Modulus of elasticity of solid materials is determined by an experimental static tensile test on usual terms. The test is insufficient for hoses. Therefore, there is provided a special test for the determination of modulus of elasticity of hoses in reference to pressure and temperature of working liquid and environment temperature. The aim of the paper is to experimentally determinate modulus of elasticity of hoses depending on pressure of working liquid. and Za běžných podmínek se modul pružnosti pevných materiálů stanovuje experimentální statickou tahovou zkouškou. U hadic je tato zkouška nedostačující, proto se provádí speciální zkouška pro stanovení modulu pružnosti hadic s ohledem na tlak a teplotu pracovní kapaliny a teplotu okolního prostředí. Předmětem tohoto příspěvku je experimentální stanovení modulu pružnosti hadic v závislosti na tlaku pracovní kapaliny.
Rrecise analysis of the orbit of minor planet (1221) Amor, based on all observations made In 1932-1980, shows that in 1956 there was an unexplained event in the motion of the asteroid. Possible interpretations of that fact as well as peculiarities in the long-term motion of Amor in 1650-2170 are discussed. The ephemeris of Amor for 1988 is presented.