检索结果-南通市图书馆

Chinese Chemical Letters 2024年第3期35卷 140-143页

作者： Kaiqiang Hou Genwang Zhu yujie feng Yanming Liu Xie Quan Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education China)School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

Electrochemical oxidation is an effective method to degrade persistent organic ***,due to the limited catalytic activity of traditional thin film electrodes,the anodic oxidation process is slow and usually requires high energy ***,Ti/SnO_(2)-Sb electrode with regulated surface structure was reported to enhance the performance for electrochemical oxidation of persistent organic *** electrode deposited with SnO_(2)-Sb nanoneedles(Ti/N-SnO_(2)-Sb)showed higher oxidation *** kinetic constant for perfluorooctanoic acid(PFOA)oxidation was 2.0 h^(-1)and the total organic carbon removal rate was 81.7%(4 h)at a relatively low current density of 6 mA/cm^*** with Ti/SnO_(2)-Sb thin film and nanoparticles,Ti/N-SnO_(2)-Sb significantly improved the electrochemical active area and·OH yield,and simultaneously reduced the electron transfer resistance,which enabled it to oxidize PFOA more rapidly even at a lower *** work provides a new strategy for promoting the electrochemical oxidation performance.

关键词： Electrochemical oxidation Nanoneedle SnO_(2)-Sb Perfluoroalkyl compounds Electrochemical degradation Persistent organic pollutants

Spatiotemporal features and vertical structures of four types of mesoscale eddies in the Kuroshio Extension region

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2024年第5期43卷 30-40页

作者： Bowen Sun Shuchang Xu Zhankun Wang yujie feng Baofu Li School of Geography and Tourism Qufu Normal UniversityRizhao 276800China Faculty of Information Science and Engineering Ocean University of ChinaQingdao 266100China

Except for conventional mesoscale eddies,there are also abundant warm cyclonic eddies(WCEs)and cold anticyclonic eddies(CAEs)in the global *** on the global mesoscale eddy trajectory atlas product,satellite altimetric and remote sensing datasets,and three-dimensional temperature/salinity dataset,spatiotemporal features of WCEs and CAEs are compared with traditional cold cyclonic eddies and warm anticyclonic eddies in the Kuroshio Extension(KE;28°−43°N,140°−170°E)*** of abnormal eddies like radius,amplitude,eddy kinetic energy,and proportion in all eddies behave in significant asymmetry on the north and south sides of the KE *** eddies in the general sense,temporal feature analysis reveals that it is more favorable to the formation and maintenance of WCEs and CAEs in summer and autumn,while winter is the *** spatiotemporal variation of abnormal eddies is likely because the marine environment varying with time and ***,proportion of abnormal eddies increases rapidly in decaying stage during the whole eddy lifespan,resulting in smaller average radius,amplitude,sea surface temperature anomaly and sea surface height anomaly compared to normal *** three-dimensional composite structures for four types of eddies expose that the difference between abnormal and conventional eddies is not just limited to the sea surface,but also exists within the water below the sea *** structures also indicate that the anomalous temperature signal is confined in the water from the sea surface to layers at about 30 m in the KE region.

关键词： mesoscale anomaly Kuroshio

磷共沉淀对水铁矿相转化和有机物吸附行为的影响

在线全文

学校读者我要写书评

暂无评论

环境科学学报 2024年第6期44卷 72-82页

作者：冯羽婕陈再明浙江工商大学环境科学与工程学院杭州310018

磷酸根、植酸等含磷化合物共沉淀可阻碍水铁矿的相转化,改变水铁矿的纳米孔隙结构,但其对水铁矿吸附有机化合物行为的影响尚不清楚.本文将正磷酸、植酸和DNA加入Fe3+化学沉淀过程,得到了系列P/Fe比例的含磷2-线水铁矿,测试了水铁矿的组... 详细信息

