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289篇 您的检索式:作者名="Leun"
    题名 作者 年代 出处 被引量
1太阳紫外辐射增加对人类健康的影响显示文摘伴随着平流层臭氧耗损,UV-B辐射增加对人类健康将可能有很大的影响。潜在的危险包括眼病、皮肤癌和传染病发生率的增加。对某些形响(例如皮肤癌)的危害性的定量估计是可能的,而对另外一些影响(例如传染病),由于缺乏足够的资料,定量估计是不可能的。在实验系统中显示,UV辐射损伤眼角膜和眼的晶状体。生命期长期积累的高剂量UV-B辐射是与皮质型及后囊下型白内障危害相联系的几个原因之一。臭氧耗损对白内障的影响已做了估计,但仍十分不确定。这些估计指出当臭氧减少l%白内障的增加0.5%。免疫系统的某些成分存在于皮肤中,使得免疫系统易受UV辐射的影响。在动物身上的试验表明,UV照晒能降低对皮肤癌、传染物和其它抗原的免疫反应,重复照晒还可能导致免疫反应丧失。抑制免疫既可以局部出现在太阳照射皮肤处,也可系统性地出现在非太阳照射部位。在人体上的研究也指出,UV-B辐射能抑制某些免疫反应的产生,并可能造成免疫功能系统性的改变。这些免疫影响,相对于人传染病的重要性是未知的。然而,在传染病对人的健康是主要威胁的地区以及在免疫功能已受到抑制的人群中,UV-B引起的免疫抑制的损害增加可能是很大的。在敏感的白皮肤人群中,生命期UV-B累积照晒对非黑瘤皮肤癌(NM-SC)的发展是个关键的危险因素。这一知识已允许我们对臭氧损失引起的NMSC发生率增长的危险性作定量估计。使用来源于动物试验和人流行性病学的资料,我们估计,平流层臭氧1%持续性的减少将会导致 NMSC发生率增加约 2%。UV-B照晒与黑瘤皮肤癌之间的关系更为少知,而且它似乎与 NMSC的那种关系根本不同,不同点在于,它实际上不是生命期积累剂量的一个函数,但可能与高剂量照晒(如晒伤)的多次累积作用相联系。流行性病学资料指出,随着强日光照晒(即,晒伤)事件的增加,黑色瘤危险性将增加,尤其是儿童。然而,这些曝晒和黑瘤之间的关系如何模型化以使得由于臭氧耗损造成的黑瘤增加估计得更准确,这点是没有把握的。Janice D.Longstreth Frank.R.deGruijl Margaret L.Kripke Yukio Takizawa Jan C.van der Leun 王寅辉 1995人类环境杂志1995,24,3:2
2Nonvolatile taste components of Agarieus bisporus harvested at different stages of maturity 显示文摘Shu- Yao Tsai Tsai- Ping Wu Jeng- Leun Mau 2007Food Chemistry2007,103,:1
3A critical appraisal of a combined stomatal-ph- totsynthesis model for CO2 plants显示文摘LEUNING R 1995Plant Cell and Envi- ronment1995,18,:1
4Modelling stomatal behavior and photosynthesis of Euca- lyptus gram/is显示文摘Leuning R 1990Australian JowTtal of Plant Physiology1990,17,2:1
5Leaf nitrogen, photosynthesis, conductance and transpiration: scaling from leaves to canopies显示文摘Leuning R Kclliher F M De Pury D G G 1995Plant Cell and Environment1995,18,10:1
6Regional evaporation estimates from flux tower and MODIS satellite data显示文摘Cleugh H A Leuning R Mu Q Z 2007Remote Sensing of Environment2007,106,:1
7Correction of flux measurements for density effects due to heat and water va- pour transfer显示文摘Webb E K Pearman G I Leuning R 1980Quarterly Journal of the Royal Meteorological Society1980,106,447:1
8A critical appraisal of a combined stomatal-photosynthesis model for C3 plants显示文摘LEUNING R 1995Plant Cell and Environment1995,18,:1
9Quantificatian of PoIyma BK Vimria in hemorrhagic cystitis complieaing bone marrow transplantation显示文摘Leun g A Y Suan CK Lie A K 2001Blood2001,98,6:1
10Correction of flux measurements for density effects due to heat and water vapor transfer显示文摘Webb E K G I Pearman R Leuning 1980Quart J Roy Meteor Soc1980,106,:1
11A coupled model of stomatal conductance, photosynthesis and transpiration显示文摘TUZET A PERRIER A LEUNING R 2003Plant Cell and Environment2003,26,7:1
12A Re-Evaluation of Long-Term Flux Measurement Techniques Part I: Averaging and Coordinate Rotation显示文摘J. J. Finnigan R. Clement Y. Malhi R. Leuning H.A. Cleugh 2003Boundary - Layer Meteorology2003,,1:1
13Clinicopathological featur--es and risk factors of clinically overt haemorrhagic cystitis complicating bone marrow transplantationJ bone显示文摘Leun g A Y Mak R Lie AK 2002Marrow Transplant2002,29,6:1
14The propagation of errors in long-term measurement of land-atmosphere fluxes of carbon and water显示文摘 Malhi Y Leuning R 1996Global Change Biology1996,2,:1
15Effect of basic fibroblast growth factor on angiogenesis and growth of isografted bone:quantitative in vit-ro-in vito analysis in mice 显示文摘Leuning M Yuan F Gerweck LE 1997Int J Microcirc Clin Exp1997,17,1:1
16Carbon dioxide and methane fluxes from an intermittently flooded paddy field显示文摘MIYATA A LEUNING R DENMEAD O T 2000Agricultural and Forest Meteorology2000,102,:1
17The correct form of the Webb, Pearman and Leuning equation for eddy fluxes of trace gases in steady and non-steady state, horizontally homogeneous flows显示文摘Leuning R 2007Boundary- Layer Meteorology2007,123,2:1
18Nonvolatile taste components of fruit bodies and mycelia of Cordyceps militaris显示文摘Shil - Jeng Huang Shu- Yao Tsai Jeng- Leun Mau 2006Food Science and Technology2006,39,:1
19Stressful life events, motives for internet use, and social support among digital kids显示文摘Leun L 0,,:1
20A Re-Evaluation of Long-Term Flux Measurement Techniques Part I: Averaging and Coordinate Rotation显示文摘J. J. Finnigan R. Clement Y. Malhi R. Leuning H.A. Cleugh 2003Boundary - Layer Meteorology2003,,1:1
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