Titlebook: Origin of Life; Proceedings of the T Yecheskel Wolman Conference proceedings 1981 D. Reidel Publishing Company, Dordrecht, Holland 1981 Cam

纹章

Osteoporosis

公猪

SAGE

Chemical Evolution and Plate Tectonics,ute a reducing, acidic, clay rich, anhydrous to hydrous gradient system that can vary in temperature from 1100°C underlying magma to 63°C water. Since these conditions occur along a sea floor spreading zone there may be an important link between the origin and evolution of the Earth’s crust and chemical evolution.

共和国

enfeeble

978-94-009-8422-6D. Reidel Publishing Company, Dordrecht, Holland 1981

积云

Molecules in Interstellar Clouds,n is chosen as an example of a “giant” molecular cloud and hence a formation site for massive stars. The Taurus Molecular Clouds, in contrast, may be the future birthplace of solar-type stars. Molecular species identified in these regions are tabulated.

cinder

Comets and the Origin of Life,nd chemical state of comets. The latter position points out the possibility in some comets of an extended thermal history, which might have led to the production of biologically significant macromolecules.

Kinetic

Nitrogen Compounds in Carbonaceous Meteorites: A Reassessment,laboratory. The positive identification of the pyrimidine uracil and the purines adenine, guanine, xanthine and hypoxanthine is reported. The .-triazines melamine, ammeline, ammelide and cyanuric acid could not be detected in any meteorite, above a detection limit of 50 ppb.

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