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629篇 您的检索式:作者名="Alm"
    题名 作者 年代 出处 被引量
1北方沼泽地水位下降对全球气候变暖的影响显示文摘自从最后一次冰川消退以来,北方沼泽地(3.46亿hm^2)积存了300~500Pg碳。这些沼泽地在分离二氧化碳(CO_2)的同时,释放了相当数量的甲烷(CH_4)到大气中。正如对高纬地区预报的那样,如果夏季变得更热、更干,未来沼泽地温室气体的平衡将发生变化,随之而来的CH_4排放将减少,而CO_2和N_2O的排放将增加。北部沼泽地水位下降预计将增强温室效应的影响。我们分别在不同营养水平的未排水和排水的沼泽地测量了碳循环的组分,并把这些结果归纳成一个简单的辐射强迫因子,用以评价水位下降对大气的综合影响。在对存于土壤和树木中的碳以及为经营森林而排水引起的水位下降后CO_2、CH_4和N_2O的通量的变化作出测量的基础上,我们提出一个假设,即由气候变化引发的干旱趋势将减弱北方沼泽地对总辐射强迫的影响,这一影响在100年内约为0.1W/m^2。CH_4排放的减少,沼泽地碳储量的微小变化和树木生物量储存的增加都将导致这一变化。Jukka Laine Jouko Silvola Kimmo Tolonen Jukka Alm Hannu Nyknen Harri Vasander Tapani Sallantaus Ilkka Savolainen Jukka Sinisalo Pertti J.Martikainen 钱云 1996人类环境杂志1996,25,3:4
2柴油乳化液喷雾闪急沸腾与微爆现象的激光阴影试验研究(英文)显示文摘在常压定容室内,应用ND:YAG激光阴影法、高分辨率CCD照相机和粒径分析软件,对不同含水量的柴油乳化液雾油滴的闪急沸腾与微爆现象以及油滴粒径分布进行了试验测量与变参数对比分析,探讨了在130℃温度条件下,乳化油含水量对乳化油喷雾液滴闪急沸腾和微爆的影响,揭示了微爆效应在喷雾雾化和液滴碎化中的作用机理。试验结果表明,包覆于油中的水相颗粒受热闪急沸腾所形成的高压蒸气团冲破无水边界层是导致油滴发生微爆和进一步破碎分裂的首要原因;微爆现象随乳化油含水量的增高而趋强;喷雾索特平均直径(SMD)的细化率随乳化油含水量和喷雾贯穿距的增加而增大,且乳化油含水量对喷雾SMD细化率的影响程度也随喷雾贯穿距的增加更加显著。MEDHAT Elkelawy 张煜盛 Alm El-Din Hagar 余敬周 El Zahaby A M El Shenawy E A Khalil A 2009内燃机学报2009,27,4:3
3Fluxes of methane, carbon dioxide and nitrous oxide in boreal lakes and potential anthropogenic effects on the aquatic greenhouse gas emissions显示文摘Jari T. Huttunen Jukka Alm Anu Liikanen Sari Juutinen Tuula Larmola Taina Hammar Jouko Silvola Pertti J. Martikainen 2003Chemosphere2003,,3:2
4Genomic-Sequence Comparison of Two Unrelated Isolates of the Human Gastric Pathogen Helicobacterpylori 显示文摘Alm R A Ling L L Moir D T 1999Nature1999,397,14:1
5Estimating the determinants of taxpayer compliance with experimental data显示文摘Alm J Jackson B McKee M 1992National Tax Journal1992,45,:1
6On the estimation of the extreme- value index and large quantile estimation 显示文摘Dekkers ALM Haan de L 1989Annals of Statistics1989,17,4:1
7Does co-location matter for formal knowledge collaboration in the Swedish biotechnology-pharmaceutical sector?显示文摘McKelvey M Alm H Riccaboni A 2003Research Policy2003,32,3:1
8Acute BRSV infection in young AI bulls:Effect on sperm quality显示文摘Alm K Koskinen E Vahtiala S 0,,03:1
9Audit Certainty, Audit Productivity, and Taxpayer Compliance 显示文摘James Alm Michael McKee 2006National Tax Journal2006,59,4:1
10Cholinergic nerves in human corpus cavernosum and spongiosum contain nitric oxide synthase and heme oxygenase显示文摘Hedlund P Ny L Alm P 2000J Urol2000,164,31:1
11Economic burden of physical activity-related injuries in Dutch children aged 10-12显示文摘Dorine CM Collard Evert ALM Verhagen Willem van Mechelen 0,,:1
12Globalization and Tax Policy显示文摘NEUMANN R HOLMAN J ALM J 2009North American Journal of Economics and Finance2009,20,2:1
13Mechanisms of protein folding显示文摘Grantcharova V Alm E J Baker D 2001Curr Opin Struct Biol2001,11,:1
14Differential prognostic impact of the cyclin E and B in premenopausal and postmenopausal women with lymph node-negative breast cancer显示文摘Rudolph P Kuhling H Alm P 2003Int J Cancer2003,105,5:1
15Hemodiafiltration with online regeneration of the ul- trafiltrate显示文摘De Francisco ALM Ghezzi PM Brendolan A 2000Kidney Int2000,58,:1
16A pivotal role for the natural interferon alpha-producing cells (plasmacytoid dendritic cells)in the pathogenesis of lupus 显示文摘Ronnblom L Alm G A 2001J Exp Med2001,194,12:1
17The influence of the mycotoxins deoxynivalenol and zearalenol on in vitro maturation of pig oocytes and in vitro culture of pig zygotes 显示文摘Alm H Greising T Brussow KP 2002Toxicol In Vitro2002,16,6:1
18Characterization of uni-versal small-subunit rRNA hybridization probes for quantita-tive molecular microbial ecology studies显示文摘Zheng D Alm E W Stahl D A 0,,:1
19Getting the word out: Enforcement information dissemination and compliance behavior显示文摘Alm J Jackson B R McKee M 2009Journal of Public Economics2009,93,3:1
20Nonpoint sources of pollution显示文摘ALM A L 1990Environmental Sci- ence and Technology1990,24,7:1
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