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Relevant bibliographies by topics / Pressure

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Academic literature on the topic 'Pressure'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 September 2024

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Journal articles on the topic "Pressure"

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Dinamarco, Nelson, Grazia Maria Guerra, Frida Liane Plavnik, Luis Cuadrado Martin, and Luiz Aparecido Bortolotto. "MELHORANDO O CONTROLE DA PRESSÃO ARTERIAL COM A ADOÇÃO DA AUTOMEDIÇÃO DA PRESSÃO ARTERIAL– AMPA." Revista Brasileira de Hipertensão 29, no. 2 (June 1, 2022): 34–36. http://dx.doi.org/10.47870/1519-7522/2022290234-6.

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Blood Pressure Self-Measurement (BPSM) has gained interest lately and its practice can contribute to the diagnosis and follow-up of arterial hypertension. In Brazil, due to difficulties in carrying out Home Blood Pressure Monitoring (HBPM) and the unavailability of Ambulatory Blood Pressure Monitoring (ABPM) in most facilities, AMPA, which differs from the aforementioned methods, has widespread use in our country. Therefore, it seems important to discuss this method, which is largely used and poorly studied. In this paper, we will describe the methods for measuring blood pressure, auscultatory and oscillometric, in addition to listing the advantages and disadvantages of measuring blood pressure in the office, comparing them with AMPA. We will also make an alert about the need for the patient to receive guidance on blood pressure measurement and, finally, we will cite the Brazilian and European Guidelines regarding the mention they make about this method.

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DS, Dr Rajeev. "Peripheral Venous Pressure: An Alternative to Central Venous Pressure?" Journal of Medical Science And clinical Research 05, no. 04 (April 27, 2017): 20685–91. http://dx.doi.org/10.18535/jmscr/v5i4.154.

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Ruth, P. J. van, R. R. Hillis, and R. E. Swarbrick. "DETECTING OVERPRESSURE USING POROSITY-BASED TECHNIQUES IN THE CARNARVON BASIN, AUSTRALIA." APPEA Journal 42, no. 1 (2002): 559. http://dx.doi.org/10.1071/aj01032.

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Overpressure has been encountered in many wells drilled in the Carnarvon Basin. Sonic logs are used to estimate pore pressure in shales in the Carnarvon Basin using the Eaton and equivalent depth methods of estimating pore pressure from velocity data with reference to a normal compaction trend. The crux of pore pressure estimation from the sonic log lies in the determination of the normal compaction trend, i.e. the acoustic travel time (Δt)/depth (z) trend for normally pressured sediments. The normal compaction trend for shales in the Carnarvon Basin was established by fitting an Athy-type exponential relationship to edited sonic log data, and is: Δt = 225 + 391exp(-0.00103z) Vertical stress estimates are also needed for the Eaton and equivalent depth methods used herein. A vertical stress (σv) relationship was obtained by fitting a regression line to vertical stress estimates from the density log, and is: σv = 0.0131 z1.0642 The Eaton and equivalent depth methods yield similar pressure estimates. However, the equivalent depth method can only be applied over a limited range of acoustic travel times, a limitation that does not apply to the Eaton method. The pressure estimates from the Eaton method were compared to pressures measured by direct pressure tests in adjacent permeable units. There is a good correlation between Eaton and test pressures in normally pressured intervals in three wells and overpressured intervals in two wells. Eaton pressure estimates underestimate overpressured direct pressure measurements in four wells by up to 13 MPa. This is consistent with overpressure being generated (at least in part) by a fluid expansion mechanism or lateral transfer of overpressure. The Eaton pressures in one well are, on average, 11 MPa lower than hydrostatic pore pressure recorded in direct pressure measurements below the Muderong Shale. The sediments in this well appear to be overcompacted due to exhumation. Mud weights can be used as a proxy for pore pressure in shales where direct pressure measurements are not available in the adjacent sandstones. The Eaton pressure estimates are consistent with mud weight in the Gearle Siltstone and Muderong Shale in 4 of the 8 wells studied. The Eaton pressures are on average 10 Mpa in excess of mud weight in the Muderong Shale and Gearle Siltstone in three wells. It is unclear whether the predicted Eaton pressures in these three wells accurately reflect pore pressure (i.e. the mud weights do not accurately reflect pore pressure), or whether they are influenced by changes in shale mineralogy (because the gamma ray filter does not differentiate between shale mineralogy).

