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Thorium ore dust research applicable to mineral sands industry workers.
J Radiol Prot
January 2025
School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, AUSTRALIA.
Historically, radiation exposure to mineral sands workers arose primarily from intake of thorium associated with monazite dust generated in mineral separation plants. Research investigations in the 1990s provided greater insight into the characteristics of inhaled thorium ore dust and bioassay studies inferred that some workers had accumulated significant lung burdens of thorium. Recent changes to biokinetic models have increased the radiation dose assessed to arise from thorium intake, raising questions on the appropriateness of current assumptions used in exposure assessment and feasibility of further bioassay research.
View Article and Find Full Text PDFIntegral cross section measurement of the F( γ, n)F reaction for 12-20 MeV bremsstrahlung photons.
Appl Radiat Isot
January 2025
Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
F radioactive isotope is widely used in PET imaging for nuclear medicine. Medical linear accelerators producing high-flux bremsstrahlung beams up to 20 MeV are commonly used in radiation therapy. Hence, the production of F through photon-induced channels will reduce many of the intricacies in transportation and handling.
View Article and Find Full Text PDFEffect of gamma dose rate on the public from soil samples collected from industrial areas of Tamil Nadu.
Radiat Prot Dosimetry
January 2025
Unit of Research in Radiation Biology & Environmental Radioactivity (URRBER), P. G & Research Department of Zoology, The New College (Autonomous), Peters Road, Royapettah, Chennai, Tamil Nadu 600014, India.
The present work is the first and foremost radiological study of soil samples collected from industrial estates in Tamil Nadu. The magnetic susceptibility measurement revealed that 74.19% of the samples have medium %χFD, which denotes a commixture of coarser grains or the SP grains with a size of <0.
View Article and Find Full Text PDFThe level of radioactive cesium in food that is generally consumed in the rehydrated state can be calculated from measurements taken in the dried state using the specific weight change rate set by the Ministry of Health, Labour and Welfare. However, only a few dried foods have a specified weight change rate. Accurate specific weight change rates are critical in determining the compliance of a dried food item with Japanese maximum limits (JMLs) for radioactivity.
View Article and Find Full Text PDF[F]R91150: Improved radiosynthesis and in vivo evaluation as imaging probe for 5-HT receptors.
Eur J Med Chem
January 2025
Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, Nuclear Chemistry (INM-5), Wilhelm-Johnen-Straße, 52428, Jülich, Germany; University of Cologne, Faculty of Medicine and University Hospital Cologne, Institute of Radiochemistry and Experimental Molecular Imaging, Kerpener Straße 62, 50937, Cologne, Germany.
Serotonergic 5-HT receptors in the cortex and other forebrain structures have been linked to cognitive, emotional and memory processes. In addition, dysfunction or altered expression of these receptors is associated with neuropsychiatric and neurodegenerative disorders. [F]R91150 is a candidate radiotracer for positron emission tomography (PET) imaging of 5-HT receptors, which showed promising properties in in vitro studies.
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