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| 1 | Mapping wetland changes in China between 1978 and 2008显示文摘Four wetland maps for all China have been produced,based on Landsat and CBERS-02B remote sensing data between 1978 and 2008 (1978,1990,2000 and 2008).These maps were mainly developed by manual interpretation and validated by substantial field investigation in 2009.Based on these maps,we analyzed the 2008 wetland distribution in China and discussed wetland changes and their drivers over the past 30 years.(i) There were about 324097 km 2 of wetlands in 2008,for which inland marshes or swamps were the most common wetland type (35%),with lakes (26%) second.Most of the wetlands were in Heilongjiang,Inner Mongolia,Qinghai and Tibet,occupying about 55% of the national wetland area.(ii) From 1978 to 2008,China's wetland area continually and significantly decreased,by about 33% based on changes in the wetland map.This was in sharp contrast to the increase in artificial wetlands,which increased by about 122%.Inland marshes accounted for the main loss of total wetlands from 1978 to 2000.From 2000 through 2008,riverine and lacustrine wetlands constituted the main wetland loss.Fortunately however,the rate of wetland loss decreased from 5523 to 831 km 2 /a.(iii) The change ratio of lost natural wetlands (including inland and coastal wetlands) to non-wetlands has decreased slightly over the past 30 years.From 1978 to 1990,nearly all natural wetlands (98%) lost were transformed into non-wetlands.However,the ratio declined to 86% from 1990 to 2000,and to 77% from 2000 to 2008.(iv) All Chinese provinces were divided into three groups according to patterns of wetland changes,which could relate to the driving forces of such changes.Tibet was completely different from other provinces,as it was one representative example in which there was a net wetland increase,because of global warming and decreased human activity since 1990.Increased economic development caused considerable wetland loss in most eastern provinces,and artificial wetlands increased. | NIU ZhenGuo ZHANG HaiYing WANG XianWei YAO WenBo ZHOU DeMin ZHAO KuiYi ZHAO Hui LI NaNa HUANG HuaBing LI CongCong YANG Jun LIU CaiXia LIU Shuang WANG Lin LI Zhan YANG ZhenZhong QIAO Fei ZHENG YaoMin CHEN YanLei SHENG YongWei GAO XiaoHong ZHU WeiHong WANG WenQing WANG Hong WENG YongLing ZHUANG DaFang LIU JiYuan LUO ZhiCai CHENG Xiao GUO ZiQi GONG Peng | 2012 | Chinese Science Bulletin2012，57，22： | 51 |
| 2 | Etiological and clinical analysis of osteonecrosis of the femoral head in Chinese patients显示文摘 | WANG Xing-shan ZHUANG Qian-yu WENG Xi-sheng LIN Jin JIN Jin QIAN Wen-wei | 2013 | Chinese Medical Journal2013，，2： | 52 |
| 3 | A randomized controlled clinical trial on the treatment of Thymosin-a1 versus interferon-α in patients with hepatitis B显示文摘INTRODUCTIONChronic hepatitis B virus (HBV) infection is a serious problem because of its world wide distribution and possible adverse sequelae ,such as cirrhosis and hepatocellular carcinoma .The World Health Organization estimates that HBV has infected mord than 350 million people worldwide ,and up to 20% of them will become chromic carricrs and will be at significant risk for cirrhosis and HCC .The ultimate goal of the therapy for chronic hepatitis B is to prevent progression to cirrhosis and to prevent development of HCC. | Jing You Lin Zhuang Bao Zhang Tang Wei Bo Yang Su Ying Ding Wu Li Rong Xue Wu Hong Li Zhang Yan Mei Zhang Shao Ming Yan Lu Zhang ~1Department of Infectious Diseases,The First Affiliated Hospital of Kunming Medical College,Kunming 650032,Yunnan Province,China ~2Departrnent of Hepatology,Kunming Third Municipal People’s Hospital,Kunming 650041,Yunnan Province,China | 2001 | World Journal of Gastroenterology2001，7，3： | 48 |
