中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共8条，第1-8条

帮助

条数/页：排序方式：
	Selection of National Park Candidate Areas Based on Spatial Overlap Characteristics of Protected Areas in China 期刊论文 OAI收割 SUSTAINABILITY, 2022, 卷号: 14, 期号: 5, 页码: 17 作者: Liu, Xiaoman; Wang, Chao; Jiang, Dong; Wang, Yong; Gao, Jixi \| 收藏 \| 浏览/下载：34/0 \| 提交时间：2022/09/21 protected areas overlapping continuous area national park candidate area
	Selection of National Park Candidate Areas Based on Spatial Overlap Characteristics of Protected Areas in China 期刊论文 OAI收割 SUSTAINABILITY, 2022, 卷号: 14, 期号: 5, 页码: 17 作者: Liu, Xiaoman; Wang, Chao; Jiang, Dong; Wang, Yong; Gao, Jixi \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2022/09/21 protected areas overlapping continuous area national park candidate area
	Feasibility of biodiesel production and CO2 emission reduction by &ITMonoraphidium dybowskii&IT LB50 under semi-continuous culture with open raceway ponds in the desert area 期刊论文 OAI收割 BIOTECHNOLOGY FOR BIOFUELS, 2018, 卷号: 11, 期号: 1, 页码: 14 作者: Yang, Haijian; He, Qiaoning; Hu, Chunxiang \| 收藏 \| 浏览/下载：65/0 \| 提交时间：2019/07/03 Microalgae Lipid production Semi-continuous culture CO2 fixation Open raceway ponds Desert area Evaporation
	Evaluating Spatial Representativeness of Station Observations for Remotely Sensed Leaf Area Index Products 期刊论文 OAI收割 IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2016, 卷号: 9, 期号: 7, 页码: 3267-3282 作者: Xu, Baodong; Li, Jing; Liu, Qinhuo; Huete, Alfredo R.; Yu, Qiang 收藏 \| 浏览/下载：43/0 \| 提交时间：2016/12/19 Chinese Ecosystem Research Network (CERN) continuous leaf area index (LAI) observations heterogeneity spatial representativeness validation
	Nitrate leaching on loess soils in north-west China: Appropriate fertilizer rates for winter wheat 期刊论文 OAI收割 ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE, 2011, 卷号: 61, 期号: 3, 页码: 253-263 Xue Xiaohui; Hao Mingde 收藏 \| 浏览/下载：26/0 \| 提交时间：2012/06/01 Continuous wheat fertilizer application rate nitrate leaching nitrogen phosphorus rain-fed agriculture area
	A design on a control method of a new type of focal plane shutter (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Xue L.; Ming L.; Zheng L.-N.; Zhou J.-F.; Zhang H.-W.; Zhang J.-C. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 In order to ensure appropriate exposure time and no exposure while electric charge is transferring after taking a photograph it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle structural design and control procedure about this new focal plane shutter. Under the control of DSP the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement long life span with more than 105 operating times a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width)and the exposure error is less than 10%. With the CCD gain adjustment the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras. 2010 IEEE.
	Simulation of vertical wind profile under neutral conditions SCI/SSCI论文 OAI收割 2007 作者: Yu Q.; Wang W. 收藏 \| 浏览/下载：23/0 \| 提交时间：2012/06/08 leaf-area index vegetation index satellite data continuous fields fractional cover roughness length plant canopies boreal forests landes forest urban areas
	海南岛典型人工森林生态系统服务功能比较研究学位论文 OAI收割博士, 北京: 中国科学院研究生院, 2006 魏彦昌收藏 \| 浏览/下载：110/0 \| 提交时间：2010/05/19 生态系统服务功能土壤质量用材林浆纸林桉树连栽热带地区 Ecosystem services Soil quality Timber plantation Pulpwood plantation Eucalyptus plantation with continuous planting rotation Tropical area