磷酸根、植酸等含磷化合物共沉淀可阻碍水铁矿的相转化,改变水铁矿的纳米孔隙结构,但其对水铁矿吸附有机化合物行为的影响尚不清楚.本文将正磷酸、植酸和DNA加入Fe3+化学沉淀过程,得到了系列P/Fe比例的含磷2-线水铁矿,测试了水铁矿的组成结构、Fe(II)催化转化及对土霉素等抗生素、单宁酸等有机酸的吸附作用.结果表明,正磷酸共沉淀、植酸共沉淀和DNA共沉淀使水铁矿颗粒中直径为7~100 nm的孔体积增加,缓解了水铁矿通过Fe(II)催化向针铁矿和纤铁矿的转化.由于水铁矿表面正磷酸、植酸的络合位点和土霉素、单宁酸(特别是羟基)络合位点存在较大差异,正磷酸根共沉淀、植酸共沉淀对水铁矿表面的占据对富含羟基的土霉素和单宁酸的吸附位点影响相对较小,但通过缓解水铁矿团聚、促进孔体积和孔填充(或多层吸附)最终使化合物吸附能力增强.水铁矿表面磷酸、植酸、DNA与头孢克肟、水杨酸、邻苯二甲酸、腺苷单磷酸(特别是羧基和磷羟基)的络合位点显著重叠,正磷酸共沉淀、植酸共沉淀和DNA共沉淀占据了水铁矿表面吸附位点并最终导致吸附的急聚降低.这些结果丰富了磷共沉淀对水铁矿吸附抗生素和天然有机酸影响的认识,可为土壤中铁矿物对有机污染的缓解和有机质的保护提供参考.

关键词：水铁矿磷转化吸附抗生素

同方期刊数据库

A Retrospective Investigation of a Case of Dual Infection by Avian-Origin Influenza A(H10N5)and Seasonal Influenza A(H3N2)Viruses-Anhui Province,China,December 2023-January 2024

在线全文

学校读者我要写书评

暂无评论

China CDC weekly 2024年第25期6卷 605-613页

作者： Jun He Lei Gong Xiaolong Chen Deman Cheng Sai Hou Mengyao Kong Xun Wei Junling Yu Qian Zhu Weiwei Li Wanhang Lu yujie feng Hongya Gui Weixi Fang Peng Wang Yidan Xia Yong Sun Wanrong Luo Yun Yang Guowei Shen Hui Wang Jiabing Wu Anhui Provincial Center for Disease Control and Prevention Hefei CityAnhui ProvinceChina School of Public Health Bengbu Medical UniversityBengbu CityAnhui ProvinceChina Public Health Research Institute of Anhui Province Hefei CityAnhui ProvinceChina School of Public Health Anhui Medical UniversityHefei CityAnhui ProvinceChina Xuancheng City Center for Disease Control and Prevention Xuancheng CityAnhui ProvinceChina Guangde City Center for Disease Control and Prevention Guangde CityAnhui ProvinceChina

Summary What is known about this topic?H10 avian influenza viruses circulate in wild birds and can reassort with other subtypes.H10N8 and H10N3 have previously caused sporadic human infections in *** is added by this report?This report documents the first human case of coinfection with avian-origin H10N5 and seasonal H3N2 influenza *** investigations identified H10N5 in environmental samples linked to the patient,but no transmission to close contacts *** are the implications for public health practice?Enhanced surveillance of avian influenza in live poultry markets and poultry populations is crucial for thoroughly characterizing the epidemiology,transmission,and pathogenesis of H10N5 *** assessments of outbreak control measures is essential to guide effective management.

关键词： poultry Anhui thoroughly

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

儿童慢性病家庭照顾者健康赋能的研究进展

军事护理 2024年第5期41卷 90-92,100页

作者：冯玉洁商艳霞周伟昆明医科大学护理学院云南昆明650500 解放军联勤保障部队第九二〇医院儿科云南昆明650032

儿童慢性病是指发生在0~18岁之间,持续时间超过3个月或3年中发生3次及以上的慢性非传染性疾病[1]。近年来,由于人们生活方式的改变和医学技术的发展,一些原本急性致命性的疾病逐渐转变为慢性病,导致儿童慢性病的患病率逐年上升。国外儿... 详细信息

儿童慢性病是指发生在0~18岁之间,持续时间超过3个月或3年中发生3次及以上的慢性非传染性疾病[1]。近年来,由于人们生活方式的改变和医学技术的发展,一些原本急性致命性的疾病逐渐转变为慢性病,导致儿童慢性病的患病率逐年上升。国外儿童慢性病的患病率是过去40年的4倍,占全部儿童的12%~16%。而在中国,儿童慢性病的发病率更是达到10%~20%[2]。儿童慢性病已成为全球广泛关注的公共卫生问题之一[3]。

关键词：儿童慢性病家庭照顾者健康赋能

Uncertainties of critical temperatures based on higher-order fluctuations of the largest fragment charge

