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37篇 您的检索式:作者名="JianHong Guo"
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1China's wetland change (1990-2000) determined by remote sensing显示文摘Two wetland maps for the entire China have been produced based on Landsat data acquired around 1990 and 2000. Wetlands in China have been divided into 3 broad categories with 15 sub-categories except rice fields. In 1990, the total wetland area in China was 355208 km2 whereas in 2000 it dropped to 304849 km2 with a net loss of 50360 km2. During an approximate 10-year period, inland wetland reduced from 318326 to 257922 km2, coastal wetland dropped from 14335 to 12015 km2, while artificial wetland increased from 22546 to 34911 km2. The greatest natural wetland loss occurred in Heilongjiang, Inner Mon- golia, and Jilin with a total loss of over 57000 km2 of wetland. In western China, over 13000 km2 of wetlands were newly formed in Xinjiang, Tibet, and Qinghai. About 12000 km2 of artificial wetlands were also added for fish farm and reservoir constructions. The newly formed wetlands in western China were caused primarily by climate warming over that region whereas the newly created artificial wetlands were caused by economic developments. China’s wetland loss is caused mainly by human activities.Peng Gong ZhenGuo Niu Xiao Cheng KuiYi Zhao DeMin Zhou JianHong Guo Lu Liang XiaoFeng Wang DanDan Li HuaBing Huang et al. 2010Science China Earth Sciences2010,53,7:28
2Geographical characteristics of China’s wetlands derived from remotely sensed data显示文摘In this paper, we report the first wetland mapping of the entire China using Landsat enhanced thematic mapper plus (ETM+) data. These data were obtained from the Global Land Cover Facility at the University of Maryland spanning from 1999 to 2002. A total of 597 scenes of Landsat images were georeferenced and mosaiced. Manual image interpretation of satellite images was aided with elevation data, soil data, land cover/land use data and Google Earth. The minimum mapping unit is 10 pixel × 10 pixel, equivalent to 9 ha. The aim of our first round of mapping was only targeted at the boundary delineation of any type of wetland except those wetlands that are under agricultural use (i.e., paddy fields), which has already been well mapped by others. Our interpretation results indicate that a total of 359478 km2 of wetlands are of non-agricultural use. Among our preliminarily mapped wetland, 339353 km2 are inland wetland, 2786 km2 are non-agricultural artificial wetland, and 17609 km2 are coastal wetland. Because low-tide is rarely captured in satellite images, an under-estimation of coastal wetland is inevitable. We conducted some statistics based on our mapped wetlands and compared them with those previously obtained from a number of sources including a land cover/land use map made with satellite images during the late 1990s and early 2000s, a marshland map developed in approximately the same period, survey data of coastal wetland in early 1980s, and area data for approximately 400 larger patches of marshland in China compiled in 1996. Because some inconsistencies exist in the guidelines of those different wetland surveys, difference in area is expected. Some further comparison indicates that the wetland distributions derived from the preliminary wetland map are reasonable and more objective than other sources. The mapping process also indicated that the method adopted by us was efficient and cost-effective. We also found that in order to ensure comparability of the wetland maps developed at different times, a set of standard guidelines on the wetland categories to be mapped, and the mapping methods to be used must be well conceived, developed and effectively employed. We carried out some initial geographical analysis on the distribution of wetlands.NIU ZhenGuo GONG Peng CHENG Xiao GUO JianHong WANG Lin HUANG HuaBing SHEN ShaoQing WU YunZhao WANG XiaoFeng WANG XianWei YING Qing LIANG Lu ZHANG LiNa WANG Lei YAO Qian YANG ZhenZhong GUO ZiQi DAI YongJiu 2009Science China Earth Sciences2009,52,6:15
