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13篇 您的检索式:作者名="Changbing LIU"
    题名 作者 年代 出处 被引量
1Identification and Typing of Respiratory Adenoviruses in Guangzhou, Southern China Using a Rapid and Simple Method显示文摘Human adenoviruses (HAdVs), especially HAdV-B3, -E4 and -B7, are associated with Acute Respiratory Disease in Chinese children, and occasionally in adults. In order to establish and document the profiles of the respiratory adenovirus pathogen among children in Guangzhou, Southern China, a rapid, simple and practical method for identification and typing of respiratory adenoviruses was developed and evaluated. One pair of universal PCR primers was designed according to the conserved region of the hexon gene, which can detect not only HAdV-B3, -E4 and -B7, but also HAdV-B14, -F40 and -F41, with a specific 300bp PCR product. Three pairs of type-specific PCR primers were also designed according to the hypervariable regions of the hexon gene to type HAdV-B3, -E4 and -B7 by three independent PCR reactions, making it easy to optimize the PCR conditions. By using this method, one hundred throat swab specimens collected during Oct 2010 to Dec 2011 and suspected of being positive for adenoviral infection were identified and typed for adenoviruses. Of these samples, fifty-five were adenovirus-positive. The most common HAdV type was HAdV-B3, identified in 92.7% of samples, which is not only consistent with the data reported in 2004-2006, but also consistent with the recent report in Hangzhou, eastern China, indicating that HAdV-B3 has been circulating in Guangzhou, and maybe in eastern China, for many years. The method for the respiratory adenovirus identification and typing we developed is rapid, simple and practical, which has a potential in the real-time surveillance of circulating adenovirus strains and also to provide etiological evidence for the adenovirus-relative disease control and prevention in China.Guiyuan Han Hongling Niu Suhui Zhao Bing Zhu Changbing Wang Yungang Liu Mingjie Zhang Shu Yang Feitong Liu Chengsong Wan Qiwei Zhang 2013Virologica Sinica2013,28,2:10
2Changes of main secondary metabolites in leaves of Ginkgo biloba in response to ozone fumigation显示文摘To investigate the effect of elevated O3 on the accumulation of main secondary metabolites in leaves of Ginkgo biloba L.,four-year-old trees were exposed in open-top chambers with ambient air and the air with twice ambient O3 concentration in Shenyang in 2006.Elevated O3 increased the concentrations of terpenes,but decreased the concentrations of phenolics in G.biloba leaves.The results showed that secondary compounds from G.biloba leaves responded to the elevated O3 exposure in a different way when compared to previous studies which showed elevated O3 increased the concentrations of phenolics but had no effect on the terpenes in leaves of other deciduous trees.Furthermore,reduced synthesis of phenolics may decrease the resistance of G.biloba to O3 and other environmental factors.On the other hand,the induced synthesis of terpenes may enhance the antioxidant abilities in G.biloba leaves at the end of O3 fumigation.HE Xingyuan HUANG Wei CHEN Wei DONG Tian LIU Changbing CHEN Zhenju XU Sheng RUAN Yanan 2009Journal of Environmental Sciences2009,21,2:8
3Seroprevalence of Neutralizing Antibodies against Six Human Adenovirus Types Indicates the Low Level of Herd Immunity in Young Children from Guangzhou, China显示文摘Human adenoviruses(HAdVs) commonly cause many diseases such as respiratory diseases, gastroenteritis, cystitis worldwide. HAdV-3,-7,-4 and emergent HAdV-55 and HAdV-14 are the most important types causing severe respiratory diseases. There is no effective drug available for clinical treatment, and no vaccine available for the general population.Therefore, it is important to investigate the seroprevalence against HAdV for developing novel vaccines and vectors. In this study, we investigated the seroprevalence and titer levels of neutralizing antibodies(NAb) against HAdV-3,-4,-7,-14,-55,and-11 in total 278 healthy populations between 0 months and 49 years of age(228 children and 50 adults) from Guangzhou. In children under the age of 18 years, the seropositive rates were significantly increased against HAdV-3 at12.07%, 33.96%, and 64.29% and against HAdV-7 at 0%, 18.87%, and 19.05% in age groups of 1–2, 3–5, and 6–17 years,respectively. The seroprevalence was very low(0% - 8.1%) for all other four types. In adults aged between 18 and49 years, HAdV-3,-4, and-7(> 50.00%) were the most common types, followed by HAdV-14(38.00%),-55(34.00%),and-11(24.00%). Adults tended to have high NAb titers against HAdV-4 and-55. HAdV-55-seropositive donors tended to be HAdV-11-and HAdV-14-seropositive. These results indicated the low level of herd immunity against all six HAdV types in young children, and HAdV-14,-55,-11 in adults from Guangzhou City. Our findings demonstrate the importance of monitoring HAdV types and developing vaccines against HAdV for children and adults.Xingui Tian Ye Fan Changbing Wang Zhenwei Liu Wenkuan Liu Yun Xu Chuncong Mo Aiping You Xiao Li Xia Rong Rong Zhou 2021Virologica Sinica2021,36,3:5
