Results 231 to 240 of about 494,494 (268)
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1988
Interstellar grains represent an important constituent of matter in space. They are necessary to the cooling and heating mechanisms and play an important role in the gas phase composition of molecular clouds. In addition, metallic components are important because they carry the charge inside dense clouds regulating the ion-molecule chemistry in these ...
E. Bussoletti, L. Colangeli, V. Orofino
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Interstellar grains represent an important constituent of matter in space. They are necessary to the cooling and heating mechanisms and play an important role in the gas phase composition of molecular clouds. In addition, metallic components are important because they carry the charge inside dense clouds regulating the ion-molecule chemistry in these ...
E. Bussoletti, L. Colangeli, V. Orofino
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Journal of Physics C: Solid State Physics, 1971
The conventional boltzmann-vlasov equations are solved for the case of a hot plasma with collisions such as may correspond to the conduction electrons in a semiconductor. A collision term is used which contains two relaxation times corresponding approximately to the usual momentum and energy relaxation times.
A K Jonscher, K S Rodger
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The conventional boltzmann-vlasov equations are solved for the case of a hot plasma with collisions such as may correspond to the conduction electrons in a semiconductor. A collision term is used which contains two relaxation times corresponding approximately to the usual momentum and energy relaxation times.
A K Jonscher, K S Rodger
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Cosmic Ray Bombardment of Solids in Space
1988Some aspects of the interaction of cosmic rays with solids in space are presented. We first give a short description of experimental results on some effects induced in frozen gases by impinging ions because they constitute the solid base for any reliable astrophysical application.
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Asymptotic Stability in Constrained Configuration Space for Solids
Journal of Non-Equilibrium Thermodynamics, 2009Inelastic deformation processes are studied in the framework of thermodynamics. The state of material sample is treated as a sequence of constrained equilibrium states. The authors deal with kinetic rate laws in constrained state space and introduce the configuration space of generalized coordinates.
Yang, Qiang, Bao, Jinqing, Liu, Yaoru
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1982
In the Parmenides we find a first attempt at a classification of change into locomotion (phora) and alteration (alloiōsis) (138bc). This is later expanded (155e–156b) so that we get a tripartite scheme embracing (1) (a)generation (genesis) and (b) perishing, (2) locomotion and (3) alteration: (a) combination and separation (becoming one or many), (b ...
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In the Parmenides we find a first attempt at a classification of change into locomotion (phora) and alteration (alloiōsis) (138bc). This is later expanded (155e–156b) so that we get a tripartite scheme embracing (1) (a)generation (genesis) and (b) perishing, (2) locomotion and (3) alteration: (a) combination and separation (becoming one or many), (b ...
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Efficient solid rocket propulsion for access to space
Acta Astronautica, 2010Abstract Space launch activity is expected to grow in the next few years in order to follow the current trend of space exploitation for business purpose. Granting high specific thrust and volumetric specific impulse, and counting on decades of intense development, solid rocket propulsion is a good candidate for commercial access to space, even with ...
MAGGI, FILIPPO +4 more
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Formation and Evolution of Solids in Space
1999Observational Constraints on Interstellar Dust Composition T.P. Snow. The Nature and Evolution of Interstellar Organics J.E. Chiar, Y.J. Pendleton. Tracking the Organic Refractory Component of Interstellar Dust J.M. Greenberg. MID Infrared Spectropolarimetry and the Composition of Cosmic Dust C.M. Wright, et al.
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1994
Hydrogen bond solids, as well as other kinds of moderately volatile solids (ices) are present in a great number of astronomical objects in our galaxy. Starting with the cosmic abundances of atoms, a presentations is given of hydrogen bond solids that have been detected or that have been inferred from theoretical studies as well in interstellar space as
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Hydrogen bond solids, as well as other kinds of moderately volatile solids (ices) are present in a great number of astronomical objects in our galaxy. Starting with the cosmic abundances of atoms, a presentations is given of hydrogen bond solids that have been detected or that have been inferred from theoretical studies as well in interstellar space as
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