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151.
152.
The paper contains a review of the activities in the field of food hygiene performed by the Veterinary Public Health Unit of WHO in close collaboration with other divisions and programmes of the Organization. It gives a general understanding about the purpose and objectives of such activities in the past and present, and near future. The paper mentions the most important achievements which were reached by the Organization in meat and milk hygiene, fish and shellfish hygiene, surveillance of foodborne diseases, microbiological specifications for foods, food virology education and training in food hygiene and elaboration of a strategy on prevention and control of foodborne diseases due to food of animal origin. The paper contains 44 references, the majority of which are still available at the World Health Organization. 相似文献
153.
A system for ensuring common standards of measurements of energy illumination produced by solar radiation is considered. The
results of many years of international comparisons of a standard absolute radiometer with the standard radiometers and pyrheliometers
of other countries are presented.
__________
Translated from Izmeritel'naya Tekhnika, No. 11, pp. 72–73, November, 2005. 相似文献
154.
在虚拟现实环境下切屑空间运动轨迹的基础研究 总被引:1,自引:0,他引:1
在Visual C 6.0环境下,结合OpenGL和World Tool Kit软件,构建虚拟现实的软件平台;对相关的切屑空间运动轨迹数学模型进行推导、整理,将它们在所设置的编程环境下以程序的形式反映出来,通过各软件接口间的数据传递和相应的坐标变换准确地解算出相应的参数,实现切屑空间运动轨迹的仿真;最后通过立体眼镜等组成的硬件平台,实现了在一定加工条件下输入不同的刀具几何参数与工艺参数,真实地、对应地完成切屑形成过程的虚拟现实。 相似文献
155.
Abstract A meteorological database for the 48 contiguous states of the United States has been developed for use in indoor air pollution predictive models. The database contains predicted typical monthly meteorological statistics at the county level derived from hourly meteorological data from 208 (234 for precipitation) geographically distinct monitoring stations. Interpolation and extrapolation techniques were used to predict statistics for counties not containing a meteorological monitoring site. The LBNL database includes statistics for meteorological variables including dry-bulb temperature, dew-point temperature, barometric pressure, wind speed, wind direction, hours of precipitation, precipitation, and derived infiltration degree-days. The database consists of individual files of derived statistics for each weather variable and is potentially useful for indoor radon modeling as well as for other purposes. Each file contains data values for all 12 months and an aggregation of the 12 months up to a yearly statistic for all county centroids. A test was conducted to assess the quality of interpolated values. Examples showing the use of the database for mapping infiltration degree-days and an application of the database to a statistical correlation analysis attempting to find meteorological factors influencing indoor radon levels in the United States are discussed. 相似文献
156.
从多个角度分析了我国石化行业的专利现状及发展趋势,探讨了入世对我国石化行业的影响.并提出了一些相应的对策。 相似文献
157.
Our overall research goal is providing hypertext functionality through the WWW to hypertext-unaware information systems with minimal or no changes to the information systems. Information systems dynamically generate their contents and thus require some mapping mechanism to automatically map the generated contents to hypertext constructs (nodes, links, and link markers) instead of hypertext links being hard-coded over static contents. No systematic approach exists, however, for building mapping routines to create useful links that give users direct access to the ISs' primary functionality, give access to metainformation about IS objects, and enable annotation and ad hoc (user-declared) linking. This paper contributes a procedure for analyzing ISs and building mapping routines that supplement information systems with hypertext support. This paper also contributes an eXtensible Markup Language (XML) DTD that declares a set of elements and attributes for representing mapped information in a human-readable, machine-readable, structured, and semantic way. We implemented a prototype to demonstrate the feasibility of using XML to represent mapped information. 相似文献
158.
改革开放以来,私营经济发展迅速,以成为我国非公有制经济不可或缺补充,我国加入WTO后,私营企业面临更多的机遇和挑战.分析了我国加入WTO后对私营企业的影响和挑战,阐述了私营企业在未来发展中的应对措施. 相似文献
159.
介绍广东制造业的现状,说明在中国加入WTO的新形势下,广东成为世界制造中心的特征日益显现。阐述了广东打造世界制造中心的机遇、条件以及面临的挑战,并提出相应的策略。 相似文献
160.
谭培文 《湖南工业大学学报》2003,17(4)
正确对待哈贝马斯的当代生活世界殖民化,关键在于把当代生活世界病理分析与治疗二者区分开来。哈贝马斯为当代生活世界殖民化把脉的病理分析具有一定的合理性。而其不足之处在于他把语言交往看作是治疗当代生活世界殖民化的妙药良方。语言交往对于治疗引起当代社会生活世界殖民化病因,即金钱和权力干预有一定的意义,但是,在我国,加强社会主义物质文明和政治文明建设,才是防止金钱和权力引起生活世界殖民化的根本途径。 相似文献