Relevant bibliographies by topics / Pressure Patch

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Pressure Patch'

Author: Grafiati
Published: 5 June 2025
Last updated: 2 August 2025

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Journal articles on the topic "Pressure Patch"

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Liu, Shu-feng, Han-xiang Wang, Yan-xin Liu, Xin Zhang, Jia-qi Che, and Shao-hua Ma. "Analysis and experimental study of patch tube mechanical properties based on screen pipe hydroforming patch technology." AIP Advances 12, no. 5 (2022): 055301. http://dx.doi.org/10.1063/5.0087533.

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Hydroforming patch technology for damaged screen pipes is designed based on tube hydroforming technology, and the methods for determining the forming pressure range and forming defects are selected according to the forming process. The hydroforming patch model for screen pipes is established according to the technical demand parameters for screen pipe repair. From the mechanical properties of the material and digital–analog comparison analysis of the material formability, it is found that the determiners for formability (such as forming pressure, thinning rate, and springback) of 321 stainless
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Petrov, Evgeny, Paul R. Rohde, and Boris Martinac. "Flying-Patch Patch-Clamp Study of G22E-MscL Mutant under High Hydrostatic Pressure." Biophysical Journal 100, no. 7 (2011): 1635–41. http://dx.doi.org/10.1016/j.bpj.2011.02.016.

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Finn, Michael A., Nathan D. Faulkner, Scott J. Hetzel, and Paul A. Anderson. "Spinal duraplasty materials and hydrostasis: a biomechanical study." Journal of Neurosurgery: Spine 15, no. 4 (2011): 422–27. http://dx.doi.org/10.3171/2011.5.spine10851.

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Object Dural tears are a frequent complication of spinal surgery and contribute to significant morbidity. Occasionally, dural tears cannot be closed primarily and dural patch grafts must be utilized. No data exist on the comparative immediate hydrostatic strength of various patch materials used alone or with a biological adhesive in a spinal dural tear model. Thus, the authors conducted this study to determine the comparative effectiveness of various patch materials used with and without biological adhesive. Methods Twenty-four thoracic spines from calves were prepared with laminectomies and s
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Kronish, Jan W. "Pressure Patch Treatment for Congenital Upper Eyelid Eversion." Archives of Ophthalmology 109, no. 6 (1991): 767. http://dx.doi.org/10.1001/archopht.1991.01080060021009.

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Xu, Wenjie, Lei Lu, Yuxin He, Lin Cheng, and Aiping Liu. "Long-Term Detection of Glycemic Glucose/Hypoglycemia by Microfluidic Sweat Monitoring Patch." Biosensors 14, no. 6 (2024): 294. http://dx.doi.org/10.3390/bios14060294.

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A microfluidic sweat monitoring patch that collects human sweat for a long time is designed to achieve the effect of detecting the rise and fall of human sweat glucose over a long period of time by increasing the use time of a single patch. Five collection pools, four serpentine channels, and two different valves are provided. Among them, the three-dimensional valve has a large burst pressure as a balance between the internal and external air pressures of the patch. The bursting pressure of the two-dimensional diverter valve is smaller than that of the three-dimensional gas valve, and its role
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Balakina, Ekaterina V., Zahid A. Godzhaev, Alexander A. Konshin, and Mikhail S. Kochetov. "Calculation of normal stiffness and contact patch of ultra-low pressure tires for agricultural machinery." Tractors and Agricultural Machinery 90, no. 1 (2023): 49–58. http://dx.doi.org/10.17816/0321-4443-133657.

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BACKGROUND:The impact of tires on a deformable ground surface determines not only the ability of a vehicle to move, but also the pressure on ground through the contact patch geometric characteristics. The pressure on soil is normalized and limited by the conditions for the preservation of its agrophysical properties. Therefore, when creating vehicles for various purposes for their movement or movement of their trailers on deformable ground surfaces, it is required to calculate the pressure on ground in the design process. However, currently there are no universal dependencies for calculation o
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Sokabe, M., and F. Sachs. "The structure and dynamics of patch-clamped membranes: a study using differential interference contrast light microscopy." Journal of Cell Biology 111, no. 2 (1990): 599–606. http://dx.doi.org/10.1083/jcb.111.2.599.

