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Improvements in the biological shielding of the BNCT facility at the IEA-R1 reactor
(Sao Paulo: ABEN, 2011, 2014)
Improvements at the biological shielding of BNCT research facility in the IEA-R1 reactor
(Sao Paulo: ABEN, 2009, 2014)
Hemiodus iratapuru, a new species of Hemiodontidae from the Rio Jari, Amazon Basin, Brazil (Teleostei, Characiformes)
(Wiley-Blackwell, 2013-04-01)
Hemiodus iratapuru, a new species of the Hemiodontidae from the Rio Iratapuru, a left bank tributary of the Rio Jari, Amazon Basin, Brazil, is described. the new species is diagnosed from other species of Hemiodus by ...
The evolution of dermal shield vascularization in Testudinata and Pseudosuchia: phylogenetic constraints versus ecophysiological adaptations
(The Royal Society, 2020-01)
Studies on living turtles have demonstrated that shells are involved in the resistance to hypoxia during apnea via bone acidosis buffering; a process which is complemented with cutaneous respiration, transpharyngeal and ...
Multiple Quaternary Refugia in the Eastern Guiana Shield Revealed by Comparative Phylogeography of 12 Frog Species
(OXFORD UNIV PRESSOXFORD, 2012)
The Guiana Shield (GS) is one of the most pristine regions of Amazonia and biologically one of the richest areas on Earth. How and when this massive diversity arose remains the subject of considerable debate. The prevailing ...
Study of entrance surface skin dose in veterinary radiology
(2009-12-01)
This study aims the evaluation of the radiation dose levels involved in veterinary radiology and to contribute to review the procedures for performing radiographic exams in animals in the Department of Veterinary Radiology ...
Measurement of orthovoltage X-ray intensity with a lithium niobate transducer
(2009-12-01)
A microcontrolled instrument for measuring the energy fluence rate (or intensity) of X-ray pulses in the orthovoltage range of 120 to 300 kV is described. The prototype instrument consists of a pyroelectric sensor, a ...