Gotowe bibliografie tematyczne / Exercise flow rates

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Gotowa bibliografia na temat „Exercise flow rates”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Exercise flow rates"

Villar, Rodrigo, and Richard L. Hughson. "Effect of altered arterial perfusion pressure on vascular conductance and muscle blood flow dynamic response during exercise in humans." Journal of Applied Physiology 114, no. 5 (2013): 620–27. http://dx.doi.org/10.1152/japplphysiol.01094.2012.

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Changes in vascular conductance (VC) are required to counter changes in muscle perfusion pressure (MPP) to maintain muscle blood flow (MBF) during exercise. We investigated the recruitment of VC as a function of peak VC measured in three body positions at two different work rates to test the hypothesis that adaptations in VC compensated changes in MPP at low-power output (LPO), but not at high-power output (HPO). Eleven healthy volunteers exercised at LPO and HPO (repeated plantar flexion contractions at 20–30% maximal voluntary contraction, respectively) in horizontal (HOR), 35° head-down til

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McDonald, R. B., J. S. Hamilton, J. S. Stern, and B. A. Horwitz. "Regional blood flow of exercise-trained younger and older cold-exposed rats." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 256, no. 5 (1989): R1069—R1075. http://dx.doi.org/10.1152/ajpregu.1989.256.5.r1069.

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O2 consumption (thermogenesis) and regional blood flows (measured using radioactively labeled microspheres) were evaluated in younger (12 mo) and older (24 mo) sedentary and exercised male Fischer 344 (F-344) rats. These variables were measured at rest and during exposure to 6 degrees C. Exercise-trained rats were run on a motor-driven treadmill 5 days/wk, 1 h/day, at 20 m/min for 6 mo. Resting rates of O2 consumption did not differ with age or exercise training. However, thermogenesis during cold exposure was significantly greater in the older exercised rats than in the other three groups. Th

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Marciniuk, D. D., G. Sridhar, R. E. Clemens, T. A. Zintel, and C. G. Gallagher. "Lung volumes and expiratory flow limitation during exercise in interstitial lung disease." Journal of Applied Physiology 77, no. 2 (1994): 963–73. http://dx.doi.org/10.1152/jappl.1994.77.2.963.

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Lung volumes were measured at rest and during exercise by an open-circuit N2-washout technique in patients with interstitial lung disease (ILD). Exercise tidal flow-volume (F-V) curves were also compared with maximal F-V curves to investigate whether these patients demonstrated flow limitation. Seven patients underwent 4 min of constant work rate bicycle ergometer exercise at 40, 70, and 90% of their previously determined maximal work rates. End-expiratory lung volume and total lung capacity were measured at rest and near the end of each period of exercise. There was no significant change in e

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Powers, S. K., R. E. Beadle, D. Thompson, and J. Lawler. "Ventilatory and blood gas dynamics at onset and offset of exercise in the pony." Journal of Applied Physiology 62, no. 1 (1987): 141–48. http://dx.doi.org/10.1152/jappl.1987.62.1.141.

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The purpose of these experiments was to examine the temporal pattern of arterial carbon dioxide tension (PaCO2) to assess the relationship between alveolar ventilation (VA) and CO2 return to the lung at the onset and offset of submaximal treadmill exercise. Five healthy ponies exercised for 8 min at two work rates: 50 m/min 6% grade and 70 m/min 12% grade. PaCO2 decreased (P less than 0.05) below resting values within 1 min after commencement of exercise at both work rates and reached a nadir at 90 s. PaCO2 decreased maximally by 2.5 and 3.5 Torr at the low and moderate rate, respectively. Aft

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McClaran, Steven R., Craig A. Harms, David F. Pegelow, and Jerome A. Dempsey. "Smaller lungs in women affect exercise hyperpnea." Journal of Applied Physiology 84, no. 6 (1998): 1872–81. http://dx.doi.org/10.1152/jappl.1998.84.6.1872.

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We subjected 29 healthy young women (age: 27 ± 1 yr) with a wide range of fitness levels [maximal oxygen uptake (V˙o 2 max): 57 ± 6 ml ⋅ kg−1 ⋅ min−1; 35–70 ml ⋅ kg−1 ⋅ min−1] to a progressive treadmill running test. Our subjects had significantly smaller lung volumes and lower maximal expiratory flow rates, irrespective of fitness level, compared with predicted values for age- and height-matched men. The higher maximal workload in highly fit (V˙o 2 max > 57 ml ⋅ kg−1 ⋅ min−1, n = 14) vs. less-fit (V˙o 2 max < 56 ml ⋅ kg−1 ⋅ min−1, n = 15) women caused a higher maximal ventilation (V˙e)

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Walsh, Michael L., Chiyo Takeda, Aya Takahashi, et al. "Volitional hyperventilation during ramp exercise to exhaustion." Applied Physiology, Nutrition, and Metabolism 31, no. 3 (2006): 211–17. http://dx.doi.org/10.1139/h05-025.

