Reinforcing Mechanism Constant Pressure Direct Shear Tests on Sand

Effect of Cementation on the Shear Strength of Tehran Gravelly Sand Using Triaxial Tests

Three-Dimensional Discrete Element Simulations of Direct Shear Tests

Using discrete element methods, geotechnical engineers can create “virtual laboratories” to simulate conventional laboratory tests. In this study, three-dimensional DEM simulations of direct shear tests are coupled with equivalent physical tests on steel balls. The macro-scale response of simulations is compared with the physical test results to validate the discrete element model and to gain i...

Permeability and Direct Shear Tests Characteristics of Railway Subballast

Permeability, filtration and shearing strength were widely considered to be the key properties in evaluating the performance of railway subballast. An investigation on these key properties of railway subballast was presented in this paper. A constant head permeability test and a middle scale direct shear test of railway subballast were conducted in the research, aiming to investigate the subbal...

effect of cementation on the shear strength of tehran gravelly sand using triaxial tests

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Usefulness of reinforcing interventions on continuous positive airway pressure compliance

BACKGROUND Obstructive sleep apnea (OSA) is a high prevalence sleep disorder characterized by upper airway obstruction during sleep, nocturnal intermittent hypoxemia, poor sleep quality, risk for cardiovascular and metabolic diseases. The adherence to CPAP is the key for an effective management of these patients.The aim of the study was to assess the adherence to CPAP therapy with and without e...