维普中文期刊产品整合服务
13篇 您的检索式:作者名="LI Hengde"
    题名 作者 年代 出处 被引量
1Biomimetic research Based on the study of the nacre structure 显示文摘Li Hengde Feng Qingling Cui Fuzai 2001J Tsinghua University (Science and Technology)2001,41,4:1
2显示文摘Mao Chuanbin Li Hengde Cui Fuzhai 1999Journal of Crystal Growth1999,206,:1
3The Functionalization of Titanium With EDTA to Induce Biomimetic Mineralization of Hydroxyapatite显示文摘Mao Chuanbin Li Hengde Cui Fuzhai 1999J Mater Chem1999,,9:1
4Oriented growth of hydroxyapatite on (001) textured titanium with functionalized self-assembled silane monolayer as template 显示文摘Mao Chuanbin Li Hengde Cui Fuzhai 1998J Mater Chem1998,8,:1
5Gel electrolytes containing several kinds of particles used in quasi-solid-state dye-sensitized solar cells显示文摘Composite gel electrolytes containing several kinds of particles used as the quasi-solid-state electrolytes in dye-sensitized solar cells (DSSCs) were reported. Mesoporous particles (MCM-41) with unique structures composed of ordered nanochannels were served as a new kind of gelator for quasi-solid-state electrolytes. MCM-41, hydrophobic fumed silica Aerosil R972 and TiO2 nanopatricles P25 were dispersed into gel electrolytes respectively. The solar energy-to-electricity conversion efficiency of these cells is 4.65%, 6.85% and 5.05% respectively under 30 mW·cm-2 illumination. The preparation methods and the particles sizes exert an influence on the performance of corresponding solar cells. Owing to unique pore structures and high specific BET surface area, mesoporous silica MCM-41 was expected to have the potential to afford conducting nanochannels for redox couple diffusion.GENG Yi SUN Xiaodan CAI Qiang SHI Yantao LI Hengde 2006Rare Metals2006,25,z1:1
6Structure of the Bovine ACAD8 Gene and the Association of Its Polymorphism with the Production Traits显示文摘 Xu Shangzhong Gao Xue 2007Journal of Genetics and Genomics2007,34,:1
7PREPARATION OF B-N FILMS BY ION BEAM ASSISTED DEPOSITION显示文摘BN films,synthesized by ion beam assisted deposition,were analysed by RBS,AES,IR spectra and TEM.Formatiom of c-BN phase was shown not only by IR spectra atabsorption peak of 1100 cm-1,but also by electron diffraction pattern.The results ofAES demonstrate an effect of N+ implantation near the film surface.The deposited filmsconsist of three layers,i.e.,ion implantation layer,film layer and mixed intermediatelayer,according to the difference of concentration.The micro-Knoop hardness of the film is25—35 GPa.JIANG Hai TAO Kun LI Hengde Tsinghua University,Beijing,China lecturer,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China 1993Acta Metallurgica Sinica(English Letters)1993,6,11:0
8Coacervate Structures of CdI_2 Thin Film Grown during Phase Transformation显示文摘The microstructure of CdI2 thin film grown during vapor-phase deposition was investigated by scanning electron microscopy (SEM). The thin film deposited on Si crystal consists of numerous sunflower-like aggregates. These aggregates display well self-assembly characteristics. The size of Sunflower-like aggregates is between 12 and 44 μm. Each sunflower-like aggregate is surrounded with many adjacent wings-'petals'. The structure of central region of the 'sunflower' is obviously difFerent from that of the 'petal'. Electron spectroscopy for chemical analysis (ESCA) was employed in determining the chemical valence of the thin film. Self-organization efFect is used to explain the coring growth process of CdI2 thinXiaoyan YE and Lili CAO(Dept. of Chemistry, Tsinghua University, Beijing 100084, China)Jizhong ZHANG and Hengde LI(Dept. of Materials Scieuce & Engineering, Tsinghua University, Beijing 100084, China) 1997Journal of Materials Science & Technology1997,13,4:0
9APPLICATION OF MOLECULAR ORBITAL THEORY TO ANALYSIS OF PHASE STABILITY FOR ALLOYS显示文摘The critical _d vahues ( _ ) of the γ/(γ+σ).γ/(γ+μ) and γ/(γ+γ’) phase boundaries insome ternar alloy phase diagrams at various temperatures are calculated by averaging the _d values of sererai selected characteristic points at the phase boundaries.Approxmateequations for the temperature dependence of the critical _d of γ/(γ+σ).γ/(γ+μ) andγ/(γ+γ’) phase boundaries are established.The accuracy of the analysis is discussed in detail.It is found for the first time that the average value of the bondorder _ at the phase boundaries ts also approximatelr a constant and therefore a criticalaverage bond order _ like - can be introduced for the analysts of phaseYIN Hong TAO Kun PAN Jinsheng LI Hengde Tsinghua University,Beijing,China professor.Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China 1993Acta Metallurgica Sinica(English Letters)1993,6,3:0
