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Классическое решение в четверти плоскости смешанной задачи для волнового уравнения 波方程四分之一平面的经典解
Doklady Akademii nauk Pub Date : 2019-01-13 DOI: 10.29235/1561-8323-2018-62-6-647-651
В. И. Корзюк, И. С. Козловская, В. Ю. Соколович
{"title":"Классическое решение в четверти плоскости смешанной задачи для волнового уравнения","authors":"В. И. Корзюк, И. С. Козловская, В. Ю. Соколович","doi":"10.29235/1561-8323-2018-62-6-647-651","DOIUrl":"https://doi.org/10.29235/1561-8323-2018-62-6-647-651","url":null,"abstract":"This article presents the classical solution with mixed boundary conditions in the quarter of the plane for the wave equation in the analytical form. The boundary of the region consists of two perpendicular half-straight lines. On one of them, Cauchy’s boundary conditions are assigned. The second half-straight line is divided into two parts. Dirichlet’s condition is assigned on the straight line and Neumann’s conditions – on the half-straight line. The classical solution of the considered problem is defined in the class of double continuous differentiable functions in the quarter of the plane. To build this solution, the partial solution of the initial wave equation is written. For the assigned functions of the problem, the matching conditions are written, which are necessary and enough so that the solution of the problem would be classical and unique.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"20 1","pages":"647-651"},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78826222","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: 3
Качество зерна у линий мягкой пшеницы T. aestivum с интрогрессией генетического материала T. dicoccoides и T. dicoccum 软小麦T. aestivum小麦的质量，遗传物质T. dicocodes和T. dicoccum的内变性
Doklady Akademii nauk Pub Date : 2019-01-13 DOI: 10.29235/1561-8323-2018-62-6-712-718
О. А. Орловская, С. И. Вакула, Л. В. Хотылева, А. В. Кильчевский
{"title":"Качество зерна у линий мягкой пшеницы T. aestivum с интрогрессией генетического материала T. dicoccoides и T. dicoccum","authors":"О. А. Орловская, С. И. Вакула, Л. В. Хотылева, А. В. Кильчевский","doi":"10.29235/1561-8323-2018-62-6-712-718","DOIUrl":"https://doi.org/10.29235/1561-8323-2018-62-6-712-718","url":null,"abstract":"Related wild and cultural wheat species are regularly involved for expanding T. aestivum genetic diversity because they contain many valuable genes. We evaluated the effect of the genetic material of tetraploid species of the genus Triticum (T. dicoccoides, T. dicoccum) on the grain quality of introgression lines of spring bread wheat. The composition of the high molecular weight glutenin subunits which play an essential role in the formation of wheat baking properties was identified in the introgression lines of bread wheat and their parental forms. The traits of grain quality (hardness, protein and gluten content, gluten quality) were also evaluated. The lines with Glu-1 loci alleles from wheat relatives T. dicoccoides and Т. dicoccum were selected. It was found that the introgression of alien genetic material into the common wheat genome had a positive effect on the parameters of grain quality such as hardness, protein and gluten content. The lines with Glu-A1 loci alleles from T. dicoccoides and Glu-B1 from T. dicoccum were at the level of a parent wheat variety or of a higher gluten quality. As a result of the research, the new lines of bread soft wheat with high grain quality were found and can be used in the crop breeding.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"172 1","pages":"712-718"},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77294481","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
Структурные и физико-химические преобразования перикардиальных имплантатов, модифицированных эпоксидной смолой
Doklady Akademii nauk Pub Date : 2019-01-13 DOI: 10.29235/1561-8323-2018-62-6-703-711
A. A. Gaidash, A. I. Kulak, K. V. Drozdovski, V. V. Kazbanov, V. K. Krut’ko, O. N. Musskaya, Yu. I. Linnik, K. V. Skrotskaya
{"title":"Структурные и физико-химические преобразования перикардиальных имплантатов, модифицированных эпоксидной смолой","authors":"A. A. Gaidash, A. I. Kulak, K. V. Drozdovski, V. V. Kazbanov, V. K. Krut’ko, O. N. Musskaya, Yu. I. Linnik, K. V. Skrotskaya","doi":"10.29235/1561-8323-2018-62-6-703-711","DOIUrl":"https://doi.org/10.29235/1561-8323-2018-62-6-703-711","url":null,"abstract":"Bovine pericardium samples modified with ethylene glycol diglycidyl ether, designed for surgical correction of congenital heart defects and large blood vessels, were studied by scanning electron microscopy, X-ray diffraction, IR spectroscopy, and differential thermal analysis. It was found that the initial samples of pericardium, before implantation, contain sites of disorganization of the collagen matrix, fragile fracture of collagen fibrils and destruction of the interstitial membranes promoting the penetration of immunocytes into the deep layers of the pericardium. Ossifying calcification with amorphized hydroxyapatite deposition and bone tissue formation as well as multiple erosions and hypertrophic proliferation in the endothelial membrane were detected in the implantation pericardium samples.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"16 1","pages":"703-711"},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82674110","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: 1
