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文献小站(国内外文献免费下载)
zhupingcug 2018-9-2 19:34
可以免费检索下载国内外文献的网站 文献小站, http://www.sci-hub.ac.cn/ 包括web of science, wiley, spring等国际数据库,中国知网(cnki),维普(vip)等国内数据库的文献和书籍。
个人分类: 文献检索|8720 次阅读|0 个评论
遥感数据
热度 1 YF2015 2016-12-13 09:28
全球各国shape数据下载,包括矢量要素、dem数据、遥感图片,免费,精度不知。http://biogeo.berkeley.edu/bgm/gdata.php 全球各国eoo格式数据下载,包括矢量要素、dem数据、遥感图片,需付费,也有部分类型数据免费,精度不知道。http://data.geocomm.com/ 1.公开的DEM数据SRTM3 SRTM数据主要是由美国太空总署(NASA)和国防部国家测绘局(NIMA)联合测量的,SRTM 的全称是Shuttle Radar Topography Mission,即航天飞机雷达地形测绘使命,2000年2月 11日上午11时44分,美国“奋进”号航天飞机在佛罗里达州卡那维拉尔角的航天发射中心发射升空,“奋进”号上搭载的SRTM系统共计进行了222小时23分钟的数据采集工作,获取北纬60度至南纬56度之间,面积超过1.19亿平方公里的9.8万亿字节的雷达影像数据,覆盖全球陆地表面的80%以上,该计划共耗资3.64亿美元,获取的雷达影像数据经过两年多的处理,制成了数字地形高程模型,该测量数据覆盖中国全境。 SRTM数据每经纬度方格提供一个文件,精度有1 arc-second和3 arc-seconds两种,称作SRTM1和SRTM3,或者称作30M和90M数据,SRTM1的文件里面包含3601*3601个采样点的高度数据,SRTM3的文件里面包含1201*1201个采样点的高度数据。目前能够免费获取中国境内的 SRTM3文件,是90米的数据,每个90米的数据点是由9个30米的数据点算术平均得来的。 SRTM数据下载的地址是:http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp。我国境内的数据在Eurasia目录下,每经纬度方格一个文件,文件命名方法是X1X2X3X4.hgt.zip,X1是N或 S表示南北,X2是下方纬度数,X3是E或W表示东西,X4是左方经度数。 Documentation目录下有这些数据的介绍。 2.公开的三波段遥感合成图像GeoCover GeoCover是使用LANDSAT5卫星在1990年左右采集的数据合成的,LANDSAT5是美国太空总署(NASA)于1984年3月1日发射的地球观测卫星。LANDSAT5 TM(Thematic Mapper)有7个波段: 波段1:0.45–0.52um蓝绿波段 波段2:0.52- 0.60绿色波段 波段3:0.63 - 0.69红色波段 波段4:0.76-0.90um近红外波段 波段7:2.08-2.35um短红外波段 其中波段1-5和7为可见光及近红外波段,分辨率为30米,波段6为热红外光分辨率为120 米。LANSAT5每景扫描耗时约26.31秒,覆盖185公里×170公里,扫描影像重叠率超过10%。 GeoCover使用了742波段分别作为红色、绿色和蓝色进行了假彩色合成,也许如果使用1、 2、3三种可见光波段合成的话会使我们看起来更舒服一些,不过我们现在能拿到的只能是这种742的合成假彩,通过观察发现其中的绿色通道对地形有较好的反应,实际操作中可以将这种假彩图像反相取其中的绿色通道来作为地形底图。GeoCover图像文件使用WGS84 UTM坐标,采用TIFF或MrSID格式分发,图像中每个像素28.5M-30M,一般以28.5M计算。 GeoCover的下载地址是:https://zulu.ssc.nasa.gov/mrsid。可从全球地图页面上选择 你需要的区域下载。GeoCover文件每个在东西方向跨越一个UTM分区,在南北方向跨越5个纬度,东西提供50KM的富裕,南北提供1KM的富裕。文件命名方法是X1-X2-X3.tar,X1是N或S表示南北,X2是UTM带数,X3下方经度数。 3.其他渠道 NIMA地名数据库:可以提供大多数国家的地名英文拼写及坐标,包含中国境内大约6万个地方, 可以在以下地址下载中国地名库:ftp://ftp.nga.mil/pub/gns ;data/cn.zip。 SPACEIMAGING 1M分辨率卫星图像预览:虽然只能免费得到预览图像,但其分辨率也已经不算太低了,并且可以随预览图提供图像的一些数据信息,非常方便将图像用工具软件进行较正, 下载地址:http://www.spaceimaging.com/default.htm ; 国家基础地理信息系统:国家基础地理信息系统全国1:400万数据库全部数据均可浏览。其中,中国国界、省界、地市级以上居民地、三级以上河流、主要公路和主要铁路等数据可以自由下载。 下载地址为:http://nfgis.nsdi.gov.cn/nfgis/chinese/c ;xz.htm。可以在这里预先浏览供下 载的数据内容有: (1)国界 国界与省界 地市级以上居民地 一级河流 三级以上河流主要公路 主要铁路 (2)地级以上境界 县级以上境界 县级以上居民地 四级以上河流 五级以上河流 从公开发行的地图上获取数据信息:可以直接从某些电子地图提取到不错的数据,也可以从纸介地图上测量或数字化某些信息,目前正在进行这方面的试验,已取得一定量数据。
个人分类: 遥感|5236 次阅读|1 个评论
神经科学研究最新文章分享
热度 1 WileyChina 2016-6-14 15:22
