Application of HRGS for forensic characterization of uranium oxides, pure uranium metals and uranium alloys.

A nondestructive iterative method for uranium-bearing material characterization with HRGS developed earlier in Burdeinyi et al. (2020) is applied to determine matrix densities, uranium mass fraction and uranium isotope masses of uranium ore, UO and UO powders, fuel elements in the form of UO microspheres, uranium metal and uranium alloys. It is shown that UO powders with uranium mass fraction of about 84% can be distinguished from the powders of UO with uranium mass fraction of about 87%; uranium products in the form of liquid or loose powder with matrix density of 0.

A new nondestructive iterative method for forensics characterization of uranium-bearing materials by HRGS.

In addition to the isotopic composition of a radioactive material, the high-resolution gamma spectrometry (HRGS) allows one to quantify physical characteristics of the material, which are important for nuclear forensics. A quantitative assessment of these characteristics requires two input parameters: the sample density and the mass fraction of radioactive material in the matrix. A method is proposed to determine these parameters provided that the enrichment and the total mass of the material are known.

[Knee joint instability: the current view of the problem].

Modern instrumental methods of diagnosis of the knee joint (KJ) fracture and of the damaged structures identification are presented. The proposed modern methods of operative treatment of the KJ posttraumatic instability, which are applied in the clinic, are recommended for broad usage.

[Systemic enzyme therapy in orthopedics and traumatology].

In 57 patients the preparations of systemic enzyme therapy vobenzim and flogenzim were applied during conservative or operative treatment of locomotor system injuries. Anti-edema, antiinflammatory and analgetic action of preparations was established.