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Theoretical Study of Haloacetonitrile Anions： CH2XCN^- （X=F, Cl）

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Chinese Journal of Chemical Physics 2008年第3期21卷 255-262页

作者： Xin-wen Zhang Mei li shan-xi Tian Hefei National Laboratory for Physical Sciences at Microscale University of Science and Technologyof China Hefei 230025 China Department of Chemical Physics University of Science and Technology of China Hefei 230026China

Haloacetonitrile anions CH2XCN- （X=F, Cl） were studied by HF-SCF, Becke3-LYP, and MP2 methods together with the Dunning＇s basis set aug-cc-PVTZ. The vertical electron attachments to the neutral are endothermic. The geometrically optimized CH2FCN^- is mainly a valence-bounded anion and CH2FCN→CH2CN＋F^- is a nonadiabatic dissociation. This theoretical study in good agreement with the experimental results shows that the Becke3-LYP method is reasonable in describing the electronic structures of anions and dissociative attachment dynamics, while significant differences between MP2 and Becke3-LYP results are shown for the dissociation potential curves of CH2ClCN→CH2CN＋Cl^-.

关键词： Haloacetonitrile Electron attachment Dissociation dynamics Electron correlation effect

Deformation resistance of Fe-Mn-V-N alloy under different deformation processes

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Rare Metals 2017年第10期36卷 833-839页

作者： Yun-li Feng Jie li li-Qun ai Bao-Mei Duan College of Metallurgy and Energy North China University of Science and Technology Tangshan 063009 China Key Laboratory of the Ministry of Education for Modem Metallurgy Technology Tangshan 063009 China

The deformation resistance of Fe-Mn-V-N alloy under different deformation conditions was investigated by hot compression method on thermal simulator. Effects of deformation degree, deformation temperature, and strain rate on deformation resistance were analyzed. The results show that when other conditions are constant, the deformation resistance increases with the increase in deformation degree and strain rate and decreases with the increase in deformation temperature. At the same time, the mathematical model of deformation resistance for Fe-Mn- V-N alloy was established by lstOpt software using the Levenberg-Marquardt optimization algorithm carried out on the fitting of regression coefficients, which has higher fitting precision.

关键词： Fe-Mn-V-N alloy Deformation process Deformation resistance Mathematical model

Effect of Cr_(2)O_(3) on properties of CaO-SiO_(2)-Fe_(t)O-MgO system and dissolution behavior of lime

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Journal of Iron and Steel Research International 2024年第4期31卷 870-881页

作者： shan-nan li Jian-li li Yue Yu Hang-yu Zhu The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

The productivity of the chrome-containing semi-steel converter smelting process is directly affected by the slag-forming speed during the converter preliminary *** effects of Cr_(2)O_(3) content on the physicochemical properties of the CaO-SiO_(2)-Fe_(t)O-MgO system,such as melting temperature,solidification behavior,mineral composition,and lime dissolution rate,were *** results showed that the slag was an amorphous phase at 1500℃.When Cr_(2)O_(3) was added,Ca(Fe,Mg)Si_(2)O_(6) and spinel were formed in the *** the increase in Cr_(2)O_(3) content,the amount of spinel precipitation increased,and the dendritic FegO_(4) crystal gradually changed into the granular(Fe,Mg)(Fe,Cr)2O_(4) *** the Cr_(2)O_(3) content increased from O to 2.91 wt.%,the melting temperature of the slag rose,and the melting range of the slag expanded slightly,but the lime dissolution rate did not *** the Cr_(2)O_(3) content further increased to 9.09 wt.%,the melting temperature continued to rise,the melting range rapidly expanded,and the lime dissolution rate decreased.

关键词： Cr_(2)O_(3) Vanadium-titanium magnetite Converter Slag lime dissolution

Impact parameter dependence of the yield ratios of light particles as a probe of neutron skin

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Nuclear Science and Techniques 2019年第3期30卷 59-64页

作者： Ting-Zhi Yan shan li School of Energy and Power Engineering Northeast Electric Power University

The yield ratios of neutron/proton(R(n/p)) and ~3H=~3He(R(t/~3He)) with reduced rapidity from 0 to 0.5 are investigated for 50 MeV/u ^(42;44;46;48;50;52;54;56)Ca+^(40)*** was conducted at whole reduced impact parameters using the isospin-dependent quantum-molecular-dynamics model in which the initial neutron and proton densities are sampled within the Skyrme–Hartree–Fock model, using which the neutron skin thickness(△R_(np)) is determined for different neutron-rich Ca isotopes. The results show that both R(n/p) and R(t/~3He) have strong linear correlations with △R_(np) of different Ca isotopic projectiles from five different centralities. It is suggested that R(n/p) and R(t/~3He), from the same centrality, could be treated as possible experimental observables to extract the neutron skin or halo thickness for neutron-rich isotopic nuclei,including the nuclei near the neutron drip line.

