Download or read book Science sur la vie organique dans les profondeurs de la mer written by and published by . This book was released on with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Congress Proceedings written by and published by . This book was released on 1972 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atti written by and published by . This book was released on 1872 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1964- include reports on the meetings of the International Cartographic Association.

Download or read book La Chimie et la Mer written by Stéphane Blain and published by EDP Sciences. This book was released on 2023-09-12T00:00:00+02:00 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: La mer a toujours fait rêver les hommes. Depuis l'Antiquité, ils ont exploré, commercé, vécu grâce à la mer. C'est d'elle qu'est venue la découverte des nouveaux mondes: jadis l'Orient des épices puis l'Amérique ; au XXe siècle, le développement de la civilisation du pétrole, du commerce mondial. Mais la mer ne peut se réduire aux espaces marins qui constituent cet irremplaçable milieu de communication : c'est un monde en soi dont les immenses profondeurs fascinent et intimident encore l'humanité — le rêve de Jules Verne. La science s'est penchée sur ce monde, au cours de la dernière génération et toujours davantage ; elle lui découvre une extrême richesse — l'incroyable diversité de la vie marine, les ressources minérales insoupçonnées des grands fonds — mais aussi d'une extrême fragilité, d'une chimie délicate. « Chimie », le mot est lâché : les équilibres chimiques et la diversité des éléments qui font la mer conditionnent au-delà de son évolution le devenir même de toute notre planète. La chimie contient les clefs qu'il nous faut connaître pour vivre en harmonie avec elle pour le bien de l'humanité. Des spécialistes de l'exploration et de l'étude scientifique de la chimie de la mer nous présentent ici comment les scientifiques peuvent : «comprendre la mer », ses courants profonds planétaires et séculaires qui jouent le rôle clef dans nos prévisions sur le changement climatique ; comment aussi les hommes peuvent « profiter de la mer » en y trouvant les ressources minérales (mais seront-elles exploitables ?) pour lesquelles nos continents nous promettent la pénurie, ou biologiques par des substances nouvelles promesses de bienfaits (médicaments par exemple). Mais ici comme ailleurs, sur mer comme sur terre, nos comportements sont bien irresponsables en matière d'environnement et une troisième partie de cet ouvrage, « la chimie pour aider la mer », appelle à l'utilisation de techniques pour lutter contre la pollution. Voilà un bel ouvrage de sciences qui vise à faire comprendre le fonctionnement des océans, et leurs enjeux économiques et environnementaux. C'est un livre de scientifiques, dense, documenté, sérieux, mais accessible dès lors qu'on a gardé quelques souvenirs des classes de physique et chimie du lycée. (Magazine DDM)

Download or read book Verhandlungen des siebenten Internationalen Geographen Kongresses Berlin 1899 written by and published by . This book was released on 1901 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Careers in Marine Science written by Australian Marine Sciences Association and published by . This book was released on 1969 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Bulletin of German Literature written by Garrigue & Christern and published by . This book was released on 1858 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atti written by International Congress of Zoology and published by . This book was released on 1893 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Toward a Relevant Science written by H. F. Fletcher and published by . This book was released on 1977 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Metabolism of Sulfur and Phosphorus Containing Compounds Der Stoffwechsel der Schwefel und Phosphorhaltigen Verbindungen written by and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: it became evident that the nucleoside, riboflavin, does not itself represent the original active group of the flavoprotein; it must be considered a breakdown CH a I N NH. N N H~ C "/\/ ""-C- O H3~( V " C=O 3 II I 1 - 3 H ~ " ff . . . . . . . . . . . / NH H3CJJ"N)"C/~m N?' C II II o o lumichrome lumiflavin product of a naturally occurring flavin nucleotide. Riboflavin-5'-phosphate (FMN, for flavin mononucleotide; see formula) was indicated by THEORELL as the original active group. In 1938, WARBURG and CHRISTIAN (1938 [7]-[10]) / OH ,CH CHOH- CHOH- CHOH-CH -P" 0 2- 20 N ,N OR H~A/ V " C-O 3 II I 1 - 3 H ~/"W,7'''C/NH II o Riboflavin-5'-phosphoric acid could bring excellent evidence for the idea that the co-enzyme of another flavo protein, n. amino acid oxidase, isflavin-adenine-dinucleotide or FAD (see formula). This was supported by ABRAHAM (1939), who identified both FMN and adenosine 5'-phosphate as hydrolysis products of FAD. The discovery of the coenzyme role of FAD has induced WARBURGand coworkers to engage in some speculation concerning the possibility that FMN is itself an artifact, produced through a breakdown of FAD. This aspect will be discussed later, in connection with recent work done on OYE in THEORELL'S laboratory. o NH 2 N CH3 .

Download or read book Bulletin written by Societe des sciences de Nancy and published by . This book was released on 1906 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of African Earth Sciences written by and published by . This book was released on 1997 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin de L Institut Oc anographique written by Institut océanographique and published by . This book was released on 1910 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientia rivista di scienza written by and published by . This book was released on 1967 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Le Golfe Du Saint Laurent petit Oc an Ou Grand Estuaire written by Canada. Department of Fisheries and Oceans and published by Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir. This book was released on 1991 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a workshop, the scientific reviews and the contributed papers presented at the symposium. The document presents a brief historical summary of marine research in the Gulf; reports the discussions, conclusions and recommendations of the different working groups on oceanography (physics, biology, chemistry and sedimentology) and on the fishery (fish and invertebrates); then presents the discussions of each multidisciplinary working group, centered around how the St. Lawrence system may be used as a natural laboratory which will contribute to the solution of major long-term problems of conservation of natural resources and of the quality of the environment.

Download or read book Comptes rendus de l Acad mie des sciences written by and published by . This book was released on 1993 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Uranie written by Camille Flammarion and published by Createspace Independent Pub. This book was released on 2012-07-30 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: I WAS seventeen. She was called Uranie. Was Uranie, then, a young girl, fair, with blue eyes, innocent, but eager for knowledge? No, she was simply what she has always been, one of the nine muses; she who presided over astronomy, and whose celestial glance animated and directed the spheral choir; she was the heavenly idea hovering above earthly dullness; she had neither the palpitating flesh, nor the heart whose pulsations can be transmitted through space, nor the soft warmth of humanity; but she existed, nevertheless, in a sort of ideal world, superior to humanity, and always pure; and yet she was human enough in name and form to produce in the soul of a youth a vivid and profound impression; to awaken in that soul an undefined and undefinable sentiment of admiration: almost of love.