检索结果-南通市图书馆

A Prospective Cohort Study of Antimony Exposure and Cognitive Impairment in Older Adults—China,2017–2021

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China CDC weekly 2024年第23期6卷 537-541,I0001-I0007页

作者： Yidan Qiu Saisai Ji Chen Chen jinhui zhou Jun Wang Bing Wu Yuan Wei Fangyu Li Xulin Zheng Lanjing Xu Zheng Zhang Feng Zhao Guangdi Chen John SJi Yuebin Lyu Shilu Tong Xiaoming Shi Department of Big Data in Health Science School of Public HealthZhejiang UniversityHangzhou CityZhejiang ProvinceChina China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina Center for Global Health School of Public HealthNanjing Medical UniversityNanjing CityJiangsu ProvinceChina Department of Epidemiology and Biostatistics School of Public HealthJilin UniversityChangchun CityJilin ProvinceChina School of Public Health China Medical UniversityShenyang CityLiaoning ProvinceChina Institute of Environmental Health School of Public Healthand Bioelectromagnetics LaboratorySchool of MedicineZhejiang UniversityHangzhou CityZhejiang ProvinceChina Environmental Research Center Duke Kunshan UniversityKunshan CityJiangsu ProvinceChina Nicholas School of the Environment Duke UniversityDurhamNCUSA School of Public Health Institute of Environment and Population HealthAnhui Medical UniversityHefei CityAnhui ProvinceChina School of Public Health and Social Work Queensland University of TechnologyBrisbaneAustralia

What is already known about this topic?Antimony(Sb)has been identified as a new neurotoxicant that impacts neurological functions in animal ***,its effects on the human population remain *** is added by this report?The study reveals that there is an association between exposure to Sb and a higher incidence of cognitive impairment in older *** dose-response curve demonstrates that the risk of cognitive impairment consistently increased with higher levels of Sb exposure without a discernible *** are the implications for public health practice?Reducing exposure to Sb may have a beneficial effect in delaying or preventing the onset of cognitive *** intervention has the potential to significantly decrease the disease burden associated with cognitive impairment,ultimately contributing to social development.

关键词： Antimony development. exposure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

草本花卉在湘潭县城区绿化中的应用

绿色科技 2024年第17期26卷 23-27页

作者：周锦慧湘潭市湘潭县城市管理和综合执法局湖南湘潭411228

草花具有观赏性强、适应性广的特点,因而在城市中广泛应用。为了让草花在湘潭县城区中得到更好的应用,从2020年起进行了为期5年的调查,包括草花应用的种类(品种)、生长状况、开花时间、应用方式、种植方式和应用地点等。结果表明,5年来... 详细信息

草花具有观赏性强、适应性广的特点,因而在城市中广泛应用。为了让草花在湘潭县城区中得到更好的应用,从2020年起进行了为期5年的调查,包括草花应用的种类(品种)、生长状况、开花时间、应用方式、种植方式和应用地点等。结果表明,5年来,湘潭县城区中共使用了21种草花,以多年生的草本花卉为主,其中16种传统草花。草花的观花期覆盖全年,但以4-10月份较为集中。年度应用种类差异较大,其中2022年和2023年应用种类最多(11种)。草花的应用形式主要有花坛、花池、花台、花境、垂直绿化等形式,应用地点以道路绿化、公园绿化和广场绿化为主,种植方式有盆栽、地栽和箱栽。草花为湘潭县城区的绿化起到了很好的点缀、装饰和美化效果。建议湘潭县在引入更多具有观赏价值的草花品种、创新草花种植技术与管理模式、加强县城绿化规划与草花种植的结合、推广草花种植技术与知识的普及等方面予以加强。

关键词：草花应用调查湘潭县

Carbon-based anode materials for potassium-ion batteries:From material,mechanism to performance

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

SmartMat 2021年第2期2卷 176-201页

作者： jinhui zhou Shaojun Guo School of Materials Science&Engineering Peking UniversityBeijingChina

Potassium-ion batteries(PIBs)show great potential in the application of large-scale energy storage devices due to the comparable high operating voltage with lithium-ion batteries and lower ***-based materials are promising candidates as anodes for PIBs,for their low cost,high abundance,nontoxicity,environmental benignity,and *** this review,we will first discuss the potassium storage mechanisms of graphitic and defective carbon materials and carbon-based composites with various compositions and microstructures to comprehensively understand the potassium storage ***,several strategies based on heteroatoms doping,unique nanostructure design,and introduction of the conductive matrix to form composites are proposed to optimize the carbon-based materials and achieve high performance for ***,we conclude the existing challenges and perspectives for further development of carbon-based materials,which is believed to promote the practical application of PIBs in the future.

