• Although the relationship between reservoir formation permeability and fractures is complex, it is recognized that fractures play an important role in reservoir fluid flow. (bris.ac.uk)
  • A wide range of methods have been used to numerically simulate permeability enhancement in porous and fractured media including models based on damage mechanics, discrete fracture mechanics, critical shear strain criteria, effective stress, and even empirical permeability multipliers. (psu.edu)
  • The model incorporates an energy release rate microcrack model in mixed modes (opening - I and shear - II) to simulate damage and permeability enhancement. (psu.edu)
  • Research in the Transport Properties Research Laboratory (TPRL) and the Fracture Physics Laboratory (FPL) focuses on understanding the mechanisms and processes governing the movement of fluids (water, gas and solutes) and the deformation of rock in the subsurface, specialising in the measurement of properties in ultra-low permeability materials. (bgs.ac.uk)
  • With careful attention to experimental design, choice of instrumentation, calibration and regulation of testing conditions, the laboratories are able to quantify key properties for intact, fractured and flow along interfaces for low permeability materials. (bgs.ac.uk)
  • The goal is to develop better ways to explore for natural gas in tight sand reservoirs by demonstrating the applicability of a new exploration technology that identifies areas of high density natural fractures (and, thus, high gas well productivity) in otherwise low-permeability (low productivity) geologic settings. (doe.gov)
  • The geomechanical approach has proven most effective in areas of subtle structure where the reservoir behaves elastically and has proven to be less effective in areas where deformation has been more extreme and reservoir permeability is dominated by stress-insensitive shear fractures. (doe.gov)
  • Expanded of the technology scope to include aspects of viscoelastic and discrete fracture network modeling to more closely approximate the complex permeability fabric of naturally fractured reservoirs, and established techniques for determining the appropriate technology to apply to particular fracture faces. (doe.gov)
  • The potential for using such stress modeling to estimate in-situ bulk permeability within naturally fractured reservoirs was first observed in the Rulison area of the Southern Piceance Basin. (doe.gov)
  • Here, we include a case study of this device function which is shown here through shearing of a fractured shale core and simultaneous observation of the mechanical changes and evolution of the hydraulic properties during shearing. (osti.gov)
  • Companies are focusing on increasing the productivity of crude oil from existing oil wells by deploying cutting-edge technologies for exploring shale gas, which directly impacts the growth of the hydraulic fracturing market over the forecast period. (articleshore.com)
  • Using a combination of computer modeling, field tests, and laboratory experiments utilizing Marcellus Shale core samples, researchers will seek to improve understanding of the interactions between shale and fracturing fluids, and the impacts of such interactions on well productivity. (greencarcongress.com)
  • Enhanced geothermal energy production requires the stimulation of natural fracture pathways to increase fluid flow within a reservoir while still effectively recovering the heat. (psu.edu)
  • The purpose of this project is to demonstrate the applicability of a geomechanical exploration model using three-dimensional seismic data and local/regional stress data to predict the location and character of natural fracture clusters. (doe.gov)
  • We have computed a grey level image from geostatistical 3D reconstruction of a natural fracture surface. (ac.be)
  • We explore the use of damage mechanics to represent hydraulic fracturing/shearing within the reservoir. (psu.edu)
  • Moreover, studies not directly addressing hemorrhage with pelvic fracture were excluded. (east.org)
  • [ 6 ] Arterial injuries also may contribute to hemorrhage with pelvic fractures, albeit less commonly than venous bleeding. (medscape.com)
  • This paper discusses the determination of in situ stress regime and its resulting impact on hydraulic fracture geometry through an analysis of two datasets that were acquired in a vertical well and a nearby horizontal well in a Canadian reservoir. (onepetro.org)
