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16篇 您的检索式:作者名="R.JAMES"
    题名 作者 年代 出处 被引量
1Biological potency of German cockroach allergen extracts determined in an inner city population显示文摘J. E.Slater R.James J. A.Pongracic A. H.Liu S.Sarpong H. A.Sampson S. M.Satinover J. A.Woodfolk H. E.Mitchell P. J.Gergen P. A.Eggleston 2007Clinical & Experimental Allergy2007,,7:1
2Yield responses of direct-seeded wheat to rhizobacteria and fungicide seed treatments显示文摘R.JAMES COOK DAVID M.WELLER ADEL YOUSSEF ELBANNA 0,,7:1
3Zinc extractability as a function of pH in organic waste-amended soils显示文摘Munsuk S.Yoo Bruce R.James 0,,:1
4Taxes and Corporate Charity:Empirical Evidence from Micro-level Panel Data显示文摘Boatsman R.James Sanjay Gupta 0,,49:1
5Effect of diet on adipose tissue and skeletal muscle VLDL receptor and LPL: implications for obesity and hyperlipidemia显示文摘Christian K Roberts R.James Barnard Kai Hui Liang Nosratola D Vaziri 2002Atherosclerosis2002,,1:1
6IPO Pricing and Share Allocation:The Importance of Being Ignorant显示文摘C(E)LINE GONDAT-LARRALDE KEVIN R.JAMES 0,,02:1
7小麦或大麦连作下的全蚀病治理(Ⅱ)显示文摘R.James 刘汉文 1994国外农学(麦类作物)1994,,6:1
8Trade in Goods and Factors with International Differences in Technology显示文摘R.James Markuson Lars Svenson 0,,:1
9Structure-from-Motion Photogrammetry and Rare Earth Oxides can quantify diffuse and convergent soil loss and source apportionment显示文摘Accurately quantifying rates of soil erosion requires capturing both the volumetric nature of the visible,convergent fluvial pathways(also known as rills)and the subtle nature of the less-visible,diffuse pathways(interrill areas).The aim of this study was to use Rare Earth Oxide(REO)tracers and Structure-from-Motion(SfM)photogrammetry to elucidate retrospective information about soil erosion rates and sediment sources during different soil erosion conditions,within a controlled laboratory environment.The experimental conditions created erosion events consistent with diffuse and convergent erosion processes.REO tracers allowed the sediment transport distances of over 2 m to be described,and helped resolved the relative contribution of diffuse and convergent soil erosion;interrill areas were also iden-tified as a significant sediment sources soil loss under convergent erosion conditions.While the potential for SfM photogrammetry to resolve sub-millimetre elevations changes was demonstrated,under some conditions non-erosional changes in surface elevation,such as compaction,exceeded volumes of soil loss via diffuse erosion.The discrepancies between SfM Photogrammetry calculations and REO tagged sediment export were beneficial,identifying that during soil erosion events sediment in both aggregate and particle form is deposited within the convergent features,even when the rill extended the full length of the soil surface.The combination of SfM photogrammetry and REO tracers has provided a novel platform for building a spatial understanding of patterns of soil loss and source apportionment between rill and interrill erosion.Pia Benaud Karen Anderson Mike R.James Timothy A.Quine John N.Quinton Richard E.Brazier 2023International Soil and Water Conservation Research2023,11,4:0
