Results 11 to 20 of about 7,838 (225)
Revista Brasileira de Zootecnia, 2007 Com o objetivo de avaliar a fertilização nitrogenada com uréia, realizou-se um experimento com duas formas de aplicação de uréia (incorporada ou em superfície) e com calagem em duas épocas (março e agosto), para balanço do nitrogênio (15N) em pastagens ...
Patrícia Perondi Anchão Oliveira +2 more
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Hepatic steatosis in humans is associated with preserved glucagon action on amino acid metabolism [PDF]
The Journal of Clinical InvestigationBACKGROUND Amino acid (AA) concentrations are increased in prediabetes and diabetes. Since AAs stimulate glucagon secretion, which should then increase hepatic AA catabolism, it has been hypothesized that hepatic resistance (associated with hepatic fat ...
Hannah E. Christie +12 more
doaj +2 more sources
Leaching and Mass Balance of 15N‐Labeled Urea Applied to a Kentucky Bluegrass Turf [PDF]
Crop Science, 1996 The fate of urea applied to Kentucky bluegrass (Poa pratensis L.) turf was studied over a 2‐yr period using a combination of intact monolith lysimeters and small plots. Soil type was a Marlette fine sandy loam (fine‐loamy, mixed mesic Glossoboric Hapludalfs). Urea was applied at a rate of 196 kg N ha−1 yr−1 in five equal applications of 39.2 kg N ha−1,
Rieke, P. E., author +4 more
openaire +3 more sources
Rock-Sourced Nitrogen in Semi-Arid, Shale-Derived California Soils
Frontiers in Forests and Global Change, 2021 Models suggest that rock-derived nitrogen (N) inputs are of global importance to ecosystem N budgets; however, field studies demonstrating the significance of rock N inputs are rare.
Nina L. Bingham +3 more
doaj +1 more source
Wheat Response to Azospirillum Inoculation, Organic Amendments and Mineral Nitrogen Fertilizer with Application of 15N Stable Isotope Technique [PDF]
Journal of Soil Sciences and Agricultural Engineering, 2018 Wheat is one of the most important strategic crops needed for food and feeding. Due to its importance, this work aimed to demonstrate the role of organic/mineral N sources in collaboration with bio-fertilizer inoculation in enhancement of wheat growth ...
M. Soliman
doaj +1 more source
Animal, 2020 It is difficult to separate an age-dependent fall in nitrogen use efficiency (NUE; N balance/N intake) in growing ruminants from a progressively decrease in animal protein requirements over time.
M. Bernard +6 more
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Fluxomics of the Eastern Oyster for Environmental Stress Studies
Metabolites, 2014 The metabolism of 2-13C/15N-glycine and U-13C-glucose was determined in four tissue blocks (adductor muscle, stomach and digestive gland, mantle, and gills) of the Eastern oyster (Crassostrea virginica) using proton (1H) and carbon-13 (13C) nuclear ...
Andrey P. Tikunov +2 more
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The Journal of Nutrition, 2022 Sunflower is a promising protein source but data on amino acid (AA) digestibility are lacking in humans. Classically, the determination of AA digestibility requires ileal digesta sampling. The dual isotope method is minimally invasive but has not been compared to the conventional approach.This study aimed to determine the true ileal digestibility of ...
Tessier, Romain +10 more
openaire +4 more sources
Natural isotopic signatures of variations in body nitrogen fluxes: a compartmental model analysis. [PDF]
PLoS Computational Biology, 2014 Body tissues are generally 15N-enriched over the diet, with a discrimination factor (Δ15N) that varies among tissues and individuals as a function of their nutritional and physiopathological condition.
Nathalie Poupin +4 more
doaj +1 more source
Revista Brasileira de Ciência do Solo, 2008 O experimento foi realizado em canavial comercial, com a variedade SP81 3250, na Usina São Martinho (Pradópolis-SP), em Latossolo Vermelho-Escuro de textura argilosa, com o objetivo de avaliar a mineralização da palha de cana-de-açúcar e sua composição ...
André Cesar Vitti +7 more
doaj +1 more source