| 4 | Mortality and Morbidity of Extremely Low Birth Weight Infants in the Mainland of China: A Multi-center Study显示文摘 | Hui-Jia Lin Li-Zhong Du Xiao-Lu Ma Li-Ping Shi Jia-Hua Pan Xiao-Mei Tong Qiu-Ping Li Jian-Guo Zhou Bing Yi Ling Liu Yun-Bing Chen Qiu-Fen Wei Hui-Qing Wu Mei Li Cui-Qing Li Xi-Rong Gao Shi-Wen Xia Wen-Bin Li Chao-Ying Ya Ling He Kun Liang Xiao-Yu Zhou Shu-Ping Han Qin Lyu Yin-Ping Qiu Wen Li Dong-Mei Chen Hong-Ru Lu Xiao-Hong Liu Hong Liu Zhen-Lang Lin Li Liu Jia-Jun Zhu Hong Xiong Shao-Jie Yue Si-Qi Zhuang | 2015 | Chinese Medical Journal2015，，20： | 49 |
| 5 | Peripheral T-lymphocyte subpopulations in different clinical stages of chronic HBV infection correlate with HBV load显示文摘AIM: To characterize the peripheral T-cell subpopulation profiles and their correlation with hepatitis B virus (HBV) replication in different clinical stages of chronic HBV infection.METHODS: A total of 422 patients with chronic HBV infection were enrolled in this study. The patients were divided into three stages: immune-tolerant stage, immune active stage, and immune-inactive carrier stage. Composition of peripheral T-cell subpopulations was determined by flow cytometry. HBV markers were detected by enzyme-linked immunosorbent assay. SerumHBV DNA load was assessed by quantitative real-time polymerase chain reaction.RESULTS: CD8+ T-cells were significantly higher in patients at the immune-tolerant stage than in patients at the immune-active and -inactive carrier stages (36.87 ± 7.58 vs 34.37 ± 9.07, 36.87 ± 7.58 vs 28.09 ± 5.64, P < 0.001). The peripheral blood in patients at the immune-tolerant and immune active stages contained more CD8+ T-cells than CD4+ T-cells (36.87 ± 7.58 vs 30.23 ± 6.35, 34.37 ± 9.07 vs 30.92 ± 7.40, P < 0.01), whereas the peripheral blood in patients at the immune-inactive carrier stage and in normal controls contained less CD8+ T-cells than CD4+ T-cells (28.09 ± 5.64 vs 36.85 ± 6.06, 24.02 ± 4.35 vs 38.94 ± 3.39, P < 0.01). ANOVA linear trend test showed that CD8+ T-cells were signif icantly increased in patients with a high viral load (39.41 ± 7.36, 33.83 ± 7.50, 31.81 ± 5.95 and 26.89 ± 5.71, P < 0.001), while CD4+ T-cells were signif icantly increased in patients with a low HBV DNA load (37.45 ± 6.14, 33.33 ± 5.61, 31.58 ± 6.99 and 27.56 ± 5.49, P < 0.001). Multiple regression analysis displayed that log copies of HBV DNA still maintained its highly signif icant coefficients for T-cell subpopulations, and was the strongest predictors for variations in CD3+, CD4+ and CD8+ cells and CD4+/CD8+ ratio after adjustment for age at HBV-infection, maternal HBV-infection status, presence of hepatitis B e antigen and HBV mutation.CONCLUSION: Differences in peripheral T-cell subpopulation profi les can be found in different clinical stages of chronic HBV infection. T-cell impairment is signifi cantly associated with HBV load. | Jing You Lin Zhuang Yi-Feng Zhang Hong-Ying Chen Hutcha Sriplung Alan Geater Virasakdi Chongsuvivatwong Teerha Piratvisuth Edward McNeil Lan Yu Bao-Zhang Tang .lun-Hua Huang | 2009 | World Journal of Gastroenterology2009，15，27： | 39 |
| 6 | Prevalence and evolution of drug resistance HIV-1 variants in Henan, China显示文摘To understand the prevalence and evolution of drug resistant HIV strains in Henan China after the implementation of free antiretroviral therapy for AIDS patients. 45 drug nave AIDS patients, 118 AIDS patients who received three months antiretroviral therapy and 124 AIDS patients who received six months antiretroviral treatment were recruited in the southern part of Henan province. Information on general condition, antiretroviral medicines, adherence and clinical syndromes were collected by face to face interview. Meanwhile, 14ml EDTA anticoagulant blood was drawn. CD4/CD8 T cell count, viral load and genotypic drug resistance were tested. The rates of clinical improvement were 55.1% and 50.8% respectively three months and six months after antiretroviral therapy. The mean CD4 cell count after antiretroviral therapy was significantly higher than in drug nave patients. The prevalence rate of drug resistant HIV strains were 13. 