|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Responses and stability of power system under small Gauss type random excitation显示文摘With the integration of renewable power and electric vehicle,the power system stability is of increasing concern because the active power generated by the renewable energy and absorbed by the electric vehicle vary randomly.Based on the deterministic differential equation model,the nonlinear and linear stochastic differential equation models of power system under Gauss type random excitation are proposed in this paper.The angle curves under different random excitations were simulated using Euler-Maruyama(EM) numerical method.The numerical stability of EM method was proved.The mean stability and mean square stability of the power system under Gauss type of random small excitation were verified theoretically and illustrated with simulation sample. | ZHANG JianYong JU Ping YU YiPing WU Feng | 2012 | Science China(Technological Sciences)2012，55，7： | 20 |
| 2 | Effectiveness of Different Waist Circumference Cut-off Values in Predicting Metabolic Syndrome Prevalence and Risk Factors in Adults in China显示文摘Objective To study the effectiveness of waist circumference cut-off values in predicting the prevalence of metabolic syndrome(MetS) and risk factors in adults in China. Methods A cross-sectional survey was condcuted in 14 provinces(autonomous region, municipality) in China. A total of 47 325 adults aged ≥20 years were selected by multistage stratified sampling, and questionnaire survey and physical and clinical examination were conducted among them. MetS was defined according to the International Diabetes Federation(IDF) criteria and modified IDF criteria.Results The age-standardized prevalence of MetS was 24.2%(22.1% in men and 25.8% in women) and 19.5%(22.1% in men and 18.0% in women) according to the IDF criteria and modified IDF criteria respectively. The age-standardized prevalence of pre-MetS was 8.1%(8.6% in men and 7.8% in women) according to the modified IDF criteria. The prevalence of MetS was higher in urban residents than rural residents and in northern China residents than in southern China residents. The prevalence of central obesity was about 30% in both men and women according to the ethnicity-specific cut-off values of waist circumference for central obesity(90 cm for men and 85 cm for women). Multivariate regression analysis revealed no significant difference in risk factors between the two MetS definitions. Conclusion Using both the modified IDF criteria and ethnicity-specific cut-off values of waist circumference can provide more useful information about the prevalence of MetS in China. | ZHOU Hai Cheng LAI Ya Xin SHAN Zhong Yan JIA Wei Ping YANG Wen Ying LU Ju Ming WENG Jian Ping JI Li Nong LIU Jie TIAN Hao Ming JI Qiu He ZHU Da Long CHEN Li GUO Xiao Hui ZHAO Zhi Gang Li Qiang ZHOU Zhi Guang GE Jia Pu SHAN Guang Liang | 2014 | Biomedical and Environmental Sciences2014，27，5： | 17 |
| 3 | Single-phase-to-ground Fault Detection with Distributed Parameters Analysis in Non-direct Grounded Systems显示文摘The fast and accurate detection of the single-phaseto-ground fault is of great significance for the reliability and safety of the power supply.In this paper,novel algorithms for distribution network protection were proposed with distributed parameters analysis in non-direct grounded systems.At first,novel generating mechanisms of zero-sequence voltage and residual current were proposed.Then the compositions of residue parameters,including residual current and residual admittances,were decomposed in detail.After that,an improved algorithm for a fault resistance calculation of a single phase-to-earth fault was also proposed,and the algorithm is much more convenient as it only needs to measure the variation of the zero-sequence voltage and does not need the prerequisites of the faulty feeder selection.Furthermore,the fault feeder can also be selected by an improved calculation algorithm of zero-sequence admittance of the faulty feeder,which cannot be affected by the asymmetry of the network.Theoretical analysis and the MATALB/Simulink simulation results demonstrate the effectiveness of the proposed algorithms. | Baowen Liu Hongzhong Ma Honghua Xu Ping Ju | 2019 | CSEE Journal of Power and Energy Systems2019，5，1： | 16 |
| 4 | Changes in terrestrial surface dry and wet conditions on the Loess Plateau(China) during the last half century显示文摘This paper,using a revised Penman-Monteith model,computed the terrestrial surface humidity index of the Loess Plateau(China) based on climatic factors of monthly mean temperature,maximum temperature,minimum temperature,relative humidity,precipitation,wind speed and sunshine duration observed on the plateau from 1961 to 2008.The temporal-spatial distribution,anomaly distribution and sub-regional temporal variations of the terrestrial surface dry and wet conditions were analyzed as well.The results showed a decreasing trend in the annual average surface humidity from the southeast to the northwest in the research area.Over the period of 1961-2008,an aridification tendency appeared sharply in the central interior region of the Loess Plateau,and less sharply in the middle part of the region.The border region showed the weakest tendency of aridification.It is clear that aridification diffused in all directions from the interior region.The spatial anomaly distribution of the terrestrial surface dry and wet conditions on the Loess Plateau can be divided into three key areas:the southern,western and eastern regions.The terrestrial annual humidity index displayed a significantly descending trend and showed remarkable abrupt changes from wet to dry in the years 1967,1977 and 1979.In the above mentioned three key areas for dry and wet conditions,the terrestrial annual humidity index exhibited a fluctuation period of 3-4 years,while in the southern region,a fluctuation period of 7-8 years existed at the same time. | YuBi YAO RunYuan WANG JinHu YANG Ping YUE DengRong LU Guo,Ju XIAO Yang WANG LinChun LIU | 2013 | Journal of Arid Land2013，5，1： | 14 |
| 5 | Role of Fas/FasL Pathway-mediated Alveolar Macrophages Releasing Inflammatory Cytokines in Human Silicosis显示文摘The role of Fas/Fas ligand (FasL) in mediating alveolar macrophage (AM)-derived inflammatory cytokines in 29 human lung silicosis patients and 6 controls was studied.It showed that the serum levels of IL-1β,TNF-α,IL-8,MIP-1α,MCP-1,and TGF-β1were higher in silicosis patients than in controls,and increased with the progression of silicosis except TGF-β1 and IL-8.TGF-β1,IL-8,MCP-1,MIP-1αwere efficiently down-regulated by anti-FasL antibody or caspase-8 inhibitor,indicating that Fas/FasL signaling promotes the | YAO San Qiao HE Qin Cheng YUAN Ju Xiang CHEN Jie CHEN Gang LU Yao BAI Yu Ping ZHANG Chun Min YUAN Yang XU Ying Jun | 2013 | Biomedical and Environmental Sciences2013，26，11： | 13 |
| 6 | Paleoclimate Modeling in China: A Review显示文摘This paper provides a review of paleoclimate modeling activities in China. Rather than attempt to cover all topics, we have chosen a few climatic intervals and events judged to be particularly informative to the international community. In historical climate simulations, changes in solar radiation and volcanic activity explain most parts of reconstructions over the last millennium prior to the industrial era, while atmospheric greenhouse gas concentrations play the most important role in the20 th century warming over China. There is a considerable model–data mismatch in the annual and boreal winter temperature change over China during the mid-Holocene [6000 years before present(ka BP)], while coupled models with an interactive ocean generally perform better than atmospheric models. For the Last Glacial Maximum(21 ka BP), climate models successfully reproduce the surface cooling trend over China but fail to reproduce its magnitude, with a better performance for coupled models. At that time, reconstructed vegetation and western Pacific sea surface temperatures could have significantly affected the East Asian climate, and environmental conditions on the Qinghai–Tibetan Plateau were most likely very different to the present day. During the late Marine Isotope Stage 3(30–40 ka BP), orbital forcing and Northern Hemisphere glaciation, as well as vegetation change in China, were likely responsible for East Asian climate change. On the tectonic scale,the Qinghai–Tibetan Plateau uplift, the Tethys Sea retreat, and the South China Sea expansion played important roles in the formation of the East Asian monsoon-dominant environment pattern during the late Cenozoic. | JIANG Dabang YU Ge ZHAO Ping CHEN Xing LIU Jian LIU Xiaodong WANG Shaowu ZHANG Zhongshi YU Yongqiang LI Yuefeng JIN Liya XU Ying JU Lixia ZHOU Tianjun YAN Xiaodong | 2015 | Advances in Atmospheric Sciences2015，32，2： | 12 |
| 7 | MicroRNA-185-5p mediates regulation of SREBP2 expression by hepatitis C virus core protein显示文摘AIM: To investigate the molecular mechanism for regulation of cholesterol metabolism by hepatitis C virus(HCV) core protein in Hep G2 cells.METHODS: HCV genotype 1b core protein was cloned and expressed in Hep G2 cells. The cholesterol content was determined after transfection. The expression of sterol regulatory element binding protein 2(SREBP2) and the rate-limiting enzyme in cholesterol synthesis(HMGCR) was measured by quantitative real-time PCR and immunoblotting after transfection. The effects of core protein on the SREBP2 promoter and 3'-untranslated region were analyzed by luciferase assay. We used different target predictive algorithms, micro RNA(mi RNA) mimics/inhibitors, and site-directed mutation to identify a putative target of a particular mi RNA.RESULTS: HCV core protein expression in Hep G2 cells increased the total intracellular cholesterol level(4.05 ± 0.17 vs 6.47 ± 0.68, P = 0.001), and this increase corresponded to an increase in SREBP2 and HMGCR m RNA levels(P = 0.009 and 0.037, respectively) and protein expression. The molecular mechanism studyrevealed that the HCV core protein increased the expression of SREBP2 by enhancing its promoter activity(P = 0.004). In addition, mi R-185-5p expression was tightly regulated by the HCV core protein(P = 0.041). Moreover, overexpression of mi R-185-5p repressed the SREBP2 m RNA level(P = 0.022) and protein expression. In contrast, inhibition of mi R-185-5p caused upregulation of SREBP2 protein expression. mi R-185-5p was involved in the regulation of SREBP2 expression by HCV core protein. CONCLUSION: HCV core protein disturbs the cholesterol homeostasis in Hep G2 cells via the SREBP2 pathway; mi R-185-5p is involved in the regulation of SREBP2 by the core protein. | Min Li Qi Wang Shun-Ai Liu Jin-Qian Zhang Wei Ju Min Quan Sheng-Hu Feng Jin-Ling Dong Ping Gao Jun Cheng | 2015 | World Journal of Gastroenterology2015，21，15： | 10 |
| 8 | High-voltage Ride Through Strategy for DFIG Considering Converter Blocking of HVDC System显示文摘This paper presents a P-Q coordination based highvoltage ride through(HVRT) control strategy for doubly fed induction generators(DFIGs) based on a combined Q-V control and P-V de-loading control. The active/reactive power injection effect of DFIG on transient overvoltage is firstly analyzed and the reactive power capacity evaluation of DFIG considering its de-loading operation is then conducted. In the proposed strategy, the reactive power limit of DFIG can be flexibly extended during the transient process in coordination with its active power adjustment. As a result, the transient overvoltage caused by DC bipolar block can be effectively suppressed. Moreover, key outer loop parameters such as Q-V control coefficient and deloading coefficient can be determined based on the voltage level of point of common coupling(PCC) and the available power capacity of DFIG. Finally, case studies based on MATLAB/Simulink simulation are used to verify the effectiveness of the proposed control strategy. | Changping Zhou Zhen Wang Ping Ju Deqiang Gan | 2020 | Journal of Modern Power Systems and Clean Energy2020，8，3： | 10 |
| 9 | Hydrographic field investigations in the Northern South China Sea by open cruises during 2004-2013显示文摘 | Lili Zeng Qiang Wang Qiang Xie Ping Shi Lei Yang Yeqiang Shu Ju Chen Dandan Sui Yunkai He Rongyu Chen Dongxiao Wang | 2015 | Science Bulletin2015，60，6： | 10 |
| 10 | Differences between dynamics factors for interannual and decadal variations of rainfall over the Yangtze River valley during flood seasons显示文摘The rainfall over the Yangtze River val- ley during flood seasons (June to July) shows both interannual and decadal variations. The rainfall has been increasing since 1990, showing a decadal sig- nal. The variations of rainfall are influenced by the multi-scale interactions in the atmosphere-ocean coupled climate system. The rainfall, SST, and cir- culation are analyzed with the Chinese 160 station data, and other observational/reanalysis data, re- spectively. The separation between the interannual and decadal variations is carried out. The key areas affecting the Yangtze rainfall are the western Pacific warm pool on the interannual time scale and the EINO3 area on the decadal time scale, respectively. The circulation anomaly associated with the interan- nual variation occurs in the upper troposphere whereas that associated with the decadal variation appears in the lower troposphere. | PING Fan LUO Zhexian JU Jianhua | 2006 | Chinese Science Bulletin2006，51，8： | 9 |
| 11 | One-pot synthesis and characterization of a new, branched polycarbosilane bearing allyl groups显示文摘A highly branched polycarbosilane bearing allyl groups has been prepared by a one-pot synthesis with chloromethyltrichlor-osilane, chloromethylmethyldichlorosilane and allyl chloride as the starting materials. The resultant polymer, with the approximate formula [SiH1.2(CH3)0.71(CH2CH=CH2)0.09CH2]n, has been characterized by 1H, 13C, and 29Si NMR, GPC, TG and elemental analysis. It could be cross-linked thermally at 170℃in the absence of oxygen. Pyrolysis of the polymer gave a ceramic with a yield of about 70%. | Tian Hua Huang Zhao Ju Yu Xu Min He Mu He Huang Li Fu Chen Hai Ping Xia Li Tong Zhang | 2007 | Chinese Chemical Letters2007，18，6： | 9 |
| 12 | Composition, spatial distribution, and environmental significance of water ions in Pumayum Co catchment, southern Tibet显示文摘主要阳离子(Mg2+ , Ca2+ , Na+ ,和 K+) 和阴离子的化学(HCO3 ? , SO4 2 ? ,并且 Cl ?) 在普麦乌姆湖的水里,公司和它的流入河被学习,在各种各样的流入河和湖之中揭示明显的离子的差别。湖水的化学类型是 Mg2+-Ca2+-HCO3 ?-SO4 2+ ,但是主要流入河的主要离子是 Ca2+-Mg2+-HCO3 ? 。在 Jiaqu 河的湖入口,主要流入河,有在深度以内的水化学的重要变化不到 2 m。然而,它在湖的另外的区域是几乎同类的。与水化学和湖水的氧同位素的分发的证据,因此,一个结论能被构画出那条 Jiaqu 河在沉没三角洲上在水的 hydrochemistry 上有不同效果,而这为另外的河不是事实。吉布斯阴谋表明负责控制湖水的化学作文的主导的机制是在排水区域捱过的岩石。离子比率和第三的阴谋进一步探索了控制集水的水化学的主要过程,即,捱过的碳酸盐,捱过的黄铁矿,并且硅酸盐捱过。在河水和湖水之间的不同 hydrochemistry 特征可以源于 CaCO3 降水。调查结果将在湖在 paleolimnological 研究有益于碳酸盐的环境意义的解释。 | ZHU Liping JU Jianting WANG Yong XIE Manping WANG Junbo PENG Ping ZHEN Xiaolin LIN Xiao | 2010 | Journal of Geographical Sciences2010，20，1： | 9 |
| 13 | Impending HRT wave precursors to the Wenchuan M_s8.0 earthquake and methods of earthquake impending prediction by using HRT wave显示文摘We deployed four geo-electric monitoring stations in Sichuan and Yunnan provinces from 2004, using the new generation of equipment (PS-100) and technologies to capture the HRT wave earthquake precursor. Before the Wenchuan Ms8.0 earthquake, we recorded the HRT wave precursor at the only operating station in Hongge (HG, Δ=465 km) and found that significant impending signal had been recorded at the station in the early morning ( 0―5 am) of 12th of May, 2008. The precursor for this earthquake is consistent with precursors recorded for other strong earthquakes. The measured physical properties (geo-resistivity and telluric-current) show tidal wave period oscillations from several days to several months before the earthquakes and the amplitude of such HT oscillation increases significantly towards the occurrence of an earthquake. These HT and RT waves from the epicenter have a causal relationship with the earthquakes that happened several days later. The arrival time of two RT waves is proportional to the distance from the station to the epicenter. The estimated natural decay of the amplitude is correlated with the natural period (T0) of the earthquake fault, which is proportional to the fault length. From this relationship, we can predict the earthquake magnitude. For magnitude 6―9 earthquakes, the natural period is about 1―6 hours. Such oscillation comes from the epicenter area and they can propagate several thousand kilometers in the Earth's crust. Before a strong earthquake in the shallow crust, the conductive pore fluid will experience major changes before the fault rapture. Such fluid change will emit an oscillation in the pore fluid pressure. This is the mechanism for the HRT wave generation. Since the China Earthquake Administration funded the HRT wave short-term earth-quake prediction project in 2003, the first record of HRT precursor wave has been recorded from the 2004-12-26 Sumatra Mw9.0 earthquake with the largest epicentre distance Δ=2900 km. Thereafter, we have captured HRT waves from more than twenty strong earthquakes, which are well-matched and show repeatability, consistency and regularity. All our observation with the HRT waves demonstrate that HRT wave precursors to earthquakes indeed exist. Strong earthquakes can be predicted and short-term and impending earthquake prediction is achievable in the very near future. From all the observations, including the ones at HG station from Wenchuan Ms8.0 earthquake, we conclude that using HRT wave to predict earthquakes is feasible. | QIAN FuYe ZHAO BiRu QIAN Wei ZHAO Jian HE ShiGen ZHANG HongKui LI ShiYu LI ShaoKun YAN GuLiang WANG ChengMin SUN ZhenKai ZHANG DongNing LU Jun ZHANG Ping YANG GuoJun SUN JiaLin GUO ChunSheng TANG YuXiong XU JianMing XIA KunTao JU Hang YIN BangHong LI Ming YANG DongSheng QI WeiLuo HE TaiMing GUAN HuaPing ZHAO YuLin | 2009 | Science China Earth Sciences2009，52，10： | 8 |
| 14 | CRISPR/Cas9-mediated gene knockout reveals a guardian role of NF-κB/RelA in maintaining the homeostasis of human vascular cells显示文摘 | Ping Wang Zunpeng Liu Xiaoqian Zhang Jingyi Li Liang Sun Zhenyu Ju Jian Li Piu Chan Guang-Hui Liu Weiqi Zhang Moshi Song Jing Qu | 2018 | Protein & Cell2018，9，11： | 8 |
| 15 | Hydrodynamic process of Tibetan Plateau lake revealed by grain size:Case study of Pumayum Co显示文摘Under the background of global warming,some lakes on the Tibetan Plateau(TP) are potentially sensitive to temperature change.With a case study of Pumayum Co,where glacier meltwater is important to supply(we call this a glacier-fed lake hereafter),we analyze the sensitivity of lake sediment grain size to temperature change.This is done by resolving the modern hydrodynamic process,coupled with comparison of paleoclimatic proxies.According to the spatial distributions of parameters,percentage of grain size and the grain size frequency distribution curve,hydrodynamic processes are analyzed.Five clastic sedimentation types are thereby discriminated.In the open lake area,suspended load transport is the main transport agent.Grain Size Trend Analysis(GSTA),a sediment dynamics model,reveals a trend toward eastward transport.This indicates that the largest and glacier-fed river,the Jiaqu River,influences the entire lake(not just the subsurface alluvial fan),and that lake sediment grain size may serve as a temperature indicator.Time series comparison between grain size of a short core from the central lake and meteorological data confirms this temperature indication,which in turn shows reliability of the method discriminating the hydrodynamic process.This case study will improve the ability of paleoclimatic reconstruction using lake sediment in glacier-fed lakes on the Tibetan Plateau. | JU JianTing ZHU LiPing FENG JinLiang WANG JunBo WANG Yong XIE ManPing PENG Ping ZHEN XiaoLin LÜXinMiao | 2012 | Chinese Science Bulletin2012，57，19： | 7 |
| 16 | Changes in Land Use and Agricultural Production Structure Before and After the Implementation of Grain for Green Program in Western China–Taking Two Typical Counties as Examples显示文摘Soil erosion becomes a serious environmental problem in the world, especially in western China. An effective management practice called the Grain for Green Program(GGP), which was launched in 1999, aims to reduce soil and water loss and alleviate the ecological environment problem in western China. Two typical counties in western China, the Zhongxian(in Chongqing Municipality) and Ansai(in Shaanxi Province) were chosen to evaluate the dynamic changes of land use and agricultural production structure before and after the implementation of the Program in this paper. The results showed that the cultivated land area was reduced by 7.08% from 1989 to 2003. The cultivated land per person was decreased by 8.42% during 1999-2003. Moreover, the stability index of the secondary sector of the economy was increased from 0.91 in the period 1990-1999 to 0.94 in the following ten years. In addition, the stability index of tertiary economic sector increased from 0.88 to 0.92 in Zhongxian county. Meanwhile, the cultivated land area was reduced by 15.48% from 1990 to 1999. The soil erosion modulus was decreased by 33.33% from 1999 to 2006. Also, the stability index of secondary and tertiary economic sectors was 0.86 in the period 1998-2002. However, it decreased by 77% during 2002 to 2007 in Ansai County. These results imply that the Grain for Green Program had different impact on the two regions. Several effective strategies of soil and water conservation have been carried out to ameliorate the sustainable development of ecological environment and economy in these two counties of western China. | ZHOU Ping WEN An-bang YAN Dong-chun SHI Zhong-lin GUO Jin JU Zhan-sheng ZHANG Yi-lan | 2014 | Journal of Mountain Science2014，11，2： | 6 |
| 17 | Food Frequency Questionnaire for Chinese Children Aged 12-17 Years: Validity and Reliability显示文摘Objective The primary objective of this study was to examine the validity and reliability of a semi-quantitative food frequency questionnaire(FFQ) among Chinese children aged 12-17 years. Methods A semi-quantitative 72-food item FFQ was developed for children aged 12-17 years. The reliability and validity of this FFQ were evaluated against 24-h dietary recalls(24 h DRs) to measure the consumption of foods and nutrients. We administered two FFQs and three DRs to children(N = 160) over a period of 1 month to evaluate the reliability and validity. Reliability was examined by quartile agreement and intraclass correlation coefficients(ICCs), and validity was examined by quartile agreement, Bland-Altman plots and correlation with DRs. Results For reliability, the ICCs between the two FFQs ranged from 