  • The analysis showed approximately 7% acoustic wave anisotropy for both compressional and shear wave in this part of the reservoir. (onepetro.org)
  • Our research focus has been on sealing properties of caprocks, reservoir rocks, and fracture and fault flow, with emphasis on changes in properties related to the depletion of reservoirs and the re-inflation resulting from injection of CO 2 . (bgs.ac.uk)
  • Integration of these techniques with some level or combination of seismic attributes (within a mutually supportive framework) is presently viewed as the most likely path to yield a true "breakthrough" in naturally fractured reservoir exploration. (doe.gov)
  • Adolescents typically present with avulsion fractures of the superior or inferior iliac spines or with apophyseal avulsion fractures of the iliac wing or ischial tuberosity resulting from an athletic injury. (medscape.com)
  • Epiphyseal injuries are usually due to shearing and avulsion forces, although compression also plays a significant role. (medscape.com)
  • Mallet Finger Mallet finger is a flexion deformity of the fingertip caused by avulsion of the extensor tendon, with or without fracture, from the proximal end of the distal phalanx. (msdmanuals.com)
  • In 2nd EAGE Workshop Naturally Fractured Reservoirs: Naturally Fractured Reservoirs in Real Life European Association of Geoscientists and Engineers, EAGE. (bris.ac.uk)
  • The global hydraulic fracturing market size is expected to grow from USD 24.6 billion in 2020 and reach USD 38.1 Billion by 2027 , at a CAGR of 7.6% during the forecast period (2021-2027). (articleshore.com)
  • The growing demands for oil, natural gases, and other resources are increasing globally, which is estimated to fuel the growth of the hydraulic fracturing market. (articleshore.com)
  • There is a huge demand for natural gases and hydrocarbons in today's parlance, which has driven the need for hydraulic fracturing activities and investments. (articleshore.com)
  • Moreover, setting up unconventional or tight reserves at different specific levels has increased the demand for hydraulic fracturing and supported the global market growth. (articleshore.com)
  • However, the strict rules and regulations by the government and other regular bodies lead to environmental protection, which has posed a challenge for the growth of the hydraulic fracturing market. (articleshore.com)
  • This has a positive impact on the growth of the hydraulic fracturing market. (articleshore.com)
  • The impact of the pandemic on the hydraulic fracturing market was mild. (articleshore.com)
  • The report outlines the global Hydraulic Fracturing market study based on type and platforms. (articleshore.com)
  • Based on the region, the global hydraulic fracturing market has been segmented into five geographical regions, namely, North America, Asia Pacific, Europe, South America, and the Middle East and Africa. (articleshore.com)
  • In 2021, North America held the largest share in the global hydraulic fracturing market, followed by Europe and Asia-Pacific. (articleshore.com)
  • The Asia Pacific is also estimated to hold a significant share in the global hydraulic fracturing market due to increasing demand from China and India. (articleshore.com)
  • The global hydraulic fracturing market is fairly consolidated, with key players across the globe. (articleshore.com)
  • The hydraulic fracturing market report thoroughly analyzes macro-economic factors and every segment's market attractiveness. (articleshore.com)
  • Important mechanisms of stimulation include tensile failure by hydraulic fracturing or shear failure by hydraulic shearing. (psu.edu)
  • As fluid pressure is increased, near wellbore mode II failure transitions to mode I hydraulic fracturing and rapidly increasing damage. (psu.edu)
  • improved understanding of the hydraulic fracturing process. (greencarcongress.com)
  • The results will provide new guidelines on optimal choices for hydraulic fracturing treatment design and the treatment and reuse of fracture flowback water. (greencarcongress.com)
  • Shear pins are commonly used elements integrated with seismic isolation bearings to restrict the relative displacement between the superstructure and the substructure. (ktu.lt)
  • article{osti_1491099, title = {Design and implementation of a shearing apparatus for the experimental study of shear displacement in rocks}, author = {Moore, Johnathan and Crandall, Dustin and Gill, Magdalena and Brown, Sarah and Tennant, Bryan}, abstractNote = {Fluid flow in the subsurface is not well understood in the context of "impermeable" geologic media. (osti.gov)