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The purpose of this study was to determine whether volitional hyperventilation at 20 L·min-1 above normal exercise values affected exercise duration while performing ramp exercise to exhaustion. Nine healthy subjects performed a ramp exercise test to exhaustion. On a subsequent test they hyperventilated, with the aid of visual and audio feedback, at 20 L·min-1 greater than their initial test. Ramp exercise time to exhaustion was substantially reduced from 771.6 ± 85.2 s to 726.6 ± 86.6 s (p < 0.002) with the additional hyperventilation. Subjects underwent 2 more ramp exercise tests and perf

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Fatela, Pedro, Goncalo V. Mendonca, António Prieto Veloso, Janne Avela, and Pedro Mil-Homens. "Blood Flow Restriction Alters Motor Unit Behavior During Resistance Exercise." International Journal of Sports Medicine 40, no. 09 (2019): 555–62. http://dx.doi.org/10.1055/a-0888-8816.

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AbstractWe aimed to determine whether blood flow restriction (BFR) alters the characteristics of individual motor units during low-intensity (LI) exercise. Eight men (26.0±3.8 yrs) performed 5 sets of 15 knee extensions at 20% of one-repetition maximum (with and without BFR). Maximal isometric voluntary contractions (MVC) were performed before and after exercise to quantify force decrement. Submaximal isometric voluntary contractions were additionally performed for 18 s, matching trapezoidal target-force trajectories at 40% pre-MVC. EMG activity was recorded from the vastus lateralis muscle. T

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Şahin, Elif, Teslime Ayaz, and Melda Saglam. "Acute effects of blood flow restricted aerobic exercise in type 2 diabetes mellitus." Medicine 103, no. 31 (2024): e39031. http://dx.doi.org/10.1097/md.0000000000039031.

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Background: This study aimed to compare the acute effects of aerobic exercise performed with blood flow restriction (BFR), a novel method to increase exercise gains, with blood free flow (BFF) conditions in type 2 diabetes mellitus (T2DM). Methods: Fifteen individuals with T2DM performed BFF and BFR (40% of arterial occlusion pressure) cycling exercises 48 hours apart, at equal intensity (45% heart rate reserve) and duration (38 minutes). Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), blood glucose, heart rate, and muscle oxygen saturation (SmO2) w

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Lutjemeier, Barbara J., Akira Miura, Barry W. Scheuermann, Shunsaku Koga, Dana K. Townsend, and Thomas J. Barstow. "Muscle contraction-blood flow interactions during upright knee extension exercise in humans." Journal of Applied Physiology 98, no. 4 (2005): 1575–83. http://dx.doi.org/10.1152/japplphysiol.00219.2004.

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To test for evidence of a muscle pump effect during steady-state upright submaximal knee extension exercise, seven male subjects performed seven discontinuous, incremental exercise stages (3 min/stage) at 40 contractions/min, at work rates ranging to 60–75% peak aerobic work rate. Cardiac cycle-averaged muscle blood flow (MBF) responses and contraction-averaged blood flow responses were calculated from continuous Doppler sonography of the femoral artery. Net contribution of the muscle pump was estimated by the difference between mean exercise blood flow (MBFM) and early recovery blood flow (MB

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Bayly, W. M., D. A. Schultz, D. R. Hodgson, and P. D. Gollnick. "Ventilatory responses of the horse to exercise: effect of gas collection systems." Journal of Applied Physiology 63, no. 3 (1987): 1210–17. http://dx.doi.org/10.1152/jappl.1987.63.3.1210.

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Experiments were undertaken to determine whether respiratory masks worn by horses exercising strenuously on a treadmill may interfere with normal gas exchange. Four collection systems, two flow-through systems and two incorporating one-way valve systems with subject-generated airflow were studied. Six horses performed standard treadmill exercise tests consisting of a 2-min warm up followed by galloping 1 min each at 8,9, and 10 m/s. Each horse exercised six times while wearing each of the four respiratory masks. Each flow-through system was used twice with flow rates of 2,360 and 3,840 l/min f

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Rozprawy doktorskie na temat "Exercise flow rates"

Prisby, Rhonda D., Michael W. Ramsey, Bradley J. Behnke, et al. "Aging Reduces Skeletal Blood Flow, Endothelium-Dependent Vasodilation and Nitric Oxide Bioavailability in Rats." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etsu-works/4142.

