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9篇 您的检索式:作者名="ZHENG Chenggang"
    题名 作者 年代 出处 被引量
1Improving the accuracy of GRACE Earth's gravitational field using the combination of different inclinations显示文摘In this paper, the GRACE Earth’s gravitational eld complete up to degree and order 120 is recovered based on the combination of di erent inclinations using the energy conservation principle. The results show that because di erent inclinations of satellite are sensitive to the geopotential coe cients with di erent degrees l and orders m, the design of GRACE exploiting 89° inclination can e ectively improve the accuracy of geopotential zonal harmonic coe cients. However, it is less sensitive to the geopotential tesseral harmonic coef- cients. Accordingly, the second group of GRACE exploiting lower inclination is required to determine high-accurately the geopotential tesseral harmonic coe cients and cover the shortage of the single group of GRACE exploiting 89o inclination. Two groups of GRACE individually exploiting 89° + (82°–84°) inclinations are the optimal combination of the Earth’s gravitational eld recovery complete up to degree and order 120. In the degree 120, the joint accuracy of cumulative geoid height based on two groups of GRACE individually exploiting 89° and 83° inclinations is averagely two times higher than the accuracy of a group of GRACE exploiting 89° inclination.Wei Zheng Chenggang Shao Jun Luo Houze Xu 2008Progress in Natural Science:Materials International2008,18,5:34
2MiR-182 is up-regulated and targeting Cebpa in hepatocellular carcinoma显示文摘MicroRNAs(miRNAs) are endogenous small non-coding RNAs that repress their targets at post transcriptional level.Existing studies have shown that miRNAs are important regulatory genes in hepatocellular carcinoma(HCC),as either tumor suppressors or oncogenes.MiR-122 is normally downregulated in HCC and regarded as a tumor suppressor.Recently miR-122 has been reported to be regulated by CEBPA,which is then involved in a novel pathway to influence proliferation of tumor cells.However it is unknown whether CEBPA is regulated by miRNAs in HCC.In this study,we find that miR-182 is upregulated in HCC model rat,and represses CEBPA in both rat and human.This further improves the current CEBPA/miR-122 pathway that controls the proliferation of tumor cells.These results suggest that miR-182 is a potential oncogene in HCC and could be used as a diagnostic marker and drug target of HCC.Chenggang Wang Ren Ren Haolin Hu Changjun Tan Miao Han Xiaolin Wang Yun Zheng 2014Chinese Journal of Cancer Research2014,26,1:13
3Medium optimization for keratinase production in hair substrate by a new Bacillus subtilis KD-N2 using response surface methodology显示文摘Chenggang Cai Xiaodong Zheng 2009Journal of Industrial Microbiology & Biotechnology2009,,7:1
4Studies on the extracting technical conditions of inulin from Jerusalem artichoke tubers显示文摘Wei Lingyun Wang Jianhua Zheng Xiaodong Teng Da Yang Yalin Cai Chenggang Feng Tianhua Zhang Fan 2006Journal of Food Engineering2006,,3:1
5Investigation of a hy- drocarbon-degrading strain, Rhodococcus tuber Z25, for the poten- tial of microbial enhanced oil recovery 显示文摘Zheng Chenggang Yu Li Huang Lixin 2012Journal of Petroleum Science and Engineering2012,81,1:1
6Utilization of diatomite/chitosan-Fe (Ill) composite for the removal of anionic azo dyes from wastewater: Equilibrium, kinetics and thermodynamics 显示文摘Zheng Liuchun Wang Chenggang ShuYuehong 2015Col- loidsSurf A2015,468,:1
7Impact of hepatitis B vaccination among children in Guangdong Province, China显示文摘Jianpeng Xiao Jikai Zhang Chenggang Wu Xiaoping Shao Guowen Peng Zhiqiang Peng Wenjun Ma Yonghui Zhang Huizhen Zheng 2012International Journal of Infectious Diseases2012,,9:1
8A comparison between strain sensing behaviors of carbon black/polypropylene and carbon nanotubes/polypropylene electrically conductive composites显示文摘Junhui Zhao Kun Dai Chenggang Liu Guoqiang Zheng Bo Wang Chuntai Liu Jingbo Chen Changyu Shen 2013Composites Part A2013,,:1
9THERMAL PROPERTY, MISCIBILITY AND CRYSTALLIZATION BEHAVIOR OF POLY(3-HYDROXYBUTYRATE-co-3-YDROXYHEXANOATE) AND POLY(BUTYLENE SUCCINATE-ADIPATE) (PHBHHX/PBSA) BLENDS显示文摘Blends of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) and poly(butylene succinate-adipate) (PBSA), both biodegradable semicrystalline polyesters, were prepared with the ratio of PHBHHx/PBSA ranging from 80/20 to 20/80 by melt mixing method. Differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), dynamic mechanical thermal analysis (DMA), polarizing optical microscopy (POM) and wide angle X-ray diffractometer (WAXD) were used to study the miscibility and crystallization behavior of PHBHHx/PBSA blends. Experimental results indicate that PHBHHx is immiscible with PBSA as shown by the almost unchanged glass transition temperature and the biphasic melt.WANG Shufang GUO Tianying TAO Jian ZHENG Chenggang ZHANG Banghua SONG Cunjiang 2005Chinese Journal of Reactive Polymers2005,14,1:0
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