Could IFN-γ predict the development of residual pleural thickening in tuberculous pleurisy?

Background. The aim of our study was to identify predictive factors for the development of residual pleural thickening (RPT) in patients with tuberculous pleurisy (TP). Methods. A retrospective study of patients with pleural tuberculosis. The clinical and radiological characteristics, and measurements of microbiological and biochemical parameters or markers such as adenosine deaminase (ADA), interferon-γ (IFN-γ) and vascular endothelial growth factor (VEGF) in pleural fluid were studied. Results. Thirty one patients (24 male and 7 female) with a mean age of 55.9 years were studied. There were 25 (80.6%) patients with RPT > 2 mm and 6 (19.4%) patients without RPT. Ten patients (32.2%) had RPT ≥ 10 mm. The rate of pleural thickening was less in small effusions (p<0.05). IFN-γ was higher in patients with RPT ≥ 10 mm (p < 0.05) in comparison with those with RPT < 10 mm. Conclusions. Pleural fluid IFN-γ may deserve further investigation in order to build up preventive and therapeutic strategies against RPT and its clinical complications

Modelling of street radio links as microwave multiports at work of system WiMAX in the conditions of the city

The approached method of calculation of attenuation of radio-waves along street wave channels with the help canyon radio waves propagation (RWP) models and the Microwave Office packet of applied programs has been developed. The comparative analysis of the results of calculation and experiment for a case of WiMAX system operating in the central area of Kharkiv has been supplied

Prediction model of energy security for the systems of subscriber radio access with branched street and corridor communications channels

This paper is devoted to the issues of investigating the energy security (noise immunity plus stealthiness) of subscriber radio access systems built on the basis of branched corridor and street wave channels formed by architectural structures. A multiport model has been created within the framework of the known concept of wire-tap channel (information leakage channel). This model makes it possible to determine the intensity of waves at any section of the structure under consideration (including the wire-tap channel) and, consequently, the security characteristics, by using the methods of microwave circuits.The proposed model was applied for investigating the energy security of subscriber radio access systems with branched Wi–Fi corridor radio channels by using numerical experiments