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Introduction: Aging has been shown to diminish bone blood flow in rats and humans. The purpose of this study was to determine whether blood flow to regions of the femur perfused primarily through the principal nutrient artery (PNA) are diminished with aging and whether this putative reduction in flow is associated with impaired endothelium‐dependent vasodilation. Materials and Methods: Blood flow was measured in conscious young adult (4–6 mo old) and aged (24–26 mo old) male Fischer‐344 rats using radiolabeled microspheres. Endothelium‐dependent vasodilation of the PNA was assessed in vitro us

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Allgrove, Judith E. "Factors influencing the mucosal immune response to exercise." Thesis, Loughborough University, 2007. https://dspace.lboro.ac.uk/2134/12325.

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Despite the abundance of research conducted into the effects of exercise on mucosal immunity the results remain controversial. Much of the inconsistencies arise from the exercise protocols, the participants studied and their nutritional status, as well as methodological and analytical differences. The purpose of this thesis was to examine the influence of some of these factors, and to investigate potential means of enhancing the mucosal immune response to exercise. In study 1 (Chapter 3) it was shown that a fed or fasted state 2 h prior to exercise had no effect on the s-IgA concentration or s

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We determined whether aging diminishes bone blood flow and impairs endothelium‐dependent vasodilation. Femoral perfusion was lower in old animals, as well as endothelium‐dependent vasodilation and NO bioavailability. These effects could contribute to old age—related bone loss and the increased risk of fracture. Introduction: Aging has been shown to diminish bone blood flow in rats and humans. The purpose of this study was to determine whether blood flow to regions of the femur perfused primarily through the principal nutrient artery (PNA) are diminished with aging and whether this putative red

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Holdsworth, Clark T. "Effects of dietary fish oil on skeletal muscle vascular control in chronic heart failure rats: rest and exercise." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/15814.

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Master of Science Department of Kinesiology Timothy I. Musch Impaired vasomotor control in chronic heart failure (CHF) limits the delivery of O[subscript]2 to skeletal muscle during exercise. Previous results demonstrate significant increases in skeletal muscle blood flow (BF) during exercise with omega-3 polyunsaturated fatty acid (PUFA) supplementation via fish oil (FO) versus safflower oil (SO) in healthy rats (Stebbins CL et al., Int J Sport Nutr Exerc Metab 20:475-86, 2010). Whether PUFA supplementation with FO will improve vasomotor control in CHF and skeletal muscle BF during e

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Schwagerl, Peter J. "The effects of ascorbic acid on skeletal muscle blood flow in aged rats." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4141.

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Hunt, Lindsey. "Examining the effects of caffeine ingestion on human thermoregulation during exercise in the heat in habituated and non-habituated individuals." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23167.

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Purpose: In most thermoregulatory research, participants are asked to abstain from consuming caffeine prior to experimental trials due to an assumed confounding effect on core temperature, skin blood flow and/or sweating responses. Yet, evidence supporting this notion appears inconclusive. We aimed to rigorously assess the impact of acute caffeine ingestion on thermoregulatory responses to steady-state exercise in the moderate heat in both caffeine-habituated and non-habituated individuals. Methods: A total of 28 participants (Habituated (HAB), n=14, 4 women; Non-Habituated (NHAB), n=14, 6 wom

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Glean, Angela A. "Effects of nitrite infusion on skeletal muscle vascular control during exercise in rats with chronic heart failure." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19770.

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Master of Science Department of Kinesiology Timothy I. Musch Chronic heart failure (CHF) reduces nitric oxide (NO) bioavailability and impairs skeletal muscle vascular control during exercise. Reduction of nitrite (NO[subscript]2-) to NO may impact exercise-induced hyperemia particularly in muscles with pathologically-reduced O[subscript]2 delivery. We tested the hypothesis that NO[subscript]2- infusion would increase exercising skeletal muscle blood flow (BF) and vascular conductance (VC) in CHF rats with a preferential effect in muscles composed primarily of type IIb+IId/x fibers. C

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Bond, Bert. "The influence of exercise intensity on vascular health outcomes in adolescents." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/18057.

