检索结果-南通市图书馆

Levels of insecticide resistance to deltamethrin,malathion,and temephos,and associated mechanisms in Aedes aegypti mosquitoes from the Guadeloupe and Saint Martin islands(French West Indies)

引用

Infectious Diseases of Poverty 2017年第1期6卷 339-353页

作者： Daniella Goindin Christelle Delannay Andric Gelasse Cedric Ramdini Thierry Gaude Frederic Faucon Jean-Philippe David Joël Gustave anubis vega-rua Florence Fouque Laboratory of Medical Entomology Unit Environment and HealthPasteur Institute of Guadeloupe97183 Les AbymesGuadeloupe Vector control Service Regional Health AgencyDothemareLes AbymesGuadeloupe Alpine Ecology Laboratory(LECA) CNRSUMR 55532233 rue de la piscine BP5338041 GrenobleCedex 9France University of Grenoble Alpes GrenobleFrance Environmental and Systems Biology(BEeSy) University of Grenoble AlpesGrenobleFrance Vector Environment and Society Unit Special Programme for Research and Training in Tropical Diseases(TDR)World Health Organization20Avenue AppiaCH-1211 Geneva 27Switzerland

Background:In the Guadeloupe and Saint Martin islands,Aedes aegypti mosquitoes are the only recognized vectors of dengue,chikungunya,and Zika *** around 40 years,malathion was used as a mosquito adulticide and temephos as a *** the European Union banned the use of these two insecticide molecules in the first decade of the 21st century,deltamethrin and Bacillus thuringiensis *** are the remaining adulticide and larvicide,respectively,used in *** order to improve the management of vector control activities in Guadeloupe and Saint Martin,we investigated *** resistance to and mechanisms associated with deltamethrin,malathion,and ***:*** mosquitoes were collected from six different localities of Guadeloupe and Saint *** were used for malathion and temephos bioassays,and adult mosquitoes for deltamethrin bioassays,following World Health Organization *** resistance(Kdr)genotyping for V1016I and F1534C mutations,and expression levels of eight enzymes involved in detoxification mechanisms were examined in comparison with the susceptible reference Bora Bora ***:Resistance ratios(RR50)calculated for *** larvae showed high resistance levels to temephos(from 8.9 to 33.1-fold)and low resistance levels to malathion(from 1.7 to 4.4-fold).Adult females displayed moderate resistance levels to deltamethrin regarding the time necessary to affect 50%of individuals,varying from 8.0 to *** investigations on adult mosquitoes showed high resistant allele frequencies for V1016I and F1534C(from 85 to 96%and from 90 to 98%,respectively),as well as an overexpression of the glutathione S-transferase gene,GSTe2,the carboxylesterase CCEae3a,and the cytochrome genes 014614,CYP6BB2,CYP6M11,and ***:*** populations from Guadeloupe and Saint Martin exhibit multiple resistance to organophosphates(temephos and malathion),and pyrethroids(deltamethrin

关键词： Aedes aegypti Mosquitoes Insecticide resistance Deltamethrin Malathion Temephos Guadeloupe Saint Martin

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

星星西班牙丝绸亭

引用

室内设计与装修 2024年第1期 138-139页

作者： [捷克]Paloma Ca'izares Office coco(编译) Josema Cutillas(摄影) Asier rua(摄影) Paloma Ca?izares Office

丝绸亭是Paloma Ca'izares Office对编织物进行研究的初步成果,旨在深入挖掘硬质织物的结构潜力。项目于2023年春在洛格罗尼奥(西班牙)国际建筑与设计节(Concentrico)期间展出,地点包括位于洛格罗尼奥的拉里奥哈官方建筑学院和马德里城... 详细信息

丝绸亭是Paloma Ca'izares Office对编织物进行研究的初步成果,旨在深入挖掘硬质织物的结构潜力。项目于2023年春在洛格罗尼奥(西班牙)国际建筑与设计节(Concentrico)期间展出,地点包括位于洛格罗尼奥的拉里奥哈官方建筑学院和马德里城市议程部。

关键词：编织物丝绸西班牙马德里初步成果

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

城市大气Δ^(14)CO_(2)监测中背景站和背景值的选取——以深圳市为例

引用

地球化学 2024年第3期53卷 309-319页

作者：周志华李平阳成志能李静李军陈多宏张涛熊向陨马嵩萨如拉张干广东省深圳生态环境监测中心站广东深圳518049 广东大湾区区域生态环境变化与综合治理国家野外科学观测研究站广东深圳518049 中国科学院广州地球化学研究所有机地球化学国家重点实验室广东广州510640 中国科学院深地科学卓越创新中心广东广州510640 广东省生态环境监测中心生态环境部环境保护区域空气质量监测重点实验室广东广州510308

