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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 10. Отображено 10.
14-01-2015 дата публикации

Biological agent capable of lowering ammonia nitrogen in intensive culture pond as well as preparation method and using method of biological agent

Номер: CN104276671A
Принадлежит:

The invention discloses a biological agent capable of lowering ammonia nitrogen in an intensive culture pond as well as a preparation method and a using method of the biological agent, belonging to the field of biological agents. The biological agent is prepared from the following raw materials in parts by weight: 5-15 parts of a fungicide, 30-40 parts of a long-acting carbon source and 30-40 parts of a quick-acting carbon source. The biological agent disclosed by the invention has the beneficial effect that the problem in the existing aquaculture that ammonia nitrogen is relatively high and cannot be lowered by virtue of an effective biological method is solved. After being used for a long time, the biological agent disclosed by the invention can be used for acclimating and directionally culturing heterotrophic microbes in water to achieve effects of stabilizing a breeding ecological system, lowering ammonia nitrogen, stabilizing water quality and improving the self-cleaning capacity of ...

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20-05-2009 дата публикации

Grass carp intestinal cell cytoplasm malic dehydrogenase gene sequence

Номер: CN0101434961A
Принадлежит:

The invention discloses a cytoplasmic malic acid dehydrogenase gene of grass carp intestinal cells, designs a primer with a cytoplasmic malic acid dehydrogenase EST sequence that is stored in a grass carp intestinal cDNA library in the laboratory as a template, combines the RACE technique, and uses the PCR method for clone augmentation, thus obtaining an entire expressed sequence of the cytoplasmic malic acid dehydrogenase gene of grass carp intestinal cells. The gene provides important theoretical foundation for researching the structural composition of the cytoplasmic malic acid dehydrogenase gene of grass carp intestinal cells, investigating the action and the functional region position of the cytoplasmic malic acid dehydrogenase gene of grass carp intestinal cells in grass carp intestinal metabolic control and distinguishing from other species. The gene plays a pioneering role in discovering and building the connection between grass carp genome plan and functional feeding stuff industrialization ...

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11-08-2023 дата публикации

Preparation method of lithium alkylide

Номер: CN116574114A
Принадлежит:

The invention discloses a preparation method of lithium alkylide in the technical field of lithium alkylide preparation, and the preparation method of lithium alkylide comprises the following steps: S1, under the protection of inert gas, putting metal lithium particles and a solvent into a washing kettle, stirring and washing the metal lithium particles, and removing a protective oil layer of the metal lithium particles; s2, taking out the washed metal lithium particles, putting the metal lithium particles into a synthesis kettle under the protection of inert gas, heating, and maintaining for a certain time to ensure that the metal lithium particles are molten into a liquid state; s3, a hydrocarbon solvent is put into the synthesis kettle, and the hydrocarbon solvent and the metal lithium liquid are stirred, mixed and synthesized; s4, after the synthetic reaction is completed, the materials are pressed into a settling tank through argon, standing is conducted, and after lithium slag in ...

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21-07-2023 дата публикации

Process method for preparing battery-grade lithium carbonate by recovering lithium chloride from organic reaction wastewater

Номер: CN116462212A
Принадлежит:

The invention belongs to the technical field of lithium carbonate preparation, and particularly relates to a process method for recovering lithium chloride from organic reaction wastewater to prepare battery-grade lithium carbonate, which comprises the steps of extracting lithium chloride from organic reaction wastewater and preparing the obtained industrial-grade lithium chloride into lithium carbonate. The preparation method comprises the following steps: adding lithium chloride into absolute ethyl alcohol, stirring at a constant temperature until the lithium chloride is completely dissolved to obtain a lithium chloride ethanol solution, adding a sodium hydroxide ethanol solution into the lithium chloride ethanol solution, carrying out ultrasonic reaction to obtain a suspended ethanol solution, carrying out reduced pressure distillation reaction, cooling and filtering to obtain a mixed precipitate, heating distilled water, slowly adding the distilled water into the mixed precipitate, ...

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08-07-2009 дата публикации

Gene sequence of grass carp's intestinal tissue adenylosuccinate lyase

Номер: CN0101475953A
Принадлежит:

The invention discloses grass carp intestinal tissue adenylosuccinate lyase genes. Partial sequence of the grass carp intestinal tissue adenylosuccinate lyase genes is obtained through large-scale EST sequencing, a primer is designed based on the sequence, and then the primer is cloned onto the whole expression sequence of the grass carp intestinal tissue adenylosuccinate lyase genes by applying the RT-PCR technique and RACE technique. The invention investigates the gene structural constitution of the adenylosuccinate lyase gene in the grass carp, researches the function region location for exerting the catalyze capability and the distinction of the grass carp from other animals, thereby providing important theory basis for investigating the applications of its recombinant protein in the production.

