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Water Science and Engineering 2012年第3期5卷 304-315页

作者： Bo QU Albert j. GABRIC j.ng-nan ZHU Dao-rong LIn Feng QIAn Min ZHAO School of Science Nantong University Nantong 226007 P R. China School of Environment Griffith University Brisbane 4111 Australia

The north Atlantic Oscillation （nAO） is one of the major causes of many recent changes in the Arctic Ocean. Generally, it is related to wind speed, sea surface temperature （SST）, and sea ice cover. In this study, we analyzed the distributions of and correlations between SST, wind speed, nAO, and sea ice cover from 2003 to 2009 in the Greenland Sea at 10°W to 10°E, 65°n to 80°n. SST reached its peak in july, while wind speed reached its minimum in july. Seasonal variability of SST and wind speed was different for different regions. SST and wind speed mainly had negative correlations. Detailed correlation research was focused on the 75~n to 80~n band. Regression analysis shows that in this band, the variation of SST lagged three months behind that of wind speed Ice cover and nAO had a positive correlation, and the correlation coefficient between ice cover and nAO in the year 2007 was 0.61 SST and nAO also had a positive correlation, and SST influenced nAO one month in advance. The correlation coefficients between SST and nAO reached 0.944 for the year 2005, 0.7 for the year 2008, and 0.74 for the year 2009 after shifting SST one month later. nAO also had a positive correlation with wind speed, and it also influenced wind speed one month in advance. The correlation coefficients between nAO and wind speed reached 0.783, 0.813, and 0.818 for the years 2004, 2005, and 2008, respectively, after shifting wind speed one month earlier.

关键词： correlation analysis," nAO SST," wind speed, ice cover Greenland Sea

Adaptive Design of Fluorescence Imaging Systems for Custom Resolution, Fields of View, and Geometries

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Biomedical Engineering Frontiers 2023年第1期4卷 260-273页

作者： Roujia Wang Riley j.Deutsch Enakshi D.Sunassee Brian T.Crouch nirmala Ramanujam Department of Biomedical Engineering Duke UniversityDurhamNCUSA Department of Pharmacology and Cancer Biology Duke University Medical CenterDurhamNCUSA

Objective and Impact Statement:We developed a generalized computational approach to design uniform,high-intensity excitation light for low-cost,quantitative fluorescence imaging of in vitro,ex vivo,and in vivo samples with a single ***:Fluorescence imaging is a ubiquitous tool for biomedical *** extensively modify existing systems for tissue imaging,increasing the time and effort needed for translational research and thick tissue *** modifications are applicationspecific,requiring new designs to scale across sample ***:We implemented a computational model to simulate light propagation from multiple *** a global optimization algorithm and a custom cost function,we determined the spatial positioning of optical fibers to generate 2 illumination *** results were implemented to image core needle biopsies,preclinical mammary tumors,or tumor-derived *** were stained with molecular probes and imaged with uniform and nonuniform ***:Simulation results were faithfully translated to benchtop *** demonstrated that uniform illumination increased the reliability of intraimage analysis compared to nonuniform illumination and was concordant with traditional histological *** computational approach was used to optimize the illumination geometry for the purposes of imaging 3 different fluorophores through a mammary window chamber *** specifically designed for intravital tumor imaging generated higher image contrast compared to the case in which illumination originally optimized for biopsy images was ***:We demonstrate the significance of using a computationally designed illumination for in vitro,ex vivo,and in vivo fluorescence *** illumination increased the reliability of intraimage analysis and enhanced the local contrast of biological *** approach is generalizable across light sources,biological appl

关键词： illumination Fluorescence image

REVIEW OF MULTIBODY CHARM AnALYSES

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Chinese Physics C 2016年第10期40卷 718-721页

作者： D. M. Asner j. Rademacker Pacific northwest national Laboratory University of Bristol

Kinematics ＆ Models The differential decay rate to a point s - （s1,..., sn） in n dimensional phase space can be expressed as

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内蒙古黄土高原秸秆还田对玉米农田土壤水热状况及产量的影响

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作物杂志 2019年第6期 83-89页

作者：刁生鹏高日平高宇任永峰赵沛义袁伟高学峰内蒙古农业大学农学院内蒙古呼和浩特010019 内蒙古自治区农牧业科学院资源环境与检测技术研究所内蒙古呼和浩特010031 内蒙古旱作农业重点实验室内蒙古呼和浩特010031 农业农村部内蒙古耕地保育科学观测实验站内蒙古呼和浩特011705 武川县农畜产品质量安全中心内蒙古呼和浩特011705 丰镇市农牧业局内蒙古乌兰察布012199