城市化石源CO_(2)(CO_(2)ff)排放的可靠量化对准确理解全球和区域碳核算至关重要。虽然CO_(2)放射性C同位素(Δ^(14)CO_(2))可作为独立示踪剂对CO_(2)ff排放进行量化,但其准确性仍然受制于背景站和背景值的选取。鉴于此,本研究以深圳市... 详细信息

城市化石源CO_(2)(CO_(2)ff)排放的可靠量化对准确理解全球和区域碳核算至关重要。虽然CO_(2)放射性C同位素(Δ^(14)CO_(2))可作为独立示踪剂对CO_(2)ff排放进行量化,但其准确性仍然受制于背景站和背景值的选取。鉴于此,本研究以深圳市为例,对比评估了距离观测站点由远及近的全球/大陆背景站、区域背景站、城市背景站和城市背景值共8个背景选项,提出了一种基于Keeling Plot(KP)右上角区域样点对背景站和背景值进行筛选和评定的新方法。结果表明,深圳市背景首选区域背景站南岭,其次为KP右上角均值。针对不同城市,可依据边界条件的复杂性、有无背景观测等情况使用不同的背景选取方法。本研究为基于Δ^(14)CO_(2)估算重点城市和区域的CO_(2)ff排放量提供了背景站和背景值选取的基本原理和实践经验。

关键词： Δ^(14)CO_(2) 化石源CO_(2) 背景站背景值城市深圳

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

Hierarchically 3D structured milled lamellar MoS2/nano-silicon@carbon hybrid with medium capacity and long cycling sustainability as anodes for lithium-ion batteries

引用

Journal of Materials Science & Technology 2019年第9期35卷 1840-1850页

作者： Peng Zhang Qiang rua Honglin Yan Xianhua Hou Fuming Chen Shejun Hu Lingzhi Zhao Guangdong Engineering Technology Research Center o f Efficient Green Energy and Environmental Protection Materials South China Normal University Guangzhou 510006China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou 510006China Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education) Guangzhou 510006China Institute of Optoelectronic Materials and Technology South China Normal UniversityGuangzhou 510631China

A hierarchically 3D structured milled lamellar MoS2/nano-siIicon@carbon hybrid with medium capacity and long-term lifespan is designed by a green and scalable approach using ball milling process and spraydrying/ pyrolysis routes. The microspheres consist of low-content nano-silicon (20 wt%), milled lamellar M0S2 sheets and porous carbon skeletons. A mixture of silicon nanoparticles and M0S2 flakes serves as an inner core, while porous carbon pyrolyzed from petroleum pitch acts as a protective shell. The particular architecture affords robust mechanical support, abundant buffering space and enhanced electrical conductivity, thus effectively accommodating drastic volume variation during repetitive Li+ intercalation/ extraction. The Si/MoS2@C hybrid delivers a high initial discharge specific capacity of 1257.8 mA hg^-1 and exhibits a reversible capacity of 767.52 m A hg^-1 at a current density 100 mA g'1 after 250 cycles. Most impressively, the electrode depicts a superior long-cycling durability with a discharge capacity of 537.6 mA hg^-1 even after 1200 cycles at a current density of 500 m A g^-1. Meanwhile, the hybrid also shows excellent rate performance such as 388.1 mA h g^-1 even at a large current density of 3000 mA g^-1.

关键词： Si MoS2 Medium capacity Long-term lifespan Lithium ion batteries

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

Synthesis, Structural Characterization and Fluorescent Properties of a Cadmium Coordination Polymer with 4-Nitrophthalate and 1,4-Bis(imidazol-1-yl)-benzene

引用

Chinese Journal of Structural Chemistry 2020年第5期39卷 955-959页

作者：李秀梅潘亚茹刘博周实 Faculty of Chemistry Tonghua Normal UniversityTonghua 134002China Key Laboratory of Preparation and Applications of Environmental Friendly Materials(Jilin Normal University) Ministry of EducationChangchun 130103China

A new complex[Cd(nph)(bix)]n(1,H2nph=4-nitrophthalic acid,bix=1,4-bis(imidazol-1-yl)-benzene)has been successfully synthesized under hydrothermal *** structure has been characterized by elemental analysis,IR spectrum,TG,single-crystal and powder X-ray *** Cd^2+ion has a distorted octahedral environment with four O atoms from two nph ligands and two N atoms from two bix *** bix acts as a cis-conformation bridging ligand to link the neighboring[Cd2(nph)]subunit to form tetranuclear subunits with 42-ring,which are bridged again by bix ligands to yield a two-dimensional network *** was stabilized by C–H···O hydrogen bonding andπ-πinteractions,and extended into a 3D supramolecular ***,the luminescent properties of complex 1 have been investigated in the solid state.

