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35篇 您的检索式:作者名="Dejun Zhao"
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1Predicting the spread of nuclear radiation from the damaged Fukushima Nuclear Power Plant显示文摘Japan suffered a M9.0 earthquake and massive tsunami on March 11, 2011, which seriously damaged the Fukushima Nuclear Power Plant and caused a nuclear crisis. The spread of nuclear radiation from the power plant through the atmosphere and ocean was predicted with a short-term climate forecasting model and an ocean circulation model under some idealized assumptions. If nuclear matter were leaked in the near-ground layer of 992 hPa, the climate model results show that the nuclear radiation would cover North America 10 days after the initial leakage, with the concentration at the forefront dramatically reduced to 10 millionths of the initial model concentration at the source. The radiation would span Europe in 15 days and cover much of the Northern Hemisphere in 30 days. If the initial leakage was assumed to occur in the layer 5000-m above the ground, the radiation would cover Europe in 10 days and cover much of the Northern Hemisphere in 15 days. Moreover, under the assumption that the nuclear matter leaked in the 10000-m layer, the radiation would affect much of China after 10 days. The ocean circulation model indicates that the nuclear material would be slowly transported northeast of Fukushima and reach 150°E in 50 days, and the nuclear debris in the ocean would be confined to a narrow band. Compared with the spread in the ocean, the area affected by leaked nuclear radiation in the atmosphere would be very large. Atmospheric monitors in North America and Europe will be helpful for estimating the effect in China of any leaked nuclear material.QIAO FangLi WANG GuanSuo ZHAO Wei ZHAO JieChen DAI DeJun SONG YaJuan SONG ZhenYa 2011Chinese Science Bulletin2011,56,18:18
2WHEAT STRIPE RUST AND INTEGRATION OF SUSTAINABLE CONTROL STRATEGIES IN CHINA显示文摘Stripe (yellow) rust caused by Puccinia striiformis f. sp. tritici occurs in almost allwheat-producing regions of the world. Severe countrywide epidemics in Chinahave caused substantial yield losses. Growing resistant cultivars is the beststrategy to control this disease but the pathogen can overcome resistance inwheat cultivars. The high variation in the virulence of the pathogen combinedwith the large areas of susceptible wheat cultivars enables the pathogenpopulation to increase rapidly and disperse over long distances under favorableenvironmental conditions, resulting in severe pandemics within croppingseasons. Current stripe rust control measures are based on many years ofresearch including the underlying epidemiology regarding year-to-year survivalof the pathogen, pathways of pathogen dispersal within seasons and years, therole of P. striiformis sexual hybridization, the use of resistance sources inbreeding programs, and year-round surveillance of national wheat crops that arepresent in different parts of the country throughout the year. All these strategiesdepend on accurate prediction of epidemics, more precise use of fungicides tomeet national requirements and better deployment of resistance genes. Newideas with potential application in sustainable protection of stripe rust includenegative regulatory gene editing, resistance gene overexpression and biologicalcontrol based on microbiomes.Qingdong ZENG Jie ZHAO Jianhui WU Gangming ZHAN Dejun HAN Zhensheng KANG 2022Frontiers of Agricultural Science and Engineering2022,9,1:5
3Optimized design and experiment on ring mold pelletizer for producing biomass fuel pellets显示文摘The forming process of biomass fuel pellets using a ring mold pelletizer was analyzed,optimized,tested and evaluated in this study.The effects of stress amplitude and the stress ratio on the fatigue failure of the ring mold under 4-,3-,and 2-roller designs were investigated.Depending on the calculation of stress amplitude acting on the ring mold,the 4-roller design was chosen for having the smallest value of stress amplitude in this condition.After determining the main design parameters,a three-dimensional model of the ring mold pelletizer was established based on the Pro/Engineer software,and the model was transferred into ADAMS software through Mechanism/Pro which is a dedicated interface software.The ADAMS software was used to run simulations.In order to obtain the highest efficiency and the lowest power consumption,the optimal result was the 4-roller design.Finally,a prototype of the ring mold pelletizer with four rollers was designed and manufactured for biomass fuel pellet production.Corn stover biomass was used as material for experimental manufacturing of fuel pellets.Test and evaluation showed that the optimized pellet durability was 99.79%with ground corn stover particles passing a screen size of 1.97 mm,moisture content of 21.2%w.b.and a material moisture conditioning time of 3.82 h.Pellets formed in the prototype ring mold pelletizer using corn stover had acceptable durability according to European standards.Gao Wei Lope G Tabil Zhao Rongfei Liu Dejun 2016International Journal of Agricultural and Biological Engineering2016,9,3:3