3Influences of different types of magnetic fields on HCFC-141b gas hydrate formation processes显示文摘In this study, visualizations and experiments are carried out on the influence of static and rotating magnetic fields on the characteristics of HCFC-141b gas hydrate formation, such as crystallization form, formation temperature and induction time. It has been found that a proper rotating magnetic field can considerably improve the low-pressure gas hydrate formation process, especially in increasing the formation temperature and shortening the induction time. The mor- phology of the gas hydrate formation appears rather complex and compact. However, a proper static magnetic field can make the gas hydrate crystal more organized, which will be benefit to heat transfer.SHU Bifen MA Xiaolin GUO Kaihua LI Jianhong 2004Science China Chemistry2004,47,5:14
4Infective viruses produced from full-length complementary DNA of swine vesicular disease viruses HK/70 strain显示文摘The full-length cDNA clone of swine vesicular disease virus HK/70 strain named pSVOK12 was constructed in order to study the antigenicity, replication, maturation and pathogenicity of swine vesicular disease virus. In vitro transcription RNA from pSVOK12 transfected IBRS-2 cells and the re- covered virus RNA were isolated and sequenced, then indirect hemagglutination test, indirect im- munofluorescence assays, eleectron microscope test, 50% tissue culture infecting dose (TCID50) assays and mouse virulence studies were performed to study the antigenicity and virulence of the recovered virus. The result showed that the infectious clones we ob- tained and the virus derived from pSVOK12 had the same biological properties as the parental strain HK/70. The full-length infectious cDNA clone, pSVOK12, will be very useful in studies of the anti- genicity, virulence, pathogenesis, maturation and replication of SVDV.ZHENG Haixue LIU Xiangtao SHANG Youiun WU Jinyan BAI Xingwen JIN Ye SUN Shiqi GUO Huichen TIAN Hong FENG Xia YIN Shuanghui GUO Jianhong CONG Guozheng LIU Zaixin CHANG Huiyun MA Junwu XIE Qingge 2006Chinese Science Bulletin2006,51,17:6
5Dry electrode for the measurement of biopotential signals显示文摘This paper introduces a kind of silicon-based dry electrode for measuring biological signals.It uses microneedle arrays to penetrate into the stratum corneum to reduce skin impedance.The dry electrode requires neither skin preparation nor the electrolytic gel,is easy to use and causes no skin allergy.Two different technologies are chosen to manufacture microneedle arrays of dry electrode.One is deep dry etching combined with isotropic wet etching.The other is mechanical dicing combined with chemical wet etching (including isotropic wet etching and anisotropic wet etching).Microneedle arrays are coated with metal and divided into 25 mm 2 as dry electrode patch.Impedance testing shows that the impedance value of dry electrode can be comparable with that of commercial electrode in the 20 Hz-10 kHz frequency range.The steady-state visual evoked potential recording and analysis prove that the dry electrode can be used to detect electroencephalography.WANG Yu PEI WeiHua GUO Kai GUI Qiang LI XiaoQian CHEN HongDa YANG JianHong 2011Science China(Information Sciences)2011,54,11:6
6An improved Landsat Image Mosaic of Antarctica显示文摘A revised Landsat Image Mosaic of Antarctica (LIMA) is presented, using the 1073 multi-band scenes of the original Landsat-7 ETM+ LIMA image collection available at the United States Geological Survey (USGS: http://gffzza64998f73d704ee0hnxcv9bw0c0qc6owp.ffgz.tsg.suse.edu.cn/). Three improvements have been applied during the data processing: (1) DN saturation is adjusted by adopting a linear regression, which has a lower root mean square error than the ratio regression used by LIMA; (2) solar elevation angle is calculated using pixel-level latitude/longitude and the acquisition time and date of the central pixel of the scene, improving slightly upon the bilinear interpolation of the solar