  • The authors hypothesize that excavation-induced extension fractures are caused by elastic shearing displacement that in turn causes tension oblique to a propagating shear zone. (cdc.gov)
  • Then we try to link them with damaged areas occurring during sliding (mechanical deformation depending on applied normal stress and shear displacement) and we propose some criteria to predict these damaged areas. (ac.be)
  • The earliest management of pelvic fractures consisted of prolonged recumbency followed by mobilization as fracture healing occurred and symptoms abated. (medscape.com)
  • A shear zone is a zone of strong deformation (with a high strain rate) surrounded by rocks with a lower state of finite strain. (wikipedia.org)
  • In brittle shear zones, the deformation is concentrated in a narrow fracture surface separating the wall rocks, whereas in a ductile shear zone the deformation is spread out through a wider zone, the deformation state varying continuously from wall to wall. (wikipedia.org)
  • This continuum found in the structural geometries of shear zones reflects the different deformation mechanisms reigning in the crust, i.e. the changeover from brittle (fracturing) at or near the surface to ductile (flow) deformation with increasing depth. (wikipedia.org)
  • The deformations in shear zones are responsible for the development of characteristic fabrics and mineral assemblages reflecting the reigning pressure-temperature (pT) conditions, flow type, movement sense, and deformation history. (wikipedia.org)
  • Deformation and fracture in geophysics and geotechnology are also acceptable, particularly in relation to earthquake science and engineering. (iospress.com)
  • Recent research has been using the integrated geomechanics and seismic modelling to characterize tight-gas reservoirs, which requires knowledge of the joint or fracture compliances both on the geo-mechanic and seismic scale. (bris.ac.uk)
  • However, populating the geomechanical and/or seismic model with joint and fracture properties is based primarily on laboratory core data, which are on many times smaller length scales than observed in fractured reservoirs. (bris.ac.uk)
  • Since most reservoirs contain a mixture of fracture types and scales, no single approach (viscoelastic modeling, geomechanics, or discrete fracture network modeling) is sufficient to answer all questions. (doe.gov)
  • By integrating this modified core holder with a computed tomography scanner, we show a new methodology for understanding the interdependent behavior between fracture structure and flow properties during intermediate steps in shearing. (osti.gov)
  • The impact fracture behavior of a vapor grown carbon nanofiber (VGCNF) reinforced high-density polyethylene (PE) composite was evaluated. (hindawi.com)
  • The fracture behavior of these samples was analyzed using the essential work of fracture (EWF) approach. (hindawi.com)
  • Joëlle Riss , Sylvie Gentier & Deborah Hopkins , «Shear behavior of rock joints: prediction of damaged areas», Acta Stereologica [En ligne], Volume 17 (1998), Number 3 - Dec. 1998, 293-302 URL : https://popups.ulg.ac.be/0351-580x/index.php?id=276. (ac.be)
  • In 1949, Nicoll attempted to define stable versus unstable fractures using an anatomic classification. (medscape.com)
  • 1. Which patients with hemodynamically unstable pelvic fractures warrant early external mechanical stabilization? (east.org)
  • Unstable pelvic fractures typically occur as a result of high-energy injuries. (medscape.com)
  • Because most unstable and displaced pelvic ring fractures occur as the result of high-energy mechanisms, many patients present with associated primary organ system injuries. (medscape.com)
  • Some finger injuries (eg, angulated or unstable proximal phalanx fractures) require immobilization of the metacarpals and wrist with gutter splinting. (msdmanuals.com)
  • The steadily erupting water ice loads the flanks of the open fissure, causing bending in the surrounding elastic plate and further tensile failure in bands parallel to the first fracture-a process that may be unique to Enceladus, where the gravity is too weak for compressive stresses to prevent fracture propagation through the thin ice shell. (nature.com)
  • A method of simulating cold water injection induced damage due to both shear and tensile failures is needed in the geothermal industry. (psu.edu)
