Cesium Isotopes
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Estudo de equações de calibração para metodologia do 137Cs de determinação da erosão de solos
Usando o método do 137Cs, foram estudadas duas parcelas de erosão próximos à cidade de Londrina. A classe de solo estudada foi a latossolo roxo-distrófico (LRd), com índices de erosão medidos desde de 1976 pelo Instituto Agronômico do Paraná (IAPAR), utilizando o método convencional. Através da redução percentual do conteúdo de 137Cs em relaç�
Publicado em: 2001
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2. No Significant Contribution of Arbuscular Mycorrhizal Fungi to Transfer of Radiocesium from Soil to Plants
The diffuse pollution by fission and activation products following nuclear accidents and weapons testing is of major public concern. Among the nuclides that pose a serious risk if they enter the human food chain are the cesium isotopes 137Cs and 134Cs (with half-lives of 30 and 2 years, respectively). The biogeochemical cycling of these isotopes in forest ec
American Society for Microbiology.
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3. Plasmid marker rescue transformation proceeds by breakage-reunion in Bacillus subtilis.
Bacillus subtilis carrying a plasmid which replicates with a copy number of about 1 was transformed with linearized homologous plasmid DNA labeled with the heavy isotopes 2H and 15N, in the presence of 32Pi and 6-(p-hydroxyphenylazo)-uracil to inhibit DNA replication. Plasmid DNA was isolated from the transformed culture and fractionated in cesium chloride d