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Differences in Trace Element Content between Non-Indigenous Farmed and Invasive Bivalve Mollusks of the South African Coast

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American Journal of Analytical Chemistry 2015年第11期6卷 886-897页

作者： Dmitry F. pavlov Jacques Bezuidenhout marina V. Frontasyeva Zoya I. Goryainova I. D. Papanin Institute of the Biology of Inland Waters Borok Russian Federation Faculty of Military Science Physics Department Stellenbosch University Saldanha South Africa Joint Institute for Nuclear Research Moscow Region Russian Federation

contents of 23 trace elements (Sc, V, Cr, Mn, Fe, Co, Zn, As, Se, Br, Rb, Sr, Mo, Ag, Sb, I, Ba, La, Ce, Sm, Eu, Hf, Ta) were quantitatively determined in soft tissues and shells of mass non-indigenous bivalve mussels—farmed Pacific oysters (Crassostrea gigas) and farmed and wild invasive Mediterranean mussels (Mytilus galloprovincialis) at the Atlantic coast of South Africa. The study revealed that the contents of the majority of elements in the soft tissues of both species were higher than those in the shells. The tissues of wild invasive Mediterranean mussels contain higher levels of a range of trace elements comparing to farmed mussels. The tissues of Pacific oysters contain much higher levels of almost all elements studied compared to the tissues of Mediterranean mussels. Higher content of zinc in the mussels and oysters from Saldanha Bay may evidence anthropogenic pollution of the bay’s ecosystem by this metal, which necessitates continued monitoring of levels of potentially toxic metals. Both alien species, and especially Pacific oysters, may serve as reliable biomonitors for trace elements in marine ecosystems. Both species are rich in essential elements and provide nutritionally-valuable seafoods.

关键词： Invasive Bivalve Mollusks Chemical Composition Crassostrea gigas Mytilus galloprovincialis Aquaculture Water Quality South Africa

Intake of Cl, Br, I, Se in Human Body with Food in Central Regions of the European Part of Russia

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Food and Nutrition Sciences 2015年第1期6卷 168-178页

作者： Anatoly V. Gorbunov Sergey M. Lyapunov marina Frontasyeva Sergey S. pavlov Geological Institute of the Russian Academy of Sciences Moscow Russia Frank Laboratory of Neutron Physics Joint Institute for Nuclear Research Dubna Russia

Since most of the central regions of the European part of Russia are considered selenium and iodine deficient, the assessment of modern real consumption of chlorine, bromine, iodine and selenium by population of these regions with different diets is an important constituent part of medical monitoring. In this paper, a brief analysis of the impact of these elements on the human body is given. A number of consumed foodstuffs in different food rations (diets) were assessed. Six selected basic food rations, which most fully reflect the specific features of nutrition in the Russian Federation, were chosen. The analysis of the concentration of chlorine, bromine, iodine and selenium in a wide range of food and agricultural products was carried out. The daily intake of these elements in the human body from the selected diets was calculated. A comparison of the real income of chlorine, bromine, iodine and selenium in the human body with a physiologically needed intake was performed. It is proposed to use the coefficient of Kr, which is the ratio of actual intake of the element in the human body to physiologically needed intake. Based on this analysis assessed insufficient or excess supply of chlorine, bromine, iodine and selenium in the human body with these diets in the central regions of the European part of Russia was evaluated.

关键词： Trace Elements Intake Chlorine Bromine Selenium Iodine Foodstuffs Diets

Relationship between Structure and Thermodynamic Activity of Carbon Black

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Advances in Chemical Engineering and Science 2013年第1期3卷 74-77页

作者： A. M. Amdur V. V. pavlov Barnasan Purevsuren Lkhamsuren Munkhtuul Institute of Chemistry and Chemical Technology Mongolian Academy of Sciences Ulaanbaatar Mongolia Ural State Mining University Yekaterinburg Russia

The role of carbon black is especially important in cokeless metallurgy. Carbon black can be isolated at less hot zones (less than 720) in metallurgical ovens according to equation of Buduara: 2CO = C + CO2. The particles of carbon black obtained by the reaction of Buduara are characterizing with complicated open-work structure including globular amorphous parts and graphitized crystalline elements connected by crosspieses with size in nanometric range (0.1μm - 3 μm). The carbon black is characterizing with increased Gibbs’s energy and high kinetical activity because of it’s dispersed and amorphous structure.