10溴氰菊酯的化学和光化学异构化显示文摘1974年Elliott等首次报道了溴氰菊酯(deltamethrin,图1)的杀虫性质,1982年在法国由Roussel Uclaf公司商业性开发成功。溴氰菊酯环丙烷环的顺式1R,3R构型以及苄基碳原子上的氰基S构型是该杀虫剂高活性的关键。在加拿大,溴氰菊酯由Hoechst Canada公司推入市场,商品名为Decis,登记注册主要用于如烟草、梨、芥菜、马铃薯、向日葵、花椰菜、甘蓝、小麦和大麦等作物上。由于溴氰菊酯对水生生物高毒。R.James Maguire 晓岚 1991农药译丛1991,13,4:0
11Antipredatory call behavior of lapwing species in an Afrotropical environment显示文摘Predation is an important source of natural selection on prey species and has resulted in adaptations such as antipredator vocal signals,which can alert others to the presence of predators and solicit cooperative attack.Although vocal alarm signals of birds have been well studied,they are poorly known in tropical African species.To address this lack of information,the antipredatory signals and responses of two lapwings(Wattled Lapwing Vanellus senegallus and Spur-winged Lapwing Vanellus spinosus)to potential predators were investigated using data collected from focal observation,distance measurements,focal recordings,and playback experiment.The lapwing calls elicited to predators were classified as alarm or mobbing calls based on whether the calls elicited alert behavior or attack from other lapwings.Discriminant linear analysis(DLA)was used to compare the time and frequency parameters of the call types measured in Raven PRO.Also,lapwings’responses to intruders,alert and start distance,time of day,and latency,as well as the effects of flock size and distance to cover were examined.About 48%of all calls was correctly classified by DLA.The best predictors of call type for the lapwings were maximum frequency and high frequency.Both alarm and mobbing calls were elicited by African Wattled Lapwings to dogs and humans.Mobbing calls were elicited to intruders by the Spur-winged Lapwings.Alert distance was positively associated with start distance,and differed between morning and evening in both lapwings.With scarce information from tropical Africa,this study put in perspective vocal and antipredator behavior of lapwing species in Africa.Fatima R.James Chioma I.Okafor Samuel T.Osinubi Shiiwua A.Manu Samuel Ivande Taiwo C.Omotoriogun 2023Avian Research2023,14,4:0
12奶牛厩液和^(15)N标记的硝酸钙肥用时的相互作用显示文摘最大限度地发挥牲畜粪肥和无机肥的效益是经济上和环境上所期望的。已经发现在牧草生产中,奶牛厩液的氮肥有效成分变化很大。在牧草生长季节厩液的氮肥有效成分可变性可能是由于通过挥发或反硝化作用使氮受损失。反硝化作用是在无机氮肥和家畜厩液使用后发现的。当含硝酸盐土壤温度大于8℃时,厌氧微生物的小区扩展。R.James Stevens 陈秀为 1989国外农业环境保护1989,,4:0
13新石油显示文摘美国醉心于中东的石油 ,迫使紧张的外交关系缓解 ,同时也必将纵容波斯湾地区的国家 ,使其态度变得更加强硬。另一方面 ,美国也试图从生物质乙醇中获取能源。乙醇是有益于环保的 ,同时又是与美国运输系统兼容的犹如汽油一样有效的燃料。最近的科学突破已经大幅度地降低了乙醇的生产成本。现在 ,美国政府必须实行税收减免而同时又兼顾其他激励措施 ,以刺激立足于本国种植业的新能源的进一步研究和开发 。Richard G.Lugar R.James Wollsey 李旭 2001石油石化节能2001,0,11:0
14电信转型项目:向右延伸、向上延伸、面向你的合作伙伴显示文摘至少对于成熟市场的老牌运营商来说,那些曾经似乎可以推动他们永远持续增长的策略不再行之有效。仅仅依靠更多的网络、更多的流量、甚至更多的内容是不够的。为了从主导运营商的语音业务分一杯羹,竞争对手正在把成本迅速降低的好处转移给客户,这种做法减缓甚至阻止了电信行业收入的整体增长。R.JAMES—MONIKKER 2007网络电信2007,9,5:0
15无害能源显示文摘石油作为交通运输主要能源的时代或许正走向终结,但照目前情形来看,这个进程会比较缓慢。在石油时代缓慢终结的过程中,我们对石油的消耗将继续破坏环境,并给发展战略和经济制造巨大麻烦。美国可以通过以下几个方面来加速从石油到非石油类燃料的进程,R·詹姆斯·伍尔西(R.James Woolsey) 张连营(翻译) 2010环球科学2010,,10:0
16阿尔伯塔南—中部弗拉斯阶Duhamel礁的差异压实地震分析显示文摘Duhamel礁是一个独立的上泥盆统Leduc组石灰岩生物礁,紧靠阿尔伯塔南-中部Bashaw复合体的北北东。Duhamel虽有一较小盆地区(小于12km^2),但该礁在台地相之上隆起约275m。根据地震数据,我们认为似乎有一比礁内部升高约25m的礁环形凸起边缘。凸起边缘被认为是成岩及礁复合体内部的差异压实形成的。这一论点与综合地震及井口资料的结果是一致的。Duhamel的实例说明,即使是较小的Leduc礁也显现出凸起的礁环,而且在地震资料上显而易见。钻井前,为了对完整的凸起礁环而不只是它的上倾侧进行成像并确定其位置,应对相似的整个礁体采集反射地震数据,以便使全部礁环可用于钻井检验。R.James Brown 郭金城 1998国外油气勘探1998,10,2:0
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