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酸碱度对不同来源杜氏利什曼原虫前鞭毛体生长情况的影响
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作者 任晓岚 李素真 《中国人兽共患病杂志》 CSCD 北大核心 2001年第2期50-52,共3页
酸碱度对杜氏利什曼原虫鞭毛体 (以下简称鞭毛体 )生长情况的影响 ,前人做过许多实验 ,但对不同来源鞭毛体生长情况的对比观查 ,尚未见报道。本文阐述了酸碱度对不同来源鞭毛体生长情况的影响。值得注意的是在 pH值 4 6 ,8 6时 ,鞭毛体... 酸碱度对杜氏利什曼原虫鞭毛体 (以下简称鞭毛体 )生长情况的影响 ,前人做过许多实验 ,但对不同来源鞭毛体生长情况的对比观查 ,尚未见报道。本文阐述了酸碱度对不同来源鞭毛体生长情况的影响。值得注意的是在 pH值 4 6 ,8 6时 ,鞭毛体的生长受到抑制 ,以球型形态多见。鞭毛体是利什曼原虫的体外培养形态 ,了解酸碱度对鞭毛体生长情况的影响 ,尤其是对抗锑种株生长情况的影响 ,进一步了解鞭毛体在体外培养时的生长特性及各种株间的生长差异 ,为黑热病的防治提供一些基础资料。 展开更多
关键词 朵氏利什曼原虫前鞭毛体 酸碱度 生长 抑制 球型形态
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Trends of the Transformation of Urban Form in Arab Cities with Specific Reference to AI-Khobar
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作者 Murat Cetin 《Journal of Civil Engineering and Architecture》 2010年第10期51-58,共8页
The paper analyzes the current trends of urban transformation and delineates an underlying rationale which enables the comprehension of the current character of Arab city with particular reference to Al-Khobar. The ci... The paper analyzes the current trends of urban transformation and delineates an underlying rationale which enables the comprehension of the current character of Arab city with particular reference to Al-Khobar. The city form is subjected to a re-reading arguments of which are based on critical interpretation of the mechaitisms of urban morphology in relation not only to the impacts of global economy and building boom but also to the means of perception of urban space by different strata of the urban realm. Thus, urban morphology of the city is studied as a medium which manifests a dissociation, and thus duality, between social structure and its physical container. The paper further argues that uncritical import of urban and architectural typologies seem to create a peculiar type of urban-architectural forgery that is usually reduced to skin-deep facade mimicry. Particularly, solo performances of shiny high-rise buildings and sharp contrasts of street fronts between main arteries and back streets depict impressions of fragmentation and segregation. The emerging urban-scape that can be associated with the cultural and economic leap in Arab regions today is critically evaluated. Thus, the paper proposes judicious and critical planning policy instead of direct import of global urban-architectural typologies. 展开更多
关键词 Urban transformation Arab city morphology DUALITY CONSERVATION public realm.
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