Academic literature on the topic 'Pressure induced volume expansion (PIE)'

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Journal articles on the topic "Pressure induced volume expansion (PIE)"

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Knight, Sarah, Harold Snellen, Michael Humphreys, and Chris Baylis. "Increased renal phosphodiesterase-5 activity mediates the blunted natriuretic response to ANP in the pregnant rat." American Journal of Physiology-Renal Physiology 292, no. 2 (2007): F655—F659. http://dx.doi.org/10.1152/ajprenal.00309.2006.

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Normal rat pregnancy is characterized by plasma volume expansion due to renal sodium retention and is associated with a blunted response to natriuretic stimuli, such as atrial natriuretic peptide (ANP). ANP signals via cGMP, and phosphodiesterases (PDE) inactivate cGMP and terminate the natriuretic response. We previously reported that increased medullary PDE-5 activity occurs in rat pregnancy, which may be the mechanism of the blunted natriuretic effect of ANP. Here, we used anesthetized 16-day pregnant and virgin rats to investigate whether intrarenal infusion of a selective PDE-5 inhibitor,
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Lee, Yongjae, Thomas Vogt, Joseph A. Hriljac, John B. Parise, and Gilberto Artioli. "Pressure-Induced Volume Expansion of Zeolites in the Natrolite Family." Journal of the American Chemical Society 124, no. 19 (2002): 5466–75. http://dx.doi.org/10.1021/ja0255960.

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Patel, Kaushik P., and Pamela K. Carmines. "Renal interstitial hydrostatic pressure and sodium excretion during acute volume expansion in diabetic rats." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 281, no. 1 (2001): R239—R245. http://dx.doi.org/10.1152/ajpregu.2001.281.1.r239.

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Experiments were performed to test the hypothesis that the renal interstitial hydrostatic pressure (RIHP) response to acute volume expansion is suppressed in diabetes mellitus. Sprague-Dawley rats received streptozotocin (STZ rats; 65 mg/kg ip) or vehicle (Sham rats). Two weeks later, RIHP and Na+ excretion responses to acute graded volume expansion with isotonic saline were quantified under Inactin anesthesia (0.1 mg/kg ip). In Sham rats, acute graded volume expansion to 10% body wt produced increases in RIHP (Δ = 12.2 ± 2.4 mmHg), urine flow (Δ = 54 ± 8 μl · min−1 · g−1), and Na+ excretion (
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Swift, Dale M., and Robert A. Solomon. "Unruptured aneurysms and postoperative volume expansion." Journal of Neurosurgery 77, no. 6 (1992): 908–10. http://dx.doi.org/10.3171/jns.1992.77.6.0908.

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✓ After a ruptured aneurysm has been clipped in patients with multiple aneurysms, the question often arises whether to use volume expansion and/or hypertensive treatment to prevent delayed cerebral ischemia (vasospasm). There is understandable concern regarding the possible rupture of unprotected aneurysms under additional hemodynamic stress. In a series of 199 patients with aneurysmal subarachnoid hemorrhage who underwent early surgery, 31 were left with one or more unprotected aneurysms postoperatively. All patients were treated with prophylactic volume expansion based on a previously report
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Marasinghe, G. K., W. J. James, P. C. Ezekwenna, et al. "Pressure induced reversal of the volume expansion caused by interstitial nitrogen in Nd2Fe17N3." Journal of Applied Physics 83, no. 11 (1998): 6911–13. http://dx.doi.org/10.1063/1.367908.

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Andersen, Jens Lundbæk, Lars Juel Andersen, Niels C. F. Sandgaard, and Peter Bie. "Volume expansion natriuresis during servo control of systemic blood pressure in conscious dogs." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 278, no. 1 (2000): R19—R27. http://dx.doi.org/10.1152/ajpregu.2000.278.1.r19.

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.—The importance of arterial blood pressure (BP) and ANG II for the renal natriuretic response (NaEx) to volume expansion (3.5% body wt) was investigated during converting enzyme blockade (enalaprilate, 2 mg/kg). In separate experiments, BP was clamped either 30 mmHg above or a few millimeters mercury below baseline by servo-controlled infusion of ANG II or sodium nitroprusside, respectively, so that volume expansion did not change BP. Enalapril decreased BP by 8 mmHg. Without clamping, volume expansion returned BP to that of preenalapril control and increased NaEx 10-fold (40 ± 10 to 377 ± 69
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Hasebe, N., L. Hittinger, S. Kohin, Y. T. Shen, R. M. Graham, and S. F. Vatner. "Effects of hypertrophy on left atrial and ventricular compliance and plasma ANF levels in conscious dogs." American Journal of Physiology-Heart and Circulatory Physiology 268, no. 2 (1995): H781—H787. http://dx.doi.org/10.1152/ajpheart.1995.268.2.h781.

