background: several landmine detection methods, based on nuclear techniques, have been suggested during the recent years. neutron energy moderation, neutron-induced gamma emission, neutron and gamma attenuation, and fast neutron backscattering are nuclear-based methods used for landmine detection. the aim of this study is to use backscattered neutron for landmine detection. materials and method...

Introduction I is a well known fact that the ingestion of an optimum amount of lluoride during the developmental period of the crowns of the teeth renders them more resistant to caries. It is possible that other trace elements may also assist in reducing the incidence of the disease: for example, by influencing the solubility of the calci­ fied dental tissues, by producing changes in the morpho...

The chlorine concentration in Superpozz (SPZ) cement concrete was analyzed using a newly designed prompt gamma-ray neutron activation (PGNAA) setup utilizing a portable neutron generator. The setup, which mainly consists of a neutron source along with its moderator placed side by side with a shielded gamma-ray detector, allows determining chloride concentration in a concrete structure from one ...

Abstract Humans have always been exposed to different types of natural and cosmic radiation. At present we experience 83 % radiation, for example from granite marbles, building materials such as concrete, brick, granite, or drywall. However, although these are potential sources radon, they rarely the cause a high level pollution in building.Ashlar is material volcanic origin comprising heteroge...

Prompt gamma-ray neutron activation analysis (PGNAA) is now a proven method for the identification of chemical warfare agents and explosives in military projectiles and storage containers. Idaho National Laboratory is developing a next-generation PGNAA instrument based on the new Ortec Detective mechanically-cooled HPGe detector and a neutron generator. In this paper we review PGNAA analysis of...

Accepted: October 29, 1985 The problems regarding storage and pre-neutron activation analysis treatment for the elements aluminrun. calcium, vanadium, selenium, copper, iodine, zinc, manganese, and magnesium in a urine matrix are reviewed. The type of collection and storage procedure and pre-neutron activation analysis treatment of urine depend on the specific trace element; that is, its inhere...

The research in NANE group is focused on the development of the NAA (Neutron Activation Analysis) methodologies and on their application to environment, nutrition and epidemiology studies. NANE is a multidisciplinary group that has the collaboration of researchers from different fields of science: environment, chemistry, physics, environmental health, biology, biochemistry and geology. The capa...

background: high density concrete is extensively used for efficient radiation attenuation in radiotherapy rooms and nuclear reactors. over the past eight years, some efficient galena-based concrete samples for shielding x or gamma rays was produced. the goal of this study was to produce a novel high density concrete against neutron and photon radiations using tourmaline and galena. materials an...