关键词： Carbon Carbon Black Reduction Reaction Globular Amorphous Structure

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冷生风化作用对边坡稳定性影响(英文)

冰川冻土 2004年第S1期26卷 60-63页

作者： N.N. Grib V.M. Nikitin S.S. pavlov Technical Institute (Department) Yakutsk State University NerungryTown Sakha (Yakutiya) Republic RussiaTechnical Institute (Department) Yakutsk State University NerungryTown Sakha (Yakutiya) Republic RussiaTechnical Institute (Department) Yakutsk State University NerungryTown Sakha (Yakutiya) Republic Russia

The experiment shows that considerable influence on density rock properties are subjected by nival weathering conditions. The main parameter defining the rock suitability for solution various engineering and geological problems is its firmness limit on single axis *** firmness properties of sandstone being in absolutely dry condition for Kabakta suite at the beginning of investigation was 64.7 MPa, for Nerungri suite sandstones it was 48.7 MPa. The investigations showed how much the nival conditions of cryohypergenesis of rock sandstones in Kabakta and Nerungri suites have destructive influence in comparison with aquale and more over aerale conditions. In the aerale conditions sedimentary rock firmness of Kabakta suite decreased to 23.2 MPa, in aquale conditions to 16.5, and in the nivale conditions to 8.9 MPa. In Nerungri suite sandstones are according to 17.7 MPa, 11.1 MPa, and 6 MPa after 300 freezing and thawing cycles. The common sandstone firmness decrease of Kabakta suite was 25 %, of Nerungri suite it was 23.8%. Marlstone samples after 400 FTC decrease to 62% in the nivale conditions and to 33% in the aerale conditions. After 3～5 years of exploitation marlstone will destruct due to structural and textural inhomogenesis up to gruss, i.e. it will not meet the requirements of durability. Judging by the results of carried out experiment it should be concluded that by cryogenic weathering the sedimentary rocks (sandstones) and rocks with schistose lithogenic texture (marlstone) are subjected to disintegration. The primary rock samples firmness considerably influences on the disintegration rate.

关键词： weathering conditions sandstone firmness property

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A LETTER TO THE YOUTH

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求知导刊 2013年第10期 84-85页

作者： Ivan Petrovich pavlov

What would I wish for the young people of my motherland who dedicated themselves to science? First of *** this very important condition for fruitful scientific work I cannot speak without ***,consistency and again ***... 详细信息

关键词：小学生英语学习阅读知识课外阅读

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铅酸蓄电池二氧化铅极板的热钝化

蓄电池 1980年第2期 29-35页

作者： D.pavlov 苗莉

铅酸蓄电池正极板化成后,经水洗和干燥。当正极板在室温高于70℃的干燥窑内干燥时,就损失了部分能量。本文将这种现象叫做热钝化。热钝化是根据热钝化极板和未钝化极板在恒电流放电时的电位由线之间的差异来测定的。确定了热钝化与极板... 详细信息

铅酸蓄电池正极板化成后,经水洗和干燥。当正极板在室温高于70℃的干燥窑内干燥时,就损失了部分能量。本文将这种现象叫做热钝化。热钝化是根据热钝化极板和未钝化极板在恒电流放电时的电位由线之间的差异来测定的。确定了热钝化与极板的干燥温度、极板在H;SO;溶液中静置的时间、电流密度、热钝化极板在NaOH溶液中的预处理及充、放电的循环次数的关系。归根结底,热钝化是由于极板的非化学计算的PbOn腐蚀层、该层与活物质晶体接触处及活物质与孔内溶液接触处的半导体特性决定的。

关键词：极板电位曲线硫酸溶液 NaOH 放电时间干燥温度铅酸蓄电池铅蓄电池放电电流密度

Electrically-Conductive Composite Nanomaterial with Multi-Walled Carbon Nanotubes

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Materials Sciences and Applications 2013年第5期4卷 1-7页

作者： Levan Ichkitidze Vitally Podgaetsky Sergei Selishchev Eugenie Blagov Vyacheslav Galperin Yuri Shaman Alexander pavlov Eugenie Kitsyuk Institute of Nanotechnology of Microelectronics RAS Moscow Russia National Research University of Electronic Technology (MIET) Moscow Russia Scientific Manufacturing Complex “Technological Centre” Moscow Russia

Specific conductivity of the composite nanomaterial layers with micron and submicron dimensions, consisting of carboxymethyl cellulose (CMC) and multiwalled carbon nanotubes (MWCNT) was investigated. Ultradispersed aqueous suspension was deposited on soft (aluminum foil, plates made from polyester and polyimide, cotton fabric, office paper) and solid (coverslip, silicon wafers with silicon oxide layer) substrates by silk-screen printing. Electrical resistance was measured by four-probe method and by the method of square on surface from which the conductivity and conductivity per square of surface were calculated taking into account layer’s geometric dimensions. Specific conductivity of the layers with thickness range 0.5 - 5 μm was? ~1.2×104÷4×104 S/m, and max conductivity per square was ~ 0.2 S. Investigated nanomaterial is attractive to electronic and biomedical applications.

