Results 31 to 40 of about 1,429,445 (306)

Fracture nonunion

open access: yesPan African Medical Journal, 2021
A fracture that lasts for a minimum of nine months without signs of healing for three months is the standard description of nonunion. Plethora of literatures highlights the determinants that increase the risk of nonunion as infections, older age, diabetes, anti-inflammatory drugs, use of tobacco/nicotine, open/compound fracture, low vitamin-D ...
Pragadeesh Palaniappan   +1 more
openaire   +3 more sources

The Clinical Frailty Scale is a valid and independent predictor of one-year survival in patients sustaining a hip fracture: scottish Hip Fracture Audit data from 8,092 patients

open access: yesBone & Joint Open
Aims: Hip fracture patients have a significant mortality risk. Risk stratification tools are important in guiding management and family discussions.
Matthew J. Kennedy   +8 more
doaj   +1 more source

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

open access: yesMetals, 2016
The influence of loading rate (crosshead speed) on the fracture process of bluntly notched samples of pearlitic steel under hydrogen environment is analyzed in this paper.
Jesús Toribio   +2 more
doaj   +1 more source

Fracture Model Reduction and Optimization for Forchheimer Flows in Reservoir

open access: yes, 2017
In this study, we analyze the flow filtration process of slightly compressible fluids in fractured porous media. We model the coupled fractured porous media system, where the linear Darcy flow is considered in porous media and the nonlinear Forchheimer ...
Aulisa, Eugenio   +3 more
core   +1 more source

Effects of fracture aperture and roughness on hydraulic and mechanical properties of rocks : implication of seismic characterization of fractured reservoirs [PDF]

open access: yes, 2005
Roughness and aperture are two important characteristic parameters controlling fluid flow in natural joints and fractures. It has been demonstrated by many authors that knowledge of roughness does not directly lead to that of aperture, and aperture ...
Liu, Enru
core   +1 more source

Role of Non-Metallic Inclusions in the Fracture Behavior of Cold Drawn Pearlitic Steel

open access: yesMetals, 2021
In this paper an exhaustive scientific work is performed, by means of metallographic and scanning electron microscope (SEM) techniques, of the microstructural defects exhibited by pearlitic steels and their evolution with the manufacturing process by ...
Jesús Toribio   +2 more
doaj   +1 more source

Presidential Succession and Disability [PDF]

open access: yes, 1956
Background: Recent research in a large cohort of women showed that coffee consumption is not associated with increased risk of fracture. Whether this is the case also among men is less clear. Methods: In the Cohort of Swedish Men (COSM) study, 42,978 men
Byberg, Liisa   +4 more
core   +4 more sources

Hydraulic fracture propagation in naturally fractured reservoirs: Complex fracture or fracture networks [PDF]

open access: yesJournal of Natural Gas Science and Engineering, 2019
Understanding the behavior of fluid-driven hydraulic fracture in naturally fractured reservoirs is crucial in the development of geothermal energy and unconventional reservoirs. This study presents a fully-coupled numerical model to investigate hydraulic propagation in naturally fractured reservoirs, along with a comprehensive discussion on field ...
openaire   +2 more sources

Numerical Modeling of Plasticity-Induced Fatigue Crack Growth Retardation Due to Deflection in the Near-Tip Area

open access: yesMetals, 2021
This article studies the retardation effect in plasticity-induced fatigue crack growth rate for a low-medium strength steel, due to the appearance of microdeflections in the crack path.
Jesús Toribio   +2 more
doaj   +1 more source

Psychiatric illness predicts poor outcome after surgery for hip fracture: a prospective cohort study [PDF]

open access: yes, 2000
Background. Hip fracture is common in the elderly. Previous studies suggest that psychiatric illness is common and predicts poor outcome, but have methodological weaknesses. Further studies are required to address this important issue. Methods.
Holmes, J., House, A.
core   +1 more source

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