Modification of Hypereutectic Silumin by Ion-Electron-Plasma Method

2018 ◽  
Vol 769 ◽  
pp. 54-59
Author(s):  
Maria E. Rygina ◽  
Yurii F. Ivanov ◽  
Alexander P. Laskovnev ◽  
Anton D. Teresov ◽  
Nikolay N. Cherenda ◽  
...  
Keyword(s):  
Plasma Deposition ◽  
Second Step ◽  
State University ◽  
Technical Institute ◽  
National Academy Of Sciences ◽  
Sliding Bearings ◽  
Near Surface ◽  
Aluminum Silicon Alloy ◽  
Ion Plasma ◽  
Academy Of Sciences

Hypereutectic silumin is aluminum-silicon alloy. It is widely used as the material for producing pistons and sliding bearings. The samples were obtained in Belorussian State University and in the Physical-Technical Institute of the National Academy of Sciences. The percentage of silicon is 18-20 wt.%. The structure has a large number of pores and cracks. The size of pores is 100 μm. The method of modification have been carried out in two steps. The first step is ion-plasma deposition ZrTiCu coating. The second step is melting the coating into the substrate. After modification microhardness is 3.2 GPa, wear resistance is 1.8 times less than in the untreated samples. The crystallites size is 0,2-0,4 μm. Thus, this method allows to obtain alloys in the near-surface layer, grinding the structure and increasing mechanical characteristics.

scholarly journals Reviewer Acknowledgements for Journal of Mathematics Research, Vol. 9, No. 2

2017 ◽  
Vol 9 (2) ◽  
pp. 155
Author(s):  
Sophia Wang
Keyword(s):  
United Arab Emirates ◽  
Medical Center ◽  
State University ◽  
National Academy Of Sciences ◽  
Bulgarian Academy ◽  
University Of Houston ◽  
Institute Of Technology ◽  
Mathematics Research ◽  
Academy Of Sciences

Journal of Mathematics Research wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal is greatly appreciated.Many authors, regardless of whether Journal of Mathematics Research publishes their work, appreciate the helpful feedback provided by the reviewers.Reviewers for Volume 9, Number 2  Alberto Simoes, University of Beira Interior, PortugalAli Berkol, Space and Defense Technologies & Baskent University, TurkeyArman Aghili, University of Guilan, IranCecilia Maria Fernandes Fonseca, Polytechnic of Guarda, PortugalGane Sam Lo, Universite Gaston Berger de Saint-Louis, SenegalMarek Brabec, Academy of Sciences of the Czech Republic, Czech RepublicMaria Alessandra Ragusa, University of Catania, ItalyMohammad Sajid, Qassim University, Saudi ArabiaMohd Hafiz, Universiti Sains Malaysia, , MalaysiaN. V. Ramana Murty, Andhra Loyola College, IndiaOlivier Heubo-Kwegna, Saginaw Valley State University, USAOmur Deveci, Kafkas University, TurkeyÖzgür Ege, Celal Bayar University, TurkeyPeng Zhang, State University of New York at Stony Brook, USAPhilip Philipoff, Bulgarian Academy of Sciences, BulgariaRovshan Bandaliyev, National Academy of Sciences of Azerbaijan, AzerbaijanSanjib Kumar Datta, University of Kalyani, IndiaSelcuk Koyuncu, University of North Georgia, USASergiy Koshkin, University of Houston Downtown, USAShenghua Ni, Vanderbilt University Medical Center, USAVishnu Narayan Mishra, Sardar Vallabhbhai National Institute of Technology, IndiaWaleed Al-Rawashdeh, Montana Tech, USAYifan Wang, University of Houston, USAYoussef Ei Foutayeni, Modeling and Simulation Laboratory Lams Hassan II University, MoroccoYoussef El-Khatib, United Arab Emirates University, United Arab EmiratesZoubir Dahmani, University of Mostaganem, Algeria Sophia WangOn behalf of,The Editorial Board of Journal of Mathematics ResearchCanadian Center of Science and Education

scholarly journals Reviewer Acknowledgements for Journal of Mathematics Research, Vol. 11, No. 2

