Results 51 to 60 of about 10,269 (215)
Harvesting Near Earth Asteroid Resources Using Solar Sail Technology [PDF]
, 2017 Near Earth asteroids represent a wealth of material resources to support future space ventures. These resources include water from C-type asteroids for crew logistic support; liquid propellants electrolytically cracked from water to fuel crewed vehicles ...
McInnes, Colin
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Chemistry – A European Journal, EarlyView.Glycerol ethoxylate (GEO), a branched ethylene glycol derivative, both toughens commercial PLLA and accelerates its chemical recycling to L‐lactide. The lead sample, containing 10 wt.% GEO, shows 9x higher elongation at break and 6x higher tensile toughness than pure PLLA. The GEO–PLLA samples are efficiently chemically recycled to L‐lactide, even when
Madeleine L. Smith +4 more
wiley +1 more source
Dataset of bond enthalpies (εAA, εAB, εBB) in 975 binary intermetallic compounds
Data in Brief, 2021 The concept of a bond energy between a pair of atoms is well-established in chemistry and physics. In materials science, it is a fundamental parameter in the development of thermodynamic models such as the regular, quasi-chemical and sub-regular solution
Daniel Miracle +3 more
doaj +1 more source
Modelling and simulation on the tool wear in nanometric cutting [PDF]
, 2003 Tool wear is a significant factor affecting the machined surface quality. In this paper, a Molecular Dynamics (MD) simulation approach is proposed to model the wear of the diamond tool in nanometric cutting. It includes the effects of the cutting heat on
Cheng, K, Holt, R, Luo, X
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Chemie Ingenieur Technik, EarlyView.Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher +3 more
wiley +1 more source
Optimal model‐based design of experiments for parameter precision: Supercritical extraction case
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study investigates the process of chamomile oil extraction from flowers. A parameter‐distributed model consisting of a set of partial differential equations is used to describe the governing mass transfer phenomena in a cylindrical packed bed with solid chamomile particles under supercritical conditions using carbon dioxide as a solvent ...
Oliwer Sliczniuk, Pekka Oinas
wiley +1 more source
The metastable HCl · 6H2O phase – IR spectroscopy, phase transitions and kinetic/thermodynamic properties in the range 170–205 K [PDF]
Atmospheric Chemistry and Physics, 2013 In this laboratory study a multidiagnostic experimental approach including Fourier transform infrared (FTIR) absorption of 1 to 2 μm thick polycrystalline ice films, residual gas mass spectrometry (MS) and total pressure measurement were employed.
S. Chiesa, M. J. Rossi
doaj +1 more source
Remote Sensing, 2021 This project explored the integrated use of satellite, ground observations and hydrological distributed models to support water resources assessment and monitoring in High Mountain Asia (HMA). Hydrological data products were generated taking advantage of
Massimo Menenti +46 more
doaj +1 more source
Recovery of actinides from actinide-aluminium alloys by chlorination: Part I [PDF]
, 2011 Pyrochemical processes in molten LiCl–KCl are being developed in ITU for recovery of actinides from spent nuclear fuel. The fuel is anodically dissolved to the molten salt electrolyte and actinides are electrochemically reduced on solid aluminium ...
Cassayre, Laurent +6 more
core +1 more source
Vapor pressure and sublimation enthalpy of elemental technetium
Journal of the Less Common Metals, 1980 Abstract The vapor pressure of technetium metal was measured over the temperature range 2051–2348 K using Knudsen effusion mass spectrometry. The vapor pressure of technetium measured over this temperature range is R In P(atm) = {− (128.1 ± 1.5) × 10 3 T} + (23.19 ± 0.68) .
Robert G Behrens, Gary H Rinehart
openaire +2 more sources