0.21 to 0.76 for foods and nutrients, and the quartile agreement ranged from 70.0% to 95.0% in the same or adjacent quartiles. Spearman’s correlation coefficients of foods and nutrients between the second FFQ and the 24 h DRs ranged from-0.04 to 0.59. The Bland-Altman plots demonstrated good agreement across the range of intakes among nutrients. The quartile agreement ranged from 50.0% to 100.0%, with infrequent misclassification. Conclusion The FFQ assessment of dietary intakes demonstrated acceptable relative validity and high reproducibility for Chinese children aged 12-17 years. | LIU Dan JU La Hong YANG Zhen Yu ZHANG Qian GAO Jian Fen GONG Di Ping GUO Dan Dan LUO Shu Quan ZHAO Wen Hua | 2019 | Biomedical and Environmental Sciences2019，32，7： | 6 |
| 18 | Eosinophil-derived CCL-6 impairs hematopoietic stem cell homeostasis显示文摘嗜曙红血球(曙光女神) 长在层次造血的系统被看作了结束阶段受动器房间。证据的众多的线建议了那个曙光女神是关于各种各样的煽动性或有免疫力的反应的开始,繁殖和规定的多功能的白血球,特别在过敏疾病。最近的研究证明了那个曙光女神也为骨头髓血浆房间的维护和 B 房间的区别被要求。然而,曙光女神是否贡献造血的干细胞(HSC ) 的规定,仍然保持不清楚动态平衡。这里,我们证明曙光女神由在野类型的老鼠损害 HSC 静止和体质能力破坏 HSC 动态平衡后面的 ovalbumin (卵) 挑战并且甚至由引起骨头髓 HSC 在 Cd3-Il-5 转基因的老鼠的失败和疲劳。HSC 的损害维护和功能与导致曙光女神的氧化还原作用不平衡(增加的氧化 phosphorylation 和减少的抗氧化剂层次) 被联系。用集体 spectrometry,更重要地,我们决定 CCL-6 在嗜曙红血球过多下面在高水平被表示。我们证明 CCL-6 为损害 HSC 动态平衡导出曙光女神、负责。有趣地,有特定的抵销抗体的 CCL-6 的阻塞,当在质问卵的老鼠加重嗜曙红血球过多航线发炎时,恢复了 HSC 的体质能力。因此,我们的学习在 HSC 动态平衡揭示 Eos/CCL-6 的意外功能。 | Chao Zhang, Fei Li, Xufei Du, Man Luo, Wen Hua, Wen Li, Zhihua Chen, Songmin Ying, Huahao Shen Weiwei Yi, Hu Wang, Zhenyu Ju Hu Wang, Zhenyu Ju Ping Wu, Chao Peng, Catherine CL Wong James J Lee Songmin Ying Songmin Ying Huahao Shen | 2018 | Cell Research2018，28，3： | 6 |
| 19 | Genetic and Antibiotic Resistance Characteristics ofCampylobacterjejuni Isolated from Diarrheal Patients,Poultry and Cattle in Shenzhen显示文摘Objective To investigate genetic and antibiotic resistance characteristics of Campylobacter jejuni(C. jejuni) isolated from Shenzhen. Methods Multilocs sequence typing and agar dilution methods were used to define the genotype and antibiotic resistance of C. jejuni, respectively. Results In total, 126 C. jejuni strains were isolated. The prevalence of C. jejuni was 5.3% in diarrheal patients. The prevalence in poultry meat(36.5%) was higher than that in cattle meat(1.1%). However, the prevalence in poultry cloacal swabs(27.0%) was lower than that in cattle stool(57.3%). Sixty-two sequence types were obtained, among which 27 of the STs and 10 alleles were previously unreported. The most frequently observed clonal complexes were ST-21(11.9%), ST-22(10.3%), and ST-403(7.1%). ST-21, ST-45, ST-354, ST-403, and ST-443 complexes overlapped between isolates from patients and cattle, whereas ST-45 and ST-574 complexes overlapped between isolates from patients and poultry. All C. jejuni were resistant to at least one antibiotic. The highest resistance rate was toward ciprofloxacin(89.7%), followed by tetracycline(74.6%), and nalidixic acid(69.0%). Conclusion This is the first report of the genotypes and antibiotic resistance of C. jejuni in Shenzhen. Overlapping clonal complexes were found between isolates from patients and cattle, and between patients and poultry. | JU Chang Yan ZHANG Mao Jun MA Yan Ping LU Jing Rang YU Mu Hua CHEN Hui LIU Chu Yun GU Yi Xin FU Yan Yan DUAN Yong Xiang | 2018 | Biomedical and Environmental Sciences2018，31，8： | 5 |
| 20 | Two new glycosides from the genus of Cassia显示文摘二新 glycosides 被孤立并且描绘由光谱从肉桂 obtusifolia 的种子和肉桂 angustifolia 的叶子的分析。结构作为 1-hydroxyl-2-acetyl-3,8-dimethoxynaphthalene-6-O- β -d-apiofuranosyl- 被阐明(1 → 2 )- β -d-glucopyranoside 和 2-acetyl-3-methyl-8-methoxyl-1,4-naphthoquinone-6-O- β - d-glucopyranoside。 | Zhu Ju Wang Qiu Ping Wu Li Ying Tang Mei Hong Fu Yan He Qian Feng Gong Lu Qi Huang | 2007 | Chinese Chemical Letters2007，18，10： | 4 |
您所在的机构暂未开通此部分的功能，请联系管理员