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Method for rapid on-site identification of VOCs

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Journal of environmental Sciences 2009年第7期21卷 1005-1008页

作者： Justin D Fair William F Bailey Robert A Felty Amy e.gifford Benjamin Shultes Leslie H Volles Department of Chemistry University of Connecticut Storrs Connecticut 06269-3060 USA. INFICON Inc. 2 Technology Place East Syracuse New York 13057 USA

Rapid on-site identification of volatile organic compounds （VOCs） in ambient air is an important first step in remediation efforts. This study describes modification of a commercially available, portable GC/MS system and development of an analysis protocol for rapid （〈 3 min） sampling and identification of VOCs typically found at contaminated sites at the low ppbv level.

关键词： field analysis gas chromatograph mass spectrometer toxic industrial chemicals thermal desorption

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长命百岁不是梦

商业周刊（中文版） 2015年第5期 92-96,98页

作者： Bill gifford

上世纪e80年代仞，一天下午，苏伦·塞加尔（Suren Sehgal）从单位带回一个奇怪的包裹，将它塞进家中的冰柜。这个挤在一堆冰激凌中间的包裹覆着厚厚的塑料膜，上而用大写字母标明了“不能吃!”的字样。里面是几个装着白色糊状物的小玻... 详细信息

上世纪e80年代仞，一天下午，苏伦·塞加尔（Suren Sehgal）从单位带回一个奇怪的包裹，将它塞进家中的冰柜。这个挤在一堆冰激凌中间的包裹覆着厚厚的塑料膜，上而用大写字母标明了“不能吃!”的字样。里面是几个装着白色糊状物的小玻璃瓶——几十年后的今天诞生了一种最有希望的抗衰老药物，其基础就是瓶中所含的罕见细菌。1972年塞加尔在蒙特利尔一家名为艾尔斯特实验室（Ayerst Laboratories）的药厂工作时，首次从土壤样本中提取出了这种细菌，此后一直致力于对它的研究。

关键词： 80年代大写字母蒙特利尔塑料膜冰激凌抗衰老玻璃瓶实验室

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维管植物比较形态学

维管植物比较形态学

PNAS：科学焉已在蝙蝠机体中发现白血病病毒的史前祖先

作者： A.S.·福斯特(A.S. Foster) e.M.Jr.·小吉福德(e.M.Jr. gifford)

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现代生物医学进展 2017年第11期17卷 I0002-I0002页

作者： Helena Farkašová[a], Tomáš Hron[a], Jan Pačes[b] Pavel Hulva[c],[d] Petr Benda[c],[e] Robert James gifford[f], Daniel elleder[a], [a]Laboratory of Viral and Cellular Genetics Institute of Molecular Genetics The Czech Academy of Sciences Prague 14220 Czech Republic [b]Laboratory of Genomics and Bioinformatics Institute of Molecular Genetics The Czech Academy of Sciences Prague 14220 Czech Republic [c]Department of Zoology Charles University Prague 12844 Czech Republic [d]Department of Biology and ecology University of Ostrava Ostrava 71000 Czech Republic [e]Department of Zoology National Museum (Natural History) Prague 11579 Czech Republic [f]MRC-University of Glasgow Centre for Virus Research Glasgow G12 8TA United Kingdom

近日,一项刊登在国际杂志PNAS上的研究报告中,来自格拉斯哥大学和捷克科学院的研究人员通过研究在蝙蝠的基因组中发现了引发罕见类型白血病的病毒家族的古老DNA痕迹。

关键词：白血病病毒科学院蝙蝠祖先机体研究人员 DNA 基因组

Molecular phylogeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales)

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Fungal Diversity 2014年第1期64卷 1-99页