9%, 45.4% and 62.7% in drug nave patients, three month treatment patients and six month treatment patients, respectively. The number of resistance mutation codons and the frequency of mutations increased significantly with continued antiretroviral therapy. The mutation sites were primarily at the 103, 106 and 215 codons in the three-month treatment group and they increased to 15 codon mutations in the six-month treatment group. From this result, the evolution of drug resistant strains was inferred to begin with the high level NNRTI resistant strain, and then develop low level resistant strains to NRTIs. The HIV strains with high level resistance to NVP and low level resistance to AZT and DDI were highly prevalent because of the AZT+DDI+NVP combination therapy. These HIV strains were also cross resistant to DLV, EFV, DDC and D4T. Poor adherence to therapy was believed to be the main reason for the emergence and prevalence of drug resistant HIV strains. The prevalence of drug resistant HIV strains was increased with the continu- ation of antiretroviral therapy in the southern part of Henan province. Measures, that could promote high level adherence, provide new drugs and change ART regimens in failing patients, should be implemented as soon as possible. | Jing Yun LI Han Ping LI Lin LI Hong LI Zhe WANG Kun YANG Zuo Yi BAO Dao Min ZHUANG Si Yang LIU Yong Jian LIU Hui XING Yi Ming SHAO | 2005 | Cell Research2005，15，11： | 34 |
| 7 | Effect of viral load on T-lymphocyte failure in patients with chronic hepatitis B显示文摘AIM: To investigate peripheral T-lymphocyte sub-population profile and its correlation with hepatitis B virus (HBV) replication in patients with chronic hepatitis B (CHB).METHODS: Distribution of T-lymphocyte subpopulations in peripheral blood was measured by flow cytometry in 206 CHB patients. HBV markers were detected with ELISA. Serum HBV DNA load was assessed with quantitative real-time polymerase chain reaction (PCR). The relationship between HBV replication and variation in peripheral T-cell subsets was analyzed.RESULTS: CHB patients had significantly decreased CD3+ and CD4+ cells and CD4+/CD8+ ratio, and increased CD8+ cells compared with uninfected controls (55.44 ± 12.39 vs 71.07 ± 4.76, 30.92 ± 7.48 vs 38.94 ± 3.39, 1.01 ± 0.49 vs 1.67 ± 0.33, and 34.39 ± 9.22 vs 24.02 ± 4.35; P < 0.001, respectively). Univariate analysis showed a similar pattern of these parameters was significantly associated with high viral load, presence of serum hepatitis B e antigen (HBeAg) expression, liver disease severity, history of maternal HBV infection, and young age at HBV infection, all with P < 0.01. There was a significant linear relationship between viral load and these parameters of T-lymphocyte subpopulations (linear trend test P < 0.001). There was a negative correlation between the levels of CD3+ and CD4+ cells and CD4+/CD8+ ratio and serum level of viral load in CHB patients (r = -0.68, -0.65 and -0.75, all P < 0.0001), and a positive correlation between CD8+ cells and viral load (r = 0.70, P < 0.0001). There was a significant decreasing trend in CD3+ and CD4+ cells and CD4+/CD8+ ratio with increasing severity of hepatocyte damage and decreasing age at HBV infection (linear trend test P < 0.01). In multiple regression (after adjustment for age at HBV infection, maternal HBV infection status and hepatocyte damage severity) log copies of HBV DNA maintained a highly significant