中国科学院机构知识库网格系统: 检索

Dominant role of wettability in improving the specific capacitance 期刊论文 OAI收割
GREEN ENERGY & ENVIRONMENT, 2019, 卷号: 4, 期号: 2, 页码: 171-179
作者: Liu, Tongtong; Wang, Kai; Chen, Yongxiu; Zhao, Shuangliang; Han, Yongsheng

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收藏 | 浏览/下载：25/0 | 提交时间：2020/03/24

Supercapacitor Energy density Specific capacitance Effective surface area Wettability

Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China 期刊论文 OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 7, 页码: 1498-1509
作者: Zhong Ronghua; Hu Jinming; Bao Yuhai; Wang Fei; He Xiubin

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收藏 | 浏览/下载：112/0 | 提交时间：2018/08/21

Roots distribution Soil nutrients Water level fluctuations Riparian zone Root surface area density Root length density

Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China 期刊论文 OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 7, 页码: 1498-1509
作者: Zhong Rong-hua; Hu Jin-ming; Bao Yu-hai; Wang Fei; He Xiu-bin

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收藏 | 浏览/下载：21/0 | 提交时间：2020/09/29

Roots distribution Soil nutrients Water level fluctuations Riparian zone Root surface area density Root length density

The influences of topographic relief on spatial distribution of mountain settlements in Three Gorges Area 期刊论文 OAI收割
ENVIRONMENTAL EARTH SCIENCES, 2015, 卷号: 74, 期号: 5, 页码: 4335-4344
作者: Hui, Yu; Yong, Luo; Liu Shaoquan; Yong, Wang; Yong, Yang

收藏 | 浏览/下载：33/0 | 提交时间：2015/10/11

Topographic relief Three Gorges Area Planation surface Settlement density

极端干旱环境下的胡杨细根分布与土壤特征/Fine Root Distribution of Populus euphratica Oliv.and Its Relations with Soil Factors under Extremely Arid Environment[J] 期刊论文 OAI收割
中国沙漠, 2011, 卷号: 31, 期号: 6, 页码: 1449-1458
作者: 木巴热克·阿尤普; 陈亚宁; 李卫红; 郝兴明; 马建新

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收藏 | 浏览/下载：32/0 | 提交时间：2017/12/29

胡杨细根分布根长密度根表面积密度土壤含水率土壤特征因子 Fine Root Distribution Root Length Density Root Surface Area Density Soil Water Content Soil Factor

Three-dimensional (3D) structure model and its parameters for poplar shelterbelts 期刊论文 OAI收割
SCIENCE CHINA-EARTH SCIENCES, 2010, 卷号: 53, 期号: 10, 页码: 1513-1526
作者: Fan ZhiPing; Gao JunGang; Zeng DeHui; Zhou XinHua; Sun XueKai

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收藏 | 浏览/下载：18/0 | 提交时间：2019/06/04

Aerodynamics Cubic Density Porosity Numerical Simulation Surface Area Density

Three-dimensional (3d) structure model and its parameters for poplar shelterbelts 期刊论文 iSwitch采集
Science china-earth sciences, 2010, 卷号: 53, 期号: 10, 页码: 1513-1526
作者: Fan ZhiPing; Gao JunGang; Zeng DeHui; Zhou XinHua; Sun XueKai

收藏 | 浏览/下载：37/0 | 提交时间：2019/05/10

Aerodynamics Cubic density Porosity Numerical simulation Surface area density

广州市海珠区高密度城区扩展SLEUTH模型模拟 期刊论文 OAI收割
地理学报, 2010, 卷号: 65, 期号: 10, 页码: 1163-1172
作者: 李明杰; 钱乐祥; 吴志峰; 崔海山; 侯西勇

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收藏 | 浏览/下载：3/0 | 提交时间：2024/05/07

percentage of impervious surface high-density urban area SLEUTH Model Simulation Haizhu District of Guangzhou City 非渗透表面丰度高密度城区 SLEUTH模型模拟广州市海珠区

Optical fiber transmission of Q-switdied Nd:YAG pulses of 10MW peak power: Mechanism of damage to the fiber (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies, November 2, 2005 - November 5, 2005, Xian, China
作者: Wang L.; Zhang Y.; Chen W.; Tang Y.; Wang L.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

This paper presents theoretical analysis and experiment results of four different fibers transmitting 10MW peak power Nd: YAG laser pulse. The main factors limiting to optical fiber transmission of high power laser pulse is pointed including air breakdown at focus area and surface damage of optical fiber. The theory of air breakdown and the fiber coupling conditions is described briefly. The results of study to the transmission properties and damage conditions are presented on the basis of four different types of optical fibers. The results of the experiments are further analyzed in the aspects of transmitting efficiency air breakdown and surface damage. The local and foreign optical fibers with plastic-cladding and silica-cladding and step- index and graded- index fibers are tested separately in the experiments. The experiments showed that the imported fibers are able to transmit up to 10MW peak power laser pulse with no any visible damage while energy density at the fiber output end surface is 3.54GW/cm2. For local fibers damage on the input surface of both plastic-cladding and silica-cladding step-index fibers was found obviously. The column damage to the graded index fiber was also found and investigated in the research. Damage mechanisms of fiber at high peak power laser pulses are summarized. High quality finishing of fiber end surface will improve damage threshold tremendously. The conclusion of the study is that transmitting Q-switched Nd:YAG pulses of 10MW peak power is feasible for the domestically made fibers if their end surfaces are properly processed.

High-power InGaAs/GaAs VCSEL's two-dimension arrays (EI CONFERENCE) 会议论文 OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者: Liu Y.; Wang L.-J.; Wang L.-J.; Liu Y.; Liu Y.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

Selectively oxidized InGaAs/GaAs vertical -cavity surface-emitting lasers (VCSEL) array at an emission wavelength of 980nm was reported. A 16 elements array with 200m aperture size (250m center spacing) of individual elements shows a CW output power of 1.21 W at room temperature resulting in 1 KW/cm2 average optical power density. The device threshold current is 1.32A The lasing peak wavelength is 981.9 nm the full width at half-maximum is 0.7 nm and the far-field divergence angle is about 17.The characteristics of a single device with a active region diameter of 800m is compared with that of a 2-D array with active region diameter of individual clement of 200m. These two kinds of devices have the same total lasing area. At the same current injection the single device has a higher threshold and a higher output power than the array. The red shift of single device is more obvious than that of the array's.