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Belov, Nikolay A.,Nizhegorodova, Yulia A.,Kim, Seungju,Han, Sang Hoon,Yampolskii, Yuri P.,Lee, Young Moo American Chemical Society 2013 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH - Vol.52 No.31
<P>This work reports the first investigation using the inverse gas chromatography method of a polyimide precursor and the product of its thermal rearrangement (TR polymer), extensively studied earlier. Sorption of gases (CO<SUB>2</SUB>, C<SUB>2</SUB>H<SUB>6</SUB>, C<SUB>3</SUB>H<SUB>8</SUB>) was studied at the finite dilution regime, while vapors (<I>n</I>-alkanes C<SUB>7</SUB>, C<SUB>8</SUB>, C<SUB>10</SUB>, C<SUB>14</SUB>, C<SUB>16</SUB>) were investigated at infinite dilution. It was demonstrated that thermal treatment at 450 °C results in a significant increase in the solubility coefficients <I>S</I> for large gas molecules. The absolute values observed for the TR polymer solubility coefficients of solutes are significant and comparable with those for the polymer of intrinsic microporosity (PIM-1), the polymer known by the greatest <I>S</I> values among all of the polymers studied. Sorption thermodynamics in the TR polymer is distinguished by very large and negative mixing parameters: enthalpy <I>h̅</I><SUB><SUB>1</SUB></SUB><SUP><I>E</I>,∞</SUP> and entropy <I>s̅</I><SUB><SUB>1</SUB></SUB><SUP><I>E</I>,∞</SUP>.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/iecred/2013/iecred.2013.52.issue-31/ie3034027/production/images/medium/ie-2012-034027_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ie3034027'>ACS Electronic Supporting Info</A></P>
Papynov, E.K.,Belov, A.A.,Shichalin, O.O.,Buravlev, I. Yu,Azon, S.A.,Golub, A.V.,Gerasimenko, A.V.,Parotkina, Yu. А.,Zavjalov, A.P.,Tananaev, I.G.,Sergienko, V.I. Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.7
In the present study, an original spark plasma sintering-reactive synthesis (SPS-RS) method for minerallike ceramic materials based on SrAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> feldspar-like skeleton structure was used for the first time, promising solid-state matrices for reliable immobilization of high-energy <sup>90</sup>Sr. The method is based on the "in-situ" reaction of a mixture of SrO, Al<sub>2</sub>O<sub>3</sub> and SiO<sub>2</sub> oxides when heated by a unipolar pulsed current under compacting pressure. The phase and elemental composition structure were studied. The dynamics of the consolidation of the reaction mixture of oxides was studied in the range of 900-1200 ℃. The study found the temperature of the high-speed (minutes) SPS-RS formation of single-phase SrAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> composition ceramic in the absence of intermediate reaction products with a relative density of up to 99.2% and compressive strength up to 145 MPa and a strontium leaching rate of 10<sup>-4</sup>g/cm<sup>2</sup>·day.
ACTIVATION ANALYSIS OF ENVIRONMENTAL SAMPLES USING THE MT-25 MICROTRON OF THE FLNR
Maslov, O.D.,Belov, A.G.,Starodub, G.Ya.,Dmitriev, S.N. The Korean Society of Analytical Sciences 1995 분석과학 Vol.8 No.4
Instrumental neutron and gamma activation analysis of coal and combustion products, determination of platinum content in natural samples by radiochemical gamma activation analysis and high-sensitive track method of thorium determination has been studied with the use of the MT-25 microtron.The optimal conditions for complete elemental analysis of coal and combustion products, isolation and determination of platinum and thorium are recommended.
Spark plasma sintering of UO2 fuel composite with Gd2O3 integral fuel burnable absorber
Papynov E.K.,Shichalin O.O.,Belov A.A.,Portnyagin A.S.,Buravlev I.Yu,Mayorov V.Yu,Sukhorada A.E.,Gridasova E.A.,Nomerovskiy A.D.,Glavinskaya V.O.,Tananaev I.G.,Sergienko V.I. 한국원자력학회 2020 Nuclear Engineering and Technology Vol.52 No.8
The paper studies spark plasma sintering (SPS) of industrially used UO2-based fuel containing integral fuel burnable absorber (IFBA) of neutrons Gd2O3. Densification dynamics of pristine UO2 powder and the one added with 2 and 8 wt% of Gd2O3 under ultrasonication in liquid has been studied under SPS conditions at 1050, 1250, and 1450 C. Effect of sintering temperature on phase composition as well as on O/U stoichiometry has been investigated for UO2 SPS ceramics. Sintering of uranium dioxide added with Gd2O3 yields solid solution (U,Gd)O2, which is isostructural to UO2. SEM with EDX and metallography were implemented to analyze the microstructure of the obtained UO2 ceramics and composite UO2- Gd2O3 one, particularly, open porosity, defects, and Gd2O3 distribution were studied. Microhardness, compressive strength and density were shown to reduce after addition of Gd2O3. Obtained results prove the hypothesis on formation of stable pores in the system of UO2-Gd2O3 due to Kirkendall effect that reduces sintering efficiency. The paper expands fundamental knowledge on pros and cons of fuel fabrication with IFBA using SPS technology.
