forty seven sediment cores recovered from the south china sea coasts along the east coast of peninsular malaysia were analysed for as, cd, cr, cu, hg, ni, pb and zn using instrumental neutron activation analysis. the results indicate a homogeneous distribution except for as and pb in all stations. assessment of heavy metal pollution in marine sediments requires knowledge of pre-anthropogenic me...

background in the golestan cohort study that was launched to investigate the causes of esophageal cancer, a complete biospecimen bank was established for storage of collected blood, urine, hair, and nail samples. the objective of this study was to evaluate the feasibility of nail samples as a biomarker of selected trace elements status. methods thirty toenail samples were selected randomly from...

background: prompt gamma neutron activation analysis (pgnaa) is known as a non-invasive technique capable of measuring elemental concentration in voluminous samples in a short period of time. also it is a valuable diagnostic tool for total body elemental measurements. 252cf and 241am-be sources which are usually used in this method, generate not only neutrons, but also emit high-energy and unwa...

Introduction: The Monte Carlo simulation is used to enhance reliability in the experiments related to nuclear instruments. in addition, that is used to calculate the different components of the neutron and gamma ray fluxes in boron neutron capture therapy(BNCT) and neutron capture (NCT)applications. BNCT is one of the methods in radiotherapy, that is used the neutron beam for ki...

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more than 30 mineral elements have been found with different key functions in helping plants and animals to survive and live healthy. as a direct result, they have always attracted the attention of scientists. the quest is to find some efficient analytical and quantitative procedures in this study to determine some mineral and trace elements of iranian crocus sativus l. corms. several studies h...