中国科学院机构知识库网格系统: 检索

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	Maize is stressed by salt rather than water under drip irrigation with soil matric potential higher than-50 kPa in an arid saline area 期刊论文 OAI收割 JOURNAL OF AGRONOMY AND CROP SCIENCE, 2021, 页码: 15 作者: Zhang, Tibin; Ji, Xiangxiang; Zhan, Xiaoyun; Ding, Yuntao; Zou, Yufeng \| 收藏 \| 浏览/下载：54/0 \| 提交时间：2021/06/10 crop salt production function crop salt tolerance mulched drip irrigation readily available water soil matric potential water‐ use efficiency
	Available nitrogen is the key factor influencing soil microbial functional gene diversity in tropical rainforest 期刊论文 OAI收割 BMC MICROBIOLOGY, 2015, 卷号: 15, 页码: - 作者: Cong, Jing; Liu, Xueduan; Lu, Hui; Xu, Han; Li, Yide 收藏 \| 浏览/下载：47/0 \| 提交时间：2016/03/11 Tropical rainforest GeoChip Microbial functional gene diversity Microbial metabolic potential Available nitrogen
	The pattern of available construction land along the Xijiang River in Guangxi, China 期刊论文 OAI收割 LAND USE POLICY, 2015, 卷号: 42, 期号: 0, 页码: 102-112 作者: Tang, Qing; Xu, Yong; Dang, Lijuan 收藏 \| 浏览/下载：26/0 \| 提交时间：2015/03/27 Available construction land Suitable assessment Potential Xijiang River Guangxi
	Features extraction and matching of teeth image based on the SIFT algorithm (EI CONFERENCE) 会议论文 OAI收割 2012 2nd International Conference on Computer Application and System Modeling, ICCASM 2012, July 27, 2012 - July 29, 2012, Shenyang, China 作者: Wang X.; Wang X.; Wang X. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 Using of SIFT algorithm in the image of teeth model can detect the features of the teeth image effectively. In this approach first search over all scales and image locations by using a difference-of-Gaussian function to identify potential interest points that are invariant to scale and orientation. Second select keypoints based on measures of their stability and a detailed model is fit to determine location and scale at each candidate location. Third assign one or more orientations to each keypoint location based on local image gradient directions. Last measure the local image gradients at the selected scale in the region around each keypoint. And then use the KNN algorithm to match the features. Through lots of experiments and comparing with other feature extraction methods this method can detect the features of the teeth model effectively and offer some available parameters for 3D reconstruction of the teeth model. the authors.
	Research on the affect of differential-images technique to the resolution of infrared spatial camera (EI CONFERENCE) 会议论文 OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China Jin G.; An Y.; Qi Y.; Hu F. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 The optical system of infrared spatial camera adopts bigger relative aperture and bigger pixel size on focal plane element. These make the system have bulky volume and low resolution. The potential of the optical systems can not be exerted adequately. So one method for improving resolution of infrared spatial camera based on multi-frame difference-images is introduced in the dissertation. The method uses more than one detectors to acquire several difference images and then reconstructs a new high-resolution image from these images through the relationship of pixel grey value. The technique of difference-images that uses more than two detectors is researched and it can improve the resolution 2.5 times in theory. The relationship of pixel grey value between low-resolution difference-images and high-resolution image is found by analyzing the energy of CCD sampling a general relationship between the enhanced times of the resolution of the detected figure with differential method and the least count of CCD that will be used to detect figure is given. Based on the research of theory the implementation process of utilizing difference-images technique to improve the resolution of the figure was simulated used Matlab software by taking a personality image as the object and the software can output the result as an image. The result gotten from the works we have finished proves that the technique is available in high-resolution image reconstruction. The resolution of infrared spatial camera can be improved evidently when holding the size of optical structure or using big size detector by applying for difference image technique. So the technique has a high value in optical remote fields.
	Influence of leaf water potential on diurnal changes in CO2 and water vapour fluxes SCI/SSCI论文 OAI收割 2007 作者: Wang J.; Wang J.; Yu Q. 收藏 \| 浏览/下载：25/0 \| 提交时间：2012/06/08 CO2 flux leaf water potential North China Plain water vapour flux winter wheat stomatal conductance carbon assimilation canopy conductance available energy use efficiency land surfaces winter-wheat 2-leaf model photosynthesis transpiration
	中国农田管理措施的固碳潜力评价学位论文 OAI收割博士, 北京: 中国科学院研究生院, 2006 韩冰收藏 \| 浏览/下载：124/0 \| 提交时间：2010/06/23 农田土壤固碳措施固碳潜力泄漏有效固碳能力可行性 Agricultural Soil Carbon Sequestration Practice Carbon Sequestration Potential Leakage Available Potential Feasibility
	Some characteristics of the atmosphere during an adiabatic process 期刊论文 iSwitch采集 Progress in natural science, 2006, 卷号: 16, 期号: 6, 页码: 644-648 作者: Gao Li; Li Jianping; Ren Hongli 收藏 \| 浏览/下载：32/0 \| 提交时间：2019/05/10 Available potential energy Adiabatic Isentropic surface Atmospheric reference state Conditional minimum total potential energy
	Lightning activity on the central Tibetan Plateau and its response to convective available potential energy 期刊论文 iSwitch采集 CHINESE SCIENCE BULLETIN, 2003, 卷号: 48, 期号: 3, 页码: 296-299 作者: Qie, XS; Toumi, R; Zhou, YJ 收藏 \| 浏览/下载：29/0 \| 提交时间：2019/10/08 Tibetan Plateau lightning activity optical radiance convective available potential energy