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Stress Concentrations in Weak Snowpack Layers and Conditions for Slab Avalanche Release
(2018)Geophysical Research LettersDry-snow slab avalanches release due to the formation of a crack in a weak layer buried below cohesive snow slabs, followed by rapid crack propagation. The onset of rapid crack propagation occurs if stresses at the crack tip in the weak layer overcome its strength. In this study, we use the finite element method to evaluate the maximum shear stress τmax induced by a preexisting crack in a weak snow layer allowing for the bending of the ...Journal Article -
Decreased reward value of biological motion among individuals with autistic traits
(2018)CognitionThe Social Motivation Theory posits that a reduced sensitivity to the value of social stimuli, specifically faces, can account for social impairments in Autism Spectrum Disorders (ASD). Research has demonstrated that typically developing (TD) individuals preferentially orient towards another type of salient social stimulus, namely biological motion. Individuals with ASD, however, do not show this preference. While the reward value of faces ...Journal Article -
Volatile loss following cooling and accretion of the Moon revealed by chromium isotopes
(2018)Proceedings of the National Academy of Sciences of the United States of AmericaTerrestrial and lunar rocks share chemical and isotopic similarities in refractory elements, suggestive of a common precursor. By contrast, the marked depletion of volatile elements in lunar rocks together with their enrichment in heavy isotopes compared with Earth’s mantle suggests that the Moon underwent evaporative loss of volatiles. However, whether equilibrium prevailed during evaporation and, if so, at what conditions (temperature, ...Journal Article -
Physical and mechanical properties of fly ash and slag geopolymer concrete containing different types of micro-encapsulated phase change materials
(2018)Construction and Building MaterialsA mix design procedure for geopolymer concrete (GPC) was developed in order to maintain a high compressive strength after adding micro-encapsulated phase change materials (MPCM). The most relevant factors which affect the properties of fly ash/slag based GPC containing MPCM are considered. Class F fly ash and slag, sodium hydroxide and sodium silicates were chosen as binder and alkaline solution, respectively. Two types of MPCM were used ...Journal Article