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Comparison of extraction abilities of deep eutectic solvents and aqueous acid solutions for extraction of rare earths and transition metals

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Journal of Rare Earths 2024年第6期42卷 1157-1164,I0006页

作者： Svetlana Drogobuzhskaya margarita frolova Andrey Shishov Nikita Tsvetov Tananaev Institute of Chemistry-Subdivision of the Federal Research Centre《Kola Science Centre of the Russian Academy of Sciences》 18420926a AcademgorodokApatityRussia Murmansk State Technical University 183010Sportivnaja str.13MurmanskRussia Department of Analytical Chemistry Institute of ChemistrySaint Petersburg State UniversitySpbSU.1990347/9 Universitetskaya embSt.Petersburg Russia

In recent years,deep eutectic solvents have attracted increasing interest as effective extractants for the separation of both organic substances and metals from various ***-based deep eutectic solvents are most often used as extractants for the extraction of *** this work,for the first time,the extraction efficiency of transition metals and rare earth elements(Y,Zr,Nb,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Hf and Ta)from mining tailings and Na,K,Ca,Mg,Cu,Fe,Mn,Pb,Ba,Ni and Sr from biodiesel samples using acidic deep eutectic solvents and saturated aqueous solutions of the same acids(malonic,malic,tartaric and citric)is *** this,deep eutectic solvents based on acids and their aqueous saturated solutions were prepared and *** prepared mixtures were analyzed by IR spectroscopy to confirm the formation of eutectic *** such as the density and viscosity of the resulting mixtures were also investigated,as this can be of key importance for the efficiency of metal *** extraction of rare earth metals from mining tailings took a long time(up to several days),while the extraction of metals from fuel took no more than 30 *** emission spectral methods were used as an analysis *** is shown that the extraction efficiency with aqueous solutions is better than that with eutectic solvents,which casts doubt on the need for deep eutectic solvents use in this area.

关键词： Deepeutectic solvent Metal separation Elemental analysis Rare earth metals Biodiesel

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Investigation of the effect of hydrocarbons and monoesters in the gelators’composition on the properties of edible oleogel

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Grain & Oil Science and Technology 2024年第2期7卷 96-104页

作者： Yuliya frolova Roman Sobolev Varuzhan Sarkisyan Alla Kochetkova Federal Research Centre of Nutrition Biotechnology and Food Safety2/14 Ustyinsky ProyezdMoscow 109240Russia

Natural wax gelators have different compositions of compounds(hydrocarbons,wax esters,free fatty alcohols,and free fatty acids),which results in oleogels with varying *** maintain a consistent composition,the individual components can be added to the original wax *** content of hydrocarbons and wax esters greatly affects the structuring process of liquid edible oils with *** aim of this study was to evaluate the possibility of modifying the properties of beeswax as a gelling agent by adding hydrocarbons or monoesters to obtain oleogels with specific *** tests were conducted to assess the changes in the oleogel properties,such as color,microstructure,oil-binding capacity,thermal and textural *** research results have shown that the addition of the studied fractions has led to a significant change in all properties of *** initial size of oleogel crystals(7.29±1.80μm)changed after adding fractions,varying from 5.28μm to 12.58μm with hydrocarbons and from 9.95μm to 30.41μm with wax *** addition of 30%–50% hydrocarbons decreased the ability of the oleogels to bind oil and made them less firm compared to samples with 10%-20% *** 10%-20% monoesters increased the firmness of the oleogels,but this indicator decreased when their content was increased to 50%.The obtained data indicate that hydrocarbons and wax esters can be used for targeted correction of the gelling properties of beeswax.

关键词： Oleogel Beeswax Hydrocarbons Wax monoesters Component composition of gelator Textural properties Food

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A Postcolonial Perspective on the Evolution of National Identity in the Novels of Margaret Atwood

A Postcolonial Perspective on the Evolution of National Iden...

