Academic literature on the topic 'Hydraulic activation'

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Journal articles on the topic "Hydraulic activation"

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Bao, Xuewei, and David W. Eaton. "Fault activation by hydraulic fracturing in western Canada." Science 354, no. 6318 (November 17, 2016): 1406–9. http://dx.doi.org/10.1126/science.aag2583.

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Newton, Christopher R., Brian Curran, and Gregory P. Victorino. "Angiotensin II type 1 receptor activation increases microvascular hydraulic permeability." Surgery 136, no. 5 (November 2004): 1054–60. http://dx.doi.org/10.1016/j.surg.2004.04.031.

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Toner, M., E. G. Cravalho, and M. D. Cosman. "The hydraulic conductivity and the activation energy of bovine embryos." Cryobiology 23, no. 6 (December 1986): 548–49. http://dx.doi.org/10.1016/0011-2240(86)90078-7.

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Luke, Adam, Brad Kaplan, Jeff Neal, Jeremiah Lant, Brett Sanders, Paul Bates, and Doug Alsdorf. "Hydraulic modeling of the 2011 New Madrid Floodway activation: a case study on floodway activation controls." Natural Hazards 77, no. 3 (March 8, 2015): 1863–87. http://dx.doi.org/10.1007/s11069-015-1680-3.

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Eyre, Thomas S., David W. Eaton, Megan Zecevic, David D’Amico, and Danylo Kolos. "Microseismicity reveals fault activation before Mw 4.1 hydraulic-fracturing induced earthquake." Geophysical Journal International 218, no. 1 (April 8, 2019): 534–46. http://dx.doi.org/10.1093/gji/ggz168.

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Aggarwal, Shanti J., Kenneth R. Diller, and Charles R. Baxter. "Hydraulic permeability and activation energy of human keratinocytes at subzero temperatures." Cryobiology 25, no. 3 (June 1988): 203–11. http://dx.doi.org/10.1016/0011-2240(88)90027-2.

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Gong, Chen Chen, Xiao Bo Yan, De Li Lou, and Dong Xu Li. "Influence on Activation Property of Coal Gangue by Calcining Temperature." Applied Mechanics and Materials 174-177 (May 2012): 1137–40. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1137.

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Influence on activation property of coal gangue by calcining temperature was discussed. The experimental results show that C12A7 and C2S with hydraulic-activity are created in coal gangue calcined at 900 - 950°C which has reasonable pore distribution after hydrating.
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Lopez, Jennifer Contreras, Lothar Lauterböck, and Birgit Glasmacher. "Determination of the membrane hydraulic permeability of MSCs." Current Directions in Biomedical Engineering 2, no. 1 (September 1, 2016): 323–27. http://dx.doi.org/10.1515/cdbme-2016-0072.

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AbstractA successful cryopreservation is based on knowledge of the optimal cooling rate. So far, this is often determined by way of complex parameter studies. Alternatively, the identification of cell specific characteristics, such as osmotic behaviour, membrane hydraulic permeability and activation energy could be used to calculate the optimal cooling rate. These parameters should be determined for supra-zero and sub-zero temperatures. In this study cryomicroscopy was used. Mesenchymal stromal cells (MSCs) from bone marrow were analysed. The determined membrane hydraulic permeability for sub-zero temperatures is significantly lower than that for supra-zero temperatures. On the contrary the activation energy is significantly higher in the presence of ice. The addition of a cryoprotective agent (CPA) such as dimethyl sulfoxid (DMSO) shows an additional influence on the characteristics of the membrane of the cell. The optimal cooling rate was determined with these parameters. For cryopreservation without DMSO the optimal cooling rate was found to be 12.82 K/min. If the MSCs were frozen with 5% (v/v) DMSO the optimal cooling rate is 16.25 K/min.
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Wei, Rui Li. "New Research Progress in Activation of Steel Slag Activity." Advanced Materials Research 1030-1032 (September 2014): 125–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.125.

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Steel slag has potential hydraulic reactivity, it can replace raw material for making cement clinker, or directly product slag cement as admixture, but there is a problem that it has a lower activity as the admixture to produce slag cement. The reasons for lower activity of steel slag and motivation of steel slag activity were discussed in detail.
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Chong, Zhaohui, Xuehua Li, and Xiangyu Chen. "Effect of Injection Site on Fault Activation and Seismicity during Hydraulic Fracturing." Energies 10, no. 10 (October 16, 2017): 1619. http://dx.doi.org/10.3390/en10101619.

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Dissertations / Theses on the topic "Hydraulic activation"

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Staněk, Theodor. "Vztah parametrů přípravy belitického cementu a jeho hydraulických vlastností." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-233286.

