Results 31 to 40 of about 686,296 (292)

Nanostructured Palladium-Doped Silica Membrane Layer Synthesis for Hydrogen Separation: Effect of Activated Sublayers [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2019
Palladium doped silica membranes were synthesized by the sol-gel method using two different procedures. The first palladium-doped silica membrane (M1) was synthesized with a coating of four layers of silica-palladium sol.
Masoud Majidi Beiragh   +4 more
doaj   +1 more source

Comparative CFD simulations of a hydrogen fire scenario [PDF]

open access: yes, 2017
Hydrogen leakage and fire ignition and propagation are safety concerns in several industrial plants. In a nuclear fusion power plants the separation of hydrogen and tritium takes place in different steps, among which one or more electrolyzers are ...
Caruso, Gianfranco, Nobili, Matteo
core   +1 more source

Evolutionary and Pulsational Properties of Ultra-massive White Dwarfs. The Role of Oxygen-Neon Phase Separation. [PDF]

open access: yes, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018Ultra-massive hydrogen-rich white dwarf stars are expected to harbour oxygen/neon cores resulting from semidegenerate carbon burning when the progenitor ...
Althaus, L.G.   +3 more
core   +2 more sources

Gas and surface diffusion in modified γ-alumina systems [PDF]

open access: yes, 1989
The transport of pure gases through a microporous membrane is described. The alumina-based membrane (pores 2.5-4 nm) is suitable for Knudsen diffusion separation.
Burggraaf, A.J.   +2 more
core   +2 more sources

The ages of very cool hydrogen-rich white dwarfs [PDF]

open access: yes, 2000
The evolution of white dwarfs is essentially a cooling process that depends primarily on the energy stored in their degenerate cores and on the transparency of their envelopes.
D. Saumon   +8 more
core   +2 more sources

Single-Atom Site Photocatalysts Boosting Organic Synthesis: The Integration of a Metal Active Site and Photosensitive Unit

open access: yesNanomaterials
Metallaphotoredox catalysis merges the powerful bond-forming abilities of transition metal catalysis with unique electron or energy transfer pathways accessible in photoexcited states, injecting new vitality into organic synthesis.
Haoyue Sun   +5 more
doaj   +1 more source

Study and Development of a Mini-Tube Gas Separator Utilizing the Soret Effect

open access: yesJournal of Thermal Science and Technology, 2012
The Soret effect is a phenomenon in which a temperature gradient gives rise to a concentration gradient. In this study, we attempted a simple technique for the separation of hydrogen from a gas mixture by utilizing the Soret effect.
Shunsuke KUWATANI   +2 more
doaj   +1 more source

Segmented phase of ultraviolet (UV) curable thermoset polyurethanes-graphite (TPU-G) composites [PDF]

open access: yes, 2019
Segmented thermoset polymeric materials properties mainly classified through its carbonyl hydrogen bonding. The addition of graphite particle loading in polymeric materials tailored the functional characteristic of the composites. Therefore, the carbonyl
Abdullah, M. F. L.   +2 more
core   +1 more source

Insights into the application of microfluidic platforms in enhanced oil recovery

open access: yesPetroleum
Enhanced oil recovery (EOR) technologies are used to recover most of the trapped crude oil from our limited reserves. With the escalating energy demand, EOR will achieve substantial economic benefits and greatly help in the exploitation of natural oil ...
Fadi Dawaymeh   +3 more
doaj   +1 more source

Bio-hythane production from food waste by dark fermentation coupled with anaerobic digestion process: A long-term pilot scale experience [PDF]

open access: yes, 2012
In this paper are presented the results of the investigation on optimal process operational conditions of thermophilic dark fermentation and anaerobic digestion of food waste, testing a long term run, applying an organic loading rate of 16.3 kgTVS/m3d in
Bolzonella, David   +4 more
core   +1 more source

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