Results 61 to 70 of about 26,492 (206)

Descrição e fatores modeladores da dieta e ecologia da alimentação de girinos neotropicais: Um estudo de caso e uma revisão abrangente

open access: yesAustral Ecology, Volume 49, Issue 1, January 2024.
Resumo Os girinos são componentes importantes de muitas teias alimentares aquáticas, pois influenciam as populações em outros níveis tróficos e, consequentemente, a transferência de energia entre os ecossistemas aquáticos e terrestres. O que os girinos consomem é um fator chave para suas funções ecológicas. As assembleias de anuros neotropicais incluem
Iara Matias Gonçalves   +4 more
wiley   +1 more source

Center of Isotope: actions for the benefit of public health

open access: yesNucleus, 2019
To commemorate the 500th anniversary of the city of Havana, the Isotope Center reviews its activity since its creation. The production of radionuclidemarked compounds and other radiochemical work at the Institute of Nuclear Physics, inaugurated in 1969 ...
J Cruz Arencibia   +4 more
doaj  

High methane concentrations in tidal salt marsh soils: Where does the methane go?

open access: yesGlobal Change Biology, Volume 30, Issue 1, January 2024.
Salt marsh soils can contain high concentrations of methane, but what happens to this gas? There are a few possibilities, including vertical and lateral transport, storage within the soil, and/or oxidation resulting in transport as carbon dioxide or dissolved inorganic carbon.
Margaret Capooci   +8 more
wiley   +1 more source

Quality criteria of the radiopharmaceutical suspensions used in radiosynoviorthesis

open access: yesNucleus, 2017
The quality criteria of radioactive dispersions used in radiosynovectomy are examined, taking into account the requirements of the Pharmacopoeia for the Chromic Phosphate P-32 of Mallinckrodt, recommendations for the use of approved radiopharmaceuticals ...
Jorge Cruz Arencibia   +3 more
doaj  

Modos de ocupación del bosque patagónico de la vertiente oriental de Los Andes: aportes desde la ecología isotópica [PDF]

open access: yes, 2014
In this paper we discuss the contribution of stable isotopes of carbon and nitrogen to the problem of human occupation of the forest on the eastern slope of the Andes. An initial characterization of forest isotopic ecology is presented on the basis of 58
Fernández, Pablo Marcelo   +1 more
core   +3 more sources

New hydrochemical and isotopic data in the karstic spring of Maro (Nerja, Málaga). Considerations on the origin of solutes and on the influence of the vadose zone ventilation [PDF]

open access: yes, 2016
The previously stated model concerning the behaviour of the karstic spring of Maro is corroborated with new data from the 2004-2014 period. Sulphate isotopes allow linking the origin of solutes with the dissolution of Mesozoic gypsum.
Benavente Herrera, José   +4 more
core  

Determinação da origem geográfica de vestígios utilizando isótopos estáveis: base científica e potencial de uso no Brasil

open access: yesRevista Brasileira de Ciências Policiais, 2019
As ciencias forenses baseiam-se na analise tecnico-cientifica dos vestigios de crimes. A utilizacao de isotopos estaveis para determinacao da origem geografica de vestigios (atribuicao isotopica) ja e realizada em diversas partes do mundo e em variados ...
Fábio José Mota Costa   +2 more
semanticscholar   +1 more source

Occupational and public exposures in RIT of brain tumors in Cuba

open access: yesNucleus, 2009
The first phase of the clinical trial using the humanized monoclonal antibody h-R3 (Nimotuzumab) labelled with , for radioimmunotherapy of brain malignant was performed during the period 2002-2005 in Cuba.
Zayda Haydeé Amador Balbona   +2 more
doaj  

Repaso a la evidencia isotópica sobre alimentación en la prehistoria valenciana durante el Mesolítico y el Neolítico [PDF]

open access: yes, 2016
Los análisis de isótopos estables son una herramienta fundamental a la hora de reconstruir la alimentación de poblaciones prehistóricas. Hasta hace poco este tipo de análisis no se había aplicado en nuestra tierra.
Salazar García, Domingo Carlos
core   +1 more source

Comparación de la medición de actividad de con activímetros en medicina nuclear en Cuba

open access: yesNucleus, 2008
Se presentan los resultados de la comparación nacional de la medición de actividad de con activímetros, organizada en Cuba en el 2007. Estos resultados contribuyen a establecer la incertidumbre y la trazabilidad de los valores de actividad de ...
Pilar Oropesa Verdecia   +2 more
doaj  

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