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The dissertation thesis is devoted to the study of belite clinkers and to the possibilities of the increase in their hydraulic activity. The mechanism and the kinetics of belite clinker formation were studied together with the relation of the velocity of these processes and the hydraulic activity of clinker. The influence of various parameters (degree of lime saturation, duration and temperature of burning) of the belite clinker preparation on the belite clinker development in time, on belite polymorphism, on the chemical composition of belite crystals and on the belite cement hydraulic activity was studied, too. The research methods used for the investigation involved electron microscopy, optical microscopy, X-ray diffraction analysis, high-temperature microphotometry and calorimetry. The resulting clinkers were hydraulically activated by addition of calcium sulfate. The experiments have proven that the higher rate of belite formation does not lead to the increase of its hydraulic activity, as opposed to that of alite. On the other hand, the chemical activation by sulfate anions enables to prepare clinker with relatively higher degree of lime saturation with minor admixture of alite and anhydrite, which is hydraulically activated. The work was concluded by experimental burning of belite clinker doped with sulfate anions in a model rotary kiln and by the preparation of cements blended with common industrial alite clinker. The results indicate the possibility of separate industrial production of special belite clinker alongside with common alite clinker and the production of economically and environmentally beneficial blended Portland cements with suitable technological parameters, or targeted production of special cements with properties corresponding to their required utilization.
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Book chapters on the topic "Hydraulic activation"

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Stentoft, Kirsten, Hanne Erichsen, and Michael Hauschild. "Danfoss: Electro-hydraulic Activation Units." In Environmental Assessment of Products, 481–514. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-6367-9_30.

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"Activation of Hydraulic Properties of the Compound CaO.2AI2O3." In Calcium Aluminate Cements, 388–93. CRC Press, 1990. http://dx.doi.org/10.1201/9781482288872-40.

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Hernando Aramburo Varela, Carlos, Luiz Felipe de Pinho, César Pedrajas Nieto-Márquez, and Rafael Talero Morales. "Activated Clays and Their Potential in the Cement Industry." In Clay and Clay Minerals [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99461.

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The thermal activation of clays to produce highly reactive artificial pozzolans on a large scale is one of the most important technologies developed on an industrial scale to reduce CO2 emissions in cement manufacture. This technical document deals with the scientific basis for the thermal activation of clays to produce an extraordinarily high quality supplementary cementitious material (SCM) based on the contents of its hydraulic factors, reactive silica (SiO2r–) and reactive alumina (Al2O3r–). The production process and the optimization of its use in the new cements offers better performance, features and durability. Furthermore, its mixture with Portland cement is much more appropriate when carried out in a blending station after both components, activated clay and Portland cement, are ground separately and not jointly in a single mill.
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Ganesan, Vinothkumar. "The Role of Renin Angiotensin Aldosterone System in the Progression of Cognitive Dysfunction in Chronic Kidney Disease Patients with Alzheimer’s Disease." In Renin-Angiotensin Aldosterone System [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96048.

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Renin angiotensin aldosterone (RAAS) is very well established as a regulator of blood pressure (BP) and a determinant of target organ injury. It controls fluid and electrolyte balance through coordinated effects on the heart, blood vessels, and kidneys. The main effector of RAAS is angiotensin II (Ang II), which exerts its vasoconstrictor effect primarily on the postglomerular arterioles, thereby raising the glomerular hydraulic pressure and ultrafiltration of plasma proteins, which may lead to the initiation and progression of chronic kidney disease (CKD). RAAS also plays a, key role in hypertension and cerebrovascular disease. Enhanced Ang II levels accelerate the initiation and progression of cell senescence by fostering inflammation and oxidative stress. Sustained activation of RAAS facilitates aging-related CKD and results in cognitive dysfunction and Alzheimer’s disease (AD). However, in many hypertension treatment studies, the frequency of fatal and nonfatal stroke has been greatly reduced, and this is very important since a history of stroke doubles the risk of dementia in both patients without CKD and hemodialysis. In CKD patients with AD, anemia has also been identified as a risk factor for cognitive impairment, and correction of anemia with recombinant erythropoietin treatment has been shown to enhance cognition measures, such as AD markers and neuropsychological tests.
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Conference papers on the topic "Hydraulic activation"

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C. Maxwell, S., M. Jones, R. Parker, S. Leaney, M. Mack, D. Dorvall, D. D‘Amico, J. Logel, E. Anderson, and K. Hammermaster. "Fault Activation During Hydraulic Fracturing." In 72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010. European Association of Geoscientists & Engineers, 2010. http://dx.doi.org/10.3997/2214-4609.201400770.

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Maxwell, S. C., M. Jones, R. Parker, S. Miong, S. Leaney, D. Dorval, D. D'Amico, J. Logel, E. Anderson, and K. Hammermaster. "Fault activation during hydraulic fracturing." In SEG Technical Program Expanded Abstracts 2009. Society of Exploration Geophysicists, 2009. http://dx.doi.org/10.1190/1.3255145.

