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浏览/检索结果: 共30条，第1-10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 Assessment of Sectoral Virtual Water Flows and Future Water Requirement in Agriculture Under SSP-RCP Scenarios: Reflections for Water Resources Management in Zhangye City 期刊论文  OAI收割 FRONTIERS IN ECOLOGY AND EVOLUTION, 2022, 卷号: 10, 页码: 13 作者:  Wang, Yifei;  Wu, Haowei;  Li, Zhihui   |  收藏  |  浏览/下载：26/0  |  提交时间：2022/09/21 virtual water  input-output analysis  crop water requirement  CMIP6  scenario analysis  Zhangye   Assessment of Sectoral Virtual Water Flows and Future Water Requirement in Agriculture Under SSP-RCP Scenarios: Reflections for Water Resources Management in Zhangye City 期刊论文  OAI收割 FRONTIERS IN ECOLOGY AND EVOLUTION, 2022, 卷号: 10, 页码: 13 作者:  Wang, Yifei;  Wu, Haowei;  Li, Zhihui   |  收藏  |  浏览/下载：20/0  |  提交时间：2022/09/21 virtual water  input-output analysis  crop water requirement  CMIP6  scenario analysis  Zhangye   Carrying Capacity of Water Resources for Renewable Energy Development in Arid Regions in Northwest China: A Case Study of Golmud, Qinghai 期刊论文  OAI收割 FRONTIERS IN ENVIRONMENTAL SCIENCE, 2022, 卷号: 10, 页码: 12 作者:  Hou, Wenjuan;  Li, Xiaojie;  Yang, Linsheng;  Ta, Wanquan;  Jia, Xiaopeng   |  收藏  |  浏览/下载：32/0  |  提交时间：2022/09/21 arid region  solar and wind energy  water footprint of electricity generation  water resource requirement  scenario analysis   Carrying Capacity of Water Resources for Renewable Energy Development in Arid Regions in Northwest China: A Case Study of Golmud, Qinghai 期刊论文  OAI收割 FRONTIERS IN ENVIRONMENTAL SCIENCE, 2022, 卷号: 10, 页码: 12 作者:  Hou, Wenjuan;  Li, Xiaojie;  Yang, Linsheng;  Ta, Wanquan;  Jia, Xiaopeng   |  收藏  |  浏览/下载：22/0  |  提交时间：2022/09/21 arid region  solar and wind energy  water footprint of electricity generation  water resource requirement  scenario analysis   Variation and determining factor of winter wheat water requirements under climate change 期刊论文  OAI收割 AGRICULTURAL WATER MANAGEMENT, 2021, 卷号: 254, 页码: 9 作者:  Jia, Kun;  Yang, Yanzhao;  Dong, Guanglong;  Zhang, Chao;  Lang, Tingting   |  收藏  |  浏览/下载：30/0  |  提交时间：2021/08/19 Climate change  Crop water requirement  Irrigation water requirement  Sensitivity analysis  Winter wheat  Yarlung Zangbo River   Variation and determining factor of winter wheat water requirements under climate change 期刊论文  OAI收割 AGRICULTURAL WATER MANAGEMENT, 2021, 卷号: 254, 页码: 9 作者:  Jia, Kun;  Yang, Yanzhao;  Dong, Guanglong;  Zhang, Chao;  Lang, Tingting   |  收藏  |  浏览/下载：25/0  |  提交时间：2021/08/19 Climate change  Crop water requirement  Irrigation water requirement  Sensitivity analysis  Winter wheat  Yarlung Zangbo River   Analysis of fusion propulsion system for Earth-to-Mars mission 期刊论文  OAI收割 FUSION ENGINEERING AND DESIGN, 2021, 卷号: 164 作者:  Song, Jun;  Chen, Zhibin;  Zeng, Qiusun;  Bai, Yunqing;  Wang, Fang   |  收藏  |  浏览/下载：24/0  |  提交时间：2021/05/06 Fusion propulsion system  Requirement analysis  Earth-to-Mars mission   Investigating dependencies in software requirements for change propagation analysis 期刊论文  OAI收割 Information and Software Technology, 2014, 卷号: 56, 期号: 1, 页码: 40-53 Zhang, He (1); Li, Juan (3); Zhu, Liming (2); Jeffery, Ross (2); Liu, Yan (4); Wang, Qing (3); Li, Mingshu (3)   |  收藏  |  浏览/下载：42/0  |  提交时间：2014/12/16 Requirement dependency  Requirement traceability  Requirement relationship  Change propagation  Impact analysis  Case study   Lightweight design and analysis of support structure of certain UAV engine (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Electrical Insulating Materials and Electrical Engineering, EIMEE 2012, May 25, 2012 - May 27, 2012, Shenyang, Liaoning, China Xing X.; Liu B.; Han X.; Jia H. 收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25 Support structure of UAV (Unmanned Aerial Vehicle) engine is the important support for UAV engine  playing a support role and bearing extremely complex load  so its lightweight  strength and dynamic characteristics have a great influence on high performance of UAV. This paper focuses on UAV having the requirement of high performance and stability to the support structure of engine  and uses the software of MSC.Patran and MSC.Nastran and topology optimization criterion to lightweight design and analysis the support structure of UAV engine under the premise condition of existing constraints. Then the static strength and modal are analyzed for the result of lightweight design  and the strength of the model and dynamic characteristics are verified. (2012) Trans Tech Publications  Switzerland.   Design and simulation of CMOS star sensor lens with large relative aperture and wide field (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China Zhong X.; Jin G. 收藏  |  浏览/下载：60/0  |  提交时间：2013/03/25 A 50mm focal length  F/1.25  Gaussian type optical system is designed in this paper  which has 20field of view. Actual star image adding optical cross-talk effect of CMOS(Complementary Metal Oxide Semiconductor)  detector is simulated by non-sequential ray tracing in ZEMAX optical design and analysis software to evaluate its performance. The distortion relative to image spot centriod is introduced and calculated by simulated star images  which is less than 0.03% of lens in this paper. Thermal adaptability is discussed by opt-mechanic thermal analysis  which shows the RMS spot radius of marginal filed changes less than 0.7m under 10C temperature gradient  and changes less than 1m during homogeneous temperature changing from 40C to 40C. The results of analyses and simulations show the design of this lens can achieve the requirement of high precision CMOS star sensor well. 2011 IEEE.