Results 11 to 20 of about 427,015 (306)
Bone Density and Fracture Risk in Men [PDF]
Journal of Bone and Mineral Research, 1998 Abstract We evaluated different definitions of osteoporosis in a population-based sample of 348 men (age 22–90 years) compared with 351 women (age 21–93 years). Thirty-six men (10%) and 46 women (13%) had a history of osteoporotic fracture (hip, spine, or distal forearm due to moderate trauma at ≥ age 35). In logistic regression analysis,
L J, Melton +4 more
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Correlation Between Bone Density and Lumbar Compression Fractures [PDF]
Gerontology and Geriatric Medicine, 2020 Objectives: Bone densitometry is widely used to evaluate osteoporosis; however, it is pointed out that bone density may be high in the case of fractures, deformities, and osteosclerotic changes. The present study evaluated bone density measured at our hospital and evaluated its correlation with the presence or absence of lumbar spine fractures ...
Toshihide Takahashi +5 more
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Development characteristics of multi-scale fracture network systems in metamorphic buried hills
Frontiers in Earth Science, 2023 Natural fractures are regarded as important reservoir spaces and effective seepage channels at metamorphic buried hills. Continuous networks associated with multi-scale fractures with good connectivity is critical for high-quality reservoirs as well as ...
Lijun Mi +8 more
doaj +1 more source
Geodesy and Cartography, 2016 Image logs are presently the main specialized tools for fracture detection in hydrocarbon reservoirs. Where image logs are not available, other less rewarding substitutes such as isolated well tests and type curve analysis, drilling mud loss history ...
Mohammad Abdideh
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Transverse fracture properties of green wood and the anatomy of six temperate tree species [PDF]
, 2016 © Institute of Chartered Foresters, 2016. All rights reserved. The aim of this study was to investigate the effect of wood anatomy and density on the mechanics of fracture when wood is split in the radial-longitudinal (RL) and tangential-longitudinal (TL)
Cattaneo, Marco E. G. V. +3 more
core +1 more source
Alkenylation and Allylation of Aldehydes by Using an Ni/Cr/TDAE Redox System [PDF]
, 2001 In 360 females, Bone mineral density (BMD) in lumbar vertebrae (L2-L4) was assessed by quantitative computed tomography (QCT), and the values obtained were compared with the frequency of vertebral transformation or fracture as assessed by lateral scan ...
Goto, Kentaro +4 more
core +1 more source
On the Density Variability of Poissonian Discrete Fracture Networks, with application to power-law fracture size distributions [PDF]
Advances in Geosciences, 2019 This paper presents analytical solutions to estimate at any scale the fracture density variability associated to stochastic Discrete Fracture Networks.
E. Lavoine +4 more
doaj +1 more source
Statistical properties of fracture in a random spring model [PDF]
, 2005 Using large scale numerical simulations we analyze the statistical properties of fracture in the two dimensional random spring model and compare it with its scalar counterpart: the random fuse model.
A. Hansen +9 more
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Fracture behaviour of alloys for a new laser ranged satellite [PDF]
, 2018 A new laser-ranged satellite called LARES 2 (Laser Relativity Satellite 2) has been recently designed for accurate tests of Einsten's theory of General Relativity and space geodesy.
Brotzu, A. +4 more
core +1 more source
Geofluids, 2022 Understanding the relationship between petroleum recovery and characteristics of hydraulic fracture network is a key component of economic development of tight reservoirs. Owing to the limitations inherent in current reservoir simulators, optimization of
Wenchao Fang +6 more
doaj +1 more source