Formation of Molecular Hydrogen on Amorphous Water Ice: Influence of Morphology and Ultraviolet Exposure

2002 ◽  
Vol 581 (1) ◽  
pp. 276-284 ◽  
Author(s):  
J. E. Roser ◽  
G. Manico ◽  
V. Pirronello ◽  
G. Vidali
Keyword(s):  
Molecular Hydrogen ◽  
Water Ice ◽  
Ultraviolet Exposure

Isotopic segregation of molecular hydrogen on water ice surface at low temperature

2005 ◽  
Vol 404 (1-3) ◽  
pp. 187-191 ◽  
Author(s):  
F. Dulieu ◽  
L. Amiaud ◽  
S. Baouche ◽  
A. Momeni ◽  
J.-H. Fillion ◽  
...  
Keyword(s):  
Low Temperature ◽  
Molecular Hydrogen ◽  
Water Ice ◽  
Ice Surface

Physisorption and desorption of H2, HD and D2 on amorphous solid water ice. Effect on mixing isotopologue on statistical population of adsorption sites

2015 ◽  
Vol 17 (44) ◽  
pp. 30148-30157 ◽  
Author(s):  
Lionel Amiaud ◽  
Jean-Hugues Fillion ◽  
François Dulieu ◽  
Anouchah Momeni ◽  
Jean-Louis Lemaire
Keyword(s):  
Molecular Hydrogen ◽  
Amorphous Solid ◽  
Statistical Population ◽  
Adsorption And Desorption ◽  
Amorphous Solid Water ◽  
Water Ice ◽  
Adsorption Sites ◽  
Solid Water

We study the adsorption and desorption of three isotopologues of molecular hydrogen mixed on 10 ML of porous amorphous water ice (ASW) deposited at 10 K.

Laboratory Measurements of Molecular Hydrogen Formation on Amorphous Water Ice

2001 ◽  
Vol 548 (2) ◽  
pp. L253-L256 ◽  
Author(s):  
G. Manicò ◽  
G. Ragunì ◽  
V. Pirronello ◽  
J. E. Roser ◽  
G. Vidali
Keyword(s):  
Molecular Hydrogen ◽  
Laboratory Measurements ◽  
Hydrogen Formation ◽  
Water Ice

scholarly journals The formation of molecular hydrogen from water ice in the lunar regolith by energetic charged particles

2013 ◽  
Vol 118 (6) ◽  
pp. 1257-1264 ◽  
Author(s):  
A. P. Jordan ◽  
T. J. Stubbs ◽  
C. J. Joyce ◽  
N. A. Schwadron ◽  
H. E. Spence ◽  
...  
Keyword(s):  
Molecular Hydrogen ◽  
Lunar Regolith ◽  
Charged Particles ◽  
Water Ice

Low‐energy electron‐stimulated production of molecular hydrogen from amorphous water ice

1994 ◽  
Vol 101 (4) ◽  
pp. 3282-3286 ◽  
Author(s):  
Greg A. Kimmel ◽  
Thomas M. Orlando ◽  
Christian Vézina ◽  
Léon Sanche
Keyword(s):  
Molecular Hydrogen ◽  
Low Energy ◽  
Energy Electron ◽  
Water Ice ◽  
Low Energy Electron

Isotopic Segregation of Molecular Hydrogen on Water Ice Surface at Low Temperature: Importance for Interstellar Grain Chemistry

2006 ◽  
Author(s):  
L. Amiaud ◽  
F. Dulieu ◽  
S. Baouche ◽  
J. H. Fillion ◽  
A. Momeni ◽  
...  
Keyword(s):  
Low Temperature ◽  
Molecular Hydrogen ◽  
Water Ice ◽  
Ice Surface

Wordly Corrasions: Philology and Narrative inWorstward Ho

2017 ◽  
Vol 26 (1) ◽  
pp. 53-68
Author(s):  
Mark Byron
Keyword(s):  
First Principles ◽  
Alexander Pope ◽  
Literary Texts ◽  
Water Ice ◽  
Primary Documents ◽  
Land Farming ◽  
King James Bible ◽  
A Site ◽  
Thomas Browne ◽  
Geological Formations

