No abstract

Revisão teórica da radioatividade em água potável: Principais isótopos radioativos encontrados, seus efeitos à saúde humana e métodos de redução Theoretical review of radioactivity in drinking water: Main radioactive isotopes found, their effects on human health and methods of reduction

A técnica de irradiação de alimentos consiste em um processo físico de doses de radiação ionizante. No qual vem sendo estudada a várias décadas sendo regulamentada pelo Food and Drug Administration (FDA) desde 1963.Contudo somente no ano de 1977 liberou o uso desta modalidade a World Health Organization (WHO). No Brasil as normas nacionais em irradiação de alimentos influenciam e interferem de maneira individual ou coletiva na vida dos consumidores tendo como objetivo do trabalho discriminar e caracterizar a importância das diretrizes que envolvem a irradiação de alimentos. Para elaboração deste artigo foram realizadas revisões bibliográficas, consultas em legislações nacionais e internacionais, pesquisas em livros, sites e visita técnica ao Centro Tecnológico do Exército (CTEx). Foi Concluído que a legislação brasileira sendo a mais avançada

The image-based cargo inspection systems are generally intended to identify illegal practices. However, imaging processes from the scanning of motorized containers have been used for increasing industrial safety. This is made possible by the application of high energy particle linear accelerators (linac). Measurements of both the environmental equivalent dose rate (δH*(10), and the integrated environmental equivalent dose (H*(10) were performed. The estimation of δH*(10) and H*(10) in the scanning channel, including the driver's cab of the truck transporting the container, is critical. The aim of this study is to check the radiological safety for occasional users (drivers) by comparing the levels of δH*(10) and H*(10) with those adopted for public exposure. The study was experimentally conducted in a cargo and container inspection facility that uses a linac operating at the maximum energy of 4.5 MeV. During the in-situ measurements a SpiR-ID identifier detector Model F 8929 MGP manufactured by Mirion Technologies was used. The measurements in the driver's cab suggest that the procedure can be considered safe. However, a fast transient of δH*(10) was identified recording raised values (peaks) around 210x the threshold for public exposures in the first 9 s of each scanning procedure.

Introduction: this study takes as its object, computed tomography and the role of nurses who work at the Diagnostic Imaging Center, in patients with suspected Covid19. The general objective of the study was to know the role of the nurse who works at the Diagnostic Imaging Center in the Covid19 diagnostic process by CT scan. Specific objective focused on the characterization of the nursing work process in Computed Tomography in the Covid19 diagnosis process; as well as the performance of nurses in the complexity of care in CT scans, where the aim is to know the findings of CT scans in patients with COVID-19; and knowledge of the Nurse’s role in the imaging sector. Method: bibliographical research, in which an electronic search was carried out from the Virtual Health Library. Selecting the periodical publications of Brazilian nursing, found in the databases, MEDLINE, BDENF and LILACS. In a second moment, a questionnaire was elaborated on the role of the nurse during the anamnesis to perform the Computed Tomography in the process of diagnosing Covid19 (Appendix 1). In order to investigate the risk factors for the development of adverse reactions and provide safe venous access for the administration of the contraceptive, in addition to issues inherent in the Covid19 diagnostic process. Results: The analysis of the publications allowed us to understand and expand in a more qualified, safe and accessible way on the performance of nurses working in the Diagnostic Imaging Center for the evaluation of nurses in the Covid19 diagnosis process by CT scan. Conclusion: As it is a new topic and with few publications, it can contribute as a bibliographic reference for further research. In terms of assistance, it will help Imaging service nurses to favor their actions to combat COVID 19 and for individual and professional development, opening opportunities for new knowledge and reaffirming the power of nursing work.