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10篇 您的检索式:作者名="Walter Falcon"
    题名 作者 年代 出处 被引量
1Impacts of El Nino-Southern Oscillation events on China's rice production显示文摘This paper aims to demonstrate the relationships between ENSO and rice production of Jiangxi province in order to identify the reason that ENSO might have little effect on Chinese rice production. Using a data set with measures of Jiangxi's climate and rice production,we find the reason that during 1985 and 2004 ENSO's well correlated with rainfall did not promote Chinese rice production. First,the largest effects of ENSO mostly occur in the months when there is no rice in the field. Second,there is almost no temperature effect. Finally,the monthly distribution of rainfall is almost the same in ENSO and neutral years because the largest effects are during months when there is the least rain. In addition,due to the high irrigation share and reliable and effective irrigation facilities of cultivated land,China's rice production is less climate-sensitive.DENG Xiangzheng HUANG Jikun QIAO Fangbin Rosamond L. Naylor Walter P. Falcon Marshall Burke Scott Rozelle David Battisti 2010Journal of Geographical Sciences2010,20,1:7
2Laparoscopic surgery for enterocele,vaginal apex prolapse and rectocele显示文摘Paraiso MFR Falcone T Walters MD 1999Int Urogynecol J1999,10,4:1
3Hysterectomy for benign disease显示文摘FALCONE T WALTERS MD 2008Obstetrics Amb Gynecology2008,111,3:1
4Losing the links between livestock and land 显示文摘NAYLOR ROSAMOND HENNING STEINFELD WALTER FALCON 2005Science2005,310,:1
5Losing the links between livestock and land 显示文摘Nalor rosamond Henning Steinfeld Walter Falcon 2005Science2005,,310:1
6Losing the links between livestock and land显示文摘Nalor Rosamond Henning Steinfeld Walter Falcon 2005Science2005,,310:1
7Laparoscopic Surgery for Enterocele, Vaginal Apex Prolapse and Rectocele显示文摘M. F. R. Paraiso T. Falcone M. D. Walters 1999International Urogynecology Journal1999,,4:1
8Losing the links between livestock and land显示文摘Nalor Rosamond Henning Steinfeld Walter Falcon 2005Science2005,310,9:1
9Detection of presumed genes encoding beta-lactamases by sequence based screening of metagenomes derived from Antarctic microbial mats显示文摘Analysis of environmental samples for bacterial antibiotic resistance genes may have different objectives and analysis strategies. In some cases, the purpose was to study diversity and evolution of genes that could be grouped within a mechanism of antibiotic resistance. Different protocols have been designed for detection and confirmation that a functional gene was found. In this study, we present a sequence-based screening of candidate genes encoding beta-lactamases in 14 metagenomes of Antarctic microbial mats. The samples were obtained from different sites, representing diverse biogeographic regions of maritime and continental Antarctica. A protocol was designed based on generation of Hidden Markov Models from the four beta-lactamase classes by Ambler classification, using sequences from the Comprehensive Antibiotic Resistance Database (CARD). The models were used as queries for metagenome analysis and recovered contigs were subsequently annotated using RAST. According to our analysis, 14 metagenomes analyzed contain A, B and C beta-lactamase genes. Class D genes, however, were identified in 11 metagenomes. The most abundant was class C (46.8%), followed by classes B (35.5%), A (14.2%) and D (3.5%). A considerable number of sequences formed clusters which included, in some cases, contigs from different metagenomes. These assemblies are clearly separated from reference clusters, previously identified using CARD beta-lactamase sequences. While bacterial antibiotic resistance is a major challenge of public health worldwide, our results suggest that environmental diversity of beta-lactamase genes is higher than that currently reported, although this should be complemented with gene function analysis.Gaston Azziz Matias Gimenez Hector Romero Patricia M. Valdespino-Castillo Luisa I. Falcon Lucas A. M. Ruberto Walter P. Mac Cormack Silvia Batista 2019Frontiers of Environmental Science & Engineering2019,13,3:0
10国际肉类贸易——显露的仅仅是冰山一角显示文摘本文提供了一种原创的计算,用以说明牲畜的产业化生产和国际贸易所耗费的全球土地、水资源和氮的利用量,重点分析了两个增长最快的部门——猪肉业和家禽业。本文分析的重点主要集中在饲料和动物产品的国际贸易上,利用一个新的模型计算了生产中所需的虚拟水、虚拟氮和虚拟土地资源的数量,但本文没有涉及嵌入在产品中的水、氮和土地数量。我们阐明了主要的肉类进口国,像日本,是如何从虚拟水、虚拟氮和虚拟土地资源的贸易中受益的,主要的肉类出口国,像巴西,提供了这些商品,而相应的环境成本却并未得到真正的补偿。模型的模拟结果显示,由于猪肉和鸡肉的进口,日本获得的虚拟土地资源相当于日本耕地总面积的50%,而虚拟氮总量的一半留在了美国。巴西向中国出口饲料和肉类产品,相当于中国将15%的虚拟氮留在了巴西。巴西有20%的土地面积种植用于出口的大豆。由于美国和荷兰既是肉类进口国又是出口国,具有双重身份,有关肉类产品、饲料、水、氮的贸易来往相当复杂。要减轻牲畜的产业化生产和贸易对环境带来的破坏,需要多种措施相结合,包括直接纠正价格、采用管理途径和最佳的经营方式等。本文分析显示,如果这些措施都得以实现,水资源和氮利用效率将会提高,土地得到保护,资源成本将明显降低。James N. Galloway Marshall Burke G. Eric Bradford Rosamond Naylor Walter Falcon Ashok K. Chapagain Joanne C. Gaskell Ellen McCullough Harold A. Mooney Kirsten L. L. Oleson Henning Steinfeld Tom Wassenaar Vaclav Smil 范玉枝(译) 辛良杰(校) 2007AMBIO-人类环境杂志2007,36,B12:0
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