Paramagnetic characterization of fossil mollusc shells at eastern part of the old Konya lake: its importance for EPR dating.

Fossil mollusc shells are used for dating geological materials because they are well preserved throughout geological time. In this study, the radicals in the structure of fossil mollusc shells (Dreissena iconica, Valvata piscinalis, Bithynia tentaculate, Unio pictorum) collected from the Eastern Part of Old Konya Lake in Türkiye were investigated by EPR technique. For all fossil shells, microwave and temperature dependence of the signals were examined, and the signals suitable for dating are discussed.

EPR investigation of gamma-irradiated FAMOSER drug for DOSIMETRIC purposes.

Exposure to ionizing radiation can also lead to the formation of stable or unstable radicals in the structures of drugs, as in many materials. The concentrations of these radicals may show a linear dependence on the radiation dose exposed. Since drugs are materials that can be found next to or on radiation victims during a possible nuclear or radiological accident, it is very meaningful to determine the Electron Paramagnetic Resonance (EPR) dosimetric properties of stable radicals in their structures.

RADIOLOGICAL ASSESSMENT OF NATURAL RADIOACTIVITY IN A URANIUM DEPOSIT AREA: KÖPRÜBAŞI, TÜRKIYE.

In this study, the results of environmental radioactivity studies conducted in Köprübaşı, Manisa district, where Türkiye's uranium mineral exploration and processing studies were carried out, are shared. Because this is a populated area, there is a need for radio ecological dosimetry assessment to investigate the possible risk to the population. The region where radiological monitoring is carried out is discussed in two parts as the areas where uranium mineral exploration is performed and the settlements close to these areas.

Environmental radioactivity and high incidence rates of stomach and esophagus cancer in the Van Lake region: a causal relationship?

This study examined the incidence rates of cancer cases (averages for 2006-2010) and relationships with environmental radioactivity levels. Soil and water samples were collected from provincial and district centers of Van city and the outdoor gamma doses were determined using a portable gamma scintillation detector. Gross alpha and beta, (226)Ra, (232)Th, and (40)K activities were measured in both tap water and soil samples.

An EPR study on tea: identification of paramagnetic species, effect of heat and sweeteners.

Tea (Camellia Sinensis) is the most widely consumed beverage in the world, and is known to be having therapeutic, antioxidant and nutritional effects. Electron paramagnetic resonance (EPR) spectral studies made on the tea cultivated along the shore of Black Sea, Turkey, show Mn(2+) and Fe(3+) centers in green tea leaves and in black tea extract. Dry black tea flakes and dry extract show additional sharp line attributed to semiquinone radical.

EPR spectra of Cu(2+) in KH(2)PO(4) single crystals.

Cu(2+) doped single crystals of KH(2)PO(4) were investigated using EPR technique at room temperature. The spectra of the complex contains large number of overlapping lines. Five sites are resolved and four of them are compatible with the tetragonal symmetry, and the fifth one belongs to an interstitial site.