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68篇 您的检索式:作者名="Chiwei"
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1Molecular cloning of C4-specific Ppc gene of sorghum and its high level expression in transgenic rice显示文摘In order to improve the carbon-assimilation ability of C3 plants, we isolated a C4-specific photosynthetic enzyme gene, Ppc (encode phosphoenolpyruvate carboxylase, PEPCase) from the genome of the C4 plant, sorghum, and transformed rice with it. As shown by sequence analysis, the gene is composed of 10 exons and 9 introns, and the full-length transcript is 5989 bp long. A recombinant expres-sion vector, p1301PEPC, was constructed by inserting the gene into a plasmid vector, pCAMBIA1301, which was then transformed into two japonica rice varieties, Nongken 58 and Zhonghua 10, using an Agrobacterium-mediated transforma-tion system. PCR analysis, activity measurement of PEPCase, and protein-, RNA- and DNA-based hybridization all con-firmed the successful integration of the C4-specific Ppc gene into the nuclear genome of rice and its high level expression. Physiological studies revealed the photosynthetic features characterizing C4 plants such as marked lowering of CO2 compensation point and photorespiration rate, and im-proved carboxylation efficiency. This study provides useful experimental materials and opens up new avenues for fur-ther studies on improving photosynthetic efficiency of elite varieties of rice.ZHANGFang CHIWei WANGQiang ZHANGQide WUNaihu 2003Chinese Science Bulletin2003,48,17:4
2Prussian Blue Analogues in Aqueous Batteries and Desalination Batteries显示文摘In the applications of large-scale energy storage,aqueous batteries are considered as rivals for organic batteries due to their environmentally friendly and low-cost nature.However,carrier ions always exhibit huge hydrated radius in aqueous electrolyte,which brings difficulty to find suitable host materials that can achieve highly reversible insertion and extraction of cations.Owing to open threedimensional rigid framework and facile synthesis,Prussian blue analogues(PBAs)receive the most extensive attention among various host candidates in aqueous system.Herein,a comprehensive review on recent progresses of PBAs in aqueous batteries is presented.Based on the application in different aqueous systems,the relationship between electrochemical behaviors(redox potential,capacity,cycling stability and rate performance)and structural characteristics(preparation method,structure type,particle size,morphology,crystallinity,defect,metal atom in highspin state and chemical composition)is analyzed and summarized thoroughly.It can be concluded that the required type of PBAs is different for various carrier ions.In particular,the desalination batteries worked with the same mechanism as aqueous batteries are also discussed in detail to introduce the application of PBAs in aqueous systems comprehensively.This report can help the readers to understand the relationship between physical/chemical characteristics and electrochemical properties for PBAs and find a way to fabricate high-performance PBAs in aqueous batteries and desalination batteries.Chiwei Xu Zhengwei Yang Xikun Zhang Maoting Xia Huihui Yan Jing Li Haoxiang Yu Liyuan Zhang Jie Shu 2021Nano-Micro Letters2021,13,11:4
3Universality and Specificity of Fractal Dimension of Fractured Surfaces in Materials显示文摘After calculation on the fracture angles under various conditions of specific surface energies with different symmetry operations of rotation, the complicated behavior of dependence of fractal dimension on the strudure of crystal is shown. It is found that the crack propagates along the weakest crystal plane no matter what the direction of the maximum stress is if the anisotropy is sufficiently strong; and then, the fractal dimension of the fractured surfaces might be determined by the approximate fractal Structure already existed in the material. Specificity of the fractal dimension of fractured surfaces would be easy to appear in this case. Reversely, the crack propagates along the direction of the maximum stress no matter what direction of the weakest crystal plane is if the anisotropy is sufficiently weak. Universality of the fractal dimension of fractured surfaces would be possible to appear in this case. In many real materials, universality and specificity of the materials are associated. The fractal dimension measured may more or less be influenced by the Structure of materials and it shows its universality through the specificity of materials.Chiwei LUNG and Shenggang WANG (International Centre for Materials Physics, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China) 2000Journal of Materials Science & Technology2000,16,1:2
