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30篇 您的检索式:作者名="Duhl"
    题名 作者 年代 出处 被引量
1长白山温带森林挥发性有机物的排放通量显示文摘2010年夏季,在长白山温带森林开展了挥发性有机物(VOC)排放通量以及气象参数、PAR的综合测量.VOC排放通量采用松弛涡度积累(RelaxedEddyAccumulation)技术在森林冠层上进行测量.初步发现长白山阔叶林主要排放α-蒎烯、β-蒎烯、莰烯、香桧烯、月桂烯、蒈烯、柠檬烯、罗勒烯、松油烯、繖花烃、萜品油烯、三环烯等.研究表明,长白山阔叶混交林VOC排放有明显的日变化——早晚较低和中午前后较高.2010年夏季,单萜烯总排放通量的平均值为0.242mg·m·h-2-1,其变化范围为0.005~1.668mg·m·h-2-1;各成分排放通量的平均值(和最大值)分别为α-蒎烯0.072(0.234)、莰烯0.028(0.356)、月桂烯0.027(0.433)、蒈烯0.023(0.173)、柠檬烯0.037(0.197)、罗勒烯0.016(0.168)、萜品油烯0.053(0.320)、繖花烃0.067(0.755)mg·m·h-2-1.研究还发现VOC排放通量与气温之间存在一定的联系.白建辉 林凤友 万晓伟 Guenther Alex Turnipseed Andrew Duhl Tiffany 2012环境科学学报2012,32,3:14
2亚热带竹林挥发性有机物排放的模拟显示文摘2012年7月至2013年1月,采用松弛涡度积累(Relaxed Eddy Accumulation)技术在我国浙江省亚热带竹林测量了挥发性有机物(BVOC)冠层尺度的排放通量,同步测量了气象参数、太阳辐射(总辐射、直接辐射、光合有效辐射PAR)。利用PAR能量平衡原理,建立了冠层尺度异戊二烯和单萜烯排放的经验模式,经验模式对于日变化、季节变化有较好的模拟。采用不同方法对经验模式进行检验,一般而言,BVOC的模拟值高于测量值。经验模式与MEGANv2.1全球生物排放模式对BVOC排放有比较一致的模拟结果,标准状况下(温度t=30℃、PAR=1 500μmol·m^(-2)·s^(-1)排放因子较接近(异戊二烯分别为4.00和3.60 mg·m^(-2)·h^(-1),单萜烯分别为0.12和0.16 mg·m^(-2)·h^(-1))。经验模式的计算结果表明:竹林BVOC排放主要集中于夏季(7-9月)且以异戊二烯为主(占BVOC排放的87.3%~95.8%)。利用经验模式计算了BVOC排放对各个因子(PAR、水汽、S/Q-散射因子,散射辐射/总辐射)变化的敏感性:当各个因子增加率大于40%时,异戊二烯对PAR的变化最敏感,其次是水汽因子,再次是S/Q;单萜烯对S/Q的变化最敏感,其次是水汽因子,再次是PAR;单萜烯比异戊二烯对S/Q的变化更敏感;异戊二烯和单萜烯对各因子变化的响应是非线性的。冠层尺度上BVOC的排放量与卫星测量的HCHO柱浓度(molec·cm^(-1))之间有良好的线性关系:异戊二烯排放量(mg·m^(-2)·h^(-1))=3.93×10^(-16)HCHO-2.81,单萜烯排放量(mg·m^(-2)·h^(-1))=1.24×10^(-17)HCHO-0.05。对比我国不同生态系统实测的排放通量、排放因子,异戊二烯排放以亚热带竹林最高,其次为温带森林,草地最低;单萜烯排放以温带森林最高,亚热带竹林次之,草地最低。白建辉 DUHL TIFFANY 余树全 王彬 郝楠 2015生态环境学报2015,24,12:9
3Advanced superalloy airfoils显示文摘GELL M DUHL D N GUPTA D K 1987J of Metals1987,,7:1
4The degree of antenatal ventriculomegaly is related to pediatric neurological morbidity显示文摘E. Graham A. Duhl S. Ural M. Allen K. Blakemore F. Witter 2001Journal of Maternal-Fetal and Neonatal Medicine2001,,4:1
5The development of single crystalsuperalloy turbine blade 显示文摘GellM Duhl D N Giamei A F 1980Superalloys1980,,:1
6Low-molecular-weight heparins for the prevention and treatment of venous thromboembolism in at-risk pregnant women:a review显示文摘Duhl AJ 2008JReprod Med2008,53,9:1
7The degree of ante- natal ventriculomegalyis related to pediatric neurolog- ical morbidity显示文摘Graham E Duhl A Ural S 2001J Matern Fetal Med2001,10,4:1
8Differences in dorsal and ventral pigmentation result from regional expression of the mouse Agouti gene显示文摘Vrieling H Duhl D M Millar S E 1994Proc Natl Acad Sci USA1994,91,12:1
9The Healthy City:Its Function and Its Future显示文摘Duhl L J 1986Heal Promot1986,1,:1
10The Development of single crystalsuperalloy turbine blades 显示文摘Gell M Duhl D L Giamei A F 1980Superalloys1980,9,:1
11The degree of antenatal ventriculo- megaly is related to pediatric neurogieal morbidity 显示文摘Graham E Duhl A Ural S 2001J Matern Fe- tal Med2001,10,4:1
12Differences in dorsal and ventral pigmentation result from regional expression of the mouse agouti gene显示文摘H Vrieling D M Duhl S E Millar 1994ProcNatl AcadSci USA1994,91,12:1
13Nitrogen source effect on nitrate and ammonium leaching and runoff losses from greens显示文摘BROWN K W THOMAS J C DUHLE R J 1982Agronomy journal1982,74,:1
14The degree of antenatal ventriculo-megaly is related to pediatric neurological morbidity显示文摘Graham E Duhl A Ural S 2001J Matern Fe-tal Med2001,10,4:1
15The effect of stress and temperature on the extent of primary creep in directionally solidified nickel base superalloys显示文摘Leverant G R Duhl D N 1971Metall Trans1971,2,:1
16Natural and unnatural organic matter in the alLmosphere: recent perspectives on the high molecular weight fraction of organic aerosol 显示文摘DUHL T R CLEMENTS N MLADENOV N 2014ACS Symposium Series2014,1160,:1
17The degree of antenatal ventriculomegaly is related to pediatric neurological morbidity显示文摘Graham E Duhl A Ural S 2001J Matern Fetal Med2001,10,4:1
18The development of single crystal superatloy turbine blades显示文摘Gell M Duhl D L Giamei A F 1980Superalloys1980,,9:1
19Cloning of the mouse agouti gene predicts a secreted protein ubiqui- tously expressed in mice carrying the lethal yellow muta- tion 显示文摘Miller M W Duhl D M Vrieling H 1993Genes & Development1993,7,3:1
20Anti-thrombotic therapy report and recommendations for prevent ion and treatment of venous thromboembolism and adverse pregnancy outcomes显示文摘Duhl AJ Paidas MJ Ural SH 2007Am J Obstet Gynecol2007,197,5:1
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