  • Tensile tests of these composites show a remarkable increase in elongation to failure with increased shear history and an apparently new mechanism of void stabilization permitting the formation of widespread stable subcritical voids in the deformed polymer [ 8 ]. (hindawi.com)
  • In order to explore the location of confined water from the fault to rock stratum caused by the tensile fracture of a fault during floor water inrush, floor water inrush is regarded as the result of the joint action of water pressure and mining stress. (mdpi.com)
  • Pelvic fractures historically have been treated nonoperatively. (medscape.com)
  • Other methods also used to treat pelvic fractures included closed reduction under general anesthesia, traction, spica casts, pelvic slings, and turnbuckles. (medscape.com)
  • Associated organ system injuries are observed commonly with pelvic fractures because of the energy imparted to the patient. (medscape.com)
  • Head, chest, and abdominal injuries frequently occur in association with pelvic fractures. (medscape.com)
  • Fractures of the extremities and spinal column also can occur in patients with pelvic fractures. (medscape.com)
  • Hemorrhage may accompany pelvic fractures. (medscape.com)
  • Most hemorrhage associated with pelvic fractures occurs as a result of bleeding from exposed fractures, soft-tissue injury, and local venous bleeding. (medscape.com)
  • The incidence of pelvic fractures in the United States has been estimated to be 37 cases per 100,000 person-years. (medscape.com)
  • The incidence of pelvic fractures is greatest in people aged 15-28 years. (medscape.com)
  • in persons older than 35 years, women sustain more pelvic fractures than men. (medscape.com)
  • [ 11 ] Most pelvic fractures that occur in younger patients result from high-energy mechanisms, whereas pelvic fractures sustained in the elderly population occur from minimal trauma, such as a low fall. (medscape.com)
  • Pelvic fractures occur after both low-energy and high-energy events. (medscape.com)
  • Low-energy pelvic fractures occur commonly in 2 distinct age groups: adolescents and the elderly. (medscape.com)
  • Low-energy pelvic fractures in the elderly frequently result from falls while ambulating, which are highlighted by stable fractures of the pelvic ring. (medscape.com)
  • High-energy pelvic fractures most commonly occur after motor vehicle crashes. (medscape.com)
  • Other mechanisms of high-energy pelvic fractures include motorcycle crashes, motor vehicles striking pedestrians, and falls. (medscape.com)
  • Strength, Fracture and Complexity: An International Journal is devoted to solving the problem of strength and fracture in a non-linear and systematic manner as a complexity system. (iospress.com)
  • It is known that matric suction can contribute to the shear strength of a soil. (rocscience.com)
  • The Unsaturated Shear Strength option in the Strength tab of the Material Properties dialog is only enabled if the Failure Criterion = Mohr-Coulomb in the Material Properties dialog. (rocscience.com)
  • By default, the Unsaturated Shear Strength Angle = 0. (rocscience.com)
  • This means that matric suction in the unsaturated zone, will not have any effect on the shear strength of a material. (rocscience.com)
  • The Unsaturated Shear Strength Angle is usually not a well known quantity. (rocscience.com)
  • To obtain an appreciation of its importance, a parametric study can be carried out, in which the Unsaturated Shear Strength Angle is varied between 0 and the Friction Angle of the material. (rocscience.com)
  • For matric suction greater than the air entry value, the unsaturated shear strength angle, Phi_b is used. (rocscience.com)
  • For example, we have developed methods for analysing the strength of two-phase shear zones .This work is supported by ARCCA (Advanced Research Computing at Cardiff). (cardiff.ac.uk)
  • To assess the influence of dental etching on the shear strength of different glass ionomer cements. (bvsalud.org)
  • The results revealed that pre-etching increased the shear strength of Riva glass ionomer cement (SDI) alone, whereas no statistically significant differences were found with regard to the other materials tested. (bvsalud.org)
  • Pre-etching with 10% polyacrylic acid for 30 s increased the shear strength of Riva glass ionomer cement. (bvsalud.org)
  • glass ionomer cement, shear strength, dentin. (bvsalud.org)
