Eurasian Physical Technical Journal最新文献_第6页

SPIN-SELECTIVE INTERACTION OF TRIPLET-EXCITED MOLECULES ON THE SURFACE OF A FERROMAGNETIC NANOPARTICLE 铁磁纳米粒子表面三重态激发分子的自旋选择性相互作用

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/5-16

M. Kucherenko

引用次数: 0

DEVELOPMENT OF ONBOARD CONTROL SYSTEM ARCHITECTURE FOR NANOSATELLITES 纳米卫星机载控制系统体系结构的研制

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/58-66

K. Alipbayev

引用次数: 0

TRANSIENT ABSORPTION OF GOLD NANOPARTICLES OF VARIOUS DIAMETERS 不同直径金纳米粒子的瞬态吸收

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/73-77

N. Ibrayev

引用次数: 0

AUTOMATED MEASURING SYSTEM FOR INVESTIGATING TEMPERATURE DEPENDENCE OF LOW-FREQUENCY NOISE SPECTRA IN ELECTRONIC ELEMENTS AND STRUCTURES 用于研究电子元件和结构低频噪声谱温度相关性的自动测量系统

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/51-57

A. Ermachikhin

引用次数: 0

INVESTIGATION OF THE STRESS STATE OF MINE WORKINGS USING METHODS OF DEFORMABLE SOLID MECHANICS 用变形固体力学方法研究矿山巷道的应力状态

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/68-72

G. Shaikhova

{"title":"INVESTIGATION OF THE STRESS STATE OF MINE WORKINGS USING METHODS OF DEFORMABLE SOLID MECHANICS","authors":"G. Shaikhova","doi":"10.31489/2022no4/68-72","DOIUrl":"https://doi.org/10.31489/2022no4/68-72","url":null,"abstract":"The assessment of the reliability of a mining and technological scheme, taking into account the stress state of mine workings, depends on a combination of mining and geological, technical and technological factors. The article demonstrates the creation of a model of a rock mass and a scheme for calculating the stress state based on modern methods of mechanics of a deformable solid body.The object of study is a single mine working of great length, passed through the rock parallel to the strike of the coal seam (field drift) and located in the zone of influence of the support pressure. Due to the fact that the field drift is laid in the soil of the formation, which is a layered stratum in the zone of influence of clearing operations, the predominant load is the bearing pressure on the formation. The areas of application of the methods of complex potentials of integral equations and their combinations in solving applied problems are determined. The data of mine (field) measurements and observations, laboratory experiments and their generalizations are taken into account both when setting tasks and assigning boundary conditions, and when checking the results obtained. The mixed problem of the theory of elasticity about the contact stress on half-strips with varying along the longitudinal axis was solved; moving away from the ends, deformative properties, when these half-strips are clamped with friction between the layered half-planes.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46002403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CARBON FOOTPRINT COMPARATIVE ANALYSIS FOR EXISTING AND PROMISING THERMAL POWER PLANTS 现有和有前景的火力发电厂碳足迹比较分析

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/34-43

N. Rogalev

{"title":"CARBON FOOTPRINT COMPARATIVE ANALYSIS FOR EXISTING AND PROMISING THERMAL POWER PLANTS","authors":"N. Rogalev","doi":"10.31489/2022no4/34-43","DOIUrl":"https://doi.org/10.31489/2022no4/34-43","url":null,"abstract":"The power production industry is the main greenhouse gas emitter that makes its contribution to global warming. The greenhouse gas emission takes place in fuel production, transportation, and combustion. A prospective method for emission mitigation is the transition to organic fuel-burning facilities with small emissions by capturing carbon dioxide. Power consumption on the carbon dioxide capture remarkably reduces the efficiency of these facilities, which leads to increasing of fuel consumption and greenhouse gas emission because of the larger fuel production and transportation. Based on the material balance method, taking into account system effect of changes in efficiency and amount of fuel consumed, the paper estimated the carbon footprint over a twenty-year lifecycle for following thermal power plants types: combined cycle and oxy-fuel combustion plants for both natural gas and coal with internal gasification. It is shown that the transition to oxygen-fuel plants can reduce the carbon footprint near 90% for natural gas and near 75% for coal. The study also demonstrates the positive effect of carbon capture and storage system implementation for reducing carbon footprint near 75% for natural gas and near 70% for coal.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48545714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

