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| 1 | Single-beam two-photon three-dimensional optical storage in a pyrryl-substituted fulgide photochromic material显示文摘We introduce a high-density three-dimensional optical data storage approach by using a pyrryl-sub-stituted fulgide photochromic material with a method of single-beam two-photon recording and fluorescence confocal readout. The detailed information about the photochromic material and the experimental setup are presented. The experiments about multi-layered recording and readout are carried out with a 100-μm-thick transparent photochromic material film. The results show that the lateral resolution is better than 1 μm, and the longitudinal resolution is about 3 μm. Besides, the readout times for the recorded data aredesirable when using a readout laser power smaller than 5 mW. | Ningfang Liao Mali Gong Duanyi Xu Guosheng Qi Kai Zhang | 2001 | Chinese Science Bulletin2001，46，22： | 6 |
| 2 | The specific carbon isotopic compositions of branched and cyclic hydrocarbons from Fushun oil shale显示文摘Various branched and cyclic hydrocarbons are isolated from the Fushun oil shale and their carbon isotopes are determined. The analytical results show that the branched and cyclic hydrocarbons are fully separated from n-alkanes by 5 molecular-sieve adduction using long time and cold solvent. The branched and cyclic hydrocarbon frac-tion obtained by this method is able to satisfy the analytic requests of GC-IRMS. The carbon isotopic compositions of these branched and cyclic hydrocarbons obtained from the sample indicate that they are derived from photoautotrophic algae, chemoautotrophic bacteria (-33.4—-39.0) and methanotrophic bacteria (-38.4—-46.3). However the long-chain 2-methyl-branched alkanes indicate that their carbon isotopic compositions reflect biological origin from higher plants. The carbon isotopic composition of C30 4-methyl sterane (-22.1? is the heaviest in all studied ste- ranes, showing that the carbon source or growth condition for its precursor, dinoflagellate, may be different from that of regular steranes. The variation trend of d 13C values between isomers of hopanes shows that 13C-enriched precursors take precedence in process of their epimerization. Methanotro-phic hopanes presented reveal the processes of strong trans-formation of organic matter and cycling of organic carbon in the water column and early diagenesis of oil shale. | DUANYi WUBaoxiang ZHENGGuodong ZHANGHui ZHENGChaoyang | 2004 | Chinese Science Bulletin2004，49，4： | 3 |
| 3 | A New Four-Ary Run-Length-Limited (2,12) Code for Multilevel Optical Recording Channels显示文摘 | Hua HU Duanyi XU Longfa PAN | 2005 | Japanese Journal of Applied Physics2005，44，12： | 1 |
| 4 | Evaluation of Surface Segregation of Asphalt Pavement by Using Digital Image Technique 显示文摘 | WANG Duanyi LI Weijie ZHANG Xiaoning | 2005 | Journal of South China University of Technology: Natural Science Edition2005，33，1： | 1 |
| 5 | An improved calculation algorithm of shakedown load in pavement structures 显示文摘 | ZHANG Jiqing WANG Duanyi WAN Cheng | 2012 | Journal of Compu- tational Information Systems2012，8，4： | 1 |
| 6 | An asphalt mix- ture analysis method based on digital image process- ing technology显示文摘 | CAI Xu WANG Duanyi LI Kan | 2012 | International journal of Digital content technology and its applications2012，6，21： | 1 |
| 7 | Evaluation Method of Carbon Emission During Pavemet Life Cycle显示文摘 | PAN Meiping WANG Duanyi | 2011 | Journal of China & Foreign Highway2011，，4： | 1 |
| 8 | STUDY AND COMPUTER SIMULATION OF AN ADAPTIVE STATISTIC MODEL FOR MOBILE COMMUNICATION CHANNEL显示文摘An adaptive statistic model for mobile communication channel is studied and simulated in this paper. According to the model parameters, an error sequence describing the long burst error characteristics of the mobile communication channel is generated on a computer. A test method using threshold technique is presented to verify the accuracy of the adaptive channel model. | Wang Duanyi Hu Zhengming(Beijing University of Posts and Telecommunications, Beijing 100088) | 1996 | Journal of Electronics(China)1996，13，3： | 1 |
| 9 | Regulation of HIF-1 α to Expression of N-myc Downstream Regulated Gene 1 in Colorectal Carcinoma显示文摘Plasmid expressing small interfering RNA (siRNA) against HIF-1a (pSilence-2.1-U6-siRNA) was constructed and transfected into LS174T cells in hypoxia condition.After expression of siRNA against HIF-1α in LS174T cells,expressions of HIF-1α and N-myc downstream regulated gene 1 (NDRG1) gene were inhibited significantly. HIF-1α a transcripts were positive in 67.7% (42/62) and 44.4% (8/18) of colorectal adenocarcinoma and adenoma,respectively. The mean percentage of cells with positive hybridization of HIF-1α mRNA increases with the development from Duke stage A to stage C+D (p <0.05). The positive staining rate of NDRG1 protein was significant higher in colorectal adenocarcinoma group than that in colorectal adenoma group (p<0.05). The level of HIF-1 α transcripts was positively correlated with the level of NDRG1 protein (p <0.05) during colorectal tumor progression. HIF-1a and its down stream gene NDRG1 may play roles in tumor progression of human colorectal carcinoma. | ZHAO Duanyi LIU Zhisu JIANG Congqing BANGOURA Gassimou WU Kailang WU Jianauo | 2007 | Wuhan University Journal of Natural Sciences2007，12，3： | 0 |
| 10 | Plateau Marsh Methane Oxidation as affected by Inorganic N显示文摘In a series of laboratory incubations using soils of two contrasting sites from a temperate marsh on the QinghaiTibet Plateau,potential methane (CH4) oxidation rates were measured to study the effects of inorganic N inputs on CH4 oxidation. For a drained site,subsurface peat (5-15 cm) at an initial 20 μL CH4 L-1 showed a significantly different (P<0.05) CH4 oxidation rate compared to other soil depths,with a maximal rate of 20.9 ng CH4 gDW (dry weight)-1h-1; the underlying mineral soil layers (15-30 and 30-50 cm) also had a strong CH4 oxidation capacity at about an initial 2000 μL CH4 L-1. With a waterlogged site,the CH4 oxidation rate in an aerobic incubation was significantly greater (P<0.05) in the surface soil layer (0-5cm) compared to the 15-30 and 30-50 cm depths. There was generally no or a very weak effect from addition of NO3- on CH4 oxidation. In marked contrast,NH4+ salts,such as (NH4)2SO4,NH4C1 and NH4NO3,exhibited strong inhibitions,which varied as a function of the added salts and the initial CH4 level. Increasing NH4+ usually resulted in greater inhibition and increasing initial CH4 concentrations resulted in less. NH4+ inhibition on CH4 oxidation in natural high-altitude,low-latitude wetlands could be as important as has been reported for agricultural and forest soils. The NH4+ effects on the CH4 oxidation rate need to be further investigated in a wide range of natural wetland soil types. | WANGZhi-Ping DUANYi YANGJu-Rong LILing-Hao HANXing-Guo | 2004 | Pedosphere2004，14，2： | 0 |
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