Results 11 to 20 of about 894,821 (344)

Resonant and crossover phenomena in a multiband superconductor: Tuning the chemical potential near a band edge [PDF]

open access: green, 2010
Resonances in the superconducting properties, in a regime of crossover from BCS to mixed Bose-Fermi superconductivity, are investigated in a two-band superconductor where the chemical potential is tuned near the band edge of the second mini-band ...
Davide Innocenti   +6 more
openalex   +3 more sources

Thermodynamic experimental study of an Algerian condensate gas [PDF]

open access: yesActa Periodica Technologica, 2023
When a gas field is discovered, the gas condensate is often in a gaseous single-phase state in the reservoir under pressures and at temperatures which are higher the greater the depth.
Harche Rima   +3 more
doaj   +1 more source

Hydroxytyrosol Enrichment of Olive Leaf Extracts via Membrane Separation Processes

open access: yesMembranes, 2022
Antioxidants isolated from plant materials, such as phenolics, have attracted a lot of attention because of their potential uses. This contributes to the idea of the biorefinery, which is a way to produce useful products from biomass waste. Olea europaea
Costas S. Papageorgiou   +5 more
doaj   +1 more source

High-Yield Production of a Rich-in-Hydroxytyrosol Extract from Olive (Olea europaea) Leaves

open access: yesAntioxidants, 2022
The aim of the present study was to explore the high-yield production of hydroxytyrosol, a phenolic compound with very high antioxidant capacity. Olea europaea leaves were chosen as feedstock as they contain significant amounts of oleuropein, which can ...
Costas S. Papageorgiou   +5 more
doaj   +1 more source

The Protection of Building Materials of Historical Monuments with Nanoparticle Suspensions

open access: yesHeritage, 2021
Marble and limestone have been extensively used as building materials in historical monuments. Environmental, physical, chemical and biological factors contribute to stone deterioration.
Efstathia I. Pavlakou   +6 more
doaj   +1 more source

Experimental Design and Optimization of Recovering Bioactive Compounds from Chlorella vulgaris through Conventional Extraction

open access: yesMolecules, 2021
Microalgae contain an abundance of valuable bioactive compounds such as chlorophylls, carotenoids, and phenolics and, consequently, present great commercial interest.
Ioulia Georgiopoulou   +5 more
doaj   +1 more source

Protection of Historical Mortars through Treatment with Suspensions of Nanoparticles

open access: yesHeritage, 2023
Mortars, which are very important elements for the integrity of historic monuments, consist mainly of calcium carbonate and silicates in different proportions.
Efstathia I. Pavlakou   +4 more
doaj   +1 more source

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