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2557篇 您的检索式:作者名="Yun J"
    题名 作者 年代 出处 被引量
1高炉钛矿护炉的机理研究显示文摘从热力学和热模拟试验两方面研究了碳饱和铁浴内Ti(C ,N)的生成机理。利用CONFOCAL激光高温显微镜的试验数据重新确定了Ti在碳饱和铁浴内的溶解度和Ti(C ,N)形成所需的最低Ti含量。结果表明在碳饱和铁浴内生成碳化钛和氮化钛的最低Ti含量较采用现行热力学数据的计算值要低。采用长坩埚法研究了不同温度梯度条件下Ti(C ,N)的形成 ,发现Ti(C ,N)李永全 Yun Li R J Fruehan 2002宝钢技术2002,,1:25
2The ReaxFF reactive force-field: development, applications and future directions显示文摘The reactive force-field(ReaxFF)interatomic potential is a powerful computational tool for exploring,developing and optimizing material properties.Methods based on the principles of quantum mechanics(QM),while offering valuable theoretical guidance at the electronic level,are often too computationally intense for simulations that consider the full dynamic evolution of a system.Alternatively,empirical interatomic potentials that are based on classical principles require significantly fewer computational resources,which enables simulations to better describe dynamic processes over longer timeframes and on larger scales.Such methods,however,typically require a predefined connectivity between atoms,precluding simulations that involve reactive events.The ReaxFF method was developed to help bridge this gap.Approaching the gap from the classical side,ReaxFF casts the empirical interatomic potential within a bond-order formalism,thus implicitly describing chemical bonding without expensive QM calculations.This article provides an overview of the development,application,and future directions of the ReaxFF method.Thomas P Senftle Sungwook Hong Md Mahbubul Islam Sudhir B Kylasa Yuanxia Zheng Yun Kyung Shin Chad Junkermeier Roman Engel-Herbert Michael J Janik Hasan Metin Aktulga Toon Verstraelen Ananth Grama Adri CT van Duin 2016npj Computational Materials2016,,1:22
3青藏高原及周边高山地区的植物繁殖生态学研究进展显示文摘青藏高原及周边高山地区孕育了极为丰富的植物多样性资源,研究该地区植物如何顺利完成繁殖过程有助于我们理解植物对典型高山环境的进化和适应机制。该文综述了青藏高原地区高山植物在资源分配、繁殖方式、花部特征演化等方面的研究进展,包括全球气候变化对植物繁殖特征的影响,以及一些新技术和新方法在本研究领域的应用。在高山地区限制性环境中,随海拔升高,繁殖分配通常表现出增大的趋势,其中投入到雄性资源的比例上升,但具体的资源分配模式还要取决于植株的交配系统、个体大小、生活史特征、遗传特性以及环境中的资源有效性等。面对资源和传粉的双重限制,植物在不同繁殖方式之间存在权衡,当传粉者稀少时,克隆繁殖和自交有利于繁殖保障;而有性繁殖和异交能够提高种子的质量和后代的遗传多样性,从而在复杂多变的气候条件下有利于种群的维持。因此,不同繁殖方式的结合以及泛化的传粉互作网络可能是应对高山限制性环境的最优选择。花部特征的演化主要受到当地传粉者的选择压力,但是外来传粉者、植食者、盗蜜者以及非生物环境(如温度、雨水和紫外辐射等)对花部性状的影响越来越受到重视。近年来,青藏高原因其脆弱性和对气候变化的高度敏感性而在全球气候变化研究中备受关注,以全球变暖和氮沉降增加为显著特征的全球气候变化正在直接或间接地影响着该地区高山植物的繁殖特征。气候变化影响植物和传粉者的物候并引起物种的迁移,最终将导致植物与传粉者的时空不匹配。植物通过改变花部特征(花展示、花冠结构、花报酬的数量和质量)来响应气候变化,这可能会改变其传粉者的类型、数量和访花行为,从而最终影响植物的繁殖成功。3D打印和高通量测序等新技术和新方法的应用有助于促进植物繁殖生态学研究的进一步发展。3D打印的花能够精确控制其形态构造,可以用于研究精细的花部特征变化对于传粉者行为的影响,在此基础上与人工饲养的传粉者结合使用,有助于进一步研究传粉者介导的花部特征演化。随着高通量测序技术的发展,植物繁殖生态学领域,尤其是花部特征演化的许多重要问题的潜在机制得以深入研究。该文最后提出了目前研究中需要注意的问题以及值得深入研究的发展方向。张婵 安宇梦 Yun JÄSCHKE 王林林 周知里 王力平 杨永平 段元文 2020植物生态学报2020,44,1:19
4Intermittent fasting promotes adipose thermogenesis and metabolic homeostasis via VEGF-mediated alternative activation of macrophage显示文摘Kyoung-Han Kim Yun Hye Kim Joe Eun Son Ju Hee Lee Sarah Kim Min Seon Choe Joon Ho Moon Jian Zhong Kiya Fu Florine Lenglin Jeong-Ah Yoo Philip J Bilan Amira Klip Andras Nagy Jae-Ryong Kim Jin Gyoon Park Samer MI Hussein Kyung-Oh Doh Chi-chung Hui Hoon-Ki Sung 2017Cell Research2017,27,11:9
