Embedded fracture networks in rock masses are studied. The fluid flow in fracture networks with respect to variation of connectivity patterns is analyzed. Lattice Boltzmann method is used to show sensitivity of the permeability and fluid velocity distribution to connectivity patterns of generated fracture networks. Furthermore, fracture networks are mapped into the graphs and the characteristic...

AIM To compare clinical characteristics and outcome of nonagenarian hip fracture patients with younger patients aged 65-89 years. METHODS This was a cohort follow-up study of admissions for a hip fracture between 2005-2010 (mean follow up of 3.5 years) in two teaching hospitals in The Netherlands; 230 nonagenarians and 1014 patients aged 65-89 years were included. Clinical characteristics, ad...

Background & Aims: Tibia fractures are the most common long bone fracture. Due to minimal soft tissue and its blood supply, inadequate treatment of injuries could be a major cause of morbidity and disability. The intramedullary nail is the preferred method of treatment; however, despite all previous studies, no accurate method to measure nail length prior to surgery exists as yet. Due to the im...

We consider the influences of correlation length and aperture variability on the REV, the equivalent permeability of a fracture network, and the uncertainty in the equivalent permeability using a two-dimensional orthogonal bond percolation model. The percolation threshold, correlation length, effective conductivity, and coefficient of variation of the effective conductivity are investigated ove...

The mode II initiation fracture toughness of wood was measured by the three-point bend endnotched flexure (3ENF) test for various crack lengths, and the dependence of toughness on the crack length was analyzed by the four conventional methods of data reduction : elementary beam theory, Williams end correction method, and two compliance calibration methods. In addition to these methods, the comp...