内蒙古清水河县地处黄土高原的边缘地带,沟壑纵横,是典型的北方干旱缺水地区。为明确秸秆翻耕还田对该区域玉米农田土壤蓄水保境效果及产量形成特性的影响,通过连续2年的田间小区试验,探究Okg/hm^2(CK)、3000kg/hm^2(SF1)、6000kg/hm^2(... 详细信息

内蒙古清水河县地处黄土高原的边缘地带,沟壑纵横,是典型的北方干旱缺水地区。为明确秸秆翻耕还田对该区域玉米农田土壤蓄水保境效果及产量形成特性的影响,通过连续2年的田间小区试验,探究Okg/hm^2(CK)、3000kg/hm^2(SF1)、6000kg/hm^2(SF2)和12000kg/hm^2(SF3)4种秸秆还田量下玉米农田全生育期地温、土壤水分、植株生长发育、水分利用效率和产量的变化规律。结果表明:秸秆还田促进了玉米叶面积指数提高和地上部生物量的积累,2018年,SF2处理叶面积指数和地上部干物质积累量较CK分别提高13.17%和10.70%;玉米全生育期0~30cm土层土壤温度、0~80cm土层土壤含水率、生育期贮水量和农田耗水量、水分利用效率和产量均表现为SF2>SF3>SF1>CK;2018年,SF1、SF2和SF3产量分别较CK提高了8.5%、11.4%和9.3%。秸秆翻耕还田措施能够显著改善玉米农田土壤水热状况、促进植株生长、提升子粒产量和水分利用效率,其中6 OOOkg/hm^2还田处理效果最好,可作为节水保墙栽培模式在内蒙古黄土高原推广应用。

关键词：秸秆还田玉米土壤温度土壤含水率水分利用效率产量

Complex patterns of environmental niche evolution in Iberian columbines (genus Aquilegia, ranunculaceae)

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journal of Plant Ecology 2015年第5期8卷 457-467页

作者： Rafael jaime julio M.Alcántara jesús M.Bastida Pedro j.Rey Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de JaénCampus Las Lagunillass/n.Jaén E-23071Spain

Aims This study explores the patterns of niche differentiation in a group of seven closely related columbines(genus Aquilegia,ranunculaceae)from the Iberian *** of these columbines are subject to complex patterns of divergent selection across environ-ments,which partly explain the taxonomic structure of the *** suggests the hypothesis that niche divergence must have occurred along the process of diversification of the *** We used maxEnt to build environmental niche models of seven subspecies belonging to the three species of Aquilegia present in the Iberian *** these models,we compared the envi-ronmental niches through two different approaches:Enmtools and multivariate *** FindingsmaxEnt distributions conformed closely to the actual distribution of the study *** methods failed to uncover any clear patterns of niche differentiation or conservatism in Iberian *** analyses indicate the existence of dif-ferentiation along altitudinal gradients and along a gradient of climatic conditions determined by the summer precipitation and ***,climatic conditions related to winter tem-perature and precipitation,as well as soil properties,were equally likely to show conservatism or *** complex patterns of niche evolution we found suggest that Iberian Columbines have not been significantly constrained by forces of niche conservatism,so they could respond adaptively to the fast and profound climate changes in the Iberian Peninsula through the glacial cycles of the Pleistocene.

关键词： Aquilegia ecological niche modelling niche divergence niche conservatism evolution maxEnt EnmTools

comparative evaluation of semen parameters in pre-and post-Hurricane Katrina human population

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Asian journal of Andrology 2015年第4期17卷 676-680页

作者： Caner Baran Wayne j Hellstrom Suresh C Sikka Department of Urology Tulane University School of Medicine New Orleans LA 70112 USA.

A natural disaster leading to accumulation of environmental contaminants may have substantial effects on the male reproductive system. Our aim was to compare and assess semen parameters in a normospermic population residing in the Southern Louisiana, USA area pre- and post-Hurricane Katrina. We retrospectively evaluated semen analyses data （n = 3452） of 1855 patients who attended the Tulane University Andrology/Fertility Clinic between 1999 and 2013. The study inclusion criteria were men whose semen analyses showed -〉 1.5 ml volume; _〉15 million ml1 sperm concentration; _〉39 million total sperm count; _〉40% motility; 〉30% morphology, with an abstinence interval of 2-7 days. After the inclusion criteria applied to the population, 367 normospermic patients were included in the study. Descriptive statistics and group-based analyses were performed to interpret the differences between the pre-Katrina （Group 1, 1999-2005） and the post-Katrina （Group 2, 2006-2013） populations. There were significant differences in motility, morphology, number of white blood cell, immature germ cell count, pH and presence of sperm agglutination, but surprisingly there were no significant differences in sperm count between the two populations. This long-term comparative analysis further documents that a major natural disaster with its accompanied environmental issues can influence certain semen oarameters （e.g.. motility and morphology） and, bv extension, fertility potential of the population of such areas.

