PURPOSE To examine the relationships between anterior knee laxity (AKL), genu recurvatum (GR), and general joint laxity (GJL) with sagittal plane energetics in males and females during a drop jump task. METHODS A total of 68 females and 50 males were measured for AKL, GR, and GJL and were instrumented to obtain neuromuscular and biomechanical data on their dominant limb during the initial lan...

The hydraulic performance and mechanical stability of open fractures are crucial for several subsurface applications including fractured geothermal reservoirs or nuclear waste repositories. Their properties (fluid flow fracture stiffness) both strongly dependent on the geometry. Any change in effective stress impacts aperture thus ability to promote flow. Here, we carried out experiments with s...

seismic piezocone device (scptu) together with resonant column and cyclic triaxial test apparatus are employed to measure small strain shear modulus (g0) of carbonate sandy and clayey soils of southern coasts of iran. a large area of southern regions of iran is formed from clay, silt and sand. in this study, maximum shear modulus that is derived from both field (by seismic piezocone) and labora...

The work deals with a problem of estimation of spring stiffness under conditions of uncertainty of its loading and compression measurements. During spring exploitation, the main its parameters stiffness and initial length change since of the metal strain aging. At the spring checking, values of its compression are measured in the necessary range of loading. It is used to describe the spring com...

abstract aims: the application of photocatalytic processes to remove heavy metals in aqueous solutions and industrial wastewater are regarded as extremely effective, clean and without producing waste methods. the goal of the present study was to investigate the photocatalytic activity of zno based on h-zsm-5 zeolite support. materials & methods: zno/h-zsm-5 composite synthesized by impregnation...

' 2005 CMA Media Inc. Can J Surg, Vol. 48, No. 2, April 2005 159 Fractures of the atlas vertebra are rare in children. A history of trauma combined with the classical signs of neck pain, head tilt, diminished cervical range of motion and cervical muscle stiffness should alert the clinician to the possibility of an atlas fracture. Initial radiographs may be equivocal; further images should be ma...

initial cracks occur in high strength concrete sleepers for various reasons, such as shrinkage and wrong curing and long lifetime of over 50 years of sleepers. these cracks may lead to complete failure of the structure. in order to more accurately design the sleepers, fracture mechanics (not strength of materials) should be incorporated. in order to achieve this purpose, it is important to fore...

BACKGROUND Ambulatory arterial stiffness index (AASI) has been proposed as an indirect measure of arterial stiffness. The aims of this study were (i) to analyze AASI and pulse pressure (PP) in micro- and normoalbuminuric type 1 diabetes mellitus (T1DM) patients and healthy controls and (ii) to explore the relation between nocturnal blood pressure (BP) reduction, BP variability, and AASI. METH...