  • Shear bond strength tests are the method of choice in the assessment of restorative materials, especially traction and shear strength tests 9-10 . (bvsalud.org)
  • In 1949, Nicoll reported on 166 thoracolumbar fractures in coal miners and classified these injuries as anterior wedge fractures, lateral wedge fractures, fracture dislocations, and neural arch fractures. (medscape.com)
  • Dislocations and angulated fractures should be reduced before splinting. (msdmanuals.com)
  • This fracture of replacement of the lost dental structure in both anterior and can be corrected by the complete replacement of the fractured posterior teeth. (bvsalud.org)
  • By comparing numerical results of different models, the linear constitutive model for shear pins was verified to be accurate enough and suggested to simulate the effects of shear pin fractures in seismic isolation designs. (ktu.lt)
  • Because shear zones are found across a wide depth-range, a great variety of different rock types with their characteristic structures are associated with shear zones. (wikipedia.org)
  • Shear zones form a continuum of geological structures, ranging from brittle shear zones (or faults) via brittle-ductile shear zones (or semibrittle shear zones), ductile-brittle to ductile shear zones. (wikipedia.org)
  • Between these end-members, there are intermediate types of brittle-ductile (semibrittle) and ductile-brittle shear zones that can combine these geometric features in different proportions. (wikipedia.org)
  • In Scholz's model for a quartzo-feldspathic crust (with a geotherm taken from Southern California), the brittle-semibrittle transition starts at about 11 km depth with an ambient temperature of 300 °C. The underlying alternating zone then extends to roughly 16 km depth with a temperature of about 360 °C. Below approximately 16 km depth, only ductile shear zones are found. (wikipedia.org)
  • Shear zones are therefore very important structures for unravelling the history of a specific terrane. (wikipedia.org)
  • Striped gneisses are high-grade mylonites and occur at the very bottom of ductile shear zones. (wikipedia.org)
  • Schematic diagram of flow zones during fracture. (hindawi.com)
  • Intense vein networks formed in a narrow temperature range, corresponding to where the mineral chlorite dehydrates, in nominally viscous shear zones in the Damara Belt, Namibia. (cardiff.ac.uk)
  • Four deposit types were investigated: shear zones and fracture- related deposits, pegmatites, mineralized dikes, and placers. (cdc.gov)
  • Mineralized dikes contain most of the beryllium, columbium, tantalum, yttrium, zirconium, and ree resources, whereas shear zones and fracture-related deposits (Ross-Adams Mine) contain the principal uranium resource. (cdc.gov)
  • In this work we design and implement a discrete element method to study the physical system of two brittle surfaces as they are sheared across each other. (jyu.fi)
  • Viscoelastic and discrete fracture network modeling have also proven to be important to the overall methodology. (doe.gov)
  • This work investigates the influence of cohesion on aspects of fracture mode and propagation in 2D rounded cohesive granular packing. (iospress.com)
  • Each year, more than 150,000 persons in North America sustain fractures of the vertebral column. (medscape.com)
  • This article reviews the diagnosis and management of acute lumbar vertebral fractures. (medscape.com)
  • Failure modes included endplate fractures (classified into nine varieties), vertebral body fractures, and/or zygapophysial joint disruption. (cdc.gov)
  • Because the use of ceramics in electrical, chemical stability, do not absorb oral fluids, with rehabilitations is increasingly frequent, fractures have been minimal plaque retention in addition to longevity1,2. (bvsalud.org)
  • Here the shear zone is a wider zone, in which the ductile rock has slowly flowed to accommodate the relative motion of the rock walls on either side. (wikipedia.org)
  • In the recent years, the concept of EWF has been broadly applied to the evaluation of fracture toughness in ductile polymers and their composites due to its greater simplicity when compared to J-integral measurement [ 12 - 15 ]. (hindawi.com)
  • while many of these studies utilize measurements of fluid flow or the starting and ending geometries of the fracture to characterize shear, they do not characterize the intermediate stages during shear. (osti.gov)
  • Injuries to the thoracolumbar and lumbar spine constitute most of these fractures. (medscape.com)