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第1期48卷 110-124页

作者：肖尔熙雷昕黄英格冯玉洁祝龙苏军 Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

The new signature of liquid-gas phase transition has been well indicated by the higher-order fluctuations of the largest fragment charge,but the uncertainties of critical temperatures based on this signature have not been *** study extracts the critical temperatures of liquid-gas phase transition in nuclear reactions and investigates their *** the isospin-dependent quantum molecular dynamics model in conjunction with the statistical model GEMINI enables us to describe the dynamical path from the initial to the final *** isotope thermometer and a quantum fluctuation thermometer are employed to extract the nuclear *** higher-order fluctuations of the largest fragment charge and critical temperatures are studied in^(124)Sn+^(120)Sn collisions ranging from 400 to 1000 MeV/nucleon and^(124)Sn+AZ collisions at 600 MeV/*** revealed that the pseudo-critical point is robustly indicated by the higher-order fluctuations of the largest fragment *** critical temperatures extracted by the isotope thermometer are relatively consistent,with an uncertainty of 15%,while those obtained by the quantum fluctuation thermometer are heavily influenced by the incident energy and mass number of target *** excitation energy E∗and bound charge Zbound are used for *** two ensembles represent the statistical properties of the initial and final states of the system,*** initial-final correlations of statistical properties might lead to two ***,the size distribution of the largest fragment at the pseudo-critical point based on the Zbound ensemble is wide,while that based on E∗ensemble exhibits bimodality,which is a typical characteristic in the liquid-gas coexistence of a finite ***,the temperature at the pseudo-critical point based on the Zbound ensemble is higher than that based on the E∗***,the projectile-like system exhibits a significant dynamical ef

关键词： liquid-gas phase transition higher-order fluctuations of the largest fragment charge critical temperature initial-final correlations of the statistical properties dynamical path isospin-dependent quantum molecular dynamics

高粱低氮胁迫相关novel-miRNA的鉴定及其靶基因预测

在线全文

学校读者我要写书评

暂无评论

应用与环境生物学报 2024年第2期30卷 377-384页

作者：马建华杨艳君赵红梅冯玉杰罗爱国晋中学院生物科学与技术系/晋中学院山西特色植物资源应用研究中心榆次030600

为探究microRNA(miRNA)在高粱低氮胁迫反应中的调控作用,对高粱幼苗进行短时(8 h)和长时(15 d)低氮胁迫处理,采用Illumina HiSeqTM2000对其小RNA进行高通量测序,利用mireap软件预测novel-miRNA,分析其表达差异性.对差异表达的miRNA进行... 详细信息

为探究microRNA(miRNA)在高粱低氮胁迫反应中的调控作用,对高粱幼苗进行短时(8 h)和长时(15 d)低氮胁迫处理,采用Illumina HiSeqTM2000对其小RNA进行高通量测序,利用mireap软件预测novel-miRNA,分析其表达差异性.对差异表达的miRNA进行表达模式聚类分析及茎环RT-PCR荧光定量验证.采用TargetFinder软件对差异表达的novel-miRNA进行靶基因预测,并对预测的靶基因进行Gene Ontology(GO)注释分类.结果显示:123个novel-miRNAs中,有40个novel-miRNAs具有显著或极显著表达差异.根系中,短时胁迫下有6个为上调表达,10个下调表达,长时胁迫时,上调和下调表达数各3个;叶片中,短时胁迫4个为上调表达,22为下调表达,长时胁迫上调和下调表达数分别为2个和9个.这些差异表达的novel-miRNAs在根系和叶片中的表达模式不同,分别聚为Ⅰ、Ⅱ、Ⅲ三种类型.它们不均等分布在不同染色体上,2号染色体上分布最多,其次为4号、1号和7号染色体.novel-miRNAs预测到8个靶基因,这些靶基因涉及物质代谢、刺激反应、生物调控、生殖发育等多个生命过程.本研究从高粱中鉴定了40个低氮胁迫差异表达的novel-miRNAs,预测到8个靶基因,结果为高粱低氮胁迫调控机制研究提供相关miRNAs及优良候选基因.(图7表3参36)

关键词：高粱低氮胁迫 novel-miRNA 靶基因

在线全文

学校读者我要写书评

暂无评论

香蕉中啶氧菌酯残留行为和膳食风险评估

中国南方果树 2024年第2期53卷 129-134页

作者：田海冯玉洁罗激光吉训聪徐志王明月马晨中国热带农业科学院分析测试中心/海南省热带果蔬产品质量安全重点实验室/农业农村部热作产品质量安全风险评估实验室海口571101 海南省农业科学院植物保护研究所/海南省农业科学院农产品质量安全与标准研究中心海口571100

香蕉生产中普遍使用啶氧菌酯,这可能对消费者健康造成潜在风险。为了评估膳食风险,我们拟研究香蕉中啶氧菌酯残留行为,在海南和云南两地分别开展香蕉中啶氧菌酯消解动态和最终残留试验,于施药后不同时间采样检测样品中啶氧菌酯残留,并... 详细信息

