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Preparation and physicochemical properties of the Fe, Mn-oxides catalyst 铁锰氧化物催化剂的制备及其理化性质
Doklady Akademii nauk Pub Date : 2021-02-23 DOI: 10.29235/1561-8323-2021-65-1-46-51
A. Ivanets
{"title":"Preparation and physicochemical properties of the Fe, Mn-oxides catalyst","authors":"A. Ivanets","doi":"10.29235/1561-8323-2021-65-1-46-51","DOIUrl":"https://doi.org/10.29235/1561-8323-2021-65-1-46-51","url":null,"abstract":"A Fe, Mn-oxide catalyst was obtained by impregnation of thermally activated dolomite granules with aqueous solutions of Fe(III) and Mn(II) sulfates followed by heat treatment. Its physicochemical properties were studied using differential thermal analysis, X-ray diffraction, low-temperature adsorption-desorption of nitrogen, and scanning electron microscopy. The high efficiency of Fe(II) ion oxidation in aqueous media in a flow-type catalytic reactor was shown, which makes the obtained catalyst promising for the deironization of artesian waters.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"16 1","pages":"46-51"},"PeriodicalIF":0.0,"publicationDate":"2021-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73397210","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
Influence of lattice deformations on the electronic structure of the molybdenum disulfide monolayer 晶格变形对二硫化钼单层电子结构的影响
Doklady Akademii nauk Pub Date : 2021-02-23 DOI: 10.29235/1561-8323-2021-65-1-40-45
A. Krivosheeva, V. Shaposhnikov, V. Borisenko
{"title":"Influence of lattice deformations on the electronic structure of the molybdenum disulfide monolayer","authors":"A. Krivosheeva, V. Shaposhnikov, V. Borisenko","doi":"10.29235/1561-8323-2021-65-1-40-45","DOIUrl":"https://doi.org/10.29235/1561-8323-2021-65-1-40-45","url":null,"abstract":"The possibilities and conditions for modifying the band gap and the behavior of interband transitions under compressive and tensile strains in the crystal lattice of a molybdenum disulfide monolayer have been determined by theoretical modeling. It is shown that depending on the value and direction of the strains the compound may be a direct-gap or indirect-gap semiconductor, and the conditions for such transformations are determined. The results demonstrate a potential use of the molybdenum disulfide monolayer in nanoelectronic devices of new generation in which controlled transport of charge carriers is possible","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"4 1","pages":"40-45"},"PeriodicalIF":0.0,"publicationDate":"2021-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72692930","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 reduced anisotropic unitary Whitehead groups of henselian division algebras which are either unramified or tamely ramified with commutative residue algebras 交换剩余代数非分枝或系分枝的henselian划分代数的约化各向异性酉Whitehead群
Doklady Akademii nauk Pub Date : 2021-02-22 DOI: 10.29235/1561-8323-2021-65-1-7-10
V. Yanchevskiĭ
{"title":"On reduced anisotropic unitary Whitehead groups of henselian division algebras which are either unramified or tamely ramified with commutative residue algebras","authors":"V. Yanchevskiĭ","doi":"10.29235/1561-8323-2021-65-1-7-10","DOIUrl":"https://doi.org/10.29235/1561-8323-2021-65-1-7-10","url":null,"abstract":"Reduced anisotropic unitary Whitehead groups of henselian division algebras, which are either unramified or tamely ramified with commutative residue algebra, are computed.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"30 1","pages":"7-10"},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86066954","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
Concept of transferring control to a driver in highly automated cars 在高度自动化的汽车中，将控制权移交给驾驶员的概念
Doklady Akademii nauk Pub Date : 2020-11-05 DOI: 10.29235/1561-8323-2020-64-5-624-631
V. Savchenko, S. Poddubko
{"title":"Concept of transferring control to a driver in highly automated cars","authors":"V. Savchenko, S. Poddubko","doi":"10.29235/1561-8323-2020-64-5-624-631","DOIUrl":"https://doi.org/10.29235/1561-8323-2020-64-5-624-631","url":null,"abstract":"From an interdisciplinary point of view, on the basis of a systematic approach, the concept of transferring control to a driver in highly automated vehicles was first formulated, which allows one to determine the potential possibility of regaining control of a highly automated car based on its awareness of the situational situation along the route of movement and monitoring of the current functional state, including readiness for emergency actions, and individual features of the driver. The classification of cross-modal information flows in highly automated and autonomous cars is presented. The definition of cross-modal interaction in highly automated vehicles is given, and the goal of analyzing heterogeneous information flows in on-board vehicle systems is formulated, where automatic analysis of heterogeneous information flows gives a synergistic effect. Examples of relevant driver information are provided. ","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"50 1","pages":"624-631"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73542943","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
