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地下工程渗漏现象较为普遍且后果严重,因此防渗堵漏技术应用在工程实践中作用显著;本 文结合具体工程分析了地下工程渗漏原因,提出了防渗堵漏针对性较强的技术措施。 相似文献
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试论管理会计在企业中的应用 总被引：1，自引：1，他引：1
本文从管理会计在企业中应用的核心问题－－成本管理出发，分析管理会计在我国企业中的应用现状、我国理论界关于成本管理创新及加强成本管理可借鉴的方法等几个大问题，力求推动企业管理会计工作的开展，充分发挥管理会计在企业生产经营管理和决策中的作用。 相似文献
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透过生态、可持续发展的视野,对建筑用木材在生态性、高效性及可持续运用等方面进行剖析,力图破除当前对木材在建筑中使用的片面认识,唤起建筑界、林业界对木材在当代建筑中大量使用的新的思考和探索。 相似文献
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Di Stasi LC Oliveira GP Carvalhaes MA Queiroz M Tien OS Kakinami SH Reis MS 《Fitoterapia》2002,73(1):69-91
A survey of medicinal plants used by rural and urban inhabitants of the three cities of the Tropical Atlantic Forest, Region of Vale do Ribeira, State of S?o Paulo, Brazil was performed by means of 200 interviews with medicinal plant users and extractors and, traditional healers. One hundred fourteen herbal remedies were recorded and the following information reported: Latin, vernacular and English names, plant part used, forms of preparation and application of the herbal remedies, medicinal or food uses, areas of plant collection, economic importance (when available) and other data. 相似文献
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Twenty-five extracts obtained from 14 plant species used in the traditional medicine in Yemen have been screened for cytotoxic activity against human ECV-304 cells. Extracts of Dracaena cinnabari, Eucalyptus camaldulensis, Euclea divinorum, Euphorbia cactus, Pulicaria crispa, and Withania somnifera displayed a remarkable activity. 相似文献
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在高边坡锚固施工过程中,一般采用边削坡边对边坡进行锚固的方法进行施工,避免完全削坡后造成无锚固施工操作面的困难,但在二次高边坡锚固整治或高边坡坍塌整治中该方法有较大的局限性.现以缅甸瑞丽江电站进场公路K48+600～K48+800段高边坡大塌方整治工程为例子,论述了支架式岩体锚杆锚固施工方法. 相似文献
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杂草具有其独特的生物学特性,在城市绿地建设过程中尚未引起人们的重视。城市景观建设过程中可以控制性地利用乡土杂草,降低城市绿地的建设成本,增加物种的多样性,促进城市生态环境的恢复,增添绿地的自然野趣。 相似文献
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A survey carried out during the years 2001-2002 revealed that people who lived in the villages of Yunt Mountain use large number of plants for medicinal purposes. Fifty-four medicinal plants belonging to 32 family were recorded. Among them 41 species were wild and 13 species were cultivated plants. 相似文献
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Summary The ashes of some medicinally used tropical woods were characterised. These were Afzelia africana, Alstonia congensis, Antiaris africana, Terminalia ivorensis, Azadirachta indica, Ricinodendron heudelotti, Chlorophora excelsa and Daniellia ogea. The ashes were obtained by treating wood in a muffle furnace, after which the ashes dissolved in distilled water. The very alkaline solutions obtained were analysed for Na+, K+, Ca2+, Mg2+, Mn2+, Fe2+, Cu2+, Cl-, SO
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and PO
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. Due to wide medicinal application of these wood species experiments were made to determine the cations and anions which may be active ingredients in the compounds (drugs) used in the treatment of differet ailments.The authors are thankful to A. Amusan of Soil Science Department, Obafemi Awolowo University, Ile-lfe for technical assistance 相似文献
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Summary Owing principally to kinetic energy losses, flow in which the flow rate is not linearly proportional to the applied pressure difference occurs to a considerable extent when the Reynolds number exeeds the length-to radius ratio of the capillary. When capillaries are used for flow or viscosity measurements corrections must be made for kinetic energy losses, end-effects and gas expansion. The results obtained for air flow through straight circular capillaries imply that non-linear flow may occur in wood and other heterogeneous porous media at Reynolds numbers in the region of 0.1 to 10.This work was carried out at the University of Aberdeen while J. F. Siau was on sabbatical leave and was partially supported by the NATO Senior Scientists Programme. The authors thank Professor J. D. Matthews for providing facilities for this work. 相似文献