Results 11 to 20 of about 1,367 (100)
Determinou-se o potássio permutável (Kp), através do método de diluição isotópica com o 42K em duas séries de indivíduos de ambos os sexos — 19 indivíduos normais (INs) e 19 insuficientes renais crónicos (IRC5) com FG < 25 ml/min.
M. Martins Prata +2 more
doaj +1 more source
The chemical and spectrometric procedures of the U-Pb geochronology method on monazites, recently installed in the LAGIR laboratory, are described in detail.
CARLA C.A. NETO +4 more
doaj +1 more source
Phosphorus utilization by corn as affected by green manure, nitrogen and phosphorus fertilizers
The objective of this work was to evaluate the utilization by corn plants of P from triple superphosphate fertilizer labeled with 32P (32P‑TSP), and of P from soil as affected by N rates and by the green manures (GM) sunn hemp (Crotalaria juncea) and ...
Edson Cabral da Silva +5 more
doaj +1 more source
O objetivo do trabalho foi avaliar rações à base de milho, farelo de soja e farelo de arroz desengordurado contendo níveis crescentes de fitase (253, 759, 1265 e 1748 UF/kg de ração), por meio da biodisponibilidade e das perdas endógenas mínimas de P com
J.A. Moreira +3 more
doaj +1 more source
Partition of the P excreted in the faeces and urine of growing pigs, fed with diets containing different levels of Phytase enzyme [PDF]
This study had as purpose to evaluate the partition of P excreted in the faeces and urine of growing pigs fed with diets containing different levels of inclusion of phytase enzyme, through the use of radioisotope P-32.).
Moreira, José Aparecido +4 more
core +3 more sources
Isotope determination of sulfur by mass spectrometry in soil samples
Sulphur plays an essential role in plants and is one of the main nutrients in several metabolic processes. It has four stable isotopes (32S, 33S, 34S, and 36S) with a natural abundance of 95.00, 0.76, 4.22, and 0.014 in atom %, respectively. A method for
Alexssandra Luiza Rodrigues Molina Rossete +3 more
doaj +1 more source
Chemical identification of chlorophenylpiperazine in seized tablets [PDF]
Designer drug is a term used to describe psychoactive drugs of abuse which are usually synthesized by modifying the molecular structures of existing drugs of abuse.
CAZENAVE, Silvia Oliveira Santos +3 more
core +2 more sources
Os objetivos deste trabalho foram utilizar o método de análise isotópica para quantificar o carbono do ciclo fotossintético C3 em suco reconstituído e polpa de caju comerciais e mensurar o limite de legalidade, baseado na legislação brasileira, para ...
Ricardo Figueira +4 more
doaj +1 more source
Utilization of nitrogen from corn plant residues and green manures by corn [PDF]
A qualidade dos resíduos vegetais de culturas comerciais e adubos verdes influencia a taxa de mineralização/imobilização de N e o respectivo aproveitamento desse nutriente pelas subseqüentes culturas.
BUZETTI, Salatiér +4 more
core +3 more sources
Molybdenum supply and biological fixation of nitrogen by two Brazilian common bean cultivars
The common bean has been considered to have low biological nitrogen fixation capacity; however, this process can be made more effective with molybdenum (Mo) supplementation.
Alinne da Silva +3 more
doaj +1 more source

