Results 1 to 10 of about 367,164 (239)

IX. A chemical inquiry into the phenomena of human respiration [PDF]

open access: bronzePhilosophical Transactions of the Royal Society of London. (B.), 1890
A love of mountaineering is a natural inducement to inquire into the influence of altitude on the phenomena of respiration, and I began giving attention to that subject in 1875; my first results, however, were not communicated to the Royal Society till the month of March, 1878. In September, 1877, Dr. A. Mermod, then Mr. Mermod, had contributed to the “
William Marcet
openalex   +5 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

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

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

Practical Artificial Neural Network Tool for Predicting the Competitive Adsorption of Dyes on Gemini Polymeric Nanoarchitecture [PDF]

open access: yesKemija u Industriji, 2021
The objective of this study was to model the removal efficiency of ternary adsorption system using feed-forward back propagation artificial neural network (FFBP-ANN).
Abdelmadjid El Bey   +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

Home - About - Disclaimer - Privacy