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Alterations in left atrial (LA) and left ventricular (LV) compliance and arterial and coronary sinus atrial natriuretic factor (ANF) concentrations at baseline and in response to both volume depletion and expansion were investigated in 15 conscious dogs with aortic banding-induced LV hypertrophy (LVH) (LV/body wt increased by 64%), which also induced LAH (LA/body wt increased by 61%). With volume expansion coronary sinus ANF increased more (P < 0.05) in dogs with LVH (+427 +/- 88 pg/ml) compared with control dogs (+146 +/- 45 pg/ml). Arterial ANF levels also rose more with volume expansion
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Gillen, C. M., T. Nishiyasu, G. Langhans, C. Weseman, G. W. Mack, and E. R. Nadel. "Cardiovascular and renal function during exercise-induced blood volume expansion in men." Journal of Applied Physiology 76, no. 6 (1994): 2602–10. http://dx.doi.org/10.1152/jappl.1994.76.6.2602.

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To test the hypothesis that reduced baroreflex sensitivity is a direct result of exercise, we measured forearm vascular conductance (FVC) responses to graded lower body negative pressure (LBNP) 2, 20, and 44 h after intense exercise. Eight 4-min bouts of exercise at 85% of maximum oxygen uptake produced 3.5 +/- 0.7 and 3.9 +/- 1.0% blood volume (BV) expansions at 20 and 44 h of recovery, respectively. BV was unchanged from control values 2 h after exercise. The reduction in FVC was significantly less than control values during 30 and 40 mmHg of LBNP at 2 and 20 h of recovery, respectively, whe
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Albinsson, Sebastian, Yulia Shakirova, Anna Rippe, et al. "Arterial remodeling and plasma volume expansion in caveolin-1-deficient mice." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 293, no. 3 (2007): R1222—R1231. http://dx.doi.org/10.1152/ajpregu.00092.2007.

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Caveolin-1 (Cav-1) is essential for the morphology of membrane caveolae and exerts a negative influence on a number of signaling systems, including nitric oxide (NO) production and activity of the MAP kinase cascade. In the vascular system, ablation of caveolin-1 may thus be expected to cause arterial dilatation and increased vessel wall mass (remodeling). This was tested in Cav-1 knockout (KO) mice by a detailed morphometric and functional analysis of mesenteric resistance arteries, shown to lack caveolae. Quantitative morphometry revealed increased media thickness and media-to-lumen ratio in
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Roukoyatkina, N. "Cold acclimation-induced increase of systolic blood pressure in rats is associated with volume expansion." American Journal of Hypertension 12, no. 1 (1999): 54–62. http://dx.doi.org/10.1016/s0895-7061(98)00213-1.

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Dissertations / Theses on the topic "Pressure induced volume expansion (PIE)"

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Barnes, Paris W. "Exploring structural changes and distortions in quaternary perovskites and defect pyrochlores using powder diffraction techniques." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1064346592.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xxvi, 255 p.; also includes graphics. Includes abstract and vita. Advisor: Patrick M. Woodward, Dept. of Chemistry. Includes bibliographical references (p. 221-228).
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Book chapters on the topic "Pressure induced volume expansion (PIE)"

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Vieillard-Baron, Antoine. "Haemodynamic assessments in mechanically ventilated patients." In Oxford Textbook of Advanced Critical Care Echocardiography, edited by Anthony McLean, Stephen Huang, and Andrew Hilton. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198749288.003.0025.

