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A Fluctuation Type limit Theorem for Ji(?)ina Processes with Immigration

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Acta Mathematica Sinica,English Series 2009年第8期25卷 1379-1388页

作者： yu qiang li School of Finance and Statistics East China Normal University Shanghai 200241 P. R. China

It is proved by the theory of semigroup that the Ornstein-Uhlenbeck type process with jumps can arise from the fluctuation limit of a sequence of Jirina processes with immigration under suitable moments conditions.

关键词： Jirina process with immigration fluctuation limit Ornstein-Uhlenbeck type process

limit Distributions for Generalized Jirina Processes with Immigration

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Acta Mathematica Sinica,English Series 2011年第7期27卷 1333-1344页

作者： yu qiang li School of Finance and Statistics East China Normal University Shanghai 200241 P. R. China

A relationship between continuous state population-size-dependent branching （CSDB） processes with or without immigration and discrete state population-size-dependent branching （DSDB） processes with or without immigration is established via the representation of the former. Based on this relationship, some limiting distributions of CSDB processes with or without immigration are obtained.

关键词： Generalized branching process immigration limiting distribution

肌萎缩侧索硬化症患者认知损害和行为障碍的影像学研究进展

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中国临床神经科学 2024年第2期32卷 220-227页

作者：朱思佳俞立强方琪苏州大学附属第一医院神经内科苏州215006 苏州大学附属第一医院全科医学科苏州215006

肌萎缩侧索硬化症(ALS)是一种累及上、下运动神经元的神经退行性疾病,主要表现为进行性肌无力及肌萎缩。除运动障碍外,ALS还伴随许多非运动症状。其中,认知损害和行为障碍是最常见的非运动症状。多域认知缺陷对疾病进展、预后和治疗有... 详细信息

肌萎缩侧索硬化症(ALS)是一种累及上、下运动神经元的神经退行性疾病,主要表现为进行性肌无力及肌萎缩。除运动障碍外,ALS还伴随许多非运动症状。其中,认知损害和行为障碍是最常见的非运动症状。多域认知缺陷对疾病进展、预后和治疗有深远的负面影响。近年来随着影像学的发展,许多研究开始使用多模影像探索ALS认知损害和行为障碍的标志物。文中就ALS认知损害和行为障碍的多维度神经影像学研究进展进行综述。

关键词：肌萎缩侧索硬化症认知损害行为障碍影像学

Evolution of MnO–SiO2–Al_(2)O_(3)–MgO inclusions during heat treatment at 1100℃

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Journal of Iron and Steel Research International 2024年第5期31卷 1221-1231页

作者： Xu-bo Lei Jian-li li qiang Zeng Hang-yu Zhu yue yu The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430081HubeiChina Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan430081HubeiChina

To investigate the evolutionary behavior of the MnO–SiO_(2)–Al_(2)O_(3)–MgO inclusions during heat treatment,water quenched samples were isothermally held at 1100°C for 120 min in Ar and air atmosphere,and the obtaining samples were analyzed by X-ray diffraction,scanning electron microscopy and energy dispersive *** showed that 3MnO·Al_(2)O_(3)·3SiO_(2)and MnO·SiO_(2)were detected in the 5 wt.%MgO system after isothermal holding in Ar atmosphere,while MgO·Al_(2)O_(3),MnO·SiO_(2)and Mn7O8·SiO4 were detected in air *** evolutionary behavior of the 10,15 and 20 wt.%MgO systems after isothermal holding in different atmosphere were *** affected the solid phase transformation of the low MgO content *** calculation results of FactSage 8.1 showed that MgO·Al_(2)O_(3)was formed in the 5 wt.%MgO system with air *** solid phase transformation was accompanied by grain coarsening during the isothermal holding *** differences in the solid phase transformation in different atmosphere of the 5 wt.%MgO system indicated that it was a gas-phase transport grain coarsening *** enrichment of Al element in the liquid phase region at the grain edges,the homogeneous distribution of Mg element and the disappearance of the liquid phase within the crystal revealed that other MgO content systems were liquid–solid transport grain coarsening mechanism.

关键词： Evolution Glassy phase Inclusion Heat treatment MgO·Al_(2)O_(3)

Indian monsoon drove the dispersal of the thoracica group of Scytodes spitting spiders

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Zoological Research 2024年第1期45卷 152-159页

作者： yu-Fa Luo Shu-qiang li School of life and Environmental Sciences Shaoxing UniversityShaoxingZhejiang 312000China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezinNay Pyi Taw 05282Myanmar

We examined the global biogeography of the Scytodes thoracica group of spitting spiders based on 23 years of sampling at the species level(61 species in the thoracica group and 84 species of Scytodes)using DNA data from six *** results indicated that the thoracica group initially dispersed from Southeast Asia to East Africa between 46.5 and 33.0 million years ago,and dispersal events intensified between Southeast/South Asia and East/South Africa from the early to late *** timing of these events indicates that Asian-African faunal exchange of the thoracica group was driven by the Indian monsoon,and the pattern of dispersal suggests that colonialization took root when the Indian monsoon shifted from a North-South direction to an East-West direction from the middle Eocene.

关键词： Geological event Climate change Ballooning organism Faunal exchange Species distribution

A comprehensive review on microchannel heat sinks for electronics cooling

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International Journal of Extreme Manufacturing 2024年第2期6卷 133-162页

作者： Zhi-qiang yu Mo-Tong li Bing-Yang Cao Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Engineering MechanicsTsinghua UniversityBeijing 100084People’s Republic of China

The heat generation of electronic devices is increasing dramatically,which causes a serious bottleneck in the thermal management of electronics,and overheating will result in performance deterioration and even device *** the development of micro-machining technologies,the microchannel heat sink(MCHS)has become one of the best ways to remove the considerable amount of heat generated by high-power *** has the advantages of large specific surface area,small size,coolant saving and high heat transfer *** paper comprehensively takes an overview of the research progress in MCHSs and generalizes the hotspots and bottlenecks of this *** heat transfer mechanisms and performances of different channel structures,coolants,channel materials and some other influencing factors are ***,this paper classifies the heat transfer enhancement technology and reviews the related studies on both the single-phase and phase-change flow and heat *** comprehensive review is expected to provide a theoretical reference and technical guidance for further research and application of MCHSs in the future.

关键词： microchannel heat sink thermal management of electronics microscale heat transfer heat transfer enhancement

Genetic progress in stem lodging resistance of the dominant wheat cultivars adapted to Yellow-Huai River Valleys Winter Wheat Zone in China since 1964

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Journal of Integrative Agriculture 2020年第2期19卷 438-448页

作者： ZHANG Hong-jun li Teng liU Hong-wei MAI Chun-yan yu Guang-jun li Hui-li yu li-qiang MENG ling-zhi JIAN Da-wei YANG li li Hong-jie ZHOU Yang National Engineering Laboratory for Crop Molecular Breeding/Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Xinxiang Innovation Center for Breeding Technology of Dwarf-Male-Sterile Wheat Xinxiang 453731P.R.China Zhaoxian Experiment Station Shijiazhuang Academy of Agricultural and Forestry SciencesZhaoxian 051530P.R.China Institute of Agricultural Sciences the Fourth Division of the Xinjiang Production and Construction CorpsYining 835000P.R.China

Analysis of genetic progress for lodging-related traits provides important information for further improvement of lodging *** winter wheat cultivars widely grown in the Yellow-Huai River Valleys Winter Wheat Zone(YHWZ)of China during the period of 1964–2015 were evaluated for several lodging-related traits in three cropping *** height,height at center of gravity,length of the basal second internode,and lodging index decreased significantly in this period,and the average annual genetic gains for these traits were–0.50 cm or–0.62%,–0.27 cm or–0.60%,–0.06 cm or–0.63%,and–0.01 or–0.94%,*** from other traits,stem strength showed a significant increasing trend with the breeding period,and the annual genetic gains were 0.03 N or 0.05%.Correlation analysis showed that lodging index was positively correlated with plant height,height at center of gravity,and length of the basal second internode,but negatively correlated with stem ***,significantly positive correlations were observed between plant height,height at center of gravity,and length of the basal first and second *** comparison with the wild types,dwarfing genes had significant effects on all lodging-related traits studied except for length of the basal first internode and stem *** component analysis demonstrated that plant height and stem strength were the most important factors influencing lodging *** analysis based on the first two principle components further indicated the targets of wheat lodging-resistant breeding have changed from reducing plant height to strengthening stem strength over the breeding *** study indicates that the increase of stem strength is vital to improve lodging resistance in this region under the high-yielding condition when plant height is in an optimal range.

关键词： Triticum aestivum lodging resistance stem strength genetic progress Yellow-Huai River Valleys Winter Wheat Zone

Study on the relationship between level of CD_(58) expression in peripheral blood mononuclear cell and severity of HBV infection

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Chinese Medical Journal 2005年第24期118卷 2072-2076页

作者： XIE Ming WANG Xiang-ling Jl yu-qiang li Jie MENG Zhao-jun SHI lin yuAN yu-kang Department of Immunology Medical School of Xi＇ an JiaotongUniversity Xi＇ an 710061 China

Background As one of the intercellular adhesion molecules, CD58 plays important roles in promotion of the adhesion between T cells and target cells, hyperplasia, activation of T cells and natural killer cells, and balance between Thj and Th2. We studied the relationship between the levels of CD58 expression in peripheral blood mononuclear cells （PBMCs） and severity of HBV infection, Methods The levels of CD58 mRNA in PBMCs were detected using quantitative reverse transcription PCR. The percentage of CD58 positive cells was detected by flow cytometry in patients and healthy controls. Results The levels of CD58 mRNA and the percentage of CD58 positive cells in patients infected with HBV were significantly higher than that in the control. Based on severity of HBV infection, the patients were classified into four groups. The expression of CD58 increased significantly in an order from mild chronic, moderate chronic, severe chronic to severe hepatitis groups. The levels of CD58 mRNA and the percentage of CD58 positive cells in PBMCs from patients with HBV infection were both positively correlated with serum levels of ALT and AST. Conclusion The level of CD58 expression is related with the severity of HBV infection and the degree of liver damage.

关键词： antigen CD58 hepatitis B virus expression

Density-Functional Theories for Polyelectrolyte Systems

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Chinese Journal of Polymer Science 2024年第9期42卷 1302-1312,I0006页

作者： Jia-Wei Zhang yu-Hang Zhang Bao-Hui li qiang Wang School of Physics Nankai UniversityTianjin90001China Department of Chemical and Biological Engineering Colorado State University1370 Campus DeliveryFort CollinsCO80523-1370USA

Polymer density-functional theories(PDFTs)have distinct advantages in the study of polyelectrolyte(PE)systems over experiments and molecular *** we give an introductory review of some PDFTs recently developed for PE *** start with a general formalism of PDFTs and its relation to the widely used polymer self-consistent field theory(SCFT),then explain the various correlations that are neglected in SCFT but can be accounted for in PDFTs,including those due to the excluded-volume interaction and chain connectivity of uncharged polymers,the electrostatic correlations of small ions,and the chain correlations in *** also list some applications of PDFTs for PE systems,and finally give some perspectives on future *** hope that our review can attract more researchers to apply and further develop PDFTs as a promising class of theoretical and computational tools.

关键词： Polymer density-functional theories Polyelectrolytes Correlations