搜索筛选:
搜索耗时0.0380秒,为你在102,277,784篇论文里面共找到 607,850篇文章
类      型:
[报纸论文] 作者:骆顺芝,, 来源:厦门大学 年份:2017
“内部控制”这一专业术语最早被提及是在1936年的美国,国外内部控制的发展较为先进和完善,而我国是在2008年才颁布的企业内部控制基本规范,行政事业单位内部控制的规范是201...
[期刊论文] 作者:张海宁,, 来源:中国民康医学 年份:2018
目的:分析孕妇血浆D-二聚体水平与孕期的相关性。方法:选取正常孕妇63名,根据孕期不同将其分为妊娠早期组、妊娠中期组和妊娠晚期组各21例。对比三组D-二聚体水平和D-二聚体...
[期刊论文] 作者:王存睿,蒙宇,马艳准,闫帅,, 来源:大连民族学院学报 年份:2012
采集了2001年和2007年的中国A股公司交叉持股数据,构建相应平台分析网络结构的统计参数。实验结果表明,中国A股交叉持股网络结构度分布服从幂率分布。通过对各节点的权重分析...
[期刊论文] 作者:, 来源:Biomedical and Environmental Sciences 年份:1997
Selenoprotein biosynthesis may not only be affected by the availability of selenium and the transcription rate of pertinent genes but also by the activity of co...
[期刊论文] 作者:李玮盛,邓冦奇,, 来源:家庭影院技术 年份:2011
[会议论文] 作者:HongzhiMen;MingluJin;, 来源:中国电子学会第二十一届信息论学术年会 年份:2014
  Spatial modulation(SM),which is a novel transmission scheme,is employed for active transmit antenna indexes and modulated signals to convey the information....
[期刊论文] 作者:Jingjing HE,Haode HUO,Xuefei GUAN,Jinsong YANG, 来源:中国航空学报(英文版) 年份:2021
This paper investigates the influence of crack orientation on damage quantification using Lamb wave in plate structures. Finite element simulation is performed...
[期刊论文] 作者:by Qin Bin, 来源:China Pictorial 年份:2018
Located in Mukua Village of Yanyuan County in Liangshan Yi Autonomous Prefecture, Sichuan Province, the Dazu Primary School is sandwiched between a precipitous mountain and stunning Lugu Lake. The onl...
[期刊论文] 作者:, 来源:机械工程师 年份:2004
利用宏程序加工椭圆工件,可以简化编程.目前用的较多的宏程序是B类宏程序,而在一些老系统中无法采用B类宏进行编程,只能采用A类宏进行编程.文中通过一个椭圆工件的编程实例,...
[期刊论文] 作者:Xin Bei Tan,Man Kee Lam,Yoshim, 来源:中国化学工程学报:英文版 年份:2018
石块燃料的波动的市场价格和到空气的温室气体的压到优势的排放导致了气候变化并且是在这十年的一颗全球担心。因此,因为它可更新、环境地友好, biodiesel 成为了一种其他的选...
[期刊论文] 作者:Nisha Bhatia,Baljinder Singh,A, 来源:黑龙江科技学院学报 年份:2018
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
[期刊论文] 作者:额尔敦朝鲁,乌云其木格,肖欣,韩超,辛伟,, 来源:Communications in Theoretical Physics 年份:2012
基于 Huybrecht 的线性联合的操作员,在半导体量点的弱联合的 bipolaron 的有效潜力上的热格子颤动的效果被使用 LLP 学习变化方法和量统计理论。结果证明 bipolaron 的导致的...
[期刊论文] 作者:, 来源:World Journal of Gastroenterology 年份:2002
AIM:To investigate the relationship among gastrin,somatostatin,G and D cells in gastric ulcer and in itshealing process in rats.METHODS:Fourty-nine Wistar rats...
[期刊论文] 作者:Elvis Efe Isere,Adewale Moses Adejugbagbe,Aderonke Tolulope Fagbemi,Stephen Fagbemi,Adekunle Gboyega Famokun,Temitope Ol, 来源:流行病学期刊(英文) 年份:2021
Background: On 3rd April 2020, an outbreak of Coronaviru...
[期刊论文] 作者:焦毅,徐刚,, 来源:Chinese Physics C 年份:2017
In the lattice design of a diffraction-limited storage ring(DLSR) consisting of compact multi-bend achromats(MBAs), it is challenging to simultaneously achieve...
[期刊论文] 作者:赵光陆,徐明瑜, 来源:Science in China,Ser.B 年份:1987
A mathematical model of substantial exchange between three capillaries and the surrounding tissue is presented.We suppose that three capillaries, which are par...
[期刊论文] 作者:Liyuan Cheng,Hong Liu,Yuming Cui,Nianhua Xue,Weiping Ding,, 来源:Journal of Energy Chemistry 年份:2014
Considering energy shortage, large molecules in corn cob and easy separation of solid catalysts, nano oxides are used to transform corn cob into useful chemical...
[期刊论文] 作者:, 来源:生理学报 年份:2007
It is both an honor and pleasure to be given this opportunity to remember Professor TP FENG and his many contributions.He made many important scientific discove...
[期刊论文] 作者:Ying Zhao,Xin Li,Zexin Zhang,W, 来源:作物学报:英文版 年份:2021
In plants,glycerol-3-phosphate dehydrogenase(GPDH)catalyzes the interconversion of glycerol-3-phosphate(G3P)and dihydroxyacetone phosphate(DHAP)coupled to the r...
[期刊论文] 作者:KUANG Ye,, 来源:Journal of Landscape Research 年份:2004
Urban forest parks are open parks based on natural countryside, which can be used for outdoor sports,leisure and recreation, popular science education and other...
相关搜索: