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Species diversification and phylogeographical patterns of birds in response to the uplift of the Qinghai-Tibet Plateau and quaternary glaciations

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Current Zoology 2014年第2期60卷 149-161页

作者： Fumin lei Yanhua qu Gang SONG Key Laboratory of Zoological Systematics and Evolution Institute of Zoology Chinese Academy of Sciences Beijing 100101China

The Qinghai-Tibet Plateau （QTP） is well known for being of great importance in the evolution of montane species due to its unique geological history and landform configuration, climate complexity, and diversified habitats. The effect of environmental changes since the quaternary on species diversification, population genetic structure, and demography under environmental change can be studied using phylogenetic and phylogeographieal approaches. Birds are the most well-studied group of all terrestrial vertebrates with regard to their response to climatic changes over time. Herein, we briefly review the species diversification of birds in response to the uplift of the QTP, focusing on summarizing the different phylogeographical patterns of birds on the Plateau, its southeastern margin, and the Eastern Himalayas and the reasons underlying these patterns. Speciation was found to be closely related to the uplift of the QTP, with different patterns of intraspecific processes：（1） no divergence within a single refuge was identified in a restricted semi-continuous area of the eastern margin of the Plateau; （2） two divergent lineages with separated refugia were located at the south-eastern and north-eastern margins of the plateau; and （3） multiple divergent lineages within subregions were found in the Eastern Himalayas. Glacial movements and induced climate change are considered to be key factors in shaping these different patterns. The species distributed mainly in the heavily ice-covered platform regions of the Plateau experienced population expansion following the retreat of the extensive glaciations, whereas the species distributed on the ice-free edges of the plateau maintained their population size at a stable level. Demographic stresses on the edge species might have been mitigated by the milder climate in comparison to their platform-distributed counterparts. Various behavioral and ecological characteristics, including dispersal capacity, habitat preference, and eleva

关键词： Qinghai-Tibet Plateau Comparative phylogeography Bird Pleistocene glaciations

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Effect of strain rate and temperature on the deformation behavior in a Ti-23.1Nb-2.0Zr-1.0O titanium alloy

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Journal of Materials Science & Technology 2021年第14期73卷 52-60页

作者： Yi Yang Di Xu Sheng Cao Songquan Wu Zhengwang Zhu Hao Wang lei Li Shewei Xin lei qu Aijun Huang School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Materials University of ManchesterOxford RoadManchester M139PLUK Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Northwest Institute for Non-ferrous Metal Research Xi'an 710016China Department of Materials Science and Engineering Monash UniversityClayton.VIC 3800Australia

The compression behavior of a Ti-23.1 Nb-2.0 Zr-1.00(at.%)alloy was investigated at strain rates from 0.1 s_(-1) to 1000 s_(-1) and temperatures from 100℃to 200℃on a Gleeble 3800 system and Split Hopkinson Pressure Bar(SHPB)compressive *** microscopy,electron backscatter diffraction(EBSD),Xray diffraction(XRD)and transmission electron microscopy(TEM)were employed to characterize the microstructure evolution during the *** deformation phenomena,including dislocation slip,twinning of both{332}{113)and{112}{111}modes,stress-inducedα"martensite(SIMα")and stress-inducedω(SIω)transformations,were *** preferred activation of twinning and SIωtransfo rmations was observed in the sample compressed at lower temperatures and/or higher strain *** underlying mechanism is that twinning and stress induced phase transfo rmations are attribute to higher stress concentrations atβgrain boundaries and additional energy supplied by a higher strain rate,as well as high stacking fault energy because of higher temperature.

关键词： Titanium alloy Plastic deformation Strain rate Temperature Microstructure

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Dynamic Optimization of Feedforward Automatic Gauge Control Based on Extended Kalman Filter

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Journal of Iron and Steel Research International 2008年第2期15卷 39-42页

作者： YANG Bin-hu YANG Wei-dong CHEN Lian-gui qu lei School of Information Engineering University of Science and Technology Beijing Beijing 100083 China

Automatic gauge control is an essentially nonlinear process varying with time delay,and stochastically varying input and process noise always influence the target gauge control *** improve the control capability of feedforward automatic gauge control,Kalman filter was employed to filter the noise signal transferred from one stand to *** linearized matrix that the Kalman filter algorithm needed was concluded;thus,the feedforward automatic gauge control architecture was dynamically *** theoretical analyses and simulation show that the proposed algorithm is reasonable and effective.

