机构

• 寒区旱区环境与工程研... [2]
• 金属研究所 [1]
• 地理科学与资源研究所 [1]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [3]
• iSwitch采集 [2]

内容类型

• 期刊论文 [4]
• 会议论文 [1]

发表日期

• 2024 [1]
• 2015 [1]
• 2012 [1]
• 2008 [1]
• 2007 [1]

学科主题

筛选

浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 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 Deciphering the Biophysical Impact of Permafrost Greening on Summer Surface Offset 期刊论文  OAI收割 EARTHS FUTURE, 2024, 卷号: 12, 期号: 6, 页码: e2023EF004077 作者:  Wang, Jian;  Liu, Desheng   |  收藏  |  浏览/下载：7/0  |  提交时间：2024/07/12 permafrost greening  summer surface offset  evapotranspiration  surface albedo  soil moisture  thermal dynamics   The thermal regime, including a reversed thermal offset, of arid permafrost sites with variations in vegetation cover density, wudaoliang basin, qinghai-tibet plateau 期刊论文  iSwitch采集 Permafrost and periglacial processes, 2015, 卷号: 26, 期号: 2, 页码: 142-159 作者:  Lin, Z.;  Burn, C. R.;  Niu, F.;  Luo, J.;  Liu, M. 收藏  |  浏览/下载：149/0  |  提交时间：2019/09/04 Ground thermal regime  Thermal offset  Wudaoliang basin  Qinghai-tibet plateau   Estimation of hourly solar radiation at the surface under cloudless conditions on the Tibetan Plateau using a simple radiation model 期刊论文  OAI收割 ADVANCES IN ATMOSPHERIC SCIENCES, 2012, 卷号: 29, 期号: 4, 页码: 675-689 作者:  Liang Hong;  Zhang Renhe;  Liu Jingmiao;  Sun Zhian;  Cheng Xinghong   |  收藏  |  浏览/下载：17/0  |  提交时间：2021/02/02 NUMERICAL WEATHER PREDICTION  PRECIPITABLE WATER-VAPOR  THERMAL OFFSET  SATELLITE MEASUREMENTS  ENERGY-BALANCE  GPS  OZONE  VALIDATION  RADIOSONDE  PARAMETERIZATIONS  solar radiation  numerical simulation  Tibetan Plateau   Symbiosis of marshes and permafrost in Da and Xiao Hinggan Mountains in northeastern China 期刊论文  iSwitch采集 CHINESE GEOGRAPHICAL SCIENCE, 2008, 卷号: 18, 期号: 1, 页码: 62-69 作者:  Jin Huijun;  Sun Guangyou;  Yu Shaopeng;  Jin Rui;  He Ruixia 收藏  |  浏览/下载：27/0  |  提交时间：2019/10/08 marsh  permafrost  symbiosis  thermal offset  active layer  Da and Xiao Hinggan Mountains   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：23/0  |  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.