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11篇 您的检索式:作者名="Jennings LE"
    题名 作者 年代 出处 被引量
1北欧湖泊的重金属调查:浓度、地理模式及与临界界限的关系显示文摘1995年秋天,北欧各国同时对本国的湖泊进行了调查,包括俄罗斯西北的科拉半岛。在大约3000个湖泊中,被调查的11种金属(铅、镉、砷、锌、铜、镍、钴、铁、锰、铬、钒)一般浓度较低,并具有明确的地理模式。对于铅、镉、锌和一定程度上钴的分布,远程迁移的空气污染带来的直接和间接影响是最重要的因素。湖中总有机碳(TOC)浓度对于铁和锰,并在一定程度上对于砷、铬和钒是重要的。对于铜和镍,基岩地质概况是最重要的控制因素,但在科拉半岛很多冶炼厂周围地区是个例外,在那里由于当地空气传播的污染,湖泊中铜和镍的浓度很高。基岩和地表的地质概况对于控制砷、钴、铬和钒的浓度也是重要的因素。调查结果表明在北欧国家湖泊中重金属污染在区域尺度上是一个较轻微的生态问题。Brit Lisa Skjelkvle Tom Andersen Eirik Fjeld Jaakko Mannio Anders Wilander Kjell Johansson Jens Peder Jensen Tatyana Moiseenko 孙学飞 2001AMBIO-人类环境杂志2001,30,1:11
21995年北欧湖泊调查——芬兰、挪威、瑞典、丹麦、俄罗斯的科拉和科雷利亚地区、苏格兰和威尔士显示文摘在1995年秋,芬兰、挪威和瑞典采用规定的湖泊选择标准和分析程序开始了一项北欧湖泊的联合调查。尔后,该项目扩大到包括丹麦、俄罗斯的科拉(Kola)地区和科雷利亚(Karelia)地区、苏格兰和威尔士。调查覆盖了约1300 000km^2的地域;大约占欧洲总面积的13%,若不包括俄罗斯欧洲部分则占欧洲总面积的28%。在所调查区域内>0.04km^2的湖泊总数约为 155 000个,对其中3.7%的湖泊(5690个)进行了采样。湖泊密度大约为每9km^2一个湖,采样密度为每244km^2一个湖。对北部欧洲湖泊化学的首次常规评价表明,除了丹麦的湖泊以外,其他湖泊都以低离子浓度水(淡水)为特征,伴有低浓度的营养物质——氮和磷。由于在水文、降水化学、土壤覆盖及植被等方面的差异,各国的湖水化学有所不同。从西部的挪威、苏格兰和威尔士到东部的芬兰和科雷利亚,存在着降水由高到低(从5000mm/a到300mm/a)和从山区瘠薄和质地不匀的土壤到森林地区深厚土壤的逐渐变化。这两个因子都在湖水化学上有所反映,西部地区的碱基离子(basecation)(Ca、Mg、Na、K)浓度、碱度(HCO_3^-)和总有机碳(TOC)均低于东部地区。在苏格兰和威尔士湖水里的高水平TOC是一例外。瑞典、芬兰、苏格兰和威尔士的碱基离子中位值三倍于挪威的,TOC浓度变化更大。丹麦湖泊受基岩矿物学的影响不同于其它国家,而且在其集水区中农业活动的强度更大。丹麦湖泊的离子浓度一般要高得多,氮和磷的浓度也很高。在芬兰、挪威、瑞典以及俄罗斯的科拉和科雷利亚,50%以上的湖泊硫酸度(sulfur acidi-ty)临界负荷(CL)值很低,CL<60meq/m^2·a;而在苏格兰、威尔士和丹麦CL值低的湖泊极少。按目前的硫负荷计算,超过硫酸度临界负荷的湖泊数量百分比在挪威最高,为27%;在俄罗斯的科拉、瑞典和芬兰,分别为17%、9%和9%;在苏格兰仅为1%;而在威尔士却有24%。总的来说,超过硫酸度临界负荷的湖泊之和大约为22 000个,占北部欧洲湖泊总数的14%。ArneHenriksen BritLisaSkjelvle Jaakkko Mannio Anders Wilander Ron Harriman Chris Curtis Jens Peder Jensen Erik Fjeld Tatyana Moiseenko 沈英娃 1998人类环境杂志1998,27,2:2
3Plk4- induced centriole biogenesis in human cells 显示文摘Kleylein-Sohn Julia Westendorf Jens Le Cleeh Mikael 2007Developmental cell2007,13,2:1
4Cost of pelvic organ prolapse surgery in the United States显示文摘Subak LI Waet Jen LE Vanden Eeden S 2001Obstet Gynecol2001,98,:1
5Vascular clips versus ligatures in thyroid surgery—results of a multicenter randomized controlled trial (CLIVIT Trial)显示文摘Markus K. Diener Christoph M. Seiler Moritz Frankenberg Kathleen Rendel Silke Schüle Katja Maschuw Stefan Riedl Jens C. Rückert Christian Eckmann Uwe Scharlau Alexis Ulrich Thomas Bruckner Hanns-Peter Knaebel Matthias Rothmund Markus W. Büchler 2012Langenbeck’s Archives of Surgery2012,,7:1
6'Two is better than one' - Probes for dual - modality molecular imaging 显示文摘Jennings LE Long NJ 2009Chem Commun2009,24,:1
7Adsorption ofvapor-phase elemental mercury (Hg°) and mercurychloride (HgCk) with innovative composite activatedcarbons impregnated with Na2S and in differentsequences 显示文摘LE L R HUNG C H JEN Y S 2013Chemical Engineering Journal2013,229,:1
8Two is better than one' probes for dual-modality molecular imaging显示文摘Jennings LE Long NJ 2009Chem Commun2009,24,5:1
9Adsorption of vapor-phase ele- mental mercury ( Hg0 ) and mercury chloride ( HgC12 ) with inno- vative composite activated earbons impregnated with Na2S and S0 in different sequences 显示文摘Le L R Hung C H Jen Y S 2013Chemical Engineering Journal2013,229,:1
