[The features of the relationship of the indices of physical and sexual development of teenagers of the city of Chelyabinsk--the industrial center of South Ural].

There was made a determination of the correlation relationships (CR) between indices of physical and sexual development (SD) of 1997 adolescents aged from 11 years 6 months to 17 years 5 months 29 days residing in the industrial center of the Southern Urals characterized by high levels of air pollution (API 7-13). Benzo(a)pyrene and formaldehyde contribute the greatest part to air pollution. The level of SD, time of appearance of secondary sexual characteristics was revealed to be interrelated with the pace of physical development of adolescents, regardless of the gender Children with an accelerated pace of physical development (macrosomatotype) are characterized by advancing sexual development and the earlier appearance of secondary sexual characteristics.

[Adolescents' physical development in a poor environmental area].

Physical and sexual developments were determined in 285 schoolchildren aged 12 to 17 years from the town of Karabash, an area of ecological ill-being in the environmental levels of heavy metal salts. The atmospheric air pollution was in parallel monitored at route observational stations. It was found that 39% of the schoolchildren had disharmonic physical development; of them a fourth had lower body weight and decreased chest circumference with normal growth indices.

[Microwave therapy in combined rehabilitation of children suffering from chronic neurosensory hypoacusis].

Efficacy of audiovisual therapy in combination with MR therapy on the hearing function was studied in 83 hypoacusis and deaf children at the age 3 to 12 years. A positive effect was registered in 68 of 83 children (81.9%).

[Influence of microwave magnetoresonance therapy on various parameters of local immune defence in the respiratory tract in ailing children].

Microwave magnetoresonance therapy (MMT) was performed in 50 preschool children who had frequent respiratory infections. The assessment of local antiinfectious defense factors registered a significant decrease in the total number of circulating immune complexes (CIC) with disappearance of small CIC; enhancement of total complementory activity and C2, C4-fragments of the complement indicating activation of mucosa of the mucosa-associated lymphoid tissue inductive zone providing specific antibacterial defense of the upper respiratory tract.

[The impact of the hostel life style on the health status of students].

The work aims at studying the specificity of the social living conditions, organization, regimen, psychosocial and other factors of life and their effect on the health status of students from the hostels of the students' town in Sofia. An inquiry is used, including 69 questions, connected with the organization and the conditions of living and education in the hostels. A statistical method for examining the chronic somatic morbidity is applied.

[The role of hemocoagulation disorders in the pathogenesis and outcome of severe forms of acute pneumonia in infants and children].

As many as 249 children (age range 1 month--3 years) with acute pneumonia admitted to the department for intensive care were examined for the hemocoagulation system. Three types of changes were revealed: hypercoagulation associated with low fibrinolytic activity, coagulopathy of consumption, and hypocoagulation coupled with active fibrinolysis. Clinicomorphological correlations were done in 50 cases which eventuated in an unfavourable outcome.

[Hyperbaric oxygenation as a part of the treatment of chronic ulcerohemorrhagic colitis].

34 patients with chronic ulcerohemorrhagic colitis in exacerbation were treated with hyperbaric oxygenation in addition to the routine therapy. Two chambers model "Dräger" 1000 and 1200 were used. The total course of treatment included 10-12 seances with 60-75 min.

The influence of neonatal thymectomy on the blood serum level of total lipids, NEFA, triglycerides, total cholesterol and beta-lipoproteins in rats.

The time course of changes in the blood serum content of total lipids (TL), nonesterified fatty acids (NEFA), triglycerides (TG), total cholesterol (TC) and beta-lipoproteins (beta-LP), caused by neonatal thymectomy (NTE), was investigated in neonatally thymectomized and in sham-operated rats aged 15, 30, 45 days, 2, 3 and 5 months. TL were significantly increased on days 15, 30, 45 and 60 after operation; their level in 3- and 5-month-old rats was already normal. In control rats, NEFA level increased with age; their level in NTE rats was significantly higher on days 15, 30, 45 and 60 after thymectomy.

[The occupationally important qualities of adolescents studying for the job of power engineer-operator].

Investigation is made and data given for the rising generation from III and IV class trained for the specialty "operator-power technician". Studies are carried out on a number of properties of the Central Nervous Activity and the analyzers, some functions of attention, as well as specific personal characteristics of 44 professionally suitable and 21 professionally unsuitable schoolchildren. The results of the comparative analysis of the experimental material, and the received correlation relation of the incidences with the external criteria "success in the mastering of the profession" give grounds to accept that the high versatility of the basic nervous processes, the capacity for concentration, resistance and swiftness in switching the attention, the low personal uneasiness and expressed emotional stability are of professional importance and determine the possibility for success in mastering the profession "operator-power technician".

[The effect of neonatal thymectomy on thrombocytopoesis in rats].

The influence of neonatal thymectomy on the number of thrombocytes, bone-marrow megakaryocytes (MKC) and activity of plasa thrombocytopoietin(TP) was studied in male rats 60 days after the manipulation--under normal and extreme (acute thromobocytopenia) conditions. It was established that under normal conditions neonatal thymectomy (NT) diminished the number of thromobocytes, the percentage of incorporated 75 selenomethionine in newly formed thromobocytes, the total number of MKC and their single stages--I, II, III, IV. The activity of plasma TP was not changed in normally thymectomized rats under normal condition, while in comparison with sham thymectomized rats, while it was considerably higher in acute thrombocytopenia.

[Problems of the extracurricular regimen of pupils (1st to 3d grades)].

The purpose of the present work is to make a hygiene evaluation of some basic moments of the-of-school regimen of schoolchildren from the first grades. The longitudinal regimen of schoolchildren from I-III class of on school in Sofia is studied and 68 classes of 10 district of the country. In out-of-school regimen is investigated by specially prepared questionnaire, completed with the assistance of the parents.

[Influenza in man and animals].

A review of references found in World literature concerning the present day problem of grippe virus participation in man's and animals' pathology is made. New aspects of the relations between grippe viruses in man and in the animals, strain circulation, changes in their antigenic structures and the arisal of spontaneous mutations as well as the possibility for preserving human grippe strains in animals during interepidemical periods are revealed. Various hypotheses confirming this possibility are discussed.

Gonadal hormones and pathogenesis of occlusive arterial thrombosis.

Arterial thrombus formation was induced in male and female Wistar rats (3 mo) by inserting a loop-shaped polyethylene cannula into the abdominal aorta. Thrombogenesis was also induced in mature male and female New Zealand rabbits by constriction of the femoral artery and injection of ellagic acid. The criteria for thrombus development in the cannulated rats were: incidence of thrombosis (IT), obstruction time (OT), and thrombus weight (TW).