检索结果-南通市图书馆

草原与草坪 1981年第2期 13-18页

作者： j·Dale R.E.hughes 姚彦臣

斯诺登尼亚(Snowdonia)山区草地早已用于绵羊的放牧。通过在诸试验范围内调查表明了绵羊分布的格式及其与环境因素,特别是土壤母质和植被类型的关系。一、导言绵羊在斯诺登尼亚是占优势的放牧家畜,它们对山地生态系统日益增强的影响始

关键词：绵羊地段群体密度种群密度绵羊群羔羊绵羊单位斯诺登尼亚

The independent eye :.contemporary British art from the collection of Samuel and Gabrielle Lurie

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Which metrics drive macroinvertebrate drift in neotropical sky island streams?

2010年

作者： edited by Eleanor hughes and Angus Trumble.

ISBN: (纸本)9780300171396

This beautifully illustrated book takes readers inside Samuel and Gabrielle Lurie's dynamic private collection of contemporary British art, an intended gift to the Yale Center for British Art. Spanning the past four decades, the collection includes major works by Ian Stephenson, Patrick Caulfield, and john Walker, as well as important prints by Howard Hodgkin and R.B. Kitaj. At its core are 52 pai

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来源：畅想之星图书光盘版（南... 评论

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Water Biology and Security 2023年第1期2卷 1-8页

作者： Marcos Callisto Diego M.P.Castro Marden S.Linares Laryssa K.Carvalho jose E.L.Barbosa Robert M.hughes Universidade Federal de Minas Gerais Instituto de Ci^encias BiologicasDepartamento de GeneticaEcologia e Evoluç~aoLaboratorio de Ecologia de BentosCP 486Av.Ant^onio Carlos6627PampulhaBelo HorizonteMGCEP 31270-901Brazil Laboratorio de Ecologia Aquatica Departamento de BiologiaCentro de Ci^encias.Biologicas e da SaúdeUniversidade Estadual da ParaíbaAv.das Bananeiras351BodocongoCampina GrandePBCEP 58429-500Brazil Amnis Opes Institute 2895 SE GlennCorvallisOR97333-2169USA Department of Fisheries Wildlife&Conservation Sciences104 Nash HallCorvallisOR97331-3803USA Universidade Federal de Lavras Departamento de Ecologia e Conservaç~aoPrograma de Pos Graduaç~ao em Ecologia AplicadaCEP 37200-900LavrasMinas GeraisBrazil

Despite long-standing interest,the mechanisms driving aquatic macroinvertebrate drift in tropical streams remain poorly ***,the objective of this study was to evaluate which environmental metrics drive macroinvertebrate drift in neotropical sky island *** evaluated whether altitude,the abundance of food resources,and variations in water quality influenced macroinvertebrate drift density,diversity,richness,and functional feeding *** hypothesis was developed to test whether increased altitude,lower food availability(particulate organic matter),and discharge would increase the density,taxonomic richness,and diversity of drifting *** headwater stream sites were sampled in the rainy and dry seasons in the Espinhaço Meridional Mountain Range(EMMR)of southeast *** were collected using drift nets deployed from 5:00 *** 8:00 *** abundance of food resources was assessed through estimates of coarse(CPOM)and fine(FPOM)particulate organic matter,and primary *** availability was an important explanatory variable for Gathering-Collectors and Scrapers,Altitude was important for Shredders and Predators,and Filtering-Collectors were linked to water discharge,suggesting that functional group drift masses were linked to different ecosystem *** temperature,conductivity,dissolved oxygen,current velocity,FPOM biomass and microbasin elevation range exerted little influence on macroinvertebrate *** taxa composition,this study also found that Baetidae and Leptohyphidae(Ephemeroptera)and Chironomidae and Simuliidae(Diptera)were the most abundant groups drifting.

