Results 51 to 60 of about 67,280 (303)

A forensic approach to understanding habitat use from stable isotope analysis of (avian) claw material [PDF]

, 2003
1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships observed between stable carbon and nitrogen isotope ratios (13C, 15N) in the claws and ...
Bearhop, S, Furness, RW, Hilton, GM, Votier, SC, Waldron, S   +4 more
core   +1 more source

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

Advanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu, Xi Zheng, Xiufan Liu, Tengyuan Gao, Nicola Pinna, Yu Wang   +5 more
wiley   +1 more source

Magnesium isotopes: a tool to understand self-enrichment in Globular Clusters

, 2018
A critical issue in the asymptotic giant branch (AGB) self-enrichment scenario for the formation of multiple populations in Globular Clusters (GCs) is the inability to reproduce the magnesium isotopic ratios, despite the model in principle can account ...
D'Antona, Franca, Dell'Agli, Flavia, Di Criscienzo, Marcella, Imbriani, Gianluca, Tailo, Marco, Ventura, Paolo   +5 more
core   +1 more source

Chlorine isotope composition in chlorofluorocarbons CFC-11, CFC-12 and CFC-113 in firn, stratospheric and tropospheric air [PDF]

, 2014
The stratospheric degradation of chlorofluorocarbons (CFCs) releases chlorine, which is a major contributor to the destruction of stratospheric ozone (O3).
Allin, S. J., Blunier, T., Capron, E., Dennis, P., Fraser, P. J., Kaiser, J., Langenfelds, R. L., Laube, J. C., Martinerie, P., Mckenna, E., Mulvaney, R., Röckmann, T., Schwander, J., Sturges, W. T., Witrant, E.   +14 more
core   +7 more sources

Narrow Inhomogeneous Distribution and Charge State Stabilization of Lead‐Vacancy Centers in Diamond

Advanced Functional Materials, EarlyView.
Lead‐vacancy (PbV) centers in diamond are expected to be a building block of quantum network nodes owing to a large ground state splitting, which suppresses phonon interaction. In this study, multiple PbV centers with nearly identical photon frequencies and stable charge state are fabricated by high‐pressure and high‐temperature anneal up to 2300 °C ...
Ryotaro Abe, Yiyang Chen, Peng Wang, Takashi Taniguchi, Masashi Miyakawa, Shinobu Onoda, Mutsuko Hatano, Takayuki Iwasaki   +7 more
wiley   +1 more source

Nitrogen 15 abundance in protein fractions of beans fertilized with (15NH4)2SO4

Scientia Agricola, 2002
Studies evaluating the protein nutritive value of beans labelled with 15N, ussing nitrogen balance and the quantitation of faecal and urinary endogenous nitrogen, determined by isotopic dilution, have been extensively used. The objective of this research
Chaud Saula Goulart, Oliveira Admar Costa de, Trivelin Paulo César Ocheuze   +2 more
doaj  

Cinética do radiofósforo em tecidos de suínos em crescimento alimentados com dietas contendo diferentes fontes de fósforo Radiophosphorus kinetics in tissues of growing swine fed diets containing different sources of phosphorus

Revista Brasileira de Zootecnia, 2004
Foram utilizados 21 leitões machos, castrados, com peso médio de 31,94 kg, para avaliar a cinética do fósforo em tecidos de suínos. Utilizou-se o delineamento em blocos casualizados, com sete tratamentos, três repetições e um animal por unidade ...
Alexandre de Oliveira Teixeira, Darci Clementino Lopes, João Batista Lopes, Dorinha M. S. S. Vitti, José Aparecido Moreira, Vanusa Patrícia de Araújo Ferreira, Sérgio Miranda Pena, Arele Arlindo Calderano   +7 more
doaj   +1 more source

New attempts to understand nanodiamond stardust [PDF]

, 2011
We report on a concerted effort aimed at understanding the origin and history of the pre-solar nanodiamonds in meteorites including the astrophysical sources of the observed isotopic abundance signatures.
A. Besmehn, A. Wallner, Arndt, Arndt, Besmehn, Braatz, Dillmann, Heck, Hohenberg, Hoppe, Huss, Huss, K. Farouqi, K. Melber, K.-L. Kratz, Kutschera, Lewis, Lodders, Marhas, Nichols, O. Hallmann, Ott, Ott, Ott, P. Hoppe, Pearson, Priller, Schönbächler, Steier, U. Ott, Wallner, Wallner, Zinner   +32 more
core   +3 more sources

Synthetic Antiferromagnetic Designer Nanodisks for High‐Performance Magnetic Separation

Advanced Healthcare Materials, EarlyView.
Micromagnetic‐modeling‐based design and scalable fabrication of synthetic antiferromagnet (SAF) magnetic disk particles (MDPs) using sputter deposition enable high‐performance magnetic separation. The SAF MDPs achieve high colloidal stability and magnetic responsiveness and enable efficient magnetic separation, outperforming conventional particles ...
Subas Scheibler, Sebastian Habermann, Alexander Gogos, Santiago Helbig, Lukas R. H. Gerken, Anna L. Neuer, Vera M. Kissling, Michal Krupinski, Mohammad Alinezhadfar, Rowena Crockett, Nico Kummer, Erik M. Mayr, Dieter Süss, Hans J. Hug, Inge K. Herrmann   +14 more
wiley   +1 more source

Fisiologia digestiva de suínos alimentados com rações contendo diferentes fontes de fósforo Digestive physiology of swine fed diets with different phosphorus sources

Revista Brasileira de Zootecnia, 2009
Objetivou-se avaliar a fonte de fósforo de melhor qualidade para uso na alimentação de suínos e que provoque menor impacto ambiental pela excreção de fósforo no ambiente.
José Aparecido Moreira, Dorinha Miriam Silber Schmidt Vitti, Alexandre de Oliveira Teixeira, João Batista Lopes   +3 more
doaj   +1 more source