Spéciation du tritium organiquement lié dans les matrices environnementales

Autor: Nivesse, Anne-Laure

Publikováno v: Radiochimie. Ecole nationale supérieure Mines-Télécom Atlantique, 2020. Français. ⟨NNT : 2020IMTA0216⟩

Tritium is the radioactive isotope of hydrogen and can thus integrate the organic molecules of a living organism following the water cycle and form the organically bound tritium fraction (OBT). The existence of two forms of OBT is commonly accepted:

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b5de8a53060a1ec7a3aa961b84320c82
https://tel.archives-ouvertes.fr/tel-03305159

Experimental characterization of the equilibrium isotopic fractionation between aqueous species and natural solids : the systems aqueous Si - amorphous SiO2 and aqueous Mg - brucite

Autor: Stamm, Franziska Maria

Publikováno v: Geochemistry. Université Paul Sabatier-Toulouse III, 2019. English. ⟨NNT : 2019TOU30069⟩

Silicon (Si) and Magnesium (Mg) are major elements in rock-forming minerals, biological systems and seawater. Characterizing the isotopic composition of these elements in inorganic and organic environments makes it possible to better constrain their

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______212::75f7c2563a27b79fe997664d7add9881
https://tel.archives-ouvertes.fr/tel-02928969/document

The role of soil pH on soil carbonic anhydrase activity

Autor: Joana Sauze, Samuel P. Jones, Lisa Wingate, Steven Wohl, Jérôme Ogée

Publikováno v: Biogeosciences
Biogeosciences, European Geosciences Union, 2018, 15 (2), pp.597-612. ⟨10.5194/bg-15-597-2018⟩
Biogeosciences, Vol 15, Pp 597-612 (2018)
Biogeosciences 2 (15), 597-612. (2018)

Carbonic anhydrases (CAs) are metalloenzymes present in plants and microorganisms that catalyse the interconversion of CO2 and water to bicarbonate and protons. Because oxygen isotopes are also exchanged during this reaction, the presence of CA also

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f3f4ea267a938339fde54cf6b68c75d
https://hal.inrae.fr/hal-02627194/document

Evaluation of compound-specific N isotopes analysis in key amino acids to predict feed efficiency in growing lambs

Autor: Cantalapiedra-Hijar, Gonzalo, Prache, Sophie, Tea, Illa, Faure, Sandrine, Chantelauze, Céline, Ortigues Marty, Isabelle

Publikováno v: 5. EAAP Symposium on Energy and Protein Metabolism and Nutrition
5. EAAP Symposium on Energy and Protein Metabolism and Nutrition, Sep 2016, Cracovie, Poland. 2 p., 2016, 5. EAAP Symposium on Energy and Protein Metabolism and Nutrition
5. EAAP Symposium on Energy and Protein Metabolism and Nutrition, Sep 2016, Cracovie, Poland. 2 p., 2016
5. EAAP Symposium on Energy and Protein Metabolism and Nutrition. 2016; 5. EAAP Symposium on Energy and Protein Metabolism and Nutrition, Cracovie, POL, 2016-09-12-2016-09-15

To measure feed efficiency in growing ruminants we proposed an improved isotopic method based on natural 15 N abundance (δ 15 N). Individual feed conversion efficiency (FCE) was measured for 75 days in 48 growing lambs fed diets based on Lucerne and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0088b7b5c000a039d674afbed746d42b
https://hal.archives-ouvertes.fr/hal-01594943

Ca3Co4O9+δ, cathodes innovantes : optimisation de la microstructure et de la composition

Autor: Mignardi, Giuliano

Cette thèse porte sur l’optimisation en termes de microstructure et de composition des propriétés électrochimiques du composé Ca3Co4O9+δ pour une application comme cathode pour Pile à Combustible à Oxyde. En utilisant la sérigraphie comme

Externí odkaz: http://www.theses.fr/2014LIL10155/document