ABSTRACT
An experiment was carried out to validate and select feed to be supplied to Pachydactylus turneri in a 30-day orbital flight of robotic spacecraft BION-M1. Larvae of two Tenebrionidae species, i.e., Tenebrio molitor and Zophobas were tested for survivability, tolerance of hunger and cold, ability to stick to and move along different surfaces. Tenebrio molitor was shown to be best suited. A special feeder that will sustain the beetle over 30 days was designed. The experiment provided new data about Tenebrionidae biology and suggested the feeding technology for a 2-month space experiment with Pachydactylus turneri.
Subject(s)
Coleoptera/physiology , Feeding Methods/instrumentation , Larva/physiology , Adaptation, Physiological , Animals , Cold Temperature , Food Deprivation , Lizards , Robotics , Spacecraft , Stress, Physiological , Time FactorsABSTRACT
For the evaluation of the viability of a nonfunctioning stored heart, a system of myocardial gases (pO2, pCO2) monitoring was developed and approved . It is shown that myocardial pCO2 monitoring is most informative in evaluation of viability of a stored heart. The character of this curve makes it possible to identify the duration of storage admissible in each concrete case as well as the loss of viability by the heart.
Subject(s)
Carbon Dioxide/metabolism , Cryopreservation/methods , Heart Transplantation/physiology , Heart , Myocardium/metabolism , Organ Preservation/methods , Oxygen Consumption/physiology , Animals , Cardioplegic Solutions/pharmacology , Dogs , Hydrogen-Ion Concentration , Monitoring, Physiologic , Oxygen Consumption/drug effects , Tissue Survival/drug effects , Tissue Survival/physiologySubject(s)
Extracorporeal Circulation , Monitoring, Physiologic , Oxygen Consumption , Oxygen/blood , Animals , Dogs , Female , Male , Myocardium/metabolism , Partial PressureABSTRACT
An arc-type discharge in a protective medium was used in manufacturing miniaturized cathodes with mirror working surface for memranous PO2 sesnsors. The obtaine thereby spherical fused end of the platinum wire has a diameter measuring from 35 to 120 micronm, being dependent both on the length of the wire and on the magnitude of the applied discharge voltage. Platinum should be fused into the glass capillary tube in the oxidizing zone of the flame.