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We have developed techniques for micromanipulation under high power video microscopy. We have used these to study the structure and motion of patch-clamped membranes when driven by pressure steps. Patch-clamped membranes do not consist of just a membrane, but rather a plug of membrane-covered cytoplasm. There are organelles and vesicles within the cytoplasm in the pipette tip of both cell-attached and excised patches. The cytoplasm is capable of active contraction normal to the plane of the membrane. With suction applied before seal formation, vesicles may be swept from the cell surface by she
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Овчарук, B. Ovcharuk, Криволап, and V. Krivolap. "METHODS OF DETERMINING THE AREA OF THE CONTACT PATCH OF THE TIRE IN DEPENDENCE ON PRESSURE AND LOAD." Alternative energy sources in the transport-technological complex: problems and prospects of rational use of 2, no. 2 (2015): 473–78. http://dx.doi.org/10.12737/19352.

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The article considers the methods and means of determining the area of the contact patch of the tire wheels to reduce the specific pressure of motor vehicles for the transport of heavy indivisible loads on the road by optimizing the area of the contact patch of the tire in dependence on pressure and load
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Wonglertnirant, Nanthida, S. Tipwichai, Praneet Opanasopit, Theerasak Rojanarata, Suwannee Panomsuk, and Tanasait Ngawhirunpat. "Development of Acrylic Matrix Type Ketoprofen Patch." Advanced Materials Research 506 (April 2012): 533–36. http://dx.doi.org/10.4028/www.scientific.net/amr.506.533.

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Ketoprofen transdermal patches (KTPs) were fabricated using an acrylic pressure sensitive adhesive (PSA) polymer. The influence of different factors (amount of PSA, drug content, and pressure applying on the backing membrane during preparation) on the characteristics of ketoprofen patch (thickness, W/A ratio, and adhesiveness of matrix film) and in vitro drug release behavior were investigated. The results revealed the successful fabrication and a good physical appearance of KTPs using acrylic PSA. Microscopic observations, FTIR spectra, and DSC thermograms were permitted to demonstrate that t
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Rusdiansaputra, Ferry, Edwin Danardono, and I. Gusti Bagus Adria Hariastawa. "The effect of free peritoneal patch on bursting pressure in primary gastric suturing with peritonitis conditions (study on New Zealand White rabbits)." Bali Medical Journal 12, no. 3 (2023): 3037–41. http://dx.doi.org/10.15562/bmj.v12i3.4741.

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Link of Video Abstract: https://youtu.be/L5cB4oIP45U Background: perforated peptic ulcer is still a challenge for surgeons and requires a strategy to provide a good outcome. Currently, research on protective biomaterials still has limitations. Free peritoneal patch has growth factors, is antimicrobial, and increases angiogenesis and progenitor properties, which is useful for wound healing. This study examines the healing of primary gastric suturing with peritoneal patches in peritonitis conditions by measuring bursting pressure. Methods: Researchers conducted an experimental study using 30 New
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Dissertations / Theses on the topic "Pressure Patch"

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Rusche, Max Thomas. "Structure of Turbulent Boundary Layers and Surface Pressure Fluctuations on a Patch of Large Roughness Elements." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/34773.

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Measurements were made in a zero pressure gradient turbulent boundary layer over two roughness patches containing hemispherical and cubical elements. The elements were 3 mm in height and spaced 16.5 mm apart in an array containing 7 streamwise rows and 6 spanwise columns for a total of 42 elements per patch. The boundary layer thickness was approximately 60 mm, so the ratio of element height to that thickness was a large amount at k= = 1=20. A three velocity component laser Doppler velocimeter measured instantaneous velocities. Mean flow and turbulence statistics were calculated as well veloci
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Palm, Sandra, and Hassan Saado. "Testbed Development for Non-invasive Intracranial Pressure Monitoring with a Microwave based Electromagnetic Skin Patch Sensor." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447838.

