分享到:

Studies on the SFD Properties of Nd_xGd_(1-x)Ca_4O(BO_3)_3 Solid-solution Crystal

1 Introduction  Inthepastfewyears,smallsizedSFDlaserhasattractedgreatattentions.Laserdiode(LD)pumpedsolidstatelasershavebeenfoundveryusefulinthefieldsofmilitary,industry,medicaltreatmentandscientificresearchesduetotheadvantagesofhighstability,compactness,highefficiency,longlifetimeandlowcost.Untilnow,NYABshowsgoodSFDlaserpropertiesat530nm.However,italsoshowssignificantselfabsorptionat530nmwhichlimitsitsapplications.A...  (本文共5页) 阅读全文>>

《地学前缘》2000年S1期
地学前缘

CARBONATITES FROM THE EASTERN HIMALAYAN SYNTAXIS: PETROLOGY AND TECTONIC IMPLICATIONS

CARBONATITES FROM THE EASTERN HIMALAYAN SYNTAXIS: PETROLOGY AND TECTONIC IMPLICATIONS1 LiuYan ,ZhongDalai.Petrologyofhigh pressuregranulitesfromtheeasternHim...  (本文共2页) 阅读全文>>

《IMP & HIRFL Annual Report》2000年00期
IMP & HIRFL Annual Report

σ-LET Curve of IDT71256 Obtained with Ions Accelerated by HIRFL

Singleeventeffect(SEE)occurredinmicroelectronicsusedinspacecanbestudiedeffectivelybyusingheavyionirradiations.Singleeventupset(SEU)crosssection(J)versuslinearenergytransfer(LET)valuecurve,whichcharacterizesthedeviceresponse,isusuallyappliedtopredictSEUrateinorbit.SoonebasicaimofheavyionirradiationistodeterminetheSEUaasafunctionofLETvalue.ThisrequiresthattheLETvalueshouldcoveraspanofseveraltoseveraltensMeV.cm2/mg.Inth...  (本文共1页) 阅读全文>>

《Journal of Systems Science and Systems Engineering》2000年03期
Journal of Systems Science and Systems Engineering

A Modeling and Decision Making Based on Evolution

1 IntroductionTherearemanydifficultiesinquantitativeresearchforsustainabledevelopmentsystem .Sus tainabledevelopmentsystemconsistsofanumberofsubsystemsthatareinteractiveeachother ,whichisnonlinearandlong term .Itsobjectsandconditionsareentanglementwithmajorun certainties ,orlackofunderstanding ,muchofitperhapsalmostunknowable .Certainsystemsmaybetoocomplicatedtobequantifiedandwemaynevergathersufficientdata .Thetradit...  (本文共8页) 阅读全文>>

《中国继续医学教育》2019年02期
中国继续医学教育

宁夏某三甲医院近五年国家自然科学基金(NSFC)立项情况分析

是衡量一所三甲医院科研水平和研究实力的重要指标。宁夏某三甲医院作为一家综合性医疗机构,一直对国家自然科学基金申请工作非常重视,多年来已经形成了自己的一套申报程序。文章通过描述性统计分析方法,分析宁夏某三甲医院国家自然科学基金立项情况和现状,提出有效的激励方法,促进医院国家自然科学基金的可持续发展。为进一步提高医院及同类医疗机构获得国家自然科学基金的资助提供宝贵经验[1-2]。1对象和方法1.1对象统计资料来源于宁夏某三甲医院近五年(2013—2017年)立项的国家自然科学基金。1.2方法将所有立项国家自然科学基金按年度及类别进行分类,项目主持人按年龄、学历、性别、职称等进行分类,通过Excel表完成相关统计,主要采用描述性统计分析方法[3-5]。2结果与分析2.1项目主持人基本情况从性别结构看,男性高于女性。从年龄分布看,集中分布在41~50岁,说明这部分主持人多年在科学研究领域积累了一定前期基础和高质量研究成果。从职称构成看,...  (本文共3页) 阅读全文>>

《Science Foundation in China》2016年04期
Science Foundation in China

NSFC President Yang Wei Meets with RS President

On November 2,2016,NSFC President Yang Wei met with and hosted a lunch for Professor Venki Ramakrishnan,President of the Royal Society(RS).The two sides highly appraised the on-going collaboration on researcher exchange and the Newton Advanced Fellowship,and had a di...  (本文共1页) 阅读全文>>

扩展阅读: