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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 5. Отображено 5.
18-07-2023 дата публикации

Visual detection and recycling method for Au < 3 + >

Номер: CN116448692A
Автор: LIU XIAONAN, LONG DENGYING, HUANG WEI, WANG LONG
Принадлежит:

The invention provides a method for realizing visual detection and recycling of gold ions (Au < 3 + >) by using a plasma molybdenum oxide (HxMO3) nano material. HxMO3 has abundant oxygen vacancies, and the aqueous dispersion is blue. When Au < 3 + > exists, HxMO3 is oxidized, oxygen vacancies are reduced, blue color fades gradually, meanwhile, Au < 3 + > is reduced to form gold nanoparticles, an obvious local surface resonance effect is shown, and red color is generated gradually. The conversion degree of the solution from blue to red depends on the concentration of Au < 3 + >, so that visual qualitative and quantitative analysis of Au < 3 + > is realized. More importantly, the formed gold nanoparticles have good stability and can be applied to the fields of sensing, catalysis, medicine, energy and the like after being purified, and resource utilization is achieved.

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Номер записи: 1
21-07-2023 дата публикации

Hydrogen peroxide detection reagent based on sludge-based carbon nanodots as well as preparation method and application of hydrogen peroxide detection reagent

Номер: CN116465842A
Автор: LIU XIAONAN, WANG LONG, YE YULING, HUANG WEI, PAN ZHICHENG, QIU LIAN, ZHOU QIANG, XING BO, SUN QIHAO
Принадлежит:

The invention discloses a hydrogen peroxide detection reagent based on sludge-based carbon nanodots as well as a preparation method and application thereof, and belongs to the field of analytical chemistry. The sludge-based carbon nanodots provided by the invention are directly prepared by a simple hydrothermal method by taking activated sludge as a carbon source. The carbon nanodot has peroxidase-like activity, can effectively promote hydrogen peroxide to generate hydroxyl radicals with high oxidation activity, and oxidizes ABTS to generate a blue product. The concentration of hydrogen peroxide can be directly quantified by using the color change. According to the method, hydrogen peroxide as low as 0.08 mM can be detected through an ultraviolet-visible spectrophotometer, and existence of hydrogen peroxide as low as 0.1 mM can be judged through color. More importantly, the hydrogen peroxide visual detection reagent provided by the method is prepared from the activated sludge, so that the ...

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Номер записи: 2
29-08-2023 дата публикации

Preparation method and application of magnetic modified three-dimensional flower-shaped N-Bi < 2 > O < 2 > CO < 3 >/g-C3N < 4 > photocatalytic material

Номер: CN116651489A
Автор: HUANG YONG, YE YULING, LIU XIAONAN, XING BO, ZHANG XIAOFANG, HE LINXIN, YOU JUNJIE, ZHOU QIANG, HUANG WEI, GUO DEJIN
Принадлежит:

The invention provides a preparation method and application of a magnetic modified three-dimensional flower-shaped N-Bi2O2CO3/g-C3N4 photocatalytic material, and belongs to the technical field of preparation of inorganic-organic composite nano materials. The preparation method comprises the following steps: S1, preparing a g-C3N4 nanosheet; s2, preparing a three-dimensional flower-shaped N-Bi2O2CO3/g-C3N4 (N-Bi2O2CO3/g-C3N4) photocatalytic material, and S3, preparing a magnetic modified three-dimensional flower-shaped N-Bi2O2CO3/g-C3N4 photocatalytic material: dispersing the three-dimensional flower-shaped N-Bi2O2CO3/g-C3N4 photocatalytic material prepared in S2 into a mixed solution of Fe < 2 + > and Fe < 3 + >, aging under the protection of N2, then adjusting the pH value to 8-9, reacting, and then filtering, washing and drying to obtain the magnetic modified three-dimensional flower-shaped N-Bi2O2CO3/g-C3N4 photocatalytic material. According to the method, a g-C3N4 nanosheet is adopted ...

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Номер записи: 3
02-06-2023 дата публикации

Field detection method for bonding performance of joint caulking elastomer anti-seepage structure

Номер: CN116202952A
Автор: LIU XIAONAN, LI BINGQI, WANG XIAOGANG, LIU YI, LIU YOUZHI
Принадлежит:

The invention discloses an on-site detection method for the bonding performance of a joint caulking elastomer anti-seepage structure. The bonding performance of an elastomer and concrete in on-site construction can be visually detected. Comprising the following steps: (1) cutting: cutting the joint caulking elastomer anti-seepage structure according to the width and length size of w * l, enabling a cut drawing part to be independent from other parts of the joint caulking elastomer anti-seepage structure, and enabling the cut drawing part to serve as a to-be-tested base material; (2) sticking a spindle: cleaning the bottom surface of the detection column and the surface of the to-be-detected base material, sticking the detection column on the surface of the to-be-detected base material by using an adhesive, and performing the next step after drying and fixing; (3) drawing: sleeving the detection column in a sleeve of a drawing instrument, and measuring the drawing strength; and (4) tension ...

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Номер записи: 4
05-05-2023 дата публикации

Environment-friendly fast-curing single-component polyurea material and preparation method thereof

Номер: CN116063911A
Автор: LIU XIAONAN, LI BINGQI, LI ZEYUE, LI ZEYANG
Принадлежит:

The invention provides an environment-friendly fast-curing single-component polyurea material, which is prepared from the following raw materials in parts by mass: 80 to 100 parts of isocyanate semi-prepolymer, 5 to 40 parts of latent curing agent, 3 to 18 parts of water-containing filler, 3 to 15 parts of filling agent and 5 to 15 parts of color paste, and can further comprise auxiliaries, the components are one or more of a dispersing agent, a defoaming agent, a flatting agent, an anti-hydrolysis agent, an anti-yellowing agent and an ultraviolet light absorber. The environment-friendly fast-curing single-component polyurea material provided by the invention is long in storage time and fast in curing time, and the problem that the existing single-component polyurea material cannot be dried when thick coating and caulking are carried out is solved.

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Номер записи: 5