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12篇 您的检索式:作者名="Johan Larsson"
    题名 作者 年代 出处 被引量
1远洋系统中的持久性有机污染物(POPs)显示文摘有几项研究表明水生生物群中富营养化与持久性有机污染物(POPs)的吸收之间存在着相互作用。其主要概念是:由于营养物的过度排放,水生生态系统中生物量与生产增加,引起了一系列的变化,从而造成初级生产者(浮游植物)对POPs的吸收减少。其影响还会波及不同营养级的消费者。这一系列的变化可以间接地通过有机物沉淀的增加起作用,使污染物向底层的沉降流量增加,从而使污染物在底层被有机沉淀物所结合。这一系列的变化还会直接地起作用,作为'生长稀释'作用的后果,生长快速的浮游植物对POPs的吸收减少,使污染物在食物网中的转移减少。这种作用也可能是食物网结构改变的结果,而食物网结构的变化在寡营养型和富营养型的生态系统中极为不同。本文运用现有的有关不同营养状况的水生系统中POPs行为的知识,对波罗的海的富营养化与污染物之间的相互作用进行了讨论。波罗的海受到POPs的重度污染并正在富营养化是众所周知的。对湖泊进行调查的结果用于对实验室研究结果和在波罗的海的现场研究结果进行比较。Per Larsson Agneta Andersson Dag Broman Johan Nordbck Erik Lundberg 李应仁 2000AMBIO-人类环境杂志2000,29,4:3
2Is smoking a risk factor for collagenous colitis?显示文摘Lina Vigren Klas Sj?berg Cecilia Benoni Curt Tysk Johan Bohr Anders Kilander Lasse Larsson Magnus Str?m Henrik Hjortswang 2011Scandinavian Journal of Gastroenterology2011,,11:1
3Plasma Parathyroid Hormone and the Risk of Cardiovascular Mortality in the Community显示文摘Emil Hagstr?m Per Hellman Tobias E. Larsson Erik Ingelsson Lars Berglund Johan Sundstr?m H?kan Melhus Claes Held Lars Lind Karl Micha?lsson Johan ?rnl?v 2009Circulation2009,,21:1
4Colonic perforation in collagenous colitis: an unusual complication显示文摘Johan Bohr Lars-G?ran Larsson Sune Eriksson Gunnar J?rnerot Curt Tysk 2005European Journal of Gastroenterology & Hepatology2005,,1:1
5Autonomous underground tramming for center-articulated vehicles 显示文摘Joshua Marshall Timothy Barfoot Johan Larsson 2008Journal of Field Robotics2008,25,67:1
6Improving ITS sequence data for identification of plant pathogenic fungi显示文摘Plant pathogenic fungi are a large and diverse assemblage of eukaryotes with substantial impacts on natural ecosystems and human endeavours.These taxa often have complex and poorly understood life cycles,lack observable,discriminatory morphological characters,and may not be amenable to in vitro culturing.As a result,species identification is frequently difficult.Molecular(DNA sequence)data have emerged as crucial information for the taxonomic identification of plant pathogenic fungi,with the nuclear ribosomal internal transcribed spacer(ITS)region being the most popular marker.However,international nucleotide sequence databases are accumulating numerous sequences of compromised or low-resolution taxonomic annotations and substandard technical quality,making their use in the molecular identification of plant pathogenic fungi problematic.Here we report on a concerted effort to identify high-quality reference sequences for various plant pathogenic fungi and to re-annotate incorrectly or insufficiently annotated public ITS sequences from these fungal lineages.A third objective was to enrich the sequences with geographical and ecological metadata.The results-a total of 31,954 changes-are incorporated in and made available through the UNITE database for molecular identification of fungi(http://gffzz7cc2bea597fa4d6chpoo5nf6xwp6u6opv.ffgz.tsg.suse.edu.cn),including standalone FASTA files of sequence data for local BLAST searches,use in the next-generation sequencing analysis platforms QIIME and mothur,and related applications.The present initiative is just a beginning to cover the wide spectrum of plant pathogenic fungi,and we invite all researchers with pertinent expertise to join the annotation effort.R.Henrik Nilsson Kevin D.Hyde Julia Pawlowska Martin Ryberg Leho Tedersoo Anders Bjornsgard Aas Siti A.Alias Artur Alves Cajsa Lisa Anderson Alexandre Antonelli A.Elizabeth Arnold Barbara Bahnmann Mohammad Bahram Johan Bengtsson-Palme Anna Berlin Sara Branco Putarak Chomnunti Asha