Особенности проявления йододефицита на территории Республики Беларусь 白俄罗斯共和国境内尤多赤字现象
Doklady Akademii nauk Pub Date : 2019-01-13 DOI: 10.29235/1561-8323-2018-62-6-739-749
С. Л. Романов, Александр Николаевич Червань, Е. М. Коробова, Т. С. Яблонская
{"title":"Особенности проявления йододефицита на территории Республики Беларусь","authors":"С. Л. Романов, Александр Николаевич Червань, Е. М. Коробова, Т. С. Яблонская","doi":"10.29235/1561-8323-2018-62-6-739-749","DOIUrl":"https://doi.org/10.29235/1561-8323-2018-62-6-739-749","url":null,"abstract":"A medium-scale map of iodine deficiency in the territory of the Republic of Belarus was created for the first time. The map characterizes in detail a spatial variation of iodine concentration in soils of Belarus. The article analyzes a spatial specificity of the ecological situation formed as a result of heterogeneity of the iodine content in soils. Using the means of a specialized GIS, the area of high iodine deficiency was identified at the level of administrative regions. The identified area was further differentiated in terms of different level of ecological risk due to a natural soil iodine deficiency. As a result of such geoinformation analysis, the areas of moderate, significant and greatest risks were established in the territory of Belarus. These regions should become the objects of high priority monitoring and are directly in need of targeted preventive measures.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"44 1","pages":"739-749"},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76332343","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
Механизмы стабилизации современного климата
Doklady Akademii nauk Pub Date : 2019-01-13 DOI: 10.29235/1561-8323-2018-62-6-750-755
С. А. Лысенко, В. Ф. Логинов, С. Л. Ощепков
{"title":"Механизмы стабилизации современного климата","authors":"С. А. Лысенко, В. Ф. Логинов, С. Л. Ощепков","doi":"10.29235/1561-8323-2018-62-6-750-755","DOIUrl":"https://doi.org/10.29235/1561-8323-2018-62-6-750-755","url":null,"abstract":"This article investigates the causes and mechanism of change in the climatic pause from 1998 to 2014. In particular, based on the satellite data and the meteorological reanalysis we found a relationship between the temperature of the tropical region of the Pacific Ocean, the speed of the surface wind, and the total content of water vapor in the atmosphere. We also showed that the climatic pause can be explained by a decrease in the water vapor content in the atmosphere and evaluated how this decrease affected the radiation balance of the ground surface. The observed dynamics of water vapor is shown to lead to a decrease in the incoming part of the radiation balance of the ground surface by an amount, which is more than one order of magnitude larger than that caused by the increase in anthropogenic carbon dioxide. It was demonstrated that a decrease in the cloud cover optical thickness could also lead to the stabilization of the global temperature by means of radiative heating of the underlying surface.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"48 7 1","pages":"750-755"},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88564867","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
Красное смещение излучения точечного источника, движущегося в поле вращающейся черной дыры 在旋转黑洞场中移动的点源的红移
Doklady Akademii nauk Pub Date : 2019-01-13 DOI: 10.29235/1561-8323-2018-62-6-668-673
С. О. Комаров, А. К. Горбацевич, А. Н. Тарасенко
{"title":"Красное смещение излучения точечного источника, движущегося в поле вращающейся черной дыры","authors":"С. О. Комаров, А. К. Горбацевич, А. Н. Тарасенко","doi":"10.29235/1561-8323-2018-62-6-668-673","DOIUrl":"https://doi.org/10.29235/1561-8323-2018-62-6-668-673","url":null,"abstract":"The method of calculation of redshift of light from a point-like source that moves in the gravitational field of the Kerr black hole as a function of time of observation is developed. The widely presented in literature methods for solving the boundary problem are based on a numerical selection of parameters of geodesics. In contrast, the proposed method is based on approximate analytical expressions for isotropic geodesics in the Kerr metric. The proposed method is illustrated by the example of a model problem with parameters corresponding to real stars moving in the immediate vicinity of a supermassive black hole located in the Center of our Galaxy. The same example shows the efficiency and good accuracy of this method.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"46 1","pages":"668-673"},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85919248","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