predictive coefficient on T-lymphocyte subpopulations, and was the strongest predictor of variation in CD3+, CD4+, CD8+ cells and CD4+/CD8+ ratio. However, the effect of HBeAg was not significant.CONCLUSION: T-lymphocyte failure was signifi-cantly associated with viral replication level. The substantial linear dose-response relationship and strong independent predictive effect of viral load on T-lymphocyte subpopulations suggests the possibility of a causal relationship between them, and indicates the importance of viral load in the pathogenesis of T cell hyporesponsiveness in these patients. | Jing You Hutcha Sriplung Alan Geater Virasakdi Chongsuvivatwong Lin Zhuang Hong-Ying Chen Lan Yu Bao-Zhang Tang Jun-Hua Huang | 2008 | World Journal of Gastroenterology2008，14，7： | 30 |
| 8 | Research of Helicobacter pylori infection in precancerous gastric lesions显示文摘INTRODUCTION Helicobacter pylori(Hp)infection has beenconsidered to play significant roles in pathogenesisof peptic ulcer.Additionally Hp is associated withthe development of gastric epithelial hyperplasiaand lymphoid malignancies.The InternationalAgency for Research on Cancer has classified lip asa class Ⅰ carcinogen and a definite cause of gastriccancer in humans.Hp infection first causes chronicactive gastritis and may slowly lead to infection ofwhole stomach.In the late stages of infection,mucosal atrophy and intestinal metaplasia(IM), | Xiao Qiang Zhuang San Ren Lin | 2000 | World Journal of Gastroenterology2000，6，3： | 24 |
| 9 | Postoperative Stimulated Thyroglobulin Level and Recurrence Risk Stratification in Differentiated Thyroid Cancer显示文摘 | Xue Yang Jun Liang Tian-Jun Li Ke Yang Dong-Quan Liang Zhuang Yu Yan-Song Lin | 2015 | Chinese Medical Journal2015，，8： | 24 |
| 10 | Preliminary results of Thymosin-a1 versus interferon-α treatment in patients with HBeAg negative and serum HBV DNA positive chronic hepatitis B显示文摘INTRODUCTIONIn China ,the incidence and mortality of gastric cancer rank the second among all cancers. Recent development of cancer [1-20].The aim of this study was investigat the insight of apoptosis and bcl-2, p53 and C-myc protein expression in the development of gastric cancer . | Lin Zhuang Jing You Bao Zhang Tang Su Ying Ding Kui Hua Yan Dan Peng Yan Mei Zhang Lu Zhang ~1Department of Hepatology,Kunming Third Municipal Peoples Hospital,Kunming 650041,Yunnan Province,China ~2Department of Infectious Diseases,The First Affiliated Hospital of Kunming Medical College,Kunming 650032,Yunnan Province,China | 2001 | World Journal of Gastroenterology2001，7，3： | 22 |
| 11 | Single whispering-gallery mode lasing in polymer bottle microresonators via spatial pump engineering显示文摘Single-mode lasing in whispering-gallery mode(WGM)microresonators is challenging to achieve.In bottle microresonators,the highly non-degenerated WGMs are spatially well-separated along the long-axis direction and provide mode-selection capability.In this work,by engineering the pump intensity to modify the spatial gain profiles of bottle microresonators,we demonstrate a simple and general approach to realizing single-mode WGM lasing in polymer bottle microresonators.The pump intensity is engineered into an interference distribution on the bottle microresonator surface.By tuning the spacing between axial positions of the interference pump patterns,the mode intensity profiles of single-bottle WGMs can be spatially overlapped with the interference stripes,intrinsically enabling single-mode lasing and selection.Attractive advantages of the system,including high sidemode suppression factors 420 dB,large spectral tunability 48 nm,low-lasing threshold and reversible control,are presented.Our demonstrated approach may have a variety of promising applications,ranging from tunable single-mode lasing and sensing to nonlinear optics. | Fuxing Gu Fuming Xie Xing Lin Shuangyi Linghu Wei Fang Heping Zeng Limin Tong Songlin Zhuang | 2017 | Light(Science & Applications)2017，6，1： | 17 |
