检索结果-南通市图书馆

Genetic Characteristics of Lipooligosaccharide and Capsular Polysaccharide of Campylobacter jejuni from Different Sources in China

引用

Biomedical and environmental Sciences 2022年第12期35卷 1106-1114页

作者： WANG Jia Qi CHEN Xiao Li ZHOU Gui Lan WANG Hai Rui GU Yi Xin ZHANG Jian Zhong SHAO Zhu Jun ZHANG Mao Jun State Key Laboratory for Infectious disease Prevention and control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China National Institute of environmental health Chinese Center for Disease Control and PreventionBeijing 100021China

Objective To determine the distribution of two important virulence factors[lipooligosaccharide(LOS)and capsular polysaccharide(CPS)]in Campylobacter jejuni(***)isolated from different sources in China and to develop a rapid screening method for Guillain–Barrésyndrome(GBS)-associated *** Whole-genome sequencing was carried out for 494 *** *** Ortho MCL software was used to define the LOS/CPS gene *** genotyping was performed with serotype-specific sequence alignment using the BLAST ***-time Polymerase chain reaction(PCR)was developed with the unique sequences of specific CPS *** Nine novel and 29 previously confirmed LOS classes were *** classes A,B,and C were the most common(48.2%,238/494)among the 494 ***-six capsular types were identified in 448 ***2,HS4c,HS5/31,HS19,and HS8/17 were the most frequent CPS genotypes(58.7%,263/448).Strains of 17 CPS genotypes(strain number>5)had one or two prevalent LOS classes(P<0.05).Multiplex real-time PCR for rapid identification of HS2,HS19,and HS41 was developed and validated with strains of known *** Our results describe the genetic characteristics of the important virulence factors in *** strains in *** multiplex real-time PCR developed in this study will facilitate enhanced surveillance of GBS-associated strains in China.

关键词： Campylobacter jejuni Lipooligosaccharide Capsular polysaccharide Multiplex real-time PCR

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Low-Carbon Dispatching for Virtual Power Plant with Aggregated Distributed Energy Storage Considering Spatiotemporal Distribution of Cleanness Value

引用

Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 346-358页

作者： Hongchao Gao Tai Jin Guanxiong Wang Qixin Chen Chongqing Kang Jingkai Zhu State Key Laboratory of Power System Operation and control Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Sichuan Energy Internet Research Institute Tsinghua University Chengdu 200016China Power Dispatching and control Center of Shanghai Municipal Electric Power Company Shanghai 200122China IEEE

The scale of distributed energy resources is increasing,but imperfect business models and value transmission mechanisms lead to low utilization ratio and poor *** address this issue,the concept of cleanness value of distributed energy storage(DES)is proposed,and the spatiotemporal distribution mechanism is discussed from the perspectives of electrical energy and *** on this,an evaluation system for the environmental benefits of DES is constructed to balance the interests between the aggregator and the power system ***,an optimal low-carbon dispatching for a virtual power plant(VPP)with aggregated DES is constructed,where-in energy value and cleanness value are both *** achieve the goal,a green attribute labeling method is used to establish a correlation constraint between the nodal carbon potential of the distribution network(DN)and DES behavior,but as a cost,it brings multiple nonlinear ***,a solution method based on the convex envelope(CE)linear re-construction method is proposed for the multivariate nonlinear programming problem,thereby improving solution efficiency and ***,the simulation verification based on the IEEE 33-bus DN is *** simulation results show that the multidimensional value recognition of DES motivates the willingness of resource users to ***,resolving the impact of DES on the nodal carbon potential can effectively alleviate overcompensation of the cleanness value.

关键词： Distributed energy storage virtual power plant(VPP) spatiotemporal distribution low-carbon dispatching

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reduction of the oxidative damage to H_(2)O_(2)-induced HepG2 cells via the Nrf2 signalling pathway by plant flavonoids Quercetin and Hyperoside

引用

Food Science and Human Wellness 2024年第4期13卷 1864-1876页

作者： Meijing Zhang Gaoshuai Zhang Xiangxing Meng Xinxin Wang Jiao Xie Shaoshu Wang Biao Wang Jilite Wang Suwen Liu Qun Huang Xu Yang Jing Li Hao Wang State Key Laboratory of Food Nutrition and Safety Tianjin University of Science and Technology(TUST)Tianjin 300457China Key Laboratory of environmental Pollution Monitoring and disease control Ministry of EducationGuizhou Medical UniversityGuiyang 550025China College of Chemical Engineering and Materials Science Tianjin University of Science and Technology(TUST)Tianjin 300457China department of Agriculture Hetao CollegeBayannur 015000China College of Food Science&Technology Hebei Normal University of Science and TechnologyQinhuangdao 066004China National Center of Supervision and Inspection for Processed Food Quality Tianjin Institute for Food Safety Inspection TechnologyTianjin 300457China