关键词： automatic gauge control feedforward control extended Kalman filter

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Sky Blue and Yellow Cluster Light-Emitting Diodes Based on Asymmetric Cu_(4)l_(4) Nanocubes

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Research 2023年第1期2022卷 517-524页

作者： Nan Zhang lei qu Huan Hu Ran Huo Yushan Meng Chunbo Duan Jing Zhang Chunmiao Han Guohua Xie Hui Xu Key Laboratory of Functional Inorganic Material Chemistry(Ministry of Education)and School of Chemistry and Material Science Heilongjiang University74 Xuefu RoadHarbin 150080P.R.China Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of ChemistryWuhan UniversityWuhan 430072P.R.China

Controllably optimizing excited-state characteristics is crucial for luminescent nanoclusters but remains a formidable ***,we report an effective"ligand-induced asymmetrization"strategy for constructing thermally activated delayed fluorescence-featured cubic Cu4l4 nanoclusters with asymmetric configurations,named[tBCzDBFDP]_(2)Cu_(4)l_(4) and[PTZDBFDP]_(2)Cu_(4)l_(4).Through changing 3,6-di-tert-butyl-carbazole(tBCz)to phenothiazine(PTZ)with a stronger electron-donating effect,emission color is tuned from greenish blue of[tBCzDBFDP]_(2)Cu_(4)l_(4) to yellow of[PTZDBFDP]_(2)Cu_(4)l_(4),as well as the triplet locally excited state of the former to the triplet charge transfer state of the ***-correlated spectroscopic investigation indicates that in terms of triplet quenching suppression,[tBCzDBFDP]_(2)Cu_(4)l_(4) is superior to[PTZDBFDP]_(2)Cu_(4)l_(4),in accord with the stabilities of their triplet locally excited state and triplet charge transfer *** a consequence,these asymmetric Cu4l4 nanocubes endowed their cluster light-emitting diodes with the external quantum efficiencies beyond 12%for sky blue and 8%for *** results suggest the significance and effectiveness of ligand engineering for optoelectronic nanoclusters.

关键词： excited asymmetric latter

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Evaluating serum CXCL12,sCD22,Lp-PLA2 levels and ratios as biomarkers for diagnosis of Alzheimer's disease

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World Journal of Psychiatry 2024年第3期14卷 380-387页

作者： Zeng-Ling Liu Fei-Fei Hua lei qu Na Yan Hui-Fang Zhang Department of Neurology Dongying People's HospitalDongying 257000Shandong ProvinceChina

BACKGROUND Grasping the underlying mechanisms of Alzheimer's disease(AD)is still a work in progress,and existing diagnostic techniques encounter various ***,the discovery of dependable biomarkers is essential for early detection,tracking the disease's advancement,and steering treatment *** To explore the diagnostic potential of serum CXCL12,sCD22,Lp-PLA2,and their ratios in AD,aiming to enhance early detection and inform targeted treatment *** The study was conducted in Dongying people's Hospital from January 2021 to December *** included 60 AD patients(AD group)and 60 healthy people(control group).Using a prospective case-control design,the levels of CXCL12,sCD22 and Lp-PLA2 and their ratios were detected by enzyme-linked immunosorbent assay kit in the diagnosis of *** differences between the two groups were analyzed by statistical methods,and the corresponding ratio was constructed to improve the specificity and sensitivity of *** Serum CXCL12 levels were higher in the AD group(47.2±8.5 ng/mL)than the control group(32.8±5.7 ng/mL,P<0.001),while sCD22 levels were lower(14.3±2.1 ng/mL vs 18.9±3.4 ng/mL,P<0.01).Lp-PLA2 levels were also higher in the AD group(112.5±20.6 ng/mL vs 89.7±15.2 ng/mL,P<0.05).Significant differences were noted in CXCL12/sCD22(3.3 vs 1.7,P<0.001)and Lp-PLA-2/sCD22 ratios(8.0 vs 5.2,P<0.05)between the *** operating characteristic analysis confirmed high sensitivity and specificity of these markers and their ratios in distinguishing AD,with area under the curves ranging from CONCLUSION Serum CXCL12 and Lp-PLA2 levels were significantly increased,while sCD22 were significantly decreased,as well as increases in the ratios of CXCL12/sCD22 and Lp-PLA2/sCD22,are closely related to the onset of *** biomarkers and their ratios can be used as potential diagnostic indicators for AD,providing an important clinical reference for early intervention and treatment.

