Results 51 to 60 of about 28,390 (226)

Floral Scent Variation in Cyrtorchis letouzeyi (Orchidaceae) Between Natural Versus Cultivated Environments

Biotropica, Volume 57, Issue 3, May 2025.
Shade houses serve as effective scientific tools for ex situ cultivation and orchid conservation in tropical forests. A comparison of the floral scent chemistry of Cyrtorchis letouzeyi between shade houses and natural populations in Cameroon revealed the same dominant compound, identical qualitative compositions across sites, but variations in emission
Kamga Lydie Messado, Bruno Buatois, Vincent Droissart, Bonaventure Sonké, Florent Martos   +4 more
wiley   +1 more source

Oxydation de S-triazines par les procédés d'oxydation radicalaire. Sous-produits de réaction et constantes cinétiques de réaction [PDF]

, 1995
L'étude bibliographique montre que l'oxydation de l'atrazine en milieu aqueux par 03, 03/H202, 03/UV, H202/UV et TiO2/UV ne permet qu'une dégradation limitée du pesticide (pas d'ouverture de l'hétérocycle azoté).
De Laat, J., Doré, M., Suty, H.
core   +1 more source

Une cardiomyopathie révélant un déficit en carnitine palmitoyltransférase I: à propos d´un cas inhabituel

The Pan African Medical Journal, 2020
Les déficits en carnitine palmitoyltransférase (CPT) sont des atteintes rares dues à un défaut d´oxydation des acides gras. Patient de 10 ans sans antécédant présenteune dyspnée aigue associée à une toux productive dans un contexte fébrile et d ...
Imane Fetoui, Karima El Fakiri, Noureddine Rada, Ghizlane Draiss, Mohammed Bouskraoui   +4 more
doaj   +1 more source

Cosmetic emulsions containing innovative complex coacervates: A cross‐sectional study

International Journal of Cosmetic Science, Volume 47, Issue 2, Page 383-397, April 2025.
This study demonstrates the successful encapsulation of α‐tocopherol using non‐animal biopolymers, improving its stability and functional properties in cosmetic emulsions. The developed microcapsules enhance product texture and rheological behaviour, offering promising potential for more stable and functional skincare formulations.
Delaporte Adeline, Grisel Michel, Gore Ecaterina   +2 more
wiley   +1 more source

A modeling of the carbon-nitrogen cycle transport at Igap\'o I Lake - Londrina, Paran\'a, Brazil

, 2010
This work is a contribution to better understand the effect that domestic sewage discharges may cause in a water body, specifically Igap\'o I Lake, in Londrina, Paran\'a, Brazil.
Cirilo, Eliandro Rodrigues, Natti, Paulo Laerte, Pardo, Suellen Ribeiro, Romeiro, Neyva Maria Lopes   +3 more
core   +2 more sources

Les sols forestiers, puits de méthane : un service écosystémique méconnu

Revue Forestière Française, 2016
Le méthane est le second gaz à effet de serre, derrière le gaz carbonique, dont la concentration dans l’atmosphère augmente du fait des activités humaines.
Daniel Epron, Caroline Plain, Thomas Lerch, Jacques Ranger   +3 more
doaj   +1 more source

Influence of particle parameters on deposition onto healthy and damaged human hair

International Journal of Cosmetic Science, Volume 47, Issue 1, Page 58-72, February 2025.
This study utilized streaming potential to explore particle affinity to hair, considering factors, such as zeta potential, size, and hydrophobicity. Smaller particles deposited better than bigger particles. Neutrally charged particles were found to deposit best on both healthy and damaged hair while positively charged particles deposited the fastest at
Huijun Phoebe Tham, Kah Yuen Yip, Srinivasulu Aitipamula, Srinivasa Reddy Mothe, Wenguang Zhao, Ping Sen Choong, Ayca Altay Benetti, Wanjuan Evonne Gan, Fong Yew Leong, Praveen Thoniyot, Thomas L. Dawson Jr   +10 more
wiley   +1 more source

(+)-Methyl 3β-acetoxy-13-carboxy-19-hydroxy-11-oxo-C-norolean-18-en-30-oate γ-lactone

Acta Crystallographica Section E, 2010
The title compound, C33H46O7, is an unusual oxydation product of the therapeutic agent glycyrrhetinic acid that has, in comparison to the latter, a distinctly altered triterpene structure with one five- and four six-membered carbocycles complemented by a
Kurt Mereiter, Ulrich Jordis, Laszlo Czollner, Rawindra Gaware   +3 more
doaj   +1 more source

Effect of Oxidized Tin Interfacial Atoms on Methylcyclohexane Dehydrogenation Catalyzed by γ‐Alumina Supported Platinum Clusters

ChemCatChem, Volume 17, Issue 1, January 9, 2025.
Tin on‐tune with Platinum: Density functional theory calculations reveal the impact of oxidized interfacial tin on methylcyclohexane dehydrogenation into toluene catalyzed by Pt/alumina catalysts. It is assigned to the strengthening of metal/support interactions, and of dispersion interactions with hydrocarbons, counterbalanced by repulsive ...
Masoud Shahrokhi, Céline Chizallet, David Loffreda, Pascal Raybaud   +3 more
wiley   +1 more source

Nouveaux procédés d'oxydation chimique pour l'élimination des rejets aqueux phénolés [PDF]

, 1992
Pour faire face au problème posé par les rejets aqueux chargés en phénol, deux procédés d'épuration par voie chimique sont proposés. Les deux méthodes font appel au peroxyde d'hydrogène.
Besombes-Vailhe, J., Chakchouk, M., Debellefontaine, H., Foussard, J. N., Striolo, P.   +4 more
core   +1 more source