关键词： carbon-based anode materials heteroatoms doping potassium-ion batteries storage mechanism

煤岩体系微观组分及孔隙结构对甲烷吸附的影响研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

矿业安全与环保 2024年第1期51卷 51-60,69页

作者：周晋辉郭晓阳赵博金智新邓存宝刘继勇王蒙太原理工大学安全与应急管理工程学院山西太原030024 中联煤层气有限责任公司北京100011 华阳新材料科技集团有限公司博士后工作站山西阳泉045000

为了探究煤岩体系微观组分及孔隙结构对甲烷吸附的影响规律,选取沙曲一矿6组煤岩样,通过工业分析、X射线衍射、扫描电镜与能谱分析、低温氮吸附、计算机断层扫描,以及煤岩甲烷吸附实验,分别研究煤岩样微观组分、孔隙结构特征对甲烷吸附... 详细信息

为了探究煤岩体系微观组分及孔隙结构对甲烷吸附的影响规律,选取沙曲一矿6组煤岩样,通过工业分析、X射线衍射、扫描电镜与能谱分析、低温氮吸附、计算机断层扫描,以及煤岩甲烷吸附实验,分别研究煤岩样微观组分、孔隙结构特征对甲烷吸附的影响。研究结果表明:煤样和岩样无机组分质量分数分别为15.82%~20.93%、90.80%~94.68%,均以石英和黏土矿物为主;岩样BET比表面积为3.32~8.70 m^(2)/g、吸附孔体积为0.0095~0.0191 cm^(3)/g,均大于煤样的BET比表面积和吸附孔体积;岩样孔隙表面粗糙度、孔结构复杂度略大于煤样的孔隙表面粗糙度、孔结构复杂度,与黏土矿物含量高有关。煤岩样甲烷等温吸附曲线均符合朗格缪尔模型,可用极限吸附量V_(L)和朗格缪尔压力p_(L)描述吸附规律;相同吸附温度下,岩样存在一定的吸附性,煤样吸附性远大于岩样。分析得出,煤岩样的有机组分含量、黏土矿物含量、表面分形维数、比表面积和吸附孔体积对甲烷吸附过程V_(L)、p_(L)影响显著。基于多元线性回归分析了5种因素对甲烷吸附规律的影响关系:有机组分含量高、比表面积大的样品CH 4分子极限吸附量V_(L)越大,而黏土矿物含量高不利于吸附甲烷;吸附孔体积越小、黏土矿物含量越高、比表面积越大,朗格缪尔压力p_(L)越大。

关键词：煤岩体系微观组分孔隙结构甲烷吸附朗格缪尔模型

MCTSR:A super-resolution method for defects in gas-insulated switchgear X-ray images based on multi-scale contextual transformers

在线全文

学校读者我要写书评

暂无评论

High Voltage 2023年第3期8卷 504-513页

作者： Guote Liu jinhui zhou Linqiang Xu Licheng Li Bing Luo Sijun Chen School of Mechatronic Engineering and Automation Foshan UniversityFoshanChina School of Electric Power Engineering South China University of TechnologyGuangzhouChina Research Institute of China Southern Power Grid Co. Ltd.GuangzhouChina Guangdong Shuangdian Technology Co. Ltd.DongguanChina

As the core equipment of transmission and distribution hubs,the operational status of gas-insulated switchgear(GIS)is closely linked to the safety of the power ***,X-ray digital imaging technology has been extensively used in GIS equipment fault ***,the X-ray image of GIS is blurred,which is not conducive to the detection of tiny ***,a super-resolution method for GIS X-ray images based on multi-scale context transformers is proposed in this study,namely ***,a second-order image degradation model is introduced to generate GIS X-ray lowresolution images that more closely resemble the real ***,a contextual transformer gate module is constructed to improve attention to tiny defects in GIS X-ray ***,a U-Net discriminator network based on multi-scale contextual transformers is intended to enrich the information of the generated ***,the proposed discriminator is combined with the existing generator to compose a superresolution method applicable to GIS X-ray *** experimental results demonstrate that the method outperforms other methods in peak signal-to-noise ratio and structural similarity on the constructed GIS X-ray image *** addition,the output image of the proposed method facilitates the subsequent defect detection.

