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Intestinal parasitism in schoolchildren in 2005, 2006 and 2007: A real challenge to overcome by the national deworming campaign in Northwestern Mexico
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作者 Luis Quihui Cota Gloria Guadalupe Morales-Figueroa 《Open Journal of Preventive Medicine》 2013年第2期178-183,共6页
Introduction: Intestinal parasitism has been a challenge to overcome for the Mexican deworming campaign and this study determined the prevalence of these infections in schoolchildren treated with albendazole in Northw... Introduction: Intestinal parasitism has been a challenge to overcome for the Mexican deworming campaign and this study determined the prevalence of these infections in schoolchildren treated with albendazole in Northwestern Mexico. Methods: Study sites in marginal conditions, with gastrointestinal infections and albendazole intervention were selected. The Faust and Kato Katz techniques were used to identify the parasites spp. and the NCSS software was used for statistical analysis. Results: A total of 450, 389 and 364 schoolchildren participated in 2005, 2006, and 2007 respectively during this study. The mean age was 7.9 (±1.3). The estimated prevalences were of 42%, 30% and 37% for protozoa infections, and 11%, 12% and 11% for helminth infections in 2005, 2006 and 2007 respectively. Conclusion: The education strategies should be integrated into the Mexican deworming campaign. 展开更多
关键词 INTESTINAL PARASITISM ALBENDAZOLE DEWORMING CAMPAIGN SCHOOLCHILDREN northwest mexico
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Temperature Trend Analysis in the North Pacific Watershed in Mexico
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作者 César Enrique Romero-Higareda Luz Isela Peinado-Guevara +3 位作者 Samuel Campista-León Juana Cázarez-Martínez Jorge Guillermo Sánchez-Zazueta Rogelio Sánchez-Banuelos 《American Journal of Climate Change》 2014年第3期306-325,共20页
Through the monthly data of 71 meteorological stations of the North Pacific Watershed in northwest Mexico, the annual trends of nine temperature variables were estimated using the non-parametric Mann-Kendall test and ... Through the monthly data of 71 meteorological stations of the North Pacific Watershed in northwest Mexico, the annual trends of nine temperature variables were estimated using the non-parametric Mann-Kendall test and the Q Sen’s slope estimator. Annual Q Sen’s slopes were analyzed in spatial terms using geographic variables as independent factors and likewise with Moran’s I index. Three major physiographic zones were used to perform a regional analysis using pooled data. The monthly trends were also analyzed. Divergent annual trends were found for the nine proposed variables and warming trends were predominant in almost all of them. Latitude is the most relevant factor in the spatial distribution of the Q Sen’s slopes. Four temperature variables were found statistically clustered, as depicted by the Moran’s I index. The largest regional Q Sen’s slopes values were found in the Coastal Plains. In this area a larger increase in minimum temperatures was observed, in contrast with the Sierra Madre regions, where the largest rate of increasing change was found in maximum temperatures. The monthly analysis indicates warming trends in the first six months of the year with a sudden decrease in July and also a noticeable decrease in the slope values in December. 展开更多
关键词 Climate Change northwest mexico Regional Analysis
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1993年全球地震活动综述
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作者 吴佳翼 《国际地震动态》 1994年第8期7-11,共5页
根据国家地震局地球物理研究所编制的《中国地震台临时报告》的初步资料和美国地质调查局编印的《PreliminaryDeterminationofEpicenters》月报,整理出1993年全球6级以上地震目录,并画出1... 根据国家地震局地球物理研究所编制的《中国地震台临时报告》的初步资料和美国地质调查局编印的《PreliminaryDeterminationofEpicenters》月报,整理出1993年全球6级以上地震目录,并画出1993年1-12月全球及中国大陆地震活动性指数A(b)值曲线。1993年全球地震活动水平初步评定为中等偏高;全球地震活动中心在太平洋西北边缘地震带,共发生M_s7.6地震两次。全球地震活动最高月份为9月,中国大陆地震活动最高月份为10月。三次最大地震分别是:7月12日的日本北海道西南近海地震,8月8日的马里亚纳群岛以南(关岛)地震,9月10日的墨西哥恰帕斯州近海地震。 展开更多
关键词 地震活动性 全球地震 太平洋
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全球深水油气勘探40年大发现及未来勘探前景 被引量:59
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作者 张功成 屈红军 +2 位作者 赵冲 张凤廉 赵钊 《天然气地球科学》 EI CAS CSCD 北大核心 2017年第10期1447-1477,共31页
深水勘探自1975年至今已发展40余年,其勘探发现历程总体可划分为起步阶段(1975—1984年)、早期阶段(1985—1995年)和快速发展阶段(1996年至今)。目前深水区已成为全球油气勘探的热点和油气增储上产的重要领域之一。40年来全球深水油气... 深水勘探自1975年至今已发展40余年,其勘探发现历程总体可划分为起步阶段(1975—1984年)、早期阶段(1985—1995年)和快速发展阶段(1996年至今)。目前深水区已成为全球油气勘探的热点和油气增储上产的重要领域之一。40年来全球深水油气大发现主要沿"三竖两横"五大深水盆地群分布:(1)大西洋深水盆地群的石油重大发现主要集中在南段的巴西、西非和墨西哥湾,天然气主要在北部的挪威西海岸;(2)东非陆缘深水盆地群则在鲁武马盆地、坦桑尼亚盆地等发现一批巨型天然气田;(3)西太平洋深水盆地群油气大发现主要集中在中国南海和东南亚海域;(4)新特提斯深水盆地群总体富气,天然气重大发现主要集中在澳大利亚西北陆架和东地中海;(5)环北极深水盆地群目前仅在巴伦支海获深水油气大发现。全球深水石油资源主要集中在大西洋中、南段;天然气资源分布相对广泛,主要在大西洋深水盆地群北段、东非深水盆地群、新特提斯深水盆地群、环北极深水盆地群。未来全球深水盆地勘探存在"两老四新"六大领域,"两老"领域为大西洋深水盆地群和东西走向的新特提斯构造域深水富气盆地群,二者勘探程度相对较高,但潜力仍然很大;"四新"领域包括盐下和超深水区等深层新领域,以及环北极深水盆地群和滨西太平洋深水盆地群,新领域将是今后深水油气勘探的主要领域。 展开更多
关键词 深水 油气大发现 巴西 西非 墨西哥湾 东非 澳大利亚西北陆架 东地中海 新领域
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