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Cardiovascular diseases (CVD) are the leading cause of death, and the underlying atherosclerotic process has its origin in youth. Physical activity lowers future CVD risk, however few adolescents achieve the recommended minimum amount of daily activity and interventions fail to meaningfully increase activity levels in this group. It is therefore essential to identify how small volumes of exercise can be optimised for the primary prevention of CVD. The purpose of this thesis is to identify the influence of exercise intensity on vascular health outcomes in adolescents, and to assess the efficacy

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Parr, Sharon M. "The effects of graduated exercise at the piano on the pianist's cardiac output, forearm blood flow, heart rate, and blood pressure." Virtual Press, 1985. http://liblink.bsu.edu/uhtbin/catkey/434086.

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The purpose of this study was to determine the effects of graduated exercise at the piano on the pianist's cardiac output, forearm blood flow, heart rate, and blood pressure. Also considered were the effects of piano practice conditioning, general cardiovascular conditioning, and acute cigarette smoking on the aforementioned parameters during and after graduated piano exercise.Fifteen adult pianists participated in the study. The piano exercises consisted of bilateral scales played in eight three-minute stages. Tempo was constant within stages but increased with each new stage. Cardiac output

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Henry, Brad A. "STABILIZATION OF EXTENDED DIFFUSE OPTICAL SPECTROSCOPY MEASUREMENTS ON IN VIVO HUMAN SKELETAL MUSCLE DURING DYNAMIC EXERCISE." UKnowledge, 2014. http://uknowledge.uky.edu/cbme_etds/22.

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This research investigates various applications of diffuse correlation spectroscopy (DCS) on in-vivo human muscle tissue, both at rest and during dynamic exercise. Previously suspected muscle tissue relative blood flow (rBF) baseline shift during extended measurement with DCS and DCS-Near infrared spectroscopy (NIRS) hybrid optical systems are verified, quantified, and resolved by redesign of optical probe and alteration in optical probe attachment methodology during 40 minute supine bed rest baseline measurements. We then translate previously developed occlusion techniques, whereby rBF and re

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Książki na temat "Exercise flow rates"

Lung volume subdivisions and expiratory flow rates in lean and moderately obese women: At rest and during two intensities of submaximal exercise. 1988.

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Lung volume subdivisions and expiratory flow rates in lean and moderately obese women: At rest and during two intensities of submaximal exercise. 1988.

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Lung volume subdivisions and expiratory flow rates in lean and moderately obese women at rest and during two intensities of submaximal exercise. 1988.

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Lung volume subdivisions and expiratory flow rates in lean and moderately obese women: At rest and during two intensities of submaximal exercise. 1986.

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Nixon, Patricia A. Pulmonary function. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199232482.003.0006.

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The focus of this chapter is the assessment and interpretation of pulmonary function during exercise in children, with emphasis on the parameters commonly measured in the paediatric setting. The measurements of resting pulmonary function (i.e. lung volumes and expiratory flow rates) are presented to provide the basic foundation for understanding changes that occur with exercise. Some measurements are more relevant to children with cardiopulmonary disorders, and examples of normal and abnormal responses are provided. In some instances, data on children are lacking, so responses of adults are pr

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The relationship between skeletal muscle blood flow and blood lactate concentrations during exercise in rats. 1990.

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The relationships among exercise blood lactate response, muscle blood flow, and oxidative adaptation to endurance training in the rat. 1992.

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The relationships among exercise blood lactate response, muscle blood flow, and oxidative adaptation to endurance training in the rat. 1992.

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Differential control of blood flow to muscles composed predominantly of different fiber types. 1990.

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Differential control of blood flow to muscles composed predominantly of different fiber types. 1991.

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Części książek na temat "Exercise flow rates"

Wezenberg D., Houdijk J.H.P., van der Woude L.H.V., and de Haan A. "Continuous versus discontinuous protocols using a graded one-legged peak exercise test for lower limb amputees." In Assistive Technology Research Series. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-080-3-222.

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Testing patients with a uni-lateral leg amputation using a graded one-legged peak exercise test (GOPET) poses difficulties. The smaller muscle mass results in increased intramuscular tension, thereby restricting blood flow to the active muscle. This ultimately leads to enhanced local fatigue in the active muscles. This is aggravated when vascular problems are present, such as often seen in persons who underwent amputation. This study investigated the influence of a discontinuous protocol when performing a GOPET in healthy participants. It is hypothesized that the resting phase following the ex

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Kilner, Philip J., and Sonya V. Babu-Narayan. "The heart as a functional unit." In ESC CardioMed, edited by Yen Ho. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0015.