关键词： Alzheimer's disease Biomarkers CXCL12 sCD22 Lp-PLA2

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Recently developed strategies to restrain dendrite growth of Li metal anodes for rechargeable batteries

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Rare Metals 2020年第6期39卷 616-635页

作者： Kai-Chao Pu Xin Zhang Xiao-lei qu Jian-Jiang Hu Hai-Wen Li Ming-Xia Gao Hong-Ge Pan Yong-Feng Liu State Key Laboratory of Silicon Materials and School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China School of Chemistry and Chemical Engineering Yantai UniversityYantai 264005China Platform of Inter/Transdisciplinary Energy Research(Q-PIT) International Research Center for Hydrogen EnergyInternational Institute for Carbon-Neutral Energy Research(I2CNER)Kyushu University744 MotookaNishi-kuFukuoka 819-0395Japan

Lithium metal has been regarded as one of the most promising anode materials for high-energy-density batteries due to its extremely high theoretical gravimetric capacity of 3860 mAh·g^-1 along with its low electrochemical potential of-3.04 ***,uncontrollable Li dendrite growth and repetitive destruction/formation of the solid electrolyte interphase layer lead to poor safety and low Coulombic efficiencies(CEs)for long-term utilization,which largely restricts the practical applications of lithium metal *** this review,we comprehensively summarized important progresses achieved to date in suppressing Li dendrite *** for protection of Li metal anodes include designing porous structured hosts,fabricating artificial solid electrolyte interface(SEI)layers,introducing electrolyte additives,using solid-state electrolytes and applying external *** protection of Li metal anodes can be achieved by regulating the stripping and deposition behaviours of Li ***,the challenges remaining for lithium metal battery systems and future perspectives for Li metal anodes in practical applications are outlined,which are expected to shed light on future research in this field.

关键词： Rechargeable batteries Anode materials Lithium metal Dendrite growth Coulombic efficiency

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Portal venous arterialization resulting in increased portal inflow and portal vein wall thickness in rats

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World Journal of Gastroenterology 2008年第43期14卷 6681-6688页

作者： Wen-Gang Li Yong-Liang Chen Jing-Xi Chen lei qu Bin-Dang Xue Zhi-Hai Peng Zhi-Qiang Huang Department of Hepatobiliary Pancreas and Vessel Surgery Xiamen First Hospital Attached Fujian Medical University Xiamen 361003 Fujian Province China Institute of Hepatobiliary Surgery General Hospital ofPLA Beijing 100853 China Image Processing Centre Beijing University of Aeronautics and Astronautics Beijing 100083 China

AIM： To explore the influence of portal vein hemodynamic changes after portal venous arterialization （PVA） on peribiliary vascular plexus （PVP） morphological structure and hepatic pathology, and to establish a theoretical basis for the clinical application of PVA. METHODS： Sprague-Dawley rats were randomly divided into control and PVA groups. After PVA, hemodynamic changes of the portal vein and morphological structure of hepatohilar PVP were observed using Doppler ultrasound, liver function tests, ink perfusion transparency management and three-dimensional reconstruction of computer microvisualization, and pathological examination was performed on tissue from the bile duct wall and the liver. RESULTS： After PVA, the cross-sectional area and blood flow of the portal vein were increased, and the increase became more significant over time, in a certain range. If the measure to limit the flow in PVA was not adopted, the high blood flow would lead to dilatation of intrahepatic portal vein and its branches, increase in collagen and fiber degeneration in tunica intima. Except glutamic pyruvic transaminase （GPT）, other liver function tests were normal. CONCLUSION： Blood with a certain flow and oxygen content is important for filling the PVP and meeting the oxygen requirement of the bile duct wall. After PVA, It is the anatomic basis to maintain normal morphology of hepatohilar bile duct wall that the blood with high oxygen content and high flow in arterialized portal vein may fill PVP by collateral vessel reflux. A adequate measure to limit blood flow is necessary in PVA.

