Socio-Political Conditions for the Functioning and Existence of the Russian Media in 2000–2023

В статье проведена попытка оценить уровень свободы российских СМИ по состоянию на начало 2023 г. Также автор выявляет факторы, которые способствуют уменьшению свободы в российских СМИ и выявить темы, которые критикуют власть, но не являются запретными для российской цензуры.The article attempts to assess the level of freedom of the Russian media as of the beginning of 2023. The author also identifies factors that contribute to a decrease in freedom in the Russian media and identify topics that criticize the authorities but are not forbidden by Russian censorship

Form Factors of Composite Systems by Generalized Wigner-Eckart Theorem for Poincar\'e group

The relativistic approach to electroweak properties of two-particle composite systems developed previously is generalized here to the case of nonzero spin. This approach is based on the instant form of relativistic Hamiltonian dynamics. A special mathematical technique is used for the parametrization of matrix elements of electroweak current operators in terms of form factors. The parametrization is a realization of the generalized Wigner--Eckart theorem on the Poincar\'e group, form factors are corresponding reduced matrix elements and they have the sense of distributions (generalized functions). The electroweak current matrix element satisfies the relativistic covariance conditions and in the case of electromagnetic current it also automatically satisfies the conservation law.Comment: Submitted to Theor. Math. Phy

Development of a method for introducing 1-aminophosphonate fragment in a siloxane matrix

© 2016 Taylor & Francis Group, LLC.A versatile synthetic method for the preparation of 1-aminophosphonate derivatives of methylsiloxane oligomers was developed. The introduction of trimethylsilyl amino protecting groups promotes hydrosilylation. The proposed modeling technique allows entering 1-aminophosphonate fragment into the siloxane skeleton of the matrix structure, as well as into the hydrolytically unstable alkoxy-functionalized organosilicon compounds

Synthesis of methyl(1-aminophosphonate)siloxane oligomers

© 2016, Springer Science+Business Media New York.A synthesis of 1-aminophosphonate derivative of methylsiloxane oligomer was developed. A methodology of the introduction of 1-aminophosphonate fragment not only into the stable siloxane structures, but also into hydrolytically unstable alkoxyfunctional organosilicon compounds was suggested

Панель управления транспортным средством технологического назначения на электротяге

The proposed design solution refers to elements of land vehicle bodies and namely to control panels of a power truck and it can be used to control vehicles of technological purpose with electric traction, as well as their hinged and trailed equipment. A technical problem of a device coinciding with the positive result from its application is to provide a possibility for controlling hinged or trailed equipment of a transport vehicle of technological purpose with the help of a panel. The control panel has a steering wheel located on its left side mounted on a steering column, a speedometer and a section of vehicle control devices, and there is a control unit for hinged and trailed equipment of the vehicle in the right part of the panel; it is made in the form of a box and there is a group of indicating devices, keypad and two function keys on the outer box surface. The group of indicating instruments includes a line of seven-segment indicators, a text LCD-indicator, a graphic TFT-display, the first and second LEDs indicating the status of hinged and trailed equipment. Indicating devices, keypad and two function keys are electrically connected to the control unit located inside the box. The control unit is based on an industrial microcontroller equipped with a non-volatile memory unit and a USART module connected via an interface converter unit to a radio module.Предложенное конструкторское решение относится к элементам кузовов наземных транспортных средств, а именно – к панелям управления электрокаром, и может применяться для управления транспортными средствами технологического назначения на электротяге, а также их навесным и прицепным оборудованием. Техническая задача устройства, совпадающая с положительным результатом от его применения, – это обеспечение возможности управления с помощью панели навесным или прицепным оборудованием транспортного средства технологического назначения. Панель управления содержит расположенные в ее левой части руль, установленный на рулевой колонке, спидометр и секцию приборов управления транспортным средством, а в правой части панели размещен узел управления навесным и прицепным оборудованием транспортного средства, выполненный в виде короба, на наружной поверхности которого размещены группа приборов индикации, кнопочная клавиатура и две функциональные клавиши. Группа приборов индикации включает в себя: линейку семисегментных индикаторов, текстовый LCD-индикатор, графический TFT-дисплей, первый и второй светодиоды индикации состояния навесного и прицепного оборудования. Приборы индикации, кнопочная клавиатура и две функциональные клавиши электрически соединены с блоком управления, расположенным внутри короба. Блок управления выполнен на основе промышленного микроконтроллера, снабженного блоком энергонезависимой памяти и модулем USART, подключенным через блок преобразователя интерфейсов к радиомодулю