2019 ◽  
Vol 11 (2) ◽  
pp. 200
Author(s):  
Sophia Wang
Keyword(s):  
State University ◽  
National Academy Of Sciences ◽  
Cape Coast ◽  
Saint Louis ◽  
University Of Houston ◽  
Science And Education ◽  
Florida International University ◽  
Mathematics Research ◽  
Academy Of Sciences

Reviewer Acknowledgements Journal of Mathematics Research wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal is greatly appreciated. Many authors, regardless of whether Journal of Mathematics Research publishes their work, appreciate the helpful feedback provided by the reviewers. Reviewers for Volume 11, Number 2   Ahmed Saad Rashed, Zagazig University, Egypt Alan Jalal Abdulqader, Al-Mustansiriyah University, Iraq Amjad Salari, Razi University, Iran Arman Aghili, University of Guilan, Iran Denis Khleborodov, Lomonosov Moscow State University, Russia Gane Sam Lo, Universite Gaston Berger de Saint-Louis, Senegal Gener Santiago Subia, NUeva Ecija University of Science and Technology, Philippines Ivan Drazic, University of Rijeka, Croatia Maria Alessandra Ragusa, University of Catania, Italy Maria Cecília Santos Rosa, Instituto Politecnico da Guarda, Portugal Martin Anokye, University of Cape Coast, Ghana Mohammad A. AlQudah, German Jordanian University, Jordan N. V. Ramana Murty, Andhra Loyola College, India Neha Hooda, New Jersey City University, United States Paul J. Udoh, University of Uyo., Nigeria Rovshan Bandaliyev, National Academy of Sciences of Azerbaijan, Azerbaijan Sanjib Kumar Datta, University of Kalyani, India Sergiy Koshkin, University of Houston Downtown, USA Suzana Blesic, Italy Vishnu Narayan Mishra, Indira Gandhi National Tribal University, India Zhongming Wang, Florida International University, USA   Sophia Wang On behalf of, The Editorial Board of Journal of Mathematics Research Canadian Center of Science and Education                                                                                                                         

scholarly journals Reviewer Acknowledgements for Journal of Mathematics Research, Vol. 10, No. 5

2018 ◽  
Vol 10 (5) ◽  
pp. 157
Author(s):  
Sophia Wang
Keyword(s):  
United States ◽  
Czech Republic ◽  
State University ◽  
National Academy Of Sciences ◽  
Bulgarian Academy ◽  
University Of Tennessee ◽  
University Of Houston ◽  
University Of Technology ◽  
Mathematics Research ◽  
Academy Of Sciences

Journal of Mathematics Research wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal is greatly appreciated. Many authors, regardless of whether Journal of Mathematics Research publishes their work, appreciate the helpful feedback provided by the reviewers. Reviewers for Volume 10, Number 5   Abdessadek Saib, University of Tebessa, Algeria Ahmed Saad Rashed, Zagazig University, Egypt Alan Jalal Abdulqader, Al-Mustansiriyah University, Iraq Alberto Simoes, University of Beira Interior, Portugal Ali Berkol, Space and Defense Technologies & Baskent University, Turkey Arman Aghili, University of Guilan, Iran Chung-Chuan Chen, National Taichung University of Education, Taiwan Denis Khleborodov, Lomonosov Moscow State University, Russia Gener Santiago Subia, NUeva Ecija University of Science and Technology, Philippines Guoping Zhan, Zhejiang University of Technology, China Hayat REZGUI, Ecole normale Supérieure de Kouba, Algeria Kuldeep Narain Mathur, University Utara Malaysia, Malaysia Marek Brabec, Academy of Sciences of the Czech Republic, Czech Republic Maria Alessandra Ragusa, University of Catania, Italy Mohammad A. AlQudah, German Jordanian University, Jordan N. V. Ramana Murty, Andhra Loyola College, India Neha Hooda, New Jersey City University, United States Özgür Ege, Ege University, Turkey Paul J. Udoh, University of Uyo., Nigeria Philip Yordanoff Philipoff, Bulgarian Academy of Sciences, Bulgaria Rami Ahmad El-Nabulsi, Athens Institute for Education and Research, Greece Rovshan Bandaliyev, National Academy of Sciences of Azerbaijan, Azerbaijan Salih Abdalla, University of El Imam El Mahdi, Sudan Sanjib Kumar Datta, University of Kalyani, India Sergiy Koshkin, University of Houston Downtown, USA Suzana Blesic, , Italy Vinodh Kumar Chellamuthu, Dixie State University, USA Wenqiang Feng, The University of Tennessee, United States Xiaofei Zhao , Texas A&M University , United States Xingbo WANG, Foshan University, China Zoubir Dahmani, University of Mostaganem, Algeria