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Knowledge of heart–lung interactions is key to manage haemodynamics in mechanically ventilated patients (see also Chapter 5). It allows intensivists to understand the meaning of blood and pulse pressure respiratory variations (PPV). Unlike spontaneous breathing, positive pressure ventilation increases blood pressure and pulse pressure during inspiration following by a decrease during expiration. This is called reverse pulsus paradoxus and includes a ‘d-down’ and a ‘d-up’ effect. No variation means no effect of mechanical ventilation on the heart and especially on the right heart. In case of significant PPV, tidal volume usually reduces right ventricular stroke volume by way of reducing preload where systemic venous return is decreased (fluid expansion is useful to restore haemodynamics, when impaired) or increasing afterload (obstruction of pulmonary capillaries due to alveolar inflation and, in this case, fluid expansion is useless or even sometimes deleterious). Clinical examination as well as evaluation of respiratory variations of superior vena cava by echo, helps to distinguish between these two situations. By studying the beat-by-beat changes in echo parameters induced by positive pressure ventilation heartbeat by heartbeat, echocardiography is perfectly suited to study heart–lung interactions and then to propose an appropriate optimization in case of haemodynamic impairment.
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Cao, Gang, and Lance E. DeLong. "Lattice-Driven Ruthenates." In Physics of Spin-Orbit-Coupled Oxides. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780199602025.003.0004.

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Ruthenates have extended 4d-electron orbitals and comparable Coulomb, crystalline electric field, and spin-orbit interactions, as well as significant p-d orbital hybridization and spin-lattice coupling. The physical properties of ruthenates are highly susceptible to even slight lattice distortions; as a result, external magnetic field, pressure, electrical current, and chemical doping can generate disproportionate responses in structural as well as other physical properties, which can lead to unusual ground states or phenomena. Examples of the unusual, strong coupling of the ruthenates to external stimuli include negative volume thermal expansion via orbital and magnetic order in doped Ca<sub>2</sub>RuO<sub>4</sub>, colossal magnetoresistivity via avoiding a spin-polarized state and quantum oscillations in Ca<sub>3</sub>Ru<sub>2</sub>O<sub>7</sub>, and pressure-induced transition from ferromagnetism to antiferromagnetism in Sr<sub>4</sub>Ru<sub>3</sub>O<sub>10</sub>.
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Conference papers on the topic "Pressure induced volume expansion (PIE)"

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Saeki, Souichi, Shinichi Fujinaka, and Kakuji Ogawara. "Study on Characteristics of Thermal Flow-Induced Vibration in Unlooped Heat Pipe." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45462.

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In this paper, presented is an experimental study of thermal flow-induced vibration in a both-ends-closed type self-induced oscillating heat pipe. This was made of winding glass tube to visualize the phenomenon. It was heated at the bottom to control temperature by heater, while was cooled at the top to keep temperature constant. Liquid column oscillation was excited with boiling and expansion of vapor plug. When liquid volume fraction was large, the magnitude of pressure oscillation was large and low frequency was relatively dominant. Furthermore, normalized temperature θt was proposed to inv
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Diwakar, Philip, and Lorraine Lin. "Study of Dynamic Stresses in Pipe Networks and Pressure Vessels Using Fluid-Solid-Interaction Models." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26009.

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A lack of understanding of the fluid-structure interactions has resulted in a number of infamous structural failures in the past. For example, the collapses of the Tay Bridge in Scotland in 1879, the Tacoma Bridge in 1948 and three tall cooling towers in Ferrybridge/England in 1965 have been intrinsically related to fluid forces acting on the structure. Flutter, flow-induced vibration, divergence and related phenomena may be studied using the Fluid-Solid-Interaction (FSI) approach. This paper gives three examples of the FSI approach and shows the innovative application of state-of-the-art comp
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Czapp, Marek, Matthias Utschick, Johannes Rutzmoser, and Thomas Sattelmayer. "Investigations on Slug Flow in a Horizontal Pipe Using Stereoscopic Particle Image Velocimetry and CFD Simulation With Volume of Fluid Method." In 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icone20-power2012-54591.

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Investigations on gas-liquid flows in horizontal pipes are of immanent importance for Reactor Safety Research. In case of a breakage of the main cooling circuit of a Pressurized Water Reactor (PWR), the pressure losses of the gas-liquid flow significantly govern the loss of coolant rate. The flow regime is largely determined by liquid and gas superficial velocities and contains slug flow that causes high-pressure pulsations to the infrastructure of the main cooling circuit. Experimental and numerical investigations on adiabatic slug flow of a water-air system were carried out in a horizontal p
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Fukuda, Yuka, Osamu Saito, Satoru Aoike, and Fuminori Iwamatsu. "Development of Stress Reduction Method in the Pipe Welded Zone." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77901.