10Performance Comparison of Two Efficient Genomic Selection Methods(gsbay & MixP ) Applied in Aquacultural Organisms显示文摘Genomic selection is more and more popular in animal and plant breeding industries all around the world, as it can be applied early in life without impacting selection candidates. The objective of this study was to bring the advantages of genomic selection to scallop breeding. Two different genomic selection tools Mix P and gsbay were applied on genomic evaluation of simulated data and Zhikong scallop(Chlamys farreri) field data. The data were compared with genomic best linear unbiased prediction(GBLUP) method which has been applied widely. Our results showed that both Mix P and gsbay could accurately estimate single-nucleotide polymorphism(SNP) marker effects, and thereby could be applied for the analysis of genomic estimated breeding values(GEBV). In simulated data from different scenarios, the accuracy of GEBV acquired was ranged from 0.20 to 0.78 by Mix P; it was ranged from 0.21 to 0.67 by gsbay; and it was ranged from 0.21 to 0.61 by GBLUP. Estimations made by Mix P and gsbay were expected to be more reliable than those estimated by GBLUP. Predictions made by gsbay were more robust, while with Mix P the computation is much faster, especially in dealing with large-scale data. These results suggested that both algorithms implemented by Mix P and gsbay are feasible to carry out genomic selection in scallop breeding, and more genotype data will be necessary to produce genomic estimated breeding values with a higher accuracy for the industry.SU Hailin LI Hengde WANG Shi WANG Yangfan BAO Zhenmin 2017Journal of Ocean University of China2017,16,1:0
11Fractal Aggregation of Nonequilibrium Iodine显示文摘A large number of particles evaporated from liquid iodine deposited on the wall of a glass container.The deposits demonstrate three structural shapes:globule chain,network formation,and dendrite.The globule chain displays clearly self-similar feature,and can be characterized by fractal geometry.The fractal dimension of the globule chain patterns ranges from D=1.50 to 1.75.The in situ sublimat-ing process of an iodine fractal aggregate was observed.It revealed reversal of the random growthprocess under nonequilibrium condition.The analytical results show that thenucleation-aggregation (NA) model can explain the growth process of iodine fractal aggregate.Jizhong ZHANG Xiaojun YANG Hengde LI Dept.of Materials Science and Engineering,Tsinghua University,Beijing,100084,China 1993Journal of Materials Science & Technology1993,9,5:0
12Analysis on the impact of two winter precipitation episodes on PM_(2.5) in Beijing显示文摘In this paper,the circulation background,the characteristics of meteorological elements configuration in the boundary layer and the stable meteorological conditions in two precipitation episodes(during February 19-21,2015 and February 10-13,2016,respectively)within the Beijing-Tianjin-Hebei region are compared and analyzed.Data from conventional meteorological observations,air quality monitoring,reanalysis and numerical models are used.The results show that before the two precipitation processes in 2015 and 2016,the circulations in the middle and high latitudes of Asia and Europe demonstrate“two troughs and one ridge”.Besides,the weather is stable and the pollutant concentration is relatively high.During the precipitation,the circulation is relatively stable for the episode in 2015,and no obvious change in the synoptic system is observed.However,during the episode in 2016,the formation of blocking high and the enhancement of the average ridge in western Asia cause obvious change in the circulation.The simulation results show that significant removal can be detected in both cases,and the PM_(2.5) wet deposition fluxes are 647 g/ha and 486 g/ha,respectively,with the removal in 2015 slightly stronger than that in 2016.The removal and dissipation of pollutants is determined by the atmospheric diffusion conditions and the precipitation,especially in the former episode.In the case of February 2016,good diffusion conditions and the precipitation demonstrate obvious PM_(2.5) removal effect.In the case of February 2015,the longstanding calm wind with high humidity and the physical quantity configuration in the lower mixed layer lead to the poor pollutant removal.Hengde Zhang Qi Jiang Jikang Wang Kaifei Li Fei Wang 2021Environmental Science and Ecotechnology2021,,1:0
13Structure and Microtribological Mechanism of Teflon Deposited Film显示文摘Teflon film was prepared by ion beam enhanced deposition method. The structure and microtri-bological properties were studied by PHl-5300, FT-lR, XRD and atomic force and friction forcemicroscope (AFM/FFM). The results show that the deposited Teflon is in crystalline state, andits structure is the same as the buIk Teflon. There are two periods in the friction and wear testsfor Teflon film. When the load is less than 70 nN, the micro friction force is linear with the load,and the Teflon does not have the lubricity. But when the load is greater than 70 nN, the frictionforce of Teflon film will stay nearly constant, and worn marks will be created in the friction andwear process. The worn depth of Teflon film increases linearly with the Ioad.Wang, Jihui Lu, Xinchun Wen, Shizhu Li, Hengde Wang, Liduo 1999Journal of Materials Science & Technology1999,15,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费