Scholarly research over the last twenty years has marked a profound shift in the understanding of Beckett's sources, his methods of composition, and his attitudes towards citation and allusion in manuscript documents and published texts. Such landmark studies as James Knowlson's biography, Damned to Fame (1996), and John Pilling's edition of the Dream Notebook (1999), and the availability of primary documents such as Beckett's reading notes at Reading and Trinity libraries, opened the way for a generation of work rethinking Beckett's textual habitus. Given this profound reappraisal of Beckett's material processes of composition, this paper seeks to show that Beckett's late prose work, Worstward Ho, represents a profound mediation on writing, self-citation, and habits of allusion to the literary canon. In its epic gestures, it reorients the heavenly aspiration of Dante's Commedia earthwards, invoking instead the language of agriculture, geology and masonry in the process of creating and decreating its imaginative space. Beckett's earthy epic invokes and erodes the first principles of narrative by way of philology as well as by means of deft reference to literary texts and images preoccupied with land, farming, and geological formations. This process is described in the word corrasion, a geological term referring to the erosion of rock by various forms of water, ice, snow and moraine. Textual excursions into philology in Worstward Ho also unearth the strata comprising Beckett's corpus (in particular Imagination Dead Imagine, The Lost Ones, and Ill Seen Ill Said), as well as the rock or canon upon which his own literary production is built. A close reading of Worstward Ho turns up a number of shrewd allusions to the King James Bible and Thomas Browne, as one might expect, but also perhaps surprisingly sustained affinities with the literary sensibilities of Alexander Pope and the poetry of S. T. Coleridge. The more one digs, the more Beckett's ‘little epic’ seems to become one of earthworks, bits of pipe, and masonry, a site and record of literary sedimentation.

Interaction of H2O, O2 and H2 with Proton Conducting Oxides Based on Lanthanum Scandates

2019 ◽  
pp. 88-100
Author(s):  
A. S. Farlenkov ◽  
N. A. Zhuravlev ◽  
Т. A. Denisova ◽  
М. V. Ananyev
Keyword(s):  
Water Vapor ◽  
Partial Pressure ◽  
Gas Phase ◽  
Molecular Hydrogen ◽  
Proton Magnetic Resonance ◽  
Partial Pressure Of Oxygen ◽  
Proton Conducting ◽  
Conducting Oxides ◽  
Temperature Range ◽  
Apparent Level

The research uses the method of high-temperature thermogravimetric analysis to study the processes of interaction of the gas phase in the temperature range 300–950 °C in the partial pressure ranges of oxygen 8.1–50.7 kPa, water 6.1–24.3 kPa and hydrogen 4.1 kPa with La1–xSrxScO3–α oxides (x = 0; 0.04; 0.09). In the case of an increase in the partial pressure of water vapor at a constant partial pressure of oxygen (or hydrogen) in the gas phase, the apparent level of saturation of protons is shown to increase. An increase in the apparent level of saturation of protons of the sample also occurs with an increase in the partial pressure of oxygen at a constant partial pressure of water vapor in the gas phase. The paper discusses the causes of the observed processes. The research uses the hydrogen isotope exchange method with the equilibration of the isotope composition of the gas phase to study the incorporation of hydrogen into the structure of proton-conducting oxides based on strontium-doped lanthanum scandates. The concentrations of protons and deuterons were determined in the temperature range of 300–800 °C and a hydrogen pressure of 0.2 kPa for La0.91Sr0.09ScO3–α oxide. The paper discusses the role of oxygen vacancies in the process of incorporation of protons and deuterons from the atmosphere of molecular hydrogen into the structure of the proton conducting oxides La1–xSrxScO3–α (x = 0; 0.04; 0.09). The proton magnetic resonance method was used to study the local structure in the temperature range 23–110 °C at a rotation speed of 10 kHz (MAS) for La0.96Sr0.04ScO3–α oxide after thermogravimetric measurements in an atmosphere containing water vapor, and after exposures in molecular hydrogen atmosphere. The existence of proton defects incorporated into the volume of the investigated proton oxide from both the atmosphere containing water and the atmosphere containing molecular hydrogen is unambiguously shown. The paper considers the effect of the contributions of the volume and surface of La0.96Sr0.04ScO3–α oxide on the shape of the proton magnetic resonance spectra.

Injury-Risk Evaluation in Water Ice Climbing

2009 ◽  
Vol 13 (4) ◽  
pp. 210-218 ◽  
Author(s):  
Volker Schöffl ◽  
Isabelle Schöffl ◽  
Ulrich Schwarz ◽  
Friedrich Hennig ◽  
Thomas Küpper
Keyword(s):  
Risk Evaluation ◽  
Injury Risk ◽  
Water Ice
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