Deformation dynamics of the solid structural unit from an external action

In this work we present the model for study the solid deformation dynamics based on the structural unit method. The solution results of some model equations are given. Time dependence of the sections relative displacement of a structural unit during the uniaxial longitudinal deformation is graphically represented. При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/9273У роботі представлено модель для дослідження динаміки деформації твердого тіла на базі методу структурних одиниць. Наведено результати розв’язання деяких рівнянь моделі. Графічно представлено залежність відносного зміщення структурної одиниці від часу у процесі одновісної прокольної деформації. При цитировании документа, используйте ссылку http://essuir.sumdu.edu.ua/handle/123456789/9273В работе представлена модель для исследования динамики деформации твердого тела на базе метода структурных единиц. Приведены результаты решения некоторых уравнений модели. Графически представлена временная зависимость относительного смещения сечений структурной единицы в процессе одноосной продольной деформации. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/927

Microprocessor electronics in space instrument making

Volumes of information processed on board the spacecraft (SC) is constantly growing, the algorithms of the onboard systems - complicated. Therefore, a need for new solutions in the field of system architecture SC. Operating conditions are very complex spacecraft: overload when starting, temperature, radiation, and other negative factors of outer space , as well as the inability to repair a running companion , require onboard equipment reliability and survivability. Architecture used today onboard control systems and data do not satisfy in full all these requirements. Need a new concept of architecture - board information and control systems of spacecraft, which provides high functionality and reliability of such systems.Volumes of information processed on board the spacecraft (SC) is constantly growing, the algorithms of the onboard systems - complicated. Therefore, a need for new solutions in the field of system architecture SC. Operating conditions are very complex spacecraft: overload when starting, temperature, radiation, and other negative factors of outer space , as well as the inability to repair a running companion , require onboard equipment reliability and survivability. Architecture used today onboard control systems and data do not satisfy in full all these requirements. Need a new concept of architecture - board information and control systems of spacecraft, which provides high functionality and reliability of such systems

Monitoring-based analysis of agriculture in Iraq

The paper deals with change in area and structure of Iraq agricultural lands. It revealed the main reasons for the change: crisis (war, sanctions, etc.); economic (swamp and lake drainage, melioration, etc.); weather condition. Land-use intensification as a reason for reduction of agricultural land areas was not proved. The area of cultivated lands proved to correlate significantly with the level of precipitation, wheat productivity -with the average temperature in Iraq

First study of radiation hardness of lead tungstate crystals at low temperatures

The electromagnetic calorimeter of PANDA at the FAIR facility will rely on an operation of lead tungstate (PWO) scintillation crystals at temperatures near -25 deg.C to provide sufficient resolution for photons in the energy range from 8 GeV down to 10 MeV. Radiation hardness of PWO crystals was studied at the IHEP (Protvino) irradiation facility in the temperature range from room temperature down to -25 deg.C. These studies have indicated a significantly different behaviour in the time evolution of the damaging processes well below room temperature. Different signal loss levels at the same dose rate, but at different temperatures were observed. The effect of a deep suppression of the crystal recovery process at temperatures below 0 deg.C has been seen.Comment: 10 pages 7 figure

Design of the Model of Ratiometric Polymer Nanobiothermometer Based on Quantum Dots

To solve many modern biological and biotechnological tasks it is necessary to realize strictly control and regulation of temperature of the cells and their organelles. Thi stasks include control of various exo- and endothermic reactions, monitoring of tissues‘ and individual cell‘s temperature in in vitro researches and in vivo procedures such as the hyperthermia procedure that used for cancer treatment. The today known methods of measuring and controlling of temperature at the cellular level can not provide the necessary level of locality and accuracy due to too big size and heightened sensitivity to external factors. The real alternative of existing today methods is nanoscale temperature biosensor operating on a ratiometric principle and based on the composite structure from polymers and colloidal quantum dots. In this paper we present a working model and plan of investigation of ratiometric nanoscale polymer nanobiothermometer based on quantum dots. Keywords: thermosensors, quantum dots, local temperature, polymers, temperature measuremen

The possibility of distance methods application for snow dump sites monitoring

In this article the results of remote sensing of the Earth for monitoring of four snow dump sites in Tomsk are described. Their compliance with permitted type of the territory use was evaluated. Earlier unknown time of the operation start was identified. The spatial-temporal variability of areas was defined. The temperature profiles of snow dump and background sites were analyzed. Use of remote sensing data allowed easy identification of snow dump sites creation time. The fact that the sites are located out of zones of permitted type of the territory use was revealed, that is violation of the law. For the first time the cartographic material was collected and showed that in the recent years their areas increased in average in 18%. The fore-cast for the nearest years was made. The article contains satellite images indicting the degradation of soil-vegetative cover of snow dumps. The reasons are contamination and overcooling of the soil in the beginning of vegetation period. The research results became the initial material for perfection of snow dumps territories management and will be applied in the work of environmental protecting service. Approaches proposed by authors may be used in solving similar problems in any region

The possibility of distance methods application for snow dump sites monitoring

In this article the results of remote sensing of the Earth for monitoring of four snow dump sites in Tomsk are described. Their compliance with permitted type of the territory use was evaluated. Earlier unknown time of the operation start was identified. The spatial-temporal variability of areas was defined. The temperature profiles of snow dump and background sites were analyzed. Use of remote sensing data allowed easy identification of snow dump sites creation time. The fact that the sites are located out of zones of permitted type of the territory use was revealed, that is violation of the law. For the first time the cartographic material was collected and showed that in the recent years their areas increased in average in 18%. The fore-cast for the nearest years was made. The article contains satellite images indicting the degradation of soil-vegetative cover of snow dumps. The reasons are contamination and overcooling of the soil in the beginning of vegetation period. The research results became the initial material for perfection of snow dumps territories management and will be applied in the work of environmental protecting service. Approaches proposed by authors may be used in solving similar problems in any region

Correlative Microscopy: A Potent Tool for Biomedicine

The correlative microscopy method based on a combination of optical and electronic techniques that is increasingly widely used now, has a number of limitations. Here, an alternative approach is considered that uses scanning probe microscopy (SPM) technique to get high-resolution and ultra-high-resolution data. SPM greatly increases the possibilities of collecting new information (on topological, morphological, electrical, magnetic etc. properties). To obtain three-dimensional distributions of different parameters of the sample, ultramicrotomography is used, which allows to scan the sample in steps of up to 20 nm. The principal advantage of the approach is that spectral data are used which due to the combination in near field microscopy can be gained with high and ultrahigh resolution. All above mentioned features are implemented in a single instrument, which allows to have 3-D data and their distributions at the same instrumental platform. A special feature of the approach is the possibility to use all the power of micro(nano)spectral methods. Therefore, it would be more correct to name the proposed approach ”Correlative microspectroscopy”. Keywords: correlative microscopy, correlative microspectroscopy, scanning near-ielf optical microscopy, ultramicrotomography, Raman, TER