关键词： Biodiversity conservation Stream processes Macroinvertebrate functional groups Water quality Serra do espinhaço

草地贪夜蛾对新入侵地区蝙蝠超声波胁迫的行为反应和转录组分析

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生态学报 2024年第20期44卷 8984-8995页

作者：石林云张亚宁江廷磊杨采青孙成 Alice Catherine hughes 张爱兵首都师范大学生命科学学院北京100048 东北师范大学吉林省动物资源保护与利用重点实验室长春130117 香港大学生物科学学院中国香港特别行政区999077

草地贪夜蛾Spodoptera frugiperda是一种极具破坏性的入侵物种,对粮食作物构成重大威胁。蝙蝠是鳞翅目昆虫的重要天敌之一,控制着鳞翅目昆虫的生存和数量。为探究草地贪夜蛾在到达新的入侵地区后,是否以及如何对入侵地的食虫蝙蝠发出的... 详细信息

草地贪夜蛾Spodoptera frugiperda是一种极具破坏性的入侵物种,对粮食作物构成重大威胁。蝙蝠是鳞翅目昆虫的重要天敌之一,控制着鳞翅目昆虫的生存和数量。为探究草地贪夜蛾在到达新的入侵地区后,是否以及如何对入侵地的食虫蝙蝠发出的超声波做出响应,研究首先观察并记录了草地贪夜蛾在暴露于入侵地蝙蝠超声波前后的行为变化,然后以正常环境中的成虫作为对照,对暴露于蝙蝠超声0.5、3、12、24、48小时和72小时的一日龄雄性草地贪夜蛾转录组进行比较分析。转录组的综合分析为研究蝙蝠超声信号对草地贪夜蛾产生的分子变化提供有价值的信息。行为结果表明,在草地贪夜蛾听觉范围内的入侵地蝙蝠超声波可以显著降低蛾类的行为活动,表明这些信号可能在成虫的行为中起着至关重要的作用。转录组分析表明,蝙蝠超声胁迫诱导了草地贪夜蛾体内广泛的基因表达变化,与对照组相比,不同时长的超声刺激下共鉴定出2389个显著上调基因和2491个显著下调基因,将在多个时间点均显著上调或下调的521个基因定义为草地贪夜蛾对蝙蝠超声响应的关键基因。对这些关键基因的GO和KEGG富集分析进一步揭示了蝙蝠超声胁迫对草地贪夜蛾的不同影响过程,结果显示215个上调基因与神经信号传递、声音感知、听觉受体细胞发育、氧化应激和恐惧反应等过程高度相关,306个下调基因主要富集在各种能量代谢途径和生物合成过程中。通过qRT-PCR实验验证了转录组分析结果的可靠性。研究为草地贪夜蛾应对蝙蝠超声胁迫的生物学和分子机制提供了新的见解,并为今后开发更有效、更环保的方法控制鳞翅目害虫提供更多依据。

关键词：草地贪夜蛾入侵物种超声波胁迫行为活动转录组

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空气污染物的采样、化学特征与致变实验

环境科学与管理 1981年第12期 11-20页

作者： T.j.hughes E.PELLIZZARI 赵振华

本文讨论了空气污染的来源和类型,空气样品的采集、分离和化学分析方法,以及对这些空气样品及其组份能够进行定量致变试验的体外生物试验方法。对应用生物试验检测致变活性的原因作了评论, 这些实验包括紫露草属植物试验(现场实验)和Ame... 详细信息

本文讨论了空气污染的来源和类型,空气样品的采集、分离和化学分析方法,以及对这些空气样品及其组份能够进行定量致变试验的体外生物试验方法。对应用生物试验检测致变活性的原因作了评论, 这些实验包括紫露草属植物试验(现场实验)和Ames的鼠沙门氏突变细菌试验(实验室方法)。对样品粒度的大小、空气样品的复杂性和人工效应的产生等问题进行了讨论。评论了把生物学和化学方法结合起来对空气污染进行分析的新技术,对进一步研究的方向提出了建议。对空气颗粒物质和挥发性物质的采样方法,以及用溶剂萃取法将颗粒物质进一步分离成不同的化学组份(即酸性组份、碱性组份、PNA、PN、NPN等组份)进行了综述。也介绍了用GC/MS/电子计算机系统鉴定单个化合物的化学方法,以及对挥发相组份的采样与试验方法。对比了紫露草属试验和Ames试验的结果,某些挥发相有机物对紫露草属植物的雄蕊有很高的致变性。空气颗粒物及其萃取物的细菌突变试验结果表明:酸性组份、碱性组份和PNA组份是致变活性的主要部分。讨论了在空气颗粒萃取物各组份中鉴定出的不同类型的致变剂。推荐了用化学分析和生物筛选体系相结合的方法进一步研究有毒的空气污染物。