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Traumatic brain injuries (TBIs) are a major public health problem worldwide where the symptoms can be anything from mild concussion to severe swelling of the brain tissue. As a result of TBI the intracranial pressure (ICP) can elevate to pathological levels with severe consequences such as hypoxia, ischemia and brain hemorrhage. TBI and the subsequent ICP increase could hence lead to disability or in worst cases death. Therefore to understand the severity of a head injury and the path regarding further treatments, monitoring of a patient's ICP is crucial in the intensive care units (ICU) envir
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SMITH, KATHLEEN LOUISE. "GENES, ASSOCIATED WITH LEFT VENTRICULAR MASS, BODY SIZE, AND BLOOD PRESSURE IN YOUNG WOMEN." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1134400443.

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DHANORE, NISHANT. "Impact of Pressure Pulsations on Diesel Air Path Control and Compensation Measures." Thesis, KTH, Maskinkonstruktion (Avd.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-251023.

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Stricter pollution norms have led to increased efforts to achieve lower emissions. Exhaust Gas Re-circulation (EGR) is a well known measure to reduce NOx internally in the engine. In order to achieve better performance of an engine in terms of emissions it is very essential to control the flow of exhaust gases through EGR valve. Generally, an Engine Control Unit (ECU) uses mean value models or map-based approaches to calculate the mass flow through EGR valve. The main driving factor of the mass flow through an EGR valve i.e. the exhaust gas pressure is continuously fluctuating throughout an en
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Leonard, Fabien. "Study of stress corrosion cracking of alloy 600 in high temperature high pressure water." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/study-of-stress-corrosion-cracking-of-alloy-600-in-high-temperature-high-pressure-water(73edf35d-2bf4-42be-9816-b0746620dcf5).html.

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Stress corrosion cracking (SCC) of alloy 600 is regarded as one of the most important challenges to nuclear power plant operation worldwide. This study investigates two heats of alloy 600 (forged control rod drive mechanismnozzle and rolled divider plate) in order to obtain a better understanding of the effects of the material parameter on the SCC phenomenon. The experimental approach was designed to determine the effect of the manufacturing process (forged vs. rolled), the cold-work (as-received vs. cold-worked) and the strain path (monotonic vs. complex) on SCC of alloy 600. Specimens with d
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Cao, Wentao. "Metamorphic pressure-temperature paths of eclogites from The North-East Greenland Caledonides." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/2189.

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Exhumation of high-pressure and ultrahigh-pressure eclogites in large orogens and associated petrological change during the process remain enigmatic problems. This dissertation examines eclogites from high-pressure (HP) and ultrahigh-pressure (UHP) terranes in the North-East Greenland Eclogite Province, aiming to decipher their metamorphic pressure-temperature (P-T) paths, evaluate spatial variation of P-T paths, and understand petrological changes during the exhumation. Kyanite-bearing UHP eclogites from North-East Greenland contain a peak mineral assemblage of phengite, garnet, omphacite, ky
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Brune, Ryan Carl. "Effect of Geometrical Parameters on Pressure Distributions of Impulse Manufacturing Technologies." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1480616552913196.

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Yang, Zhijia. "Optimal air and fuel-path control of a diesel engine." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/16318.

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The work reported in this thesis explores innovative control structures and controller design for a heavy duty Caterpillar C6.6 diesel engine. The aim of the work is not only to demonstrate the optimisation of engine performance in terms of fuel consumption, NOx and soot emissions, but also to explore ways to reduce lengthy calibration time and its associated high costs. The test engine is equipped with high pressure exhaust gas recirculation (EGR) and a variable geometry turbocharger (VGT). Consequently, there are two principal inputs in the air-path: EGR valve position and VGT vane position.
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Xiao, Qiong. "The loading path dependence of sand constitutive behaviour and its relationship with pressure dip in sand piles." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/47037/.