On the Possibility of Separation of Ammonium Bisulphate into Sulphate and Acid in the Cyclic Salt-Type Processing Alumina-Containing Raw Materials 循环盐型加工含铝原料中硫酸亚铵分离为硫酸盐和酸的可能性
Doklady Akademii nauk Pub Date : 2018-10-14 DOI: 10.31857/S086956520001196-8
A. N. Gruzdeva, R. Khamizov, L. Kogarko, A. N. Krachak, L. P. Moroshkina, N. S. Vlasovskikh, V. Zaitsev
{"title":"On the Possibility of Separation of Ammonium Bisulphate into Sulphate and Acid in the Cyclic Salt-Type Processing Alumina-Containing Raw Materials","authors":"A. N. Gruzdeva, R. Khamizov, L. Kogarko, A. N. Krachak, L. P. Moroshkina, N. S. Vlasovskikh, V. Zaitsev","doi":"10.31857/S086956520001196-8","DOIUrl":"https://doi.org/10.31857/S086956520001196-8","url":null,"abstract":"","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"2011 1","pages":"166-168"},"PeriodicalIF":0.0,"publicationDate":"2018-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73855146","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 Sulfur Content in Melt Fe-S on Diamond Preservation at P-T Conditions of the Earth’s Mantle 熔融Fe-S中硫含量对地幔P-T条件下金刚石保存的影响
Doklady Akademii nauk Pub Date : 2018-10-14 DOI: 10.31857/S086956520001203-6
V. Sonin, E. Zhimulev, A. Chepurov, N. Pokhilenko
{"title":"Influence of Sulfur Content in Melt Fe-S on Diamond Preservation at P-T Conditions of the Earth’s Mantle","authors":"V. Sonin, E. Zhimulev, A. Chepurov, N. Pokhilenko","doi":"10.31857/S086956520001203-6","DOIUrl":"https://doi.org/10.31857/S086956520001203-6","url":null,"abstract":"","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"4 1","pages":"193-196"},"PeriodicalIF":0.0,"publicationDate":"2018-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89215251","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
Zirconology of Granitoids from the Basement Yamal (Age and Composition of Inclusions) 亚马尔基底花岗岩的锆石学(包裹体年龄及组成)
Doklady Akademii nauk Pub Date : 2018-09-13 DOI: 10.31857/S086956520000054-2
Yu. V. Erokhin, K. Ivanov, V. Khiller, V. Koroteev
{"title":"Zirconology of Granitoids from the Basement Yamal (Age and Composition of Inclusions)","authors":"Yu. V. Erokhin, K. Ivanov, V. Khiller, V. Koroteev","doi":"10.31857/S086956520000054-2","DOIUrl":"https://doi.org/10.31857/S086956520000054-2","url":null,"abstract":"","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"37 1","pages":"67-70"},"PeriodicalIF":0.0,"publicationDate":"2018-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77807004","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: 1
ПРИЧИНА МЕТАМАГНИТНОГО ПЕРЕХОДА В EuMn0,5Co0,5O3
Doklady Akademii nauk Pub Date : 2018-06-28 DOI: 10.29235/1561-8323-2018-62-3-268-273
И. О. Троянчук, М. В. Бушинский, Н. В. Терешко, А. Н. Чобот, О. С. Мантыцкая, Г. М. Чобот, В. М. Добрянский, С. Н. Пастушонок
{"title":"ПРИЧИНА МЕТАМАГНИТНОГО ПЕРЕХОДА В EuMn0,5Co0,5O3","authors":"И. О. Троянчук, М. В. Бушинский, Н. В. Терешко, А. Н. Чобот, О. С. Мантыцкая, Г. М. Чобот, В. М. Добрянский, С. Н. Пастушонок","doi":"10.29235/1561-8323-2018-62-3-268-273","DOIUrl":"https://doi.org/10.29235/1561-8323-2018-62-3-268-273","url":null,"abstract":"The magnetic properties of perovskite EuMn0.5Co0.5O3, obtained under different synthesis conditions, have been studied. It is shown that the sample obtained at 1500 °C exhibits a metamagnetic transition, whereas in the sample obtained at 1200 °C, the field dependence of magnetization as in a ferromagnet was observed. The both samples have TC = 123 K and approximately equal to magnetization in large magnetic fields. Metamagnetism is associated with a transition from a noncollinear to a collinear magnetic phase, whereas the presence of clusters with the ordering of Co2+ and Mn4+ ions leads to ferromagnetism. The noncollinear phase is formed due to the competition of positive Co2+–Mn4+ and negative Mn4+–Mn4+, Co2+–Co2+ interactions and due to large magnetic anisotropy.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"49 1","pages":"268-273"},"PeriodicalIF":0.0,"publicationDate":"2018-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85746204","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
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