scholarly journals Род Crataegus L. (Rosaceae) во флоре Нахчыванской Автономной Республики Азербайджана

2007 ◽  
Vol 7 (3) ◽  
pp. 32-42
Author(s):  
A.M. Ibrahimov
Keyword(s):  
Comparative Analysis ◽  
High Altitude ◽  
Field Data ◽  
State University ◽  
National Academy Of Sciences ◽  
Natural Conditions ◽  
Current State ◽  
Academy Of Sciences ◽  
Autonomous Republic ◽  
Azerbaijan National Academy

<p>The article presents the research of genus <em>Crataegus</em> L. diversity in the territory of the Nakhchivan Autonomous Republic. We provided comparative analysis of specimens from the herbarium of the Institute of Botany of Azerbaijan National Academy of Sciences, Institute of Bioresources of Nakhchivan Section of Azerbaijan National Academy of Sciences, and Nakhchivan State University to clarify the current state of the genus <em>Crataegus</em> L. in the flora of the Nakhichivan Autonomous Republic. Based on the analysis of field data and collected herbarium during 2004-2015 and literature data we revealed 22 species of the genus in the flora of the Nakhichevan Autonomous Republic at present time. We also fixed that some 17 wildgrowing species occur in natural conditions, among them <em>Crataegus chlorocarpa</em> Lenne et C. Koch, <em>C. ferganensis</em> Pojark., <em>C. sanguinea</em> Pall., <em>C. songarica</em> C. Koch, <em>C. turkestanica</em> Pojark. were introducted into the culture and used in the landscaping of parks and gardens. We also considered the data on synonyms species, patterns of distribution among high-altitude zones, habitats as well as period of flowering and fruiting.</p>

scholarly journals PHYSICAL MODELING FOR DENSITY MEASUREMENT OF NEAR-SURFACE ROCKS, BY WIRELINE LOGGING AND LOGGING WHILE DRILLING

2021 ◽  
pp. 35-41
Author(s):  
М. Bondarenko ◽  
V. Кulyk ◽  
O. Dmytrenko ◽  
S. Danyliv ◽  
O. Stasiv ◽  
...  
Keyword(s):  
Density Measurement ◽  
Carbonate Reservoirs ◽  
Physical Models ◽  
National Academy Of Sciences ◽  
Gas Wells ◽  
Near Surface ◽  
Cement Sheath ◽  
Logging While Drilling ◽  
Academy Of Sciences ◽  
Production Problems

The results of the creation of full-scale physical models of rocks for the calibration of combined tools of radioactive logging, which include density logging, are presented. Four sets of models were built for different logging problems. 1. Models of porous carbonate reservoirs with borehole (diameter 216 mm), equipped with interchangeable simulators of casing columns (146 mm і 168 mm) with cement sheath and tubing. The models are aimed to calibrate wireline logging tools for investigating the section of uncased and cased oil&gas wells. 2. Models of rocks of different density with borehole (160 mm), equipped with interchangeable drill collars (120 mm, 108 mm, 89 mm). The models are designed to calibrate density tools for logging while drilling horizontal oil&gas wells. 3. Universal models of porous carbonate reservoirs, crossed by holes of three diameters (200 mm, 160 mm, 125 mm). The purpose of the models is to calibrate wireline logging tools for investigation of section of uncased and cased oil&gas wells and tools for logging while drilling horizontal oil&gas wells. 4. Models of near-surface rocks of different density, equipped with a steel pipe (diameter of 51 mm) closely fitting to rock. The purpose of the models is to calibrate density tools for investigation of near-surface rocks when solving engineering-geological, seismic microzoning, ecological, etc problems. Physical models were designed and constructed by the employees of the Institute of Geophysics of the National Academy of Sciences of Ukraine together with partner organizations. The regular use of the models is due to the active work carried out by the Institute of Geophysics, together with partners, to create apparatus-methodical complexes of radioactive logging, which include the density logging. Graduation relationships and calibration functions for new density logging tools, obtained on the constructed physical models, as well as examples of density determination in different well conditions when solving research-and-production problems, are given.

