Scientific bases

The two levels of NAAQS, primary and secondary, are Hsted in Table 3. Primary standards were set to protect pubHc health within an adequate margin of safety secondary standards, where appHcable, were chosen to protect pubHc welfare, including vegetation. According to the CAA, the scientific bases for the NAAQS are to be reviewed every 5 years so that the NAAQS levels reflect current knowledge. In practice, however, the review cycle takes considerably longer. 

Preparation of Gatalysts I (Scientific Bases for the Preparation of Heterogeneous Gatalysts)," in B. Dehnon, P. A. Jacobs, and G. Poncelet, eds.. Proceedings of the First International Symposium, Bmssels, Oct. 14—17, 1975, Elsevier Science Publishing Go., Inc., New York, 1976. 

Nomenclature. Colloidal systems necessarily consist of at least two phases, the coUoid and the continuous medium or environment in which it resides, and their properties gready depend on the composition and stmcture of each phase. Therefore, it is useful to classify coUoids according to their states of subdivision and agglomeration, and with respect to the dispersing medium. The possible classifications of colloidal systems are given in Table 2. The variety of systems represented in this table underscores the idea that the problems associated with coUoids are usuaUy interdisciplinary in nature and that a broad scientific base is required to understand them completely. 

Volume 1 Preparation of Catalysts I.Scientific Bases for the Preparation of Heterogeneous Catalysts. Proceedings of the First International Symposium, Brussels, October 14-17,1975... 

Volume 3 Preparation of Catalysts II. Scientific Bases for the Preparation of Heterogeneous... 

Acid-Base Catalysis II, Sapporo, Japan, December 2-4,1993 edited by H. Hattori, M. Misono and Y. Ono Volume91 Preparation of Catalysts VI. Scientific Bases forthe Preparation of... 

Over the last 60 years criteria and methods based upon resuits of catastrophic events have been used for the design of expl facilities. The criteria and methods did not include a detailed or reliable quantitative basis for assessing the degree of protection afforded by the protective facility. Recentiy, extensive research and development programs have been undertaken to establish procedures which permit a more sound and scientifically based approach to current and future design requirements (Refs 1 to 9)... 

Volume 16 Preparatim of Catalysts Ml. Scientific Bases for the Preparation of Heterogeneous Cataiysts. Proceedings of the Third International Symposium, Louvain-la-Neuve, September 8-9, 1982 edited by 6. Poncelet, P. Gr ige and P.A. Jacobs... 

Volume 91 Preparation of Catalysts VI. Scientific Bases tor the Preparation of... 

In recent years, regulatory authorities and industry associations have undertaken several important initiatives to promote international harmonization of regulatory requirements. These efforts are designed to enhance harmonization and are committed to seeking scientifically based harmonized technical procedures for pharmaceutical development. These efforts are undertaken under the auspices of the International Conference on Harmonization (ICH), which is organized to provide an opportunity for tripartite... 

Does the site provide clinically or scientifically based evidence to support its statements Does it provide referenced information ... 

IPCC, 2001. The Scientific Bases-Climate Change, http //www.ipcc.ch... 

Proceedings of the 2nd International FEZA (Federation of the European Zeolite Associations) Conference, Taormina, Italy, September 1-5, 2002 edited by R. Aiello, G. Giordano and F. Testa Scientific Bases for the Preparation of Heterogeneous Catalysts Proceedings of the 8th International Symposium, Louvain-la-Neuve, Leuven, Belgium, September 9-12, 2002... 

Federal Register. Scientific Bases for Identification of Potential Carcinogens and Estimation of Risk Request for Comments on Report, Federal Register, 44, 1979, pp. 39858-39879. 

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