关键词： Multiwalled Carbon Nanotubes Electroconductive Nanomaterial Substrates Carboxymethyl Cellulose Electroconductive Gel Electroconductive Layers

时间域电磁资料中的异常电导率和异常磁导率效应

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国外油气勘探 2000年第1期12卷 119-123页

作者： Dmitriy pavlov 彭清香物探局地调五处

时间域电磁(TDEM)响应常与导体中存在的涡流有关,因为这是主导效应。然而,其它效应如由介电过程产生的位移电流和与岩石磁化有关的磁场,也对TDEM响应产生影响。本文将分析磁化对TDEM数据的影响。我们使用Wang和Hohmann(1993)研制的以有... 详细信息

时间域电磁(TDEM)响应常与导体中存在的涡流有关,因为这是主导效应。然而,其它效应如由介电过程产生的位移电流和与岩石磁化有关的磁场,也对TDEM响应产生影响。本文将分析磁化对TDEM数据的影响。我们使用Wang和Hohmann(1993)研制的以有限差分法为基础的数值计算方法TDEM3DL来研究瞬变电磁场在一种介质中的传播,这种介质所含的物体既有异常导电体又有异常导磁体。惊人的结果是,兼有异常导电性和异常导磁性的物体比仅有纯导电异常或纯导磁异常的物体对TDEM的异常响应大得多。这种效应在解释可能具有导磁性的电性不均匀构造上的TDEM资料时必须予以考虑。

关键词：磁异常电导率时间域电磁资料电磁法勘探

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Bypassing major venous occlusion and duodenal lesions in rats, and therapy with the stable gastric pentadecapeptide BPC 157, L-NAME and L-arginine

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World Journal of Gastroenterology 2018年第47期24卷 5366-5378页

作者： Fedor Amic Domagoj Drmic Zdenko Bilic Ivan Krezic Helena Zizek marina Peklic Robert Klicek Alen Pajtak Enio Amic Tinka Vidovic Mislav Rakic Marija Milkovic Perisa Katarina Horvat pavlov Antonio Kokot Ante Tvrdeic Alenka Boban Blagaic Mario Zovak Sven Seiwerth Predrag Sikiric Department of Pharmacology Medical Faculty University of Zagreb Department of Pathology Medical Faculty University of Zagreb

AIM To investigate whether duodenal lesions induced by major venous occlusions can be attenuated by BPC 157 regardless nitric oxide(NO) system *** Male Wistar rats underwent superior anterior pancreaticoduodenal vein(SAPDV)-ligation and were treated with a bath at the ligated SAPDV site(BPC 157 10 μg, 10 ng/kg per 1 mL bath/rat; L-NAME 5 mg/kg per 1 m L bath/rat; L-arginine 100 mg/kg per 1 mL bath/rat, alone and/or together; or BPC 157 10 μg/kg instilled into the rat stomach, at 1 min ligation-time). We recorded the vessel presentation(filled/appearance or emptied/disappearance) between the 5 arcade vessels arising from the SAPDV on the ventral duodenum side, the inferior anterior pancreaticoduodenal vein(IAPDV) and superior mesenteric vein(SMV) as bypassing vascular pathway to document the duodenal lesions presentation; increased NO-and oxidative stress [malondialdehyde(MDA)]-levels in *** Unlike the severe course in the SAPDV-ligated controls, after BPC 157 application, the rats exhibited strong attenuation of the mucosal lesions and serosal congestion, improved vessel presentation, increased interconnections, increased branching by more than 60% from the initial value, the IAPDV and SMV were not congested. Interestingly, after 5 min and 30 min of L-NAME and L-arginine treatment alone, decreased mucosal and serosal duodenal lesions were observed; their effect was worsened at 24 h, and no effect on the collateral vessels and branching was seen. Together, L-NAME+L-arginine antagonized each other's response, and thus, there was an NO-related effect. With BPC 157, all SAPDV-ligated rats receiving L-NAME and/or L-arginine appeared similar to the rats treated with BPC 157 alone. Also, BPC 157 in SAPDV-ligated rats normalized levels of NO and MDA, two oxidative stress markers, in duodenal *** BPC 157, rapidly bypassing occlusion, rescued the original duodenal flow through IAPDV to SMV flow, aneffect related to the NO system and

关键词： Major venous occlusion Duodenal lesions BPC 157 L-NAME Bypassing L-arginine Reduction of free radical formation Rats