香蕉生产中普遍使用啶氧菌酯,这可能对消费者健康造成潜在风险。为了评估膳食风险,我们拟研究香蕉中啶氧菌酯残留行为,在海南和云南两地分别开展香蕉中啶氧菌酯消解动态和最终残留试验,于施药后不同时间采样检测样品中啶氧菌酯残留,并计算膳食风险商。结果表明,在添加浓度0.02~1.0 mg/kg范围内,香蕉中啶氧菌酯的平均回收率为101.4%~109.2%,相对标准偏差为2.1%~4.0%,最小检出量为0.01 ng,最低检出浓度为0.02 mg/kg。香蕉中啶氧菌酯降解符合一级动力学方程,降解半衰期为8.7~13.8 d,最终残留量的最大值为0.045 mg/kg,施药60 d后香蕉中啶氧菌酯降解率大于99.62%。我国普通成人啶氧菌酯的估算每日摄入量估计为0.35 mg,风险商(RQ)为0.06,远远小于1。说明在该试验条件下,香蕉中啶氧菌酯的残留水平不会对普通成人造成膳食风险。

关键词：香蕉啶氧菌酯残留膳食风险回收率

维普期刊数据库博看期刊

学生家长流感疫苗接种意愿及影响因素的调查分析

在线全文

学校读者我要写书评

暂无评论

实用预防医学 2024年第7期31卷 797-800页

作者：朱梦冯玉杰祝茜朱标侯赛安徽省疾病预防控制中心安徽合肥230601

目的调查学生家长流感疫苗的接种意愿及影响因素,为提高学生流感疫苗接种率提供参考。方法采取分层随机整群抽样方法,2022年6—10月在阜阳市、亳州市和宣城市开展问卷调查。分析学生家长流感疫苗的接种意愿,进行单因素分析和logistic多... 详细信息

目的调查学生家长流感疫苗的接种意愿及影响因素,为提高学生流感疫苗接种率提供参考。方法采取分层随机整群抽样方法,2022年6—10月在阜阳市、亳州市和宣城市开展问卷调查。分析学生家长流感疫苗的接种意愿,进行单因素分析和logistic多因素回归分析。结果2637名研究对象中,2282名(86.54%)家长愿意为孩子接种流感疫苗,355名(13.46%)家长不愿意。家长不愿意接种流感疫苗的原因中居前三位的分别为担心不安全(61.56%),流感症状轻无需接种(35.74%),接种费用高、性价比低(27.93%)。logistic多因素回归分析结果显示家长流感知识素养得分(OR=1.064)、家长是否接受过健康宣教(OR=2.240)、家长学历(OR=1.106)、学生流感疫苗接种史(OR=1.685)是影响家长流感疫苗接种意愿影响因素,差异有统计学意义(P<0.05)。结论家长流感疫苗接种意愿较高,但仍存在部分家长不愿意接种,因此加强流感疫苗健康宣教工作,提高家长的流感认知水平,扩大流感疫苗的优惠力度,有利于进一步提高家长对流感疫苗的接种意愿。

关键词：流感疫苗接种意愿调查

Electrosynthesis of H_(2)O_(2) through a two-electron oxygen reduction reaction by carbon based catalysts:From mechanism,catalyst design to electrode fabrication

在线全文

学校读者我要写书评

暂无评论

Environmental Science and Ecotechnology 2022年第3期11卷 1-31页

作者： Jingkun An yujie feng Qian Zhao Xin Wang Jia Liu Nan Li School of Environmental Science and Engineering Academy of Environment and EcologyTianjin UniversityNo.92 Weijin RoadNankai DistrictTianjin300072China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyNo.73 Huanghe RoadNangang DistrictHarbin150090China MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlNankai UniversityNo.38 Tongyan RoadJinnan DistrictTianjin300350China

Hydrogen peroxide(H_(2)O_(2))is an efficient oxidant with multiple uses ranging from chemical synthesis to wastewater *** in-situ H_(2)O_(2)production via a two-electron oxygen reduction reaction(ORR)will bring H_(2)O_(2)beyond its current *** development of carbon materials offers the hope for obtaining inexpensive and high-performance alternatives to substitute noble-metal catalysts in order to provide a full and comprehensive picture of the current state of the art treatments and inspire new research in this ***,the most up-to-date findings in theoretical predictions,synthetic methodologies,and experimental investigations of carbon-based catalysts are systematically *** electrode fabrication and modification methods were also introduced and compared,along with our original research on the air-breathing cathode and three-phase interface theory inside a porous *** addition,our current understanding of the challenges,future directions,and suggestions on the carbon-based catalyst designs and electrode fabrication are highlighted.

关键词： H_(2)O_(2)production Oxygen reduction reaction Catalytic mechanism Catalyst design Electrode fabrication