Results 41 to 50 of about 53,653 (163)

Vers des machines d'épandage plus respectueuses de l'environnement – Conception et mise en place d'indicateurs de performance

Sciences, Eaux & Territoires, 2011
L'évaluation des performances environnementales des machines d'épandages se résume actuellement par des indicateurs de répartition transversale et longitudinale obtenus selon la norme NF EN 13080 pour les épandeurs de fumier et la norme NF EN 13406 pour ...
M. ROUSSELET, J. MAZOYER, M. PRADEL
doaj   +1 more source

Caractères biogéochimiques de la matière organique dans la colonne d'eau et les sédiments d'un écosystème saumâtre: l'étang de Thau - Variations saisonnières [PDF]

, 1999
Le long de la côte méditerranéenne française du Golfe du Lion, l'étang de Thau présente des caractères assez particuliers. Il est parfois soumis à des conditions anoxiques appelées "malaigues" qui résultent de l'accumulation de matières organiques durant
Blaz, J. L., Gadel, F., Lliberia, J. L., Serve, L.   +3 more
core   +1 more source

Molecular Architecture and Single‐Molecule Magnet behavior Control by Playing with Lanthanide Ionic Radii and Bulkiness Ancillary Ligands

Chemistry – An Asian Journal, Volume 20, Issue 10, May 15, 2025.
A library of polynuclear complexes involving the ditopic [4’‐(4’’’‐pyridyl‐N‐oxide)‐1,2’:6’1’’‐bis‐(pyrazolyl)pyridine] ligand was designed from the Ln(β‐diketonate)3(H2O)n building blocks. Both ionic radii size of the lanthanide and the bulkiness of the β‐diketonate allowed the control of the final molecular architectures while the second factor ...
Haiet Douib, Bertrand Lefeuvre, Kais Dhbaibi, Jessica Flores Gonzalez, Vincent Dorcet, Fabrice Pointillart   +5 more
wiley   +1 more source

Chiral N‐Alkylfluorenyl‐Substituted N‐Heterocyclic Carbenes in the Gold(I)‐Catalyzed Enantioselective Cycloisomerization of 1,6‐Enynes

Chemistry – A European Journal, Volume 31, Issue 19, April 1, 2025.
Four chiral [AuCl(A*Flu‐NHC)] complexes (A*Flu‐NHC for 9‐alkyl‐9‐fluorenyl N‐substituted N‐heterocyclic carbene) have been prepared in only four steps using commercially available enantiopure styrene oxide as chiral source. Their use as pre‐catalysts in the enantioselective cycloisomerization of 1,6‐enynes gave up to 72 % ee. A remarkable hydrogen bond
Robin Heinrich, Giovany Marie‐Rose, Christophe Gourlaouen, Patrick Pale, Eric Brenner, Aurélien Blanc   +5 more
wiley   +1 more source

Synthesis of C-Arylnucleoside Analogues

Molecules, 2015
Modified nucleoside analogues are of great biological importance as antiviral and antitumoral agents. There is special interest in the preparation of C-aryl nucleosides with an aromatic ring in different positions of the glycone for their biological ...
Christophe Len, Gérald Enderlin
doaj   +1 more source

Rôle d'une fumure organique en culture cotonnière intensive sur des sols peu évolués d'apport du Nord-Cameroun [PDF]

, 1978
Après plusieurs années de culture continue de coton, seul un apport régulier de fumure organique permet de maintenir les rendements en coton-graine aux alentours de 2 tonnes par hectare.
Dubernard, Jacques
core  

Improved understanding of soil water content at field capacity and estimates from pedotransfer functions

Irrigation and Drainage, Volume 74, Issue 2, Page 516-528, April 2025.
Abstract The soil water content at field capacity, θFC, is a fundamental variable for irrigation and agriculture. This study determines the optimal tension (−33 or −10 kPa) of deriving θFC which best matches the in situ field measurements following the Veihmeyer procedure.
Samira Jaefarzade Andabili, Ali Rasoulzadeh, Javad Ramezani Moghadam, Joseph Alexander Paul Pollacco, Jesús Fernández‐Gálvez   +4 more
wiley   +1 more source

