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Hydrocarbon Raw Materials:New Technologies

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地学前缘 2009年第S1期16卷 135-136页

作者： Evgeny Tropnikov olga kotova Institute of Geology of Komi SC UB of RAS

Recently the increased interest to the researches of natural organic substance is ***,the organic substance is the basic natural generator and source of carbon-containing resources;secondly,it is the defining factor o... 详细信息

关键词： hydrocarbon raw diamond-like carbon laser radiation

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川北硬质岩沥青液相碳化及热解产物特性

非金属矿 2023年第6期46卷 1-6页

作者：陈帅全孙仕勇李正伟刘瑾 Golubev Yevgeny Aleksandrovich kotova olga Borisovna 林森西南科技大学环境与资源学院固体废物处理与资源化教育部重点试验室四川绵阳621010 西南科技大学非金属矿产地质及其开发利用四川省高等学校重点试验室四川绵阳621010 俄罗斯科学院乌拉尔分院科米科学中心尤什金地质研究所俄罗斯瑟克特夫卡尔167982

为探究川北硬质岩沥青的热解特性,以及液相碳化过程中碳化温度和碳化时间对孔隙结构及元素成分等的影响,以广元岩沥青为原料,采用液相碳化法制备了沥青基多孔碳材料并进行分析。热重测试结果表明,岩沥青主要失重温度区间为400~600℃,最... 详细信息

为探究川北硬质岩沥青的热解特性,以及液相碳化过程中碳化温度和碳化时间对孔隙结构及元素成分等的影响,以广元岩沥青为原料,采用液相碳化法制备了沥青基多孔碳材料并进行分析。热重测试结果表明,岩沥青主要失重温度区间为400~600℃,最大失重速率温度为450℃,在1000℃时其残碳率为56.35%,升高碳化温度和延长碳化时间均能促进岩沥青热解和缩聚反应的进行。随着岩沥青中可挥发性成分的分解,稠环大分子趋向定向排列,其芳香性增加,极性降低,表面活性基团减少,比表面积增加,而过高的碳化温度和过长碳化时间会使所制材料的孔隙结构塌陷,造成比表面积降低。比表面积测试表明,所制ASUK4-2样品具有最大比表面积365.14 m^(2)/g,各样品的氮气吸附-脱附等温线均属于Ⅱ型,存在典型的H3滞后环,材料孔径分布以介孔为主,并存在少量大孔和微孔。本研究可为天然岩沥青碳化制备新型碳材料的高值化开发利用提供参考依据。

关键词：岩沥青碳化温度碳化时间热解比表面积

铁氨基黏土-葡萄糖氧化酶纳米复合催化剂的构筑及多酶级联反应研究

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高等学校化学学报 2021年第3期42卷 803-810页

作者：李柳孙仕勇吕瑞 GOLUBEV Yevgeny Aleksandrovich 王可董发勤段涛 kotova olga Borisovna kotova Elena Leonidovna 西南科技大学环境与资源学院绵阳621000 俄罗斯科学院乌拉尔分院科米科学中心尤什金地质研究所俄罗斯瑟克特夫卡尔167982 西南科技大学国防科学技术学院绵阳621000 圣彼得堡国立矿业大学俄罗斯圣彼得堡199106

以铁氨基黏土(FeAC)为载体,通过共价交联固定葡萄糖氧化酶(GO_(x)),构筑了铁氨基黏土-葡萄糖氧化酶纳米复合催化剂(FeAC-GO_(x)).利用FeAC的过氧化物酶活性,与GO_(x)结合进行级联反应,可催化葡萄糖转化为过氧化氢并产生显色反应;采用扫... 详细信息

以铁氨基黏土(FeAC)为载体,通过共价交联固定葡萄糖氧化酶(GO_(x)),构筑了铁氨基黏土-葡萄糖氧化酶纳米复合催化剂(FeAC-GO_(x)).利用FeAC的过氧化物酶活性,与GO_(x)结合进行级联反应,可催化葡萄糖转化为过氧化氢并产生显色反应;采用扫描电子显微镜(SEM)、X射线衍射(XRD)和傅里叶变换红外光谱(FTIR)对FeACGO_(x)进行了形貌和结构表征,并评价了其酶动力学参数、催化稳定性和重复使用性等.结果表明,GO_(x)的固定化率可达到76.4%,所构筑的纳米结构酶复合体系具有高效的级联催化能力.与天然酶体系相比,FeAC-GO_(x)具有更优异的温度和pH耐受性,且在重复使用6次后,酶催化活性无明显降低.该体系不仅为新型葡萄糖传感器的开发奠定了基础,还为多酶级联纳米结构酶的构筑提供了新思路.