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Sellamuthu, Hariraj. "Is the Work Pressure Accelerating Blood Pressure? A Cross-Sectional Study in a Pressure Cooker Manufacturing Industry." Journal of Advanced Research in Medicine 10, no. 04 (December 30, 2023): 14–17. http://dx.doi.org/10.24321/2349.7181.202310.

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M.B, Pushpa, and Varsha Vijay AKhade A.V. "Study of Intraocular Pressure (IOP) Changes in Relation Blood Pressure." International Physiology 5, no. 2 (2017): 107–9. http://dx.doi.org/10.21088/ip.2347.1506.5217.12.

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John, Ajesh, Ashutosh Kumar, Karthikeyan G., and Pankaj Gupta. "An integrated pore-pressure model and its application to hydrocarbon exploration: A case study from the Mahanadi Basin, east coast of India." Interpretation 2, no. 1 (February 1, 2014): SB17—SB26. http://dx.doi.org/10.1190/int-2013-0078.1.

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An integrated pore-pressure modeling approach was adopted to understand the basin architecture from a pressure perspective and its inference toward possible hydrocarbon occurrence. Kriging-based 3D pore-pressure modeling was used with offset well data and seismic velocities to establish the pressure stratigraphy of the northeast coast (NEC) field (southern part) in the Mahanadi Basin. Late Pliocene sediment is moderately pressured ([Formula: see text]), whereas early Pliocene sediment is normally pressured ([Formula: see text]) and compacted, representing a regional seal for this part of the basin. Miocene represents the onset window for major undercompaction and associated high pressures ([Formula: see text]) in conformance with the regional pressure trend. Overpressure distribution and its mechanisms in the late Miocene level across the NEC field shows distinct patterns with highly elevated pressures ([Formula: see text]) in the northern part resulting from a hybrid unloading mechanism, whereas moderate to high pressure ([Formula: see text]) toward the southern part is associated with undercompaction. Regional pressure correlation across the study area suggests a pressure dependent habitat of hydrocarbons in the Miocene and late Pliocene levels. Pressure distribution and an excess pressure pattern within the Miocene stratigraphy shows a regression trend from north to south, possibly indicating a preferred subsurface fluid flow direction, which is supported by high-quality gas reservoirs discovered in the southern part of the study area. A similar but reverse pressure regression trend is observed within the late Pliocene stratigraphy, which is also validated by the presence of gas reservoirs in the northern part of the study area. Major hydrocarbon reservoirs in the Miocene and Pliocene stratigraphy from the southern part of study area exhibit a strong correlation with effective stress distribution. High-quality gas reservoirs are mostly associated with high effective stress ([Formula: see text]), whereas a high probability for reservoirs to be water wet are observed below this threshold value.

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Varan, Nilufer Yildiz. "Wireless pressure sensors for pressure garments treated with chitosan." International Journal of Clothing Science and Technology 29, no. 5 (September 4, 2017): 732–42. http://dx.doi.org/10.1108/ijcst-12-2016-0136.

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Purpose The purpose of this paper is to analyze the effects of chitosan treatments on exerted pressures of nylon 6.6/elastane pressure garments in three different knit structures using wireless pressure sensors for an accurate and a precise scar management for future designs. Design/methodology/approach Pressure garments designed in different structures consist of 70/30 and 75/25 nylon 6.6/elastane were treated with chitosan and the exerted pressures were analyzed using wireless pressure sensors including ultra-thin and flexible printed circuit sensors in comparison with untreated control samples. Antimicrobial activities and washing tests were also evaluated. Findings It is found that chitosan treatments have a significant effect on final pressures. Exerted pressures increased significantly for all samples after chitosan treatments. Higher pressures were measured for weft knit structured designs while lower pressures were recorded for powernet structured garments. It is found that the elasticity showed a small significant decrease and it has attributed due to a small significant shrinkage during processes. The mean scores of pressures were found in the acceptable medical range which will continue to help hypertrophic scar management for future designs. The exerted pressures of the fabrics remained constant after five washes and showed a small significant decrease after 10 and 50 washes which will provide a long period of compression. Permanent antimicrobial effectiveness has gained at around 90 percent after five washes and 50 percent after 50 washes. A small significant increase was observed for stiffness (CD, MD) after ten washes. Originality/value Chitosan treatments impact exerted pressures of pressure garments significantly. It is a reference to evaluate pressure functions of pressure garments using wireless pressure sensors while imparting antimicrobial activity.