4Numerical study on explosion-induced fractures of reinforced concrete structure by beam-particle model显示文摘In the field of disaster prevention mitigation and protection engineering,it is important to identify the mechanical behaviors of reinforced concrete(RC)under explosive load by simulation.A three dimensional beam-particle model(BPM),which is suitable to simulate the fracture process of RC under explosive load,has been developed in the frame of discrete element method (DEM).In this model,only the elastic deformations of beams between concrete particles were considered.The matrix displacement method(MDM)was employed to describe the relationship between the deformation and forces of the beam.A fracture criterion expressed by stress was suggested to identify the state of the beam.A BPM for steel bar,which can simulate the deformation of steel bar under high loading rate,was also developed based on the Cowper-Symonds theory.A program has been coded using C++language.Experiments of RC slab under explosive load were carried out using the program.Good agreement was achieved between the experimental and simulated results.It is indicated that the proposed theoretical model can well simulate the fracture characteristics of RC slab under explosive load such as blasting pit formation,cracks extension, spallation formation,etc.LIU Jun ZHAO ChangBing YUN Bin 2011Science China(Technological Sciences)2011,54,2:3
5Direct induction of cotton somatic embryogenesis显示文摘COMPARED with indirect somatic embryogenesis,direct somatic embryogenesis apprars to be assoeiated with greater genetic and cytological uniformity,and it takes less time to induce direct embutogenesisBaohong Zhang Rong Feng Fang Liu Changbing Yao 1999Chinese Science Bulletin1999,44,8:2
6Haze detection, perfection and removal for high spatial resolution satellite imagery显示文摘Liu ChangBing Hu JianBo Lin Yu 2011International Journal of Remote Sensing2011,32,23:1
7A rare variant in COL11A1 is strongly associated with adult height in Chinese Han population显示文摘Human height is a highly heritable trait in which multiple genes are involved. Recent genome-wide association studies(GWASs) have identified that COL11A1 is an important susceptibility gene for human height. To determine whether the variants of COL11A1 are associated with adult and children height,we analyzed splicing and coding single-nucleotide variants across COL11A1 through exome-targeted sequencing and two validation stages with a total 20,426 Chinese Han samples. A total of 105 variants were identified by exome-targeted sequencing, of which 30 SNPs were located in coding region. The strongest association signal was chr1_103380393 with P value of 4.8 * 10^(-7). Chr1_103380393 also showed nominal significance in the validation stage(P = 1.21 * 10^(-6)). Combined analysis of 16,738 samples strengthened the original association of chr1_103380393 with adult height(P_(combined)= 3.1 * 10^(-8)), with an increased height of 0.292sd(standard deviation) per G allele(95% CI:0.19-0.40). There was no evidence(P = 0.843) showing that chr1_103380393 altered child height in 3688 child samples. Only the group of 12-15 years showed slight significance with P value of 0.0258.This study firstly shows that genetic variants of COL11A1 contribute to adult height in Chinese Han population but not to children height, which expand our knowledge of the genetic factors underlying height variation and the biological regulation of human height.Changbing Shen Xiaodong Zheng Jing Gao Caihong Zhu Randy Ko Xianfa Tang Chao Yang Jinfa Dou Yan Lin Yuyan Cheng Lu Liu Shuangjun Xu Gang Chen Xianbo Zuo Xianyong Yin Liangdan Sun Yong Cui Sen Yang Xuejun Zhang Fusheng Zhou 2016Journal of Genetics and Genomics2016,43,9:1
8The crucial roles of m^(6)A RNA modifications in cutaneous cancers:Implications in pathogenesis,metastasis,drug resistance,and targeted therapies显示文摘N6-methyladenosine(m^(6)A)is the most abundant internal modification on RNA.It is a dynamical and reversible process,which is regulated by m^(6)A methyltransferase and m^(6)A demethylase.The m^(6)A modified RNA can be specifically recognized by the m^(6)A reader,leading to RNA splicing,maturation,degradation or translation.The abnormality of m^(6)A RNA modification is closely related to a variety of biological processes,especially the occurrence and development of tumors.Recent studies have shown that m^(6)A RNA modification is involved in the pathogenesis of skin cancers.However,the precise molecular mechanisms of m^(6)A-mediated cutaneous tumorigenesis have not been fully elucidated.Therefore,this review will summarize the biological characteristics of m^(6)A modification,its regulatory role and mechanism in skin cancers,and the recent research progress of m^(6)A-related molecular drugs,aiming to provide new ideas for clinical diagnosis and targeted therapy of cutaneous cancers.Cong Huang Kaoyuan Zhang Yang Guo Changbing Shen Xiaoming Liu Haiyan Huang Xia Dou Bo Yu 2023Genes & Diseases2023,10,6:0
9Countermeasures for Development and Present Situation of Chives in Xiaogang Town, Xiaogan City, Hubei Province显示文摘Through the overview of main problems existing in chives production, its current situation and history, the thesis puts forward countermeasures for developing chives industrialization in Xiaogang Town, Xiaogan City.Yue CHEN Chunfu XIE Hongping LIU Huashu LIU Jian WANG Ming ZHENG Ju YUE Changbing LIU Dan LIU Hanhua TANG Yuchao PENG Yonggang NIU Ke HU 2013Asian Agricultural Research2013,5,5:0
