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17篇 您的检索式:作者名="Jingming ZHU"
    题名 作者 年代 出处 被引量
1Spatial and temporal variations of forest LAI in China during 2000-2010显示文摘Forests are crucial terrestrial ecosystems.Their leaf area index (LAI) is a key parameter determining the exchange of matter and energy between the atmosphere and the ground surface.In this study,MOD 09A1 and MCD 43A1 data were input into an inversion model based on the 4-scale geometric optical model to retrieve 8-d 500 m LAI products in China during the period 2000 to 2010.The resulting LAI product was validated using LAI measured in 6 typical areas.The spatial and temporal variations of forest LAI and its relationships with temperature and precipitation were analyzed.The results show that the accuracy of the 500 m LAI product was above 70% in the 6 typical areas,indicating the reliability of this product.From 2000 to 2010,forest LAI in northeast,north,and south central China showed increasing trends.However,forest LAI in southeast and parts of southwest China showed downward trends,mainly because of the significant decrease observed during the period 2008 to 2010.Annual mean forest LAI positively correlated with annual mean temperature (AMT) in northeastern China and negatively correlated with AMT in southwest China.It had positive correlations with annual total precipitation in central south and north China.The abnormal climate conditions in 2001 and 2009 caused forest LAI to be obviously lower than normal in regions south of the Qinling Mountains and Huaihe River.Annual mean LAI decreased by more than 1.0 in some areas.LIU YiBo JU WeiMin CHEN JingMing ZHU GaoLong XING BaiLing ZHU JingFang HE MingZhu 2012Chinese Science Bulletin2012,57,22:22
2Wigner-Ville distribution and cross Wigner-Ville distribution of noisy signals显示文摘The Wigner-Ville distribution (WVD) and the cross Wigner-Ville distribution (XWVD) have been shown to be effcient in the estimation of instantaneous frequency (IF). But the statistical result of the IF estimation from XWVD peak is much better than using WVD peak. The reason is given from a statistical point of view. Theoretical studies show that XWVD of the analyzed signal can be estimated from XWVD of the noise-contaminated signal. The estimation is unbiased, and the variance is equal to that of noise. In this case, WVD cannot be estimated from WVD of the noise-contaminated signal. Therefore, higher SNR is required when WVD is used to analyze signals.Chen Guanghua Ma Shiwei Liu Ming Zhu Jingming Zeng Weimin 2008Journal of Systems Engineering and Electronics2008,19,5:4
3RECOVERING RE FROM LEACHING LIQUOR OF RARE EARTH ORE BY EXTRACTION显示文摘RECOVERINGREFROMLEACHINGLIQUOROFRAREEARTHOREBYEXTRACTIONChiRu'an;XuJingming;HePeijiong;ZhuYongjun(InstituteofNuclearEnergyTec...Chi Ru’an Xu Jingming He Peijiong Zhu Yongjun(Institute of Nuclear Energy Technolegy,Tsinghua University,Beijing 100084) 1995中国有色金属学会会刊:英文版1995,5,4:4
4Biodegradation Kinetics for Pre-treatment of Klebsiella pneumoniae Waste with Autothermal Thermophilic Aerobic Digestion显示文摘Biodegradation parameters and kinetic characteristics for pre-treating waste strains of Klebsiella pneu-moniae were studied in laboratory scale with an insulated reactor by an innovative technique,autothermal thermo-philic aerobic digestion(ATAD) . Based on an Arrhenius-type equation,an empirical model was developed to corre-late the removal of total suspended solid(TSS) with the initial TSS concentration,influent reaction temperature,aeration rate and stirring rate. The reaction temperatures of the ATAD system could be raised from the ambient temperatures of 25 °C to a maximum temperature of 65 °C. The exponentials for the initial TSS concentration,aeration rate and stirring rate were 1.579,-0.8175 and-0.6549,respectively,and the apparent activation energy was 6.8774 kJ·mol-1. The correlation coefficient for the pre-exponential factor was 0.9223. The TSS removal effi-ciency predicted by the model was validated with an actual test,showing a maximum relative deviation of 10.79%. The new model has a good practicability.LIU Jingming SUN Dongdong LIU Hui NIE Yingbin ZHU Zhirong 2010Chinese Journal of Chemical Engineering2010,18,6:2