| 12 | Selective Ferroptosis Inhibitor Liproxstatin-1 Attenuates Neurological Deficits and Neuroinflammation After Subarachnoid Hemorrhage显示文摘Ferroptosis is a form of iron-dependent regulated cell death.Evidence of its existence and the effects of its inhibitors on subarachnoid hemorrhage(SAH)is still lacking.In the present study,we found that liproxstatin-1 protected HT22 cells against hemin-induced injury by protecting mitochondrial functions and ameliorating lipid peroxidation.In in vivo experiments,we demonstrated the presence of characteristic shrunken mitochondria in ipsilateral cortical neurons after SAH.Moreover,liproxstatin-1 attenuated the neurological deficits and brain edema,reduced neuronal cell death,and restored the redox equilibrium after SAH.The inhibition of ferroptosis by liproxstatin-1 was associated with the preservation of glutathione peroxidase 4 and the downregulation of acylCoA synthetase long-chain family member 4 as well as cyclooxygenase 2.In addition,liproxstatin-1 decreased the activation of microglia and the release of IL-6,IL-1 b,and TNF-a.These data enhance our understanding of cell death after SAH and shed light on future preclinical studies. | Yang Cao Yin Li Chao He Feng Yan Jian-Ru Li Hang-Zhe Xu Jian-Feng Zhuang Hang Zhou Yu-Cong Peng Xiong-Jie Fu Xiao-Yang Lu Yuan Yao Yu-Yu Wei Yun Tong Yi-Fu Zhou Lin Wang | 2021 | Neuroscience Bulletin2021，37，4： | 16 |
| 13 | A remote control training system for rat navigation in complicated environment显示文摘A remote control system has been developed to deliver stimuli into the rat brain through a wireless micro-stimulator for animal behavior training. The system consists of the following main components: an integrated PC control program, a trans-mitter and a receiver based on Bluetooth (BT) modules, a stimulator controlled by C8051 microprocessor, as well as an operant chamber and an eight-arm radial maze. The micro-stimulator is featured with its changeable amplitude of pulse output for both constant-voltage and constant-current mode, which provides an easy way to set the proper suitable stimulation intensity for dif-ferent training. The system has been used in behavior experiments for monitoring and recording bar-pressing in the operant chamber, controlling rat roaming in the eight-arm maze, as well as navigating rats through a 3D obstacle route. The results indi-cated that the system worked stably and that the stimulation was effective for different types of rat behavior controls. In addition, the results showed that stimulation in the whisker barrel region of rat primary somatosensory cortex (SI) acted like a cue. The animals can be trained to take different desired turns upon the association between the SI cue stimulation and the reward stimu-lation in the medial forebrain bundle (MFB). | FENG Zhou-yan CHEN Wei-dong YE Xue-song ZHANG Shao-min ZHENG Xiao-jing WANG Peng JIANG Jun JIN Lin XU Zhi-jian LIU Chun-qing LIU Fu-xin LUO Jian-hong ZHUANG Yue-ting ZHENG Xiao-xiang | 2007 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2007，8，2： | 14 |
| 14 | I-IBV life cycle is restricted in mouse hepatocytes .~xpressing human NTCP显示文摘 | Hanjie Li Qiuyu Zhuang Yuze Wang Tianyi'ng Zhang Jinghua Zhao Yali Zhang Junfang Zhang Yi Lin Quan Yuan Ningshao Xia Jiahuai Han | 2014 | Cellular & Molecular Immunology2014，11，2： | 14 |
