This study aimed to determine the nickel (Ni), and chromium (Cr) ions amounts investigate their potential effects on thyroid hormones in patients' saliva who were receiving treatment with fixed orthodontic appliances (FOA). In this study, 42 FOA volunteers participated, all samples obtained from a specialized center for manufacturing orthodontics Bab Al-Moadham, Baghdad, Iraq. According finding...

This study investigated the effect, on reactor performance and biomass retention inside the bed, of the material used to make the supports of anaerobic fixed-bed reactors. Three inert supports of similar shape but made of three different materials polyvinyl chloride, polypropylene, high-density polyethylene were manufactured and used. All three supports had the same specific surface area but di...

In initial spectroscopic measurements on the Maryland Centrifugal Experiment (MCX), rotation velocities and directions for C, C, C and N ions and neutral hydrogen atoms have been obtained from the Doppler shifts of visible spectral lines. Ion and neutral temperatures have also been determined from Doppler broadening. Different rotation velocities and temperatures are observed for the different ...

Two classes of Conformal Field Theories have been proposed to describe the Hierarchical Quantum Hall Effect: the multi-component bosonic theory, characterized by the symmetry Û(1)× ̂ SU(m)1 and the W1+∞ minimal models with central charge c = m. In spite of having the same spectrum of edge excitations, they manifest differences in the degeneracy of the states and in the quantum statistics, which ...

We consider the Maldacena-Nuñez supergravity solution corresponding toN = 1 super Yang-Mills within the approach by Di Vecchia, Lerda and Merlatti. We show that if one uses the radial distance as a field theory scale, the corresponding beta function has an infrared fixed point. Assuming this to be a physical property for all four dimensional non-singular renormalization schemes, we use the rela...