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Wheeler, Abigail, Shanti Farrington, Fay Sweeting, Amy Brown, and Andrew Mayers. "Perceived Pressures and Mental Health of Breastfeeding Mothers: A Qualitative Descriptive Study." Healthcare 12, no. 17 (September 8, 2024): 1794. http://dx.doi.org/10.3390/healthcare12171794.

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When a mother is supported to breastfeed, the benefits for her mental health are significant. However, if pressured or unsupported, the opposite is true. This research examines mothers’ breastfeeding experiences, exploring how perceived pressure can impact perinatal mental health. A sample of 501 respondents to a research questionnaire was explored using Reflexive Thematic Analysis. Three main themes identified were perceived pressure to breastfeed, perceived pressure not to breastfeed and mental health impact. The main findings were that mothers received conflicting advice from healthcare professionals, and pressures to feed in a certain way came from their support networks, as well as from their internal beliefs. Perceived pressures negatively impacted maternal mental health, while positive breastfeeding experiences benefitted mental health outcomes.

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Rajkumar, R. Vinodh. "DIASTOLIC BLOOD PRESSURE OR ACTUALLY IT IS BASELINE SYSTOLIC BLOOD PRESSURE?" International Journal of Physiotherapy and Research 3, no. 4 (August 11, 2015): 1126–32. http://dx.doi.org/10.16965/ijpr.2015.155.

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Pickering, L. A., and G. J. lndelicato. "Abnormal Formation Pressure: A Review." Mountain Geologist 22, no. 2 (April 1, 1985): 78–89. http://dx.doi.org/10.31582/rmag.mg.22.2.78.

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Abnormal formation pressure is defined as any pressure that deviates from the normal hydrostatic gradient. In order for these pressures to form and be preserved, a near-seal is required. The seal is not necessarily impermeable but may be a low permeability formation, such as shale, or a fault-related barrier. The possible causes of abnormal formation pressure are: 1) compaction of sediments, 2) tectonic activities, 3) temperature changes, 4) osmosis, 5) diagenesis, 6) methane generation, and 7) buoyancy. Temperature changes due to decay, diagenesis, and changes in burial depth of the formation are one of the two most important causes of abnormal formation pressure. The other important cause is compaction pressure related to the weight of overburden with increased depth of burial. If the pore fluids cannot escape, they will support a greater proportion of the total overburden stress and become abnormally highly pressured. Tectonic activities such as faulting as well as removal of overburden by erosion also play an important role in either raising or lowering pore fluid pressure. Osmosis, diagenesis, methane generation, and buoyancy are all additive to the overall effects of pressure and temperature.

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Dissertations / Theses on the topic "Pressure"

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Lim, C. S. "Plastic limit pressures for pressure vessels with defects at openings." Thesis, Cardiff University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234339.

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Totland, Johan Fredrik Holm. "Fast Pressure Control in Managed Pressure Drilling." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26110.

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In drilling operations, it is of great importance to efficiently and safely control the pressure in the well. To avoid possible damage to the reservoir, equipment, personnel and the environment, the pressure in the well bore must be kept within certain limits, determined by the formations around the well. An emerging drilling technique, intended to increase the efficiency and safety of drilling operations, is known as Managed Pressure Drilling (MPD). MPD differs from conventional drilling by closing the mud system with a controlled choke, often in combination with a backpressure pump to ensure circulation through the choke. The controller objective is to automatically adjust the choke to reach the desired downhole pressure. For optimal control of the downhole pressure, a model describing the flows and pressures in the well is necessary. A modal discretization method is considered and implemented in this thesis, resulting in a rational approximation of a two-dimensional distributed parameter model. The discretized model is used to design a LQG controller, for comparison with a PI controller. Both controllers are implemented in MATLAB to perform computer simulations and experiments in lab. Simulations indicated that the transient response of the LQG stabilized at the desired set-point, more efficiently relative to PI controller. This difference was significantly improved when increasing the length of the simulated well. In experiments performed on a tailor made experimental lab located at NTNU, the performance of the two controllers were about equally great. It is discussed whether the lab is inadequate to demonstrate possible improvements due to the introduction of the two-dimensional model.

