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Not just fuel: energy stores are correlated with immune function and oxidative damage in a long-distance migrant

current Zoology 2020年第1期66卷 21-28页

作者： cas EIKENAAR Arne HEGEMANN Florian PAcKMOR Iris KLEUDGEN c.roline isaksson Institute of Avian Research 26386 WilhelmshavenGermany Department of Biology Lund UniversityLundSE-22362Sweden School of Natural Sciences Bangor UniversityDeiniol RoadBangorLL572DGUK

In many animals,catabolic and anabolic periods are temporally *** birds alternate energy expenditure during flight with energy accumulation during *** size of the energy stores at stopover affects the decision to resume migration and thus the temporal organization of *** now provide data suggesting that it is not only the size of the energy stores per se that may influence migration scheduling,but also the physiological consequences of *** two subspecies of the northern wheatear Oenanthe oenanthe,a long-distance migrant,estimated energy stores at a stopover during autumn migration were positively related with both constitutive innate and acquired immune function,and negatively related with oxidative damage to *** other words,migrants'physiological condition was associated with their energetic *** time spent at stopover before sampling may have contributed to this relationship,our results suggest that migrants have to trade-off the depletion of energy stores during flight with incurring physiological *** will affect migrants'decisions when to start and when to terminate a migratory *** physiological costs associated with the depletion of energy stores may also help explaining why migrants often arrive at and depart from stopover sites with larger energy stores than *** propose that studies on the role of energy stores as drivers of the temporal organization of(avian)migration need to consider physiological condition,such as immunological and oxidative states.

关键词： migration oxidative stress eco-immunology immunity fat stores physiology

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Nuclear physics program at MAX-lab

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chinese Physics c 2009年第12期33卷 1159-1166页

作者： W.J. Briscoe Jason Brudvik K.G. Fissum K. Hansen L. isaksson M. Lundin B. Nilsson B. Schroder center for Nuclear Studies The George Washington University Washington DC 20052 USA Department of Physics Lund University Lund SE-221 00 Sweden MAX-lab Lund SE-221 00 Sweden

The upgrade of the MAX-lab injector and the construction of MAX Ⅲ, provided the opportunity for upgrading the tagged-photon facility and thus lead to the possibility of more extensive program in nuclear physics research. This upgrade increased the injected electron energy to an eventual maximum of 250 MeV and allows for the extraction of electrons from the MAX Ⅰ ring operated in the stretcher mode. The first stretched beam was delivered in September 2005. The tagged-photon facility was commissioned in parallel with the commissioning of new experimental equipment. The PAc approved experimental program is current in progress, including measurements of pion photoproduction below the △（1232）. The efforts at the tagged photon-facility are pursued within an international collaboration with around fifty members.

关键词： photonuclear reactions pion production compton scattering

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瑞典北部基茹纳地区铜矿床含矿植被的实例研究

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干旱区地理 1992年第2期15卷 89-94页

作者： H.isaksson M.Sc L.c.Adersson M.Sc T.Lic 包安明瑞典地质公司瑞典空间有限公司

瑞典北部基茹纳地区土壤中含铜量丰富,被认为与该区露天草场一种叫“威斯卡里亚、阿尔盘纳”的小花分布一致。在威斯卡里亚和帕特哈瓦热中部两种不同铜矿化区均发现类似情况。本研究利用卫星资料,航空数字图象高程图和航空植被图对植被... 详细信息

瑞典北部基茹纳地区土壤中含铜量丰富,被认为与该区露天草场一种叫“威斯卡里亚、阿尔盘纳”的小花分布一致。在威斯卡里亚和帕特哈瓦热中部两种不同铜矿化区均发现类似情况。本研究利用卫星资料,航空数字图象高程图和航空植被图对植被的含矿性进行分析,结果与其它地质方法所提供的重点靶区完全吻合。

关键词：铜矿矿床植被图象传感器

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Anthropogenic emission is the main contributor to the rise of atmospheric methane during 1993-2017

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National Science Review 2022年第5期9卷 154-166页

作者：张臻 Benjamin Poulter Sara Knox Ann Stavert Gavin McNicol Etienne Fluet-chouinard Aryeh Feinberg 赵园红 Philippe Bousquet Josep G.canadell Anita Ganesan Gustaf Hugelius George Hurtt Robert B.Jackson Prabir K.Patra Marielle Saunois Lena H?glund-isaksson 黄春林 Abhishek chatterjee 李新 Department of Geographical Sciences University of Maryland Biospheric Sciences Laboratory NASA Goddard Space Flight Center Department of Geography University of British Columbia Global carbon Project CSIRO Oceans and Atmosphere Department of Earth and Environmental Sciences University of Illinois Chicago Department of Earth System Science Stanford University Institute for Data Systems and Society Massachusetts Institute of Technology college of Oceanic and Atmospheric Sciences Ocean University of China Laboratoire des Sciences du climat et de l’Environment LSCE-IPSL (CEA-CNRS-UVSQ)Université Paris-Saclay School of Geographical Sciences University of Bristol Department of Physical Geography and Bolin centre for climate Research Stockholm University Woods Institute for the Environment and Precourt Institute for Energy Stanford University Research Institute for Global change JAMSTEC International Institute for Applied Systems Analysis (IIASA) Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Global Modeling and Assimilation Office NASA Goddard Space Flight Center Universities Space Research Association Institute of Tibetan Plateau Research Chinese Academy of Sciences

Atmospheric methane(cH4) concentrations have shown a puzzling resumption in growth since 2007 following a period of stabilization from 2000 to *** hypotheses have been proposed to explain the temporal variations in cH4growth,and attribute the rise of atmospheric cH4either to increases in emissions from fossil fuel activities,agriculture and natural wetlands,or to a decrease in the atmospheric chemical ***,we use a comprehensive ensemble of cH4source estimates and isotopic δ13c-cH4source signature data to show that the resumption of cH4growth is most likely due to increased anthropogenic *** emission scenarios that have the fewest biases with respect to isotopic composition suggest that the agriculture,landfill and waste sectors were responsible for 53±13% of the renewed growth over the period 2007-2017 compared to 2000-2006;industrial fossil fuel sources explained an additional 34 ±24%,and wetland sources contributed the least at 13 ±9%.The hypothesis that a large increase in emissions from natural wetlands drove the decrease in atmospheric δ13c-cH4values cannot be reconciled with current process-based wetland *** finding suggests the need for increased wetland measurements to better understand the contemporary and future role of wetlands in the rise of atmospheric methane and climate *** findings highlight the predominant role of anthropogenic activities in driving the growth of atmospheric cH4concentrations.

关键词： greenhouse gas carbon cycle climate mitigation wetland methane isotope

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