Search Results - "Alexeev, A. D."

Methane desorption from a coal-bed by Alexeev, A.D., Feldman, E.P., Vasilenko, T.A.

“…We study the desorption of methane from a coal-bed. A model taking into account both methane diffusion in coal – blocks and its filtration through the system…”
Get full text

Latent methane in fossil coals by Alexeev, A.D, Ulyanova, E.V, Starikov, G.P, Kovriga, N.N

“…It is established experimentally using 1H NMR wide line spectroscopy that methane can exist in coals not only in open or closed porosity and fracture systems…”
Get full text

True triaxial loading apparatus and its application to coal outburst prediction by Alexeev, A.D, Revva, V.N, Alyshev, N.A, Zhitlyonok, D.M

“…Two generations of true triaxial loading (TTAL) apparatuses are presented. First generation apparatuses were intended primarily for true stress state imitation…”
Get full text

The effect of stress state factor on fracture of sandstones under true triaxial loading by Alexeev, A. D., Revva, V. N., Bachurin, L. L., Prokhorov, I. Y.

“…Experimental results on rock deformation and fracture under true triaxial compression have revealed a misfit between strain state and stress state, strain…”
Get full text

Phase states of methane in fossil coals by Alexeev, A.D., Vasylenko, T.A., Ul'yanova, E.V.

“…NMR measurements have revealed that methane can exist in coal samples in the state of solid solution rather than only adsorbed gas, opening new ways to…”
Get full text

Closed porosity in fossil coals by Alexeev, A.D., Vasilenko, T.A., Ulyanova, E.V.

“…The presence of closed porosity in fossil coals is shown. The technique of definition of closed porosity is developed. Volumes of closed pores for coals of the…”
Get full text

Kinetics of Methane Desorption from Coal Nano- and Mesostructures by Alexeev, A. D, Feldman, E. P, Vasilenko, T. A

“…Kinetics of gas desorption from a material with a developed nano- and mesostructure is studied by the example of methane in coal. It is supposed that the…”
Get full text

Kinetics of hydrogen desorption from a metal to a closed reservoir by Feldman, E.P., Alexeev, A.D., Melnik, T.N., Gumen, L.N.

“…The dynamics of hydrogen release from metals to the closed volume at a fixed temperature is studied. The surface lag-time of hydrogen depending on both the…”
Get full text

Alteration of methane pressure in the closed pores of fossil coals by Alexeev, A.D., Feldman, E.P., Vasilenko, T.A.

“…The kinetics of gas molecule diffusion is considered in a solid with pores. The results obtained describe the effects of porosity and gas solubility on the gas…”
Get full text

Phase transitions in the coal-water-methane system by A.D.Alexeev, E.V.Ulyanova, N.A.Kalugina, S.E.Degtyar

“…Low temperature phase transitions in water and methane occurring in fossil coals were studied experimentally using Nuclear Magnetic Resonance (NMR) techniques…”
Get full text

Kinetics of Methane Desorption from Coal Nano- and Mesostructures by ALEXEEV, A. D, FELDMAN, E. P, VASILENKO, T. A

Get full text

Diffusion-filtration model of methane escape from a coal seam by Alexeev, A. D., Vasilenko, T. A., Gumennik, K. V., Kalugina, N. A., Feldman, E. P.

Get full text

Measurement of the gravitational constant $G$ in space (Project SEE): sensitivity to orbital parameters and space charge effect by Alexeev, A. D, Bronnikov, K. A, Kolosnitsyn, N. I, Konstantinov, M. Yu, Melnikov, V. N, Sanders, A. J

“…We describe some new estimates concerning the recently proposed SEE (Satellite Energy Exchange) experiment for measuring the gravitational interaction…”
Get full text

See Project for Testing Gravity in Space: Current Status and New Estimates by Alexeev, A. D, Bronnikov, K. A, Kolosnitsyn, N. I, Konstantinov, M. Yu, Melnikov, V. N, Sanders, A. J

“…Grav.Cosmol. 5 (1999) 67-78 We describe some new estimates concerning the recently proposed SEE (Satellite Energy Exchange) experiment for measuring the…”
Get full text

On Possible Measurement of Gravitational Interaction Parameters on Board a Satellite by Alexeev, A. D, Bronnikov, K. A, Kolosnitsyn, N. I, Konstantinov, M. Yu, Melnikov, V. N, Radynov, A. G

“…The recently suggested SEE (Satellite Energy Exchange) method of measuring the gravitational constant $G$, possible equivalence principle violation (measured…”
Get full text