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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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Применить Всего найдено 3. Отображено 3.
08-08-2023 дата публикации

Method and device for concentrating and reducing salt-containing wastewater

Номер: CN116553784A
Автор: YAN JINLONG, LI YAN, LI JUN, WU YAWEN
Принадлежит:

The invention belongs to the technical field of salt-containing wastewater treatment, and discloses a salt-containing wastewater concentration reduction method, which comprises a first-stage reverse osmosis desalination system, a second-stage reverse osmosis desalination system, a third-stage reverse osmosis desalination system, an impurity purification system, a temperature control system, a low desalination membrane concentration system and a concentration evaporation system, the process is characterized by comprising the following steps: A, conveying salt-containing wastewater to a first-stage reverse osmosis desalination system, and carrying out desalination treatment by adopting a high-desalination reverse osmosis membrane to obtain first-stage concentrated water and first-stage produced water; the first-stage produced water can be directly recycled and can also be recycled after being desalted in a third-stage reverse osmosis desalination system. According to the invention, waste ...

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Номер записи: 1
25-04-2023 дата публикации

Indole-benzimidazole derivative fluorescent probe as well as preparation method and application thereof

Номер: CN116003390A
Автор: YAN JINLONG, WU YAWEN, LI YAN
Принадлежит:

The invention provides an indole-benzimidazole derivative fluorescent probe as well as a preparation method and application thereof. The structural formula of the fluorescent probe is shown in the specification, the preparation method comprises the following steps: dissolving indole-7-formaldehyde, o-phenylenediamine and sodium thiosulfate in DMF (Dimethyl Formamide), refluxing and stirring at 100 DEG C for 7-12 hours, cooling to room temperature after the reaction is completed, diluting with ethyl acetate, drying and washing to obtain the indole-benzimidazole derivative fluorescent probe. The indole-benzimidazole derivative fluorescent probe disclosed by the invention can selectively act with phosgene in a water-rich system (containing acetonitrile with a volume fraction of 0.5%), the solution is changed from purple to light blue under a 254 nm ultraviolet lamp, and the blue fluorescence of the solution is gradually enhanced under a 365 nm ultraviolet lamp; meanwhile, the fluorescent probe ...

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Номер записи: 2
05-05-2023 дата публикации

Benzothiazole derivative fluorescent probe as well as preparation method and application thereof

Номер: CN116063301A
Автор: YAN JINLONG, WU YAWEN, LI YAN
Принадлежит:

The invention provides a benzothiazole derivative fluorescent probe as well as a preparation method and application thereof. The chemical structural formula of a benzothiazole derivative HBT-P-T is shown in the specification, wherein X is I or Cl. The benzothiazole derivative fluorescent probe HBT-P-T disclosed by the invention can selectively act with hydrogen sulfide and hydrazine hydrate in a PBS: DMSO (v: v, 8: 2) solution. When the probe acts with hydrogen sulfide, the two-channel fluorescence of 485 nm (415 nm excitation) and 590 nm (475 nm excitation) is obviously enhanced; when the probe acts with hydrazine hydrate, the fluorescence at only 510 nm (415 nm excitation) is obviously enhanced, and particularly, the probe has a wide application prospect in a biological system as a fluorescent probe.

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Номер записи: 3