III International seminar “Mire vegetation: modern problems of classification, mapping, use and protection” (Minsk – Grodno, Belarus, September, 26–28, 2018)

2018 ◽  
pp. 142-145
Author(s):  
O. V. Galanina
Keyword(s):  
Field Trips ◽  
International Seminar ◽  
Ecological Education ◽  
State University ◽  
National Academy Of Sciences ◽  
Tourist Attractions ◽  
The Third ◽  
Mire Vegetation ◽  
Experimental Botany ◽  
Academy Of Sciences

The third international seminar “Mire vegetation: modern problems of classification, mapping, use and protection” took place in September 26–28, 2018 in Belarus, Grodno Region. It was organized by B. F. Kuprevich Institute of Experimental Botany National Academy of Sciences of Belarus and Yanka Kupala State University of Grodno. Apart from two days of scientific sessions the participants went for half-day field trips visiting the landscape reserve “Ozery”. Two beautiful autumn mires: lake-side pine bog and river valley fen were appreciated by mire specialists from Lithuania, Russia and Belarus. The visit-center of the reserve offered the short lectures on nature, tourist attractions and prospective activities. On September 29 everyone was invited to joint an additional field trip and seminar held in Novy Dvor (Svisloch district) to support a preservation of Belovezhskaya Pushcha in Belarus. Local teachers and experts together with international mire researchers went to the Dikoe mire, the Ramsar site, were they had a training course in the field. All participants of the event were happy to be together, share the experiences and contribute to ecological education.

Sociology at the Belarusian State University: Origins and Philosophy of Development

2021 ◽  
Vol 64 (5) ◽  
pp. 31-44
Author(s):  
Alexander N. Danilov
Keyword(s):  
Practical Experience ◽  
State University ◽  
Research Experience ◽  
National Academy Of Sciences ◽  
Science And Education ◽  
The Republic ◽  
Post War ◽  
The 1960S ◽  
Academy Of Sciences

The article examines the origins and philosophy of the development of sociology at the Belarusian State University (BSU), which has accumulated the wisdom and socio-political thought of Belarusian thinkers of the past, absorbed the research experience of previous generations. Since the beginning of the work of BSU in 1921, the Department of Sociology and Primitive Culture was created (S.Z. Katzenbogen). The course in genetic sociology, which was taught by Professor S.Z. Katzenbogen, to a greater extent resembled a kind of fusion of philosophical and sociological thought and primitive history, was unlike modern ideas about sociological science. This period did not last long. Soon repressions broke out, the Great Patriotic War, and the post-war reconstruction took place, which significantly delayed the development of sociology as an independent science. All this time, sociology functioned in the bosom of philosophical knowledge, where the convergence of meanings and meaningful mutual enrichment took place, the difficult process of accumulating theoretical, methodological and practical experience was going on. The rticle highlights the key role of BSU in institutionalization, development of sociological science and education in Belarus. The leader of the revival of sociology at BSU was Professor G.P. Davidyuk (1923–2020). Following the example of the Belarusian State University, in the 1960s–1970s, sociological structures were created in all the leading universities of the republic; the work of the applied sociology sector of BSU contributed to the development of factory sociology. In 1989, a sociological department and a department of sociology were opened, at the end of 1996, the Center for Sociological and Political Research was established. Since 1997, the scientific and theoretical Journal of BSU. Sociology, and in 2000 the Belarusian Sociological Society began to function, a branch of the Department of Sociology of the Belarusian State University was opened at the Institute of Sociology of the National Academy of Sciences of Belarus. The traditions of previous generations, laid down by the leaders of the Belarusian sociological school, are gradually being transformed, taking into account the development of scientific, technological and informational and communicative progress, revising curricula and training programs for modern sociologists.