5Biodiesel preparation with solid base catalyst under ultrasonic assistant 显示文摘Shi Aiping Zhu Jingming Ma Qian 2014Appl Mech Mater2014,,:1
6Chlorinated polymerized small molecule acceptor enabling ternary all-polymer solar cells with over 16.6% efficiency显示文摘Recently,all-polymer solar cells(all-PSCs) based on polymerized small molecule acceptors(PSMAs) have achieved significant progress.Ternary blending has proven to be an effective strategy to further boost the power conversion efficiency(PCE) of the all-PSCs.Herein,a new A-DA′D-A small-molecule acceptor-based PSMA(named as PYCl-T) was designed and synthesized,which possesses similar polymer backbone with the widely used PY-IT,but with chlorine substitution on the A-end groups in the A-DA′D-A structure.PYCl-T was then employed as the third component into the PM6:PY-IT system and the ternary all-PSCs based on PM6:PY-IT:PYCl-T demonstrated a high PCE of 16.62%(certified value of 16.3%).Moreover,the PCE of 15.52% was realized in the enlarged ternary all-PSCs with effective area of 1 cm^(2),indicating the great potential in large-scale applications.Moreover,the optimized ternary blend films of PM6:PY-IT:PYCl-T show excellent thermal stability at 150 ℃.This work demonstrates that the utilization of a ternary blend system involving two well-compatible PSMA polymer acceptors is an effective strategy to boost the performance of the all-PSCs.Ke Hu Jiaqi Du Can Zhu Wenbin Lai Jing Li Jingming Xin Wei Ma Zhanjun Zhang Jinyuan Zhang Lei Meng Yongfang Li 2022Science China Chemistry2022,65,5:1
7The efficacy of a voice training program:a case-control study in China显示文摘Jingming Duan Li Zhu Yan Yan 2010Eur Arch Otorhinolaryngol2010,267,1:1
8The efficacy of a voice training program: a case–control study in China显示文摘Jingming Duan Li Zhu Yan Yan Tao Pan Peiquan Lu Furong Ma 2010European Archives of Oto-Rhino-Laryngology2010,,1:1
9Lands lide disaseter in the bess area of China显示文摘 Zhu Chunyun Zheng Jingming etc 2002Joural of Forestry Research2002,12,2:1
10Investigation of the extraction complexes of light lanthanides (Ⅱ) with Bis (2,4,4-trimethyl pentyl) dithiophosphinic acid by EXAFS, IR, and MS in comparison with the ameriticium( Ⅲ ) complex显示文摘TIAN Guoxin ZHU Yongjun XU Jingming 2003Inorg Chem2003,42,:1
11Preparation and characterization of zwitterionic surfactant-modified montmorillonites显示文摘Jianxi Zhu Yanhong Qing Tong Wang Runliang Zhu Jingming Wei Qi Tao Peng Yuan Hongping He 2011Journal of Colloid And Interface Science2011,,2:1
12Investigation of the extraction complexes of light lanthanides(III) with bis(2,4,4-trimethylpentyl) dithiophosphinic acid by EXAFS,IR,and MS in comparison with the americium(III)complex显示文摘Tian Guoxin Zhu Yongjun Xu Jingming 0,,03:1
13Biodiesel prepara- tion with solid base catalyst under ultrasonic assistant 显示文摘SHI Aiping ZHU Jingming MA Qian 2014Appl Mech Mater2014,,:1
14The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function,atrio-ventricular node function and hemodynamics显示文摘Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the follow-ing data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT) ,index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency(WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after adminis-tration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P < 0.01);the MAP decreased(P < 0.01) and the HR increased drastically(P < 0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg) nor nicardipine(10μg/kg,20μg/kg) has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.Jingming Zhu Ningning Hui Xiuhong Jiang Huaxing Zhang Chengzhang Fu 2007Journal of Nanjing Medical University2007,21,6:0