Free access to top neuroscience research Stroke Awareness Inside Mental Health A Physiological Look at Neuroscience The Best of the Best! New Current Protocols News Connect With Us 限时30天,免费获取顶级研究论文! 专注于有关中风的研究成果 Annals of the New York Academy of Sciences Advances in stroke prevention Read 阅读有关中风的调整治疗和行为风险因素的最新进展,包括房颤,高血压,血管重建术和高脂血症,还有包括新型口服抗凝血剂,抗血小板治疗,降低动脉粥样硬化风险因子的有效策略。 Glia Targeted activation of CREB in reactive astrocytes is neuroprotective in focal acute cortical injury 外伤性脑损伤( TBI )急性损伤的临床挑战是要制止在损伤后几小时或几天内可能发生的迟发性神经元的损失。阅读激活 CREB 依赖转录至活性星形胶质细胞是如何防止在实验性 TBI 之后大脑皮层继发性损伤的。 Journal of Neurochemistry The next step in translational research: lessons learned from the first preclinical randomized controlled trial 转化研究总是被临床前研究的低产出性和无数次临床实验的失败所阻碍。国际学会提出用多中心试验作为中间步骤来克服此“转化路障”。作者们近日首次开展了这样的将临床研究设计的关键因素应用到临床前研究的随机对照实验。以下是其中的一些研究发现。 Brain and Behavior Selective serotonin reuptake inhibitors to improve outcome in acute ischemic stroke: possible mechanisms and clinical evidence CNS Neuroscience Therapeutics Splenic Responses in Ischemic Stroke: New Insights into Stroke Pathology Developmental Medicine Child Neurology Virtual Issue: Paediatric Stroke European Journal of Neurology Cryptogenic stroke Hippocampus Cognitive state following mild stroke: A matter of hippocampal mean diffusivity Journal of Neuroscience Research An optimized dosing regimen of cimaglermin (neuregulin 1β3, glial growth factor 2) enhances molecular markers of neuroplasticity and functional recovery after permanent ischemic stroke in rats Journal of Sleep Research Topographic sleep EEG changes in the acute and chronic stage of hemispheric stroke ▲ Return to top 精神健康专题 Developmental Neurobiology Delays in GABAergic interneuron development and behavioral inhibition after prenatal stress 产前压力会影响后代的行为,认知和精神结果。由于 GABA 能系统对于正常发育和精神疾病的重要性,产前压力对于 GABA 能神经元的影响已经在动物模型中被研究了。 Genes, Brain and Behavior The lasting impact of early-life adversity on individuals and their descendants: potential mechanisms and hope for intervention 作者回顾了一些“压力表现型”,重点放在可能表明长期的精神健康状况风险的中介因子,比如恐惧调节系统发育的改变。阅读论文,了解更多可能阻止压力表现型周期的多种疗法的潜力。 Biotechnology Journal Pro-region engineering for improved yeast display and secretion of brain derived neurotrophic factor European Journal of Neurology A study on the association between infectious burden and Alzheimer's disease FEBS Letters Preferential interaction of the Alzheimer peptide Aβ-(1–42) with Omega-3-containing lipid bilayers: structure and interaction studies Hippocampus Abnormal hippocampal structure and function in clinical anxiety and comorbid depression Journal of Comparative Neurology Developmental expression of the neuroligins and neurexins in fragile X mice Journal of Neuroscience Research Zebrafish models of major depressive disorders Psychiatry and Clinical Neurosciences Special Issue Focusing on Mental Health WIREs Cognitive Science The evolutionary diagnosis of mental disorder ▲ Return to top 从社会学的角度看神经科学 The Journal of Physiology L-type Ca2+ channels in mood, cognition and addiction: Integrating human and rodent studies with a focus on behavioural endophenotypes Brain Cav1.2 and Cav1.3 L-type Ca2+ channels play key physiological roles in various neuronal processes that contribute to brain function. 期刊 The Journal of Physiology 期待您的研究成果! 