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57篇 您的检索式:作者名="ZHANG Xinguang"
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1The next generation models for crops and agro-ecosystems显示文摘Growth in population, decrease in arable land area, and change in climate are endangering our food security. Precision agriculture has the potential to increase crop productivity thorough tailored agricultural practices for different growing areas. Many models of crops and agro-ecosystems capable of predicting interaction between plants and environments have been developed for precision agriculture. Currently, there are several representative categories of crop and agro-ecosystem models, including the de Wit school models, the DSSAT series models and the APSIM series models, which have contributed substantially to improvement of agricultural practices. However, these models are weak in predicting performances of crops under environmental and genetic perturbations are generally weak, which severely limits the application of these models in guiding precision agriculture. We need to develop the next generation crop and agro-ecosystems models with a high level of mechanistic basis, which can be integrated with high throughput data and can predict the heterogeneity of environmental factors inside canopy and dynamic canopy photosynthesis. In developing such a model close collaboration is inevitably required among scientists from different disciplines. The successful development and application of such models will undoubtedly advance precision agriculture through providing better agronomical practices tailored for different growing environments. These models will also form a basis to identify breeding targets for increased productivity at given location with given soil and climatic conditions.ZHU XinGuang ZHANG GuiLian THOLEN Danny WANG Yu XIN ChangPeng SONG QingFeng 2011Science China(Information Sciences)2011,54,3:6
2Correlation analysis between the chemical contents and bioactivity for the quality control of Alismatis Rhizoma显示文摘In order to clarify regions of production and to discriminate processing methods, quantitative and qualitative analyses for saccharides and terpenes in 35 batches of Alismatis Rhizoma were performed.Methodologies included HPLC–PDA, HPLC–VWD and UHPLC–MSn, combined with principal component analysis(PCA) and partial least squares regression techniques(PLSR). The inhibitory effects of triterpenes and Alismatis Rhizoma extracts on lipase activity were evaluated in vitro. PLSR analysis revealed significant positive correlations(R2= 0.5795) between the contents of triterpenes 10, 14, 15, 18 and 22 and the inhibitory effects of Alismatis Rhizoma. The present study establishes an effective method for simultaneous determination of multiple components, and identifies key bioactive triterpenes. These results can be used for systematic and novel analytical strategies for the quality control of Alismatis Rhizoma production.Xiaoxv Gao Chengpeng Sun Zhenglong Yu Jian Cang Xiangge Tian Xiaokui Huo Lei Feng Xinguang Liu Chao Wang Baojing Zhang Xiaochi Ma 2018Acta Pharmaceutica Sinica B2018,8,2:4
3Association between plasma brain natriuretic peptide/N-terminal pro-brain natriuretic peptide levels and atrial fibrillation: evidence from a meta-analysis显示文摘Liu Yaowu Xiao Yunyun Chen Xinguang Zhang Fengxiang 2014Chinese Medical Journal2014,,15:4
4The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1显示文摘An eutectic high-entropy alloy consisting Al, Co, Cr, Fe and Ni elements was prepared by vacuum directional solidification technology. The alloy exhibits excellent comprehensive mechanical performance during tension at temperature range of 600–700℃. The microstructure reveals the intersection of twintwin is the prevailing deformation mechanism and the twins play a dual role in strengthening and toughening the alloy in the thermomechanical process. The deformation twin variants I and were formed by the edge dislocation 112 and the mixed dislocation 211 on the {111} crystal planes, respectively. Besides, the dislocation jogs and kinks caused by twin intersection on the slip planes can strengthen the alloy, which may contribute to the high strength(the tensile strengths at the 600°and 700°tensile tests are respectively780 MPa and 630 MPa.). Moreover, the coherent twin boundary migration has the function of coordinating deformation and contributes to the high ductility of the alloy.Yaoli Zhang Jinguo Li Xinguang Wang Yiping Lu Yizhou Zhou Xiaofeng Sun 2019Journal of Materials Science & Technology2019,35,5:4