作者： D.Jean Lodge Mahajabeen Padamsee P.Brandon Matheny M.Catherine Aime Sharon A.Cantrell David Boertmann Alexander Kovalenko Alfredo Vizzini Bryn T.M.Dentinger Paul M.Kirk A.Martyn Ainsworth Jean-Marc Moncalvo Rytas Vilgalys ellen Larsson Robert Lücking Gareth W.Griffith matthew e.Smith Lorelei L.Norvell Dennis e.Desjardin Scott A.Redhead Clark L.Ovrebo edgar B.Lickey enrico ercole Karen W.Hughes Régis Courtecuisse Anthony Young Manfred Binder Andrew M.Minnis Daniel L.Lindner Beatriz Ortiz-Santana John Haight Thomas Læssøe Timothy J.Baroni József Geml Tsutomu Hattori Center for Forest Mycology Research Northern Research StationUSDA-Forest ServiceLuquilloPR 00773-1377USA Systematics Team Landcare Research231 Morrin RoadAuckland 1072New Zealand ecology&evolutionary Biology University of TennesseeKnoxvilleTN 37996-1610USA Department of Botany&Plant Pathology Purdue UniversityWest LafayetteIN 47907USA Science and Technology Universidad del TuraboGuraboPR 00778-3030USA Department of Bioscience Aarhus UniversityFrederiksborgvej 399DK-4000 RoskildeDenmark Komarov Botanical Institute of the Russian Academy of Sciences 2 Prof.Popov Str.St.Petersburg 197376Russia Dipartimento di Scienze della Vita e Biologia dei Sistemi Universitàdi TorinoViale P.A.Mattioli 2510125 TorinoItaly Mycology Royal Botanic GardensKewRichmondSurrey TW93DSUK Royal Ontario Museum 100 Queen’s ParkTorontoONCanada Biology Department Duke UniversityDurhamNC 27708-0338USA Biological&environmental Sciences University of GothenburgGöteborgSweden Science&eduaction Integrative Research&Collections(Botany)The Field Museum of Natural History1400 Lake Shore Dr.ChicagoIL 60605-2496USA University of Wales AberystwythCeredigion SY233DDUK Department of Plant Pathology University of FloridaGainesvilleFL 32611-0680USA Pacific Northwest Mycology Service 6720 NW Skyline BvdPortlandOR 97229-1309USA Department of Biology San Francisco State University1600 Holloway Ave.San FranciscoCA 94132USA National Mycological Herbarium(DAOM) Science and Technology BranchAgriculture&Agri-FoodsCanada960 Carling AvenueOttawaOntarioCanada ONT K1A 0C6 Department of Biology University of Central OklahomaEdmondOK 73034USA Department of Biology Bridgewater College402 E.College St.BridgewaterVA 22812USA Department of Botany Faculty of Pharmaceutical&Biological SciencesLilleFrance 100 Langton Road BlackbuttQld 4306Australia CBS Fungal Biodiversity Centre Evolutionary PhytopathologyInst.of the Royal Netherlands Academy of Arts&Sciences(KNAW)Uppsalalaan 83584 CT UtrechtThe Netherlands

Molecular phylogenies using 1–4 gene regions and information on ecology,morphology and pigment chemistry were used in a partial revision of the agaric family *** phylogenetically supported genera we recognize here in the Hygrophoraceae based on these and previous analyses are:Acantholichen,Ampulloclitocybe,Arrhenia,Cantharellula,Cantharocybe,Chromosera,Chrysomphalina,Cora,Corella,Cuphophyllus,Cyphellostereum,Dictyonema,eonema,Gliophorus,Haasiella,Humidicutis,Hygroaster,Hygrocybe,Hygrophorus,Lichenomphalia,Neohygrocybe,Porpolomopsis and Pseudoarmillariella.A new genus that is sister to Chromosera is described as *** were made at the ranks of subfamily,tribe,genus,subgenus,section and *** present three new subfamilies,eight tribes(five new),eight subgenera(one new,one new combination and one ***.),26 sections(five new and three new combinations and two ***.)and 14 subsections(two new,two ***.).Species of Chromosera,Gliophorus,Humidicutis,and Neohygrocybe are often treated within the genus Hygrocybe;we therefore provide valid names in both classification *** used a minimalist approach in transferring genera and creating new names and ***,we retain in the Hygrophoraceae the basal cuphophylloid grade comprising the genera Cuphophyllus,Ampulloclitocybe andCantharocybe,despite weak phylogenetic *** include Aeruginospora and Semiomphalina in Hygrophoraceae based on morphology though molecular data are *** lower hygrophoroid clade is basal to Hygrophoraceae s.s.,comprising the genera Aphroditeola,Macrotyphula,Phyllotopsis,Pleurocybella,Sarcomyxa,Tricholomopsis and Typhula.

关键词： Hygrophoraceae Fungi Revisionary systematics Nomenclatural revision Phylogenetics Pigment chemistry Lamellar trama construction Hymenial morphology ecology

Differential responses of carbon and water vapor fluxes to climate among evergreen needleleaf forests in the USA

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ecological Processes 2016年第1期5卷 91-107页

作者： Pradeep Wagle Xiangming Xiao Thomas e.Kolb Beverly e.Law Sonia Wharton Russell K.Monson Jiquan Chen Peter D.Blanken Kimberly A.Novick Sabina Dore Asko Noormets Prasanna H.Gowda Department of Microbiology and Plant Biology Center for Spatial AnalysisUniversity of OklahomaNormanOK 73019USA Institute of Biodiversity Science Fudan UniversityShanghai 200433China School of Forestry Northern Arizona UniversitylagstaffAZ 86011USA Department of Forest ecosystems and Society Oregon State UniversityCorvallisOR 97331USA Atmospheric Earth and Energy DivisionLawrence Livermore National LaboratoryLivermoreCA 94550USA School of Natural Resources and the environment and Laboratory of Tree Ring Research University of ArizonaTucsonAZ 85711USA Department of Geography Michigan State UniversityEast LansingMI 48824USA Department of Geography University of ColoradoBoulderCO 80309USA School of Public and environmental Affairs Indiana University-BloomingtonBloomingtonIN 47405USA Department of environmental Science Policyand ManagementUniversity of California BerkeleyBerkeleyCA 94702USA Department of Forestry and environmental Resources North Carolina State UniversityRaleighNC 27695USA USDA-ARS Grazinglands Research Laboratory El RenoOK 73036USA

