Acoustic Emissions During Creep of Frozen Soils

2009 ◽  
pp. 194-194-13 ◽  
Author(s):  
AM Fish ◽  
FH Sayles
Keyword(s):  
Acoustic Emissions ◽  
Frozen Soils

Oto Acoustic Emissions (OAE): the shape-similarity of pure-tone audiogram and OAE-gram

1999 ◽  
Vol 24 (4) ◽  
pp. 377-383
Author(s):  
G. A. van zanten ◽  
A. van de sande ◽  
M. P. brocaar
Keyword(s):  
Pure Tone ◽  
Acoustic Emissions ◽  
Shape Similarity ◽  
Pure Tone Audiogram

Naturally Frozen Soils from the Field to the Laboratory

ISCORD 2013 ◽  
2013 ◽  
Author(s):  
Benjamin A. Still ◽  
Zhaohui (Joey) Yang ◽  
Xiaoxuan Ge ◽  
Anthony Paris
Keyword(s):  
Frozen Soils

Enzymatic activity of strains of bacteria Bacillus subtilis isolated from frozen soils

2020 ◽  
Vol 1 (1) ◽  
pp. 73-79
Author(s):  
M.P. Scriabina ◽  
◽  
A.M. Stepanova ◽  
N.P. Tarabukina ◽  
M.P. Neustroev ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Enzymatic Activity ◽  
Frozen Soils

Melting of ice in a porous medium saturated with ice and gas while injecting warm water

2019 ◽  
Vol 13 (4) ◽  
pp. 112-117 ◽  
Author(s):  
V.Sh. Shagapov ◽  
M.N. Zapivakhina
Keyword(s):  
Mass Transfer ◽  
Porous Medium ◽  
Low Temperature ◽  
Numerical Models ◽  
Warm Water ◽  
Temperature Fields ◽  
Initial State ◽  
Simplified Models ◽  
Frozen Soils ◽  
Porous Formation

The numerical models for the injection of warm water (in the temperature range from 300 to 340 K) into a cold porous formation are considered. Simplified models describing the processes of heat and mass transfer are proposed. The influence of the parameters determining the initial state of the porous medium, the boundary pressure, temperature and moisture content on the rate of propagation of hydrodynamic and temperature fields in the porous medium is investigated. It has been established that it is economically feasible to melt frozen soils saturated with ice and gas (air) at a sufficiently low temperature of the injected water (about 300 K).

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