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Eaton, D. "Dynamics of Fault Activation by Hydraulic Fracturing in Overpressured Shales." In 79th EAGE Conference and Exhibition 2017 - Workshops. Netherlands: EAGE Publications BV, 2017. http://dx.doi.org/10.3997/2214-4609.201701672.

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Park, Jaeyoung, Jihoon Kim, and Ding Zhu. "Assessment of Potential Fault Activation in Tarim Basin During Hydraulic Fracturing Operations by Using Rigorous Simulation of Coupled Flow and Geomechanics." In SPE Asia Pacific Hydraulic Fracturing Conference. Society of Petroleum Engineers, 2016. http://dx.doi.org/10.2118/181811-ms.

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Baig, Adam, Ted Urbancic, and Gisela Viegas. "Role of Fluid Injection on Fault Activation During Hydraulic Fracture Stimulations." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2016. http://dx.doi.org/10.2118/181698-ms.

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Chuprakov, Dimitry, and Romain Prioul. "Hydraulic Fracture Height Containment by Weak Horizontal Interfaces." In SPE Hydraulic Fracturing Technology Conference. SPE, 2015. http://dx.doi.org/10.2118/spe-173337-ms.

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Abstract Weak formation bedding planes create a unique mechanism for hydraulic fracture height containment. They arrest the vertical growth of hydraulic fracture. The propagation across them may or may not occur. To quantify this fracture behavior, first we developed an analytical model of the elastic T-shaped fracture contact with frictional and cohesional interfaces. The model evaluates the fracture blunting and the shear activation of the interfaces. It predicts the buildup of the net pressure necessary for the fracture to cross the given interface. Next we conduct numerical simulations of the 3D fracture propagation in a formation with closely spaced horizontal interfaces. These simulations manifest intermittent and decelerated fracture growth in height, especially with low-viscosity fracturing fluids. This mechanism of fracture height containment is independent of the multilayer stress-contrast mechanism used conventionally. Combined with the stress mechanism, the fracture height containment model could alleviate the problem of height growth overestimation in some fracturing simulation cases.
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Grob, M., and S. Maxwell. "Geomechanics of Fault Activation and Induced Seismicity during Multi-stage Hydraulic Fracturing." In Unconventional Resources Technology Conference. Tulsa, OK, USA: American Association of Petroleum Geologists, 2016. http://dx.doi.org/10.15530/urtec-2016-2461190.

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Zhang*, Fengshou, and Shawn Maxwell. "Geomechanical Modeling of Fault Activation and Induced Seismicity during Hydraulic Fracturing Flowback." In 2017 Workshop: Microseismic Technologies and Applications, Hefei, China, 4-6 June 2017. Society of Exploration Geophysicists, 2017. http://dx.doi.org/10.1190/microseismic2017-010.

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Hui, Gang, Shengnan Chen, and Fei Gu. "A Novel Coupled Approach to Investigate the Spatiotemporal Evolution of Fracturing-Induced Seismicity: Case Study." In SPE Hydraulic Fracturing Technology Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/204156-ms.

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Abstract The recent seismicity rate increase in Fox Creek is believed to be linked to the hydraulic fracturing operations near the region. However, the spatiotemporal evolution of hydraulic fracturing-induced seismicity is not well understood. Here, a coupled approach of geology, geomechanics, and hydrology is proposed to characterize the spatiotemporal evolution of hydraulic fracturing-induced seismicity. The seismogenic faults in the vicinity of stimulated wells are derived from the focal mechanisms of mainshock event and lineament features of induced events. In addition, the propagation of hydraulic fractures is simulated by using the PKN model, in combination with inferred fault, to characterize the possible well-fault hydrological communication. The original stress state of inferred fault is determined based on the geomechanics analysis. Based on the poroelasticity theory, the coupled flow-geomechanics simulation is finally conducted to quantitatively understand the fluid diffusion and poroelastic stress perturbation in response to hydraulic fracturing. A case study of a moment-magnitude-3.4 earthquake near Fox Creek is utilized to demonstrate the applicability of the coupled approach. It is shown that hydraulic fractures propagated along NE45° and connected with one North-south trending fault, causing the activation of fault and triggered the large magnitude event during fracturing operations. The barrier property of inferred fault under the strike-slip faulting regime constrains the nucleation position of induced seismicity within the injection layer. The combined changes of pore pressure and poroelastic stress caused the inferred fault to move towards the failure state and triggered the earthquake swarms. The associated spatiotemporal changes of Coulomb Failure Stress along the fault plane is well in line with the spatiotemporal pattern of induced seismicity in the studied case. Risks of seismic hazards could be reduced by decreasing fracturing job size during fracturing stimulations.
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Wessels, Scott, Michael Kratz, and Alejandro De La Pena. "Identifying fault activation during hydraulic stimulation in the Barnett shale: Source mechanisms,bvalues, and energy release analyses of microseismicity." In SEG Technical Program Expanded Abstracts 2011. Society of Exploration Geophysicists, 2011. http://dx.doi.org/10.1190/1.3627478.

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