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This chapter and Chapter 3.6 address the interrelatedness of heart form, structure, and function. The principle of reciprocation between the alternate contractions of atrial and ventricular cavities is outlined, and it is explained how it is enhanced with the increased output of exercise by virtue of the directions of the forces associated with changes of momentum through the looped curvatures of the heart. The human heart’s sinuous paths of flow and its fully septated, four-chamber arrangement are features shared by the hearts of other mammals and the birds, which are also warm-blooded with r

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Peters, A. M., and M. J. Myers. "Exercises." In Physiological Measurements with Radionuclides in Clinical Practice. Oxford University PressNew York, NY, 1998. http://dx.doi.org/10.1093/oso/9780192619945.003.0014.

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Abstract During continuous infusion of bromosulphtha lein (BSP) at a rate of 1200 mg/min, the steady-state arterial concentration was 1 mg/ml and the hepatic venous BSP concentration was 0.2 mg/ml; what was liver blood flow? (Assume no extrahepatic uptake of BSP). A patient with a cardiac output of 5600 ml/min and a pulse rate of 70/min has a left ventricular ejection fraction of 0.64. What are the left ventricular end-diastolic and end-systolic volumes? Following injection of a labelled intravascular tracer, cerebral blood volume was found to be 75 ml; if cerebral blood flow was 250 ml/min, w

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Wray, Jo. "The Impact of Congenital Heart Disease on Cognitive and Behavioral Functioning." In Cognitive and Behavioral Abnormalities of Pediatric Diseases. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195342680.003.0011.

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Congenital heart disease (CHD) has been defined as “. . . a gross structural abnormality of the heart or intrathoracic great vessels that is actually or potentially of functional significance” (Mitchell, Korones, and Berendes 1971). Congenital heart disease is the most common single group of congenital abnormalities, accounting for about 30% of the total. The incidence is reported as varying between 0.3% and 1% of all live births. Ten to 15% of children with congenital heart defects have more than one cardiac abnormality; up to one-third also have one or more associated noncardiac congenital a

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Connes Philippe, Brun Jean-Frédéric, and Baskurt Oguz K. "Blood Rheology and Exercise." In Biomedical and Health Research. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-497-9-213.

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Hemorheology is the science of the deformation and flow of blood and its formed elements (mainly red blood cells and to a lesser part white blood cells and platelets). This field includes investigating the bulk properties of blood, determined in viscometric experiments in macroscopic samples, and its microscopic properties. The present review will first consider the known and postulated effects of blood rheological properties on aerobic performance as related to its effects on oxygen delivery and second, the acute and long term effects of exercise on blood rheology. Blood and plasma viscositie

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Ellestad, Myrvin H. "History of Stress Testing." In Stress Testing Principles and Practice. Oxford University PressNew York, NY, 2003. http://dx.doi.org/10.1093/oso/9780195159288.003.0001.

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Abstract The cornerstone of modern stress testing is based on the empirical discovery that exercise in patients with coronary disease produces ST-segment depression. This discovery might be credited to Bousfield, who recorded STsegment depression in the three standard ECG leads during a spontaneous attack of angina in 1918; or, it might be credited to Feil and Siegel, who, in 1928, actually exercised patients with known angina to bring about pain and, concurrently, the ST- and T-wave changes we now recognize as showing evidence of ischemia. These researchers described the changes as being due

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Magder, Sheldon. "Mechanical Limits of Cardiac Output at Maximal Aerobic Exercise." In Exercise Physiology [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.103908.

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This chapter uses an analytic approach to the factors limiting maximal aerobic exercise. A person’s maximal aerobic work is determined by their maximal oxygen consumption (VO2max). Cardiac output is the dominant determinant of VO2 and thus the primary determinant of population differences in VO2max. Furthermore, cardiac output is the product of heart rate and stroke volume and maximum heart rate is determined solely by a person’s age. Thus, maximum stroke volume is the major factor for physiological differences in aerobic performance. Stroke output must be matched by stroke volume return, whic

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Price M., Bhogal R., Thake C.D., and Bottoms L.M. "Lower limb skin blood flow and calf volume changes during continuous and intermittent upper body exercise." In Assistive Technology Research Series. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-080-3-94.

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Purpose: To determine the changes in thigh and calf skin blood flow during continuous and intermittent upper body exercise. Methods: Eight healthy able-bodied males undertook a preliminary incremental arm crank ergometry (ACE) test to volitional exhaustion and two experimental trials. Experimental trials consisted of either 28 min of continuous ACE at 50% peak power (CON) or 28 min intermittent exercise (INT) involving alternating 2 min bouts of ACE at 25% and 75% peak power. Changes in skin blood flow were measured by Laser Doppler techniques. Changes in calf volume were measured by strain ga

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Baskurt Oguz K. and Meiselman Herbert J. "Endothelial Function and Physical Activity." In Biomedical and Health Research. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-497-9-230.

