Results 11 to 20 of about 1,367 (100)

Doseamento do potássio permutável com o 42K em indivíduos normais e em doentes com insuficiência renal crónica.

open access: yesActa Médica Portuguesa, 1979
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

Monazite ID-TIMS U-Pb geochronology in the LAGIR laboratory, Rio de Janeiro State University: protocols and first applications to the assembly of Gondwana supercontinent in SE-Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2014
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

open access: yesPesquisa Agropecuária Brasileira, 2012
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

Biodisponibilidade e perdas endógenas mínimas de P em dietas com níveis crescentes de fitase para suínos em crescimento pela técnica de diluição isotópica

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2003
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]

open access: yes, 2013
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

open access: yesRevista Brasileira de Ciência do Solo, 2012
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]

open access: yes, 2010
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

Análise isotópica (δ13C) e legalidade em suco e polpa de caju Isotope analysiS (δ13C) and legality in cashew juice and pulp

open access: yesBrazilian Journal of Food Technology, 2011
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]

open access: yes, 2008
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

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental
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

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