关键词： environment Hurricane Katrina, new Orleans area normospermic infertile population retrospective semen analYSiS

锂电池用SnO基复合氧化物负极材料的研究(英文)

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内蒙古工业大学学报（自然科学版） 2002年第4期21卷 241-245页

作者：刘向东 j.Yang A.Hirano n.Imanishi Y.Takeda 内蒙古工业大学材料学院三重大学工学部分子素材工学科

将 Sn Cl2 、Fe Cl2 及 Cu Cl2 按一定比例进行混合并水解 ,得到 Sn基氧化物与其他惰性材料 ( Fe O,Cu O)的混合物 .将其在还原性气氛 ( Ar96% +H2 4% )中进行热处理 ,以获得具有高容量及更好的循环性能的负极材料 .研究结果表明 :热处... 详细信息

将 Sn Cl2 、Fe Cl2 及 Cu Cl2 按一定比例进行混合并水解 ,得到 Sn基氧化物与其他惰性材料 ( Fe O,Cu O)的混合物 .将其在还原性气氛 ( Ar96% +H2 4% )中进行热处理 ,以获得具有高容量及更好的循环性能的负极材料 .研究结果表明 :热处理温度对首次循环的库仑效率影响不大 ,但对循环稳定性有明显影响 .复合材料电极的可逆容量超过 3 81 m Ah/***-Fe体系在 40 0℃热处理 2 h,获得的材料具有优异的循环稳定性 ,但首次循环的库仑效率仅 2 4.91 % .

关键词：金属复合氧化物负极锂离子电池锂电池 SnO基复合氧化物负极材料研究

STUDY On SEVERAL InFLUEnCE FACTORS OF WELDED STRUCTURES In FATIGUE TEST

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STUDY ON SEVERAL INFLUENCE FACTORS OF WELDED STRUCTURES IN F...

Influence of temperature and salinity on hydrodynamic forces

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作者： Liu G n Zhang X H Zhao M H Liu Y j (nAMT Center Zhengzhou Research Institute of Mechanical Engineering)Zhang j S Liu T Tao Y Liu Y (CAD Center Zhengzhou Research Institute of Mechanical Engineering)

＜正＞ Three steel materials used widely in Chinese industry[l] have been chosen to study the fatigue characters of welded structures under various *** on the fatigue testing results that correspond to different stress ratios,loading methods,and dimensions of the welded joints,the relations among these influential factors are obtained mat may help predict the fatigue lives under an actual *** addition,the stress analyses are also made to find out the influence of the shape of a welding line on the fatigue life of a welded joint

关键词： Welded structures Fatigue Influence factors SCF S-n curves

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journal of Ocean Engineering and Science 2016年第4期1卷 325-336页

作者： A.Escobar V.negro j.S.López-Gutiérrez M.D.Esteban Technical University of Madrid C/Profesor Aranguren S/N28040 MadridSpain

The purpose of this study is to introduce an innovative approach to offshore engineering so as to take variations in sea temperature and salinity into account in the calculation of hydrodynamic *** this in mind,a thorough critical analysis of the influence of sea temperature and salinity on hydrodynamic forces on piles like those used nowadays in offshore wind farms will be carried *** influence on hydrodynamic forces occurs through a change in water density and viscosity due to temperature and salinity ***,the aim here is to observe whether models currently used to estimate wave forces on piles are valid for different ranges of sea temperature and salinity apart from observing the limit when diffraction or nonlinear effects arise combining both effects with the magnitude of the pile ***,specific software has been developed to simulate equations in fluid mechanics taking into account nonlinear and diffraction *** software enables wave produced forces on a cylinder supported on the sea bed to be *** study includes observations on the calculation model’s sensitivity as to a variation in the cylinder’s diameter,on the one hand and,on the other,as to temperature and salinity *** software will enable an iterative calculation to be made for finding out the shape the pressure wave caused when a wave passes over will have for different pile diameters and water with different temperature and salinity.

关键词： Sea temperature Salinity Hydrodynamic forces Wave action Offshore wind farms

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化学第1册自然界的物质第1版

化学第1册自然界的物质