Results 11 to 20 of about 367,263 (338)

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
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Recent Advances in Supercritical CO₂ Extraction of Pigments, Lipids and Bioactive Compounds from Microalgae

Molecules, 2023
Supercritical CO2 extraction is a green method that combines economic and environmental benefits. Microalgae, on the other hand, is a biomass in abundance, capable of providing a vast variety of valuable compounds, finding applications in the food ...
Soultana Tzima, Ioulia Georgiopoulou, Vasiliki Louli, Kostis Magoulas   +3 more
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Process Optimization of Microwave-Assisted Extraction of Chlorophyll, Carotenoid and Phenolic Compounds from Chlorella vulgaris and Comparison with Conventional and Supercritical Fluid Extraction

Applied Sciences, 2023
The production of bioactive products from microalgae biomass with efficient and environmentally friendly technologies is a field of great research interest.
Ioulia Georgiopoulou, Soultana Tzima, Vasiliki Louli, Kostis Magoulas   +3 more
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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
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Recovery of Bioactive Extracts from Olive Leaves Using Conventional and Microwave-Assisted Extraction with Classical and Deep Eutectic Solvents

Separations, 2022
The recovery of phenolic compounds from olive leaves (Olea europaea L.) has received special attention due to their significant potential for applications in food, nutraceuticals, cosmetics, and pharmaceuticals.
Eleni Boli, Nikos Prinos, Vasiliki Louli, Georgia Pappa, Haralambos Stamatis, Kostis Magoulas, Epaminondas Voutsas   +6 more
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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
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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
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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
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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
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Artificial Neural Network Models for Prediction of Density and Kinematic Viscosity of Different Systems of Biofuels and Their Blends with Diesel Fuel. Comparative Analysis [PDF]

Kemija u Industriji, 2020
In the present article, two models based on the artificial neural network methodology (ANN) have been optimised to predict the density (ρ) and kinematic viscosity (μ) of different systems of biofuels and their blends with diesel fuel.
Souad Belmadani, Salah Hanini, Maamar Laidi, Cherif Si-Moussa, Mabrouk Hamadache   +4 more
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