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Ng, Wai Nyin. "Pressure changing steps in pressure swing adsorption." Thesis, University of Bath, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296582.

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Brear, Michael John. "Pressure surface separations in low pressure turbines." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620981.

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Holmes, James Wright. "Optical surface pressure measurement using pressure sensitive paint." Thesis, University of Southampton, 2000. https://eprints.soton.ac.uk/47083/.

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Bowling, Micah. "Intraoral Pressure and Sound Pressure During Woodwind Performance." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849677/.

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For woodwind and brass performers, intraoral pressure is the measure of force exerted on the surface area of the oral cavity by the air transmitted from the lungs. This pressure is the combined effect of the volume of air forced into the oral cavity by the breathing apparatus and the resistance of the embouchure, reed opening, and instrument’s back pressure. Recent research by Michael Adduci shows that intraoral pressures during oboe performance can exceed capabilities for corresponding increases in sound output, suggesting a potentially hazardous situation for the development of soft tissue disorders in the throat and velopharyngeal insufficiencies. However, considering that oboe back pressure is perhaps the highest among the woodwind instruments, this problem may or may not occur in other woodwinds. There has been no research of this type for the other woodwind instruments. My study was completed to expand the current research by comparing intraoral pressure (IOP) and sound pressure when performing with a characteristic tone on oboe, clarinet, flute, bassoon, and saxophone. The expected results should show that, as sound pressure levels increase, intraoral pressure will also increase. The subjects, undergraduate and graduate music majors at the University of North Texas, performed a series of musical tasks on bassoon, clarinet, flute, oboe, and alto saxophone. The musical tasks cover the standard ranges of each instrument, differences between vibrato and straight-tone, and a variety of musical dynamics. The data was collected and examined for trends. The specific aims of this study are to (1) determine whether there is a correlation between IOP and sound pressure, (2) shed light on how well each instrument responds to rapid fluctuation, and (3) determine which instruments are most efficient when converting air pressure into sound output. Results of this study raised concerns shared by previous studies – that woodwind players are potentially causing harm to their oropharynx by inaccurately perceiving intraoral pressure needed to achieve a characteristic sound. Evidence found by this study suggests that while oboists generate high intraoral pressure for relatively little sound output (a fact corroborated by past studies), the same cannot be said for all of the woodwind instruments, particularly the flute.

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Crescenzo, Domenico. "Pressure measurement in the high pressure fuel system." Thesis, KTH, Förbränningsmotorteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-267549.

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In order to meet the demanding legislations on diesel engines exhaust emissions, an always more accurate control over the amount of fuel injected in the cylinders is required. A comprehensive understanding of the main factors involved in the injection process, therefore, should be achieved. Such factors are the pressure in the common rail, the injection ontime and the temperature at the injector. The rail pressure, in particular, has been the focus of this project: Its accurate acquisition is crucial for the correct determination of the injection duration and, consequently, for an improved control over the amount of fuel injected. The rail pressure, however, is characterized by significant instabilities affecting the measurement. An experimental campaign has been conducted on a Scania D13 engine in order to characterize and understand the rail pressure signature during engine steady operations: The superposition of injections, pump strokes and water-hammer instabilities forms a complex pattern extensively discussed. An attempt to model the pressure fast transients has been made: While the frequency content of the phenomenon investigated is correctly interpreted, the results obtained in the time domain diverge significantly in amplitude and phase from the experimental data collected. Finally, the measurement strategy adopted today at Scania CV AB to acquire the rail pressure has been investigated and its accuracy assessed. On the basis of the knowledge achieved, a new adaptive measurement technique, capable of changing the estimation process accordingly to the engine operating condition detected, is proposed. The potentiality of an increased accuracy in controlling the amount of fuel injected is proved for engine steady operations. Further investigation regarding the method tolerance to engine transients, however, is required.