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The subject of granular materials attracts substantial interests from both the academic and engineering communities. Their ubiquitous existences in nature and industries certify their engineering importance. Although relatively straightforward at the particle scale, the collective response of granular materials could be very complicated. The pressure dip under a sand pile is one among many intriguing phenomena that granular materials exhibit. It refers to a small dip in pressure appearing underneath the sand pile with the peak pressure observed away from the centre of the sand pile. Since firs
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More, Joshua N. "Algorithms and computer code for ab initio path integral molecular dynamics simulations." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:b8ca7471-21e3-4240-95b1-8775e5d6c08f.

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This thesis presents i-PI, a new path integral molecular dynamics code designed to capture nuclear quantum effects in ab initio electronic structure calculations of condensed phase systems. This software has an implementation of estimators used to calculate a wide range of static and dynamical properties and of state-of-the-art techniques used to increase the computational efficiency of path integral simulations. i-PI has been designed in a highly modular fashion, to ensure that it is as simple as possible to develop and implement new algorithms to keep up with the research frontier, and so th
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Books on the topic "Pressure Patch"

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United States. National Aeronautics and Space Administration., ed. Ceramic high pressure gas path seal. GE Aircraft Engines, 1987.

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Saravanamuttoo, H. I. H. Recommended practices for measurement of gas path pressures and temperatures for performance assessment of aircraft turbine engines and components. AGARD, 1990.

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North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Recommended practices for measurement of gas path pressures and temperatures for performance assessment of aircraft turbine engines and components. AGARD, 1990.

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Candido, Kenneth D., Teresa M. Kusper, Bora Dinc, and Nebojsa Nick Knezevic. Epidural Blood Patch. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190271787.003.0036.

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Post-dural-puncture headache (PDPH) is a consequence of neuraxial anesthesia, diagnostic lumbar puncture, intrathecal drug delivery systems, or any other technique involving dural trespass. The spinal headache results from a dural puncture that leads to cerebrospinal fluid (CSF) leakage from the subarachnoid space to the epidural space, culminating in intracranial hypotension and development of a low-pressure headache. A key element of PDPH is an increase in pain severity upon a change in position from supine to upright, which corresponds to a gravity-induced influence on CSF pressure dynamics
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Daley, Wilton M. Pressure Path. Outskirts Press, Incorporated, 2015.

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O’Neal, M. Angela. Ringing in the Ears and Pain in the Head. Edited by Angela O’Neal. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190609917.003.0015.

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The case illustrates the classic clinical features of a low-pressure headache. The pathophysiology results from the loss of cerebrospinal fluid (CSF). This causes sagging of the brain, stretching of the bridging veins, and venodilatation. The clinical history is of a headache that is worse in the upright position and remits when the patient is supine. Due to the connection of the perilymphatic fluid and CSF, postural tinnitus is a frequent symptom. Risk factors for low-pressure headache include those that are patient-specific: female sex, low body mass index, prior history of a low-pressure he
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Soltanzadeh, Sadjad. Problem-Solving Technologies. The Rowman & Littlefield Publishing Group, 2022. https://doi.org/10.5040/9798881814014.

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In our everyday activities we use material objects in different shapes and forms to solve various practical problems. We may use a knife to tighten a screw, turn an old washing machine drum into a fireplace, use the edge of a kitchen countertop to open a bottle, or place a hammer on the puncture patch glued to a bike’s inner tube to exert pressure on the patch until the glue dries. How should we identify these objects? What functions do they have? If we want to understand the role which material objects play in our everyday activities, we need to move away from universal identifications of obj
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Pressure Points: A Spiritual Path to Conquer Stress. 5th ed. Hitch Hiker Books, 2005.

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Blood Pressure Solution: The Path to Naturally Lower and Control Your Blood Pressure, Without Medication. CreateSpace Independent Publishing Platform, 2017.