15Revealing alkali metal ions transport mechanism in the atomic channels of Au@a-MnO_(2)显示文摘Understanding alkali metal ions’(e.g.,Li^(+)/Na^(+)/K^(+))transport mechanism is challenging but critical to improving the performance of alkali metal batteries.Herein using a-MnO_(2)nanowires as cathodes,the transport kinetics of Li^(+)/Na^(+)/K^(+)in the 2×2 channels of a-MnO_(2)with a growth direction of[001]is revealed.We show that ion radius plays a decisive role in determining the ion transport and electrochemistry.Regardless of the ion radii,Li^(+)/Na^(+)/K^(+)can all go through the 2×2 channels of a-MnO_(2),generating large stress and causing channel merging or opening.However,smaller ions such as Li^(+)and Na^(+)cannot only transport along the[001]direction but also migrate along the<110>direction to the nanowire surface;for large ion such as K^(+),diffusion along the<110>direction is prohibited.The different ion transport behavior has grand consequences in the electrochemistry of metal oxygen batteries(MOBs).For Li-O_(2)battery,Li^(+)transports uniformly to the nanowire surface,forming a uniform layer of oxide;Na^(+)also transports to the nanowire surface but may be clogged locally due to its larger radius,therefore sporadic pearl-like oxides form on the nanowire surface;K^(+)cannot transport to the nanowire surface due to its large radius,instead,it breaks the nanowire locally,causing local deposition of potassium oxides.The study provides atomic scale understanding of the alkali metal ion transport mechanism which may be harnessed to improve the performance of MOBs.Jingzhao Chen Yong Su Hongjun Ye Yushu Tang Jitong Yan Zhiying Gao Dingding Zhu Jingming Yao Xuedong Zhang Tingting Yang Baiyu Guo Hui Li Qiushi Dai Yali Liang Jun Ma Bo Wang Haiming Sun Qiunan Liu Jing Wang Congcong Du Liqiang Zhang Yongfu Tang Jianyu Huang 2023Journal of Energy Chemistry2023,,7:0
16In situ Observation of Li Deposition-Induced Cracking in Garnet Solid Electrolytes显示文摘Lithium(Li)penetration through solid electrolytes(SEs)induces short circuits in Li solid-state batteries(SSBs),which is a critical issue that hinders the development of high energy density SSBs.While cracking in ceramic SEs has been often shown to accompany Li penetration,the interplay between Li deposition and cracking remains elusive.Here,we constructed a mesoscale SSB inside a focused ion beam-scanning electron microscope(FIB-SEM)for in situ observation of Li deposition-induced cracking in SEs at nanometer resolution.Our results revealed that Li propagated predominantly along transgranular cracks in a garnet Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO).Cracks appeared to initiate from the interior of LLZTO beneath the electrode surface and then propagated by curving toward the LLZTO surface.The resulting bowl-shaped cracks resemble those from hydraulic fracture caused by high fluid pressure on the surface of internal cracks,suggesting that the Li deposition-induced pressure is the major driving force of crack initiation and propagation.The high pressure generated by Li deposition is further supported by in situ observation of the flow of filled Li between the crack flanks,causing crack widening and propagation.This work unveils the dynamic interplay between Li deposition and cracking in SEs and provides insight into the mitigation of Li dendrite penetration in SSBs.Jun Zhao Yongfu Tang Qiushi Dai Congcong Du Yin Zhang Dingchuan Xue Tianwu Chen Jingzhao Chen Bo Wang Jingming Yao Ning Zhao Yanshuai Li Shuman Xia Xiangxin Guo Stephen J.Harris Liqiang Zhang Sulin Zhang Ting Zhu Jianyu Huang 2022Energy & Environmental Materials2022,5,2:0
17A Metric Space with Transfinite Asymptotic Dimension 2ω+1显示文摘The authors construct a metric space whose transfinite asymptotic dimension and complementary-finite asymptotic dimension are both 2ω+1,whereωis the smallest infinite ordinal number.Therefore,an example of a metric space with asymptotic property C is obtained.Yan WU Jingming ZHU 2021Chinese Annals of Mathematics,Series B2021,42,3:0
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