The application of scanning nuclear microprobe for study a radiation-induced migration of impurities at the grain boundaries in structural materials was considered. The work describes the sample preparation for a further irradiation of microscopic areas which include a few grains. Copper samples with deposited sulfur film were used in the present work. Determinations of a chemical composition o...

This study was carried out to describe the chemical characteristics of individual residual particles in hexagonal snow crystals, which can provide a clue to the aerosol removal mechanism during snowfall. In the present study, to collect snow crystal individually and to identify the elemental composition of individual residues retained in a hexagonal crystal, an orchestration of the replication ...

background: ageing of population worldwide will be responsible for a major increase of the incidence of osteoporosis in elderly. for the individual, osteoporotic fractures result in great disability as well as loss of quality of life and also represent an enormous burden for healthcare systems. this study was conducted to determine the prevalence of osteoporosis and it's association with s...

New archaeological evidences of the so-called "Bactrian-Margiana Archaeological Complex" (= BMAC) has invited a change in our knowledge of the cultural relations between Oxus civilization and south-eastern Iran during the III-II millennium B.C. transition period. The new archaeological projects in southern and western Turkmenistan, as well as attested at Gonur Depe, have showed a wider and more...

background: proton induced x-ray emission (pixe) has been applied as reliable and improved techniques in this study to compare concentration of various trace elements in normal and abnormal varicose veins. materials and methods: five samples from normal veins and 13 samples from varicose veins bombarded by 2.0 mev energy proton beams produced by a van de graff accelerator in vacuum. two specime...

ABSTRACT The possibility to conduct new fieldwork projects in previously largely unexplored Iraqi Kurdistan during the past decade has reinvigorated research into transformative fifth third millennium BCE (Chalcolithic Early Bronze Age) southwest Asia when human societies grew from small, autonomous villages centralized states with urban centers. Major efforts synchronize stratigraphic sequence...

Decay experiments have the potential to provide useful analogues in interpretation of archaeological remains. Previous studies focused on how physical properties or processing methods can influence fish bone distributions within sites. However, means by which intrinsic chemical bone, such as baseline collagen type I [‘collagen (I)’] chemistry, may affect both biomolecule and whole degradation h...

The archaeological knowledge of the early human occupations of the Pampean Region has improved through the finding of new archaeological sites dated between 10,000 and 11,200 RCYBP (Martínez et al. 2003; Politis 2003). Among them, Paso Otero 5 (Martínez 2001), chronologically located between ca. 10,000 and 10,400 years BP, is characterized by the presence of extinct megamammals and modern speci...

In response to widespread looting of archaeological sites, archaeologists have used satellite imagery to enable the investigation of looting of affected archaeological sites. Such analyses often require time-consuming direct human interpretation of images, with the potential for human-induced error. We introduce a novel automated image processing mechanism applied to the analysis of very high-r...