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Brewin, Ross, and ross brewin@rmit edu au. "Mediating Pressure, Facilitating Exchange: 3 Architectural Projects in Pressured Urban Environments." RMIT University. Architecture and Design, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080215.154127.

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The aim of the research is to demonstrate architectural design strategies and outcomes that provide alternative ways of considering the futures of areas under high developmental pressure. These areas are where the potential detrimental effects of unmediated, rapid change and development are at their most immediate and in need of consideration. Urban environments are complex physical manifestations of economic, environmental, social, cultural and political pressures represented by the often competing desires of public and private interest groups. Given the enormity of scale and complexity of these pressures, it is problematic to think of architecture as something that can design everything (perhaps as seen in traditional master planning) and in doing so, solve the problem. What may be more constructive is the consideration of architecture having the potential to be involved strategically in these issues, over a number of scales to work towards positive outcomes for the public domain. In recent years, both Victorian and Queensland state governments have released policy guiding the future growth of key regions within their borders. Each attempts to address accommodating large population increases over relatively short time periods by proposing consolidation in and around existing urban centres. This consolidation is seen as part of a strategy to limit urban sprawl and curtail its associated negative social, environmental and potential economic impacts. These targeted 'Activity Centres' become places of immanent transformation, points of pressure within the disaggregated field of the contemporary Australian city. Left un-mediated, developmental pressure in locations such as these is likely to create the same detrimental physical and social effects evident in the general prevailing homogeneity, commercialisation and piecemeal nature of current urban development. Through several architectural design projects, the research aims to explore the role of architecture as an urban mediator within these pressured locations. Through bridging scales from the broad metropolitan, to the finer grained specific, this mediation may begin to strategically 'set things up' for the public domain, towards facilitating valuable social exchange.

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Quin, David John Gilbert. "Bridging the pressure gap : taking surface science to more realistic pressures." Thesis, University of Southampton, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484956.

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Traditional surface science experiments are conducted under ultra high vacuum conditions, this enables surface cleanliness to be strictly controlled and the use of electron based measurements, to determine surface structure and composition. Unfortunately, lftlV conditions are very different from those in real world catalysis (e.g. car exhaust clean-up) and only limited insight can be obtained from such studies. For example, it has been found that certain catalytic species do not exist under UHV conditions. It is an essential step in the progression of surface science to move to more realistic conditions whilst still retaining the simplicity enabled by a UHV cleaned, ideal surface such as a single crystal. this thesis the development of two new pieces of equipment, which bridge this gap, at the SRS at Daresbury Laboratory are presented. The High Pressure Reaction Cell (HPRC), based on the far-IR beamline 13.3 at Daresbury laboratory, enables samples to be cleaned under lJHV conditions before being exposed to pressures, inside the cell, of up to 200 mbar of a chosen gas, without compromising the external vacuum. Far-IR RAIRS, which is useful for adsorbate investigations, is unaffected by the presence of a partial pressure of gas, enabling in-situ measurements as well as postexperiment UHV measurements. Results are presented for investigations into the high pressure oxidation and reduction copper, these are supported by DFT calculations ofthe phonon modes for common copper oxides. The High Ambient Pressure Photoelectron spectroscopY (H.APPY) system is a peripatetic end station designed to allow sample cleaning in UHV, before performing in-situ photoelectron spectroscopy at pressures up to 10-2 mbar. The commissioning experiments in which a commercial supported catalyst was studied are presented. The future of these two newly developed pieces of equipment is discussed alongside the future offar-IR RAIRS as a whole.

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Falkirk, Isabella. "Under Pressure." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20701.

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Under pressure is an expression of stress. It is about work becoming everything. It is about not being able to separate your self from your work. It is about carrying the office with you all the time.The result is a well kept together collection of garments ranging from commercial to experimental on the edge of not being wearable.
Program: Modedesignutbildningen

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Books on the topic "Pressure"

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Authority, Health Education, ed. High blood pressure, hypertension, pressure. London: Health Education Authority, 1998.