INFLUENCE OF IONIZING RADIATION ON THE DIFFUSE REFLECTION SPECTRA OF STEATITE CERAMICS SNC 电离辐射对滑石陶瓷SNC漫反射光谱的影响

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/22-27

M. Ashurov

引用次数: 0

TESTING OF DIFFERENT MATERIAL TYPE PHOTOELECTRIC BATTERY AND PHOTOTHERMAL BATTERIES COMPOSED 测试不同材料类型的光电电池和光热电池组成

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/44-50

M. Tursunov

{"title":"TESTING OF DIFFERENT MATERIAL TYPE PHOTOELECTRIC BATTERY AND PHOTOTHERMAL BATTERIES COMPOSED","authors":"M. Tursunov","doi":"10.31489/2022no4/44-50","DOIUrl":"https://doi.org/10.31489/2022no4/44-50","url":null,"abstract":"In the world, over the years, the use of hydrocarbon resources is decreasing, and their place is being replaced by ecologically clean alternative and renewable energy sources. Therefore, the world is paying a lot of attention to improved devices based on photoelectric batteries. Conducting targeted scientific research in this direction is one of the urgent issues of the present time. This article presents the results of comparing the electrical parameters of photovoltaic and photothermal batteries based on them in natural conditions. The experiments were carried out on three traditional photoelectric batteries with different materials and constructions, as well as photothermal batteries made on their basis. All batteries are installed in a mobile structure, and two planes (reflectors) that reflect sunlight are installed along the long side of the device connecting the batteries. In the same conditions, the intensity of solar radiation is increased with the help of reflectors that return light to photoelectric and photothermal batteries. On the front surface of the photovoltaic batteries, a vertical (90) fall of the sun's rays is provided. As a result, their electrical parameters changed to different values depending on the type of material and construction. Compared to traditional photoelectric batteries, photothermal batteries produced 1.3-1.4 times more electricity depending on the type of material. In the results of the experiment, data were obtained on the open circuit voltage, short circuit current and power of photoelectric and photothermal batteries in hot climate conditions. According to results, the high indicators in terms of electrical parameters are monocrystalline photoelectric and photothermal batteries based on them.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43752600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EFFECT OF ANODIZING VOLTAGE ON THE PHOTOCATALYTIC ACTIVITY OF FILMS FORMED BY TITANIUM DIOXIDE NANOTUBES 阳极氧化电压对二氧化钛纳米管薄膜光催化活性的影响

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/28-33

T. Serikov

{"title":"EFFECT OF ANODIZING VOLTAGE ON THE PHOTOCATALYTIC ACTIVITY OF FILMS FORMED BY TITANIUM DIOXIDE NANOTUBES","authors":"T. Serikov","doi":"10.31489/2022no4/28-33","DOIUrl":"https://doi.org/10.31489/2022no4/28-33","url":null,"abstract":"The influence of the anodizing voltage during synthesis on the specific surface area and on the photocatalytic activity of the TiO2 nanotube was studied. Films formed by titanium dioxide nanotubes were obtained on the surface of titanium foil by electrochemical anodizing. It has been found that an increase in the anodizing voltage from 20 V to 60 V leads to an increase in the inner and outer diameters of nanotubes, an increase in the growth rate and the interpore distance of nanotubes. The photocatalytic activity of the samples was evaluated by measuring the magnitude of the photoinduced current. The film produced at low voltage generated a current 3.5 times higher than the film produced at high voltage, and the degradation of the dye in the presence of the films was 75 and 38%, respectively, over the same period of time. An increase in the photocatalytic activity of the films is mainly associated with an increase in the specific surface area of the nanotubes. Thus, the values of the specific surface area of TiO2 nanotubes were determined by the method of low-temperature nitrogen adsorption. It has been established that with an increase in the anodizing voltage, the specific surface area of the films decreases.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47873987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EFFECT OF HIGH-PRESSURE TORSION ON MICROSTRUCTURE CHANGES IN MICROALLOYED STEEL 高压扭转对微合金钢组织变化的影响

Eurasian Physical Technical Journal Pub Date : 2022-12-26 DOI: 10.31489/2022no4/17-21

I. Volokitina

{"title":"EFFECT OF HIGH-PRESSURE TORSION ON MICROSTRUCTURE CHANGES IN MICROALLOYED STEEL","authors":"I. Volokitina","doi":"10.31489/2022no4/17-21","DOIUrl":"https://doi.org/10.31489/2022no4/17-21","url":null,"abstract":"Тhe most common method of manufacturing parts is metal pressure treatment, as a result of which the entire reserve of strength and ductility of the material is not exhausted. Therefore, the issues of the influence of plastic deformation on the cyclic durability and endurance limits of steel rings are relevant. In this article experimental studies of the effect of high pressure torsion in a die of new design on the evolution of the microstructure and the change of mechanical properties have been carried out. As a result, the fundamental possibility and efficiency of using the proposed method for the formation of ultrafine grained structure and increasing the strength properties of steel rings has been proved. Strain was carried out at ambient temperature in six passes. The strain resulted in an ultrafine-grained structure with an average grain size of 0.5 μm and a great number of large-angle boundaries. The strength properties of microalloyed steel increased almost threefold compared to the initial state, the microhardness also increased threefold, i.e. increased from 760 MPa in the initial state to 1935 MPa after strain. The greatest increase in strength properties occurred in the first 3 cycles of strain.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46607436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0