Physical Sciences and Technology最新文献_第6页

Obtaining of aluminum nano-powders by thermal treatment 热处理法制备纳米铝粉

Physical Sciences and Technology Pub Date : 2019-07-30 DOI: 10.26577/phst-2019-1-p8

G. Paskalov, Usa Plasma Microsystems Llc

{"title":"Obtaining of aluminum nano-powders by thermal treatment","authors":"G. Paskalov, Usa Plasma Microsystems Llc","doi":"10.26577/phst-2019-1-p8","DOIUrl":"https://doi.org/10.26577/phst-2019-1-p8","url":null,"abstract":"It is known that the formation of a dispersed phase under extreme conditions (high temperatures andprocess speed) leads to the formation of a non-equilibrium structure of particles. Therefore, the first toattract attention are technologies based on pulsed processes with high rates of change in the thermodynamicparameters of the system. One of these promising methods for obtaining a wide range of nano-powders ofinorganic materials is the technology based on the process of electrical explosion of a conductor (EVP, EVPtechnology) [1-5]. Unfortunately, this method is not applicable on industrial scales. In this thesis, productionof Al nanoparticles by hydrogen reduction of metal chlorides in gas phase was studied. Nanoparticles haveunique properties not found in bulk or micron-scale materials. These enable new products or reduced useof raw materials. Metal nanoparticle production has been studied widely, but especially for coated metalparticles, research of coating mechanisms and economic production methods is still needed. The usedmethod combines a high yield, a high production rate, low production costs, high particle quality, and agood range of available particle number average diameters and other properties. Control of the productparameters has been carried out by using a special quenching system and plasma reactor configuration.Highly hydrogen enriched Al nanopowder were collected in metal form and tested for different applications.","PeriodicalId":321102,"journal":{"name":"Physical Sciences and Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131577776","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

Analysis and identification of platinum-containing nanoproducts of plasma-chemical synthesis in a gaseous medium 气态介质中等离子体化学合成含铂纳米产物的分析与鉴定

Physical Sciences and Technology Pub Date : 2019-07-30 DOI: 10.26577/phst-2019-1-p9

D. Schur, A. Zolotarenko, A. Zolotarenko, E. P. Zolotarenko, M. V. Chimbai, A. Zolotarenko, N. Akhanova, M. Sultangazina

{"title":"Analysis and identification of platinum-containing nanoproducts of plasma-chemical synthesis in a gaseous medium","authors":"D. Schur, A. Zolotarenko, A. Zolotarenko, E. P. Zolotarenko, M. V. Chimbai, A. Zolotarenko, N. Akhanova, M. Sultangazina","doi":"10.26577/phst-2019-1-p9","DOIUrl":"https://doi.org/10.26577/phst-2019-1-p9","url":null,"abstract":"This article studies a nanoproduct that is formed by simultaneous plasma-chemical evaporation ofgraphite and platinum. It was shown that the resulting deposits under different synthesis conditions havea similar and well-defined structure and consist of two main parts (core and enclosing bark). The structureof both parts is investigated at the micro- and nanoscale levels. The products of synthesis and similarproducts obtained without the use of platinum has been compared. The distribution of platinum in synthesisproducts is studied. It is proved that the atoms of the platinum catalyst influence the process of formationof the deposit. Namely, it stimulates the formation of a deposit where the deposit core containing platinumcontainingbundles of CNT exists as an independent core that does not have a strong connection with thedeposit shell. It is found that differential-thermal analysis of CNM in air by the methods of TG, DTG, DTAallows to reveal insignificant differences in the heat resistance of different carbon nanostructures, and thusit can be used for their identification. Such studies are of great importance for the synthesis of platinumcontainingcatalysts for fuel cells and other chemical industries.","PeriodicalId":321102,"journal":{"name":"Physical Sciences and Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114564774","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: 14

The fundamental equation of the field theory in De Sitter pulse space 德西特脉冲空间中场论的基本方程

Physical Sciences and Technology Pub Date : 2019-07-30 DOI: 10.26577/PHST-2019-1-P4

R. Ibadov, S. Murodov

引用次数: 0

Asymptotic behavior of numerical solutions of the Schrodinger equation 薛定谔方程数值解的渐近性质

Physical Sciences and Technology Pub Date : 2019-07-30 DOI: 10.26577/phst-2019-1-p3

F. Pen'kov, P. Krassovitskiy

引用次数: 0

The first excited 1/2+ state in 9Be and 9B 在9Be和9B中第一个激发态是1/2+

Physical Sciences and Technology Pub Date : 2019-07-30 DOI: 10.26577/phst-2019-1-p7

M. Odsuren, Y. Kikuchi, T. Myo, K. Katō

引用次数: 0

Search for structures in the distribution of particles from the central area of wide atmospheric showers conducted on the Adron-55 installation 在Adron-55装置上进行的广泛大气阵雨中心区域颗粒分布的结构搜索

