Results 41 to 50 of about 67,280 (303)

Comparação e aplicação de dois modelos matemáticos no estudo do metabolismo de fósforo em suínos Comparison and application of two mathematical models in the study of the phosphorus in pig metabolism

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, Dorinha Miriam Silber Schmidt Vitti, Alexandre de Oliveira Teixeira, João Batista Lopes   +3 more
doaj   +1 more source

Hyperoxia Induced Alteration of Chromatin Structure in Human Bone Marrow Derived Primary Mesenchymal Stromal Cells

Advanced Biology, EarlyView.
Chromatin, which organizes DNA, changes its structure to adapt to stress like high oxygen levels (hyperoxia), which can damage cells. Researchers developed a technique to observe these changes and found variability in how different parts of chromatin remodel.
Lauren Monroe, Samantha Kaonis, Natalie Calahan, Neda Kabi, Soham Ghosh   +4 more
wiley   +1 more source

Absorção real, perdas endógenas e exigência de fósforo para suínos em final de crescimento, pela técnica da diluição isotópica True absorption and endogenous fecal losses of phosphorus for swine in the final of the growing based on the isotopic dilution techinique

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 1999
Determinaram-se as perdas endógenas mínimas, a exigência de fósforo e a absorção real do fósforo do fosfato bicálcico em suínos no final da fase de crescimento, pela técnica da diluição isotópica. Foram utilizados 20 leitões híbridos comerciais, com peso
J.B. Lopes, D.M.S.S. Vitti, A.V. Figueirêdo, H.P. Barbosa   +3 more
doaj   +1 more source

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  

Reactive and mixing processes governing ammonium and nitrate coexistence in a polluted coastal aquifer [PDF]

, 2018
A comprehensive hydrochemical, stable isotope and microbial analyses characterisation has been performed to evaluate the sources of groundwater, nitrogen pollution and degradation processes occurring in an industrial polluted coastal aquifer in the ...
Aravena, Ramon, Colombani, Nicolò, Mastrocicco, Micòl, Petitta, Marco, Sbarbati, Chiara   +4 more
core   +2 more sources

Low‐Activation Compositionally Complex Alloys for Advanced Nuclear Applications—A Review

Advanced Engineering Materials, EarlyView.
Low‐activation compositionally complex alloys (LACCAs) are advanced metallic materials primarily composed of low‐activation elements, offering advantages such as rapid compliance with operational standards and safe recyclability. This review highlights their potential for extreme high‐temperature irradiation environments as structural materials for ...
Yangfan Wang, Hanliang Zhu, Zhiyang Wang, Zhijun Qiu, Xiao Wang, Zengxi Pan, Hongtao Zhu, Mingxing Zhang, Huijun Li   +8 more
wiley   +1 more source

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, Arnaud-Godet, Florent, Blichert-Toft, Janne, Delile, Hugo, Goiran, Jean-Philippe, Keenan-Jones, Duncan   +5 more
core   +4 more sources

Designing of Self‐Dispersing Soft Dendritic Microcleaners for Microplastics Capture and Recovery

Advanced Functional Materials, EarlyView.
The capture and recovery of microplastics from open aquatic systems is a complex problem, which necessitates nontrivial solutions. The principles of a comprehensive multistage process based on sustainably sourced microcleaners with hierarchical morphology are demonstrated.
Haeleen Hong, Rachel S. Bang, Lucille Verster, Orlin D. Velev   +3 more
wiley   +1 more source

Eficiência de fosfato natural reativo aplicado em misturas com superfosfato triplo em milho e soja Efficiency of reactive phosphate rock applied in mixtures with triple superphosphate in maize and soybean

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, Takashi Muraoka, Héctor Manuel Coraspe-León, Fernanda Latanze Mendes   +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, Vivian Lo Tierzo, Juliana Célia Denadai, Cibele Regina de Souza Kruliski, Carlos Ducatti, Dirlei Antonio Berto, Maria Márcia Pereira Sartori   +6 more
doaj   +1 more source