Immunological Monitoring of Osteogenesis Disorder

The study of immune responses of peripheral blood in bone regeneration for bone formation predicting complications is relevant. Studies were carried out on patients with the facial skeleton injury before and after stable osteosynthesis of the mandible in a fixing device for external fixation. Of the 136 patients, 17 people’s bone tissue regeneration has been slow. Laboratory tests were carried out before and after the operation. The studies included the study of cellular immunity, humoral immunity, phagocytosis, acute phase proteins and cytokine status. The obtained data were processed using variation statistics methods and the modified theorem of T. Bayes. The study revealed that alternating stages of regeneration of bone tissue (inflammation, proliferation of osteoblasts, collagenogenesis and ossification) are accompanied by changes in the immunological status. A comparative study of the dynamics of immunological parameters at normal and slow osteogenesis had made it possible to establish criteria for delayed consolidation of bone tissue. Prognostic criteria before the operations include increasing the concentration of IgM and decreasing the concentration of C-reactive protein, in the early postoperative period-increasing the number of leukocytes, the concentration of tumor necrosis factor, IgM, as well as reducing the number of CD45+CD3+-cells, the complement activity and the amount of lactoferrin

Quasi-optical 2D system for non-contact non-destructive testing of defects in natural and artificial crystals

The results of development the automated system of two-dimensional diagnostics of defects of crystalline materials are presented. Used technology imaging. The structural scheme of the system is given, its main blocks are indicated, the approbation process is described, the software of the system is described

BWO based imaging for control of MWCNTs polymer composites homogeneity

Terahertz imaging system based on backward wave oscillator for the defectoscopy of composites in the industry is presented. At a frequency of 874 GHz images of multiwall carbon nanotube agglomerates in a composite are obtained. The possibility of detecting inhomogeneities using level filtering is shown

Influence of Kinematic Parameters of Carbon Dioxide Turbine on Its Coefficient of Efficiency and Dimensions

To reduce carbon dioxide emissions into the environment, the energy sector develops oxygen-fuel energy cycles. One of the most promising cycles is the Allam cycle that features the highest efficiency of electricity generation among all others. One of the main elements of an oxy-fuel energy cycle is a high-temperature carbon dioxide turbine. The turbine’s working fluid and coolant consist predominantly of carbon dioxide at a supercritical pressure. Currently, there are no recommendations in the literature for the design of carbon dioxide turbines for an oxy-fuel energy system (OFES) operating according to the Allam cycle; therefore, there is a need to study the influence of parameters of the flow path of carbon dioxide turbines on its efficiency and overall performance. In this paper, we have presented the results of one-dimensional calculations of a flow path of the carbon dioxide turbine for the Allam cycle with a capacity of 300 MW, with an initial temperature and pressure of 1100 °C and 30 MPa, and an outlet pressure of 3 MPa. The study was carried out by varying the rotor speed, the reactivity level and the average diameter. Based on the results of one-dimensional calculations, we have found that the highest efficiency of the turbine flow path is achieved at a speed of 471 rad/s, a reactivity of 0.5, and an average diameter of 1.1 m for the first stage

Quasi-optical 2D system for non-contact non-destructive testing of defects in natural and artificial crystals

The results of development the automated system of two-dimensional diagnostics of defects of crystalline materials are presented. Used technology imaging. The structural scheme of the system is given, its main blocks are indicated, the approbation process is described, the software of the system is described

Continuous wave THz imaging of multi-walled carbon nanotubes polymer composites

In this paper, the problem of creating homogeneous composites with on carbon nanotubes is described. To control the quality of the manufactured composites, a system of terahertz visualization of material inhomogeneity using a continuous radiation source is used. An increase in the homogeneity of the composite based on multi-walled carbon nanotubes with an increase in the time of ultrasonic processing during polymerization is noted. The advantages of THz imaging in comparison with optical microscopy are shown