Results 11 to 20 of about 5,444,424 (222)

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

, 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 ...
A. Bianconi, A. Bianconi, A. Bianconi, A. Bussmann-Holder, A. J. Leggett, Alessandro Ricci, Andrea Perali, Antonio Bianconi, Antonio Valletta, Davide Innocenti, I. M. Lifshitz, I. M. Lifshitz, Nicola Poccia, Sergio Caprara   +13 more
core   +2 more sources

Does Augmented Reality Help to Understand Chemical Phenomena during Hands-On Experiments?-Implications for Cognitive Load and Learning

Multimodal Technologies and Interaction, 2023
Chemical phenomena are only observable on a macroscopic level, whereas they are explained by entities on a non-visible level. Students often demonstrate limited ability to link these different levels.
Hendrik Peeters, Sebastian Habig, Sabine Fechner   +2 more
semanticscholar   +1 more source

Distance phenomena in high-dimensional chemical descriptor spaces : consequences for similarity-based approaches [PDF]

, 2009
Rupp, Matthias, Schneider, Gisbert (Prof. Dr.)   +1 more
core   +3 more sources

Supercritical CO₂ Extraction of High-Added Value Compounds from Chlorella vulgaris: Experimental Design, Modelling and Optimization

Molecules, 2022
Microalgae are well-known for their high-added value compounds and their recovery is currently of great interest. The aim of this work is the recovery of such components from Chlorella vulgaris through supercritical fluid extraction (SFE) with CO2.
Ioulia Georgiopoulou, Soultana Tzima, Vasiliki Louli, Kostis Magoulas   +3 more
doaj   +1 more source

Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165

Molecules, 2022
The surface tension of aqueous solutions of Triton X-165 with rhamnolipid or surfactin mixtures was measured. The obtained results were applied for the determination of the concentration and composition of the Triton X-165 and biosurfactants mixture at ...
Edyta Rekiel, Anna Zdziennicka, Katarzyna Szymczyk, Bronisław Jańczuk   +3 more
doaj   +1 more source

Modelling the Drying Kinetics of Apple (Golab Variety): Fractional Calculus vs Semi-empirical Models [PDF]

Kemija u Industriji, 2021
In this work, two novel models have been proposed based on semi-empirical and factional calculus incorporating non-integer time derivatives in the Fick’s first law of anomalous diffusion.
Abdelkader Mahdad, Maamar Laidi, Salah Hanini, Mohamed Hentabli, Mohamed Benhelal   +4 more
doaj   +1 more source

Comparative Study of Conventional, Microwave-Assisted and Supercritical Fluid Extraction of Bioactive Compounds from Microalgae: The Case of Scenedesmus obliquus

Separations, 2023
The recovery of bioactive products with green processes is a critical topic for the research and industry fields. In this work, the application of solid–liquid (SLE), microwave-assisted extraction (MAE) with aq.
Ioulia Georgiopoulou, Vasiliki Louli, Kostis Magoulas   +2 more
doaj   +1 more source

Extraction of Bioactive Compounds from Ulva lactuca

Applied Sciences, 2022
Macroalgae Ulva lactuca, has been employed as a natural source for the production of extracts with potent bioactivity. The biochemical characterization showed that the macroalgae biomass contains a remarkable amount of the polysaccharide Ulvan (49.9 wt%)
Sofia Pappou, Maria Myrto Dardavila, Maria G. Savvidou, Vasiliki Louli, Kostis Magoulas, Epaminondas Voutsas   +5 more
doaj   +1 more source

Problems of training scientific and pedagogical staff in chemistry in pre-revolutionary universities of Ukraine (19th – early 20th centuries)

Вісник Харківського національного університету: Серія xімія, 2021
The article identifies a number of problems that arose in the process of training students in chemistry at Ukrainian universities in the 19th – early 20th centuries.
Sergii Kulish
doaj   +1 more source

Electrochemical impedance spectroscopy as a diagnostic tool for passive direct methanol fuel cells

Energy Reports, 2022
Passive direct methanol fuel cells (pDMFCs) are a promising power source for portable electronic devices since they achieve higher power densities than the traditional batteries, and use a liquid fuel, methanol, which is easy to handle, storage and ...
B.A. Braz, C.S. Moreira, V.B. Oliveira, A.M.F.R. Pinto   +3 more
doaj   +1 more source