Hyperoside and quercetin are similar in molecular *** this study,the antioxidant regulatory targets of hyperoside and quercetin are mainly in the nuclear factor(erythroid-2-derived)-related factor 2(Nrf2)pathway predicted by network *** the antioxidant effect and mechanism of hyperoside and quercetin were measured and compared in H_(2)O_(2)-induced Hep G2 cells and Caenorhabditis *** findings indicated that quercetin was more effective than hyperoside in reducing oxidative damage,which was proved by improved cell viability,decreased reactive oxygen species(ROS)production,decreased cellular apoptosis,and alleviated mitochondrial *** addition,quercetin was more efficient than hyperoside in enhancing the expression of Nrf2-associated m RNAs,increasing the activities of superoxide dismutase(SOD),glutathione peroxidase(GSH-Px),and catalase(CAT),and reducing the cellular malondialdehyde(MDA)*** was superior to hyperoside in prolonging the lifespan of worms,decreasing the accumulation of lipofuscin,inhibiting ROS production,and increasing the proportion of skn-1 in the *** the Nrf2 inhibitor ML385,we verified that quercetin and hyperoside primarily protected the cells against oxidative damage via the Nrf2 signalling ***,molecular docking and dynamics simulations demonstrated that the quercetin-Kelch-like ECH-associated protein 1(Keap1)complex was more stable than the hyperoside-Keap1 *** stable structure of the complex might hinder the binding of Nrf2 and Keap1 to release Nrf2 and facilitate its entry into the nucleus to play an antioxidant ***,quercetin had a better antioxidant than hyperoside.

关键词： Hyperoside Quercetin HepG2 cell Oxidative damage Nrf2 signalling pathway

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Stroke-Limitation AMD control System with Variable Gain and Limited Area for High-Rise Buildings

引用

工程与科学中的计算机建模(英文) 2024年第1期138卷 865-884页

作者： Zuo-Hua Li Qing-Gui Wu Jun Teng Chao-Jun Chen School of Civil and environmental Engineering Harbin Institute of Technology(Shenzhen)Shenzhen518055China department of Civil and environmental Engineering The Hong Kong Polytechnic UniversityHong Kong100872China

Collisions between a moving mass and an anti-collision device increase structural responses and threaten structural *** active mass damper(AMD)with stroke limitations is often used to avoid ***,a strokelimited AMD control system with a fixed limited area shortens the available AMD stroke and leads to significant control *** solve this problem,the design approach with variable gain and limited area(VGLA)is proposed in this ***,the boundary of variable-limited areas is calculated based on the real-time status of the moving *** variable gain(VG)expression at the variable limited area is deduced by considering the saturation of AMD ***,numerical simulations of a stroke-limited AMD control system with VGLA are conducted on a high-rise building *** numerical simulations show that the proposed approach has superior strokelimitation performance compared with a stroke-limited AMD control system with a fixed limited ***,the proposed approach is validated through experiments on a four-story steel frame.

关键词： High-rise buildings active control stroke limitations variable gain variable limited area

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

MEIC-global-CO_(2):A new global CO_(2)emission inventory with highly-resolved source category and sub-country information

引用

Science China Earth Sciences 2024年第2期67卷 450-465页

作者： Ruochong XU Dan TONG Qingyang XIAO Xinying QIN Cuihong CHEN Liu YAN Jing CHENG Can CUI Hanwen HU Wenyu LIU Xizhe YAN Huaxuan WANG Xiaodong LIU Guannan GENG Yu LEI Dabo GUAN Kebin HE Qiang ZHANG department of Earth System Science Ministry of Education Key Laboratory for Earth System ModelingInstitute for Global Change StudiesTsinghua UniversityBeijing100084China State Key Joint Laboratory of Environment Simulation and Pollution control School of EnvironmentTsinghua UniversityBeijing100084China Chinese Academy of environmental Planning Beijing100041China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084China

