Results 21 to 30 of about 165,525 (289)
Vertebral Fractures Predict Subsequent Fractures
Osteoporosis International, 1999 This population-based study documents an increase in most types of fractures following the occurrence of a clinically recognized vertebral fracture among 820 Rochester, Minnesota, residents. During 4349 person-years of follow-up, 896 new fractures were observed.
Melton, L +4 more
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Pan 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
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Georesursy, 2018 The distribution of fracturing and the type of fluid saturation in the geological environment, along with its structure, is the most important information for optimal development of oil and gas fields, including their search, exploration and development.
O.L. Kuznetsov +5 more
doaj +1 more source
Dynamic development of hydrofracture [PDF]
, 2013 Many natural examples of complex joint and vein networks in layered sedimentary rocks are hydrofractures that form by a combination of pore fluid overpressure and tectonic stresses.
Ghani, Irfan +3 more
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L-Shape based Layout Fracturing for E-Beam Lithography
, 2014 Layout fracturing is a fundamental step in mask data preparation and e-beam lithography (EBL) writing. To increase EBL throughput, recently a new L-shape writing strategy is proposed, which calls for new L-shape fracturing, versus the conventional ...
Gao, Jhih-Rong, Pan, David Z., Yu, Bei
core +1 more source
Numerical methods of geomechanics tasks solution during coal deposits’ development [PDF]
, 2016 Purpose. Generalization of numerical modeling of geomechanical processes in the vicinity of mine workings by finite elements method and making recommendations for substantiation of suitable construction and behavior of rock massif physical model ...
Bondarenko, V +4 more
core +2 more sources
Balancing Hydraulic Fracturing’s Environmental and Economic Impacts: The Need for a Comprehensive Federal Baseline and the Provision of Local Rights [PDF]
, 2013 Reliable evaluation methods is needed to ensure that investments in energy conservation measures (ECMs) and the construction of new energy efficient buildings lives up to the promised and expected performance.
Garmezy, Adam
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Field experiments and main understanding of shale oil hydraulic fracturing
Frontiers in Earth ScienceTo understand the key processes of hydraulic fracturing in shale oil reservoirs, such as artificial fracture initiation and extension, proppant transportation and settlement, and the influencing factors of post-fracture production, many hydraulic ...
Mengyun Zhao, Mengyun Zhao, Mengyun Zhao
doaj +1 more source
Research on the timing of polymer flooding oil and water well fracturing [PDF]
E3S Web of ConferencesFracturing technology is the main measure to increase production and injection in oilfield production. With the gradual expansion of the scale of polymer flooding, the proportion of fractured Wells also increases year by year.
Zhang Wei
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Hydraulic fracture propagation in naturally fractured reservoirs: Complex fracture or fracture networks [PDF]
Journal 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