| 15 | High HIV incidence epidemic among men who have sex with men in china: results from a multi-site cross-sectional study显示文摘Background:Recent upsurge of new HIV infections among men who have sex with men(MSM)is a major concern in China.Paucity of national-level information regarding the burden and predictors of this progressive epidemic of new infections called for a multi-centric,timely and comprehensive investigation.Methods:Mixed methods were used to recruit MSM from seven cities in China between 2012 and 2013.Recent and established HIV infections were estimated by Western Blot and BED HIV-1 capture enzyme immunoassay.Syphilis and herpes simplex virus-2(HSV-2)were also tested.Results:A total of 4496 eligible MSM were recruited.The majority was aged≤35 years(77.5%),migrants(60.3%),never married(69.8%),and played receptive role in anal sex(70.5%).The HIV prevalence was 9.9%,and 41.9%were recently infected,with sensitivity/specificity adjusted HIV incidence of 8.9(95%CI:7.6-10.2)/100 Person-Years.The prevalence of history HSV-2 and syphilis were 12.5%and 8.5%,respectively.Recent HIV infection was associated with having multiple male partners(aOR=1.4,95%CI 1.1-1.9),recreational drug use(aOR=2.2,95%CI 1.6-3.0),anal bleeding(aOR=2.1,95%CI 1.4-3.0),syphilis infection(aOR=2.8,95%CI 1.9-4.3)and history HSV-2 infection(aOR=2.3,95%CI 1.5-3.3).Conclusion:High rate of recent HIV infection is potentially resulting in progressive deterioration of the overall HIV epidemic among MSM in China.Targeted interventions to address high-risk MSM including those having multiple partners,history of recreational drug use and syphilis or HSV-2 infection seemed to be the need of the hour. | Jun-Jie Xu Wei-Ming Tang Hua-Chun Zou Tanmay Mahapatra Qing-Hai Hu Geng-Feng Fu Zhe Wang Lin Lu Ming-Hua Zhuang Xi Chen Ji-Hua Fu Yan-Qiu Yu Jin-Xin Lu Yong-Jun Jiang Wen-Qing Geng Xiao-Xu Han Hong Shang | 2016 | Infectious Diseases of Poverty2016，5，1： | 14 |
| 16 | TALEN-based generation of a cynomolgus monkey disease model for human microcephaly显示文摘基因在非人类的首领编辑可以为在人探索病原学和遗传上基于的神经病学的混乱的治疗学的策略导致珍贵模型。然而,仔细在人模仿病理学、行为的赤字的神经病学的混乱的一个猴子模型成功地还没被产生了。Microcephalin 1 (MCPH1 ) 在人的大脑,和智力迟钝伴随的 MCPH1 变化原因头小畸型的进化被含有。这里,我们产生了用抄写带 biallelic MCPH1 变化的一只 cynomolgus 猴子(Macaca fascicularis ) 像使活跃之物的受动器核酸酶。猴子概括了大多数在病人观察的重要临床的特征,包括在头圆周,早熟的染色体冷凝作用(PCC ) ,语料库 callosum 的发育不全和上面的手足 spasticity 的显著减小。而且,在变异的真皮的成纤维细胞的 MCPH1 的 overexpression 救了 PCC 症候群。这个猴子模型可以帮助我们阐明在人的头小畸型并且更好的致病的 MCPH1 的角色在首领大脑尺寸的进化理解这蛋白质的功能。 | Qiong Ke Weiqiang Li Xingqiang Lai Hong Chen Lihua Huang Zhuang Kang Kai Li Jie Ren Xiaofeng Lin Haiqing Zheng Weijun Huang Yunhan Ma Dongdong Xu Zheng Chen Xinming Song Xinyi Lin Min Zhuang Tao Wang Fengfeng Zhuang Jianzhong Xi Frank Fuxiang Mao Huimin Xia Bruce T Lahn Qi Zhou Shihua Yang Andy Peng Xiang | 2016 | Cell Research2016，26，9： | 13 |
| 17 | Acupuncture treatment of lung-spleen Qi deficiency in stable chronic obstructive pulmonary disease: a randomized, open-label, controlled trial显示文摘OBJECTIVE:To evaluate the effectiveness and safety of acupuncture that reinforces the spleen to strengthen the lung in patients with stable chronic obstructive pulmonary disease(COPD).METHODS:This was a randomized,open-controlled trial in which the acupuncturist and the participants were not blinded,but the outcome evalu-ators and data analysts were blinded.One-hundred-and-two patients with stable COPD were randomly divided into two groups in a 1∶1 ratio.The acupuncture group received 30-minute sessions of acupuncture therapy at the same acupoints three times weekly for 6 weeks in addition to routine conventional Western Medicine treatment;the control group received routine conventional Western Medicine treatment alone.The primary outcome was the Borg scale score,which was assessed immediately after the 6-minute walk test.The secondary outcomes were the 6-minute walk distance,lung function,and oxygen saturation.Measurements were obtained at baseline and after 6 weeks of treatment.RESULTS:After 6 weeks of treatment,the Borg scale score in the