Results 31 to 40 of about 155,235 (338)

Sublimation of terrestrial permafrost and the implications for ice-loss processes on Mars

open access: yesNature Communications, 2019
Sublimation of ice is rate-controlled by vapor transport away from its outer surface and may have generated landforms on Mars. In ice-cemented ground (permafrost), the lag of soil particles remaining after ice loss decreases subsequent sublimation ...
T. Douglas, M. Mellon
semanticscholar   +1 more source

A sublimation heat engine [PDF]

open access: yes, 2015
Heat engines are based on the physical realization of a thermodynamic cycle, most famously the liquid–vapour Rankine cycle used for steam engines. Here we present a sublimation heat engine, which can convert temperature differences into mechanical work ...
Ledesma-Aguilar, Rodrigo   +3 more
core   +1 more source

Sublimation Enthalpies of Organic Compounds: A Very Large Database with a Match to Crystal Structure Determinations and a Comparison with Lattice Energies

open access: yesCrystal Growth & Design, 2019
A database of 1655 critically evaluated sublimation enthalpies of organic compounds is presented. Experimental techniques are briefly reviewed. The consistency of experimental measurements is critically analyzed also as a function of temperature.
J. Chickos, A. Gavezzotti
semanticscholar   +1 more source

Sublimation and Condensation at the Ice Sheet Surface of Mizuho Station, Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology)

open access: yesAntarctic Record, 1979
Sublimation and condensation were estimated by three different methods, that is, atmometer, bulk formula and stake methods, at Mizuho Station from February 1977 to January 1978.
Yoshiyuki FUJII
doaj   +1 more source

Quantifying snow sublimation by Eddy covariance measurements on the High Atlas Mountain of Marrakech at Tazaghart plateau, Morocco [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences
The High Atlas Mountains are a valuable source of water supply to lowland areas, in the Tensift watershed around Marrakech and play an important role in the hydrologic processes and water balance.
L. Hanich   +4 more
doaj   +1 more source

Solubility Enhancement of Ibuprofen by Adsorption onto Spherical Porous Calcium Silicate

open access: yesPharmaceutics, 2021
The solubility of a drug is higher when it is in an amorphous form than when it is in a crystalline form. To enhance the solubility of ibuprofen (IBU), a poorly water-soluble drug, we attempted to adsorb IBU onto spherical porous calcium silicate ...
Yayoi Kawano   +2 more
doaj   +1 more source

Combining Salt Doping and Matrix Sublimation for High Spatial Resolution MALDI Imaging Mass Spectrometry of Neutral Lipids.

open access: yesAnalytical Chemistry, 2019
The combination of sodium salt doping of a tissue section along with the sublimation of the matrix 2,5-dihydrobenzoic acid (DHB) was found to be an effective coating for the simultaneous detection of neutral lipids and phospholipids using matrix assisted
M. Dufresne   +3 more
semanticscholar   +1 more source

Simulation Analysis and Experimental Research on Vacuum Freeze-drying of Pitaya

open access: yesZhileng xuebao, 2022
To accurately forecast freeze-drying time, COMSOL software was used to simulate the sublimation drying process of pitaya slices based on the theory of heat and mass transfer in this study.
Zhang Tong, Yu Kezhi, Zhang Dezheng
doaj  

Modeling sublimation by computer simulation: morphology dependent effective energies

open access: yes, 1997
Solid-On-Solid (SOS) computer simulations are employed to investigate the sublimation of surfaces. We distinguish three sublimation regimes: layer-by-layer sublimation, free step flow and hindered step flow.
Aldao   +20 more
core   +2 more sources

Microstructure mapping: a new method for imaging deformation-induced microstructural features of ice on the grain scale [PDF]

open access: yes, 2006
This work presents a method of mapping deformation-related sublimation patterns, formed on the surface of ice specimens, at microscopic resolution (3-4 gm pixel(-1)).
Azuma, N.   +6 more
core   +1 more source

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