Synthesis of new organoelement copolymers based on polydimethylsiloxanes and aminophosphonates

© 2018 Based on commercially available 3-Aminopropyl (diethoxy)methylsilane new alkoxysilane with functional aminophosphonate group - diethyl (2-((3-(diethoxy (methyl)silyl)propyl)amino)propan-2-yl)phosphonate were synthesized and characterized. Obtained functional alkoxysilane were transformed to tetrasiloxane in active medium in the presence of acetic acid and then copolymerized with octamethylcyclotetrasiloxane (D4). The chemical structure of the resulting polymer was studied and confirmed by a combination of physical methods, namely,1H,13C,31P and29Si NMR, GPC, and IR spectroscopy. The thermophysical and rheological properties of the polymer were also studied

Новые материалы в оптоэлектронике

For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version). ABSTRACT The current problems of increasing the efficiency of optoelectronic devices with the help of new materials are considered in the article. It is noted that the most promising direction of research is the design of semiconductor materials using the own isotopes of chemical elements. Thus, purification from heavy isotopes increases the speed of optoelectronic devices, quantum efficiency, sensitivity of photodetectors. The greatest effect of isotope purification can be obtained for a nanostructured material (superlattices). This new semiconductor material will create more sensitive instruments for night vision, solar panels, safety systems, medical equipment, ultra-long-range infrared photodetectors. Keywords: optoelectronics, communication, isotopes, purification, quantum efficiency, superlattices.Текст аннотации на англ. языке и полный текст статьи на англ. языке находится в прилагаемом файле ПДФ (англ. версия следует после русской версии). В статье рассмотрены актуальные вопросы повышения эффективности оптоэлектронных устройств на основе новых материалов. Отмечено, что наиболее перспективным направлением исследований является проектирование полупроводниковых материалов с помощью собственных изотопов химических элементов. Так, очистка от тяжёлых изотопов исходных веществ повышает быстродействие оптоэлектронных устройств, квантовую эффективность, чувствительность фотоприёмников. Наибольший эффект от изотопической очистки можно получить для наноструктурированного материала (сверхрешёток). Его применение позволит создать более чувствительные приборы для ночного видения, солнечных батарей, систем обеспечения безопасности, медицинского оборудования, фотоприёмники сверхдлинного инфракрасного диапазона

Control Panel for Transport Vehicle of Technological Purpose with Electric Traction

The proposed design solution refers to elements of land vehicle bodies and namely to control panels of a power truck and it can be used to control vehicles of technological purpose with electric traction, as well as their hinged and trailed equipment. A technical problem of a device coinciding with the positive result from its application is to provide a possibility for controlling hinged or trailed equipment of a transport vehicle of technological purpose with the help of a panel. The control panel has a steering wheel located on its left side mounted on a steering column, a speedometer and a section of vehicle control devices, and there is a control unit for hinged and trailed equipment of the vehicle in the right part of the panel; it is made in the form of a box and there is a group of indicating devices, keypad and two function keys on the outer box surface. The group of indicating instruments includes a line of seven-segment indicators, a text LCD-indicator, a graphic TFT-display, the first and second LEDs indicating the status of hinged and trailed equipment. Indicating devices, keypad and two function keys are electrically connected to the control unit located inside the box. The control unit is based on an industrial microcontroller equipped with a non-volatile memory unit and a USART module connected via an interface converter unit to a radio module

Development of a method for introducing 1-aminophosphonate fragment in a siloxane matrix

© 2016 Taylor & Francis Group, LLC.A versatile synthetic method for the preparation of 1-aminophosphonate derivatives of methylsiloxane oligomers was developed. The introduction of trimethylsilyl amino protecting groups promotes hydrosilylation. The proposed modeling technique allows entering 1-aminophosphonate fragment into the siloxane skeleton of the matrix structure, as well as into the hydrolytically unstable alkoxy-functionalized organosilicon compounds

Synthesis of methyl(1-aminophosphonate)siloxane oligomers

© 2016, Springer Science+Business Media New York.A synthesis of 1-aminophosphonate derivative of methylsiloxane oligomer was developed. A methodology of the introduction of 1-aminophosphonate fragment not only into the stable siloxane structures, but also into hydrolytically unstable alkoxyfunctional organosilicon compounds was suggested