The Spallation Neutron Source (SNS), currently under construction at Oak Ridge National Laboratory with an anticipated start-up in early 2006, will provide the most intense pulsed beams of cold neutrons in the world. At a projected power of 1.4 MW, the time averaged fluxes and fluences of the SNS will approach those of high flux reactors. One of the flight paths on the cold, coupled moderator w...

The neutron activation of shielding materials and the generated decay gamma radiation are well-known issues in terms occupational exposure. Though trace elements concretes can be dominant sources produced activity such cases, their concentrations often missing from input data shielding-related Monte Carlo simulations. For this reason, three concrete types were studied, that considered European ...

BACKGROUND Cell culture conditions can greatly influence the results of nanoparticle (NP) uptake assays. In this study, 10 nm gold nanoparticles (AuNPs) and RAW 264.7 macrophages were used as a model system, while instrumental neutron activation analysis (NAA) was used as the elemental analysis technique to determine AuNP levels produced by the various culturing conditions. Static plate-based a...

One hundred and nineteen samples of clay (n = 42), rock and sand temper (n = 7), and pottery (n = 70) from the various drainages in and around the North Carolina Sandhills were analyzed by instrumental neutron activation analysis (NAA) at the University of Missouri Research Reactor Center (MURR). Here we report the analytical methods and describe some of the chemical patterns identified in the ...

Abstract This paper presents the results of an interdisciplinary study Lydian pottery excavated at Daskyleion between 1988 and 2002. Before becoming satrapal centre Hellespontine Phrygia in Achaemenid period, to judge by historical archaeological evidence, had close interrelations with kingdom. Previous stylistic macroscopic fabric studies from have shown that as well items produced capital Sar...

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...

The laboratory for instrumental neutron activation analysis at the Reactor Institute Delft, Delft University of Technology uses a network of 3 gamma-ray spectrometers with well-type detectors and 2 gamma-ray spectrometers with coaxial detectors, all equipped with modern sample changers, as well as 2 spectrometers with coaxial detectors at the two fast rabbit systems. A wide variety of samples i...

The extraction of useful minerals or geological materials from the Earth’s crust, most typically various sources, is crucial to a country’s development and progress. Mineral-rich countries use these resources transform their economies propel them toward long-term prosperity. There an urgent need for world increase mineral exploration efforts, improve recycling important metal-containing resourc...