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Endothelium serves as the permeability barrier between the blood and interstitial space. Endothelial function includes the production, secretion and metabolisation of bio-active molecules. Endothelium also plays significant roles in cell migration, remodeling of the vasculature (including proliferation and apoptosis). Finally, endothelial function is an important effector in the regulatory processes of vascular tonus which in turn determines the flow resistance. The role of hemodynamic shear forces in modulating the endothelial function is now well established. Cardiac output and flow rate in

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Streszczenia konferencji na temat "Exercise flow rates"

Adey, Robert, Andres Peratta, John Baynham, and Thomas Curtin. "Using a Computational Galvanic Model in a Fracture Mechanics Framework to Improve Material Degradation Prediction." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14646.

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Abstract Although computational methods have been separately developed to predict corrosion and fatigue crack growth rates for metallic structures, challenges remain in implementing a methodology that considers the combined effects. In this work the output from a galvanic model is used to determine the spatial distribution of corrosion damage; providing a guide for the location of discrete corrosion damage features that can be analyzed using stress fields from structural models. In order to build confidence in this approach the galvanic models are validated by comparing predicted results to su

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Adey, Robert, Andres Peratta, John Baynham, and Thomas Curtin. "Using a Computational Galvanic Model in a Fracture Mechanics Framework to Improve Material Degradation Prediction." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16509.

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ABSTRACT Although computational methods have been separately developed to predict corrosion and fatigue crack growth rates for metallic structures, challenges remain in implementing a methodology that considers the combined effects. In this work the output from a galvanic model is used to determine the spatial distribution of corrosion damage; providing a guide for the location of discrete corrosion damage features that can be analyzed using stress fields from structural models. In order to build confidence in this approach the galvanic models are validated by comparing predicted results to su

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Vivodtzev, Isabelle, Erwan L'Her, Claire Yankoff, et al. "Automatically adjusted oxygen flow rates to stabilize oxygen saturation during exercise in O2-dependent and hypercapnic COPD." In ERS International Congress 2016 abstracts. European Respiratory Society, 2016. http://dx.doi.org/10.1183/13993003.congress-2016.pa1567.

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Monaco, Lucio, Damian M. Vogt, and Torsten H. Fransson. "Implementation of a Remote Pump Laboratory Exercise in the Training of Engineering Students." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69983.

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The use of laboratory exercises in the training of engineering students is of paramount importance to give the students the possibility to gain practical experience on real hardware and on real test data. Recent trends in the education of engineers at the Department of Energy Technology at KTH go towards an increasing share of distant-based education, which is put in place to educate students at different geographic locations, not only locally (such as for example with engineers in industry) but also internationally (i.e. with students in different countries). In order to provide the possibili

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Arzani, Amirhossein, Ga Young Suh, Michael V. McConnell, Ronald L. Dalman, and Shawn C. Shadden. "Progression of Abdominal Aortic Aneurysm: Effect of Lagrangian Transport and Hemodynamic Parameters." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14643.

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Abdominal aortic aneurysm (AAA) is a permanent, localized enlargement of the abdominal aorta that accompanies disturbed blood flow, which is thought to perpetuate aneurysm progression. AAA rupture is a leading cause of death in the elderly and an exact intervention decision for this disease has always been associated with uncertainty. There is currently no medicinal treatment of AAA, however lower extremity exercise has been a proposed therapy. Specifically, elevated flow rates in the abdominal aorta, reduced retrograde flow, higher mean wall shear stress, and lower oscillatory shear index res

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Lawrence, Edwin, Marie Bjoerdal Loevereide, Sanggeetha Kalidas, Ngoc Le Le, Sarjono Tasi Antoneus, and Tu Le Mai Khanh. "Production Optimization in Mature Field Through Scenario Prediction Using a Representative Network Model: A Rapid Solution Without Well Intervention." In SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205662-ms.

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Abstract As part of the production optimization exercise in J field, an initiative has been taken to enhance the field production target without well intervention. J field is a mature field; the wells are mostly gas lifted, and currently it is in production decline mode. As part of this optimization exercise, a network model with multiple platforms was updated with the surface systems (separator, compressors, pumps, FPSO) and pipelines in place to understand the actual pressure drop across the system. Modelling and calibration of the well and network model was done for the entire field, and th

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Ellam, Darren J., Raymond J. Atkin, and William A. Bullough. "Appraisal of an ESF Radial Plate Clutch With Cooling Flow Using a NNF CFD Solver." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1940.