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作者： frolova Valentina 华中师范大学

学位级别：硕士

The question of national identity is one of the most contradictory ones in postcolonial era and postcolonial *** can be considered the most important issue due to the existence of the identity crisis in all postcolonial *** process of decolonization of the countries subjected to colonial rule triggered a remarkable movement towards restoration of the national identities of the newly freed *** wasn’t an *** phenomenon is explored in most of Margaret Atwood’s novels,yet it has never so far become the subject of a full-scale analysis throughout the author’s entire fictional *** study examines the process of Canadian national identity’s evolution and transformation,reflected in the novels of ***,through the prism of postcolonial critical *** primary material consists of seven novels:The Edible Woman（1969）,Surfacing（1972）,Lady Oracle（1976）,Life Before Man（1979）,Cat’s Eye（1988）,The Robber Bride（1993）and The Blind Assassin（2000）.Grounding arguments in the works of theorists in the sphere of national identity including Benedict Anderson’s study on national identity’s construction,Northrop Frye’s study on Canadian identity crisis,Edward Said’s Orientalism,***’s research on the production of discriminatory identities the researcher attempts to conduct a deeper analysis of ***’s views on the problem of national identity’s acquisition by *** thesis’s methodological basis lies in postcolonial literary criticism and new historical literary *** of these approaches are necessary in order to reach an adequate understanding of the author’s philosophical and ideological position,that is,the influence of the question of the national identity’s recreation in a postcolonial society on Atwood’s literary *** study also examines the reverse process,*** influence of ***’s novels on the process of strengthening the national identity of the Canadian *** thesis is divided into s

关键词： Canadian literature Margaret Atwood identity formation national identity postcolonial critical theory new historicism

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Supersonic Flows with Nontraditional Transport Described by Kinetic Methods

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Communications in Computational Physics 2012年第4期11卷 1334-1346页

作者： V.V.Aristov A.A.frolova S.A.Zabelok Dorodnicyn Computing Center of Russian Academy of Sciences Vavilova str.40Moscow119333Russia

A new class of supersonic nonequilibrium flows is studied on the basis of solving the Boltzmann andmodel kinetic equations with the aim to consider new nonlinear structures in open systems and to study anomalous transfer properties in relaxation *** Unified Flow Solver is applied for numerical *** gases and gases with inner degrees of freedom are *** experimental data related to the influence of the so-called optical lattices on the supersonic molecular beams are considered and numerical analysis of the nonequilibrium states obtained on this basis is *** nonuniform relaxation problem with these distributions is simulated numerically and anomalous transport is *** conditions for strong changes of the temperature in the anomalous transfer zones are discussed and are realized in computations.

关键词： The Boltzmann equation anomalous transport relaxation zones

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Two lineages of bivalve transmissible neoplasia affect the blue mussel Mytilus trossulus Gould in the subarctic Sea of Okhotsk

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Current Zoology 2023年第1期69卷 91-102页

作者： Maria Skazina Nelly Odintsova Mariia Maiorova Lidia frolova Irina Dolganova Kira Regel Petr Strelkov Department of Applied Ecology St Petersburg State UniversitySt.Petersburg 199034Russia National Scientific Center of Marine Biology Far Eastern Branch of the Russian Academy of SciencesVladivostok 690041Russia Institute of the Biological Problems of the North Far Eastern Branch of the Russian Academy of SciencesMagadan 685000Russia Laboratory of Monitoring and Conservation of Natural Arctic Ecosystems Murmansk Arctic State UniversityMurmansk 183038Russia

There are increasing findings of the bivalve transmissible neoplasia derived from the Pacific mussel Mytilus trossulus(MtrBTN)in populations of different Mytilus species *** Subarctic is an area where this disease has not yet been sought despite the fact that Mytilus *** widespread there,and *** itself is a boreal *** used flow cytometry of the hemolymph,hemocytology,and histology to diagnose disseminated neoplasia in a sample of *** from Magadan in the subarctic Sea of *** was identified in 11 of 214 mussels *** mtDNA COI sequencing,we revealed genotypes identical or nearly identical to known MtrBTN ones in the hemolymph of most of the diseased *** MtrBTN evolutionary lineages have been identified,the widespread MtrBTN2,and MtrBTN1,so far only known from *** in British Columbia on the other side of the Pacific from *** addition,MtrBTN2 was represented by 2 common diverged mtDNA *** conclusions were confirmed for selected cancerous mussels by molecular cloning of COI and additional nuclear and mtDNA *** the background of high genetic diversity,different cancers were similar in terms of ploidy(range 4.0–5.8 n)and nuclear-to-cell *** study provides the first description of neoplasia and MtrBTN in mussels from the Sea of Okhotsk and from the Subarctic,of both MtrBTN1 and MtrBTN2 in the same mussel population,and the first direct comparison between these transmissible cancers.