CO_(2)emission inventory provides fundamental data for climate research and emission ***,most global CO_(2)emission inventories were developed with energy statistics from International Energy Agency(IEA)and were available at country level with limited source ***,as the first step toward a high-resolution and dynamic updated global CO_(2)emission database,we developed a data-driven approach to construct seamless and highly-resolved energy consumption data cubes for 208 countries/territories,797 sub-country administrative divisions in 29 countries,42 fuel types,and 52 sectors,with the fusion of activity data from 24 international statistics and 65 regional/local *** CO_(2)emissions from fossil fuel combustion and cement production in 1970–2021 were then estimated with highly-resolved source category(1,484 of total)and sub-country information(797 of total).Specifically,73%of global CO_(2)emissions in 2021 were estimated with sub-country information,providing considerably improved spatial resolution for global CO_(2)emission *** the support of detailed information,the dynamics of global CO_(2)emissions across sectors and fuel types were presented,representing the evolution of global economy and progress of climate *** differences of sectoral contribution were found across sub-country administrative divisions within a given country,revealing the uneven distribution of energy and economic structure among different *** estimates were generally consistent with existing databases at aggregated level for global total or large emitters,while large discrepancies were observed for middle and small *** database,named the Multiresolution Emission Inventory model for Climate and air pollution research(MEIC)is publicly available through http://*** with highly-resolved information and timely update,which provides an independent carbon emission accounting data source for climate rese

关键词： CO_(2)emissions Data-driven approach Highly-resolved source category Sub-country information

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Impact of wastewater treatment plant effluent discharge on the antibiotic resistome in downstream aquatic environments:a mini review

引用

Frontiers of environmental Science & Engineering 2024年第3期18卷 131-141页

作者： Zhiguo Su Lyujun Chen Donghui Wen School of Environment Tsinghua UniversityBeijng 100084China 2 Zhejiang Provincial Key Laboratory of Water Science and Technology Department of Environmental Technology and EcologyYangtze Delta Region Institute of Tsinghua UniversityJiaxing 314050China College of environmental Sciences and Engineering Peking UniversityBeijing 100871China

Antimicrobial resistance(AMR)has emerged as a significant challenge in human *** treatment plants(WWTPs),acting as a link between human activities and the environment,create ideal conditions for the selection and spread of antibiotic resistance genes(ARGs)and antibioticresistant bacteria(ARB).Unfortunately,current treatment processes are ineffective in removing ARGs,resulting in the release of large quantities of ARB and ARGs into the aquatic environment through WWTP ***,in turn,leads to their dispersion and potential transmission to human through water and the food *** safeguard human and environmental health,it is crucial to comprehend the mechanisms by which WWTP effluent discharge influences the distribution and diffusion of ARGs in downstream *** this study,we examine the latest researches on the antibiotic resistome in various waterbodies that have been exposed to WWTP effluent,highlighting the key influencing ***,recommendations for future research and management strategies to control the dissemination of ARGs from WWTPs to the environment are provided,with the aim to achieve the“One health”objective.

关键词： Antibiotic resistance genes(ARGs) Wastewater treatment plants(WWTPs) Effluent-receiving waterbodies environmental risk Influencing mechanism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of organic fertilizers produced using different techniques on rice grain yield and ammonia volatilization in double-cropping rice fields

引用

Pedosphere 2024年第1期34卷 110-120页

作者： Mingcheng HU Andrew JWADE Weishou SHEN Zhenfang ZHONG Chongwen QIU Xiangui LIN Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution control Collaborative Innovation Center of Atmospheric Environment and Equipment Technologyand School of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China department of Geography and environmental Science University of ReadingReading RG65DWUK Haina Research Institute of Guangdong Haina Agricultural Co. Ltd.Huizhou 516000China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China

Ammonia(NH_(3)) volatilization from rice fields contributes to poor air quality and indicates low nitrogen use efficiency. Although organic fertilizers can meet the nitrogen requirement for rice growth, the simultaneous effects of organic fertilizers on NH_(3) volatilization and rice yield in paddy fields are poorly understood and quantified. To address this gap in our knowledge, experimental field plots were established in a conventional double-cropping paddy field in the Pearl River Delta region, southern China. Five fertilizer treatments were used besides the control with no fertilizer: fresh organic fertilizer, successively composted organic fertilizer, chemically composted organic fertilizer, mixture of chemically composted organic fertilizer with inorganic fertilizer, and chemical fertilizer. Ammonia volatilization was measured using a batch-type airflow enclosure method. No significant differences in grain yield were observed among organic and chemical fertilizer treatments. However, compared with chemical fertilizer, chemically composted organic fertilizer and successively composted organic fertilizer significantly decreased total NH_(3) volatilization by 70% and 68%, respectively. The ammonium-nitrogen concentration in field surface water correlated strongly(P < 0.01) and positively with NH_(3) volatilization across fertilization treatments. Our findings demonstrate that chemically composted organic fertilizer can sustain rice yield while reducing NH_(3) volatilization. An important future step is to promote these field measurements to similar rice cultivation areas to quantify the regional-and national-scale impact on air quality and nitrogen deposition in sensitive areas, and to design and implement better fertilizer management practices.