关键词： hydrothermal synthesis crystal structure 4-nitrophthalic acid 1,4-bis(imidazol-1-yl)-benzene Cd(Ⅱ)complex

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

Numerical Study of Spray Dispersion in a Premixing Chamber for Low-NOx Engines

引用

Journal of Thermal Science 2000年第3期9卷 282-288页

作者： Jorge Barata Andre Silva (Universidade da Beira Interior, Aerospace Sciences Department, rua Marques d’Avila e Bolama, 6200 Covilha, Portugal ) Aerospace Sciences Department Universidade da Beira Interior Covilhã Portugal

The present work describes a numerical study of a confined two-phase flow under high-pressure conditions, typical of gas turbine combustors. An Eulerian frame was used for the gas phase together with a Lagrangian approach to describe the dispersed phase. The computational method was extended to high-pressure environments, which are more representative of the practical gas turbine operating conditions. The results are compared with experimental data, and revealed the ability of the model to increase the knowledge of the turbulent dispersion phenomena for this type of practical conditions (high pressure and confined flow).

关键词：二相流喷射扩散数字研究

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

Factors associated with H pylori epidemiology in symptomatic children in Buenos Aires,Argentina

引用

World Journal of Gastroenterology 2006年第33期12卷 5384-5388页

作者： Cinthia Goldman Andrés Barrado Mariana Janjetic Norma Balcarce Eduardo Cueto rua Masaru Oshiro María L Calcagno Margarita Martinez Sarrasague Julián Fuda Ricardo Weill Marcela Zubillaga Guillermo I Perez-Perez José Boccio Radioisotopes Laboratory and Laboratory of Stable Isotopes Applied to Biology and Medicine Physics Department School of Pharmacy and Biochemistry University of Buenos Aires Buenos Aires Argentina Laboratory of Stable Isotopes Applied to Biology and Medicine Physics Department School of Pharmacy and Biochemistry University of Buenos Aires Buenos Aires Argentina Gastroenterology Unit Hospital de nios "Superiora Sor María Ludovica" La Plata Argentina Health Center Di Matteo San Fernando Buenos Aires Argentina Mathematics Department School of Pharmacy and Biochemistry University of Buenos Aires Buenos Aires Argentina Agrarian Industries Department School of Agronomy University of Morón Buenos Aires Argentina Departments of Medicine and Microbiology New York University School of Medicine New York United States

AIM: To determine prevalence of H pylori infection in symptomatic children in Buenos Aires, Argentina, and to investigate factors associated with H pylori positivity. METHODS: A total of 395 children with upper gastrointestinal symptoms referred to the Gastroente-rology Unit of the Children Hospital “Sor Maria Ludovica” were evaluated for the presence of H pylori by the 13C-Urea Breath Test (13C-UBT). A questionnaire was applied to the recruited ***: Prevalence of H pylori infection was 40.0%in this population (mean age 9.97 ± 3.1 years). The factors associated with H pylori positivity were number of siblings (P < 0.001), presence of pet cats (P = 0.03) and birds (P = 0.04) in the household, and antecedents of gastritis among family members (P = 0.01). After multivariate analysis, number of siblings [Odds ratio (OR) = 1.39; 95% CI, 1.20-1.61] and contact with pet cats (OR = 1.76; 95% CI, 1.00-3.09) remained as variables associated with H pylori infection. CONCLUSION: The prevalence of H pylori infection in children with upper gastrointestinal symptoms in Argentina was similar to that reported in developed countries. Children from families with a higher crowding index and presence of pet cats have a higher risk of being colonized with H pylori.