Physical Sciences and Technology Pub Date : 2019-07-30 DOI: 10.26577/phst-2019-1-p10

K. Mukashev, A.Kh. Arginova, A. D. Baisenova, Bakhtiyar Iskakov, R. Mukhamedshin, O. Novolodskaya, V. Piskal, V. Ryabov, T. Sadykov, A. Serikkanov, Y. M. Tautaev, V. Zhukov, N. N. Zastrozhnova

{"title":"Search for structures in the distribution of particles from the central area of wide atmospheric showers conducted on the Adron-55 installation","authors":"K. Mukashev, A.Kh. Arginova, A. D. Baisenova, Bakhtiyar Iskakov, R. Mukhamedshin, O. Novolodskaya, V. Piskal, V. Ryabov, T. Sadykov, A. Serikkanov, Y. M. Tautaev, V. Zhukov, N. N. Zastrozhnova","doi":"10.26577/phst-2019-1-p10","DOIUrl":"https://doi.org/10.26577/phst-2019-1-p10","url":null,"abstract":"The ionization calorimeter “Adron-55”, located at an altitude of 3340 meters above sea level, is partof the unified registration system for the shower installation of the Tian-Shan high-mountain station. The“Hadron-55” installation is a 2-tier ionization calorimeter consisting of a shower system, a gamma blockand a hadron block located under it with a vertical air gap of 2.2 meters. The calorimeter consists of 6layers of ionization chambers with 144 chambers in each layer and a spatial resolution of the WASstructure equal to 11 cm. The total area of the calorimeter is 55 square meters with an absorber thicknessof 1150 g / cm2. The calorimeter also contains helium counters for recording the neutron component. Thecentral shower calorimeter system contains 30 scintillation detectors with an area of 400 m2 and 8peripheral Sc-detectors at a distance of up to 100 m. The total area of the entire recording system is ~30000 m2. Over 4 years of operation, more than 120,000 events with energies above 1015 eV have beenrecorded. Currently, the processing and analysis of the data being obtained are performed.","PeriodicalId":321102,"journal":{"name":"Physical Sciences and Technology","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128642008","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

The plasma parameters and neutron yield at device of "Plasma focus" “等离子体焦点”装置的等离子体参数和中子产率

Physical Sciences and Technology Pub Date : 2019-07-30 DOI: 10.26577/phst-2019-1-p2

A. Zhukeshov, Z. Moldabekov, A. Ioffe

引用次数: 0

Periodic variations in time of atmospheric alpha and beta radioactive nanoparticles 大气α和β放射性纳米粒子时间的周期性变化

Physical Sciences and Technology Pub Date : 2019-07-29 DOI: 10.26577/phst-2019-1-p6

V. Dyachkov, Y. Zaripova, A. Yushkov, A. Shakirov, M. Bigeldiyeva, K. S. Dyussebayeva, K. E. Abramov

{"title":"Periodic variations in time of atmospheric alpha and beta radioactive nanoparticles","authors":"V. Dyachkov, Y. Zaripova, A. Yushkov, A. Shakirov, M. Bigeldiyeva, K. S. Dyussebayeva, K. E. Abramov","doi":"10.26577/phst-2019-1-p6","DOIUrl":"https://doi.org/10.26577/phst-2019-1-p6","url":null,"abstract":"Here we present time variations data of radon emanations in the surface layer of the atmosphere,measured from January 2016 to June 2018. By means of spectral analysis method, we have analyzed timevariations and showed the presence of existing natural variations, mechanisms of which were describedby the authors in previous works. Authors measured the activity of natural beta-active radionuclides ofradon’s daughter decay products (DDP) in the surface layer of the atmosphere. The measurements wereperformed with a beta-spectrometer “Progress” scintillation detector, which is located on the third floor ofthe Faculty of Physics and Technology at al-Farabi Kazakh National University (KazNU). Measurementsof beta spectra were carried out with an exposure of at least for 2000 seconds and during the day up to 10beta spectra were recorded. The built up time dependence of the integral values of the spectra shows thatseasonal variations of natural beta-active radionuclides are manifested on the background of diurnalfluctuations. Thus, 1 day, 4 day, 7 day, 16 day and 30 day variations were found.","PeriodicalId":321102,"journal":{"name":"Physical Sciences and Technology","volume":"611 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116076023","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: 2

On three-cluster disintegration of 9Be 关于9Be的三团簇分解

Physical Sciences and Technology Pub Date : 2019-07-29 DOI: 10.26577/phst-2019-1-p5

V. Vasilevsky, K. Katō

引用次数: 0

Stationar spherical-symmetric configuration of dark matter 暗物质的静止球对称构型

Physical Sciences and Technology Pub Date : 1900-01-01 DOI: 10.26577/phst.2020.v7.i1.10

M. Abishev, N. Beissen, B. Karsimanov, I. Uspanov, M. Alimkulova

引用次数: 0