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On shear wave velocity in the top of the Earth’s inner core 地球内核顶部的横波速度
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884434-438
D. Krasnoshchekov, V. Ovtchinnikov, O. Usoltseva
{"title":"On shear wave velocity in the top of the Earth’s inner core","authors":"D. Krasnoshchekov, V. Ovtchinnikov, O. Usoltseva","doi":"10.31857/s0869-56524884434-438","DOIUrl":"https://doi.org/10.31857/s0869-56524884434-438","url":null,"abstract":"Analysis of PKIIKP waves reflected off the inner surface of the solid core boundary and recorded close to the antipode indicates the shear wave velocity in its top can be by 10-60% below 3.5 km/s envisaged by standard models of the Earth.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76122772","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
Geochemical environments of the Archean-Proterozoic 太古宙-元古代地球化学环境
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884403-407
V. Kuznetsov
{"title":"Geochemical environments of the Archean-Proterozoic","authors":"V. Kuznetsov","doi":"10.31857/s0869-56524884403-407","DOIUrl":"https://doi.org/10.31857/s0869-56524884403-407","url":null,"abstract":"In the Precambrian section, there is a change of Archean calcite carbonate rocks to magnesia and ferrous in the Proterozoic. This is correlated with the massive development of cyanobacteria, the absorption of which carbon dioxide and the generation of oxygen, led to a change in the acidic reduction conditions of Archaean alkaline oxidizing in the Proterozoic.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74666929","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
Modelling the attitude dynamics of small spacecraft with a magnetic attitude control system in three-axis stabilization mode 基于磁姿态控制系统的小型航天器三轴稳定姿态动力学建模
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884377-382
V. M. Kulkov, В М Кульков, Yu. G. Egorov, Ю Г Егоров, S. O. Firsyuk, С. О. Фирсюк, V. V. Terentyev, В В Терентьев, A. Shemyakov, А О Шемяков
{"title":"Modelling the attitude dynamics of small spacecraft with a magnetic attitude control system in three-axis stabilization mode","authors":"V. M. Kulkov, В М Кульков, Yu. G. Egorov, Ю Г Егоров, S. O. Firsyuk, С. О. Фирсюк, V. V. Terentyev, В В Терентьев, A. Shemyakov, А О Шемяков","doi":"10.31857/s0869-56524884377-382","DOIUrl":"https://doi.org/10.31857/s0869-56524884377-382","url":null,"abstract":"The problem of modeling the attitude-control modes of small spacecraft with the use of electromagnetic systems, interacting with the Earths magnetic field is considered. A small spacecraft angular motion mathematical model is developed. A control law for magnetic attitude control system of small spacecraft is formulated. Results of satellite with magnetic attitude control system movement numerical modelling are presented.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81094134","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 influence of the heating scheme of a heterogeneous drop on the characteristics of micro-explosion fragmentation 非均质液滴加热方式对微爆破片特性的影响
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884372-376
D. Antonov, A. Rebrov, P. Strizhak
{"title":"The influence of the heating scheme of a heterogeneous drop on the characteristics of micro-explosion fragmentation","authors":"D. Antonov, A. Rebrov, P. Strizhak","doi":"10.31857/s0869-56524884372-376","DOIUrl":"https://doi.org/10.31857/s0869-56524884372-376","url":null,"abstract":"According to the experimental results, a comparison of sizes of child-droplets after micro-explosion of drop based on water and diesel has been made. Convective, conductive, or radiative heat exchange has been dominated. The temperature of the medium and the relative volume concentration of the flammable liquid have been varied in ranges: 100-450 С, 10-90 vol. %. The ratios of the sizes of the formed drops to the initial ones have been established. The conditions, which make it possible to increase the total evaporation surface area of a liquid by tens of times, are shown.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89874856","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
Regularities of the variability of large-scale sea ice drift structures in the Arctic Ocean (based on satellite data 1978-2017) 北冰洋大尺度海冰漂移结构的变化规律(基于1978-2017年卫星数据)
