Impact of interstitial impurities on the trapping of dislocation loops in tungsten.

Ab initio simulations are employed to assess the interaction of typical interstitial impurities with self-interstitial atoms, dislocation loops and edge dislocation lines in tungsten. These impurities are present in commercial tungsten grades and are also created as a result of neutron transmutation or the plasma in-take process. The relevance of the study is determined by the application of tungsten as first wall material in fusion reactors.

Functional brain abnormalities localized in 55 chronic tinnitus patients: fusion of SPECT coincidence imaging and MRI.

Tinnitus is often defined as the perception of sounds or noise in the absence of any external auditory stimuli. The pathophysiology of subjective idiopathic tinnitus remains unclear. The aim of this study was to investigate the functional brain activities and possible involved cerebral areas in subjective idiopathic tinnitus patients by means of single photon emission computerized tomography (SPECT) coincidence imaging, which was fused with magnetic resonance imaging (MRI).

Ascorbic acid in blood serum of patients with pulmonary tuberculosis and pneumonia.

Ascorbic acid plays a major role in pulmonary antioxidant defense. Sufficient amounts of ascorbic acid are necessary to maintain normal metabolic processes in the lung. We measured the levels of ascorbic, dehydroascorbic and diketogulonic acids in blood serum of patients with pulmonary tuberculosis (PTB) and pneumonia.

Surface heterogeneity and surface area from linear inverse gas chromatography. Application to glass fibers.

A new method of measuring surface heterogeneity of non-porous adsorbents by inverse gas chromatography (IGC) is developed. In contrast with the methods described in the literature which are based on nonlinear chromatography (thermodynamics of adsorption) this method is based on linear chromatography (kinetics of adsorption). The mass balance equation of linear chromatography with axial diffusion term and the Langmuir kinetic equation on an open (non-porous) heterogeneous surface are solved by the method of Laplace transforms.

[Indices of mycobacterium tuberculosis growth in culture media and levels of active-phase proteins in different forms of pulmonary tuberculosis].

The relationship was examined between the bacteriological (growth time, the count of M. tuberculosis colonies) and biochemical (serum haptoglobin and ceruloplasmin levels) indices that characterize the magnitude of inflammation in 653 patients with different forms of pulmonary tuberculosis. Diagnostically, there was a dissimilarity in the biochemical indices studied and there was a stronger relationship between the bacteriological indices and haptoglobin levels.