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Ross, C. T. F. Pressure vessels: External pressure technology. 2nd ed. Cambridge, UK: Woodhead Publishing, 2011.

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Eremets, M. I. High pressure experimental methods. Oxford: Oxford University, 1996.

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D, Hochheimer Hans, and North Atlantic Treaty Organization. Scientific Affairs Division., eds. Frontiers of high pressure research II: Application of high pressure to low-dimensional novel electronic materials. Dordrecht: Kluwer Academic Publishers, 2001.

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Watts, Duncan. Pressure groups. Edinburgh: Edinburgh University Press, 2007.

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Honore, Carl. Under Pressure. New York: HarperCollins, 2008.

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Schneider, Jen, Steve Schwarze, Peter K. Bsumek, and Jennifer Peeples. Under Pressure. London: Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1057/978-1-137-53315-9.

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Jamelle, Hina. Under Pressure. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003038375.

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Pijls, Nico H. J., and Bernard De Bruyne. Coronary Pressure. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-015-8834-8.

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Pijls, Nico H. J., and Bernard De Bruyne. Coronary Pressure. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9564-3.

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Book chapters on the topic "Pressure"

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Hanzak, Elaine A., Diana Lynn Barnes, and Judith Ellis. "Pressure, pressure." In Eyes Without Sparkle, 62–67. London: Routledge, 2021. http://dx.doi.org/10.4324/9781846196621-10.

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Decher, Reiner. "Pressure, Pressure, It’s All About Pressure!" In The Vortex and The Jet, 49–64. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8028-1_6.

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AbstractThe airplane or wing designer seeks to harness the pressure forces associated with the motion of air. These have important consequences for the operation of an airplane in flight because the forces on it must be balanced and flight should be stable. We examine the various descriptive pressures that are relevant and look at airfoil and wing data that is displayed as clean and compact. We introduce yet another consequence of the nature of vorticity associated with lift, namely drag that is associated with the trailing vortex system. The discussion is concluded with thoughts about how the pilot of an airplane thinks about speed.

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Keighley, H. J. P., F. R. McKim, A. Clark, and M. J. Harrison. "Pressure." In Mastering Physics, 12–23. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-86062-3_2.

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Keaton, Jeffrey R. "Pressure." In Selective Neck Dissection for Oral Cancer, 1–2. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-12127-7_230-1.

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Keighley, H. J. P., F. R. McKim, A. Clark, and M. J. Harrison. "Pressure." In Mastering Physics, 12–23. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-08849-2_2.

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Kibble, R. "Pressure." In Making Use of Physics for GCSE, 81–91. London: Macmillan Education UK, 1989. http://dx.doi.org/10.1007/978-1-349-10328-7_9.

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Hickman, Ray, and Martin Caon. "Pressure." In Nursing Science, 233–65. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-15188-2_10.

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Rusoke-Dierich, Olaf. "Pressure." In Diving Medicine, 43–45. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73836-9_7.

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Blackburn, James A. "Pressure." In Modern Instrumentation for Scientists and Engineers, 195–207. New York, NY: Springer New York, 2001. http://dx.doi.org/10.1007/978-1-4613-0103-5_13.

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Gooch, Jan W. "Pressure." In Encyclopedic Dictionary of Polymers, 586. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9412.

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Conference papers on the topic "Pressure"

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Kettenbeil, Christian, Zev Lovinger, Suraj Ravindran, M. Mello, and G. Ravichandran. "Pressure-shear plate impact experiments at very high pressures." In SHOCK COMPRESSION OF CONDENSED MATTER - 2019: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP Publishing, 2020. http://dx.doi.org/10.1063/12.0001099.

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Biteau, J. J., M. O. Spencer, B. Benazet, and C. Longis. "Origin of Abnormal Pressures, Hydrodynamism and Pore Pressure Prediction." In 76th EAGE Conference and Exhibition - Workshops. Netherlands: EAGE Publications BV, 2014. http://dx.doi.org/10.3997/2214-4609.20140597.