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Bax, Leon. Find Your Flow: The Path to Thriving under Pressure. 2Mynds, Inc., 2023.

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Book chapters on the topic "Pressure Patch"

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Weinberger, Mario, J. Becker, and D. Schramm. "Tire contact patch pressure distribution model for the static parking maneuver." In Proceedings. Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-21194-3_95.

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Zavarise, G., and L. De Lorenzis. "The Contact Patch Test for Linear Contact Pressure Distributions in 2D Frictionless Contact." In Trends in Computational Contact Mechanics. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22167-5_5.

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Nakanishi, Ryota, Masami Matsubara, Takashi Ishibashi, Haruyuki Suzuki, Shozo Kawamura, and Daiki Tajiri. "Experimental Validation of Elliptical Contact Patch Tire Model Improved by Introducing Contact Pressure- and Slip Velocity-Dependent Friction Coefficient." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-66968-2_85.

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Bayram, Alper, and Antonino Marvuglia. "A Web-Based Dashboard for Estimating the Economic and Ecological Impacts of Land Use Class Changes for Key Land Patches." In Computational Science and Its Applications – ICCSA 2022 Workshops. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10545-6_20.

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AbstractThe increasing pressure on land coming from the raising needs of a fast-growing population puts public and private landowners and decision makers in front of difficult choices concerning the best use of limited land resources. On one hand, agricultural land and grassland need to be used to support human food requirements. On the other hand, these land uses create trade-offs with other ecosystem functions, assets and services, such as ecological connectivity, biodiversity and natural habitat maintenance. In this paper a prototype web-based dashboard is presented, that aims at allowing a
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Dobrocky, Tomas, and Àlex Rovira. "Problem Solving Disorders of CSF." In IDKD Springer Series. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-50675-8_2.

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AbstractSpontaneous Intracranial Hypotension (SIH)Spontaneous intracranial hypotension (SIH) is a debilitating medical condition, which is perpetuated by the continuous loss of cerebrospinal fluid (CSF) at the level of the spine, and is the top differential diagnosis for patients presenting with orthostatic headache. Neuroimaging plays a crucial role in the diagnostic work-up and monitoring SIH, as it provides objective data in the face of various clinical symptoms and very often a normal opening pressure on lumbar puncture. Brain MRI frequently demonstrates typical signs of CSF depletion and
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Zhao, Bo. "Impact of an Aging Population on Economic Growth: Pressure and Motivation." In Understanding China's Path to Modernization. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-7051-2_20.

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Kuczkowski, Łukasz, and Roman Śmierzchalski. "Selection Pressure in the Evolutionary Path Planning Problem." In Advances in Intelligent Systems and Computing. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-39881-0_44.

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Mo, Long, and Yuhong Wei. "Policy Recommendations for Finding a Strategic Equilibrium Between Pressure from Population Size and Pressure from Aging in China." In Research Series on the Chinese Dream and China’s Development Path. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-10-1491-8_9.

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Fet, Annik Magerholm, and Ottar Michelsen. "Environmental Management Systems." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_7.

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AbstractThis chapter gives an overview of the history of the development of environmental management systems (EMS) and the purpose of an EMS. It expands on the description of the different steps of an EMS under the model Plan-Do-Check-Act and clarifies the use of concepts within EMS. Companies are motivated by external pressure from stakeholders, national and international authorities, customers demanding greener products etc., as well as the ability to attract new employees and avoid negative publicity. Standards belonging to the ISO 14000-family for environmental management include both prod
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Fet, Annik Magerholm. "Analytical Frameworks, Impact Categories, Indicators and Performance Evaluation." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_8.