5Urban structure and the risk of influenza A(H1N1) outbreaks in municipal districts显示文摘Changsha was one of the most affected areas during the 2009 A(H1N1)influenza pandemic in China.Here,we analyze the spatial–temporal dynamics of the 2009 pandemic across Changsha municipal districts,evaluate the relationship between case incidence and the local urban spatial structure and predict high-risk areas of influenza A(H1N1).We obtained epidemiological data on all cases of influenza A(H1N1)reported across municipal districts in Changsha during period May 2009–December 2010 and data on population density and basic geographic characteristics for 239 primary schools,97 middle schools,347 universities,96 malls and markets,674 business districts and 121 hospitals.Spatial–temporal K functions,proximity models and logistic regression were used to analyze the spatial distribution pattern of influenza A(H1N1)incidence and the association between influenza A(H1N1)cases and spatial risk factors and predict the infection risks.We found that the 2009 influenza A(H1N1)was driven by a transmission wave from the center of the study area to surrounding areas and reported cases increased significantly after September 2009.We also found that the distribution of influenza A(H1N1)cases was associated with population density and the presence of nearest public places,especially universities(OR=10.166).The final predictive risk map based on the multivariate logistic analysis showed high-risk areas concentrated in the center areas of the study area associated with high population density.Our findings support the identification of spatial risk factors and highrisk areas to guide the prioritization of preventive and mitigation efforts against future influenza pandemics.Hong Xiao Xiaoling Lin Gerardo Chowell Cunrui Huang Lidong Gao Biyun Chen Zheng Wang Liang Zhou Xinguang He Haining Liu Xixing Zhang Huisuo Yang 2014Chinese Science Bulletin2014,59,5:1
6Positive solutions of fourth-order nonlinear singular Sturm–Liouville eigenvalue problems显示文摘Lishan Liu Xinguang Zhang Yonghong Wu 2006Journal of Mathematical Analysis and Applications2006,,2:1
7Existence of positive solutions for second-order semipositone differential equations on the half-line显示文摘Zhang Xinguang Liu Lishan Wu Yonghong 2007Applied Mathematics and Computation2007,185,:1
8Thermal stability and spectral properties of Er^3+ -doped gadolinium borosilicate glass 显示文摘Sun Jiangting Zhang Jiahua Luo Yongshi Lu Shaozhe Ren Xinguang Chen Baojiu Wang Xiaojun 2006Optical Materials2006,28,4:1
9Positive solutions of fourth order four-point boundary value problems with p-Laplacian operator显示文摘ZHANG Xinguang LID Lishan 2007Math Anal Appl2007,336,:1
10Multiple positive solutions of a singular fractional differential equation with negatively perturbed term显示文摘ZHANG Xinguang LIU Lishan WU Yonghong 2012Mathematical and Computer Modelling2012,55,34:1
11Positive solutions of superlinear semipositone singular Diriehlet boundary value problems显示文摘Zhang Xinguang Liu Lishan 2006J Math Anal Appl2006,316,3:1
12Existence and uniqueness of positive solutions for higher order nonlocal fractional differential equations显示文摘Zhang Xinguang Han Yuefeng 0,,:1
13Progress on deuterated potassium dihydrogen phosphate(DKDP)crystals for high power laser system application显示文摘In this review,we introduce the progress in the growth of large-aperture DKDP crystals and some aspects of crystal quality including determination of deuterium content,homogeneity of deuterium distribution,residual strains,nonlinear absorption,and laser-induced damage resistance for its application in high power laser system.Large-aperture high-quality DKDP crystal with deuteration level of 70%has been successfully grown by the traditional method,which can fabricate the large single-crystal optics with the size exceeding 400 mm.Neutron diffraction technique is an efficient method to research the deuterium content and 3D residual strains in single crystals.More efforts have been paid in the processes of purity of raw materials,continuous filtration technology,thermal annealing and laser conditioning for increasing the laser-induced damage threshold(LIDT)and these processes enable the currently grown crystals to meet the specifications of the laser system for inertial confinement fusion(ICF),although the laser damage mechanism and laser conditioning mechanism are still not well understood.The advancements on growth of large-aperture high-quality DKDP crystal would support the development of ICF in China.Mingxia Xu Baoan Liu Lisong Zhang Hongkai Ren Qingtian Gu Xun Sun Shenglai Wang Xinguang Xu 2022Light(Science & Applications)2022,11,9:1
14Existence and uniqueness of positive solutions for higher order nonlocal fractional differential e- quations显示文摘Zhang Xinguang Han Yuefeng 2012Applied Mathematics Letters2012,25,:1
15Multiple positive solutions of a singular fractional differential equation with nega- tively perturbed term显示文摘Zhang Xinguang Liu Lishan Wu Yonghong 2012Mathematical and Computer Modelling2012,55,:1
16A necessary and sufficient condition for positive solutions for fourth-order multi-point boundary value problems withp-Laplacian显示文摘Zhang Xinguang Liu Lishan 0,,:1
17Photoluminescence of colloidal YVO 4 :Eu/SiO 2 core/shell nanocrystals显示文摘Yan Wang Weiping Qin Jisen Zhang Chunyan Cao Shaozhe Xinguang Ren 2008Optics Communications2008,,6:1
18Positive solutions of superlinear semipostione singular dirichlet boundary value problems显示文摘 Liu Lishan 2006Math Anal Appl2006,316,24:1
19Positive solutions of fourth order four-point boundary value problems with p-laplacian operator显示文摘Zhang Xinguang Liu LiShan 2007J Math Anal Appl2007,336,2:1
20The eigenvalue for a class of singular p-Laplacian fractional differential equations involving the Riemann-Stieltjes integral boundary condition显示文摘Zhang Xinguang Liu Lishan Benchawan Wiwatanapataphee 2014Applied Mathematics and Computation2014,235,:1
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