By Edgar Morin
ISBN-10: 2020120887
ISBN-13: 9782020120883
Les sciences humaines n'ont pas judgment of right and wrong des caractères physiques et biologiques des phénomènes humains. Les sciences naturelles n'ont pas sense of right and wrong de leur inscription dans une tradition, une société, une histoire. Les sciences n'ont pas moral sense de leur rôle dans l. a. société. Les sciences n'ont pas moral sense qui leur manque une sense of right and wrong. Mais de partout naît le besoin d'une technological know-how avec judgment of right and wrong. Il est temps de prendre moral sense de l. a. complexité de toute réalité -physique, biologique, humaine, sociale, politique -et de los angeles réalité de los angeles complexité. Il est temps de prendre judgment of right and wrong qu'une technological know-how privée de réflexion et qu'une philosophie purement spéculative sont insuffisantes. sense of right and wrong sans technology et technology sans sense of right and wrong sont mutilées et mutilantes.
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Sample text
After addition of the methyl methacrylate the polymerization is easily followed by the decrease of intensity of the bands specific to the vinyl groups. In the past ten years a rapid development has taken place in the study of porous glasses. Effective catalysts and substrates for 50 H. H. DUNKEN catalysts have been developed for biological syntheses (Pilkington, 1972; Weetall, 1973; Heyer et ai, 1977; Bettelheim, 1979). , 1975; Zdanov, 1979). The effectiveness and selectivity of porous glasses for catalysis and separation depend on the functionality of the sur face groups and the pore size and structure.
In the case of H 2 0 a possible reaction mech anism has already been developed. An addition reaction of HX on the silicon atom leads secondarily to splitting and reaction of the silicon-oxygen bridge. ''Strained" silicon-oxygen bridges are espe cially reactive in this way: =Si— O—Si= + H X - * =SiX + H—OSi= Nitrogen-containing molecules that are electron donors, such as NH3, amine, and pyridine especially, catalyze surface reactions with silanol groups and lead through an intermediate state to the dissocia tive reaction of HX and rupture of the silicone-oxygen bridge (Bok- 48 H.
The determination of specific sur face quantities for the glass surface from adsorption isotherms is likewise not without problems. There are many methods of measurement and data treatment to overcome these difficulties (Gregg and Sing, 1967; Komarov, 1977), which, however, lead to certain experimental limitations. The ad sorbing particles must form a monolayer on the surface. Micropores are a problem. A further requirement is knowledge of the types of sites needed for adsorbing atoms or molecules.
Science avec conscience by Edgar Morin
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