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浏览/检索结果: 共5条，第1-5条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序作者升序作者降序提交时间升序提交时间降序题名升序题名降序 Sources and Dynamics of Dissolved Inorganic Carbon, Nitrogen, and Phosphorus in a Large Agricultural River Basin in Arid Northwestern China 期刊论文 WATER, 2017 Hu, Yue; Lu, Yuehan; Liu, Chuankun; Shang, Peng; Liu, Jie; Zheng, Chunmiao 收藏  |  浏览/下载：32/0  |  提交时间：2017/12/03 dissolved inorganic carbon  C-13-DIC  N and P nutrients  the Heihe River Basin  agriculture  storm export of nutrients  groundwater-river water interaction  HEIHE RIVER  GROUNDWATER RECHARGE  STABLE-ISOTOPES  ORGANIC-MATTER  LAND-USE  WATER  SOIL  QUANTIFICATION  ENVIRONMENT  CHEMISTRY   Research on the Prediction of Carbon Emission Based on the Chaos Theory and Neural Network. 期刊论文 International Journal Bioautomation, 2017, 卷号: Vol.21 No.4, 页码: 339-348 作者:  Liu, Yingshi;  Tian, Yinhua;  Chen, Min 收藏  |  浏览/下载：5/0  |  提交时间：2019/12/31 CHAOS theory  NEURAL networks (Computer science)  CARBON & the environment   Bibliometric analysis of research on secondary organic aerosols: A Science Citation Index Expanded-based analysis (IUPAC Technical Report) 期刊论文 pure and applied chemistry, 2013 Li, Jinfeng; Zhang, Yuanhang; Veber, Marjan; Wine, Paul H.; Klasinc, Leo 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/13 bibliometrics  carbon compounds  IUPAC Chemistry and the Environment Division  photodegradation  oxidation  research trends  secondary organic aerosols  word cluster analysis  POSITIVE MATRIX FACTORIZATION  CHEMICAL-TRANSPORT MODEL  PARTICULATE MATTER  ISOPRENE  IDENTIFICATION  ATMOSPHERE  EVOLUTION  PRODUCTS  METEOROLOGY  POLLUTANTS   Optimum design of the carbon fiber thin-walled baffle for the space-based camera (EI CONFERENCE) 会议论文 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China Yan Y.; Gu S.; An Y.; Jin G. 收藏  |  浏览/下载：12/0  |  提交时间：2013/03/25 The thin-walled baffle design of the space-based camera is an important job in the lightweight space camera research task for its stringent quality requirement and harsh mechanical environment especially for the thin-walled baffle of the carbon fiber design. In the paper  an especially thin-walled baffle of the carbon fiber design process was described and it is sound significant during the other thin-walled baffle design of the space camera. The designer obtained the design margin of the thin-walled baffle that structural stiffness and strength can tolerated belong to its development requirements through the appropriate use of the finite element analysis of the walled parameters influence sensitivity to its structural stiffness and strength. And the designer can determine the better optimization criterion of thin-walled baffle during the geometric parameter optimization process in such guiding principle. It sounds significant during the optimum design of the thin-walled baffle of the space camera. For structural stiffness and strength of the carbon fibers structure which can been designed  the effect of the optimization will be more remarkable though the optional design of the parameters chose. Combination of manufacture process and design requirements the paper completed the thin-walled baffle structure scheme selection and optimized the specific carbon fiber fabrication technology though the FEM optimization  and the processing cost and process cycle are retrenchment/saved effectively in the method. Meanwhile  the weight of the thin-walled baffle reduced significantly in meet the design requirements under the premise of the structure. The engineering prediction had been adopted  and the related result shows that the thin-walled baffle satisfied the space-based camera engineering practical needs very well  its quality reduced about 20%  the final assessment index of the thin-walled baffle were superior to the overall design requirements significantly. The design method is reasonable and efficient to the other thin-walled baffle that mass and work environment requirement is requirement harsh. 2011 SPIE.   Fundamental study of CO/sub 2/ control technologies and policies in China 期刊论文 2010, 2010 He JianKun; Zhang XiLiang; Jin HongGuang; Yue Li; Cai RuiXian; Gao Lin 收藏  |  浏览/下载：7/0