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Lapis lazuli has been used for more than 7000 years for the manufacture of precious objects and jewels. The main quarries for this stone are still active in Afghanistan, but there are other quarries that could have been exploited since antiquity in the Pamir mountains (Tajikistan), in Pakistan and in Siberia. For this reason a provenance study of lapis lazuli could provide answers to some impor...
Recently introduced FIB/SEM analysis in microscopy seems to provide a high-resolution characterization of the samples by 3D (FIB) cross-sectioning and (SEM) high resolution imaging. The aim of this study was to apply the FIB/SEM and SEM/EDS analysis to the interfaces of a metal-ceramic vs. two zirconia-ceramic systems. Plate samples of three different prosthetic systems were prepared in the den...
Crohn's disease (CD) is a chronic inflammatory bowel disorder caused by environmental and genetic factors. The purpose of this study was to analyse the possible influence of functional variants of genes of OCTN cation transporters on the carnitine ester profile of patients with CD. Genotyping for SLC22A4 1672C --> T, SLC22A5-207G --> C mutations and three common NOD2 variants (R702W, G908R and ...
The YBa2Cul07_6 (YBCO) superconductor ceramic has low critil..lil current density (Jc) because or weak linb between its grains. There have been a lot or effons to increase Jl. One or Ihe methods to increase Jc is to dope YBCO with other materials such as silver (Ag). In th is paper. the effect of adding silver to YBCO with the weight ratio of 0% 10%,15%. 20% and 30% on its mil:rostrul:lu...
Structural equation models are very common in medical, social, management and behavioral sciences where researchers established some causal relations between observed variables latent variable. In structured populations the assumption of independence observations is often violated had been ignored by researchers. As a result with correlated structure error terms, biased estimates parameters hav...
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