点击以下链接查看更多信息. K+ Channels and Cardiac Electrophysiology The Biomedical Basis of Elite Performance Advances in Calcium Signalling Experimental Physiology Tracks through the genome to physiological events 作者讨论了可获取几种物种(包括人类在内)的包含细胞特异性,脑区域特异性和组织特异性的全基因组数据集的工具,并展示了如何在全基因组数据库中获取这些数据,以及它们在生理学上的巨大价值。 Physiological Reports Motor planning poststroke: impairment in vector-coded reach plans 健康个体同时使用矢量到达控制编码( vector-coded reach plans ) 来控制运动的方向和程度,以及目到达控制编码( target-coded reach plans ) 控制希望到达的终点位置。找出这些矢量和目标达到规划码( vector and target reach-planning codes ) 是否在中风后受到了不同的影响。 Comprehensive Physiology Fetal and Neonatal HPA Axis The Insular Cortex and the Regulation of Cardiac Function ▲ Return to top The Best of the Best! 点击以下链接,从特刊中下载更多开放获取内容: Translational Neuroscience in Psychiatry Multisensory Processing The developmental origins of complex behavior and neuropsychiatric disease Cortical Evolution Neuroinflammation: A Two Way Street Directing CNS Injury and Repair Synucleinopathies: past, present and future The Amygdala: Dysfunction, Hyperfunction, and Connectivity Brain Energy Metabolism: How Energy Metabolism Shapes Brain Function Neurobiology Novel translational approaches for improving drug discovery efforts in chronic pain Mechanisms of development and maintenance of dopaminergic neurons Definition and Differentials Journal of Neurochemistry 即将推出特刊 :帕金森症 ▲ Return to top 聚焦实验室指南中的神经科学: Measuring Motivation and Reward‐Related Decision Making in the Rodent Operant Touchscreen System The Membrane Marker mCLING Reveals the Molecular Composition of Trafficking Organelles Real‐time Recordings of Migrating Cortical Neurons from GFP and Cre Recombinase Expressing Mice ▲ Return to top ▲ Return to top
个人分类: Life Science|1780 次阅读|0 个评论
本年度神经科学最热文章现在可以免费下载
WileyChina 2016-6-3 09:35
Top Trending Articles this Year in Neurology 本年度神经科学最热门文章免费下载: Obstructive sleep apnea is associated with low GABA and high glutamate in the insular cortex Journal of Sleep Research Perimenopause and Menopause Are Associated With High Frequency Headache in Women With Migraine Headache: The Journal of Head Asthma is a risk factor for new onset chronic migraine Headache: The Journal of Head Face Pain Factors contributing to delay in diagnosis of Guillain‐Barré Syndrome and impact on clinical outcome Muscle Nerve Sleep and academic performance in later adolescence: results from a large population‐based study Journal of Sleep Research Genes and Environment in Multiple Sclerosis project: A platform to investigate multiple sclerosis risk Annals of Neurology Peripheral Synucleinopathy in Early Parkinson's Disease: Submandibular Gland Needle Biopsy Findings Movement Disorders Real‐world data on eslicarbazepine acetate as add‐on to antiepileptic monotherapy Acta Neurologica Scandinavica Genetic effects on sleep/wake variation of seizures Epilepsia Is in vivo amyloid distribution asymmetric in primary progressive aphasia? Annals of Neurology Comparisons of