The Semenovskys case is typical. They are both victims of a repressive Soviet bureaucracy. the very bureaucracy that Mr. Gorbachev says he is committed to reforming. That bureaucracy has denied Mr. Semenovsky and his wife. Tanya. a visa. A visa they first applied for in October of 1986. Mr. Semenovsky Is 41 years old and is by profession a scientist. having received a masters degree from the Physics and Technical Institute in Tanya Semenovsky is 30 years old and is a railroad technician by training. For many years. Yuri Semenovsky worked on atmospheric hydrodynamics. meteorology and computer mathematics. At the same time.