Open spaces in epithermal veins of the Bohemia mining district, Oregon, USA, filled with sediments during hydrothermal activity. These sediments consist mainly of chalcedony, rock fragments, and vein quartz fragments. In addition, hematite is deposited during stage three of the vein development. Observed sedimentary features include draping laminae, erosion surfaces, slumping, and graded beddin...

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: The Mars Odyssey Neutron Spectrometer has detected concentrations of hydrogen within the upper few decimeters of the martian surface using counts of thermal, epithermal, and fast neutrons [1]. Hydrogen concentrations are interpreted in terms of mass fractions of H2O , which is most likely in the form of ice at the highest latitudes and subsurface deposits of chemically/physically ...

Samples of surface soil were collected at 73 sites in the Thrace region, northwest part of Turkey. Two complementary analytical techniques, epithermal neutron activation analysis (ENAA) and atomic absorption spectrometry (AAS) with flame and graphite furnace atomization were used to determine 35 elements in the soil samples. Concentrations of As, Cd, Co, Cu, Mn, Ni, Pb and Zn were determined us...

Abstract The emission of prompt and delayed gamma rays from (n,?) (n,n´?) reactions induced by irradiation indium with epithermal fast neutrons was investigated the instrument FaNGaS operated at Heinz-Maier-Leibnitz Zentrum (MLZ) in Garching. average neutron energy spectrum 2.30 MeV. measurement done an angle 90° between beam detector. A total 136 lines which 42 are related to capture 94 inelas...

Mineralogy and chemical variations of Sulfosalts epithermal deposit Ay-Qalasi (southeast Takab, northwest Iran)

In this work we formulate the reaction theory of parity violation in compound nuclear states using Feshbach's projection operator formalism. We derive in this framework a complete set of terms that contribute to the longitudinal asymmetry measured in experiments with polarized epithermal neutrons. We also discuss the parity violating spreading width resulting from this formalism. We then use th...

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 ...

BACKGROUND We investigated the application of boron neutron capture therapy (BNCT) to suitable cancers other than glioblastoma and melanoma. Head and neck malignancies were consequently selected as adaptable cancers. We reported the clinical results of our first case treated and discussed several advantages to the application of BNCT to head and neck tumors. METHODS The patient was a 48-year-...