关键词： Yield ratio Neutron skin thickness Isospindependent quantum-molecular-dynamics

HISP： a hybrid intelligent approach for identifying Jirected signaling pathways

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Journal of Molecular Cell Biology 2017年第6期9卷 453-462页

作者： Xing-Ming Zhao shan li Institute of Science and Technology for Brain-Inspired Intelligence Fudan University Shanghai 200433 China Department of Mathematics Shanghai University Shanghai 200444 China

Signal transduction plays important roles in biological systems. Unfortunately, our knowledge about signaling pathways is far from complete. Specifically, the direction of signaling flows is less known even though the signaling molecules of some signaling pathways have been determined. In this paper, we propose a novel hybrid intelligent method, namely HISP （Hybrid Intelligent approach for identifying directed Signaling Pathways）, to determine both the topologies of signaling pathways and the direction of signaling flows within a pathway based on integer linear programming and genetic algorithm. By integrating the protein-protein interaction, gene expression, and gene knockout data, our HISP approach is able to determine the optimal topologies of signaling pathways in an accurate way. Benchmark results on yeast MAPK signaling pathways demonstrate the efficiency of our proposed approach. When applied to the EGFR/ErbB signaling pathway in human hepatocytes, HISP unveils a high-resolution signaling path- way, where many signaling interactions were missing by existing computational approaches.

关键词： EGFR/ErbB signaling pathway genetic algorithm hybrid intelligence integer linear programming MAPK signaling path-way signaling pathway

Rhinogobius immaculatus, a new species of freshwater goby (Teleostei Gobiidae) from the Qiantang River, China

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Zoological Research 2018年第6期39卷 396-405页

作者： Fan li shan li Jia-Kuan Chen Institute of Biodiversity Science Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering Fudan UniversityShanghai 200433 China shanghai Ocean University Shanghai 200090 China shanghai Natural History Museum Branch of Shanghai Science & Technology Museum Shanghai 200041 China

A new freshwater goby, Rhinogobius immaculatus sp. nov., is described here from the Qiantang River in China. It is distinguished from all congeners by the following combination of characters： second dorsal-fin rays I, 7-9; anal-fin rays I, 6-8; pectoral-fin rays 14-15; longitudinal scales 29-31; transverse scales 7-9; predorsal scales 2-5; vertebrae 27 （rarely 28）; preopercular canal absent or with two pores; a red oblique stripe below eye in males; branchiostegal membrane mostly reddish-orange, with 3-6 irregular discrete or connected red blotches on posterior branchiostegal membrane and lower operculum in males; caudal-fin base with a median black spot; and no black blotch on anterior part of first dorsal fin in males.

关键词： Gobiidae Rhinogobius New species Qiantang River China

敦煌三危山出产多色颜料的矿物学及谱学特征研究

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光谱学与光谱分析 2025年第1期45卷 152-159页

作者：李林筱谭宇辰先怡衡铁付德孙满利艾昊梁云孙凤西北大学文化遗产学院陕西西安710127 中国国家博物馆北京100006

敦煌三危山火焰沟发现一处古代多色颜料开采遗址,该遗址的发现对研究我国西北地区古代矿物颜料的来源有着一定的学术意义。为判断三危山出产颜料的矿物种属及其谱学特征,本文应用偏光显微镜、X射线衍射、激光拉曼光谱、X射线荧光光谱多... 详细信息

