Results 11 to 20 of about 429,065 (303)

Muscle density is an independent risk factor of second hip fracture: a prospective cohort study

open access: yesJournal of Cachexia, Sarcopenia and Muscle, 2022
Background Patients with a first hip fracture are at high risk of fracturing their other hip. Despite this, preventive therapy is often not given.
Ling Wang   +21 more
doaj   +2 more sources

Characterization of the length of structural fractures in low permeability reservoirs and its application: a case study of Longwangmiao Formation in Moxi-Gaoshiti areas, Sichuan Basin

open access: yesShiyou shiyan dizhi, 2022
In order to classify the quantitative characterization method of structural fracture length in low-permeability reservoirs, the Cambrian Longwangmiao Formation of Moxi-Gaoshiti areas in the Sichuan Basin is taken an example in this study.
Ke SUN, Ke XU, Qinghua CHEN
doaj   +1 more source

Correlation Between Bone Density and Lumbar Compression Fractures [PDF]

open access: yesGerontology 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
openaire   +3 more sources

Estimation of the fracture density in reservoir rock using regression analysis of the petrophysical data

open access: yesGeodesy 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
doaj   +1 more source

Development characteristics of multi-scale fracture network systems in metamorphic buried hills

open access: yesFrontiers 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

Transverse fracture properties of green wood and the anatomy of six temperate tree species [PDF]

open access: yes, 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

On the Density Variability of Poissonian Discrete Fracture Networks, with application to power-law fracture size distributions [PDF]

open access: yesAdvances 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]

open access: yes, 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
core   +2 more sources

Fracture behaviour of alloys for a new laser ranged satellite [PDF]

open access: yes, 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

Quantitative Evaluation of Well Performance Affected by Fracture Density and Fracture Connectivity in Fractured Tight Reservoirs

open access: yesGeofluids, 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

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