4Stress Field of Non-equilibrium Grain Boundaries in Nano-crystalline Metals显示文摘Introducing the stress distribution near grain boundaries to improve the dislocation pileup model for the Hall-Petch (H-P) relation, the continuous distribution of dislocations in the pileup could be solved by means of Tschebysheff polynomials for the Hubert transformation. An analytical formula of the stress intensity factor for the dislocation pileup is obtained. The reverse H-P relation may be explained by the modified dislocation-pileup-model.Chiwei LUNG and Enke TIAN International Centre for Materials Physics, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Hengqiang YE Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sci 2001Journal of Materials Science & Technology2001,17,3:2
5Acquisition probability differences in cloud coverage of the available Landsat observations over mainland Southeast Asia from 1986 to 2015显示文摘Landsat data are the longest available records that consistently document global change.However,the extent and degree of cloud coverage typically determine its usability,especially in the tropics.In this study,scene-based metadata from the U.S.Geological Survey Landsat inventories,ten-day,monthly,seasonal,and annual acquisition probabilities(AP)of targeted images at various cloud coverage thresholds(10%to 100%)were statistically analyzed using available Landsat TM,ETM+,and OLI observations over mainland Southeast Asia(MSEA)from 1986 to 2015.Four significant results were found.First,the cumulative average acquisition probability of available Landsat observations over MSEA at the 30%cloud cover(CC)threshold was approximately 41.05%.Second,monthly and ten-day level probability statistics for the 30%CC threshold coincide with the temporal distribution of the dry and rainy seasons.This demonstrates that Landsat images acquired during the dry season satisfy the requirements needed for land cover monitoring.Third,differences in acquisition probabilities at the 30%CC threshold are different between the western and eastern regions of MSEA.Finally,the ability of TM,ETM+,and OLI to acquire high-quality imagery has gradually enhanced over time,especially during the dry season,along with consequently larger probabilities at lower CC thresholds.Peng Li Zhiming Feng Chiwei Xiao 2018International Journal of Digital Earth2018,11,5:2
6Adsorption of bisphenol-A from aqueous solution onto minerals and carbon adsorbents显示文摘Tsai Wentien Lai Chiwei Su Tingyi 2006Journd of Hazardous Materiols2006,134,13:1
7An Integrated Thermo- mechanical-dynamic Model to Characterize Motor- ized Machine Tool Spindles During Very High Speed Rotation显示文摘Lin Chiwei Tu J F Joe K 2003International Journal of Machine Tool & Manufacture2003,43,:1
8A Digital predictive current control with improved sampled inductor current for cascaded inverters显示文摘Hua Chichiang Wu Chunwei Chuang Chiwei 2009IEEE Transactions on Industrial Electronics2009,56,5:1
9Syn- thesis and morphological control of nickel hydroxide for lithium-nickel composite oxide cathode materials by an eddy circulating precipitation method 显示文摘SUN Jutang CHEN Jinguo WANG Chiwei 2006Industrial and Engineering Chemistry Research2006,45,6:1
10显示文摘Yuntsai Chou Chiwei Lee and Jianru Chung Understanding m- commerce Payment systems through the analytic hierarchy Proeess 2004Journal of Business Researeh2004,12,:1
11Regional Difference in Development of Life Insurance Markets in China 显示文摘Pan Guochen Chang Hsuling and Su Chiwei 2012Emerging Markets Re- view2012,,13:1
12显示文摘Xiaoling Ma Chiwei Wang Xiaoyan Han 2008Journal of Alloys and Compounds2008,453,35:1
13An integrated thermo-mechanical-dynamic model to characterize motorized machine tool spindles during very high speed rotation显示文摘LIN Chiwei TU Jueifeng KAMMAN J 2003International Journal of Machine Tools & Manufacture2003,43,10:1
14Design of a novel LED lens cap and optimization of LED placement in a large area direct backlight for LCD-TVs显示文摘Chao Paul C P Liao Lun-de Chiu Chiwei 2006Proceedings of SPIE2006,6196,61:1
15Detection of mercury(Ⅱ) based on Hg^2+ -DNA complexes inducing the aggregation of gold nanoparticles显示文摘LIU Chiwei HSIEH Y T HUANG C C 2008Chemical Communications2008,21,19:1
16Planning S -curves in the coordinated PTP motion of multiple - axis machines under velocity acceler- ation and jerk constraints 显示文摘ROU Chiwei SHIH Chinglong LEE Wenyo 2003Journal of Chinese institute of electrical engineering2003,10,3:1
17Temperature-programmed reduction study on calcination of nano palladium显示文摘Chou Chiwei Chu Shoujuan Chiang Huijean 2001The Journal of Physical Chemistry B2001,105,38:1
18An Integrated Thermo- Mechanical- Dynamic Model to Characterize Motorized Machine Tool Spindles During Very High Speed Rotation 显示文摘Lin Chiwei Jay F T Joe Kaman 2003International Journal of Machine Tools & Manufacture2003,,43:1
19An integrated thermo-mechanical-dynamic model to characterize motorized machine tool spindles during very high speed rotation显示文摘LIN CHIWEI TU J F KAMMAM J 2003International Journal of Machine Tools&Manufacture2003,43,10:1
20Analysis for optimal gate design of thin-walled injection molding 显示文摘SHEN Yungkang WU Chiwei YU Yafeng 2008Int Commun Heat Mass Transfer2008,35,:1
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