acupuncture group was significantly better than that in the control group(2.02±0.71 versus 5.01±0.34,P<0.05).Furthermore,the post-treatment improvements in the 6-minute walk distance,lung function,and oxygen saturation were significantly greater in the acupuncture group than in the control group,showing that the acupuncture group had better exercise tolerance.CONCLUSION:The findings suggest that acupuncture that aims to reinforce the spleen to strengthen the lung is a safe and effective adjuvant therapy that effectively improves the exercise capacity of patients with stable COPD. | Li Yu Xiong Chan Zeng Yan Wei Hua Zhuang Guangtong Zhao Lihong Li Chenyi Li Lin Qin Erqi Chen Xiaoqin Fu Juanjuan | 2019 | Journal of Traditional Chinese Medicine2019，39，6： | 13 |
| 18 | Optimization of beamforming and path planning for UAV-assisted wireless relay networks显示文摘Recently, unmanned aerial vehicles(UAVs) acting as relay platforms have attracted considerable attention due to the advantages of extending coverage and improving connectivity for long-range communications. Specifically, in the scenario where the access point(AP) is mobile, a UAV needs to find an efficient path to guarantee the connectivity of the relay link. Motivated by this fact, this paper proposes an optimal design for beamforming(BF) and UAV path planning. First of all, we study a dual-hop amplify-and-forward(AF) wireless relay network, in which a UAV is used as relay between a mobile AP and a fixed base station(BS). In the network, both of the AP and the BS are equipped with multiple antennas, whereas the UAV has a single antenna. Then, we obtain the output signal-to-noise ratio(SNR) of the dual-hop relay network. Based on the criterion of maximizing the output SNR, we develop an optimal design to obtain the solution of the optimal BF weight vector and the UAV heading angle. Next, we derive the closed-form outage probability(OP) expression to investigate the performance of the dual-hop relay network conveniently. Finally, computer simulations show that the proposed approach can obtain nearly optimal flying path and OP performance, indicating the effectiveness of the proposed algorithm. Furthermore, we find that increasing the antenna number at the BS or the maximal heading angle can significantly improve the performance of the considered relay network. | Ouyang Jian Zhuang Yi Lin Min Liu Jia | 2014 | Chinese Journal of Aeronautics2014，27，2： | 12 |
| 19 | Serum N-glycan markers for diagnosing liver fibrosis induced by hepatitis B virus显示文摘BACKGROUND Hepatitis B virus (HBV) infection is the primary cause of hepatitis with chronic HBV infection,which may develop into liver fibrosis,cirrhosis and hepatocellular carcinoma.Detection of early-stage fibrosis related to HBV infection is of great clinical significance to block the progression of liver lesion.Direct liver biopsy is regarded as the gold standard to detect and assess fibrosis;however,this method is invasive and prone to clinical sampling error.In order to address these issues,we attempted to find more convenient and effective serum markers for detecting HBV-induced early-stage liver fibrosis.AIM To investigate serum N-glycan profiling related to HBV-induced liver fibrosis and verify multiparameter diagnostic models related to serum N-glycan changes.METHODS N-glycan profiles from the sera of 432 HBV-infected patients with liver fibrosis were analyzed.Significant changed N-glycan levels (peaks)(P <0.05) in differentfibrosis stages were selected in the modeling group,and multiparameter diagnostic models were established based on changed N-glycan levels by logistic regression analysis.The receiver operating characteristic (ROC) curve analysis was performed to evaluate diagnostic efficacy of N-glycans models.These models were