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AbstractThis chapter introduces the background for indicators to be used to monitor and communicate the environmental performance of different systems and activities. They are anchored in the DPSIR-analytical framework which stands for driving force, pressure, state, impact, and response. This framework is fundamental to our understanding the background for many of the tools and standards for analyzing, measuring, communicating, and reporting on environmental performance. DPSIR has been developed as a global model for understanding and analyzing the status of the Earth due to changes in enviro
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Conference papers on the topic "Pressure Patch"

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de Mello Joia, Carlos José Bandeira, Ricardo de Oliveira Carneval, Sérgio Damasceno Soares, Patricia Santos de Alcantara Bezerra, Cláudia de Azevedo, and Carlos M. Menendez. "Monitoring Hydrogen Damage in Pipelines and Pressure Vessels." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00469.

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Abstract This paper summarizes the development and use of a non-intrusive, field/plant patch-type probe for use in monitoring hydrogen flux in wet H2S piping, vessels and pipelines. It utilizes a Devanathan cell with a Ni layer on the external surface of the equipment. The use of the Ni-layer was found to be less expensive and easier to implement on-site than conventional Pd systems. Laboratory tests were conducted with the flux monitoring system in several wet H2S environments, including the standard NACE TM 0177 and TM 0284, to determine its response and to correlate its current output with
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Singbeil, Douglas, and Andrew Garner. "The Prevention of SCC in Pressure Vessels: a Test Method for Full-Thickness Weldments." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87186.

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Abstract An accelerated laboratory test method was developed to evaluate stress corrosion cracking (SCC) of kraft continuous digesters. The method uses circular patch test welds, made from 38 mm thick A516 Gr. 70 steel plate. The specimens were exposed to a 110 C solution containing 40 g/L NaOH and 20 g/L Na2S, at a controlled electrochemical potential. Several different welding procedures were evaluated for resistance to SCC, along with stress relief, shotpeening, sealed thermal spray coatings, and weld overlays of Inconel* 82 and 309L SS. Stress relief, shotpeening and sealed thermal spray c
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O’Donoghue, Mike, Ron Garrett, Jamie Garrett, et al. "Field Performance versus Laboratory Testing: A Study of Epoxy Tank and Vessel Linings Used in the Canadian Oil Patch." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03051.

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Abstract Epoxy coating technology for tank and vessel internals in the Alberta (Canada) oil patch has undergone significant developments in recent years. Innovative curing agents such as polycycloaliphatic polyamines are co-reacted with Bis A, Bis F and novolac epoxy resins to develop ever increasing temperature and pressure resistant coatings for service in sour crude and other harsh chemical environments. This paper attempts to explain the field performance of epoxy coatings with different epoxy resins and curing agents in light of their physical structure and laboratory data investigations.
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Nawar, Afra, Jesus Antonio Sanchez-Perez, Farhan N. Rahman, et al. "Capturing Physiological Correlates of Stress-Induced Blood Pressure Elevation Using a Multimodal Wearable Sensing Patch in Patients with a History of Myocardial Infarction*." In 2024 46th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2024. https://doi.org/10.1109/embc53108.2024.10781523.

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Hill, Davion, Narasi Sridhar, Robert Denzine, and Gary Snyder. "Mechanical Properties and Performance of Composite-Reinforced Steel Pipelines in Wet Environments with Cathodic Protection." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10037.

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Abstract Composites have seen increased usage for repair of pipelines. The performance of the entire metal-composite system has not been extensively addressed with regard to corrosion of the substrate and adhesion loss when the conditions are wet and the substrate is cathodically protected. In this work we have investigated the influence of corrosive environments on the performance of composite repair systems for pipelines. Earlier in this work we used FEA models to evaluate a composite patch for pipelines and the present research includes the experimental results for both patch and full-wrap
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de Luca, Camila, Julia Sathler, João Fellipe Souza, and Heraldo Mattos. "Fatigue Behavior of Metallic Pipes With Through-Wall Corrosion Damage Repaired With Bonded Metallic Patches." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21593.

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Abstract Composite repair systems have been gaining each time more space in industry, especially when it comes to repairing through-wall defects in pipes. They are simpler to apply, have no costly downtime and provide lower risks to the environment when compared to metallic repairs. ASME PCC-2 and ISO 24817 standards are responsible for defining the parameters necessary to a successful repair, however neither of them addresses a very common practice in such repairs, which is the addition of a bonded metallic patch over the defect. Several companies are adepts of such practice and it has alread
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Mazzeo, Joseph M. "How Potrero Utililized Flush Patches to Manage Localized Under Deposit Corrosion Damage in Waterwall Tubes." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28184.

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Flush Patch repair of boiler tubes, in which a circular section of tube is replaced to repair an isolated flaw, is typically considered to be a temporary repair. This paper reviews the successful flush patch repair program at the Potrero Power Plant in San Francisco. Over an 11-year period, a total of 294 flush patch repairs were utilized to repair isolated locations of under deposit corrosion in high flux areas of the water wall tubes. In this time period, three patches were replaced due to leaks found in hydro testing. Most of the repairs were performed in the early part of a decade when the
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Nadarajah, Chithranjan, and Guido L. Spinelli. "An Analytical Solution for Calculating Stresses on Lap Patches Used on Pipes and Pressure Vessels." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61050.

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Lap patch repairs are used regularly in petrochemical industries as temporary repairs for short term operations. In this paper a simple methodology is proposed on how to calculate the stresses on a lap patch using simple analytical approximation. The simple analytical results are compared with finite element results and they are found to be in reasonable agreement.
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Griffith, Jacob L., Andre' A. Wakim, Peer Moore-Jansen, and Kim Cluff. "Non-invasive biomedical patch sensor to measure intracranial pressure." In 2016 IEEE 13th International Conference on Wearable and Implantable Body Sensor Networks (BSN). IEEE, 2016. http://dx.doi.org/10.1109/bsn.2016.7516261.

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Jiang, Hao, and Haiying Huang. "Simultaneous shear and pressure sensing based on patch antenna." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Jerome P. Lynch. SPIE, 2015. http://dx.doi.org/10.1117/12.2084129.

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Reports on the topic "Pressure Patch"

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Keller, Michael W. DTPH56-14-H-CAP01 Patch and Full-Encirclement Repairs for Through-Wall Defects. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0012087.

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The objective of the research presented in this report was to investigate the performance of patch-type composite repairs on pressure vessels with through-wall defects. The most common repair geometry for bonded composites is the full-encirclement repair where the repair is formed by installing a composite that completely encircles the damaged substrate. These repairs are straightforward to install and have proven to have good field performance through a variety of industry and academic-sponsored research projects. When the substrate vessel becomes large, then these encirclement repairs begin
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Bruce. L52273 Internal Repair of Pipelines. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0010287.

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External, corrosion-caused loss of wall thickness is the most common cause of repair for gas transmission pipelines. To prevent an area of corrosion damage from causing a pipeline to rupture, the area containing the corrosion damage must be reinforced. Since corrosion is a time dependent process, as pipelines become older, more repairs are required. Repair methods that can be applied from the inside of a gas transmission pipeline (i.e., trenchless methods) are an attractive alternative to conventional repair methods since pipeline excavation is precluded. This is particularly true for pipeline
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Leis and Francini. L51832 Line Pipe Resistance to Outside Force. Pipeline Research Council International, Inc. (PRCI), 1999. http://dx.doi.org/10.55274/r0010143.

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These reports present the results of a project whose objective was the development of a "patch"� to the PRCI ductile flaw growth model (DFGM), so that this successful technology could be extended to include mechanical damage. The ultimate goal is a criterion to assess damage severity based solely on field-measurable inputs and nominal information about the pipeline. It is anticipated that such a criterion will lead to cost-effective, timely action to ensure safety and serviceability of high-pressure transmission pipelines, as continuing use of in-line inspection tools makes it increasingly pos
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Leis and Mohan. L51803 Failure Criterion for Stress-Corrosion Cracking in Pipelines. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0010327.