elevation angles of scene corners applied in LIMA; and (3) two additional image bands, Band 5 and Band 7, are sharpened using the panchromatic band (Band 8) and a Gram-Schmidt Spectral Sharpening algorithm to more easily distinguish snow, cloud and exposed rocks. The final planetary reflectance product is stored in 16-bit bands to preserve the full radiometric content of the scenes. A comparative statistical analysis among 12 sample regions indicates that the new mosaic has enhanced visual qualities, information entropy, and information content for land cover classification relative to LIMA.HUI FengMing CHENG Xiao LIU Yan ZHANG YanMei YE YuFang WANG XianWei LI Zhan WANG Kun ZHAN ZhiFei GUO JianHong HUANG HuaBing LI XiuHong GUO ZiQi GONG Peng 2013Science China Earth Sciences2013,56,1:4
7Fault Line Detection Using Waveform Fusion and One-dimensional Convolutional Neural Network in Resonant Grounding Distribution Systems显示文摘Effective features are essential for fault diagnosis.Due to the faint characteristics of a single line-to-ground(SLG)fault,fault line detection has become a challenge in resonant grounding distribution systems.This paper proposes a novel fault line detection method using waveform fusion and one-dimensional convolutional neural networks(1-D CNN).After an SLG fault occurs,the first-half waves of zero-sequence currents are collected and superimposed with each other to achieve waveform fusion.The compelling feature of fused waveforms is extracted by 1-D CNN to determine whether the fused waveform source contains the fault line.Then,the 1-D CNN output is used to update the value of the counter in order to identify the fault line.Given the lack of fault data in existing distribution systems,the proposed method only needs a small quantity of data for model training and fault line detection.In addition,the proposed method owns fault-tolerant performance.Even if a few samples are misjudged,the fault line can still be detected correctly based on the full output results of 1-D CNN.Experimental results verified that the proposed method can work effectively under various fault conditions.Jianhong Gao Moufa Guo Duan-Yu Chen 2021CSEE Journal of Power and Energy Systems2021,7,2:3
8Density Functional Theoretical Studies on the Methanol Adsorption and Decomposition on Ru(0001) Surfaces显示文摘LIU Jianhong LV Cunqin JIN Chun GUO Yong WANG Guichang 2016Chemical Research in Chinese Universities2016,32,2:2
9Differential gene expression in porcine SK6 cells infected with wild-type and SAP domain-mutant foot-and-mouth disease virus显示文摘Foot-and-mouth disease virus(FMDV) is the causative agent of a highly contagious disease in livestock. The viral proteinaseL^(rop) of FMDV is involved in pathogenicity, and mutation of theL^(rop) SAP domain reduces FMDV pathogenicity in pigs. To determine the gene expression profiles associated with decreased pathogenicity in porcine cells, we performed transcriptome analysis using next-generation sequencing technology and compared differentially expressed genes in SK6 cells infected with FMDV containingL^(rop) with either a wild-type or mutated version of the SAP domain. This analysis yielded 1,853 genes that exhibited a ≥ 2-fold change in expression and was validated by real-time quantitative PCR detection of several differentially expressed genes. Many of the differentially expressed genes correlated with antiviral responses corresponded to genes associated with transcription factors, immune regulation, cytokine production, inflammatory response, and apoptosis. Alterations in gene expression profiles may be responsible for the variations in pathogenicity observed between the two FMDV variants. Our results provided genes of interest for the further study of antiviral pathways and pathogenic mechanisms related to FMDV L^(rop).Zixin Ni Fan Yang Weijun Cao Xiangle Zhang Ye Jin Ruoqing Mao Xiaoli Du Weiwei Li Jianhong Guo Xiangtao Liu Zixiang Zhu Haixue Zheng 2016Virologica Sinica2016,31,3:1