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Abstract To aid the application of electro-structured fluid (ESF) devices, a virtual two plate radial clutch is examined in a pre-prototyping exercise to estimate the effect of a radial cooling flow on pre-set torque transmission. A throughflow of ESF will act to keep the fluid temperature under control making such devices more reliable over a wider operating range. The ESF is treated as a Bingham viscoplastic material and clutch behaviour is investigated under steady state isothermal conditions. The resulting two-dimensional non-Newtonian fluid (NNF) model is solved using a computational flui

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Konecni, Snezana, and Nathan K. Bultman. "Influence of CFD Analysis on the Design of Cooling Channels for the CCL Cavity for the Spallation Neutron Source." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2079.

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Abstract Water flow in cooling channels was simulated using the computational fluid dynamics (CFD) code CFX4. Pressure drop in the cooling channels of the coupled-cavity linac (CCL) cavity was calculated. The effects of the manifold on the pressure drop were studied also. Reducing the pressure drop was a primary goal of this exercise that led to changing the cooling channel entrance regions. Results of this analysis were used in sizing pumps required for the cooling system. For the validation of the simplified numerical model, an experiment was performed to measure the pressure drop in the coo

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Kara, Ceyda, Hang Yi, Ahmadreza Haghnegahdar, and Yu Feng. "Comparative Computational Fluid Dynamics Analysis of Pulmonary Airway Flow and Surgical Outcomes for a Patient with Tracheal Stenosis." In 2025 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2025. https://doi.org/10.1115/dmd2025-1083.

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Abstract Tracheal stenosis, a severe airway narrowing, poses significant challenges in respiratory function and often necessitates surgical intervention to restore proper airflow. This study aims to demonstrate how computational fluid dynamics (CFD) can provide a non-invasive, efficient, and highly individualized approach to assist surgeons in modeling and planning various surgical strategies for treatment. The CFD-based approach in this study provides significant advantages, including reduced time and cost, and the ability to analyze complex pulmonary airflow characteristics that are difficul

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Almannai, Mohammed, and Muhammad Javed. "Method to Operate Water Wells at Optimum Rates Utilizing Orifice Performance Curves." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213759-ms.

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Abstract Wells, e.g., water wells (injectors, disposal and supply) operate at designated rates set by reservoir engineers. The objective of producing/injecting these wells at optimum rates is to prolong the well's and reservoir's life. To effectively apply the mentioned objective, each well is assigned a target by the reservoir engineer to either produce or inject. Wells meeting this assigned target are called "compliant" wells while wells that do not meet the set target, whether above or below the target with a specified margin, are classified as "noncompliant" wells. This paper discusses a u

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Raporty organizacyjne na temat "Exercise flow rates"

Suksom, Daroonwan, Jettanong Klaewsongkram, Wannaporn Tongtako, and Nutdanai Jaronsukwimal. Effect of acute exercises, chronic exercise training and vitamin C supplementation on physiological change and symptoms in allegic rhinitis patients. Chulalongkorn University, 2013. https://doi.org/10.58837/chula.res.2013.72.

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The aim of this present study was to investigate an effect of acute exhaustive and moderate intensities exercises, exercise training and vitamin C supplementation on physiological change and rhinitis symptoms in allergic rhinitis patients. There were two studies: Study I : The subjects, aged18-45 years old, were divided into 2 groups: 14 healthy individuals and 13 allergic rhinitis (AR) patients. They were assigned to perform the strenuous exercise on treadmill by using Bruce protocol until they were exhausted. Two weeks later, they were assigned to perform a moderate exercise by walking on tr

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Patumraj, Suthiluk, and Sheepsumon Viboolvorakul. Protective effects of exercise training against vascular and neuronal dysfunction in aging brain. Department of Physiology, Faculty of Medicine, Chulalongkorn University, 2019. https://doi.org/10.58837/chula.res.2019.11.

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During advancing age, reduction of microvessels in the brain contributes insufficiency tissue perfusion. Mounting evidence indicates that microvascular deterioration in aged brain relates to oxidative stress. Nuclear factor erythroid-related factor 2 (Nrf2) plays an important role in cellular antioxidant defense. Regular physical exercise is well known to have beneficial effect to brain health, including promoted blood flow and augmented angiogenesis, in aging individuals. However, the underlying mechanism of regular physical exercise in improvement of brain microvascular density during advanc

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Suksom, Daroonwan, Chaicharn Deerochanawong, Tanaka, Hirofumi, and Witid Mitranun. The comparison effects of aerobic continuous training and aerobic interval training on glycemic control and endothelial function in type 2 diabetes mellitus. Chulalongkorn University, 2013. https://doi.org/10.58837/chula.res.2013.71.

