نتایج جستجو برای: fracture analysis

تعداد نتایج: 2903774  

2017
Chia-Ying Yu Fang-Ping Chen Li-Wei Chen Sheng-Fong Kuo Rong-Nan Chien

Osteoporosis and metabolic syndrome (MS) share similar risk factors. Previous studies of association between bone marrow density (BMD) and MS are controversial. Moreover, some studies revealed that MS is associated with BMD but not with bone fracture. In clinical practice, patients pay more attention to bone fracture risk than BMD values. Hence, this study aimed to evaluate the association betw...

Journal: :archives of trauma research 0
gavin john heyes department of orthopedics, musgrave park hospital, stockman’s lane belfast, northern ireland; department of orthopedics, musgrave park hospital, stockman’s lane belfast, northern ireland. tel: +44-7823333140 adam tucker department of trauma and orthopedics, altnagelvin hospital, county londonderry, northern ireland dominic marley department of trauma and orthopedics, altnagelvin hospital, county londonderry, northern ireland andrew foster department of trauma and orthopedics, altnagelvin hospital, county londonderry, northern ireland

background at altnagelvin, a district general hospital in northern ireland, we have observed that a significant number of hip fracture admissions are later readmitted for treatment of other medical conditions. these readmissions place increasing stress on the already significant burden that orthopedic trauma poses on national health services. objectives the aim of this study was to review a ser...

2001
S Rahman J S Kim

A probabilistic methodology has been developed for fracture-mechanics analysis of nonlinear cracked structures. The methodology involves nonlinear ®nite element analysis using well-known commercial codes; statistical models for uncertainty in material constitutive law, fracture toughness, and loads; and standard reliability methods for evaluating probabilistic characteristics of elastic±plastic...

2013
Lei Zhao Liehui Zhang Yilin Wang

The key of effective development for the fractured reservoir is to describe the distribution of the fracture and build the fracture geological model. To acquire more optimal exploration and development of the oilfield, objective geologic model of reservoir fractures is needed for further knowledge of the spatial distribution condition of fractures. Adopting well-logging and seismic techniques c...

2015
Qing-Bo Lv Xin Fu Hai-Ming Jin Hai-Chao Xu Zhe-Yu Huang Hua-Zi Xu Yong-Long Chi Ai-Min Wu

The relationship between weight change and risk of hip fracture is still controversial. We searched PubMed and Embase for studies on weight change and risk of hip fracture. Eight prospective studies were included. The weight loss studies included 85592 participants with 1374 hip fractures, and the weight gain studies included 80768 participants with 732 hip fractures. Weight loss is more likely...

2016
Anthony Barone Mrinal K. Sen

The work presented here describes a novel fracture characterization technique that utilizes azimuthal amplitude variations (AVAZ) present in 3D seismic data to deduce subsurface fracturing characteristics. We apply this technique to both synthetic data and real data from the Haynesville Shale. The method we propose is able to unambiguously invert for fracture azimuth, and does not suffer from a...

2013
John H Krege Xiaohai Wan Brian C Lentle Claudie Berger Lisa Langsetmo Jonathan D Adachi Jerilynn C Prior Alan Tenenhouse Jacques P Brown Nancy Kreiger Wojciech P Olszynski Robert G Josse David Goltzman Suzanne Godmaire Silvia Dumont Wei Zhou Carol Joyce Christopher Kovacs Emma Sheppard Susan Kirkland Stephanie Kaiser Barbara Stanfield Jacques P Brown Louis Bessette Marc Gendreau Tassos Anastassiades Tanveer Towheed Barbara Matthews Bob Josse Sophie Jamal Tim Murray Barbara Gardner-Bray Jonathan D. Adachi Alexandra Papaioannou Laura Pickard Wojciech P. Olszynski K. Shawn Davison Jola Thingvold David A. Hanley Jane Allan Jerilynn C. Prior Millan Patel Yvette Vigna Nerkeza Andjelic Brian Lentle

Our purpose was to identify factors for a parsimonious fracture risk assessment model considering morphometric spine fracture status, femoral neck bone mineral density (BMD) and the World Health Organization (WHO) clinical risk factors. Using data from 2761 subjects from the Canadian Multicentre Osteoporosis Study (CaMos), a prospective, longitudinal cohort study of randomly selected community-...

Journal: :مکانیک هوافضا 0
احسان براتی یونس علیزاده جمشید آقازاده

in this paper, the mean value of strain energy density criterion has been used to predict the critical fracture load in specimens with u-shaped notch under bending loads. an equation for calculation of averaged strain energy density in this zone has been presented. bending loads under mode i have been considered. two cases have been studied: 1) the control volume only includes the semicircular ...

2010
Suresh Kumar

ABSTRACT Modeling of fluid flow and solute transport through fractured rock is an important component of engineering analysis in many disciplines including groundwater contamination, nuclear waste disposal, petroleum and gas production, mine excavation and geothermal production. Several studies have been conducted on single rock fracture using parallel plate model. An attempt has been made to s...

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