4Optimization of microwave-assisted extraction of bioactive alkaloids from lotus plumule using response surface methodology显示文摘In this work,a fast and efficient microwave-assisted extraction(MAE) method was developed to extract main bioactive alkaloids from lotus plumue.To optimize MAE conditions,three main factors were selected using univariate approach experiments,and then central composite design(CCD).The optimal extraction conditions were as follows:methanol concentration of 65%,microwave power of 200 W,and extraction time of 260 s.A high performance liquid chromatography–diode array detector(HPLC–DAD) method was established to quantitatively analyze these phytochemicals in different lotus plumule samples and in different part of lotus.Chromatographic separation was carried out on an Agilent Zorbax Extend-C_(18) column(4.6 mm×150 mm,3.5 μm).Gradient elution was applied with the mobile phase constituted with 0.1% triethylamine in water(A)and acetonitrile(B):40%-70% B at 0-8 min,70%-100% B at 8–9 min,100% B for 2 min,and then equilibrated with 40% B for 2 min.Wei Xiong Xianqiang Chen Guangping Lv Dejun Hu Jing Zhao Shaoping Li 2016Journal of Pharmaceutical Analysis2016,6,6:3
5In vitro comparison of the hemocompatibility of diamond-like carbon and carbon nitride coatings with different atomic percentages of N显示文摘Carbon nitride (CNx) and diamond-like carbon (DLC) coatings were prepared by dc magnetron sputtering at room temperature. Different partial pressures of N2 were used to synthesize CNx to evaluate the relationship between the atomic percentage of nitrogen and hemocompatibility. Auger electron spectroscopy and atomic force microscopy indicated atomic percentages of N of 0.12 and 0.22 and that the CNx coatings were smooth. An in vitro study of the hemocompatibility of the coatings revealed that both CNx coatings had better anticoagulant properties and lower platelet adhesion than DLC. Compared with CN0.12, the CN0.22 coating showed longer dynamic clotting time (about 42 min), static clotting time (23.6 min) and recalcification time (45.6 s), as well as lower platelet adhesion (102 cells μm 2), aggregation, and activation. The presence of nitrogen in the CNx coatings induced their enhanced hemocompatibility compared with DLC.ZHAO MengLi LI DeJun ZHANG YiTeng GUO MeiXian DENG XiangYun GU HanQing WAN RongXin 2012Science China(Life Sciences)2012,55,4:3
6On Weighted L^p-Approximation by Weighted Bernstein-Durrmeyer Operators显示文摘In the present paper,we establish direct and converse theorems for weighted Bernstein-Durrmeyer operators under weighted L^p-norm with Jacobi weight w(x) = x~α(1-x)~β.All the results involved have no restriction α,β < 1-1/p,which indicates that the weighted Bernstein-Durrmeyer operators have some better approximation properties than the usual Bernstein-Durrmeyer operators.Meiling Wang Dansheng Yu Dejun Zhao 2018Analysis in Theory and Applications2018,34,1:2
7Studies on the extraction of chromium (111) by emulsion liquid membrane 显示文摘LIFENG ZHAO DEJUN FEI YAGU DANG 2010Journal of Hazardous Materials2010,78,:1
8MiR‐214 Promotes the Alcohol‐Induced Oxidative Stress via Down‐Regulation of Glutathione Reductase and Cytochrome P450 Oxidoreductase in Liver Cells显示文摘Xiaolong Dong Hong Liu Fangjie Chen Dejun Li Yanyan Zhao 2014Alcohol Clin Exp Res2014,,1:1
9Long- term toxicity effects of cadmium and lead on Bufo raddei tadpoles 显示文摘ZHANG Yingmei HUANG Dejun ZHAO Dongqin 2007Bull Environ Contain Toxicol2007,79,2:1
10Effect of node deleting on network structure显示文摘Ke Dong Heping Zhao and Dejun Li 2007Physica A2007,379,:1
11Studies on the ex- traction of chromium (III) by emulsion liquid membrane 显示文摘Lifeng Zhao Dejun Fei Yagu Dang 2010Jour- nal of Hazardous Materials2010,78,:1
12Studies on the extraction of chromium(III) by emulsion liquid membrane显示文摘Lifeng Zhao Dejun Fei 0,,178:1
13A Study of Quantum Confinement Properties of Photogenerated Charges in ZnO Nanoparticles by Surface Photovoltage Spectroscopy 显示文摘Lin Yanhong Wang Dejun Zhao Qidong 2004Journal of Physical Chemistry B2004,108,:1
14Functional characterization of rice OsDof12显示文摘Dejun Li Chunhua Yang Xiaobing Li Qiang Gan Xianfeng Zhao Lihuang Zhu 2009Planta2009,,6:1
15Salt- induced vesicles formation from single anionic suffactant SDBS and its mixture with LSB in aqueous solution显示文摘ZHAI LIMIN ZHAO MEI SUN DEJUN 2005J Phys Chem B2005,109,:1
16Effects of deposition temperature on electrodeposition of zinc–nickel alloy coatings显示文摘Xiaoping Qiao Helin Li Wenzhen Zhao Dejun Li 2013Electrochimica Acta2013,,:1
17Comparison of polysaccharides from two species of Ganoderma显示文摘XIE Jing ZHAO Jing HU Dejun 2012Molecules2012,17,1:1
18Studies on the extraction of chromium (III) by emulsion liquid mem- brane显示文摘Lifeng Zhao Dejun Fei Yagu Dang 2010Journal of Hazardous Materials2010,178,13:1
19Illumination ratio image:Synthesizing and recognition with varying illuminations显示文摘Jiali Zhao Yong Su Dejun Wang 2003Pattern Recognition Letter2003,24,:1
20Fabrication and photoelectric oxygen sensing characteristics of electrospun Co doped ZnO nanofibres显示文摘Min Yang Tengfeng Xie Liang Peng Yiyang Zhao Dejun Wang 2007Applied Physics A2007,,2:1
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