  • Limiting factors to the appropriate care of dental fractures in the emergency department setting include lack of knowledgeable and willing on-call dental professionals 24 hours a day and a lack of knowledge, experience, and focused training of emergency physicians in the care of dental injuries. (medscape.com)
  • Ellis II: Injuries in this category are fractures that involve the enamel as well as the dentin layer. (medscape.com)
  • [ 2 , 3 ] A Korean study found that among the most common risk factors for tooth fracture are failure to wear a seatbelt in a motor vehicle, failure to wear a helmet while riding a motorcycle or bicycle, and injuries associated with the use of earphones and smartphones. (medscape.com)
  • In the upper crust, where rock is brittle, the shear zone takes the form of a fracture called a fault. (wikipedia.org)
  • This transition is not tied to a specific depth, but rather occurs over a certain depth range - the so-called alternating zone, where brittle fracturing and plastic flow coexist. (wikipedia.org)
  • The fracture of brittle materials is a fundamental problem in material physics. (jyu.fi)
  • As such, it would be ideal to measure and calibrate fracture compliance from field-scale measurements. (bris.ac.uk)
  • In this study, measurements of energy to fracture under impact using the method of essential work of fracture were made. (hindawi.com)
  • Measurements done in vertical wells using acoustic data are challenged by the limitation of not being able to directly record a horizontal shear. (onepetro.org)
  • Alternatively, reduce and stabilize the fracture through an anterolateral (Watson-Jones) approach . (aofoundation.org)
  • A temporary finger splint may be applied to stabilize an open fracture while awaiting operative intervention. (msdmanuals.com)
  • Initial attempts at spinal instrumentation used wire and screw fixation for spinal fractures and were first reported in the late 1800s. (medscape.com)
  • The aim of this project is to explore whether observations of seismic anisotropy from P-and S-waves can constrain fracture compliance (normal and shear). (bris.ac.uk)
  • However, constitutive models for seismic isolation bearings used in seismic isolation designs have not considered the effects of shear pin fractures. (ktu.lt)
  • In order to establish the constitutive model of seismic isolation bearings with shear pin fractures considered, shear fracture tests of shear pins were conducted, and a linear model and a bilinear model for shear pin fractures were established. (ktu.lt)
  • Instead, fracturing between the blocs will take place along fault lines that are geopolitically important. (chathamhouse.org)
  • Starting at the Earth's surface, the following rock types are usually encountered in a shear zone: uncohesive fault rocks. (wikipedia.org)
  • High accuracy, heavy duty shear box systems have been developed to examine fracture, fault and interfacial flow. (bgs.ac.uk)
  • Fracture reduction should start with a closed attempt. (aofoundation.org)
  • Guttman obtained reduction of spine fractures using traction and postural reduction, revolutionized nursing techniques, and introduced a comprehensive program of rehabilitation. (medscape.com)
  • In the 1930s, Watson Jones considered spinal fractures to be pure flexion fractures and treated them with hyperextension casts. (medscape.com)
  • The decision whether to perform surgery in the acute setting is made by the surgeon, depending on the stability of the fracture, the radiologic evidence of spinal cord or cauda equina compression, the patient's neurologic examination, and the overall status of the patient. (medscape.com)
  • Thirty-six human lumbar motion segments were fatigue tested using spinal compressive and shear loads that simulated lifting a 9-kg weight in three torso flexion angles (0, 22.5, and 45 deg). (cdc.gov)
  • These results suggest that prediction of failure modes (e.g., specific endplate fracture patterns) may be possible (at least for older specimens) given knowledge of the spinal loads along with certain characteristics of the lumbar spine. (cdc.gov)
  • The sliding allows for a controlled collapse of the fracture without lateral implant protrusion. (aofoundation.org)
  • Due to his left femur during a fall while climbing 2 stairs to enter the severity of the femoral fracture, the femoral head was our home. (cdc.gov)
  • As fracures usually open up against minimum stress, once the three stresses σ h , σ v and σ H are known, a comparison of the three stresses can predict the geometry of the induced fracture. (onepetro.org)