关键词：铁氨基黏土葡萄糖氧化酶固定化酶级联反应

K^(+) channel-mediated retarded maturation of interneurons and its role in neurodevelopmental disorders

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Neural Regeneration Research 2024年第7期19卷 1403-1404页

作者： Kaizhen Li Daria Savitska olga Garaschuk Laboratory of Systems Neuroscience Department of PhysiologyUniversity of BernBernSwitzerland Institute of Physiology Department of NeurophysiologyEberhard Karls University of TübingenTübingenGermany

De novo mutations in genes encoding K^(+)channels are implicated in many severe neurodevelopmental ***,mutations in KCNA2,encoding the Shaker-type voltage-gated K^(+)channel Kv1.2,and KCNJ2,encoding the inwardly rectifying K^(+)channel Kir2.1,associate with focal and generalized epilepsies,brain atrophy,autism,ataxia and hereditary spastic paraplegia(Syrbe et al.,2015;Masnada et al.,2017;Cheng et al.,2021).

关键词： disorders atrophy

Averaged Dynamics of Fluids near the Oscillating Interface in a Hele-Shaw Cell

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Fluid Dynamics & Materials Processing 2024年第4期20卷 847-857页

作者： Anastasia Bushueva olga Vlasova Denis Polezhaev Laboratory of Vibrational Hydromechanics Perm State Humanitarian Pedagogical UniversityPerm614990Russia

The steady flow in a Hele-Shaw cell filled with fluids with a high viscosity contrast in the presence of fluid oscillations is experimentally *** control of oscillatory dynamics of multiphase systems with interfaces is a challenging technological *** consider miscible(water and glycerol)and immiscible(water and high-viscosity silicone oil PMS-1000)fluids under subsonic oscillations perpendicular to the *** show that the interface shape depends on the amplitude and frequency of *** interface is undisturbed only in the absence of *** small amplitudes,the interface between water and glycerol widens due to *** the critical amplitude is reached,the interface becomes unstable to the fingering instability:Aqueous fingers penetrate the high-viscosity glycerol and induce intensive mixing of miscible fluids and associated decay of the *** the disappearance of the fingers,the interface takes a U-shape in the central part of the cell.A similar effect is observed for immiscible fluids:The oscillating interface tends to bend to the side of a high-viscosity ***,when the critical amplitude is reached,the fingering instability arises at the convex *** paper focuses on the causes of bending of the initially undisturbed interface between miscible or immiscible *** this purpose,we measure the steady flow velocity near the interface and in the bulk of a high-viscosity fluid using Particle Image Velocimetry(PIV).

关键词： Hele-Shaw cell oscillations steady flow miscible fluids immiscible fluids interface

Minerals of Bauxites and Residues: Problems of Processing and Enrichment (Russia)

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矿物学报 2013年第S1期33卷 70-70页

作者： olga kotova Galina Gasaleeva Aleksandr Vakhrushev Institute of Geology Komi SC UB RAS SyktyvkarRussia OJSC Uralmekhanobr EkaterinburgRussia

The complex of mineralogical methods was developed to obtain reliable data about mineral composition of bauxites and new crystal-chemical information (the whole cycle of used chemical elements, methods of residue utilization, position of residue tails in dump pits). Natural and technogenic structures were studied as sources of necessary chemical elements and useful properties.

关键词： mineral bauxites mineral residues processing and enrichment of bauxites and residues

Environmental Impact Assessment of Onshore Wind Farms in the Region of Central Greece Using a Modified RIAM Method

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Journal of Environmental & Earth Sciences 2024年第1期6卷 71-82页

作者： olga Korozi Dimitra G.Vagiona Department of Spatial Planning and Development Aristotle University of ThessalonikiThessaloniki 54124Greece

Wind energy is one of the most basic forms of renewable energy,which shows an increasing rate of development worldwide and also at the European ***,this rapid deployment of wind farms makes the need for an impact assessment of this type of projects on the natural and man-made environment *** present paper aims to identify and assess the environmental impacts of wind farm projects in the Region of Central Greece.A modified Rapid Impact Assessment Matrix(RIAM)method is used for this *** methodology includes the identification of the existing onshore wind farm projects in the study area,the appropriate modifications of the RIAM method to respond to the characteristics of the projects and the study area,the qualitative assessment of their potential impacts during construction and operational phases and the computation of the Environmental Performance Grade(EPG)of projects based on the pro-posed modified RIAM *** results reveal that although there are some slight negative impacts on the natural environment of the study area,the examined wind farms contribute positively both to the atmosphere and to the socio-economic environment of the *** study extends the potential for using RIAM as a tool in environmental impact assessment studies of renewable energy projects.