10Entrepreneurship and Growth in Emerging Mini-dragon Economies: A South-East Asia Perspective显示文摘Alex Maritz Viet Le Simon Masli Anton de Waal Bert Verhoeven Shieh, Chich Jen 2013Chinese Business Review2013,12,1:0
11Evaluating the yield of systematic screening for tuberculosis among three priority groups in Ho Chi Minh City,Viet Nam显示文摘Background: In order to end tuberculosis(TB),it is necessary to expand coverage of TB care services,including systematic screening initiatives.However,more evidence is needed for groups among whom systematic screening is only conditionally recommended by the World Health Organization.This study evaluated concurrent screening in multiple target groups using community health workers(CHW).Methods:: In our two-year intervention study lasting from October 2017 to September 2019,CHWs in six districts of Ho Chi Minh City,Viet Nam verbally screened three urban priority groups:(1)household TB contacts;(2)close TB contacts;and(3)residents of urban priority areas without clear documented exposure to TB including hotspots,boarding homes and urban slums.Eligible persons were referred for further screening with chest radiography and follow-on testing with the Xpert MTB/RIF assay.Symptomatic individuals with normal or without radiography results were tested on smear microscopy.We described the TB care cascade and characteristics for each priority group,and calculated yield and number needed to screen.Subsequently,we fitted a mixed-effect logistic regression to identify the association of these target groups and secondary patient covariates with TB treatment initiation.Results: We verbally screened 321020 people including 24232 household contacts,3182 social and close contacts and 293606 residents of urban priority areas.This resulted in 1138 persons treated for TB,of whom 85 were household contacts,39 were close contacts and 1014 belonged to urban priority area residents.The yield of active TB in these groups was 351,1226 and 345 per 100000,respectively,corresponding to numbers needed to screen of 285,82 and 290.The fitted model showed that close contacts[adjusted odds ratio(aOR)=2.07;95%CI:1.38–3.11;P<0.001]and urban priority area residents(aOR=2.18;95%CI:1.69–2.79;P<0.001)had a greater risk of active TB than household contacts.Conclusions: The study detected a large number of unreached persons with TB,but most of them were not among persons in contact with an index patient.Therefore,while programs should continue to optimize screening in contacts,to close the detection gap in high TB burden settings such as Viet Nam,coverage must be expanded to persons without documented exposure such as residents in hotspots,boarding homes and urban slums.Luan Nguyen Quang Vo Andrew James Codlin Rachel Jeanette Forse NgaThuy Nguyen Thanh Nguyen Vu Giang Truong Le Vinh Van Truong Giang Chau Do Ha Minh Dang Lan Huu Nguyen Hoa Binh Nguyen Nhung Viet Nguyen Jens Levy Knut Lonnroth SBertel Squire Maxine Caws 2020Infectious Diseases of Poverty2020,9,6:0
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