Electrophysical Properties and Structure of Natural Disordered Carbon.

The progress in the practical use of glassy carbon materials has led to a considerable interest in understanding the nature of their physical properties. The electrophysical properties are among the most demanded properties. However, obtaining such materials is associated with expensive and dirty processes.

Evaluation of microstructure and conductivity of two-phase materials by the scanning spreading resistance microscopy (the case of shungite).

The determination of the content of the conducting phase and the assessment of conductivity by microscopic images are interesting for rapid and non-destructive analysis of the electrophysical properties of two-phase (conductor/dielectric) samples during the atomic force microscopy. In this paper we summarized results of the analysis of the conductivity maps of the shungite surface by the method of discretization by applying a square grid with subsequent binary digital processing. Microstructure and conductivity were evaluated by measuring the average length of continuous conductive circuits isolated on the grid.

[Spondylodesis of the cervical spine using a metal-polymer construction].

The method of spondylodesis of the cervical spine by a metal-polymer design was used in operations on 54 patients with cerebrospinal trauma. The control group was formed of 15 patients in whom spondylodesis was performed by an autograft. Double fixation of the vertebral bodies by a metal design and protacryl ensures reliable stabilization and supporting function of the damaged spinal segment, requires no skeletal traction or additional external immobilization in the postoperative period, allows conduction of early rehabilitation therapy with activation of the patient himself, and is conducive to reduction of the terms of the restorative period of treatment.

[Endoprosthesis in ununited fractures and pseudarthroses of the femur neck in middle-aged and elderly patients].

An experience with the treatment of 92 patients with non-united fractures and false joints of the femoral neck is described. Among them there were 52 elderly and senile patients who were subjected to various kinds of endoprosthezing of the hip joint. The authors have established certain advantages of individual one-pole endoprostheses after A.