31results about How to "Shorten the delay period" patented technology

The invention discloses a Bacillus amyloliquefaciens strain and application thereof. The strain is Bacillus amyloliquefaciens ZTS-06, and the collection number is CGMCC No.11165. The invention also discloses a live strain preparation containing the strain and a preparation method thereof. The live strain preparation is prepared by the following steps: carrying out amplification culture on the Bacillus amyloliquefaciens ZTS-06, inoculating in a fermentation culture medium, culturing to obtain a fermentation liquid, adding propyl gallate, beta-cyclodextrin and soluble starch, and carrying out spray drying to obtain live strain raw powder; and adding abundant soluble starch, and uniformly mixing to obtain the live strain preparation. The strain has favorable degradation effects on phenylallyl propionic acid, para-hydroxybenzoic acid, cinnamic acid and the like, and can relieve succession cropping obstacles caused by phenolic acid and other toxic substances. The living strain preparation has the advantages of short fermentation period, high fermentation liquid bacterium concentration, low live strain loss in the spray drying process, and high stability in the storage process.

To position an imaging subject (16) in an imaging or therapy system (10), an imaging subject (16) is arranged on a linearly translatable tabletop (26) disposed on a movable trolley (30). A position of a region of interest (24) of the imaging subject along the linearly translatable tabletop is selected using an elongated position selector (40, 40', 40'') that is elongated in a translation direction (z) of the linearly translatable tabletop (26). After the selecting, the movable trolley is docked with the imaging or therapy system (10). After the docking, the tabletop is linearly translated to move the imaging subject to the imaging or therapy system, the amount of linear translating being based on the selected position of a region of interest along the linearly translatable tabletop.

The invention provides a method for producing organic acid at a high production rate through fermentation of intermittent backflow cells, which comprises the following steps of: performing filtration sterilization on a fresh culture medium, introducing into a fermentation tank, and inoculating high-density seed liquor into the fermentation tank; controlling organic acid fermentation production conditions of the used strain, when fermentation is performed until a small amount of sugar residue is in fermentation liquor, discharging partial or all fermentation liquor to a filtering device for processing, simultaneously supplementing a fresh germ-free culture medium into the fermentation tank, returning intercepted strain cell concentrated solution to the fermentation tank to serve as a production strain for later use, wherein the filtered liquor is used for extracting organic acid; and only when the production rate of the organic acid is obviously reduced, not returning the strain cell concentrated solution intercepted by the filtering device is not to the fermentation tank any more, and supplementing new high-density seed liquor and a fresh germ-free fermentation culture medium into the fermentation tank so as to perform a new round of production of organic acid at the high production rate through fermentation of the intermittent backflow cells. Through the method, high biomass and high production rate are always kept in the organic acid fermentation production process, and the method has high industrial application value.

The invention belongs to the technical field of engines, and relates to a lean burn engine and an automobile. The lean burn engine comprises a water spraying system and an electric control unit, wherein the water spraying system comprises air flue water sprayers, pressure sensors and a water supply device; the air flue water sprayers are connected with the water supply device through water pipes;the pressure sensors are used for detecting the pressure values of the water pipes and sending the pressure values to the electric control unit; the air flue water sprayers are arranged on air inlet channels of air cylinders of the engine and spray water to the air inlet channels; the electric control unit is in signal connection with the air flue water sprayers and the pressure sensors; and whenthe engine is in different work conditions, the pressure values of the water pipes change, the pressure sensors send corresponding signals to the electric control unit according to the different pressure values of the water pipes, and the electric control unit controls the air flue water sprayers to adjust the water spraying amount. According to the lean burn engine, the electric control unit controls the air flue water sprayers to adjust the water spraying amount according to different engine work conditions (loads), and efficient clean combustion of the engine is achieved.

The invention belongs to the technical field of liquid submerged fermentation of edible fungi and particularly relates to a supplementary culture medium for shiitake mushroom fermentation and a liquid submerged continuous culture method for shiitake mushrooms. The supplementary culture medium is prepared from, by weight, 4-6% of glucose, 0.5-1% of polypeptone, 0.5-1% of yeast extract powder, 0.1-0.3% of monopotassium phosphate, 0.05-0.15% of magnesium sulfate, 0.05-0.15% of calcium chloride, 0.3-0.5% of soybean oil, 0.01-0.03% of tween 80, 0.05-0.15% of acetic acid and 91-93% of water. The supplementary culture medium is comprehensive and balanced in nutrition and capable of effectively prolonging an exponential growth phase of the shiitake mushrooms, improving liquid submerged culture efficacy of the shiitake mushrooms and increasing biomass and lentinan yield when being used for liquid submerged continuous culture of the shiitake mushrooms.

The invention discloses a method of producing nicotinamide through microorganism catalysis. According to a synergistic effect theory, a novel binary composite nitrile hydratase is disclosed, wherein the composite nitrile hydratase is produced through combined cultivation of bacillus pallidus and rhodococcus. The microorganism nitrile hydratase, which is characterized by being high in stereoselectivity, regioselectivity and being resistant to substrates and products in high concentration, is obtained by means of high substrate specificity and thermostability of the bacillus pallidus and a strong promoter effect of the rhodococcus. Meanwhile, by means of introduction of a co-solvent at a certain concentration to the reaction system, the reaction is accelerated. The method is simple and high-efficient, is environment-friendly, can reach not less than 99% in both purity and yield of the product and is suitable for large-scale industrial production.

