[Respiratory function study of workers engaged in vinyl chloride and polyvinyl chloride manufacture]. / Funktsionalno izsledvane na dishaneto pri rabotnitsi, zaeti vuv vinilkhloridno i polivinilkhloridno proizvodstvo.

A hygienic evaluation is made on the work conditions in the production of vinyl chloride and polyvinyl chloride. Studies were carried out on 516 workers after the following indices: vital capacity /VC/, forced expiratory volume per sec. /FEV1/, peak expiratory capacity /PEC/, maximum expiratory capacity 75 /MEC75/, maximum expiratory capacity 50 /MEC50/ and maximum expiratory capacity 25 /MEC25/. It was established that 33.13% of the workers were with ventilation disturbances. The most frequently met was the obstructive syndrome of ventilation insufficiency. The infringements were most often in workers with length of service up to 1 year.

[Determination of ejaculate properties by the method of Hynie]. / Opredeliane kachestvata na eiakulata po metoda na Khinie

PIP: The Hynie method of determining various properties of human sperm, such as the number per 1 ml, the mobility of the spermatozoids, the index of their longevity, the index of progressive movement, and the average speed of the sperm upon ejaculation, is examined and analyzed. The properties of 100 ejaculates from men of sterile families were examined in an effort to determine any significant anomalies. The Hynie method was observed to have some advantages over other methods: it is easy to apply and provides exact data which are useful in determining spermatozoidal deficiencies in sterility cases.^ieng