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Montgomery, M. E., J. P. Sattler, and Sharon Buffington. "Using BOPs at Pressures in Excess of the Rated Working Pressure-A Solution for High-Pressure Wells?" In Offshore Technology Conference. Offshore Technology Conference, 2007. http://dx.doi.org/10.4043/18614-ms.

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Charoensuk, Kritchanan, Thunyaseth Sethaput, and Itthisek Nilkhamhang. "Electrical Modeling of Dynamical Interaction among Intracranial Pressure, Intraocular Pressure, Cerebral Perfusion Pressure, and Arterial Blood Pressure." In 2019 12th Biomedical Engineering International Conference (BMEiCON). IEEE, 2019. http://dx.doi.org/10.1109/bmeicon47515.2019.8990274.

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Onur, M., C. Ayan, and F. J. Kuchuk. "Pressure-Pressure Deconvolution Analysis of Multiwell Interference and Interval Pressure Transient Tests." In IPTC 2009: International Petroleum Technology Conference. European Association of Geoscientists & Engineers, 2009. http://dx.doi.org/10.3997/2214-4609-pdb.151.iptc13394.

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6

Siew, Calvin, and Tiku T. Tanyimboh. "Pressure-Dependent EPANET Extension: Pressure-Dependent Demands." In 12th Annual Conference on Water Distribution Systems Analysis (WDSA). Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41203(425)9.

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Ilin, Andrew V., Jose D. Brana, Sayamik N. Ameen Rostami, and Thomas H. Koithan. "Pressure Losses Calibration in Managed Pressure Drilling." In Offshore Technology Conference. Offshore Technology Conference, 2020. http://dx.doi.org/10.4043/30758-ms.

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Damani, Shishir, Erik Braaten, Máté Szoke, William N. Alexander, William J. Devenport, N. Agastya Balantrapu, Benjamin P. Pearce, Timothy A. Starkey, Alastair P. Hibbins, and J. Roy Sambles. "Resonator-based Pressure Sensor for Wall Pressure." In 28th AIAA/CEAS Aeroacoustics 2022 Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2022. http://dx.doi.org/10.2514/6.2022-2956.

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Virgin, Chris A., Bruce F. Carroll, Louis N. Cattafesta, Kirk S. Schanze, and Mohammet E. Kose. "Pressure Sensitive Paint for Acoustic Pressure Fluctuations." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81831.

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Full-field luminescent pressure sensors are commonly referred to as Pressure Sensitive Paint (PSP). In this paper, the suitability of PSP for the detection of acoustic pressure fluctuations is evaluated. Single point measurements utilizing a photomultiplier tube are performed in an acoustic plane wave tube capable of generating pressure levels up to 164 dB SPL for frequencies from 500 to 2100 Hz. The PSP coating employed is platinum meso-tetra(pentafluorophenyl) porphrine [PtTFPP] in poly(tBS-co-TFEM). Comparisons between a 1/4″ Bru¨el & Kjær type 4138 condenser microphone and the PSP detection system are used to evaluate the PSP system in both the time and frequency domains. The frequency response and linearity of the optical system is established and the high frequency attenuation is characterized. Experimental characterization indicates a dc sensitivity of 5.68 μV/Pa, a noise floor of 127 dB SPL and a frequency response of −2.5 dB/octave and a 45° phase delay. PSP shows the ability to avoid saturation and nonlinearities at higher sound pressure levels.

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Ojah, M. G., E. S. Adewole, and E. Emumena. "Pressures and Pressure Derivatives of Vertical and Horizontal Wells Located Within Intersecting Sealing Fault and Constant Pressure Boundary." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/217103-ms.