Dissanayake Rein Drenkhan Hanna Friberg Tobias Guldberg Froslev Bettina Halwachs Martin Hartmann Beatrice Henricot Ruvishika Jayawardena Ari Jumpponen Havard Kauserud Sonja Koskela Tomasz Kulik Kare Liimatainen Bjorn D.Lindahl Daniel Lindner Jian-Kui Liu Sajeewa Maharachchikumbura Dimuthu Manamgoda Svante Martinsson Maria Alice Neves Tuula Niskanen Stephan Nylinder Olinto Liparini Pereira Danilo Batista Pinho Teresita M.Porter Valentin Queloz Taavi Riit Marisol Sánchez-García Filipe de Sousa Emil Stefańczyk Mariusz Tadych Susumu Takamatsu Qing Tian Dhanushka Udayanga Martin Unterseher Zheng Wang Saowanee Wikee Jiye Yan Ellen Larsson Karl-Henrik Larsson Urmas Koljalg Kessy Abarenkov 2014Fungal Diversity2014,,4:1
7Model-based optimization of economical grade changes for the Borealis Borstar ? polyethylene plant显示文摘Per-Ola Larsson Johan ?kesson Niclas Carlsson Niklas Andersson 2012Computers and Chemical Engineering2012,,:1
8Mobile robot localization: integrating measurements from a time-of-flight laser显示文摘LARSSON Uif FORSBERG Johan WERNERSSON Ake 1996IEEE Transactions on Industrial Electronics1996,43,3:1
9Small-bowel transplantation in the rat with a nonsuture cuff technique显示文摘Johan Wallander Anders Holtz Erik Larsson Bengt Gerdin G?ran L?ckgren Gunnar Tufveson 1988Transplant International1988,,3:1
10Altered MicroRNA profiles in Bronchoalveolar Lavage Fluid Exosomes in Asthma显示文摘Bettina Lev?nen Nirav R. Bhakta Patricia Torregrosa Paredes Rebecca Barbeau Stefanie Hiltbrunner Joshua L. Pollack C. Magnus Sk?ld Magnus Svartengren Johan Grunewald Susanne Gabrielsson Anders Eklund Britt-Marie Larsson Prescott G. Woodruff David J. Erle 2012The Journal of Allergy and Clinical Immunology2012,,:1
11Endothelial Function in Resistance and Conduit Arteries and 5-Year Risk of Cardiovascular Disease显示文摘Lars Lind Lars Berglund Anders Larsson Johan Sundstr?m 2011Circulation2011,,14:1
12High-angle deflection of metagrating-integrated laser emission for high-contrast microscopy显示文摘Flat metaoptics components are looking to replace classical optics elements and could lead to extremely compact biophotonics devices if integrated with on-chip light sources and detectors.However,using metasurfaces to shape light into wide angular range wavefronts with high efficiency,as is typically required in high-contrast microscopy applications,remains a challenge.Here we demonstrate curved GaAs metagratings integrated on vertical-cavity surface-emitting lasers(VCSELs)that enable on-chip illumination in total internal reflection and dark field microscopy.Based on an unconventional design that circumvents the aspect ratio dependent etching problems in monolithic integration,we demonstrate off-axis emission centred at 60°in air and 63°in glass with>90%and>70%relative deflection efficiency,respectively.The resulting laser beam is collimated out-of-plane but maintains Gaussian divergence in-plane,resulting in a long and narrow illumination area.We show that metagrating-integrated VCSELs of different kinds can be combined to enable rapid switching between dark-field and total internal reflection illumination.Our approach provides a versatile illumination solution for high-contrast imaging that is compatible with conventional microscopy setups and can be integrated with biophotonics devices,such as portable microscopy,NIR-II range bioimaging,and lab-on-a-chip devices.Mindaugas Juodėnas Erik Strandberg Alexander Grabowski Johan Gustavsson HanaŠípová-Jungová Anders Larsson Mikael Käll 2023Light(Science & Applications)2023,12,11:0
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