Results 51 to 60 of about 68,403 (337)
Nitrogen isotope analysis of ammonium and glycine [PDF]
, 2005 Stable isotope techniques can be used as a tool in nitrogen cycling studies of different ecosystems. The studies are based on measurement of the heavy (15N)- to- light (14N) isotopic ratios of nitrogen in different biospheric pools.
Norlin, Elin
core
Rome’s urban history inferred from Pb-contaminated waters trapped in its ancient harbor basins [PDF]
, 2017 Heavy metals from urban runoff preserved in sedimentary deposits record long-term economic and industrial development via the expansion and contraction of a city’s infrastructure. Lead concentrations and isotopic compositions measured in the sediments of
Albarède, Francis +5 more
core +4 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 +7 more
wiley +1 more source
Phosphorus availability and speciation in the fertosphere of three soils over 12 months
GeodermaIdentifying the effects of soil properties on the transformations of phosphorus (P) in highly concentrated fertiliser bands is a critical component in improving P fertiliser use efficiency, but little is known regarding the kinetics of P transformation ...
Brigid A. McKenna +7 more
doaj +1 more source
Revista Brasileira de Zootecnia, 2010 Avaliaram-se dois modelos matemáticos no estudo do fluxo de fósforo no metabolismo de suínos com os objetivos de destacar o modelo mais eficiente e indicar a fonte de fósforo com maior potencial para uso na nutrição de suínos.
José Aparecido Moreira +3 more
doaj +1 more source
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 +4 more
core +1 more source
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 +14 more
wiley +1 more source
Pesquisa Agropecuária Brasileira, 2009 O objetivo deste trabalho foi avaliar o efeito do modo de aplicação do superfosfato triplo (SFT), do fosfato natural reativo de Gafsa e da mistura entre essas fontes no aproveitamento do fósforo (P) por plantas de milho e de soja.
Vinícius Ide Franzini +3 more
doaj +1 more source
Isotopic carbon turnover in pig hoof and rib
Acta Scientiarum: Animal Sciences, 2021 The objective of this study was to evaluate the behavior of carbon incorporation and turnover in hoof and ribs of pigs at different periods of development in the search for tissues that reflect longer the former diet.
Regina Maria Nascimento Augusto Blaitt +6 more
doaj +1 more source
Radioactive nuclei from cosmochronology to habitability [PDF]
, 2018 In addition to long-lived radioactive nuclei like U and Th isotopes, which have been used to measure the age of the Galaxy, also radioactive nuclei with half-lives between 0.1 and 100 million years (short-lived radionuclides, SLRs) were present in the ...
Kereszturi, Á., Lugaro, M., Ott, U.
core +2 more sources