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884439-442
V. Volkov, A. Mushta, D. Demchev
{"title":"Regularities of the variability of large-scale sea ice drift structures in the Arctic Ocean (based on satellite data 1978-2017)","authors":"V. Volkov, A. Mushta, D. Demchev","doi":"10.31857/s0869-56524884439-442","DOIUrl":"https://doi.org/10.31857/s0869-56524884439-442","url":null,"abstract":"Based on the 39-year satellite observation data series (1978-2017), three main types of large-scale sea-ice drift field in the Arctic Ocean (AO), characteristic of the winter season, were identified. The types of atmospheric circulation that form the structure of the drift fields are identified, the mechanism of the effect of changes in the drift fields on the interannual variations in the ice cover of the AO is described.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87650827","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
Microscopic fungi sorption of chemical elements from multicomponent solution 显微真菌从多组分溶液中吸收化学元素
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884425-428
L. M. Pavlova, Л М Павлова, L. Shumilova, Л П Шумилова, V. Radomskaya, В. И. Радомская, A. Sorokin, А П Сорокин, V. Ivanov, Владимир Иванов
{"title":"Microscopic fungi sorption of chemical elements from multicomponent solution","authors":"L. M. Pavlova, Л М Павлова, L. Shumilova, Л П Шумилова, V. Radomskaya, В. И. Радомская, A. Sorokin, А П Сорокин, V. Ivanov, Владимир Иванов","doi":"10.31857/s0869-56524884425-428","DOIUrl":"https://doi.org/10.31857/s0869-56524884425-428","url":null,"abstract":"The data of micromycetes species and strain specificity in the process of toxic elements extracting from multicomponent solutions were obtained as results of modal experiments. The results also indicate the capability of biogenic mineral formation in organic strata.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89246942","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 interaction effect of bacterial cellulose with gold nanoparticles obtained by metal-vapor synthesis 细菌纤维素与金属蒸汽合成金纳米颗粒的相互作用效果
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884391-396
M. Rubina, М.С. Рубина, M. Pigaleva, М А Пигалёва, I. Butenko, И Е Бутенко, A. Budnikov, А. В. Будников, A. Naumkin, А. В. Наумкин, T. Gromovykh, Т.И. Громовых, S. Lutsenko, Сергей Викторович Луценко, A. Vasil'kov, А.Ю. Васильков
{"title":"The interaction effect of bacterial cellulose with gold nanoparticles obtained by metal-vapor synthesis","authors":"M. Rubina, М.С. Рубина, M. Pigaleva, М А Пигалёва, I. Butenko, И Е Бутенко, A. Budnikov, А. В. Будников, A. Naumkin, А. В. Наумкин, T. Gromovykh, Т.И. Громовых, S. Lutsenko, Сергей Викторович Луценко, A. Vasil'kov, А.Ю. Васильков","doi":"10.31857/s0869-56524884391-396","DOIUrl":"https://doi.org/10.31857/s0869-56524884391-396","url":null,"abstract":"In the present work, a promising method was proposed for the formation of new functional nanocomposite materials based on bacterial cellulose and Au nanoparticles obtained by a biocompatible and environmentally friendly metal vapor synthesis. The structure and composition of the composite films surface were studied by XPS, SEM, and IR spectroscopy. It was determined that Au nanoparticles effectively chemisorb the bacterial cellulose nanofibrils forming nanoparticles with a size of about 25 nm with a metal core-hydrocarbon shell structure.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81791690","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
Immunoistochemical and morphological study of periodont tissues when predicting the results of dental implantation in patients with chronic parodontitis 预测慢性牙周炎患者种植结果的牙周组织免疫组织化学和形态学研究
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884452-456
A. A. Kulakov, E. Kogan, T. V. Brailovskaya, A. Vedyaeva, N. Zharkov