Introduction:Understanding the differences in carbon and water vapor fluxes of spatially distributed evergreen needleleaf forests(eNFs)is crucial for accurately estimating regional or global carbon and water budgets and when predicting the responses of eNFs to current and future ***:We compared the fluxes of ten AmeriFlux eNF sites to investigate cross-site variability in net ecosystem exchange of carbon(Nee),gross primary production(GPP),and evapotranspiration(eT).We used wavelet cross-correlation analysis to examine responses of Nee and eT to common climatic drivers over multiple timescales and also determined optimum values of air temperature(T_(a))and vapor pressure deficit(VPD)for Nee and ***:We found larger differences in the Nee spectra than in the eT spectra across sites,demonstrating that spatial(site-to-site)variability was larger for Nee than for *** Nee and eT were decoupled differently across eNF sites because the wavelet cospectra between eT and climate variables were similar at all sites,while the wavelet cospectra between Nee and climate variables were higher(i.e.,closer coupling between Nee and climatic drivers)in semi-arid and Mediterranean sites than in other *** water use efficiency(eWUe)based on annual GPP/eT ranged from 1.3±0.18 to 4.08±0.62 g C mm^(−1) eT,while eWUe based on annual net ecosystem production(NeP)/eT ranged from 0.06±0.04 to 1.02±0.16 g C mm^(−1) eT)among *** of Nee and eT to T_(a) varied across climatic *** particular,for eNF sites in semi-arid and Mediterranean climates,the maximum Nee and eT occurred at lower ranges of T_(a) than in sites with warm and humid *** optimum T_(a) and VPD values were higher for eT than for Nee,and eT was less sensitive to high values of T_(a) and ***:Large spatial variability in carbon and water vapor fluxes among eNFs and large variations in responses of Nee and eT to major climate variables among climatic zones necessitate sub-

关键词： Drought ecosystem water use efficiency Net ecosystem CO_(2)exchange Spatial variability Wavelet cross-correlation analysis

载脂蛋白e基因型影响老年人心输出量与认知功能的相关性

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中华高血压杂志 2019年第10期27卷 917-917页

作者：陈嘉睿刘莉 Bown CW Liu D Osborn Ke Gupta DK Mendes LA Pechman KR Hohman TJ Wang TJ gifford KA Jefferson AL

心输出量的轻微下降与低脑血流量相关,尤其是在阿尔茨海默病病理改变的首发区域。载脂蛋白e(apolipoprotein e,APOe)-ε4是阿尔茨海默病的一个遗传易感性危险因素,同时能减轻血管损伤。该研究旨在探讨携带APOe-ε4基因是否影响心输出量... 详细信息

心输出量的轻微下降与低脑血流量相关,尤其是在阿尔茨海默病病理改变的首发区域。载脂蛋白e(apolipoprotein e,APOe)-ε4是阿尔茨海默病的一个遗传易感性危险因素,同时能减轻血管损伤。该研究旨在探讨携带APOe-ε4基因是否影响心输出量与认知功能的相关性。研究人员纳入范德比尔特记忆老化项目中无临床脑卒中和痴呆的参与者306例,平均年龄(73±7)岁,其中42%为女性。

关键词：脑血流量阿尔茨海默病心输出量轻微下降载脂蛋白e 认知功能血管损伤遗传易感性

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钾素营养对库强度和持续期的影响

麦类作物学报 1986年第3期 37-38页

作者： H.e.Haeder 徐强

多数作物制造光合产物的器官(源)不同于贮存光合产物的器官(库).产量生理学的中心问题是讨论源和库对产量形成的重要性(gifford等,1973,Stoy,1975).某些情况下,库比源对产量形成的作用更大(Prommer,1977),但最近认为,二者具有相等的重要... 详细信息

多数作物制造光合产物的器官(源)不同于贮存光合产物的器官(库).产量生理学的中心问题是讨论源和库对产量形成的重要性(gifford等,1973,Stoy,1975).某些情况下,库比源对产量形成的作用更大(Prommer,1977),但最近认为,二者具有相等的重要性(Stoy,1977;Tollenaar,1977).据报道,钾素能提高叶片的光合速率,加快同化物由韧皮部筛管(Mengel和Haeder,1976和1977)向籽粒和块茎中的运输.Forster(1976)认为,库可分为三个组成部分,即库潜力(每穗粒数)、库强度(灌浆速度)和库持续期(灌浆期长短).其中每穗粒数在遗传上基本是固定的.

关键词：钾素营养植株矿物质营养籽粒淀粉籽粒灌浆持续期

TIle ReLATIONSHIP BeTWeeN HYDROMORPHOLOGY AND MACROPHYTe COMMUNITY STRUCTURe IN UK-IMPLICATIONS FOR eCOLOGICAL ASSeSSMeNT

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TIlE RELATIONSHIP BETWEEN HYDROMORPHOLOGY AND MACROPHYTE COM...