关键词：致变物大气飘尘空气颗粒物大气污染物颗粒物质气溶胶大气微粒分散体系样品量城市大气化合物

薄膜包衣技术在保护引湿性紫锥菊提取物中的应用

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中国药学杂志 2008年第9期43卷 714-716页

作者：于海春 Kevin hughes Nevin Crake Tom Farrell Ngoc Do 卡乐康包衣技术有限公司上海201108

由于大多数现代中药提取物采用醇-水提取法制备,使其具有易引湿性,故制备成固体制剂后使其在常温常湿条件下保持稳定比较困难。笔者对用于灌装硬胶囊的活性药物微丸通过采用上药后防潮薄膜包衣技术,使其保持稳定的制备工艺进行评价。[... 详细信息

由于大多数现代中药提取物采用醇-水提取法制备,使其具有易引湿性,故制备成固体制剂后使其在常温常湿条件下保持稳定比较困难。笔者对用于灌装硬胶囊的活性药物微丸通过采用上药后防潮薄膜包衣技术,使其保持稳定的制备工艺进行评价。[第一段]

关键词：微丸欧巴代包衣

避孕套使用与青年女性生殖道人乳头瘤病毒感染风险

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世界核心医学期刊文摘（妇产科学分册） 2006年第10期2卷 1-2页

作者： Winer R.L. hughes j.P. 张旸 University of Washington HPV Research Group Lake Union Place 1914 N. 34th St. Seattle WA 98103 United States Dr.

BACKGROUND: To evaluate whether the use of male condoms reduces the risk of male-to-female transmissi on of human papillomavirus(HPV) infection, longitudinal studies explicitly designed to evaluate the temporal relationship between condom use and HPV infection are needed. METHODS: We followed 82 female university students who reported their first intercourse with a male partner either during the study period or within two weeks before enrollment. Cervical and vulvovaginal samples for HPV DNA testing and Papanicolaou testing were collected at gynecologic examinations every four months. Every two weeks, women used electronic diaries to record information about their daily sexual behavior. Cox proportional-hazards models were used to evaluate risk factors for HPV infection. RESULTS: The incidence of genital HPV infection was 37.8 per 100 patient-years at risk among women whose partners used condoms for all instances of intercourse during the eight months before testing, as compared with 89.3 per 100 patient-years at risk in women whose partners used condoms less than 5 percent of the time(adjusted hazard ratio, 0.3; 95 percent confidence interval, 0.1 to 0.6, adjusted for the number of new partners and the number of previous partners of the male partner). Similar associations were observed when the analysis was restricted to high-risk and low-risk types of HPV and HPV types 6, 11, 16, and 18. In women reporting 100 percent condom use by their partners, no cervical squamous intraepithelial lesions were detected in 32 patient-years at risk, whereas 14 incident lesions were detected during 97 patient-years at risk among women whose partners did not use condoms or used them less consistently. CONCLUSIONS: Among newly sexually active women, consistent condom use by their partners appears to reduce the risk of cervical and vulvovaginal HPV infection.

关键词：感染风险性伴人乳头瘤病毒巴氏涂片外阴阴道鳞状上皮内病变模型评价设计评价纵向研究月行

National preparedness survey of pediatric intensive care units with simulation centers during the coronavirus pandemic

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World journal of Critical Care Medicine 2020年第5期9卷 74-87页

作者： Kamal Abulebda Rami A Ahmed Marc A Auerbach Anna M Bona Lauren E Falvo Patrick G hughes Isabel T Gross Elisa j Sarmiento Paul R Barach Department of Pediatrics Division of Critical CareIndiana University School of MedicineRiley Hospital for Children at Indiana University HealthIndianapolisIN 46202United States Department of Emergency Medicine School of MedicineIndiana UniversityIndianapolisIN 46202United States Department of Pediatrics Division of Pediatrics Emergency MedicineYale University School of MedicineNew HavenCT 06504United States Department of Integrated Medical Science Florida Atlantic UniversityBoca RatonFL 33431United States Department of Emergency Medicine Yale University School of MedicineNew HavenCT 06504United States Department of Pediatrics Wayne State University School of MedicineDetroitMI 48202Jefferson College of Population HealthPhiladelphiaPA19107United States

