Superfluid density in the underdoped YBa2Cu3O7-x: evidence for d-density-wave order of the pseudogap.

The investigation of the penetration depth lambda(ab)(T,p) in YBa2Cu3O7-x crystals allowed one to observe the following features of the superfluid density n(s)(T,p) proportional, variant lambda(-2)(ab)(T,p) as a function of temperature T0) depends on p slightly in the optimally and moderately doped regions (0.

Simulation of space cabin atmosphere.

The Soyuz 22 space cabin atmosphere was studied for volatile organic trace contaminants. By gas chromatography the following constituents were identified: methane, ethane, heptane, methanol, ethanol, n-propanol, acetaldehyde, acetone, ethyl benzene. Except for acetone, concentrations of the above compounds were close to the values determined in the mock-up experiments.

Preliminary results of medical investigations during manned flights of the Salyut 4 orbital station.

In 1975 the Soviet Union performed two manned flights on board the orbital station Salyut 4. The first mission of 30 days was flown by A. A.

Effects of an 18-day flight on the human body.

During their flight on board the Soyuz 9 A.G. Nikolayev and V.

Studies of human adaptation to space flight effects under low-calorie diet conditions.

Experiments were performed to establish the activity and performance of man kept on a low-calorie (1800) diet and exposed to some space flight effects. The diet consisted of canned foods with an optimal proportion of basic nutrients and amino acids. Three series of experiments were carried out on 18 healthy male subjects.

Life in the spacecraft and planetary station.

Further exploration of outer space and the solar system, performance of interplanetary flights and establishment of planetary stations necessitate extensive physiological studies and development of reliable life-support systems. When developing the systems, particular attention should be paid to the concept and testing of new processes which can provide a highly efficient regeneration of vitally important materials and decrease the weight of expendables. Of great significance is the establishment of optimal parameters of the environment for long-term manned spaceflights and selection of facilities securing them.