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Growth of carbon nanotube arrays on various CtxMey alloy films by chemical vapour deposition method

Journal of Materials Science & Technology 2018年第3期34卷 472-480页

作者： Pawel Mierczynski Sergey V.Dubkov Sergey V.Bulyarskii Alexander A.Pavlov Sergey N.Skorik Alexey yu.Trifonov Agnieszka Mierczynska Eugene P.Kitsyu. Sergey A.Gavrilov Tomasz P.Maniecki dmitry G.Gromov Institute of General and Ecological Chemistry Lodz University of TechnologyZeromskiego 116Lodz 90-924Poland National Research University of Electronic Technology Shokin SquareZelenogradMoscow 124498Russia Institute of Nanotechnology of Microelectronics of the RAS INMEMoscow 11-9991Russia Scientific-Manufacturing Complex'Technological Center' ZelenogradMoscow 124498Russia Scientific Research Institute of Physical Problems named after F V.Lukin Proezd 4806.6ZelenogradMoscow 124460Russia The Australian Wine Research Institute Waite PrecinctHartley Grove cnr Paratoo RoadUrrbrae AdelaideSA 5064Australia

Carbon nanotube （CNT） arrays were fabricated on Ct-Me-N-（O） alloys with content of Ct in the range of 6-40 at.% by chemical vapour deposition. The Ct was a catalytic metal from the group of the following elements： Ni, Co, Fe, Pd, while Me was a transition metal from the group of IV-VII of the periodic table （where Me=Ti, V, Cr, Zr, Nb, Mo, Ta, W, Re）. Carbon nanotubes were found to grow efficiently on the alloy surface with its composition containing Ti, V, Cr, Zr, Hf, Nb or Ta. The growth of CNTs was not observed when the alloy contained W or Re. Additions of oxygen and nitrogen in the alloy facilitated the formation of oxynitrides and catalyst extrusion on the alloy surface. Replacement of the metals in alloy composition affected the diameter of the resulting CNTs. The obtained results showed that the alloy films of varying thickness （10-500 nm） may be used for the CNTs growth. The resulting CNT material was highly homogenous and its synthesis reproducible.

关键词： Carbon nanotubes Amorphous alloys Chemical vapour deposition Catalytic processes Thin films

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Isolation and Characterization of a New Cyanobacterial Strain with a Unique Fatty Acid Composition

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Advances in Microbiology 2014年第15期4卷 1033-1043页

作者： Fariza K. Sarsekeyeva Aizhan A. Usserbaeva Bolatkhan K. Zayadan Kirill S. Mironov Roman A. Sidorov Anna yu. Kozlova Elena V. Kupriyanova Maria A. Sinetova dmitry A. Los Institute of Plant Physiology Russian Academy of Sciences Moscow Russia Department of Biotechnology Faculty of Biology and Biotechnology Al-Farabi Kazakh National University Almaty Kazakhstan

A new cyanobacterial strain was isolated and purified from salt Lake Balkhash, Kazakhstan. According to its morphological and ultrastructural characteristics, 16S rRNA sequence and the fatty acid profile, the strain has been classified as Cyanobacterium spp. and assigned as Cyanobacterium sp. IPPAS B-1200. The strain is characterized by a non-temperature inducible Δ9-desaturation system, and by high relative amounts of myristic (14:0—30%) and myristoleic (14:1Δ9—10%) acids. The total amount of C14 fatty acids reaches 40%, which is unusually high for cyanobacteria, and it has never been reported before. The remaining fatty acids are represented mainly by palmitic (16:0) and palmitoleic (16:1Δ9) acids (the sum reaches nearly 60%). Such a fatty acid composition, together with a relatively high speed of growth, makes this newly isolated strain a prospective candidate for biodiesel production.

关键词： Cyanobacterium Fatty Acids Lake Balkhash Myristic Acid Myristoleic Acid 16S rRNA

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Influence of electrode spacing and gas pressure on parameters of a runaway electron beam generating during the nanosecond breakdown in SF_(6) and nitrogen

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High Voltage 2017年第2期2卷 49-55页

作者： Victor F.Tarasenko Cheng Zhang Andrey V.Kozyrev dmitry A.Sorokin Xingmin Hou Natalya S.Semeniuk Alexander G.Burachenko Ping Yan Vasily yu.Kozhevnikov Evgenii Kh.Baksht Mikhail I.Lomaev Tao Shao Institute of High Current Electronics Siberian Branch(SB)Russian Academy of Sciences(RAS)Tomsk 634055Russia National Research Tomsk State University Tomsk 634050Russia National Research Tomsk Polytechnic University Tomsk 634050Russia Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190People's Republic of China University of Chinese Academy of Sciences Beijing 100039People's Republic of China