Opinion and report of the French Agency for Food, Environmental and Occupational Health & Safety (ANSES) relating to an analysis of the health risks associated with exposure to caterpillars with stinging hairs and the development of management recommendations

Food Risk Assess Europe, Volume 3, Issue 2, April 2025.
Abstract Several species of Lepidoptera with caterpillars bearing urticating hairs are increasing their range in metropolitan France from year to year, such as the pine processionary (Thaumetopoea pityocampa Denis et Schiffermüller 1775) whose presence was historically limited to the south of France, and which is gradually being observed in the north ...
Nicolas Desneux, Andrea Battisti, Anne‐Sophie Brinquin, Rudy Caparros‐Megido, Gilbert Gault, Carole Kerdelhué, Stéphane Krebs, Myriam Mérad, Catherine Pecquet, Tina Rambonilaza, Thomas Le Bourgeois, Philippe Castagnone, Thierry Candresse, Nicolas Desneux, Sandrine Eveillard, Florence Fontaine, Pascal Gentit, Martin Godefroidd, Lucia Guerin, Bruno Hostachy, Hervé Jactel, Eleni Kazakou, Christophe Le May, Eric Lombaert, David Markowski, Charles Manceau, Arnaud Monty, Maria Navajas, Céline Robin, Aurélien Sallé, Frédéric Suffert, Stéphan Steyer, Pierre‐Yves Teycheney, Eric Verdin, François Verheggen, Gilles Meyer, Xavier Bailly, Catherine Belloc, Stéphane Bertagnoli, Alain Boissy, Séverine Boullier, Henri‐Jean Boulouis, Eric Cardinale, Aurélie Courcoul, Alice De Boyer Des Roches, Barbara Dufour, Veasna Duong, Emmanuelle Gilot‐Fromont, Etienne Giraud, Lionel Grisot, Claire Guinat, Nadia Haddad, Elsa Jourdain, Hervé Juin, Sophie Le Bouquin‐Le Neveu, Caroline Le Maréchal, Sophie Le Poder, Yves Millemann, Pierre Mormède, Carole Peroz, Claire Ponsart, Céline Richomme, Claude Saegerman, Jean‐François Valarcher, Isabelle Vallée, Agnès Waret‐Szkuta, Natacha Woronoff‐Rehn, Georges De Sousa, Olivier Adam, Alain Aymard, Jean‐Christophe Cahuzac, Pierre Greve, Philippe Hartemann, Claire Hellio, Dominique Pessel, Vincent Richard, Christophe Soumet, Laura Maxim, Louis‐Georges Soler, Bénédicte Apouey, Luc Baumstark, Céline Bonnet, Thierry Brunelle, France Caillavet, Alain Carpentier, Thomas Coutrot, Cécile Detang‐Dessendre, Serge Garcia, Julien Gauthey, Emmanuelle Lavaine, Christine Le Clainche, Marc Leandri, Youenn Loheac, Sélim Louafi, Eric Plottu, Elodie Rouviere, Maïder Saint‐Jean, Denis Salles, Léa Tardieu, Jean‐Christophe Vergnaud, Jens Abildtrup, Catherine Collignon, Karine Fiore, Emeline Hily, Sandra Sinno‐Tellier, Emmanuel Gachet   +105 more
wiley   +1 more source

Evaluation de l’état de dégradation biologique des sols en matière organique dans la commune rurale de Kouka (Burkina Faso) [PDF]

Revue Hybrides
La matière organique est primordiale pour la santé biologique, chimique et physique des sols. Son abondance dans le sol contribue à la fertilité, tandis que son absence est un signe majeur de la dégradation des sols.
Jacques Konkobo, Talaridia Fulgence Idani, Zelbié Bassolé , Yélézouomin Stéphane Corentin Somé   +3 more
doaj  

Gestion de la matière organique dans les sols tropicaux [PDF]

Tropicultura, 1991
Organic matter management in the Tropical soils. Organic matter is the key of fertilization in tropical conditions and is closely associated with the cultural systems by/te dominant kinds of transfer : internal or external, vertical or horizontal ...
Wouters, J.
doaj