Results 11 to 20 of about 2,175 (51)

Study of the relationship between mineralogical types and potential radon in rocks of the region of Serra do Gandarela – Quadrilátero Ferrífero-MG.

open access: yesBrazilian Journal of Radiation Sciences, 2021
The Quadrilátero Ferrífero (QF) is one of the most well-known metallogenetic provinces in the world and has its geological context well studied since the end of the 17th century.
Natália Fonseca Taveira   +8 more
doaj   +1 more source

Calibration of Solid State Nuclear Track Detectors CR-39 for radon study in a high concentration underground mines

open access: yesBrazilian Journal of Radiation Sciences, 2021
The Brazilian National Commission for Nuclear Energy (CNEN) establishes a reference level of 1000 Bq m-3 of radon concentration in underground mines. Solid State Nuclear Track Detectors – SSNTD is considered the main method of analysis in radon research.
Laura Takahashi   +5 more
doaj   +1 more source

Spatial resolution of a preclinical PET tomograph

open access: yesBrazilian Journal of Radiation Sciences, 2021
Positron emission tomography (PET) is an important molecular image modality and its application on preclinical research has increased during last decades.
Guilherme Cavalcante de Albuquerque Souza   +4 more
doaj   +1 more source

Development of a yz scan system for the improvement of an automatic system of radioactive seed implants in prostate brachytherapy

open access: yesBrazilian Journal of Radiation Sciences, 2021
Brachytherapy is the use of radiotherapy with insertion of radiation sources close to the site that needs treatment. It has become an extremely sought-after option by research fields for its impressive efficiency and practicality.
Leonardo Santiago Melgaço Silva
doaj   +1 more source

Source-detector effective solid angle calculation using MCNP6 code

open access: yesBrazilian Journal of Radiation Sciences, 2021
Nuclear techniques based on the attenuation of gamma radiation are used in the industry to calculate flow rate, determine fluid density, predict inorganic scale in oil pipelines, evaluate industrial mixers, among other applications. In order to use these
Roos Sophia de Freitas Dam   +3 more
doaj   +1 more source

APPLICATION OF GAMMA RADIATION IN PEA (PISUM SATIVUM L.) IN NATURA TO INHIBIT SPROUTING AND INCREASE SHELF LIFE

open access: yesBrazilian Journal of Radiation Sciences, 2021
The irradiation of fresh post-harvest foods has as main interests: inhibit sprouting, increase shelf life, reduce or delay damage caused by insects and diseases.
Valter Arthur   +1 more
doaj   +1 more source

X-RAY SPECTROMETRY FROM A MICROCT SYSTEM

open access: yesBrazilian Journal of Radiation Sciences, 2021
X-ray production is of fundamental importance for several applications, among these is the Microcomputed tomography technique (microCT). It is used to conduct studies in different areas of research such as industry, dentistry, archaeology and biomedicine.
Hugo Romberg   +5 more
doaj   +1 more source

Preliminary studies on electron beam irradiation as a treatment method of radioactive oil sludge

open access: yesBrazilian Journal of Radiation Sciences, 2021
Radiation-induced advanced oxidation processes have been proposed for the treatment of various types of wastes. However, electron beam technologies for the removal of recalcitrant compounds in petroleum wastes are still poorly understood.
Ana Paula Gimenes Tessaro   +4 more
doaj   +1 more source

Development of an environmental monitoring station for HPGe detectors

open access: yesBrazilian Journal of Radiation Sciences, 2021
Neutron Activation Analysis (NAA) is a well-established nondestructive analytic technique where the gamma radiation emitted by an irradiated sample is analyzed using an HPGe detector.
Gleiser Rodrigues de Melo   +3 more
doaj   +1 more source

On the feasibility of producing Lu-177 in the IEA-R1 reactor via the direct route

open access: yesBrazilian Journal of Radiation Sciences, 2021
Over the last years the 177Lu radioisotope has attracted great interest for the use in therapeutic and diagnostic procedures simultaneously, being what is now called a theranostic radioisotope. There are mainly two ways of producing this radioisotope, by
Guilherme Soares Zahn   +5 more
doaj   +1 more source

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