Ultrasound-estimated Intramuscular Fat with Fitness and Health Indicators Muscle Nerve Contraceptive practices of women with epilepsy: Findings of the epilepsy birth control registry Epilepsia The influence of socioeconomic status on health resource utilization in pediatric epilepsy in a universal health insurance system. Epilepsia Intelligence after traumatic brain injury: meta‐analysis of outcomes and prognosis European Journal of Neurology A Survey of Headache Medicine Physicians on the Likeability of Headaches and Their Personal Headache History Headache: The Journal of Head Face Pain Impact of medical academic genealogy on publication patterns: An analysis of the literature for surgical resection in brain tumor patients Annals of Neurology Predictors and signatures of recovery from neglect in acute stroke Annals of Neurology Decreased Anti-Parkinson's Therapy during Hospitalization due to Infectious Diseases is Associated with Worse Prognosis CNS Neuroscience Therapeutics Migraine and the Risk of Suicide Headache: The Journal of Head Face Pain Effect of natalizumab on brain atrophy and disability progression in multiple sclerosis patients over 5 years European Journal of Neurology Altmetric是什么? Altmetric 是跟踪科研成果获得的关注度的系统,其数据有三个主要来源:社交媒体、传统媒体与网络参考管理工具(online reference managers)。 What are you waiting for? Submit your research to one of our neurology journals and give them something to talk about!
个人分类: Life Science|1683 次阅读|0 个评论
化学工程:能源科技特刊
WileyChina 2016-5-19 11:03
化学工程 本期能源科技特刊 现可免费下载 2016 年第一期 通过展示一批非常有分量的高质量论文 开启了 能源科技的第四年。 本期的主要内容有能源科技 中的突出议题,及去年在卡尔斯鲁厄举办的科学技术 大 会。 我们希望每个人都能从此刊中获 益。 免费阅读本期特 刊 A Sustainable Energy Future —Performed by Science and Technology Dr.Karl-Friedrich Ziegahn Nitrogen-Based Alternative Fuels: Progress and Future Prospects Dr.Alon Grinberg Dana,Dr.Gennady E.Shter and Prof. Gideon S.Grader Decarbonizing the Global Energy System: An Updated Summary of the IPCC Report on Mitigating Climate Change Prof.Dr.Thomas Bruckner Energy Efficiency of Buildings: The Aspect of Embodied Energy Maria Balouktsi and Prof.Thomas L ützkendorf Improvement of Fischer –Tropsch Synthesis through Structuring on Different Scales Prof.Dr.Robert G üttel and Prof.Dr.Thomas Turek Influence of Syngas Composition on the Kinetics of Fischer –Tropsch Synthesis of using Cobalt as Catalyst Ferdinand Pöhlmann and Prof.Dr.Andreas Jess Fuel Electrode Carbon Corrosion in High Temperature Polymer Electrolyte Fuel Cells —Crucial or Irrelevant? Tom Engl, Dr.Lorenz Gubler and Prof.Thomas J.Schmidt Use of Surfactants for Continuous Operation of Aqueous Electrochemical Flow Capacitors Juhan Lee, Dr.Daniel Weingarth, Dr.