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The objective of this study was to compare the effects of continuous aerobic exercise training (CON) and interval aerobic exercise training (INT) on glycemic control and endothelium-dependent vasodilatation in patients with type 2 diabetes. A total of 43 participants with type 2 diabetes aged 50-70 years were stratified in parallel-group study and randomly allocated to the sedentary control, continuous aerobic training (CON), and interval aerobic training ( INT) groups. Exercise training programs were designed to yield the same energy expenditure/exercise session and included walking on treadm

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De Brun, Julio. Growth in Uruguay: Factor Accumulation or Productivity Gains? Inter-American Development Bank, 2004. http://dx.doi.org/10.18235/0008730.

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This paper is part of the project "Explaining Economic Growth Performance" launched by the Global Development Network (GDN). The purpose of this project is to explain economic growth performances across seven regions. During the last five decades the Uruguayan economy faced volatile macroeconomic conditions. Economic policies swung from highly controlled capital flows, exchange rates, and interest rates to the introduction of significant financial liberalization. This study will show that the upturn in economic growth since liberalization is due to improved resource allocation that, in turn, p

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Brosh, Arieh, David Robertshaw, Yoav Aharoni, Zvi Holzer, Mario Gutman, and Amichai Arieli. Estimation of Energy Expenditure of Free Living and Growing Domesticated Ruminants by Heart Rate Measurement. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580685.bard.

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Research objectives were: 1) To study the effect of diet energy density, level of exercise, thermal conditions and reproductive state on cardiovascular function as it relates to oxygen (O2) mobilization. 2) To validate the use of heart rate (HR) to predict energy expenditure (EE) of ruminants, by measuring and calculating the energy balance components at different productive and reproductive states. 3) To validate the use of HR to identify changes in the metabolizable energy (ME) and ME intake (MEI) of grazing ruminants. Background: The development of an effective method for the measurement of

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Panek, Jeffrey, Adrian Huth, and Benjamin Shwaiko. PR-312-22200-Z01 Isolation Valve - Improved GHG Leak Detection Summary of Initial Testing Results. Pipeline Research Council International, Inc. (PRCI), 2024. http://dx.doi.org/10.55274/r0000077.

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This project investigated and evaluated commercially available optical IR and acoustic technologies. The IR cameras were used to detect a temperature differential across the valve indicating a Joule-Thompson (JT) pressure drop and leak through the valve. Direct acoustically coupled instruments were used to detect "noise" generated from turbulence associated with through-valve leakage. In addition, other instruments were explored that had the potential to detect turbulence-induced vibrations. During the instrumentation evaluation, fugitive leak screening and detection methods for assessing thro

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Michel, Bob, and Tatiana Falcão. Taxing Profits from International Maritime Shipping in Africa: Past, Present and Future of UN Model Article 8 (Alternative B). Institute of Development Studies (IDS), 2021. http://dx.doi.org/10.19088/ictd.2021.023.

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International maritime shipping is an essential part of global business. Since the establishment of the current international tax regime in the 1920s, there has been a consensus that profits generated by this business are taxable only in the residence state –the state where the shipowners are located. Source states – the port states where business physically takes place – are generally expected to exempt income from international shipping. This standard is currently reflected in Article 8 of the OECD Model and Article 8 (Alternative A) of the UN Model, and is incorporated in the vast majority

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Financial Stability Report - Second Semester of 2021. Banco de la República, 2022. http://dx.doi.org/10.32468/rept-estab-fin.sem2.eng-2021.

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Banco de la República’s main objective is to preserve the purchasing power of the currency in coordination with the general economic policy that is intended to stabilize output and employment at long-term sustainable levels. Properly meeting the goal assigned to the Bank by the 1991 Constitution critically depends on preserving financial stability. This is understood to be a general condition in which the financial system assesses and manages the financial risks in a way that facilitates the economy’s performance and efficient allocation of resources while, at the same time, it is able to, on

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Financial Stability Report - Second Semester of 2020. Banco de la República de Colombia, 2021. http://dx.doi.org/10.32468/rept-estab-fin.sem2.eng-2020.

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The Colombian financial system has not suffered major structural disruptions during these months of deep economic contraction and has continued to carry out its basic functions as usual, thus facilitating the economy's response to extreme conditions. This is the result of the soundness of financial institutions at the beginning of the crisis, which was reflected in high liquidity and capital adequacy indicators as well as in the timely response of various authorities. Banco de la República lowered its policy interest rates 250 points to 1.75%, the lowest level since the creation of the new ind

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