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Abstract The optimization of the performance of oil and gas wells (whether vertical or directional) as well as well location from external reservoir boundaries or faults has been a major concern of the reservoir engineer over the years. This work presents an accurate method for evaluating the performance of both the vertical and horizontal wells each located within an intersecting sealing/no-flow boundary and a constant-pressure boundary. The main aim of this study was to investigate the transient pressure behaviour of a vertical well as well as a horizontal well located within an intersecting sealing fault and a constant pressure boundary. The methods employed in computing the dimensionless pressures and dimensionless pressure derivatives for both well types include the method of images and principle of superposition. The computations were also made using Microsoft Excel, Python and MATLAB software. The results obtained show that for the selected parameters; 1) the models give accurate estimation of distances between active and image wells, PD and PD’, 2) at 30 hours of production, both wells completely overcome the effects of the boundaries at 2000 ft. equidistant to faults, 3) for the infinite-acting reservoir, a characteristic values of PD’ for the vertical and horizontal wells are 0.5 and 0.2 respectively, 4) for both well types, the effect of the upper boundary is greatly felt between distances of 5.00ft. and 10.00 ft., and beyond this region, the effect of the lower boundary becomes gradually felt and then, greatly felt beyond 15.00 ft. The relationship between the pressures and unequal faults distances has no maximum or minimum points, 5) the point with the least effect of either or both boundaries as well as longest transient period is point 3 (equal distance of 15.00 ft. from both boundaries). This is the point of optimal productivity, 6) for a given distance, both PD and PD’ decrease as horizontal well length L increases, 7) for all the cases considered and dimensionless time tD, both PD and PD’ decrease with increasing horizontal well length. The longer the well length, the lower the drawdown required to give same effects, as would shorter lengths, on the well performance at a given time of production thereby prolonging production over time, and 8) for a given distance, the horizontal well length has no impact on the flow periods. The type curves can be used for matching of actual pressure drawdown data and determining the drainage area and relative well location with respect to physical boundaries. Worthy of future research are similar works on; 1) anisotropic reservoir, 2) larger values of faults distances, and 3) angles other than basic angles.

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Reports on the topic "Pressure"

1

VAN KATWIJK, C. Rosemount absolute pressure transmitter - MCO pressure. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/782346.

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VAN KATWIJK, C. Rosemount pressure indicator/transmitter - SCHe bottle pressure. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/782350.

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VAN KATWIJK, C. Reotemp pressure indicator - local pressure indication to monitor the SCHe supply bottle pressure. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/782352.

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VAN KATWIJK, C. Reotemp Pressure Indicator Local Pressure Indication to Monitor the SCHE Supply Bottle Pressure. Office of Scientific and Technical Information (OSTI), July 1999. http://dx.doi.org/10.2172/804249.

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Baker, Richard, Jay Kniep, Pingjiao Hao, Chi Cheng Chan, Vincent Nguyen, Ivy Huang, Karl Amo, et al. Low-pressure. Office of Scientific and Technical Information (OSTI), January 2015. http://dx.doi.org/10.2172/1170206.

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VAN KATWIJK, C. Reotemp pressure indicator, local indication of MCO pressure. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/782344.

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Rucinski, Russell A. High Pressure Back up Air Piping Pressure Test. Office of Scientific and Technical Information (OSTI), March 2002. http://dx.doi.org/10.2172/1033666.

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Guppy, Babur, and Remezani. L51555 Estimation of Average Reservoir Pressure in Underground Storage Reservoirs. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 1988. http://dx.doi.org/10.55274/r0011302.

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The objective of this study was to examine different methods available for estimating the average reservoir pressure of an underground storage reservoir and to determine the relative accuracy of each technique under varying conditions. Three techniques were reviewed, including a new procedure developed as a part of this research project. Approach 1: Shutting-in all wells and monitoring several wells or one representative well upstructure after a selected length of time. Either the arithmetic or weighted average of the final pressure for all the wells is used to determine the average reservoir pressure. Approach 2: Pressure build-up analysis was performed on several wells and the average reservoir pressure for that drainage area was determined from the Horner plots. The average reservoir pressure for the entire reservoir was found by computing the weighted average of average drainage pressures for the individual wells. Approach 3: All data collected from Approach 2 was combined into one composite Horner plot from which the average reservoir pressure could be determined.

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VAN KATWIJK, C. Ashcroft pressure switch - monitor for low SCHe purge pressure. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/782353.

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VAN KATWIJK, C. Ashcroft Pressure Switch Monitor for Low SCHe Purge Pressure. Office of Scientific and Technical Information (OSTI), June 2000. http://dx.doi.org/10.2172/803959.

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