Structural-rheological properties of systems based on polymeric hydrogels and anionic surfactants 基于聚合物水凝胶和阴离子表面活性剂的体系的结构流变性能
Doklady Akademii nauk Pub Date : 2020-11-05 DOI: 10.29235/1561-8323-2020-64-5-551-557
S. V. Bucha, Yu. V. Lipai, P. Vorobiev, D. V. Cherednichenko, A. Vorobiov, N. Krutko
{"title":"Structural-rheological properties of systems based on polymeric hydrogels and anionic surfactants","authors":"S. V. Bucha, Yu. V. Lipai, P. Vorobiev, D. V. Cherednichenko, A. Vorobiov, N. Krutko","doi":"10.29235/1561-8323-2020-64-5-551-557","DOIUrl":"https://doi.org/10.29235/1561-8323-2020-64-5-551-557","url":null,"abstract":"The effect of sodium dodecyl sulfate and sodium oleate on the structural-rheological properties of a dispersed hydrogel based on polyacrylic acid was studied. It was shown that the viscosity of hydrogel compositions with surfactants is higher than the viscosity of the individual components and increases with increasing temperature from 20 to 40 °C. Compositions with sodium oleate are non-Newton liquids and exhibit thixotropic properties.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"27 1","pages":"551-557"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79441526","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
In silico analysis of interaction of compounds, containing photoactivatable groups,with human CYP7 enzymes 含有光活化基团的化合物与人CYP7酶相互作用的计算机分析
Doklady Akademii nauk Pub Date : 2020-11-05 DOI: 10.29235/1561-8323-2020-64-5-558-566
Yaraslau U Dzichenka, M. Horetski, Y. Faletrov, A. Yantsevich, V. Shkumatov, S. Usanov
{"title":"In silico analysis of interaction of compounds, containing photoactivatable groups,with human CYP7 enzymes","authors":"Yaraslau U Dzichenka, M. Horetski, Y. Faletrov, A. Yantsevich, V. Shkumatov, S. Usanov","doi":"10.29235/1561-8323-2020-64-5-558-566","DOIUrl":"https://doi.org/10.29235/1561-8323-2020-64-5-558-566","url":null,"abstract":"In silico analysis of “protein–ligand” complexes of human CYP7 enzymes with modified borondipyrrometene (BODIPY) and steroids, containing photo-activated crosslinking groups, wasperformed in order to identify structural peculiarities of their interaction. It was found that BODIPY molecules and DHEA derivative with diazirine group are able to bind tightly with human steroid-hydroxylases. Binding affinity is comparable with corresponding values for essential ligands of the enzymes. Binding mode of the modified steroid corresponds to the binding mode of essential CYP7 ligands, so formation of hydroxylated products is possible. It was found that presence of both diazirine and NBD groups in a molecule significantly increases affinity of the compound in case of CYP7A1 and, especially, CYP7B1. Amino acid residues, located in a close proximity with photo-activated groups were detected, that can form covalent adducts with them. The obtained results can shed light on the mechanism of interaction of the compounds with recombinant human CYP7 enzymes in vitro. The results can also be used for the identification of modified amino acids of the proteins that are formed under photoactivation of the compounds in vitro.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"30 1","pages":"558-566"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80025723","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
Synthesis of mesoporous silica with ordered nanostructural morphology from natural quartz sand 以天然石英砂为原料合成纳米有序介孔二氧化硅
Doklady Akademii nauk Pub Date : 2020-11-05 DOI: 10.29235/1561-8323-2020-64-5-544-550
T. F. Kouznetsova, V. Agabekov, A. Ivanets, E. V. Karpinchik, J. Sauka
{"title":"Synthesis of mesoporous silica with ordered nanostructural morphology from natural quartz sand","authors":"T. F. Kouznetsova, V. Agabekov, A. Ivanets, E. V. Karpinchik, J. Sauka","doi":"10.29235/1561-8323-2020-64-5-544-550","DOIUrl":"https://doi.org/10.29235/1561-8323-2020-64-5-544-550","url":null,"abstract":"Silica with ordered nanostructured morphology characteristic of mesoporous molecular sieves with cubic packing of cylindrical pores and a three-dimensional porous structure is obtained from natural quartz sand. It was shown by X-ray diffraction, scanning electron microscopy, and low-temperature nitrogen adsorption-desorption that the obtained silica material is thermally stable, amorphous, consists of submicron grains, has a high specific surface area of 1396 m2/g, a pore volume of 0.780 cm3/g and an average diameter of 2.2 nm with a narrow size distribution of mesopores.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"23 1","pages":"544-550"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81440885","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
A closed-loop strategy in an optimal guaranteed control problem for a linear system 线性系统最优保证控制问题的闭环策略