关键词： air quality crop production manure NH_(3)emission nitrogen use efficiency

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sanitary Evaluation of Rural Water Supply Projects—China,2020

引用

China CDC weekly 2022年第35期4卷 775-778页

作者： Yunting Xia Hongxing Li Chuanlong Xiong Rong Zhang Shandong Provincial Key Laboratory of communicable disease control and Prevention Department of Communicable Disease Control and PreventionShandong Center for Disease Control and PreventionJinanShandongChina

Summary What is already known about this topic?Over the last decade,the centralized water quality and supply have been substantially enhanced in rural ***,compared with the urban water supply,most of the rural Water Supply Projects(WaSPs)are small in scale,simple in engineering facilities,and poor in *** is added by this report?Most of the rural WaSPs have been basically guaranteed sustainable sources of *** measures should be taken to improve water disinfection effects,water losses control,and operational and maintenance *** WaSPs with water supplyhealth practice?Laws and regulations requiring rural WaSPs to carry out a sanitary evaluation should be *** should use tools such as World health Organization Water Safety Plans to identify and control risks.

关键词： Rural rural carry

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Epidemiological Characteristics of Human Rabies——Shandong Province,China,2010-2020

引用

China CDC weekly 2022年第35期4卷 793-797页

作者： Xiaomei Zhang Xueying Tian Bo Pang Zhiqiang Wang Wenji Zhai Xiaolin Jiang Zengqiang Kou Shujun Ding Xianjun Wang Shandong Provincial Key Laboratory of communicable disease control and Prevention Department of Communicable Disease Control and PreventionShandong Center for Disease Control and PreventionJinanShandongChina

Introduction:Rabies is a viral zoonotic disease that causes progressive and fatal inflammation in the *** has caused more than 5,000 human deaths in Shandong Province since *** study aimed to analyze the epidemiological characteristics of human rabies in Shandong Province from 2010 to 2020 and to provide a scientific basis for policy ***:The data of reported human rabies cases from 2010 to 2020 were obtained from China’s National Notifiable disease Reporting System,and data related to exposure and post-exposure prophylaxis(PEP)of the cases were acquired through case ***:A total of 414 human rabies cases were reported in Shandong Province from 2010 to *** of the 414 total cases,87.20%were primarily farmers;83.10%were over 40 years old.70.29%(265/377)belonged to categoryⅢexposure;and 96.67%(377/390)were exposed to the virus through infected *** vaccine inoculation rate of these cases after exposure was only 8.85%;1.03%(4/390)had been vaccinated with rabies immunoglobulin,developing the disease 11 to 13 days after categoryⅢ***:Dogs were still the primary animal *** rabies patients died due to no or inadequate post-exposure *** inoculation rates for dogs should reach the target of 70%as soon as *** departments should improve the accessibility and quality of PEP;and improve the health literacy of the elderly in rural areas.

关键词： Shandong category policy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Integrated Analysis of Water Quality in Artificial Fishponds Using WQI and GIS in South-East Sierra Leone

引用

Journal of Geoscience and Environment Protection 2024年第1期12卷 145-163页

作者： Hadji D. S. Kallon Lamin R. Mansaray Misbah Fida Pratap Sundar Shrestha Institute of environmental Management and Quality control Njala University Njala Sierra Leone School of Water and Environment Chang’an University Xi’an China Quality control Laboratory of Njala University Njala Sierra Leone department of Surveys and Geo-Informatics School of Environmental Sciences Njala University Njala Sierra Leone

Artificial fishponds play a pivotal role in global aquaculture, serving as a source of livelihood and nourishment for many communities. Ensuring the sustained health and productivity of Fishes in these environments relies heavily on water quality management. This assessment was done to determine the water quality of ten artificial fishponds in the south-eastern part of Sierra Leone using twelve physicochemical factors (pH, BOD, EC, TDS, turbidity, COD, Fe2+, Mg2+, Ca2+, NH3, , and alkalinity) to find out the Water Quality Index (WQI) and spatial distribution of respective parameters. The assessment of artificial fishponds using WQI and Inverse Distant Weighting (IDW) integration represents a relatively underexplored area within the domain of environmental water resources. The WQI was determined using the “Weighted Arithmetic Water Quality Index’’ method. The results of WQI in the study area range from 65.05 to 147.26. Several locations have water quality deemed unsuitable for consumption, while others range from good to very poor. It is essential to address and improve water quality in locations categorized as unsuitable for consumption and very poor to ensure safe and healthy water sources. It was also clear from the calculation that the smaller the mean concentration value of the pH as compared to the ideal value (7), the smaller the WQI value and the better the water quality. To keep the artificial fishpond water in good condition, mass domestic use should be controlled, and draining of surrounding organic matter should be stopped in ponds Bo_001, Kenema_001, and Kenema_002.

关键词： Physicochemical Parameters Water Quality Index WQI-“Weighted Arithmetic Index Method”

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：