中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页
机构
成果
学者
登录
注册
登陆
×
验证码:
换一张
忘记密码?
记住我
×
校外用户登录
CAS IR Grid
机构
力学研究所 [1]
地理科学与资源研究所 [1]
长春光学精密机械与物... [1]
高能物理研究所 [1]
植物研究所 [1]
近代物理研究所 [1]
更多
采集方式
OAI收割 [5]
iSwitch采集 [1]
内容类型
期刊论文 [4]
SCI/SSCI论文 [1]
会议论文 [1]
发表日期
2024 [1]
2014 [1]
2013 [1]
2011 [1]
2007 [1]
2003 [1]
更多
学科主题
Biodiversi... [1]
Ecology [1]
Environmen... [1]
筛选
浏览/检索结果:
共6条,第1-6条
帮助
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式:
请选择
题名升序
题名降序
提交时间升序
提交时间降序
作者升序
作者降序
发表日期升序
发表日期降序
MPM formulations for the coupled thermo-hydro-mechanical behaviour of saturated and unsaturated soils
期刊论文
OAI收割
COMPUTERS AND GEOTECHNICS, 2024, 卷号: 170, 页码: 24
作者:
Zhan, ZQ
;
Zhou, C
;
Liu CQ(刘传奇)
;
Du, J T
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2024/07/04
Landslides
Partial saturation
Numerical modelling
Slopes
Temperature effects
A timing detector with pulsed high-voltage power supply for mass measurements at CSRe
期刊论文
OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2014, 卷号: 755, 页码: 38-43
作者:
Zhang, W
;
Tu, XL
;
Wang, M
;
Zhang, YH
;
Xu, HS
  |  
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2017/03/28
Storage Ring Mass Spectrometry
Isochronous Mass Spectrometry
Timing Detectors
Micro-channel Plates
Saturation Effects
Nitrogen deposition weakens plant-microbe interactions in grassland ecosystems
期刊论文
OAI收割
GLOBAL CHANGE BIOLOGY, 2013, 卷号: 19, 期号: 12, 页码: 3688-3697
作者:
Wei, Cunzheng
;
Yu, Qiang
;
Bai, Edith
;
Lu, Xiaotao
;
Li, Qi
  |  
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2023/04/25
aboveground-belowground linkages
compensatory effects
microbial carbon limitation
N saturation
resource stoichiometry
structural equation modeling
The compensation of quadrupole errors and space charge effects by using trim quadrupoles
期刊论文
iSwitch采集
Science china-physics mechanics & astronomy, 2011, 卷号: 54, 页码: S214-s217
作者:
An YuWen
;
Wang Sheng
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2019/04/23
Saturation errors
Space charge effects
Trim quadruple
Stop band integrals
The spectral feature analysis of semiconductor thin disk laser (EI CONFERENCE)
会议论文
OAI收割
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
作者:
Li J.
;
Wang L.-J.
;
Wang L.-J.
;
Ning Y.-Q.
;
Li J.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2013/03/25
The semiconductor thin disk laser is a new type of semiconductor laser. This work gives the basic operation function of semiconductor disk laser
and analyses the heat effect by the experimentally measured photoluminescence spectrum of the laser chip at different pump power and different temperature. We can see that: with increasing pump power
the thermal effects of the gain material becomes seriously and causes the saturation of carrier lifetime
so the electron-hole pair created in the absorbtion layer have no enough time to rate to one of the wells
and the non-radiative recombination happens in the barrier. When the thermal effects becomes stronger
the chip will not lasing. This phenomenon is from the smaller energy offset between barrier and quantum well. We optimize the original structure design and experimental technology. A non-absorbing AlGaAs layer who is transparent to the pumping and laser wavelength is added to confine the carriers in the quantum wells. At the same time a DBR with double reflecting band is induced to improve the absorbing efficiency of the pumping light. The single QW is replaced by the three narrow QWs
This three QWs structure can add the quantum state of QW
increase the recombination probability of carriers in the QWs and reduce the heat effect. The chemical etch equipment is also improved to control the surface unevenness to be within 50 nm.
How do nitrogen inputs to the Changjiang basin impact the Changjiang River nitrate: A temporal analysis for 1968-1997
SCI/SSCI论文
OAI收割
2003
Yan W. J.
;
Zhang S.
;
Sun P.
;
Seitzinger S. P.
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2012/06/08
anthropogenic effects
Changjiang River
nitrate
world rivers
yangtze-river
fixation
china
terrestrial
ecosystems
budgets
carbon
saturation
transport