{"title":"Immunoistochemical and morphological study of periodont tissues when predicting the results of dental implantation in patients with chronic parodontitis","authors":"A. A. Kulakov, E. Kogan, T. V. Brailovskaya, A. Vedyaeva, N. Zharkov","doi":"10.31857/s0869-56524884452-456","DOIUrl":"https://doi.org/10.31857/s0869-56524884452-456","url":null,"abstract":"A morphological and immunohistochemical study of 24 gums biopsies was conducted in 19 patients aged 35-60 years with a diagnosis of partial secondary edentulous, chronic generalized periodontitis of moderate and severe degree (14 patients), and also without pathological changes in the periodontal disease (5 patients), who underwent dental implantation. Immunohistochemical reactions with antibodies to Ki-67, VEGF, SMA were performed on serial paraffin sections. It has been established that chronic periodontitis is characterized by a higher proliferative activity of the epithelium, which reflects its hyperplastic changes, as well as a lower content of SMA positive cells and the practical absence of the formation of privascular couplings from SMA-positive cells that are associated in tissues with growth zones, which indirectly indicates reduced tissue regenerative capacity. Therefore, in the case of the operation of dental implantation requires additional treatment aimed at anti-inflammatory and pro-regenerative effects.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86950016","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 novel element in the mechanism of endogenous regulation of depressive-like states 抑郁样状态内源性调节机制中的新元素
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884443-445
T. Garibova, Таисия Леоновна Гарибова, T. Gudasheva, Татьяна Александровна Гудашева, S. Seredenin, Сергей Борисович Середенин
{"title":"The novel element in the mechanism of endogenous regulation of depressive-like states","authors":"T. Garibova, Таисия Леоновна Гарибова, T. Gudasheva, Татьяна Александровна Гудашева, S. Seredenin, Сергей Борисович Середенин","doi":"10.31857/s0869-56524884443-445","DOIUrl":"https://doi.org/10.31857/s0869-56524884443-445","url":null,"abstract":"It was shown previously that cyclo-prolylglycine, an endogenous neuropeptide, is a positive AMPA receptor modulator and is able to increase the content of BDNF in neurons. In the present work it was shown that cyclo-prolylglycine at a dose of 1 mg/kg with subchronic intraperitoneal administration reduces the time of animal immobility to passive control, from 167.6 to 83.6 s on the 12th day of the experiment using the model of learned helplessness in rats. That indicates the presence of antidepressant-like activity. The results of the study allow us to consider that cyclo-prolylglycine is a link in the physiological regulation of a depressive-like state.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82990440","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
New minimal 87SR/86SR values in biogenic carbonates of the Permian of the Omolon massif (North-Eastern Asia) 东北亚欧莫龙地块二叠系生物碳酸盐岩87SR/86SR最小值的研究
Доклады Академии наук Pub Date : 2019-10-10 DOI: 10.31857/s0869-56524884397-402
A. Biakov, А.С. Бяков, I. V. Brynko, И. В. Брынько, D. Bond, П Г Бонд, J. Harvey, Я Харви, N. Goryachev, Н.А. Горячев, I. L. Vedernikov, И.Л. Ведерников, T. Filimonova, Т В Филимонова
{"title":"New minimal 87SR/86SR values in biogenic carbonates of the Permian of the Omolon massif (North-Eastern Asia)","authors":"A. Biakov, А.С. Бяков, I. V. Brynko, И. В. Брынько, D. Bond, П Г Бонд, J. Harvey, Я Харви, N. Goryachev, Н.А. Горячев, I. L. Vedernikov, И.Л. Ведерников, T. Filimonova, Т В Филимонова","doi":"10.31857/s0869-56524884397-402","DOIUrl":"https://doi.org/10.31857/s0869-56524884397-402","url":null,"abstract":"For the first time very low values (up to 0,706707) of the ratio 87Sr/86Sr were recorded in the biogenic carbonates of the Omolon massif (Northeast Asia) of the Capitanian age. These results are in good agreement with previously obtained data on limestones in Japan (Kani et al., 2013; 2018). In general, the strontium ratio curve constructed by us repeats the well-known world trend, differing by its somewhat underestimated (by an average of 0,000-0,0008) its values. The Capitanian strontium minimum can be associated with the entry into the ocean of significant amounts of lightweight femic strontium due to a sharp increase in paleospreading. The maximum values of the strontium ratio, obtained from the middle part of the Intomodesma evenicum bivalve Subzone are 0,706986, which corresponds to the upper part of the Wuchiapingian stage.","PeriodicalId":24047,"journal":{"name":"Доклады Академии наук","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86567585","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
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