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141.
数字畜牧是动物卫生领域的重要发展趋势。本文着重讨论GIS技术在动物疫病防控中的应用,并以辽宁省畜禽分布定位及重大动物疫病防控调度指挥系统的建设为实例提出基于SuperMap GIS平台构建动物疫病防控系统的解决方案,从而为我国畜牧业信息化建设提供参考。 相似文献
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"红肉病"文蛤(Meretrix meretrix Linnaeus)中发现的3种病毒样颗粒 总被引:3,自引:1,他引:3
本文报道了在患“红肉病”文蛤组织中发现的 3种病毒样颗粒。 1种主要存在于鳃上皮下的结缔组织中 ,呈球形或椭球形 ,大小 (5 0~ 6 0 ) nm× (5 0~ 110 ) nm,无囊膜包裹。另 1种为球形 ,直径 16 0~ 180 nm,有囊膜 ,存在于外套膜上皮细胞及结缔组织细胞质中。第 3种存在于消化盲囊上皮细胞质内 ,为无囊膜包裹的球形病毒样颗粒 ,直径为 5 0~ 80 nm。 相似文献
143.
海水养殖斜带石斑鱼溃疡病病原菌(溶藻弧菌)的初步研究 总被引:15,自引:1,他引:15
从患溃疡病的斜带石斑鱼肝脏分离到 1株细菌EpGS0 2 10 0 1,人工感染试验结果证明该菌是斜带石斑鱼的病原菌 ,对斜带石斑鱼的半致死剂量为 2 .0× 10 5CFU·g-1。对EpGS0 2 10 0 1进行了生理生化特性指标测定、API细菌鉴定系统和 16SrRNA基因序列比较鉴定。结果表明 ,该菌为溶藻弧菌。药敏试验结果表明 :头孢曲松、环丙沙星、依诺沙星、氧氟沙星、复方新诺明及阿米卡星对该菌有明显的抑制作用。 相似文献
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Cardiovascular diseases (CVDs) are a leading cause of mortality in the US. Rates of mortality vary spatially and demographically, influenced not only by individual patient characteristics but also by levels of accessibility to hospital services and facilities. In 2000, Kentucky ranked third in the nation for heart-related deaths. The purpose of this paper is to assess geographical accessibility and service utilization related to ambulatory care sensitive CVDs in Kentucky. This study utilizes the Kentucky Hospital Discharge Database to evaluate service utilization and the Compressed Mortality File to examine mortality related to CVDs. A spatial statistical comparison of the geographical distribution of service usage and travel time to hospitals assists in assessing the relationship between accessibility and health. Our findings suggest that the distribution of utilization and mortality is geographically variable. People living in rural areas travel further to services; populations residing more than 45 min from health facilities are more likely to be socially and economically marginalized. Spatial clustering of high rates of hospital utilization occurs in areas with lower accessibility. 相似文献
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Research into exposure to, and experience of, environmental risk that has an explicitly spatial focus can be broadly differentiated into two strands. The first strand focuses on the responses of communities of exposure (or the threat of exposure) to some form of environmental hazard and to the policies put in place by institutional actors to manage the hazard. The second strand addresses social inequalities in exposure to environmental hazards and seeks to correlate uneven spatial distributions of risk across different social groups. It is argued that both strands are limited by their respective understandings of space - and that the way in which vulnerable communities experience environmental risk and its management will be shaped significantly by the complex interactions of different spatialisations or constructions of space. We explore this process by examining accounts of local experience of the UK’s 2001 foot and mouth disease crisis and its management in terms of the interplay of two different spatialisations: socio-cultural marginality and political-economic peripherality. We trace the relationship between these cultural and political-economic spatialisations through an analysis of the discursive mobilisation of contrasting place rhetorics. We conclude that focusing on these rhetorics can enhance our understanding of the spatial processes which are constitutive of place identity and in turn mediate the experience of environmental risk and its management. 相似文献