Results 41 to 50 of about 661,831 (94)

UMNH:Mamm:798

open access: yes, 2022
UMNH:Mamm:798 Voucher Specimen Study ...
UMNH VZ Staff
core  

Verification of absorbed dose in blood component cases using radiochromic film EBT3

open access: yesBrazilian Journal of Radiation Sciences
Dosimetry of blood components is an essential practice to ensure the safety and efficacy of irradiation in blood products, serving as a fundamental measure to quantify and map the absorbed radiation doses.
Isabella Lellis Ferreira   +7 more
doaj   +1 more source

Preliminary chemical studies at the jericho archaeological site

open access: yesBrazilian Journal of Radiation Sciences, 2021
This study measured the chemical composition of 45 ceramic samples from the Jericho archaeological site, Palestine, by means of instrumental neutron activation analysis (INAA). The mass fraction of Na, K, La, Sm, Yb, Lu, U, Sc, Cr, Fe, Co, Zn, Rb, Cs, Ce,
Joanna Ferreira Barros   +2 more
doaj   +1 more source

Response to nuclear and radiological emergencies - Brazil and the world

open access: yesBrazilian Journal of Radiation Sciences
Some nuclear and radiological accidents happened on last decades, providing to specialized personnel a huge change in terms of protocols and safety measures.
Madison Coelho de Almeida   +3 more
doaj   +1 more source

RADIOCHROMIC FILM CALIBRATION FOR DOSIMETRY IN CHEST CT SCANS

open access: yesBrazilian Journal of Radiation Sciences, 2021
Phantoms can be used as quality control objects in computed tomography (CT) imaging and dosimetry in specific regions of interest. By means of phantom tests, alternatives can be created to optimize the acquisition protocols and thus modify the ...
Mauricio Gomez, Arnaldo Prata Mourão
doaj   +1 more source

Radiology Technologists certified as Radioprotection Supervisors in Nuclear Medicine: current scenario

open access: yesBrazilian Journal of Radiation Sciences
The presence of a radiological protection supervisor is mandatory in the staff of a nuclear medicine service according to the CNEN-NN-3.05 standard. To obtain the certification of qualification as a radiological protection supervisor, it is necessary, in
Bianca Senario Felix   +4 more
doaj   +1 more source

Comparing Deep Learning Architectures On Gamma-Spectroscopy Analysis For Nuclear Waste Characterization

open access: yesBrazilian Journal of Radiation Sciences, 2021
Neural networks, particularly deep neural networks, are used nowadays with great success in several tasks, such as image classification, image segmentation, translation, text to speech, speech to text, achieving super-human performance. In this study, we
André Gomes Lamas Otero   +2 more
doaj   +1 more source

Bioburden proliferation in vehicle air filters waste: the use of gamma radiation on fungal decontamination

open access: yesBrazilian Journal of Radiation Sciences, 2021
This study aimed to analyze the fungal contamination of air-conditioning filters waste (n=20) as an indicator of Quality Air Indoor from different car models, that were collected from 10 exchange stations located in the South, North, West, Downtown and ...
SIMONE AQUINO   +2 more
doaj   +1 more source

Optimization of methodology with solid state nuclear track detector (SSNTD)

open access: yesBrazilian Journal of Radiation Sciences, 2021
The present study aims to optimize the passive methodology with Solid state Nuclear Track Detector (SSNTD) called the sealed can technique in the physics laboratory of the Federal Institute of Paraná - Telêmaco Borba Campus. The work used a polycarbonate
Reginaldo Anderson Silva   +1 more
doaj   +1 more source

Composition and accumulation rates of eolian sediments in ODP Site 128-798

open access: yes, 1992
Preliminary bulk and clay mineralogy data as determined by XRD as well as accumulation rates of quartz and feldspar at Oki Ridge Site 798 give important information about the paleoclimate in Asia and transport mechanisms of the siliciclastic sediment ...
Stein, Ruediger   +3 more
core   +1 more source

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