This study deals with experimental and theoretical simulation data showing the influence of electrode spacing and gas pressure on parameters of a supershort avalanche electron beam(SAEB)formed in SF_(6) and nitrogen at different rise times and amplitudes of a voltage *** GIN-55-01,VPG-30-200,and SLEP-150M pulsers,tubular cathodes with a diameter of 6 mm,as well as gaps of 3,5,and 8 mm,it was shown that the SAEB current amplitude can both increase and decrease depending on an electrode spacing,a waveform and a rise time of the voltage pulse,as well as the pressure of SF6 and *** was established as a result of simulation that maximal voltage across the gap during the process of generation of runaway electrons and the thickness of an anode foil have a major effect on the SAEB current pulse amplitude.

关键词： SF_(6) electrode beam

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Genes associated with testicular germ cell tumors and testicular dysgenesis in patients with testicular microlithiasis

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Asian Journal of Andrology 2018年第6期20卷 593-599页

作者： Ilya S Dantsev Evgeniy V Ivkin Aleksey A Tryakin Dmitriy N Godlevski Oleg yu.Latyshev Victoriya V Rudenko dmitry S Mikhaylenko Vyacheslav B Chernykh Elena A Volodko Aleksey B Okulov Oleg B Loran Marina V Nemtsova Russian Medical Academy ef Postgraduate Education Moscow 123995 Russia N. N. Blokhin Russian Cancer Research Center Moscow 115478 Russia Research Centre of Medical Genetics Moscow 115478 Russia I. M. Sechenov First Moscow State Medical University Moscow 119991 Russia N. I. Pirogov Russian National Research Medical University Moscow 117997 Russia.

Testicular microlithiasis （TM） is one of the symptoms of testicular dysgenesis syndrome （TDS）. TM is particularly interesting as an informative marker of testicular germ cell tumors （TGCTs）. KIT ligand gene （KITLG）, BCL2 antagonist/killer 1 （BAK1）, and sprouty RTK signaling antagonist 4 （SPRY4） genes are associated with a high risk of TGCTs, whereas bone morphogenetic protein 7 gene （BMP7）, transforming growth factor beta receptor 3 gene （TGFBR3）, and homeobox D cluster genes （HOXD） are related to TDS. Using polymerase chain reaction-restriction fragment length polymorphism （PCR-RFLP） analysis, we investigated allele and genotype frequencies for KITLG （rs995030, rs1508595）, SPRY4 （rs4624820, rs6897876）, BAK1 （rs210138）, BMP7 （rs388286）, TGFBR3 （rs12082710）, and HOXD （rs17198432） in 142 TGCT patients, 137 TM patients, and 153 fertile men （control group）. We found significant differences in the KITLG GG_rs995030 genotype in TM （P= 0.01） and TGCT patients （P = 0.0005） compared with the control. We also revealed strong associations between KITLGrs1508595 and TM （G allele, P = 0.003; GG genotype, P= 0.01） and between KITLG_rs1508595 and TGCTs （G allele, P-- 0.0001; GG genotype, P = 0.0007）. Moreover, there was a significant difference in BMP7_rs388286 between the TGCT group and the control （T allele, P = 0.00004; TT genotype, P = 0.00006） and between the TM group and the control （T allele, P= 0.04）. HOXDalso demonstrated a strong association with TGCTs （rs17198432 A allele, P = 0.0001; AA genotype, P = 0.001）. Furthermore, significant differences were found between the TGCT group and the control in the BAK1_rs210138 G allele （P= 0.03） and the GG genotype （P= 0.01）. KITLG and BMP7genes, associated with the development of TGCTs, may also be related to TM. In summary, the KITLG GG_rs995030, GG_rs1508595, BMP7 TT_rs388286, HOXD AA_rs17198432, and BAK1 GG_rs210138 genotypes were associated with a high risk of TGCT development.

