sponge fibers, chlorella powder, sargassum, hydrilla verticillata powder, kelp powder, cyanobacteria powder, algae residue, grateloupia filicina, cellullase, algal polysaccharides, yeast and lactic acid bacteria. The pleurotus nebrodensis culture medium is prepared from the algas, which are rich in nutrients and bio-active substances, as a main material, so that cultivation period of the culture medium is reduced effectively. During the preparation process of the culture medium, the yeast and the lactic acid bacteria are employed to carry out mix-fermentation, thereby enriching fermentation products. The porous substance is used for supporting the fermentation bacteria so that transmission of heat and nutrients are improved and activity time of the fermentation bacteria is increased. The culture medium is increased in decomposition degree of substrates, is improved in abundance and balance of the nutrients and provides fundament to short-period high-effective cultivation of the pleurotus nebrodensis.

The invention discloses a medium-temperature moisturizing yellowing dense hanging rod baking method for middle-upper tobacco leaves. The invention belongs to the technical field of flue-cured tobaccothree-section type dense hanging rod baking processes. The method mainly comprises nine steps of three sections. Medium-temperature moisturizing yellowing is adopted in the main yellowing stage of themiddle-upper tobacco leaves, the temperature difference of dry and wet bulbs is kept to be zero, and baking is carried out for 35-50 h at a steady temperature; when the yellowing degree of the tobacco leaves reaches a state with yellow sheet and green tendons, the temperature is slowly increased for dehumidification, so that the first-class tobacco rate, the orange tobacco rate and the average price of the cured middle-upper tobacco leaves are increased, the chemical component coordination and the sensory evaluation quality of the cured tobacco leaves are improved, the quality of the cured tobacco leaves is improved, profits are increased, and income increase of tobacco growers is achieved.

The invention relates to a biomass coke-based bimetallic catalyst as well as a preparation method and application thereof. The biomass coke-based bimetallic catalyst takes biomass coke as a carrier and is loaded with a nickel-cerium intermetallic compound; wherein metal salts of nickel and cerium can be loaded on the biomass coke through an impregnation method, and the biomass coke is calcined ina nitrogen atmosphere for preparation. Due to the cerium, the surface properties of the catalyst carrier can be improved, and a NiCe-Ni5Ce nickel-rich intermetallic compound system is formed; therefore, the product can effectively inhibit the sintering of nickel, and prolongs the activity time of the catalyst.

The invention discloses a grape planting fertilizer capable of adsorbing microorganisms and a preparation method thereof. The fertilizer is prepared from the following raw materials in parts by weight: natural zeolite, 2mol/L diluted HCl, a 6wt% NaCl solution, biomass charcoal granules, glucose, a microorganism agent, urea, potato residues, fowl dung, a bamboo vinegar liquid, selenium powder, diatomite and a proper amount of water. The requirements for various elements are high in grape planting, the requirements are difficultly met by simple nutrient fertilizer supplying, the amount is difficult to control, the environment is easily polluted, the diseases and insect pests of grape are serious throughout the year, and the problems are well solved by the fertilizer.

The invention discloses a long-acting self-cleaning composition for a glass surface, and aims to provide the long-acting self-cleaning composition for the glass surface, which has the advantages of static resistance, self-cleaning, wide-spectrum reflection reduction, high transmittance, durability and high activity. The technical scheme is as follows: the composition is prepared from the followingsubstances in parts by weight: 0.5 to 5 parts of nano titanium dioxide, 1 to 10 parts of a nano silicon dioxide mixture, 0.1 to 5 parts of inorganic sol, 0.001 to 0.01 part of a conductive agent, 0.01 to 0.1 part of metal salt, 0.01 to 2 parts of a catalyst, 0.01 to 1 part of acid and 80 to 99 parts of a solvent. The invention belongs to the field of glass coatings.

The invention discloses a 7beta-hydroxysteroid dehydrogenase mutant, and belongs to the technical field of biological enzymes. According to the 7 beta-hydroxysteroid dehydrogenase, asparagine at the 115th site of the amino acid sequence of the wild 7 beta-hydroxysteroid dehydrogenase is mutated into valine with stronger nonpolarity, so that the hydrophobicity of the molecular surface is changed, and the thermal stability of the 7 beta-hydroxysteroid dehydrogenase is improved on the premise of not influencing the activity; the method prolongs the activity time of the enzyme in a high-temperature reaction system, avoids the embarrassing situation that the enzyme is high in activity and short in maintenance time at a high temperature and low in activity and long in maintenance time at a low temperature, can effectively solve the problem that the low temperature needs to be controlled by industrial production and is difficult to realize, and is suitable for large-scale industrial production.

The invention discloses an application of lauric acid modified SOD on prevention of chronic radiation skin lesion. A preparation method of the lauric acid modified SOD comprises the following steps that (1) activated lauric acid modifiers are compounded, wherein lauric acid and thionyl chloride are subjected to reaction at 50-140 DEG C, stable returning is performed after at least 80% of lauric acid is converted, and then cut fractions at 124-127 DEG C are collected through reduced pressure distillation, namely the activated lauric acid modifiers; (2) the lauric acid modified SOD is prepared, wherein ox blood SOD is dissolved in a buffer solution to form an SOD solution, the activated lauric acid modifiers are added into the solution, the mixture is stirred and reacts at 30-50 DEG C and then is quenched to stop reaction, and the lauric acid modified SOD product is obtained. The prepared lauric acid modified SOD easily permeates through the skin and cell membranes compared with natural SOD and is long in activity preservation time and good in heat resistance when stored at normal temperature. Compared with the prior art, toxic catalyst pyridine is eliminated, and the lauric acid modified SOD is suitable for being applied on the aspect of prevention of chronic radiation skin lesion and has a better technical effect.

The invention relates to a manufacture method for biology artificial liver biology reactor that includes the following steps: expanding stem cell expanding to 1*10^7 OM, adding into cultivating liquid for suspensoid after assimilating and centrifuging, adding into hollow fiber filterer, and laying into incubator to take continuing expansion and changing inducing type cultivating liquid, the stem cell could have the cell having liver cell function. The invention has stable stem cell resource, and could save cost. It has little immunity source polarity, long time keeping activity, and is benefit for cure.

The invention relates to a method and system for preparing low-carbon olefin from an oxygen-containing compound, and the method comprises the following steps: enabling a mixture containing the oxygen-containing compound and water to sequentially pass through a first reaction zone and a second reaction zone, carrying out cracking reaction under the action of a catalyst, and carrying out gas-liquid separation on a reaction product to obtain the low-carbon olefin, wherein the temperature of the first reaction zone is not higher than that of the second reaction zone. According to the method for preparing the low-carbon olefin from the oxygen-containing compounds, disclosed by the invention, a reaction system is designed according to different optimal catalytic cracking temperatures and conditions of different oxygen-containing compounds, so that the reaction system can be suitable for raw materials containing ketone and aldehyde compounds and having high water content; the raw material conversion rate, the low-carbon olefin selectivity and the catalyst activity time are improved, and the service life of the catalyst is prolonged.