-Ing.Ingrid Grobelsek and Prof.Dr.Volker Presser Li/air Flow Battery Employing Ionic Liquid Electrolytes Lorenzo Grande, Anders Ochel, Dr. Simone Monaco, Prof. Marina Mastragostino,Dr.Dino Tonti, Dr.Pablo Palomino, Dr.Elie Paillard and Prof. Stefano Passerini Flexible Operation of Fixed-Bed Reactors for a Catalytic Fuel Synthesis —CO 2 Hydrogenation as Example Reaction Mar ía Iglesias González, Hilko Eilers and Prof.Georg Schaub Optimization of Medium-Deep Borehole Thermal Energy Storage Systems Daniel Otto Schulte, Dr.Wolfram R ühaak, Dr.Sergey Oladyshkin,Bastian Welsch and Prof.Dr.Ingo Sass A European Perspective: Potential of Grid and Storage for Balancing Renewable Power Systems Stefan Weitemeyer, Dr.David Kleinhans, Lukas Wienholt, Dr.Thomas Vogt and Prof.Dr.Carsten Agert Energy Storage and Transportation Based on Solar Irradiation-Aided CaO-Looping Jonas Obermeier, Benjamin M üller, Dr.Karsten Müller and Prof. Dr.Wolfgang Arlt Examination and Optimization of a Heating Circuit for Energy-Efficient Buildings Philipp Pöttgen, Thorsten Ederer, Lena Altherr, Prof. Dr. Ulf Lorenz and Prof. Dr.Peter F.Pelz Information and Communication Technology in Energy Lab 2.0: Smart Energies System Simulation and Control Center with an Open-Street-Map-Based Power Flow Simulation Example Prof. Dr. Veit Hagenmeyer, Dr. H üseyin Kemal Çakmak, Dr. Clemens Düpmeier, Dr.Timm Faulwasser, Dr.Jörg Isele, Dr.Hubert B.Keller, Dr.Peter Kohlhepp, Dr.Uwe Kühnapfel, Dr.Uwe Stucky, Simon Waczowicz and Prof.Dr.Ralf Mikut Virtual Storages as Theoretically Motivated Demand Response Models for Enhanced Smart Grid Operations Simon Waczowicz, Dr.Markus Reischl, Stefan Klaiber, Dr.Peter Bretschneider, Irina Konotop, Prof.Dr.Dirk Westermann, Prof.Dr.Veit Hagenmeyer and Prof.Dr.Ralf Mikut High-Precision Modeling and Optimization of Cogeneration Stephanie Chen, Dr.Dennis Wassel and Prof.Dr.Christof B üskens Materials for Advanced Ultra-Supercritical Fossil-Fuel Power Plants: Materials Properties, Microstructure, and Component Behavior Dr. Magdalena Speicher, Daniel Hueggenberg, Dr. Andreas Klenk, Stefan Zickler and Klaus Metzger Methanol for Renewable Energy Storage and Utilization Dr. Konstantin Räuchle, Dr.Ludolf Plass, Dr.Hans-J ürgen Wernicke and Prof. Dr.Martin Bertau Facile Synthesis of Carbon –Metal Fluoride Nanocomposites for Lithium-Ion Batteries Dr.M.Anji Reddy, Dr.Ben Breitung, Dr.Clemens Wall,Shivam Trivedi, Dr.Venkata Sai Kiran Chakravadhanula, Dr. M. Helen and Prof.Dr.Maximilian Fichtner Membrane Electrode Assemblies for Water Electrolysis using WO3-Supported Ir x Ru 1-x O 2 Catalysts Nils Baumann, Dr.Carsten Cremers, Dr.Karsten Pinkwart and Dr.Jens T übke Production and Storage of Gasifiable Slurries Based on Flash-Pyrolyzed Straw Thomas Nicoleit, Prof.Dr.Nicolaus Dahmen and Prof.Dr.Jörg Sauer Artificial Leaf for Water Splitting Based on a Triple-Junction Thin-Film Silicon Solar Cell and a PEDOT:PSS/Catalyst Blend Dr. Peter Bogdanoff, Dr.Diana Stellmach, Dr.Onno Gabriel, Dr.Bernd Stannowski, Prof.Dr.Rutger Schlatmann, Prof. Dr.Roel van de Krol and Prof.Dr.Sebastian Fiechter
个人分类: Physical Science|2633 次阅读|0 个评论

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