[en] Modern reconstruction algorithms and their impact on image quality are analyzed. An assessment of the change in the standardized accumulation index (SUV) and the region of interest (metabolic volume, ROI) depending on the reconstruction parameters are considered. (authors)

[en] The linear quadratic model (LQ) is widely used to predict tumor control and toxicity after conventional radiotherapy and to determine the optimal treatment plan. In this study we analyze the applicability of LQ model for estimation of radiation dose when overall treatment time varies. (authors)

[en] Research results of lead containing in the soils and bottom sediments represented which will be consider as background concentrations for the analysis of the possible chemical effects of Belarusian nuclear power plant on the environment are presented. The ability of vegetation to lead accumulation was analyzed. (authors)

[en] The main information resources on nuclear medicine, provided by IAEA, are described. These are bibliographic information system INIS and Human Health Campus. The intensively developing NUMDAB database is described in details. (authors)

[en] It is proposed to create an ontological model describing terms and concepts in the field of nuclear science and technologies, which is based on the thesaurus of the International Nuclear Information System (INIS). The model is focused on improving of the input data processing as well as increasing efficiency information retrievals in the data store at using of browsers. The ontological model can be used also to solve other problems related to the processing of nuclear information. (authors)

[en] This article discusses the effectiveness of using the software Machine Performance Chesk installed on the medical linear accelerator of the new generation. The characteristics subject to program control for compliance with the established standard procedures are analyzed. Test checks of the linear accelerator were performed by the software along with standard procedures. Identified and justified the need to share this software with the standard procedures of the national quality assurance program. (authors)

[en] The environment and the population of the planet today are subject to various environmental risks. The risk of radioactive contamination of the environment requires increased attention, since the consequences of radiation disasters are especially damaging to the environment. The main sources of the threat of radioactive contamination are objects of the atomic industry, as well as nuclear weapons and terrorism. The use of radiation portal monitor systems at various potentially dangerous facilities is the main preventive measure to suppress the illicit trafficking of radioactive materials and allows for the radiation safety of the population. (authors)

[en] An original method for analyzing the fluorescent parameters of CdSe/ZnS nanoparticles in model aqueous systems and colon tissues based on the Stark effect created by local electric fields of the nearest (Helmholtz double layer) microenvironment are proposed. The mechanism of nanoparticle response in aqueous media with strong alkaline or acidic properties as well as in benign or malignant neoplasms as a result of its dipole moment or polarizability changes is discussed. Interpretation of data in terms of Stark spectroscopy is confirmed by time resolved fluorescence spectroscopy data. (authors)

[en] The proceeding includes materials of reports of 19-th international scientific conference 'Sakharov readings 2019: Environmental problems of XXI century', which was held on May 23-24, 2019 in the International A. Sakharov Environmental Institute at the Belarus State University (Minsk, Belarus). Part 3 of the proceeding contains reports about environmental problems, renewable energy technologies and energy management, medical physics, nuclear medicine, information systems and technologies in ecology and medicine. The proceeding is intended for wide area of the specialists in ecology and adjacent sciences, teachers, post-graduate students and students of higher schools. (authors) (authors)

[en] Energy efficient plasma technologies have been successfully applied for decades in the field of material processing. In particular, low-temperature plasma has been used for catalyst synthesis. It was shown that impregnation with plasmonic silver (Ag) nanoparticles (NPs) improved the activity of plasma treated catalysts. In this study, the influence of Ag NPs was investigated on the optical characteristics of the plasma treated photocatalysts. Zinc oxide (ZnO) was chosen as a photocatalyst. The plasma treatment was performed in dielectric barrier discharge (DBD) plasma. The catalysts were characterized by photoluminescence (PL). The UV-VIS spectroscopy was used to measure the optical band gap. (authors)