关键词：流行病学幽门螺杆菌甲酮-钠除草剂阿根庭

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

汽车座椅体压分布变化规律和调节策略

引用

机械设计与研究 2023年第3期39卷 185-192页

作者：彭强袁欢郭巍周蒙蒙阮金伟武汉理工大学汽车工程学院武汉430070 武汉理工大学现代汽车零部件技术湖北省重点实验室武汉430070 武汉理工大学汽车零部件技术湖北省协同创新中心武汉430070

汽车座椅的舒适性和智能化广受消费者关注,为给座椅的舒适性和智能化设计提供理论指导,研究了汽车座椅调节对体压分布影响规律并基于体压变化规律提出了一种改善舒适性的座椅调节策略。以座椅调节参数为因子,以人体与座椅接触面的压力... 详细信息

汽车座椅的舒适性和智能化广受消费者关注,为给座椅的舒适性和智能化设计提供理论指导,研究了汽车座椅调节对体压分布影响规律并基于体压变化规律提出了一种改善舒适性的座椅调节策略。以座椅调节参数为因子,以人体与座椅接触面的压力特征参数为观测变量,设计了正交实验。利用方差分析——同时主成分分析方法(ANOVA-simultaneous component analysis,ASCA)对正交试验数据进行分析,得到了座椅调节对体压分布的影响规律。基于分析结果提出并验证了一种改善乘坐舒适性的座椅调节策略。研究发现:(1)座椅调节对体压分布有显著影响,其中靠背角度和滑轨位置相比座椅高度影响更大;(2)当靠背角度向后移动时,靠背压力变大且向四周移动,臀部压力变小;随着滑轨位置向后变化,座垫上的压力中心向臀部向腿部移动;(3)基于体压变化规律和理想体压分布提出的舒适性调节策略相比其他调节策略改善舒适性的效果更显著。

关键词：体压分布汽车座椅智能座舱 ASCA 舒适性

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

EFFECT OF PHOTOOXIDATION ON PHOTOLUMINESCENCE OF N, N'-DIPHENYL-N, N'-DI(M-TOLYL)-BENZIDINE AND RUBRENE CODOPED PMMA THIN FILMS

引用

Acta Metallurgica Sinica(English Letters) 2001年第6期14卷 441-447页

作者： YB. Hou, L.J. Meng and M.P. dos Santos ( Department of Physics, Minho University, Braga 4719, Portugal) ( Departamento de Fisica, Instituto Superior de Engenharia do Porto, rua de Sao Tome, 4200 Porto, Portugal) Dept. of Phys. Minho Univ. Braga 4719 Portugal

In this paper, the PMMA films doped with N,N'-diphenyl-N,N'-di(m-tolyl)-benzidine and rubrene were fabricated by spin coating, and the effect of photooxidation on the photoluminescence of the doped PMMA thin films was investigated. The results showed that under the irradiation of 350nm UV light, N,N'-diphenyl-N,N'-di(m-tolyl)-benzidine can sensitized rubrene and results in the enhancement in the photooxidation of rubrene. The effect of photooxidation on the photoluminescence from rubrene was more obvious. Both lifetime measurement and in situ measurement of photoluminescence showed that rubrene molecules exist in two chemical surroundings.

关键词： photoluminescence photooxidation

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

Bio-Oss~材料在上颌窦外提升中的组织学研究

引用

复旦学报（医学版） 2012年第6期39卷 585-589页

作者：郭雪华阮宏余优成复旦大学附属中山医院口腔科上海200032

目的通过临床组织形态学检测来评估运用100%Bio-Oss充填材料进行上颌窦外提升的实际成骨率。方法对12例上颌窦区的剩余垂直牙槽骨量不足(平均<3mm)的患者(平均56岁)进行上颌窦外提升术。术后6.5个月用Trephine牙钻分别从这12个术区钻... 详细信息

目的通过临床组织形态学检测来评估运用100%Bio-Oss充填材料进行上颌窦外提升的实际成骨率。方法对12例上颌窦区的剩余垂直牙槽骨量不足(平均<3mm)的患者(平均56岁)进行上颌窦外提升术。术后6.5个月用Trephine牙钻分别从这12个术区钻取骨质标本,且同期将12颗Bego种植钉植入取骨区。钻取标本参照Donath&Breuner(1982)的标准方法进行切片及染色处理。结果组织形态学分析测定表明样本的新骨生成量为4.33%～24.05%,平均12.56%±5.03%;Bio-Oss颗粒平均存余量为26.78%±6.19%;Bio-Oss颗粒表面平均有57.03%±8.07%的区域与新生骨组织有直接接触。二期手术时植入的12颗Bego种植钉负重1年后的存活率为100%。结论 Bio-Oss是一种理想的、成骨性能较稳定的骨替代材料,适合我国人群的使用。

关键词：上颌窦提升骨内种植钉骨移植术骨替代材料异种移植物

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

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：