关键词： associations genotype high risk testicular dysgenesis syndrome testicular microlithiasis

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东喜马拉雅山地区木材腐朽菌研究4.云南高黎贡山地区山的木材腐朽菌(英文)

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菌物学报 2014年第3期33卷 611-620页

作者：戴玉成崔宝凯何双辉 SCHIGEL dmitry 北京林业大学微生物研究所 Finnish Museum of Natural History P.O.Box17FI‐00014 University of Helsinki

对云南高黎贡山地区进行了3次木材腐朽菌调查,共采集到约410号标本,经鉴定共有木材腐朽菌128种,列出了这些种类的名录,并提供了每种的寄主和其他采集信息。其中保山小集毛孔菌Coltriciella baoshanensis为新种,其主要特征是担子果盖形... 详细信息

对云南高黎贡山地区进行了3次木材腐朽菌调查,共采集到约410号标本,经鉴定共有木材腐朽菌128种,列出了这些种类的名录,并提供了每种的寄主和其他采集信息。其中保山小集毛孔菌Coltriciella baoshanensis为新种,其主要特征是担子果盖形或平伏反转,孔口较大(1–3个/mm),担孢子广椭圆形,只生长在栲属树木上,对其进行了详细的描述和显微结构绘图。

关键词：担子菌多样性真菌区系分类

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退火温度对等径角挤压处理Ti_(49.2)Ni_(50.8)合金马氏体相变的影响（英文）

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Transactions of Nonferrous Metals Society of China 2016年第2期26卷 448-455页

作者：张殿涛郭宝佟运祥田兵李莉郑玉峰 dmitry-V GUNDEROV Ruslan-Z VALIEV 哈尔滨工程大学超轻材料与表面技术教育部重点实验室哈尔滨150001 哈尔滨工程大学材料科学与化学工程学院生物医学材料与工程研究中心哈尔滨150001 北京大学工学院材料科学与工程系北京100871 Institute of Physics of Advanced Materials Ufa State Aviation Technical University

利用X射线衍射分析(XRD)、透射电子显微观察(TEM)与差示扫描量热分析(DSC)研究退火处理对等径角挤压Ti_(49.2)Ni_(50.8)合金马氏体相变行为的影响。经等径角挤压及后续退火处理的Ti_(49.2)Ni_(50.8)合金在室温下由B2母相、Ti_4Ni_2O相与... 详细信息

利用X射线衍射分析(XRD)、透射电子显微观察(TEM)与差示扫描量热分析(DSC)研究退火处理对等径角挤压Ti_(49.2)Ni_(50.8)合金马氏体相变行为的影响。经等径角挤压及后续退火处理的Ti_(49.2)Ni_(50.8)合金在室温下由B2母相、Ti_4Ni_2O相与B19′马氏体相组成。冷却过程中试样均表现出B2→R→B19′两步相变。加热过程中,退火温度不超过400°C的试样呈现B19′→R→B2两步相变;退火温度高于500°C的试样呈现B19′→B2一步相变。等径角挤压过程中引入的位错导致R相变的相变区间变宽。

关键词： TiNi合金等径角挤压马氏体相变退火温度

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Reduction and carburization of iron oxides for Fischer–Tropsch synthesis

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Journal of Energy Chemistry 2020年第12期29卷 48-61页

作者： Monia Runge Nielsen Asger Barkholt Moss Anton Simon Bjrnlund Xi Liu Axel Knop-Gericke Alexander yu.lyu.hin Jan-Dierk Grunwaldt Thomas LSheppard dmitry EDoronkin Anna Zimina Thomas Eric Lyck Smitshuysen Christian Danvad Damsgaard Jakob Birkedal Wagner Thomas Willum Hansen DTU Nanolab Technical University of DenmarkDK-2800Kgs.LyngbyDenmark Department of Physics Technical University of DenmarkDK-2800Kgs.LyngbyDenmark SynCat@Beijing Synfuels China Technology Co.LtdBeijing 101407China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Inorganic Chemistry Fritz Haber Institute of the Max Planck SocietyD-14195 BerlinGermany Research Group Heterogeneous Reactions.Max Planck Institute for Chemical Energy Conversion D-45470 MulheimGermany Research Group Catalysis for Energy Helmholtz-Zentrum Berlin for Materials and Energy(BESSYⅡ)D-12489 BerlinGermany Institute for Chemical Technology and Polymer Chemistry Karlsruhe Institute of TechnologyD-76131 KarlsruheGermany Institute of Catalysis Research and Technology Karlsruhe Institute of TechnologyD-76344 Eggenstein-LeopoldshafenGermany

The activation of iron oxide Fischer–Tropsch Synthesis(FTS) catalysts was investigated during pretreatment: reduction in hydrogen followed by carburization in either CO or syngas mixture, or simultaneously reduction and carburization in syngas. A combination of different complementary in situ techniques was used to gain insight into the behavior of Fe-based FTS catalysts during activation. In situ XRD was used to identify the crystalline structures present during both reduction in hydrogen and carburization. An increase in reduction rate was established when increasing the temperature. A complete reduction was demonstrated in the ETEM and a grain size dependency was proven, i.e. bigger grains need higher temperature in order to reduce. XPS and XAS both indicate the formation of a small amount of carbonaceous species at the surface of the bulk metallic iron during carburization.

