Results 241 to 250 of about 390,980 (293)
Simultaneous control of soot emissions and pressure rise rate in gasoline PPC engine
2017 IEEE Conference on Control Technology and Applications (CCTA), 2017 Partially Premixed Combustion (PPC) is an advanced combustion concept resulting in high efficiencies and low emission levels by the use of high levels of EGR and pilot injections. The main limitation of PPC to use in practice lies in the high pressure rise rate, which causes issues on engine noise and durability.
Tianhao Yang +5 more
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Hemodynamic determinants of the maximal rate of rise of left ventricular pressure
American Journal of Physiology-Legacy Content, 1963 The maximal rate of left ventricular pressure development (max. dp/dt) was measured in an areflexic preparation which permitted independent control of stroke volume, heart rate, and aortic pressure. Max. dp/dt increased as a result of elevating ventricular end-diastolic pressure.
A G, WALLACE +2 more
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Approach determining maximum rate of pressure rise for dust explosion
Journal of Loss Prevention in the Process Industries, 2014Abstract The risk assessment requires the knowledge of dust explosion hazard data. Maximum rate of pressure rise is an important parameter of explosion severity characteristics. Its accuracy depends on the experimental conditions and the approach determining maximum rate of pressure rise.
Qi Zhang, Qiuju Ma, Bo Zhang
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Journal of Hazardous Materials, 2007
The maximum rates of pressure rise of propylene-air explosions at various initial pressures and various fuel/oxygen ratios in three closed vessels (a spherical vessel with central ignition and two cylindrical vessels with central or with top ignition) are reported. It was found that in explosions of quiescent mixtures the maximum rates of pressure rise
Domnina Razus +2 more
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The maximum rates of pressure rise of propylene-air explosions at various initial pressures and various fuel/oxygen ratios in three closed vessels (a spherical vessel with central ignition and two cylindrical vessels with central or with top ignition) are reported. It was found that in explosions of quiescent mixtures the maximum rates of pressure rise
Domnina Razus +2 more
exaly +3 more sources
The maximum rate of pressure rise of hybrid mixtures
Journal of Loss Prevention in the Process Industries, 2023 The maximum rate of pressure rise (dp/dt) and the corresponding K-value of hybrid mixtures containing flammable gases and dusts are important for constructive explosion protection measures.
Stefan H. Spitzer +7 more
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On the Methods Based on the Pressure Rise Test for Monitoring a Freeze-Drying Process [PDF]
Drying Technology, 2010 Davide Fissore +2 more
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Modeling the temperature rise in high-pressure torsion
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2014 Experiments and finite element modeling were used to estimate the temperature rise during high-pressure torsion. The results show the temperature rise is dependent upon the material strength, the rotation rate, the sample radius, the heat capacity and ...
Pedro Henrique R Pereira +2 more
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Effects of Pneumatic Artificial Heart Driver on the Rate of Isovolumic Pressure Rise
Artificial Organs, 1988Abstract: : The aim of the research was to investigate the effects of three parameters of the artificial heart's performance on the (+) dP/dt max. Specifically, the effects of heart rate, left‐sided drive pressure, and percent systole (the independent variables) on the (+) dP/dt max (the dependent variable) were examined. The study was conducted using
R, Henker, C, Murdaugh
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Noninvasive Estimation of Rate of Rise of Left Ventricular Pressure
American Journal of Noninvasive Cardiology, 2017Noninvasive estimation of the rate of rise of left ventricular pressure was accomplished by simultaneous electrocardiographic, phonocardiographic and continuous wave Doppler recordings together with measurements of the diastolic blood pressure (DBP) by a sphygmomanometer.
Kjell Karp +3 more
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Radiotelemetric characterization of overweight-associated rises in blood pressure and heart rate
American Journal of Physiology-Heart and Circulatory Physiology, 1999We addressed the hypothesis that hypercaloric diets induce hyperkinetic hypertension irrespective of day-night cycle and locomotor activity that is associated with altered cardiac myosin isozymes. Normotensive rats with implanted radiotelemetry pressure transducers were fed increasing amounts of coconut fat (8, 16, and 24%, each for 2 wk ...
H, Rupp, B, Maisch
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