10A TaqI PCR-RFLP Detecting a Novel SNP in Exon?2 of the Bovine POU1F1 Gene显示文摘Chuanying Pan Xianyong Lan Hong Chen Yikun Guo Jianhong Shu Chuzhao Lei Xinzhuang Wang 2008Biochemical Genetics (-)2008,,7:1
11Non-stoichiometric CoS_(1.097) nanoparticles prepared from CoAl-layered double hydroxide and MOF template as cathode materials for aluminum-ion batteries显示文摘As a main force in the energy evolution,lithium-ion batteries(LIBs)have been extensively studied in recent decades and are widely used in energy storage and portable electronic products as a result of their advantages of high working voltage and long cycle performance.Ruiyuan Zhuang Guo Miao Zengliang Huang Qianqian Zhang Jian-Chun Wu Jianhong Yang 2021Journal of Energy Chemistry2021,30,3:1
12s-Conditionally permutable subgroups of finite groups显示文摘Huang Jianhong Guo Wenbin 2007Chin Ann Math2007,28,1:1
13Glucose-regulated protein 78 may play a crucial role in promoting the pulmonary microvascular remodeling in a rat model of hepatopulmonary syndrome显示文摘Huiying Zhang Minli Lv Zhongfu Zhao Jiantao Jia Lili Zhang Peng Xiao Limin Wang Chen Li Jingquan Ji Xiaoxia Tian Xujiong Li Yimin Fan Lina Lai Yan Liu Baohong Li Cuiying Zhang Mingshe Liu Jianhong Guo Dewu Han Cheng Ji 2014Gene2014,,1:1
14Clinical application of massively parallel sequencing‐based prenatal noninvasive fetal trisomy test for trisomies 21 and 18 in 11 105 pregnancies with mixed risk factors显示文摘Shan Dan Wei Wang Jinghui Ren Yali Li Hua Hu Zhengfeng Xu Tze Kin Lau Jianhong Xie Weihua Zhao Hefeng Huang Jiansheng Xie Luming Sun Xiaohong Zhang Weipeng Wang Shixiu Liao Rong Qiang Jiangxia Cao Qiufang Zhang Yulin Zhou Haiyan Zhu Mei Zhong Yi Guo Linhu 2012Prenat Diagn2012,,13:1
15Transjugular Intrahepatic Portosystemic Shunt for Portal Cavernoma with Symptomatic Portal Hypertension in Non-cirrhotic Patients显示文摘Xingshun Qi Guohong Han Zhanxin Yin Chuangye He Jianhong Wang Wengang Guo Jing Niu Wei Zhang Ming Bai Daiming Fan 2012Digestive Diseases and Sciences2012,,4:1
16Targeting of integrin-linked kinase with a small interfering RNA suppresses progression of experimental proliferative vitreoretinopathy显示文摘Lili Guo Wenzhen Yu Xiaoxin Li Gang Zhao Jianhong Liang Peiying He Kai Wang Peng Zhou Yanrong Jiang Mingwei Zhao 2008Experimental Eye Research2008,,6:1
17Microwave sintering W- Cu composites: analyses of densification and microstructural homogenization 显示文摘Luo Shudong Yi Jianhong Guo Yingli 2009Journal of Alloys and Compounds2009,473,:1
18Decomposition of methylamine on Mo(100) surface: A DFT study显示文摘The initial decomposition of methylamine on Mo(100) surface has been investigated by self-consistent (GGA-PW91) density functional theory combined with periodic slab model. The adsorption energies of possible species and the activation energies for possible elementary reactions involved are obtained in the present work. Our results indicate that the barriers decreased with the order of C-N>N-H>C-H. In addition, metastable adsorption of the abstracted hydrogen atom on the hollow site in the final state is also considered for the N-H and C-H bond breaking. For the C-H bond cleavage, the reaction barrier that the abstracted hydrogen located on the hollow site in the final state is lower than that on the bridge site. However, for the N H bond breaking, the barriers are alike for the abstracted hydrogen on both hollow and bridge sites in the final state.Jianhong Liu Cunqin Lü Dongli Du Yong Guo 2012Journal of Natural Gas Chemistry2012,21,2:1
19Sulfur poisoning resistant mesoporous Mn-base catalyst for low-temperature SCR of NO with NH3显示文摘Yu Jian Guo Feng Wang Yingli Zhu Jianhong Liu Yunyi Su Fabing Gao Shiqiu Guangwen Xu 0,,:1
20Glucose-regulated protein 78 may play a crucial role in promoting the pulmonary microvascular remodeling in a rat model of hepatopulmonary syndrome显示文摘Huiying Zhang Minli Lv Zhongfu Zhao Jiantao Jia Lili Zhang Peng Xiao Limin Wang Chen Li Jingquan Ji Xiaoxia Tian Xujiong Li Yimin Fan Lina Lai Yan Liu Baohong Li Cuiying Zhang Mingshe Liu Jianhong Guo Dewu Han Cheng Ji 2014Gene2014,,1:1
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