[Principles of the sanitary and housekeeping arrangements in space flight environments].

Significant changes in the functional state of crewmembers during prolonged space missions necessitate corrections to be made in the scope and methods of sanitation and housekeeping arrangements. Due to the fact that in space flight automicroflora representatives may acquire greater importance as possible pathogenic agents, procedures providing body cleanliness should include both physico-chemical exposures and direct skin microflora treatment. On the basis of pertinent investigations the authors have developed selection criteria and requirements for detergents and disinfectants that may be used in prolonged space flights.

[Study of the pulsation method for the hygienic treatment of underwear].

Hygienic processing of the underwear in a device combining mechanical treatment, forced pumping of the washing solution and wringing by compressed air can be used under special conditions. The basic parameters of the engineering process have been determined, viz.: the number of washing baths, temperature of the water, time of processing, etc.

[Selection of a urine preservative agent in relation to oxidative-catalytic methods of water regeneration].

Various chemicals were assayed as possible urine conservers to the used in space water reclamation systems. With respect to the antimicrobial activity and the quality of reclaimed water formalin at a concentration of 0.1% was selected as the best conserver.

[Sorption method of water regeneration for cosmonaut personal hygiene].

The paper describes sanitary-hygienic and technological investigations aimed at development of the sorption method of water reclamation for personal hygiene needs of cosmonauts from wash water. Catamine-AB was used as a detergent with bactericidal properties. Manned experiments helped to identify the conditions that provided an adequate cleaning of skin and simultaneous sterilization of wash water.