关键词： disseminated neoplasia molecular identification Mytilus Pacific subarctic transmissible cancer

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Neo-Kantian Philosophy of Law of Novgorodtsev and Marxism

Neo-Kantian Philosophy of Law of Novgorodtsev and Marxism

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作者： Elizaveta frolova Faculty of Law Lomonosov Moscow State University

The article gives an assessment of Marxist ideology in the philosophy of law of the Russian representative of the Baden school of Novgorodtsev's neo-Kantianism. The evolution of classical Marxism at the turn of the 19 th and 20 th centuries in the interpretation of Novgorodtsev is shown. On the example of Novgorodtsev's concept and the political theory of Marxism, the ratio of the neo-Kantian philosophy of law in Russia at the end of the 19 th and beginning of the 20 th century and the sociology of law and the state are presented. The author draws a conclusion about the conceptual divergence of the neo-Kantian philosophy of law with Marxist ideology.

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Foreign Investments in a Region as a Factor Influencing Economic Structure

Foreign Investments in a Region as a Factor Influencing Econ...

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作者： N.S.frolova Khabarovsk State Academy of Economics and Law

This article considers application of foreign capital in Russian economy from the perspective of possible adaptation of valuable experience of business administration and technological *** is also important to discuss direction of foreign investments into Russian regions for the purpose of diversification of their economic structure.

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不同土壤中重金属浓度样本容量的确定

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中国水土保持 2002年第7期 21-22页

作者： L.L.frolova,A.G.Zakirov Kazan State University Kazan Institute of Ecology of TAS Russia

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不同土壤中重金属浓度样本容量的确定

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中国水土保持 2002年第7期 17-18页

作者： L.L.frolova A.G.Zakirov Kazan State University Kazan Institute of Ecology of TAS Russia

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快速升温下的北极径流变化及其驱动机制综述

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地理学报 2023年第11期78卷 2718-2734页

作者：王平黄其威刘诗奇于静洁张一驰王田野白冰 POZDNIAKOV Sergey P frolova Natalia L 刘昌明中国科学院地理科学与资源研究所中国科学院陆地水循环及地表过程重点实验室北京100101 中国科学院大学北京100049 郑州大学水利与交通学院郑州450001 莫斯科国立大学水文地质系俄罗斯莫斯科119899 莫斯科国立大学陆地水文系俄罗斯莫斯科119991

全球快速升温背景下,多年冻土广泛发育的北极流域水文情势发生显著变化,不仅改变了该地区的生态环境,也对全球气候系统和社会经济带来了深远影响。因此,北极流域水文过程研究已成为当前国际科学界关注的前沿热点问题。本文通过梳理国内... 详细信息

全球快速升温背景下,多年冻土广泛发育的北极流域水文情势发生显著变化,不仅改变了该地区的生态环境,也对全球气候系统和社会经济带来了深远影响。因此,北极流域水文过程研究已成为当前国际科学界关注的前沿热点问题。本文通过梳理国内外相关文献,系统回顾并总结了北极主要流域的径流时空变化及其驱动机制的研究成果与最新进展;详细分析了欧亚大陆和北美地区的径流变化规律与时空差异;深入探讨了快速升温下降水变化(降水量、雨/雪组分比例)和冻土退化对北极流域径流的直接与间接作用机制。尽管当前北极水文研究在数据积累和科学认识方面取得了重要进展,但仍面临地面观测站点稀少以及气候、积雪/冻土、水文之间响应难以定量等挑战。因此,建立完善的北极流域观测网络并发展具有北极特色的寒区水文模型,是深入理解北极水系统快速变化的基础,也是应对北极地区水灾害风险和提升水资源管理能力的关键所在。

关键词：北极放大水文情势气候变暖冻土退化净降水

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