The invention discloses saline-alkaline-tolerant Bacillus aerius and a preparation method and application of a living bacteria preparation of the saline-alkaline-tolerant Bacillus aerius. According tothe invention, the saline-alkaline tolerant Bacillus aerius PAPM-14 is separated from rhizosphere soil of corn. The strain is preserved in China General Microbiological Culture Collection Center on June 22, 2020, and the preservation number of the strain is CGMCC No. 20118. The strain has strong salt and alkali tolerance; the strain has strong IAA production, phosphate solubilization and potassium solubilization capabilities, has a strong antagonistic effect on pathogenic bacteria such as corn sheath blight disease, can be used for producing microbial fertilizers, especially microbial fertilizers special for saline-alkali soil corn, is used for biological prevention and control of crop diseases such as corn sheath blight disease, reduces the occurrence of diseases, and improves the yieldand quality.

The invention discloses streptomyces silaceus PAPM 18 which is already collected at the China General Microbiological Culture Collection Center on July 4, 2018 under a biological collection number ofCGMCC NO. 16054. The strain can survive in saline-alkaline soil, has good degrading effect on plant autotoxins like allyl propionate, p-hydroxybenzoic acid and ferulic acid, can relieve successive cropping obstacle caused by the plant autotoxins and has effects of promoting growth of and increasing yield of cotton cultivated in saline-alkaline land. An active bacterial preparation can be obtainedby performing enlarged culture on the strain, inoculating the strain into a culture medium taking corn starch and corn paste as main nutrition sources, culturing at 35-37 DEG C for 72-96h, adding trehalose, molasses and biological fulvic acid powder into fermentation liquid and spray-drying. A preparation method of the active bacterial preparation is scientific, short in fermentation, high in fermentation liquid bacteria concentration, low in active bacteria loss in the process of spray-drying and high in stability of the active bacteria preparation in the process of preservation.

The invention provides a culture medium with composite trace elements and capable of promoting proliferation of paenibacillus polymyxa and an application method of the culture medium, and provides appropriate concentration of the composite trace elements in the culture medium and a specific application method of the culture medium. The proliferation biomass of the paenibacillus polymyxa can be increased, the proliferation delaying phase of the paenibacillus polymyxa can be shortened, and the logarithmic phase of the proliferation can be advanced. The culture medium disclosed by the invention has important theoretical significance in high-efficiency culture of the paenibacillus polymyxa, and has high popularization value in the application of relevant biological microbial agents.

The invention provides Mn2+ ion for promoting the proliferation of paenibacillus polymyxa and the application method thereof. An adopted culture medium is formed by adding Mn2+ into a PDB culture medium till the concentration is 50mg/L, and is equal to MnSO4.H2O with the final concentration of 153.75mg/L. The Mn2+ ion can improve the proliferation biomass of paenibacillus polymyxa, shorten the proliferation lag phase of paenibacillus polymyxa, and ensure that the log phase of proliferation is in advance. The Mn2+ ion has an important theoretical significance on high efficient culture of paenibacillus polymyxa, and has a wide promotion value for the application of relevant biological bacterium agents.

The invention provides a method for promoting proliferation of paenibacillus polymyxa through Zn2+ ions and an application method of paenibacillus polymyxa. According to the method, a culture medium is prepared in the mode that Zn2+ is added to a PDB culture medium until the final concentration of the PDB culture medium is 100 mg/L, and the culture medium is equivalent to ZnSO4.7H2O with the concentration of 439.75 mg/L. According to the method, the biomass of proliferation of paenibacillus polymyxa can be increased, the delay period of proliferation of paenibacillus polymyxa is shortened, andthe logarithmic phase of proliferation is shortened. The method has important theoretical significance on efficient culture of paenibacillus polymyxa and has high popularization value on applicationof related antibiological inoculants.

The invention relates to a pond substrate modifier, which is prepared from the following ingredients in parts by mass: 10 to 15 parts of zeolite powder, 30 to 55 parts of sodium humate, 10 to 20 parts of compound bacterium powder, 5 to 10 parts of compound enzyme, 10 to 20 parts of hydroxypropyl starch, 5 to 10 parts of protective agents and 5 to 15 parts of stabilizing agents, wherein the compound bacterial powder comprises bacillus subtilis bacterial powder, bacillus licheniformis bacterial powder, paracoccus denitrificans bacterial powder and thiobacillus denitrificans bacterial powder; and the pond substrate modifier has a double-layer structure. The invention further relates to a preparation method of the pond sediment modifier and application of the pond sediment modifier in the field of aquaculture. The pond sediment modifier can decompose organic matters at the bottom of a pond, reduce the content of ammonia nitrogen, nitrite and sulfide, and improve the transparency of a water body at the same time.

The invention relates to a culture medium for the liquid fermentation of edible and medicinal fungi. The culture medium comprises KH2PO4, MgSO4, sucrose, peptone and corn residue, wherein the corn residue is replaced by one of rice bran, sorghum flour, wheat grains and wheat bran. The obtained culture medium has low cost and high economic value.