关键词： image resolution contextual

A highly efficient atomically thin curved Pd Ir bimetallene electrocatalyst

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2021年第9期8卷 100-110页

作者： Fan Lv Bolong Huang Jianrui Feng Weiyu Zhang Kai Wang Na Li jinhui zhou Peng zhou Wenxiu Yang Yaping Du Dong Su Shaojun Guo School of Materials Science and Engineering Peking University Department of Applied Biology and Chemical Technology Hong Kong Polytechnic University Frontier Institute of Science and Technology jointly with College of Science Xi'an Jiaotong University Center for Functional Nanomaterials Brookhaven National Laboratory School of Materials Science and Engineering & National Institute for Advanced Materials Nankai University College of Engineering Peking University

The multi-metallene with an ultrahigh surface area has great potential in precise tuning of surface heterogeneous d-electronic correlation by surface strain effect for the distinctive surface electronic structure, which is a brand new class of promising 2 D electrocatalyst for sustainable energy device application. However, achieving such an atomically thin multi-metallene still presents a great ***, we present a new synthetic method for an atomic-level palladium-iridium(Pd Ir) bimetallene with an average thickness of only～1.0 nm for achieving superior catalysis in the hydrogen evolution reaction(HER) and the formic acid oxidation reaction(FAOR). The curved Pd Ir bimetallene presents a top-ranked high electrochemical active area of 127.5 ± 10.8 m~2 g Pd+Ir-1in the reported noble alloy materials, and exhibits a very low overpotential, ultrahigh activity and improved stability for HER and FAOR. DFT calculation reveals that the Pd Ir bimetallene herein has a unique lattice tangential strain, which can induce surface distortion while concurrently creating a variety of concave-convex featured micro-active regions formed by variously coordinated Pd sites agglomeration. Such a strong strain effect correlates the abnormal on-site active 4 d10-t2g-orbital Coulomb correlation potential and directly elevates orbital-electronegativity exposure within these active regions, resulting in a preeminent barrier-free energetic path for significant enhancement of FAOR and HER catalytic performance.

关键词： strain metallene PdIr alloy atomically thin electrocatalyst

A new dual-ion battery based on amorphous carbon

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2019年第21期64卷 1634-1642页

作者： Wei(Alex)Wang Hanxin Huang Bin Wang Chang Qian Peihao Li jinhui zhou Zibin Liang Chao Yang Shaojun Guo Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing 100871China BIC-ESAT College of EngineeringPeking UniversityBeijing 100871China Beijing Key Laboratory for Magnetoeletric Materials and Devices(BKL-MEMD) Peking UniversityBeijing 100871China Department of Energy and Resources Engineering College of EngineeringPeking UniversityBeijing 100871China

The Na-based dual-ion batteries(NDIBs),combining the advantages of Na-ion batteries and dual-ion batteries,are attracting more attention due to their merits of abundant source,low cost and high energy ***,the main challenges faced by NDIBs are their low capacity and poor ***,we report a new ion storage mechanism for high-performance NDIBs using amorphous carbon(AOMC)as *** the graphite carbon that can only accommodate the PF6-anion(typical DIB system),the AOMC herein can both accommodate Na+cation and PF6-anion due to its amorphous feature,which is conceptually new dual-ion system for achieving much higher ***-situ X-ray photoelectron spectroscopy,X-ray diffraction and Raman studies reveal that the disordered carbon in the AOMC can be transformed to the partial graphitic stacking in short range,improving both capacity and cycling stability of *** a consequence,the AOMC delivers a highly reversible storage capacity of 136 mAhg-1 for 800 cycles at a very high current density of 2.0 Ag-1,much higher than all the reported *** concept can be generalized to develop high-performance dual-ion full cell using sodium ion preintercalated materials as anode and AOMC as cathode.

关键词： Na-based dual-ion batteries Amorphous carbon Storage mechanism Larger interlayer spacing

中国18个长寿地区65岁及以上老年人肌肉重量和力量的分布特征

在线全文

学校读者我要写书评

暂无评论

中华流行病学杂志 2024年第5期45卷 656-665页

作者：张振伟赵玉明陈泓洲李方玙齐力周锦辉陈晨王君吕跃斌石文惠施小明传染病溯源预警与智能决策全国重点实验室中国疾病预防控制中心环境与人群健康重点实验室/环境与健康相关产品安全所北京100021 中国医科大学公共卫生学院沈阳110122

目的了解中国18个长寿地区≥65岁老年人肌肉重量和力量的分布特征。方法研究对象来自在我国18个长寿地区开展的中国老年健康生物标志物队列研究,将2021年横断面调查的4662名≥65岁老年人纳入研究。通过问卷调查和体格检查收集研究对象... 详细信息

