Comparison of epoch and uniaxial versus triaxial accelerometers in the measurement of physical activity in preschool children : a validation study [PDF]
, 2012 The objectives of this Study were to explore whether triaxial is more accurate than uniaxial accelerometry and whether shorter sampling periods (epochs) are more accurate than longer epochs. Physical activity data from uniaxial and triaxial (RT3) devices
Bulley, Catherine +3 more
core +4 more sources
Aplicación de criterios de rotura no lineales a la estabilidad general de taludes en macizos no rocosos [PDF]
, 2003 Para el diseño de grandes taludes en macizos rocosos frente a roturas circulares, el terreno se ha modelizado como un medio isótropo, elástico perfectamente plástico, sin dilatancia, y con un criterio de rotura tipo Hoek-Brown.
Puell Marín, Fernando
core +1 more source
Validity of hip-mounted uniaxial accelerometry with heart rate monitoring [PDF]
, 2012 One of the aims of Identification and Prevention of Dietary- and Lifestyle-Induced Health Effects in Children and Infants (IDEFICS) validation study is to validate field measures of physical activity (PA) and energy expenditure (EE) in young children ...
Huybrechts, Inge +14 more
core +5 more sources
Comparación de métodos experimentales para medir la permeabilidad al agua en rocas de construcción porosas [PDF]
, 2014 This paper compares different experimental methods for measuring water permeability in 17 different porous building rocks. Both commercial apparatus and specially made designed permeameters are used for characterising intrinsic permeability and hydraulic
Pla, Concepción +13 more
core +1 more source
Yielding of unsaturated soil. [PDF]
, 1994 Considerable efforts have been made in recent years to develop a better understanding of the mechanical behaviour of unsaturated soils in terms of elastoplastic critical state constitutive models.
Zakaria, Ideris
core +4 more sources
Investigation of stabilized Berea Red soil with emphasis on tensile and cyclic triaxial tests [PDF]
, 1989 Includes bibliographical references.This dissertation investigates the soil mechanical properties of a sample of Berea Red soil and the most suitable methods of treatment to improve it.
Clayton, Russell Adrian
core +1 more source
Design and fabrication of a low cost true triaxial cell for testing multiple size specimens
, 2012 Only a true triaxial cell has the ability to recreate 3D in situ stress conditions. Therefore a true triaxial cell was designed and fabricated. The cell was calibrated to ensure the lateral strains on the specimen were known during testing, and a ...
Schwartzkopff, A. +3 more
core +1 more source
Petrología Sedimentaria. Ejercicios de Visu. 7. Rocas detríticas: 2 Arenáceas
, 2015 En este tema continuamos con el estudio de las rocas detríticas, el grupo que estudiamos son las Rocas Arenáceas. El objetivo es la familiarización con estas rocas mediante el estudio de muestras de mano, aquí incluimos una imagen de dichas muestras. Los
Alonso Zarza, Ana María
core +1 more source
Máquina de ensayo triaxial [PDF]
, 2014 "El proyecto consiste en el diseño de una máquina de ensayo triaxial para muestras de rocas que son consideradas potenciales recursos de petróleo no convencionales.La mayor inclinación de las empresas de la industria petrolera a explorar y desarrollar ...
Paterlini, Federico, Blanco, Santiago
core
Shearing tests with continuously increasing normal stress [PDF]
, 2006 In the conventional shearing tests the normal force or the normal stiffness are kept constant during the experiment. Sliding under constant normal load occurs in slopes if the environment is not changing during the process.
Ván, Péter, Vásárhelyi, Balázs
core +1 more source