关键词： Peribiliary vascular plexus Portal venous arterialization Liver transplantation Bile duct neoplasms Three-dimensional reconstruction Hemodynamics

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EFFECT OF HOMOGENIZATION PROCESSING ON MICROSTRUCTURE AND PROPERTIES OF Ti-34Al-2Mn ALLOY

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中国有色金属学会会刊：英文版 1993年第4期3卷 50-55页

作者： lei,Changming qu,Xuanhui Huang,Baiyun Xiong,Xiang Powder Metallurgy Research Institute,Central South University of Technology,Changsha 410083,China

A γ-TiAl base alloy with the composition of Ti-34Al-2Mn（wt--%）was prepared by consum-able electrode arc-melting *** effect of homogenization processing following arc-melt-ing on its microstructure and mechanical properties was *** emphases were placedon the microstructural evolution during solidification and homogenization,and the relationship be-tween microstructure and *** has been determined that the samples annealed at 900℃for 20 h exhibit the best ductility compared with those treated at other temperatures up to 1100℃,and they have a mixed structure of equiaxed grain of γ-TiAl single phase and some prima-ry lamellar grains which include three types of interfaces,i.e.,α2/γ,/γ/γS,γ/γT,maintainingspecific orientaion relationships between both *** ductility improvement is believed to be as-sociated with existence of suitable amount of α2-Ti3Al phase and the refinement of grains ob-tained at 900℃.

关键词： Ti-34Al-2Mn Alloy homogenization microstructure properties

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多变量非线性厚度-活套系统的鲁棒逆控制

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控制理论与应用 2009年第5期26卷 562-566页

作者：曲蕾王京北京科技大学信息工程学院北京100083

针对典型的多变量、强耦合、不确定厚度-活套非线性系统,提出了一种基于逆系统理论的非线性解耦鲁棒控制策略.建立了厚度-活套非线性系统动态模型,应用该策略实现了厚度-活套系统的反馈线性化解耦,并针对伪线性系统的未建模动态和外界... 详细信息

针对典型的多变量、强耦合、不确定厚度-活套非线性系统,提出了一种基于逆系统理论的非线性解耦鲁棒控制策略.建立了厚度-活套非线性系统动态模型,应用该策略实现了厚度-活套系统的反馈线性化解耦,并针对伪线性系统的未建模动态和外界干扰推导了保证厚度系统鲁棒稳定性和鲁棒性能的约束条件,设计出抗干扰、鲁棒性强的反馈控制器.仿真效果表明鲁棒逆系统策略对厚度-活套多变量强耦合非线性系统控制的有效性.

关键词：厚度-活套非线性模型逆系统解耦控制鲁棒性

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Research on the Development of Daur Ethnic Education under the Influence of Big Data

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International Journal of Technology Management 2015年第9期 26-28页

作者： ChuangangWu lei Wang Jiaojiao qu MuDanJiang Normal University MuDanJiang City HeiLongJiang ProvinceChina 157011

In this paper, we conduct research on the development of Daur ethnic education under the influence of big data. Life in the river valley of Daur ethnic which is a nationality has a long history, splendid culture and the national spirit of national self-confidence, the foundation of national culture has a strong self-confidence. Combining the concept of big data and data analysis technique to the Daur ethnic education will largely enhance the result of the current education pattern. The survey of the research indicated that we should pay attention to the precious data captured.

关键词： Daur Ethnic Big Data Education Development Review and Survey.

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