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08-12-2010 дата публикации

Leukocyte chemoattractant gene sequence 2 of grass carp

Номер: CN0101906421A
Принадлежит:

The invention discloses leukocyte chemoattractant genes 2 of a grass carp. By using an EST (Expressed Sequence Tag) sequence of the leukocyte chemoattractant genes 2 in a grass carp intestinal tract cDNA (complementary DNA) library saved in a laboratory as a template design primer and combining with an RACE (Rapid-Amplification of cDNA Ends) technique, the full expression sequence of the leukocyte chemoattractant genes 2 in grass carp intestinal tract cells is obtained by amplification and cloning in a PCR (Polymerase Chain Reaction) method. The invention provides important theoretical basis for the research on the structural composition of the leukocyte chemoattractant genes 2 of the grass carp, the discussion on the action and the functional zone position of the leukocyte chemoattractant genes 2 in the disease resistance of the grass carp and the difference from other species. The invention has a pioneering action on a method for exploring and establishing a link between grass carp genome ...

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08-08-2023 дата публикации

Method for preparing metal lithium through electrolysis

Номер: CN116555833A
Принадлежит:

The invention discloses a method for preparing metal lithium through electrolysis in the technical field of metal lithium extraction, and the method for preparing metal lithium through electrolysis comprises the following steps: S1, preparing equipment which comprises an electrolytic tank, an anode current collector, a cathode current collector and a conductor diaphragm; s2, the lithium-containing aqueous solution and the electrolyte are placed in an electrolytic tank together, the anode current collector and the cathode current collector are connected with a direct-current power source, according to the method for preparing the metal lithium through electrolysis, the direct-current power source is connected to the anode current collector and the cathode current collector, seawater is electrolyzed through the anode current collector and the cathode current collector, and the metal lithium is prepared. Lithium ions are driven to move towards the conductor diaphragm through electron transfer ...

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28-01-2015 дата публикации

Low-cost tilapia breeding method combining feed and bio floc technology

Номер: CN104304118A
Принадлежит:

The invention discloses a low-cost tilapia breeding method combining the feed and the bio floc technology and belongs to the field of tilapia breeding methods. The method includes 1, feeding low nitrogen and high carbon feed until the satiating purpose is achieved; 2, regularly adding bio floc into a breeding pond to obtain products so as to adjust the water of the breeding pond until C/N >/= 10; 3, turning on an aerator facility in the breeding process, and guaranteeing the ratio of dissolved oxygen being larger than 3mg / L. The amount of the bio floc in the breeding water is increased in two manners, the feed protein recycling is prompted, the feed coefficient is decreased, the breeding cost is reduced, and breeding benefits are increased.

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19-01-2011 дата публикации

Grass carp thymosin extrasin beta11 gene sequence

Номер: CN0101948843A
Принадлежит:

The invention discloses a grass carp thymosin extrasin beta11 gene sequence. A full expression sequence of a grass carp thymosin extrasin beta11 gene is obtained with a PCR (Polymerase Chain Reaction) method by designing primers with a thymosin extrasin beta11 EST sequence of a grass carp intestinal tract cDNA library preserved in the local laboratory used as a template, and combining with a RACE (Rapid Amplification of cDNA Ends) technology. The invention provides important theoretical basis for researching the structural constitution of the grass carp thymosin extrasin beta11 gene, and probing into the function of the grass carp thymosin extrasin beta11 gene in the disease resistant mechanism of grass carps, the position of the grass carp thymosin extrasin beta11 gene in a functional area, and the difference with other species, and plays a pathbreaking role of exploration on establishing a bond between a grass carp genome project and a research on the grass carp disease resistant mechanism ...

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05-03-2014 дата публикации

Preparation for promoting phosphorous release of bottom sludge of aquaculture pond, and preparation method and application of preparation

Номер: CN103613258A
Принадлежит:

The invention discloses a composite microbial preparation for promoting the phosphorous release of bottom sludge of an aquaculture pond, and a preparation method and a using method of the composite microbial preparation, and belongs to the field of microbial preparations. The composite microbial preparation consists of the following components in parts by weight: 30 to 60 parts of phosphate-solubilizing bacillus, 20 to 50 parts of phytase and 5 to 25 parts of sodium humate. Compared with the prior art, the composite microbial preparation, and the preparation method and the using method thereof have the beneficial effects that due to the use of the composite microbial preparation, deposited phosphorous of the bottom sludge of the aquaculture pond can be recycled and released for phytoplankton, the fertility of a water body can be improved, the problems of reutilization of the deposited phosphorous of the bottom sludge of the pond are solved, and meanwhile, the water quality and the sediment ...

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