Results 81 to 90 of about 10,269 (215)

Enthalpie de sublimation du soufre α : mesure calorimétrique

open access: yesJournal de Physique III, 1993
L'existence d'une phase vapeur de composition complexe au-dessus de certains éléments rend délicate la définition d'une enthalpie d'évaporation par atome-gramme de l'élément : dans le cas du soufre α, nous avons utilisé une méthode calorimétrique directe qui conduit à : ΔHvap(298,15K)= 13,05±0,1 kJ/atome-gramme.
Chastel, R., Ezzine, M.
openaire   +2 more sources

Using Intermediate-Luminosity Optical Transients (ILOTs) to reveal extended extra-solar Kuiper belt objects

open access: yes, 2016
We suggest that in the rare case of an Intermediate-Luminosity Optical Transient (ILOTs) event, evaporation of extra-solar Kuiper belt objects (ExtraKBOs) at distances of d ~ 500 - 10000AU from the ILOT can be detected. If the ILOT lasts for 1 month to a
Bear, Ealeal, Soker, Noam
core   +1 more source

Thermodynamics and kinetics of heterogeneous reactions [PDF]

open access: yes
Thermodynamics and kinetics of sublimation, catalytic, and oxidation ...
Batty, J. C., Stickney, R. E.
core   +1 more source

Orbital debris removal with solar concentrators [PDF]

open access: yes, 2010
In 1993 solar concentrators were first proposed to deflect asteroids away from a collision course with the Earth. The original concept was expanded by the authors, and proved to be effective and technologically feasible.
Maddock, Christie   +2 more
core  

Giant ripples on comet 67P/Churyumov-Gerasimenko sculpted by sunset thermal wind

open access: yes, 2017
Explaining the unexpected presence of dune-like patterns at the surface of the comet 67P/Churyumov-Gerasimenko requires conceptual and quantitative advances in the understanding of surface and outgassing processes. We show here that vapor flow emitted by
Andreotti, B., Claudin, P., Jia, P.
core   +3 more sources

Containerless high temperature property measurements by atomic fluorescence [PDF]

open access: yes
Laser induced fluorescence (LIF) techniques for containerless study of high temperature processes and material properties was studied. Gas jet and electromagnetic levitation and electromagnetic and laser heating techniques are used with LIF in earth ...
Schiffman, R. A., Walker, C. A.
core   +1 more source

Design and Development of Vapor Absorption Refrigeration System for Rural Dwellers [PDF]

open access: yes, 2012
In this study, the experimental analysis of the performance of vapor absorption system was developed and developed. The influence of generator, evaporator and condenser’s temperatures on the system performance was studied using gas burner as source of ...
Adekeye, T.   +2 more
core  

Reinterpretation of Mariner 9 IRIS data on the basics of a simulation of radiative-conductive transfer in the dust-laden Martian atmosphere [PDF]

open access: yes
A reinterpretation of the convective heat transport concept is presented for the IRIS measurements as an essential energy transfer mechanism. Thermal convection in a radiatively heated ground atmosphere system is discussed along with CO2 sublimation and ...
Pallmann, A. J.
core   +1 more source

Demonstration of the range over which the Langley Research Center digital computer charring ablation program (CHAP) can be used with confidence: Comparisons of CHAP predictions and test data for three ablation materials [PDF]

open access: yes
Comparisons of ablation calculations with the charring ablation computer code and ablation test data are presented over a wide range of environmental conditions in air for three materials: low-density nylon phenolic, Avcoat 5026-39HC/G, and a filled ...
Green, K. A., Moyer, C. B.
core   +1 more source

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