Results 21 to 30 of about 461 (169)
The Growth of Monoraphidium sp. and Scenedesmus sp. Cells in the Presence of Thorium
The Scientific World Journal, Volume 2012, Issue 1, 2012., 2012 Toxicity of thorium by Monoraphidium sp. and Scenedesmus sp. was studied. Microalgal cultures were inoculated in ASM‐1 medium in presence and absence of thorium. Its effect was monitored by direct counting on Fuchs‐Rosenthal chamber and with software. The toxicity of thorium over the species was observed for concentrations over 50.0 mg/L. After 30 days,
Juliana Cristina de Queiroz +4 more
wiley +1 more source
The Scientific World Journal, Volume 11, Issue 1, Page 186-198, 2011., 2011 Arthropod eyes are built of repeating units named ommatidia. Each single ommatidium unit contains a cluster of photoreceptor cells surrounded by support cells and pigment cells. The insect Copium eye ommatidia include additional calcium‐phosphate deposits, not described in insects to date, which can be examined today using a combined set of modern ...
Javier Garcia-Guinea +10 more
wiley +1 more source
Dosimetric evaluation of extremities in 18F-FDG PET/CT procedure using Monte Carlo Geant4 code
Brazilian Journal of Radiation Sciences, 2019 For the dosimetric evaluation of extremities and crystalline of workers inserted in Positron Emission Tomography procedures using the 18F-FDG radiopharmaceutical, a geometric phantom of the forearm and hand with the geometric phantom ADAM was implemented
Paula Rocha Pessanha +2 more
doaj +1 more source
Brazilian Journal of Radiation Sciences, 2020 Introduction: In the nuclear medicine practice, a variety of radionuclides are handled for diagnostic and therapy which represents a significant risk of internal and external exposure for workers. Such occupational exposure requires the implementation of
Salomão Marques de Oliveira +2 more
doaj +1 more source
Brazilian Journal of Radiation Sciences, 2018 Vários países possuem sistemas de compensação para doenças radioinduzidas, tendo em vista as demandas compensatórias de indivíduos expostos à radiação ionizante por motivos ocupacionais ou em decorrência de acidentes radiológicos ou nucleares. No Brasil,
Marina Santiago de Mello Souza +2 more
doaj +1 more source
Brazilian Journal of Radiation Sciences, 2015 Na prática da Medicina Nuclear, profissionais especializados manipulam rotineiramente radiofármacos para fins de diagnóstico e terapia. O controle das incorporações de radionuclídeos pelos trabalhadores pode ser realizado por meio de técnicas de ...
Bernardo Maranhão Dantas +3 more
doaj +1 more source
Investigação da termoluminescência de alexandrita (BeAl2O4:Cr3+)
Brazilian Journal of Radiation Sciences, 2020 A alexandrita natural (BeAl2O4:Cr3+) é um mineral amplamente encontrado no Brasil e tem sido investigada para atuar como um detector de radiação ionizante (dosímetro) com o uso da técnica da termoluminescência (TL).
Neilo M. Trindade +4 more
doaj +1 more source
Brazilian Journal of Radiation Sciences, 2018 The monitoring of the activity of radionuclides of natural occurrence as 238U, 232Th, 226Ra, 40K including 210Pb is important to assess the radiological impact and human exposure due to radioactivity in estuaries.
Roberto Ferreira Carmo +7 more
doaj +1 more source
Knowledge management in radiation protection: The Goiânia accident - Learning in the face of tragedy
Brazilian Journal of Radiation Sciences, 2018 A radiological accident usually ends up bringing damage to society. The accident in Goiânia, which turns 30 years in 2017, could not be different.
Luis Carlos Jansen +1 more
doaj +1 more source
Brazilian Journal of Radiation Sciences, 2017 LNMRI has sought to develop a methodology for the identification and accurate detection of impurities emitting gamma radiation at the metrological level, aiming to meet the recommendations not only of the international pharmacopoeia, but also of CNEN and
Eduardo Bonfim De Paula +4 more
doaj +1 more source