Doklady Akademii nauk Pub Date : 2020-11-05 DOI: 10.29235/1561-8323-2020-64-5-519-525
Dz. A. Kastsiukevich, N. Dmitruk
{"title":"A closed-loop strategy in an optimal guaranteed control problem for a linear system","authors":"Dz. A. Kastsiukevich, N. Dmitruk","doi":"10.29235/1561-8323-2020-64-5-519-525","DOIUrl":"https://doi.org/10.29235/1561-8323-2020-64-5-519-525","url":null,"abstract":"This paper deals with an optimal control problem for a linear discrete system subject to unknown bounded disturbances with the control goal being to steer the system with guarantees to a given target set while minimizing a given cost function. We define an optimal control strategy with one correction time instant, meaning taking into account information about one future state of the object, and propose an efficient numerical method for constructing it.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"113 1","pages":"519-525"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87065369","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 Belarusian-Lithuanian borderlands of the 10–13th centuries: from Krevа to Kernavė 10 - 13世纪的白俄罗斯-立陶宛边境:从克列瓦耶到克纳夫斯
Doklady Akademii nauk Pub Date : 2020-11-05 DOI: 10.29235/1561-8323-2020-64-5-632-640
A. Dziarnovich
{"title":"The Belarusian-Lithuanian borderlands of the 10–13th centuries: from Krevа to Kernavė","authors":"A. Dziarnovich","doi":"10.29235/1561-8323-2020-64-5-632-640","DOIUrl":"https://doi.org/10.29235/1561-8323-2020-64-5-632-640","url":null,"abstract":"Traditional notions on the Belarusian-Lithuanian borderlands and the earlier Lithuania of the 10-13th c. are quite sketchy. In the public consciousness of a population of the historical Lithuania (“Lithuania in the narrow sense”) is significantly inferior in terms of its civilization development of neighboring Rus' and Poland. But already in the 13th century new impulses of state formation began from Lithuania at a time when the entire of the East Slavic region of Europe was in a deep crisis. The article analyzes the results of the latest archaeological and historical research of the four centers of the Belarusian-Lithuanian borderlands and the historical Lithuania in the 10-13th c.: Kreva, Halsany, Kemaй (Kernave), Vilnia (Vilnius). The significant presence of Slavic settlers influenced the existence of urban settlements with a clear administrative and sacred function among the Baltic pagan population of Lithuania in the 12th-14th centuries. On the example of Kreva and Kernave we can see the emergence of regional centers of Lithuania, the first of which is already in the 14th century it will be the domain of Alhierd (Olgierd) and Jagiello, and the second in the late 13th - early 14th centuries it will be the main residence of the Duke Trojdzien and perhaps of Vicien. Halsany become generic possession of the Halsanski princes and early modern town as and Kreva will develop in accordance with the process of urbanization (16-18th cc.). Kreva, Kernave and Vilnius can be described as the sacred center of the Balts. These observations allow us to consider the emergence of a new state, the Grand Duchy of Lithuania, as a result of the influence of the Slavic ethnos on the corresponding development of political and economic interests of Lithuanian elites, as well as ethno-cultural interaction.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"33 1","pages":"632-640"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86811743","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
Morphological-cultural and molecular genetic features of collection strains of mycoris mushrooms Phialocephala fortinii and Pezicula sp. 福氏菌和佩兹卡菌采集菌株的形态培养和分子遗传特征。
Doklady Akademii nauk Pub Date : 2020-11-05 DOI: 10.29235/1561-8323-2020-64-5-567-573
Ya. S. Kamelchuk, O. Baranov, P. S. Kiryanov, V. Padutov
{"title":"Morphological-cultural and molecular genetic features of collection strains of mycoris mushrooms Phialocephala fortinii and Pezicula sp.","authors":"Ya. S. Kamelchuk, O. Baranov, P. S. Kiryanov, V. Padutov","doi":"10.29235/1561-8323-2020-64-5-567-573","DOIUrl":"https://doi.org/10.29235/1561-8323-2020-64-5-567-573","url":null,"abstract":"A metagenomic analysis of the endophytic microflora of Vaccinium corymbosum L. and Vaccinium myrtillus L. root systems was carried out. Two dominant species of micromycetes forming ericoid mycorrhiza were identified – Phialocephala fortinii C. J. K. Wang & H. E. Wilcox and Pezicula sp. Tul. & C. Tul. Pure cultures of mycorrhizal fungi were prepared, a comprehensive morphological and genetic assay of the strains was carried out. Based on the results of genetic-taxonomic analysis, the assumption of the polyphyletic origin of species belonging to Phialocephala and Pezicula is confirmed.","PeriodicalId":11227,"journal":{"name":"Doklady Akademii nauk","volume":"26 1","pages":"567-573"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81528414","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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