10Effect of yttrium and manganese addition on catalytic soot combustion activity and anti-high-temperature stability of CeO_(2) catalyst显示文摘In order to analyze the influence of the addition of yttrium and manganese on the soot combustion performance and high temperature stability of CeO_(2) catalyst,a series of Y/Mn-modified CeO_(2) catalysts were prepared.The effects of structural properties,textural properties,oxygen vacancies,Ce^(3+),surface adsorbed oxygen species,reduction properties and desorption properties of oxygen species on the activity were analyzed by various characterization methods.The results of the activity test show that the addition of manganese is beneficial to enhancement of the activity,while the addition of yttrium increases the amount of reactive oxygen species,but decreases the activity.After aging at 700℃,the activity of the CeMn catalyst decreases most sharply,while the catalytic activity of the CeY catalyst can be maintained to a certain extent.Interestingly,the addition of yttrium and manganese at the same time can stabilize the activity.The fundamental reason is that yttrium and manganese move to the surface of the solid solution after aging,which increases the reduction performance of the catalyst,thus contributing to the increase of activity.Although the activity of CeYMn catalyst decreases after aging at 800℃,it is still higher than that of other catalysts aged at 700℃.Yi Zhu Xingyu Liu Wei Shi Jia Li Changbing Ye Ruimei Fang Huifeng Zhu Shanhu Chen Li Lan 2024Journal of Rare Earths2024,42,2:0
11Integrating Geochemical and Geophysical Method in Coexistence of Oil and Potassium to Identify K-rich Brine:Research and Application in Southwestern Sichuan显示文摘Lithology of Triassic in southwestern Sichuan is consistent with the whole basin,and there is no discussion about stratum division,the difference is stratum denudation which is made by the uplifting of Luzhou uplift。CHEN Kegui HUANG Changbing LIU Li XU Xiaoxiang 2014Acta Geologica Sinica(English Edition)2014,88,S1:0
12Structural characterization of char during co-gasification from torrefied sludge and Yangchangwan bituminous coal显示文摘The present study aims to investigate the physico-chemical structural evolution characteristics of char structure of CO_(2) atmosphere torrefaction pretreated sludge with Yangchangwan bituminous coal(YC)during co-gasification.The co-gasification reactivity of torrefied sludge and YC was measured using a thermogravimetric analyzer.The co-gasification reactivity of torrefied sludge with YC was thoroughly explored in depth by in situ heating stage microscope coupled with traditional characterization means of char sample(Scanning electron microscope,nitrogen adsorption analyzer,laser Raman spectroscopy).The results show that the gasification reaction rate of sludge treated under CO_(2) atmosphere and coal blended char was better than other char samples at 1100–1200℃.The torrefied sludge under CO_(2) atmosphere promoted its thermal decomposition to the maximum extent,so that it eventually was transformed into a large number of small broken particles.The specific surface area and ID1/IG ratio of blended char of torrefied sludge under CO_(2) atmosphere and YC were 1.70 and 1.07 times higher than that of YC,respectively.The in situ technique revealed that YC char with the addition of torrefied sludge undergo gasification by shrinking core modes and the presence of obvious ash melting flow phenomenon.It was more obvious than that of YC.Xinsha Zhang Yonghui Bai Jie Qin Shengli Shi Jiazhong Liu Shuaibing Wang Minhui Zhao Guiming Shi Changbing Ye Guangsuo Yu 2023International Journal of Coal Science & Technology2023,10,5:0
13An Incentive Mechanism for Federated Learning:A Continuous Zero-Determinant Strategy Approach显示文摘As a representative emerging machine learning technique, federated learning(FL) has gained considerable popularity for its special feature of “making data available but not visible”. However, potential problems remain, including privacy breaches, imbalances in payment, and inequitable distribution.These shortcomings let devices reluctantly contribute relevant data to, or even refuse to participate in FL. Therefore, in the application of FL, an important but also challenging issue is to motivate as many participants as possible to provide high-quality data to FL. In this paper, we propose an incentive mechanism for FL based on the continuous zero-determinant(CZD) strategies from the perspective of game theory. We first model the interaction between the server and the devices during the FL process as a continuous iterative game. We then apply the CZD strategies for two players and then multiple players to optimize the social welfare of FL, for which we prove that the server can keep social welfare at a high and stable level. Subsequently, we design an incentive mechanism based on the CZD strategies to attract devices to contribute all of their high-accuracy data to FL.Finally, we perform simulations to demonstrate that our proposed CZD-based incentive mechanism can indeed generate high and stable social welfare in FL.Changbing Tang Baosen Yang Xiaodong Xie Guanrong Chen Mohammed A.A.Al-qaness Yang Liu 2024IEEE/CAA Journal of Automatica Sinica2024,11,1:0
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