Investigation of radioactivity-induced backgrounds in EXO-200
Albert, J. B.,Auty, D. J.,Barbeau, P. S.,Beck, D.,Belov, V.,Benitez-Medina, C.,Breidenbach, M.,Brunner, T.,Burenkov, A.,Cao, G. F.,Chambers, C.,Cleveland, B.,Coon, M.,Craycraft, A.,Daniels, T.,Danilov American Physical Society 2015 PHYSICAL REVIEW C - Vol.92 No.1
Panasenko A.E.,Shichalin O.O.,Yarusova S.B.,Ivanets A.I.,Belov A.A.,Dran'kov A.N.,Azon S.A.,Fedorets A.N.,Buravlev I. Yu,Mayorov V. Yu,Shlyk D. Kh,Buravleva A.A.,Merkulov E.B.,Zarubina N.V.,Papynov E. 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.9
A new approach to the use of rice straw as a difficult-to-recycle agricultural waste was proposed. Potassium aluminosilicate was obtained by spark plasma sintering as an effective material for subsequent immobilization of 137Cs into a solid-state matrix. The sorption properties of potassium aluminosilicate to 137Cs from aqueous solutions were studied. The effect of the synthesis temperature on the phase composition, microstructure, and rate of cesium leaching from samples obtained at 800e1000 C and a pressure of 25 MPa was investigated. It was shown that the positive dynamics of compaction was characteristic of glass ceramics throughout the sintering. Glass ceramics RS-(K,Cs)AlSi3O8 obtained by the SPS method at 1000 C for 5 min was characterized by a high density of ~2.62 g/cm3 , Vickers hardness ~ 2.1 GPa, compressive strength ~231.3 MPa and the rate of cesium ions leaching of ~1.37 107 g cm2 $day1 . The proposed approach makes it possible to safe dispose of rice straw and reduce emissions into the atmosphere of microdisperse amorphous silica, which is formed during its combustion and causes respiratory diseases, including cancer. In addition, the obtained is perspective to solve the problem of recycling long-lived 137Cs radionuclides formed during the operation of nuclear power plants into solid-state matrices.
Specifics of Teaching Foreign Language in a Non-Philological Field of Study:
Radoslav Ď,urajka(라도슬라브 두라이카),Janka Bá,belová,(얀카 바벨로바) 한국외국어대학교 동유럽발칸연구소 2018 동유럽발칸연구 Vol.42 No.3
이 논문은 제2외국어 습득 분야에서 중요하면서도 흥미로운 최신 주제인, 비어문학 분야의 교육에 있어서의 특징을 다루고 있다. 언어 학습과 습득 과정은 여러 가지 요인에 의해 영향을 받는데 이는 언어적 요인과 비언어적 요인으로 나누어 볼 수 있다. 이 가운데 가장 중요한 지표 중 하나는 비어문학 분야와 같이 일반적이면서도 공통적인 특성을 가진 분야에서도 언어 학습자들 사이에 개인적 차이가 크게 나타난다는 사실이다. 저자들은 비어문학적인 학문 분야에서의 언어교육에 초점을 맞추고 있다. 저자들은 6개의 세부사항을 발견했다. 물론 그것이 전부가 아니라는 것 사실을 잘 인지하고 있다. 다만 이 논문이 다른 연구들과 교사 및 언어를 습득한 사람들이 아이디어와 실용적인 경험, 특히 언어 습득 과정에서 유용하고 유익한 경험을 공유할 수 있도록 동기를 부여하기 바란다. 의대생들을 가르치는데 있어서 고려된 세부사항들은 비언어적 요인들의 중요성을 보여준다. 저자들은 또한 (전문적인) 의사소통이라는 교육목표에 관심을 기울인다. 저자들은 또한 학생들의 의사소통 전략과 슬로바키아어에 대한 태도에 일정 부분 주목하였다. 본 논문을 통해 저자들은 특정한 -주로 슬로바키아어와 영어- 언어학적인 이론 배경과 이차문헌에 대한 그들 의 지식뿐만 아니라, 저자들의 오랜 경험들에 대한 깊은 통찰력을 나누고자 한다 본 논문은 광범위한 언어, 교육 및 의사소통적인 맥락에서 제시된 이 론적인 관찰, 사실 및 발언뿐만 아니라 교육/학습의 실례를 제시한다. The paper presents an important, up-to-date and interesting topic from the field of the second language acquisition – its special features of teaching in non-philological study. The process of language learning and acquiring is influenced by several factors – language and non-language ones. One of the most important indicators is the fact that there is a high rate of individualism among language learners, despite the common general characteristic as, e.g., non-philological field. Authors focus of specifics of language teaching in non-philological field of study. Authors found six specifics and they understand that it is not the final closed amount. They would be happy if this article motivates others researches, teachers and people who acquire language to share ideas, practical experiences, especially those that are useful and helpful in the process of language acquisition. Selected specifics in teaching medical students shows the importance of non-language ones. Authors also aim their attention to the teaching goal –to (professional) communication. They partly also pay attention to communication strategies of students and their attitude to Slovak. New teaching material try to prove a profound insight to the problematic, a long experience of authors as well as their knowledge of the particular linguistic theoretical background and secondary literature, mainly Slovak and English. This article brings theoretical observations, facts and remarks presented in the broader linguistic, didactic and communicative context as well as illustrative examples from teaching / learning practice.
АККУЛЬТУРАЦИЯ ИНОСТРАННЫХ СТУДЕНТОВ В ПОЛИКУЛЬТУРНОМ ОБРАЗОВАТЕЛЬНОМ ПРОСТРАНСТВЕ РОССИЙСКИХ ВУЗОВ
Ж.Н.Халиман(Z.N. Haliman),А.В.Белов(A.V. Belov) 동북아시아문화학회 2008 동북아시아문화학회 국제학술대회 발표자료집 Vol.- No.-
The article is devoted to problem of Chinese students adaptation in Russia. Authors use questioning students as the main method. They have studied difficulties of the Chinese students in Russia. The main problem is social danger. Authors have developed model of adaptation for students. In article are stated the main ideas of this model.