then compared with the aspartate aminotransferase to platelet ratio index (APRI),fibrosis index based on the four factors (FIB-4),glutamyltranspeptidase platelet albumin index (S index),GlycoCirrho-test,and GlycoFibro-test.Furthermore,we combined multiparameter diagnostic models with alanine aminotransferase (ALT) and platelet (PLT) tests and compared their diagnostic power.In addition,the diagnostic accuracy of N-glycan models was also verified in the validation group of patients.RESULTS Multiparameter diagnostic models constructed based on N-glycan peak 1,3,4and 8 could distinguish between different stages of liver fibrosis.The area under ROC curves (AUROCs) of Model A and Model B were 0.890 and 0.752,respectively differentiating fibrosis F0-F1 from F2-F4,and F0-F2 from F3-F4,and surpassing other serum panels.However,AUROC (0.747) in Model C used for the diagnosis of F4 from F0-F3 was lower than AUROC (0.795) in FIB-4.In combination with ALT and PLT,the multiparameter models showed better diagnostic power (AUROC=0.912,0.829,0.885,respectively) when compared with other models.In the validation group,the AUROCs of the three combined models (0.929,0.858,and 0.867,respectively) were still satisfactory.We also applied the combined models to distinguish adjacent fibrosis stages of 432patients (F0-F1/F2/F3/F4),and the AUROCs were 0.917,0.720 and 0.785.CONCLUSION Multiparameter models based on serum N-glycans are effective supplementary markers to distinguish between adjacent fibrosis stages of patients caused by HBV,especially in combination with ALT and PLT. | Xi Cao Qing-Hua Shang Xiao-Ling Chi Wei Zhang Huan-Ming Xiao Mi-Mi Sun Gang Chen Yong An Chun-Lei Lv Lin Wang Yue-Min Nan Cui-Ying Chen Zong-Nan Tan Xue-En Liu Hui Zhuang | 2020 | World Journal of Gastroenterology2020，26，10： | 12 |
| 20 | Sisyphus effects in hydrogen electrochemistry on metal silicides enabled by silicene subunit edge显示文摘Nonmetal elements strictly govern the electrochemical performance of molybdenum compounds.Yet,the exact role played by nonmetals during electrocatalysis remains largely obscure.With intermetallic MoSi_2comprising silicene subunits,we present an unprecedented hydrogen evolution reaction(HER)behavior in aqueous alkaline solution.Under continuous operation,the HER activity of MoSi_2shows a more than one order of magnitude improvement in current density from 1.1 to 21.5 mA cm^(à2)at 0.4 V overpotential.Meanwhile,this activation behavior is highly reversible,such that voltage withdrawal leads to catalyst inactivation but another operation causes reactivation.Thus,the system shows dynamics strikingly analogous to the legendary Sisyphus’labor,which drops and recovers in a stepwise manner repeatedly,but never succeeds in reaching the top of the mountain.Isomorphic WSi_2behaves almost the same as MoSi_2,whereas other metal silicides with silicyne subunits,including CrSi_2and TaSi_2,do not exhibit any anomalous behavior.A thin amorphous shell of MoSi_2is observed after reaction,within which the Si remains partially oxidized while the oxidation state of Mo is basically unchanged.First-principles calculations further reveal that the adsorption of hydroxide ions on silicene subunit edges and the subsequent Si vacancy formation in MoSi_2jointly lead to the anomalous HER kinetics of the adjacent Mo active centers.This work demonstrates that the role of nonmetal varies dramatically with the electronic and crystallographic structures of silicides and that silicene structural subunit may serve as a promoter for boosting HER in alkaline media. | Zechao Zhuang Yong Li Jiazhao Huang Zilan Li Kangning Zhao Yunlong Zhao Lin Xu Liang Zhou Lyudmila V. Moskaleva Liqiang Mai | 2019 | Science Bulletin2019，64，9： | 12 |
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