oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 49 )

2018 ( 861 )

2017 ( 900 )

2016 ( 964 )

Custom range...

Search Results: 1 - 10 of 40484 matches for " 崔效松 "
All listed articles are free for downloading (OA Articles)
Page 1 /40484
Display every page Item
东大港水道流速垂线分布探讨
吴德安,,童朝锋,张忍顺
海洋科学 , 2008,
Abstract: 对辐射沙洲海域东大港水道4号站位连续2个潮次的流速测量资料进行了分析、研究,拟合给出了流速垂线分布关系,并根据实际测量资料率定了该站位各时刻6个水层的浑水水流的尾流函数项表达式,这些表达式表明浑水水流的尾流函数项是相对深度和摩阻速度的函数。
脉冲激光沉积nico2s4薄膜及其电化学特征
刘家斌?,张辉?,艳华?,疆?,刘敬
无机化学学报 , 2015,
Abstract: 采用脉冲激光沉积法制备了nico2s4薄膜,利用恒流充放电和循环伏安测试研究了nico2s4薄膜作为锂离子电池负极材料的电化学性能和充放电机理。采用高分辨电子显微镜和选区电子衍射(tem&saed)表征了nico2s4薄膜首次循环过程中的组成与结构变化。恒流充放电测试结果显示nico2s4薄膜在3μa·cm-2的放电电流下,0~3v(vsli+/li)范围内,薄膜的首次放电容量为698mah·g-1,经过200次循环之后的放电容量为365mah·g-1;在循环伏安测试中得到了分步反应的可逆氧化还原峰。tem和saed分析结果揭示了nico2s4薄膜与li的电化学反应机理:首次放电过程中nico2s4与li发生转化反应生成了li2s、ni和co,充电后生成了cos和nis复合薄膜。后续循环为cos和nis复合薄膜的可逆分解与形成。研究表明nico2s4是一种有潜在应用价值的锂离子电池负极材料。
HARMONIC ANALYSIS ON TIDAL CURRENT IN TIDAL CHANNEL OF RADIAL SAND RIDGES OFF JIANGSU COAST
江苏辐射沙洲水道潮流调和分析

WU De-An,CUI Xiao-Song,ZHANG Ren-Shun,TONG Chao-Feng,
吴德安
,,张忍顺,童朝锋

海洋与湖沼 , 2008,
Abstract: Tidal current data during 1998 fall and 2000 spring in 29 stations on radial sand ridges off Jiangsu coast of China were analysed using tidal current harmonious program from which tidal harmonious constants of 9 constituents were determined; and the elliptic factors of tidal current and tidal current in each site were calculated and analysed. The tidal cur- rent elliptic factors of the M2 component in surface, middle, and near-bottom water layers at each site were analysed. The result shows that, in the study region, M2 was a dominant component of tidal current in type of regular semidiurnal tide. The overall direction of tidal current was along the tidal channels with complicated pattern of current vector rotation. The vector rotation in upper water layer was mainly clockwise; and in other layers, the rotations were affected obviously by marine to- pography. In addition, the phase lags of all the water layers were compared, and the results show that, in sand ridge, shoal, and groove areas, the shallow water component of tide were affected clearly increased downward in deeper places.
Vertical distribution character of current velocity in Dongdagang channel
东大港水道流速垂线分布探讨

WU De-an,CUI Xiao-song,TONG Chao-feng,ZHANG Ren-shun,
吴德安
,,童朝锋,张忍顺

海洋科学 , 2008,
Abstract: On the basis of analyzing the two tidal periods' successive survey results on the tidal current at No.4 station in the tidal channel called Dongdagang,the characters of tidal current and space distribution of current vector are further studied.The vertical distribution of current velocity is studied and the surveyed current velocity data are fitted to the relative depth.The vertical distribution relationship between velocity and relative depth is discovered.Based on the surveyed current velocity data,the remainder current functions of six water layers are calibrated by the fitting method.The remainder current function term is the function of friction velocity and relative depth.
开口薄壁杆件横截面几何性质计算

力学与实践 , 2010, DOI: 10.6052/1000-0992-lxysj2009-403
Abstract: 基于有限元方法的思想,给出了厚度线性变化的薄壁结构扇性几何性质计算的一种方法,通过数值实施,表明了所给方法的正确和有效性.
拉压杆件有限元最佳应力点问题

力学与实践 , 2001, DOI: 10.6052/1000-0992-2000-145
Abstract: 以拉压杆件单元为例,对三种载荷作用下的位移和应变利用等参元计算,对等参元最佳应力计算点问题进行了分析
均质几何体转动惯量计算的一种方法

力学与实践 , 2000, DOI: 10.6052/1000-0992-f2000-050
Abstract: 借助于几何插值关系和插值函数积分的公式,给出了均质三角形几何体转动惯量计算的一般表达式,根据转动惯量的定义可利用上述方法求得任意直边几何体对任意轴转动惯量的精确解.
简单平面桁架结点位移确定的一种方法

力学与实践 , 1998, DOI: 10.6052/1000-0992-1999-235
Abstract: 本文利用结点位移表示构件的应变,把简单平面桁架结点位移的确定转化为求解线性方程组,利用结点位移-应变关系为建立超静定问题分析的附加方程提供了一条方便的途径.
被动大陆边缘碳酸盐生长序列与盆山转换耦合

地球学报 , 1996,
Abstract: 碳酸盐作为盆地堆积物整体的一部分,剖析达到碳酸盐清水环境的先决条件、保持条件和中止消亡条件就可判别盆地中碳酸盐沉积与其他堆积作用之间的关系,恢复盆地性质、演化历史和盆转山的过程。碳酸盐生长的4个边界条件:碳酸盐生长的基座、碳酸盐沉积前后的转换面、碳酸盐生长序列的内部结构和碳酸盐中止和消亡方式、不同板块部位的盆地和盆转山过程,这4个边界条件均不相同。在被动大陆边缘转为前陆盆地过程中,碳酸盐生长发育的4个边界条件也随之而变化。其过程为:早期裂谷充填;晚期裂谷、碎屑岩陆架形成;碳酸盐陆架;热沉降和镶边碳酸盐台地
云南勐野井钾盐矿床特征,微量元素地球化学及成因探讨
,吴嘉陵
地球学报 , 1983,
Abstract: 勐野井钾盐矿床位于云南兰坪、恩茅拗陷带的南部。该带地处藏滇印支地槽褶皱系中段,点苍山、哀牢山断裂带以西,澜沧江断裂带以东。区内发育有巨厚的中新生代红色碎屑岩和含盐建造,本区的主要含盐层为晚白垩世至老第三纪勐野井组。 勐野井组有上下两套含盐层,中部为棕红色钙泥质粉砂岩,下含盐层在区域上是含膏层;上含盐层为石盐岩夹钾盐透镜体。下覆地层是上白垩统扒沙河紫红色石英砂岩,上覆为老第三系等黑组棕红色粉砂岩。矿区为一向斜构造呈北西—南东向分布,盐矿体呈穹窿状,石盐层平均厚196米,钾盐厚29米,NaCl平均含量71.67% KCl 8.70%,为混有碎屑物的氯化物型钾盐矿床。 本文研究了富钾盐层剖面结构、碎屑物沉积特征、溴、铷、锶、硼等微量元素赋存规律及其在寻找钾盐矿床工作中的标志意义,并探讨了盐矿床的成因。全文蒙袁见齐教授审阅,并提出修改意见,在此表示感谢。
Page 1 /40484
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.