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Stress Corrosion Cracking (SCC) failures have occurred in the vicinity of austenitic stainless steel pipe welds used in boiling water reactors, since the late 70s. One of the initial countermeasures against SCC has been to use low-carbon stainless steel. However, in older plants, SCC failures in low-carbon stainless steel pipe were still observed in recent years. It is well understood that residual tensile stress due to welding largely affects occurrence and growth of SCC in low-carbon stainless steel. Because of this, it is important to reduce the residual tensile stress in the welded zone in
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Monnet, Xavier, Alexia Letierce, Olfa Hamzaoui, et al. "Arterial Pressure Allows Monitoring The Changes In Cardiac Output Induced By Volume Expansion But Not By Norepinephrine." In American Thoracic Society 2011 International Conference, May 13-18, 2011 • Denver Colorado. American Thoracic Society, 2011. http://dx.doi.org/10.1164/ajrccm-conference.2011.183.1_meetingabstracts.a2633.

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Popescu, M., and W. Shyy. "Modelling of Fluid Dynamics Interacting With Ductile Fraction Propagation in High Pressure Pipeline." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55014.

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This paper presents a computational model for describing the behavior of the fluid dynamics in a fractured ductile pipe under high pressure. The pressure profile in front of the crack tip, which is the main source of the crack driving source, is computed by using nonlinear wave equation. The solution is coupled with one dimensional gas flow analysis behind the crack, choked flow. The simulation utilizes a high order optimized prefactored compact–finite volume method for space discretization, and low dispersion and dissipation Runge-Kutta for time discretization. As the pipe fractures the rapid
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Guest, Stuart, Jason Dyck, Afolabi Egbewande, Robert MacKenzie, and Mark Sadowski. "Design of In-Service Repair Welding Procedures for Operating Pipelines: Critical Assessment of Variables Affecting Restraint Level and Heat-Affected Zone Microstructures of Vintage Pipelines." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64206.

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In order to maintain pipeline operation during repair and maintenance work, operators typically install branch (i.e. hot-tap) and repair fittings (i.e. sleeves) onto flowing pipelines. In-service welding procedures must be designed for these installations per code requirement. Welding induced cracking during the installation of pressure containing repair fittings is a major concern when welding onto flowing pipelines. Repair fitting dimensions influence cooling rates and restraint conditions. A combination of high stress and brittle microstructures formed during the rapid cooling of high carbo
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Bairgi, Biswajit Kumar, and Rafiqul Tarefder. "Analysis of Foaming Properties of Asphalt Binder Through a Laser Based Non-Contact Method." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71228.

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Water injected foamed asphalt application in warm mix asphalt (WMA) accounts for more than 90% of all WMA technologies in past several years in the United States (US). Among different asphalt foaming variables: foaming temperatures, foaming water content (FWC), and air pressure are the major controlling factors of foamed asphalt binder characteristics. Foaming induced binder volume expansion and durability of the expanded volume are two contributing factors of foamed asphalt binder properties and foamed mixtures workability. This study evaluates the effect of FWC on foamed asphalt binder prope
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Teng, Shiang-Yu, and Sheng-Jye Hwang. "Simulation of Warpage Considering Both Thermal and Cure Induced Shrinkage During Molding in IC Packaging." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73062.

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Warpage is an important issue for IC packages after molding. Due to laminated structure of IC packages, significant warpage occurs owing to differences in shrinkage among constituent materials. Thermal shrinkage is usually considered as the main cause for IC warpage. However, cure induced warpage is also important during the molding process. Analysis without considering cure induced shrinkage can not predict the amount of warpage well. In this paper, TSOP LOC54L package product, which is manufactured by ChipMos Corporation, is used as the simulation model. The P-V-T-C (Pressure, Volume, Temper
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Shi, Jinhua. "Creep-Fatigue Crack for a 2¼Cr1Mo and Inconel Transition Weld." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45018.

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Transition welds have been used in some Advanced Gas-Cooled Reactors to attach a 2¼Cr1Mo spool piece to a hot reheat header, which is fabricated from 316L material. These welds were made using Inconel-82 filler and were post-weld heat-treated (PWHT) at around 705°C. In this paper, a creep-fatigue crack growth assessment has been carried out on the 2¼Cr1Mo ferritic side of the weld using the R5 procedure. As the welds have been PWHT rather than solution heat treated, therefore there are residual welding stresses present. On the 2¼Cr1Mo ferritic side of the weld, a 60MPa through-wall bending str
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