目的了解中国18个长寿地区≥65岁老年人肌肉重量和力量的分布特征。方法研究对象来自在我国18个长寿地区开展的中国老年健康生物标志物队列研究,将2021年横断面调查的4662名≥65岁老年人纳入研究。通过问卷调查和体格检查收集研究对象的社会人口学特征、生活方式、膳食摄入等信息,采用专业电子握力计测量手握力,生物电阻抗分析法测量全身肌肉重量(TSM),同时采用身高的平方和BMI调整后得到相对指标TSM_(Ht2)和TSM_(BMI),并根据亚洲肌少症工作组(AWGS)推荐的方法判定人群低肌肉重量和力量的比例。描述性分析研究对象肌肉重量和手握力的人群和地区分布特征,并采用广义可加模型分析肌肉重量和手握力随年龄的变化趋势。结果4662名研究对象年龄为(82.69±10.54)岁;男性占46.85%(2184名);汉族占96.27%(4488名)。男性TSM、TSMHt2和TSMBMI的M(Q1,Q3)分别为23.30(20.50,26.20)kg、9.02(8.13,9.89)kg/m^(2)、1.01(0.90,1.13)kg·(kg/m^(2))^(-1),均高于女性[18.20(15.70,20.70)kg、8.18(7.42,9.07)kg/m^(2)、0.79(0.69,0.90)kg·(kg/m^(2))^(-1)],差异有统计学意义(均P0.05);南方女性老年人的TSM_(Ht2)、TSM_(BMI)均高于北方女性老年人(均P0.05)。进一步根据AWGS推荐的方法判定后,低肌肉量和低握力老年人均具有年龄较大、小学以下文化程度、未婚/离异/丧偶、咀嚼能力差、日常生活活动能力损伤、位于南方地区等特征。结论中国18个长寿地区≥65岁老年人肌肉重量和力量存在人群和地区差异,且随着年龄增加呈下降趋势。

关键词：老年人肌肉重量握力横断面研究

中国65岁及以上老年人6年虚弱发生风险预测模型研究

在线全文

学校读者我要写书评

暂无评论

中华流行病学杂志 2024年第6期45卷 809-816页

作者：周锦辉齐力王君刘思馨石文惠叶丽红张振伟张曾航孟熙崔佳陈晨吕跃斌施小明国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院北京100021 中国疾病预防控制中心环境与人群健康重点实验室/中国疾病预防控制中心环境与健康相关产品安全所北京100021 北京市疾病预防控制中心北京100020 传染病溯源预警与智能决策全国重点实验室中国疾病预防控制中心环境与健康相关产品安全所北京100021 南方医科大学公共卫生学院流行病学系广州510515 中国医学科学院北京协和医学院群医学及公共卫生学院北京100730 中华医学会杂志社《中华预防医学杂志》编辑部北京100052 南京医科大学公共卫生学院全球健康中心南京211166

目的建立适用于中国≥65岁老年人的6年虚弱发生风险预测工具。方法数据源于2002-2018年中国老年健康影响因素跟踪调查,纳入13676名≥65岁基线无虚弱的老年人,通过最小绝对收缩和选择算子(LASSO)方法进行虚弱的关键预测因素识别,利用Cox... 详细信息

目的建立适用于中国≥65岁老年人的6年虚弱发生风险预测工具。方法数据源于2002-2018年中国老年健康影响因素跟踪调查,纳入13676名≥65岁基线无虚弱的老年人,通过最小绝对收缩和选择算子(LASSO)方法进行虚弱的关键预测因素识别,利用Cox比例风险回归模型建立虚弱发生风险预测模型,采用Bootstrap 2000次重复抽样方法进行模型内部验证,分别使用受试者工作特征曲线下面积(AUC)和校准曲线评价预测模型区分能力和校准能力,通过决策曲线对建立的预测工具开展净效益评估。结果研究对象年龄M(Q_(1),Q_(3))为81.0(71.0,90.0)岁。随访时间M(Q_(1),Q_(3))为6.0(4.1,9.2)年,期间共4126名(30.2%)老年人发生虚弱,发病密度为41.8/1000人年。LASSO筛选纳入15个关键的虚弱预测因素,包括年龄、性别、民族、受教育年限、肉类摄入、饮茶、做家务、饲养家禽/家畜、打牌/麻将、基线视力功能、日常生活自理能力评分、器具性日常生活自理能力评分、高血压、心脏病和自评健康状态。预测模型内部验证的AUC值为0.802,最大约登指数值为0.467,对应风险切点为19.0%。校准曲线提示,预测的虚弱发生概率和实际观测概率一致性较高。决策曲线提示在风险阈值<59%时,基于预测模型干预获得的净效益较全部干预或全部不干预更高,风险阈值为19.0%时,基于预测模型干预的净效益为0.10。结论基于问卷和体检等易获得信息构建的中国老年人6年虚弱发生风险预测模型效能好,具有筛选虚弱发生高危人群的潜在应用价值。

关键词：虚弱老年人关键因素预测模型