关键词： Environmental impact assessment Environmental components Region of central Greece Rapid impact assessment matrix(RIAM) Environmental performance grade(EPG)

Detection and evaluation of different morphological forms of Mycoplasma hominis in human semen

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Asian Journal of Andrology 2024年第1期26卷 71-76页

作者： Elizaveta Bragina Tatyana Sorokina Avtandil Chogovadze Yulia Shevchenko Vyacheslav Chernykh olga Barkhatova Irina Rakovskaya Research Centre for Medical Genetics Moscow 115522Russia A.N.Belozersky Institute of Physico-Chemical Biology Lomonosov Moscow State University Moscow 119992Russia Reprolab Limited Liability Company Moscow 119333Russia N.I.Pirogov Russian National Research Medical University Moscow 117997Russia Federal Government Budgetary Institution"National Research Center for Epidemiology and Microbiology Named after Honorary Academician N.F.Gamaleya of the Ministry of Health of the Russian Federation" Moscow 123098Russia

Recently discovered microcolonial forms of Mycoplasma hominis(***)and their impact on human spermatogenesis are *** spermatozoa of 125 fertile men(sperm donors;from Reprobank[Reproductive Tissue Bank,Moscow,Russial)and of 93 patients with fertility problems(from the Federal State Budgetary Institution"Research Centre for Medical Genetics[RCMG]",Moscow,Russia)were *** colonies of *** and microcolonies were detected by molecular biological methods,culture of bacteria,and transmission electron *** unique structure of microcolonial cells,in which the cytoplasmic cylinder is surrounded by concentric electron-dense and electron-light layers with a periodicity of 12-14 nm,and the ability of microcolonial cells to attach to spermatozoa are *** patients with lower sperm quality,microcolonies of *** were detected 2.5 times more frequently than classical *** detection of microcolonies in the ejaculate and the frequent isolation of microcolonies from sperm samples of patients with fertility problems suggest that microcolonial cells may be one cause of infertility.

关键词： ejaculate fertility Mycoplasma hominis spermatogenesis transmission electron microscopy

Aqueous electrochemical delithiation of cathode materials as a strategy to selectively recover lithium from waste lithium-ion batteries

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Journal of Energy Chemistry 2024年第1期88卷 144-153,I0004页

作者： Pier Giorgio Schiavi Andrea Giacomo Marrani olga Russina Ludovica D’Annibale Francesco Amato Francesca Pagnanelli Pietro Altimari Department of Chemistry Sapienza University of RomePiazzale Aldo Moro n.500185 RomeItaly

Lithium recovery from end-of-life Li-ion batteries(LIBs)through pyro-and hydrometallurgical recycling processes involves several refining stages,with high consumption of reagents and energy.A competitive technological alternative is the electrochemical oxidation of the cathode materials,whereby lithium can be deintercalated and transferred to an electrolyte solution without the aid of chemical extracting *** article investigates the potential to selectively recover Li from LIB cathode materials by direct electrochemical extraction in aqueous *** process allowed to recovering up to 98%of Li from high-purity commercial cathode materials(LiMn_(2)O_(4),LiCoO_(2),and Li Ni_(1/3)Mn_(1/3)Co_(1/3)O_(2))with a faradaic efficiency of 98%and negligible co-extraction of Co,Ni,and *** process was then applied to recover Li from the real waste LIBs black mass obtained by the physical treatment of electric vehicle battery *** black mass contained graphite,conductive carbon,and metal impurities from current collectors and steel cases,which significantly influenced the evolution and performances of Li electrochemical ***,due to concomitant oxidation of impurities,lithium extraction yields and faradaic efficiencies were lower than those obtained with high-purity cathode *** oxidation was found to occur within the voltage range investigated,but it could not quantitatively explain the reduced Li extraction *** fact,a detailed investigation revealed that above 1.3 V ***/Ag Cl,conductive carbon can be oxidized,contributing to the decreased Li *** on the reported experimental results,guidelines were provided that quantitatively enable the extraction of Li from the black mass,while preventing the simultaneous oxidation of impurities and,consequently,reducing the energy consumption of the proposed Li recovery method.

关键词： Lithium recovery Lithium-ion batteries recycling Electrochemical lithium extraction Lithium selective Extraction