The coronavirus disease pandemic caught many pediatric hospitals unpreparedand has forced pediatric healthcare systems to scramble as they examine and planfor the optimal allocation of medical resources for the highest priority *** is limited data describing pediatric intensive care unit (PICU) preparednessand their health worker *** describe the current coronavirus disease 2019 (COVID-19) preparedness effortsamong a set of PICUs within a simulation-based network *** A cross-sectional multi-center national survey of PICU medical director(s) fromchildren’s hospitals across the United States. The questionnaire was developedand reviewed by physicians with expertise in pediatric critical care, disasterreadiness, human factors, and survey development. Thirty-five children’shospitals were identified for recruitment through a long-established nationalresearch network. The questions focused on six themes: (1) PICU and medicaldirector demographics;(2) Pediatric patient flow during the pandemic;(3)Changes to the staffing models related to the pandemic;(4) Use of personalprotective equipment (PPE);(5) Changes in clinical practice and innovations;and(6) Current modalities of training including *** report on survey responses from 22 of 35 PICUs (63%). The majority of PICUswere located within children’s hospitals (87%). All PICUs cared for pediatricpatients with COVID-19 at the time of the survey. The majority of PICUs (83.4%)witnessed decreases in non-COVID-19 patients, 43% had COVID-19 dedicatedunits, and 74.6% pivoted to accept adult COVID-19 patients. All PICUsimplemented changes to their staffing models with the most common changesbeing changes in COVID-19 patient room assignment in 50% of surveyed PICUsand introducing remote patient monitoring in 36% of the PICU units. Ninety-fivepercent of PICUs conducted training for donning and doffing of enhanced *** 6 months into the pandemic, one-third of PICUs across the U

关键词： COVID-19 Pediatric intensive care unit Simulation Practice innovations Training Preparedness

Genetic Diversity and Lineage Based on SSR Markers of Two Genomic Resources among <i>Trifolium</i>Collections Held within the Australian Pastures Genebank

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Open journal of Genetics 2019年第1期9卷 1-14页

作者： Devendra R. Malaviya Harsh Raman Brian S. Dear Rosy Raman Ajoy K. Roy Pankaj Kaushal Amaresh Chandra Steve j. hughes ICAR—Indian Institute of Sugarcane Research Lucknow India Graham Centre for Agricultural Innovation Wagga Wagga Australia ICAR—Indian Grassland and Fodder Research Institute Jhansi India ICAR—National Institute of Biotic Stress Management Raipur India South Australian Research & Development Institute Urrbrae Australia

Trifolium alexandrinum, an important forage legume, suffers from narrow genetic base. The present investigation was envisaged to reveal the inter- and intra-species genetic diversity and lineage among 64 accessions, representing a global collection, of T. alexandrinum;it’s two probable progenitor species (T. salmoneum and T. subterraneum) and the three genetically distant species (T. repens, T. vesiculosum, T. michelianum). A set of Simple Sequence Repeats (SSR) primer-pairs developed from T. alexandrinum have shown to amplify alleles across the species under study, suggesting utility of the newly developed resource for assessing molecular diversity among Trifolium species. These SSRs markers together with previously reported SSRs, derived from T. repens, enabled to reveal high intra-species polymorphism in T. alexandrinum and successfully discriminate different species investigated in this study. The diverse accessions determined herein provide a superior resource for further breeding of T. alexandrinum. High allelic similarity of T. alexandrinum with T. subterraneum and T. salmoneum indicated close relatedness among the species, suggesting polyphyletic evolution of T. alexandrinum.

关键词： Egyptian Clover Evolution Genetic Resource Molecular Diversity

罗马尼亚旨在扭转疏于维护的铁路网络的总体规划

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国外铁道车辆 2018年第5期55卷 7-9,29页

作者： Murray hughes 季中

介绍了罗马尼亚铁路面临的困境,以及政府制定的旨在扭转疏于维护的铁路网络的总体规划。

关键词：铁路规划罗马尼亚