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Failures due to stress-corrosion cracking (SCC) generally involve several adjacent, parallel, deep cracks that because of their proximity coalesce to form long flaws, which can cause ruptures.Recent studies indicate that such multiple flaws cause a local increase in compliance as compared to a single crack that represents the largest of the cracks involved.This means that the failure pressure for such a group of cracks can be poorly represented by a single flaw failure criterion, such as the Pipe Axial Flaw Failure Criterion (PAFFC) developed for the Pipeline Research Council International, In
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Shim, D. J., Gery Wilkowski, Mohammed Uddin, Sureshkumar Kalyanam, and P. Mincer. PR-276-094509-R01 Develop Fracture Initiation Criteria for High-Strength Steel Line Pipe Phase II. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010072.

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This report summarizes the major findings from a PRCI Project on developing fracture initiation criteria for axial flaws (both through-wall and surface flaws) in high-strength line-pipe materials. This work was originally done on the basis to see if improvements were needed for higher-grade steels, but interestingly there were several outcomes that affect predictions for all piping steels. One of the outcomes of this work is a new correlation between Charpy USE and J-R curve for high-strength materials. Although it is based on limited data, it was demonstrated that there is significant differe
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Kyriakides. L51559 Factors Affecting Pipe Collapse Phase II. Pipeline Research Council International, Inc. (PRCI), 1988. http://dx.doi.org/10.55274/r0010129.

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Offshore pipelines installed in moderate to deep water depths (1,500 ft. and beyond) must, by necessity, be designed to withstand ambient external pressure. Improper design can lead to catastrophic collapse of large sections of the structure. During the installation process the line can experience significant bending and tension loads in addition to external pressure. These additional loads can significantly reduce the collapse pressure of the pipe. Special purpose combined loading test facilities were designed and built in which pressures equivalent to 10,000 ft. and beyond were simulated. Th
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Burgess, J. L., M. Brown, and C. R. van Staal. Pressure-temperature conditions and a p-t path for the Port aux Basques area, southwest Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/134270.

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Bodie, Mark, Michael Parker, Alexander Stott, and Bruce Elder. Snow-covered obstacles’ effect on vehicle mobility. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/38839.

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The Mobility in Complex Environments project used unmanned aerial systems (UAS) to identify obstacles and to provide path planning in forward operational locations. The UAS were equipped with remote-sensing devices, such as photogrammetry and lidar, to identify obstacles. The path-planning algorithms incorporated the detected obstacles to then identify the fastest and safest vehicle routes. Future algorithms should incorporate vehicle characteristics as each type of vehicle will perform differently over a given obstacle, resulting in distinctive optimal paths. This study explored the effect of
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Kinikles, Dellena, and John McCartney. Hyperbolic Hydro-mechanical Model for Seismic Compression Prediction of Unsaturated Soils in the Funicular Regime. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2022. http://dx.doi.org/10.55461/yunw7668.

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A semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC) during undrained cyclic shearing. Using a flow rule derived from energy considerations, the evolution in plastic volumetric strain (seismic compression) was predicted from the plastic shear strains of the hysteretic hyperbolic stress-strain curve. The plastic volumetric strains are used to predict the changes in degree of saturation from phase relationships
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Lee, Wall, and Worsley. PR-398-113719-R01 Technologies for Monitoring Erosion Corrosion and Direct Inspection of Subsea Assets. Pipeline Research Council International, Inc. (PRCI), 2014. http://dx.doi.org/10.55274/r0010570.

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This Final Report prepared by ESR Technology Ltd., provides the results of a study on subsea pipeline erosion and corrosion monitoring. The report is therefore split into two parts. The first part deals with monitoring erosion and corrosion, subsea; and the second part is on direct inspection techniques to monitor wall thickness loss. Generally, Subsea equipment is significantly more difficult to inspect than topside or land-based equipment and the study recognizes that many challenges and technology gaps remain. Sand, produced from oil and gas wells, can cause erosion and erosion/corrosion of
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