Passive acoustic monitoring for seabed bubble flows: Case of shallow methane seeps at Laspi Bay (Black Sea).

This research quantifies the gas release rate from a natural shallow methane seep site in the Laspi Bay (Black Sea), whose origin is thermocatalytic. An adaptive single bubble identification technique was applied to analyze gas volume and release rates from passive acoustic data. Gas from the seafloor was emitted by single bubbles that occurred in clusters.

Shift in hemocyte immune parameters of marine bivalve Mytilus galloprovincialis (Lamarck, 1819) after exposure to methane.

Methane are widely used in industry as an emerge source may be released significantly higher aquatic ecosystems due to gas seepages. In this study, short-term (90 min) methane effects on bivalve hemocytes were investigated using flow cytometry. Hemocyte parameters including hemolymph cellular composition, phagocytosis activity, mitochondrial membrane potential and reactive oxygen species (ROS) content were evaluated in the mussel Mytilus galloprovincialis (Lamarck, 1819) exposed to hypoxia (control group), pure methane and industrial methane (industrial hydrocarbon mixture).

[Essential questions of training of dentists for accreditation].

The paper presents sociological study aimed to analyze the conditions and methodological rationale for the basic directions of optimization of accreditation procedure for dentists. The study included 129 graduates of dental faculties of educational institutions of Sechenov First Moscow State Medical University. The material was collected by questionnaire survey and interviewing.

[Microbial Processes and Genesis of Methane Gas Jets in the Coastal Areas of the Crimea Peninsula].

Hydroasoustic techniques were used for detection and mapping of gas jet areas in the coastal regions of the Crimean peninsula. Gas seep areas in the bays Laspi, Khersones, and Kazach'ya were chosen for detailed microbiological investigation. The first type of gas jets, observed in the Laspi Bay, was probably associated with discarge of deep thermogenic methane along the faults.

[Sulfate reduction and microbial processes of the methane cycle in the sediments of the Sevastopol bay].

The rates of microbial processes of sulfate reduction and of the methane cycle were measured in the bottom sediments of the Sevastopol basin, where seeps of gaseous methane have been previously found. Typically for marine environments, sulfate reduction played the major role in the terminal phase of decomposition of organic matter (OM) in reduced sediments of this area. The rate of this process depended on the amount of available OM.

[The role of thin-needle aspiration biopsy in the diagnosis of thyroid nodules].

The paper analyzes the results of thin-needle aspiration biopsy (TNAB) performed in 1155 patients with thyroid nodules. The purpose of the paper was to evaluate the efficiency of TNAB in the differential diagnosis of thyroid nodules and in the detection of carcinoma among them. A prospective open uncontrolled study was conducted.

[Follicular and Hurthle cell tumors of the thyroid gland. Possibilities of preoperative differential diagnosis].

Changes suspicious for malignancy were detected in 127 patients who, according to scintigraphic examination of the thyroid, had "cold" nodules. As a consequence, all the patients were operated on and fine-needle aspiration findings were compared with the histological results. Thyroid cancer was identified in 18.

[Efficacy of thyroxine and potassium iodide treatment of benign nodular thyroid lesions].

Aim: To study efficacy of thyroxine (TX) and potassium iodide (PI) in the treatment of benign nodular thyroid lesions (BNTL).

Material And Methods: 118 patients with BNTL (colloid or colloid hypercellular as shown by thin needle aspiration biopsy, 'cold" or "warm" by scyntigraphy findings) were randomized into two groups: 59 patients were given thyroxin and the other 59 patients PI. The day dose of TX (75-150 mcg) was prescribed according to serum concentration of TTH trying to diminish it to 0.

[The role of ultrasonics in the detection of metastatic tumors of abdominal organs].

Ultrasonic investigation of 357 abdominal and retroperitoneal cancer patients provided echographic signs of distant metastases and local malignant involvement. In view of high informative value of the method, ultrasonography is recommended as a substantial component of the early diagnosis.

[Immunoradiometric analysis and the prevention of posttransfusion hepatitis B].

Planned blood donors of the town of Zaporozhye were examined for the presence of HBsAg using national radioimmune kits "IRMA-HBsAg". On the basis of the results of this analysis, a bank of blood and its preparations containing no HBsAg was created and used for blood transfusions in children under 14. The incidence of posttransfusion hepatitis B among the children in 1985 was reduced 2.

[Effect of local use of carbostimulin on the activity of energy metabolism enzymes in mandibular alveolar process tissue in the rat].

The local carbostimulin effect on the oral cavity tissue under spontaneous parodontosis of albino rats stimulates the energy and biosynthetic process. A significant decrease in atrophy of the alveolar process confirms a positive effect of carbostimulin on the jaw bone tissue.

[Quantitative indices of the activity and the electrophoretic characteristics of staphylococcal catalase].

The average levels of activity of intracellular and extracellular catalase were determined. The activity of intracellular catalase was shown to be significantly higher than that of extracellular catalase, the average level of activity of extracellular catalase being higher in S. aureus than in S.