scholarly journals Paleontology: advancing China's international leadership

2018 ◽  
Vol 6 (1) ◽  
pp. 171-176
Author(s):  
Hepeng Jia
Keyword(s):  
The United States ◽  
Associate Editor ◽  
Leadership Role ◽  
State University ◽  
National Academy Of Sciences ◽  
Chinese Academy Of Sciences ◽  
The Status ◽  
Organismic Evolution ◽  
Academy Of Sciences ◽  
Robust Evidence

Abstract In recent years, Chinese scientists have achieved significant progress in paleontological discoveries and scientific studies. Series of studies published in top journals, such as Science, Nature and Proceedings of the National Academy of Sciences of the United States of America (PNAS), have astonished the world by presenting beautiful fossils that furnish robust evidence to enrich the understanding of organismic evolution, major extinctions and stratigraphy. It has been portrayed as the heyday in the paleontology of China. What is the status of the field? What factors have caused the avalanche of fossil discoveries in China? What implications can these new discoveries provide for our understanding of current evolution theories? How, given their significant contribution to the world's paleontology scholarship, can Chinese scientists play a due leadership role in the field? At an online forum organized by the National Science Review (NSR), its associate editor-in-chief, Zhonghe Zhou, asked four scientists in the field as well as NSR executive editor-in-chief Mu-ming Poo to join the discussion. Jin Meng Paleobiologist at American Museum of Natural History Mu-ming Poo Neurobiologist at Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences Shuzhong Shen Stratigrapher at Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences Shuhai Xiao Paleobiologist and geobiologist at Virginia Polytechnic Institute and State University Zhonghe Zhou (Chair) Paleobiologist at Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences

scholarly journals Reviewer Acknowledgements for Journal of Mathematics Research, Vol. 10, No. 6

2018 ◽  
Vol 10 (6) ◽  
pp. 117
Author(s):  
Sophia Wang
Keyword(s):  
Czech Republic ◽  
State University ◽  
National Academy Of Sciences ◽  
Bulgarian Academy ◽  
Saint Louis ◽  
University Of Houston ◽  
Science And Education ◽  
Mathematics Research ◽  
Academy Of Sciences

Journal of Mathematics Research wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal is greatly appreciated. Many authors, regardless of whether Journal of Mathematics Research publishes their work, appreciate the helpful feedback provided by the reviewers. Reviewers for Volume 10, Number 6 &nbsp; Abdessadek Saib, University of Tebessa, Algeria Ahmed Saad Rashed, Zagazig University, Egypt Arman Aghili, University of Guilan, Iran Denis Khleborodov, Lomonosov Moscow State University, Russia Gabriela Ciuperca, University Lyon 1, France Gane Sam Lo, Universite Gaston Berger de Saint-Louis, Senegal Gener Santiago Subia, NUeva Ecija University of Science and Technology, Philippines Hayat REZGUI, Ecole normale Sup&eacute;rieure de Kouba, Algeria Kuldeep Narain Mathur, University Utara Malaysia, Malaysia Marek Brabec, Academy of Sciences of the Czech Republic, Czech Republic Meltem Erden Ege, Manisa Celal Bayar University, Turkey Mohammad Sajid, Qassim University, Saudi Arabia Nik Mohd Asri Nik Long, Universiti Putra Malaysia, Malaysia Philip Yordanoff Philipoff, Bulgarian Academy of Sciences, Bulgaria Rami Ahmad El-Nabulsi, Athens Institute for Education and Research, Greece Rovshan Bandaliyev, National Academy of Sciences of Azerbaijan, Azerbaijan Sanjib Kumar Datta, University of Kalyani, India Sergiy Koshkin, University of Houston Downtown, USA &nbsp; Sophia Wang On behalf of, The Editorial Board of Journal of Mathematics Research Canadian Center of Science and Education

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