Abstract The Mu Us Desert in China is significantly affected by seasonal freeze–thaw processes. In order to evaluate the adaptation potential of reconstituted soil with different proportions feldspathic sandstone and sand extreme environment, laboratory simulation freeze-thaw experiments was conducted study characteristics C N under conditions. results showed that content organic matter reached...

The quality of excavated and unloaded rock masses on steep high slopes in cold regions is prone to deterioration, which turn affects the long-term stability safety slopes. Based a triaxial unloading-damage test sandstone, unloading quantity was used analyze evolution law damage; freeze-thaw cycle unloaded-damaged samples carried out, it found that average change porosity reloading peak strength...

In machine learning, the term “training” is used to describe the procedure of fitting a model to data. In many popular models, this fitting procedure is framed as an optimization problem, in which a loss is minimized as a function of the parameters. In all but the simplest machine learning models, this minimization must be performed with an iterative algorithm such as stochastic gradient descen...

Indigenous bacteria and biomolecules (DNA and proteins) in a freeze-dried and homogenized Arctic permafrost were exposed to simulated martian conditions that correspond to about 80 days on the surface of Mars with respect to the accumulated UV dose. The simulation conditions included UV radiation, freeze-thaw cycles, the atmospheric gas composition, and pressure. The homogenized permafrost core...

Most concrete currently used in pavement is based on Portland cement (PC), being responsible for 8-10% of total CO 2 emission. Moreover, external pavements are subjected to exposure classes XF4 and XD3 which related corrosion freeze-thaw. Freeze-thaw resistance an important durability property concrete, especially that the de-icing salts. This study was designed explore freeze-thaw mass scaling...