5经皮经导管射频消融去肾交感神经术与螺内酯对难治性高血压昼夜节律和血压变异性的影响显示文摘经皮经导管射频消融去肾交感神经术(sympathetic renal denervation,SRD)可作为药物控制不佳的难治性高血压患者的一种替代治疗方法,SRD对减少短期血压变异性(blood pressure variability,BPV)有效。然而,这个作用尚未在随机对照试验中证实。本研究旨在比较螺内酯和SRD对昼夜血压和BPV的影响。方法:对一项随机试验进行析因分析,de la Sierra A Pareja J Armario P Barrera  Yun S Vázquez S Sans L Pascual J Oliveras A 陈云 叶鹏 2017中华高血压杂志2017,25,8:3
6Reactive oxygen species modulates the intracellular level of HBx viral oncoprotein 显示文摘WANG J H YUN C KIM S 2003Biochem Biophys Res Commun2003,310,1:1
7LPS induces inflammatory responses in human aortic vascular smooth muscle cells via Toll-hke receptor 4 expressions and nitric oxide production显示文摘Heo S K Yun H J Noh E K 2008Immunol Lett2008,120,12:1
8Preparation and characterizations of uniform nanosized BaTiO3 crystallites by the high-gravity reactive precipitation method显示文摘Shen Z G Chen J F Yun J 2004Crystal Growth2004,267,:1
9Nucleation and Growth Behavior of Chromium Nitride Film Deposited on Various Substrates by Magnetron Sputtering显示文摘 Kyung H N Yun M J 2003Surf Coat Technol2003,171,:1
10Clinical features and treatment outcomes of non-Hodgkin′s lymphomas involving rare extranodal sites:a single-center experience显示文摘Yun J Kim SJ Kim JA 2010Acta Haematol2010,123,1:1
11Database accessing method in expert system显示文摘YANG P H YANG J YUN X Y 2005ICEMI2005,5,5:1
12Acute coronary syndromes显示文摘Yun D D Alpert J S 1997Cardiology1997,88,3:1
13Cellular sensitization to cisplatin and carboplatin with decreased removal of platinum-DNA adduct by glucose-regulated stress显示文摘YAMADA M TOMIDA A YUN J 1999Cancer Chemother Pharmacol1999,44,1:1
14Influence of Screw Speeds of the Mixer at Low Temperature on Characteristics of Moz zarella Cheese显示文摘RENDA A BARBANO D M YUN J J 1997Journal of Dairy Science1997,80,9:1
15Continuous production of solid lipid nanoparticles by liquid flow-focusing and gas displacing method in microchanncls 显示文摘Yun J X Zhang S H Shen S C 2009Chem Eng Sei2009,64,19:1
16Light and brassinosteroid signals are integrated via a dark-induced small G protein in etiolated seedling growth 显示文摘KANG J G YUN J KIM D H 2001Cell2001,105,:1
17Expression and relationship of the insulin-like growth factor system with post-hatch growth in the Korean Native Ogol chicken显示文摘Yun J S Seo D S Kim W K 2005Poultry Sci2005,84,1:1
18Notch-regulated ankyrin-repeat protein inhibits Notch1 signaling:multiple Notch1 signaling pathways involved in T cell development显示文摘Yun T J Bevan M J 2003J Immunol2003,170,12:1
19Enantioselective Binding of S-and R-Ofloxacin to Various Synthetic Polynucleotides显示文摘Hwangbo H J Yun B H Cha J S 2003European Journal of Pharmaceutical Sciences2003,18,2:1
20Trlterpenoid extractives in the outer bark of Betula lenta (black birch)显示文摘BARARA J W C MICHAEL D B YUN H 1991Holzforschung1991,45,:1
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