敦煌三危山火焰沟发现一处古代多色颜料开采遗址,该遗址的发现对研究我国西北地区古代矿物颜料的来源有着一定的学术意义。为判断三危山出产颜料的矿物种属及其谱学特征,本文应用偏光显微镜、X射线衍射、激光拉曼光谱、X射线荧光光谱多种光谱分析手段对所出产多色颜料矿物开展科学分析。结果表明,三危山古矿出产矿物颜料属天然矿物,主要化学成分为Fe_(2)O_(3)(平均含量66%)和SiO_(2)等,部分样品呈现富硅铝的特征,且均存在不同程度的烧失;主要物相以赤铁矿、针铁矿为主,少许铁矾类,脉石矿物包括石英、高岭石及少许黏土矿物。同时进一步通过拉曼光谱对矿物颜料的显色物相进行分析,2号亮黄色矿物显色物相和前述主要物相一致,均为铁矾类(黄钾铁矾和黄钠铁矾)。除4号样品外,所有呈红棕色的样品主要显色物相均为α-Fe_(2)O_(3)即赤铁矿,而4号样品显色物相为针铁矿,呈色本应为黄色,但致其呈色变为红棕色是由于和赤铁矿伴生存在,且赤铁矿显色能力远强于针铁矿,故改变了4号样品的呈色。综上,该古矿遗址所出产的红色矿物颜料主要为赤铁矿,黄色矿物颜料为黄钾铁矾和黄钠铁矾。黄钾铁矾作为优良的颜料,在岩画及壁画也多有使用,但在莫高窟目前已研究的壁画上暂未发现使用,三危山古矿实证了铁矾类颜料矿物的存在,该发现在一定程度上拓宽了对西北地区黄色矿物颜料的维度。同时也为后续研究该矿冶遗址出产颜料的流向,提供了基础性的数据支撑。

关键词：敦煌采矿遗址矿物颜料呈色拉曼光谱

Quasi Ellipsoid Gear Surface Reconstruction Based on Meshless Local Petrov-Galerkin Method and Transmission Characteristic

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Chinese Journal of Mechanical Engineering 2010年第6期23卷 788-792页

作者： WU Xuemei shan Debin li Guixian School of Mechanical and Electrical Engineering Harbin Institute of Technology Harbin 150006 China School of Materials Science and Engineering Harbin Institute of Technology Harbin 150006 China

Special transmission 3D model simulation must be based on surface discretization and reconstruction, but special transmission usually has complicated tooth shape and movement, so present software can＇t provide technical support for special transmission 3D model simulation. Currently, theoretical calculation and experimental method are difficult to exactly solve special transmission contact analysis problem. How to reduce calculation and computer memories consume and meet calculation precision is key to resolve special transmission contact analysis problem. According to 3D model simulation and surface reconstruction of quasi ellipsoid gear is difficulty, this paper employes meshless local Petrov-Galerkin （MLPG） method. In order to reduce calculation and computer memories consume, we disperse tooth mesh into finite points--sparseness points cloud or grid mesh, and then we do interpolation reconstruction in some necessary place of the 3D surface model during analysis. Moving least square method （MLSM） is employed for tooth mesh interpolation reconstruction, there are some advantages to do interpolation by means of MLSM, such as high precision, good flexibility and no require of tooth mesh discretization into units. We input the quasi ellipsoid gear reconstruction model into simulation software, we complete tooth meshing simulation. Simulation transmission ratio during meshing period was obtained, compared with theoretical transmission ratio, the result inosculate preferably. The method using curve reconstruction realizes surface reconstruction, reduce simulation calculation enormously, so special gears simulation can be realized by minitype computer. The method provides a novel solution for special transmission 3D model simulation analysis and contact analysis.

关键词： meshless local Petrov-Galerkin method moving least square method quasi ellipsoid gear tooth mesh simulation

The role of m^(6)A RNA methylation in autoimmune diseases: Novel therapeutic opportunities

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Genes & Diseases 2024年第1期11卷 252-267页

作者： Yunan shan Wei Chen Yanbin li The First Clinical Medical College Shandong University of Traditional Chinese MedicineJinanShandong 250013China Department of Neurology The First Affiliated Hospital of Shandong First Medical University&Shandong Provincial Qjanfoshan HospitalShandong Institute of NeuroimmunologyShandong Key Laboratory of Rheumatic Disease and Translational MedicineJinanShandong 250013China Department of Gastroenterology Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200233China

N6-methyladenosine m^(6)A modifications,as one of the most common forms of in-ternal RNA chemical modifications in eukaryotic cells,have gained increasing attention in recent *** m^(6)A RNA modifications exert various crucial roles in various biological pro-cesses,such as embryonic development,neurogenesis,circadian rhythms,and *** advances have highlighted that m^(6)A RNA modification plays an important role in im-mune response,especially in the initiation and progression of autoimmune *** this re-view,we summarized the regulatory mechanisms of m^(6)A methylation and its biological functions in the immune system and mainly focused on recent progress in research on the po-tential role of m^(6)A RNA methylation in the pathogenesis of autoimmune diseases,thus providing possible biomarkers and potential targets for the prevention and treatment of auto-immunediseases.

关键词： Adaptive immunity Autoimmune diseases Innate immunity Immune response m^(6)A RNA methylation