关键词： In situ characterization Fischer–Tropsch Catalyst reduction and carburization Iron oxides

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Continuous wafer-scale graphene on cubic-SiC（O01）

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纳米研究：英文版 2013年第8期6卷 562-570页

作者： Alexander N. Chaika Olga V. Molodtsova Alexei A. Zakharov dmitry Marchenko Jaime Sanchez-Barrig Andrei Varykhalov Igor V. Shvets Victor yu. Aristov Institute of Solid State Physics RAS Chemogolovka Moscow District 142432 Russia Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) School of Physics Trinity College Dublin 2 Ireland HASYLAB at DESY D-22607 Hamburg Germany MAX-lab Lund University Box 118 22100 Lund Sweden Helmholtz-Zentrum Berlin für Materialien und Energie D- 12489 Berlin Germany

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Strengthening Bilateral Relationships

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Beijing Review 2010年第24期53卷 16-17页

作者： yu.YAN

Chinese President Hu Jintao reaches out to U.S.,Russian and Japanese leaders Chinese President Hu Jintao metwith *** Barack Obama,Russian President dmitry Medvedev and

关键词： Strengthening Bilateral Relationships

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变环境压力下的激光选区熔化——介观尺度模型与输运现象

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Engineering 2021年第8期7卷 260-276页

作者：胡仁志罗曼乐兰黄安国吴甲民魏青松文世峰张李超史玉升 dmitry Trushnikov V.Ya.Belenkiy I.yu.Letyagin K.P.Karunakaran 庞盛永 State Key Laboratory of Materials Processing and Die and Mould Technology Huazhong University of Science and Technology Department of Welding Production Metrology and Technology of Materials Perm National Research Polytechnic University Department of Mechanical Engineering Indian Institute of Technology Bombay

近期研究表明，相比常压条件下，采用真空或低压环境的激光选区熔化(SLM)工艺可获得缺陷更少、表面质量更优的打印件。虽然通过高速摄像实验已经对SLM工艺在真空环境下的介观物理过程进行了部分研究，但该工艺下影响熔池传热和流动方面... 详细信息

近期研究表明，相比常压条件下，采用真空或低压环境的激光选区熔化(SLM)工艺可获得缺陷更少、表面质量更优的打印件。虽然通过高速摄像实验已经对SLM工艺在真空环境下的介观物理过程进行了部分研究，但该工艺下影响熔池传热和流动方面的深层机理仍不十分清楚。为此，基于最近的激光焊接模型工作，我们首次建立了变环境压力下SLM工艺的介观尺度数学模型。我们模拟了大气压和100Pa低压环境下SLM工艺中316L粉末的输运现象。研究发现，在典型工艺参数(激光功率：200W；扫描速度：2 m·s-1；粉末直径：27μm)下，大气环境中熔池表面凹坑的平均温度将近2800 K，而在100Pa环境压力时，平均温度仅为2300 K。由于在100Pa低压条件下，蒸发引起的表面压力和环境压力之间的压差相对于大气环境下的压差更大，更易驱动高温流体流动，因此熔池表面流动速度更加剧烈(平均速度约为4 m·s-1)。研究表明，熔池表面周期性的波浪流动(周期：14μs)直接影响堆积体的表面粗糙度。此外，由于雷诺数小于400且远低于湍流临界值，熔融金属液流动模式为层流，因此，黏性耗散的影响至关重要。在真空或低环境压力条件下，波纹的流动轨迹更长，使得波动更容易由于黏性效应被耗散，从而改善了打印件的表面粗造度。总之，我们的数学模型阐明了变环境压力下SLM工艺实验研究中观察到的有趣输运现象的物理机制，它有望成为优化SLM工艺过程的有力工具。

关键词：激光选区熔化介观尺度模型环境压力输运现象

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