Cyclic confining pressure and rock permeability: Mechanical compaction or fines migration.

The apparent rocks permeability, measured under cyclic loading, tends to constantly decrease with each subsequent loading/unloading cycle, the main reason for this, the researchers consider irreversible deformations. However, this understanding is not complete, as attention is not paid to the method of determining the permeability. Under cyclic loading, permeability is measured by fluid flow, which is able to carry colloids and they can clog pore throats and reduce permeability, but this is not taken into account in the study of porous rocks.

The Rehbinder Effect in Testing Saturated Carbonate Geomaterials.

Carbonate geomaterial samples were tested for uniaxial compressive strength and tensile strength under air-dried and distilled-water-wet conditions. When tested for uniaxial compression, samples saturated with distilled water showed 20% lower average strength than that of air-dried samples. In the indirect tensile (Brazilian) test, samples saturated with distilled water showed 25% lower average strength than that of dry samples.

[FEATURES OF THE RELATIONSHIP BETWEEN IMMUNOLOGICAL PARAMETERS, LEVEL OF VIRAL LOAD AND SEVERITY OF MORPHOLOGICAL CHANGES IN THE LIVER ACCORDING TO NON-INVASIVE TESTS IN HBEAG--NEGATIVE PATIENTS WITH CHRONIC HEPATITIS B].

Aim - to investigate the relationship between immunological parameters, level of viral load and severity of morphological changes in the liver according to non-invasive tests in HBeAg-negative patients with chronic hepatitis B. The study included 55 HBeAg-negative patients with chronic hepatitis B. Age of patients was from 20 to 78 years.

CLINICAL-PATHOGENETICAL ROLE OF TOLL-LIKE RECEPTOR 2 (RS 5743708) AND INTERLEUKIN-10 (RS 1800896) GENES POLYMORPHISM IN THE COURSE OF HERPES ZOSTER IN ADULTS.

The study included 50 adult patients with shingles by which analyzed the clinical course of the disease depending on the gene polymorphism of interleukin-10 (rs 1800896) and toll-like receptor 2 (rs 5743708). According to the results of our study, it was established that genotype AA of gene Toll-like receptor 2 was associated with a high risk of Varicella-Zoster virus reactivation and manifestation of herpes zoster, moderate course. Analysis of the IL-10 gene polymorphism showed that genotype TT was associated with a risk of the development severe complicated course of shingles.

ANALYSIS OF THE LONG-TERM CLINICAL RESULTS OF USING 940 μm DIODE LASER IN PATIENTS WITH GENERALIZED MODERATE CHRONIC PERIODONTITIS.

The experience of using a diode laser with a wavelength of 940 μm in the treatment of patients with generalized periodontitis of moderate severity of chronic course is presented. 30 patients were examined, including 17 men (56.6%), and 13 women (43.