  • In this case, the comparison of stresses revealed that the induced fractures should have been vertical. (onepetro.org)
  • When solving the poro-elastic horizontal strain model for closure stress, using analogous Hooke's Law for continuous media, one needs to resolve a stiffness tensor which requires determination of multi-dimensional shear. (onepetro.org)
  • Subsequently, its capability for failure prediction is established by simulating the response of a double cantilever beam (DCB) under mode I type loading and compact shear specimen under mode II type loading. (arizona.edu)
  • Fracture surface morphology was also evaluated to determine changes in the fracture mechanism caused by nanofibers reinforcement. (hindawi.com)
  • The specimens were then viewed under a stereomicroscope at a magnification of x90 for analysis of fractures. (bvsalud.org)
  • Dental ceramics are indirect restorative materials, they parts can occur, and fracture is the main problem, which may have properties that mimic dental dentin and enamel. (bvsalud.org)
  • We present an experimental apparatus based on slight modifications to a commonly available Hassler core holder that allows for shearing of rocks, while measuring the hydraulic and mechanical changes to geomaterials during intermediate steps. (osti.gov)
  • In this study, we investigate the feasibility of using microseismic data to invert for fracture density, fracture strike and fracture compliance ratio from shear splitting results. (bris.ac.uk)
  • The hydraulic fracture geometry monitored using microseismic was available for comparison. (onepetro.org)
  • Madenci, E , Barut, A & Phan, N 2021, ' Bond-Based Peridynamics with Stretch and Rotation Kinematics for Opening and Shearing Modes of Fracture ', Journal of Peridynamics and Nonlocal Modeling , vol. 3, no. 3, pp. 211-254. (arizona.edu)
  • This limitation is typically overcome by modeling a horizontal shear using Stoneley mode firing. (onepetro.org)
  • With the acquisition of simultaneous horizontal and vertical well data in the study, complementary information from the horizontal well provides a unique opportunity to physically confirm the validity of horizontal shear determined in the Vertical well, thereby providing further confidence in the modeling technique. (onepetro.org)
  • When lamination is present induced fracture geometry is governed not only by stress but also by the frequency of lamination. (onepetro.org)
  • Fracture results from a number of sources - applied loading such as in the flexing of a beam and that due to punching on a slab, material shrinkage during curing of the concrete, and stress concentration related to structural geometry as in shear keys such as those in precast concrete bridge segments and from the reinforcing bar. (concrete.org)
  • In Ellis II and III fractures in which the dentin or pulp is exposed, the clinician caring for the tooth fracture in the acute setting must create a seal over these injured teeth to protect the pulp from intraoral flora and potential infection. (medscape.com)
  • Evaluation of the fracture surface morphology indicated that the fibril frequency and microvoid size within the various fiber loadings depended strongly on processing conditions. (hindawi.com)
  • Applying classical tools of mathematical morphology we analyse morphological features contributing to the roughness of the fracture. (ac.be)
  • English language citations were included for the period of 1999 through 2010 using the primary search strategy: pelvis, fracture hemorrhage, trauma, and retroperitoneal hematoma. (east.org)
  • Ellis III: These fractures involve the enamel, dentin, and pulp layers. (medscape.com)
  • This suggests that fracture may be an example of a complexity system. (iospress.com)
  • Maybe Casio just copied the old SH3 fx-9860GII power consumption figures for the newer SH4A version. (hpmuseum.org)
  • I purchased the fx-9860gii-2 (OS 2.09) to get to know a typical modern member of the CASIO family. (hpmuseum.org)
  • The Therafirm Sheer Ease Women's 30-40 mmHg Open Toe Compression Pantyhose features ultra stretchy yarns for a compression garment that is easier to put on. (compressionstockings.com)
  • Anteroposterior compression pelvic fracture with associated Denis zone II sacral fracture. (medscape.com)
  • Provides more leverage than a normal screwdriver and fits comb screws on all major shearing units. (premier1supplies.com)