Search Results - "Sen, Asok K."

Dynamics of cycle-to-cycle variations in a natural gas direct-injection spark-ignition engine by Sen, Asok K., Zheng, Jianjun, Huang, Zuohua

“…► Cycle-to-cycle variations (CCV) in a natural gas SI engine are investigated. ► The CCV of the indicated mean effective pressure (IMEP) are analyzed. ►…”
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Engine performance, exhaust emissions, and cyclic variations in a lean-burn SI engine fueled by gasoline–hydrogen blends by Akif Ceviz, M., Sen, Asok K., Küleri, Alp K., Volkan Öner, İ.

“…The purpose of this study is to investigate the effect of adding small amounts of hydrogen to gasoline–air mixtures on the performance and exhaust emission…”
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Analysis of cycle-to-cycle pressure oscillations in a diesel engine by Sen, Asok K., Longwic, Rafal, Litak, Grzegorz, Górski, Krzysztof

“…In this paper we study the fluctuations of mean indicated pressure (MIP) in a diesel engine. Using recurrence plots, recurrence quantification analysis and…”
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Wavelet analysis of low-frequency variability in oak tree-ring chronologies from east Central Europe by Sen, Asok K., Kern, Zoltán

“…This study investigates the low-frequency (interannual and longer period) variability in three hydroclimatic records from east Central Europe. Two of these…”
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Multifractality as a Measure of Complexity in Solar Flare Activity by Sen, Asok K

“…In this paper we use the notion of multifractality to describe the complexity in Hα flare activity during the solar cycles 21, 22, and 23. Both northern and…”
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Hydroclimate variations in central and monsoonal Asia over the past 700 years by Fang, Keyan, Chen, Fahu, Sen, Asok K, Davi, Nicole, Huang, Wei, Li, Jinbao, Seppä, Heikki

“…Hydroclimate variations since 1300 in central and monsoonal Asia and their interplay on interannual and interdecadal timescales are investigated using the…”
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Cyclic heat release variability in a spark ignition engine under exhaust gas recirculation by Sen, Asok K., Litak, Grzegorz, Wagner, Robert M.

“…We have studied cyclic heat release variability in a spark-ignition engine under exhaust gas recirculation (EGR), using nitrogen to simulate EGR. Five EGR…”
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Multiresolution Wavelet Analysis of the Dynamics of a Cracked Rotor by Sawicki, Jerzy T., Litak, Grzegorz, Sen, Asok K.

“…We examine the dynamics of a healthy rotor and a rotor with a transverse crack, which opens and closes due to its self weight. Using discrete wavelet…”
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Effect of exhaust gas recirculation on the cycle-to-cycle variations in a natural gas spark ignition engine by Sen, Asok K., Ash, Sudhir K., Huang, Bin, Huang, Zuohua

“…This study investigates the effect of exhaust gas recirculation (EGR) on the cycle-to-cycle variations (CCV) in combustion in a natural gas spark ignition…”
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Investigating the effect of hydrogen addition on cyclic variability in a natural gas spark ignition engine: Wavelet multiresolution analysis by Sen, Asok K., Wang, Jinhua, Huang, Zuohua

“…► The effect of hydrogen addition in a natural gas spark ignition engine is examined. ► Maximal overlap discrete wavelet transform (MODWT) is used. ► Using…”
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Analysis of monthly, winter, and annual temperatures in Zagreb, Croatia, from 1864 to 2010: the 7.7-year cycle and the North Atlantic Oscillation by Sen, Asok K, Ogrin, Darko

“…Long instrumental records of meteorological variables such as temperature and precipitation are very useful for studying regional climate in the past, present,…”
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Effects of ethyl-tert-butyl ether (ETBE) addition on the physicochemical properties of diesel oil and particulate matter and smoke emissions from diesel engines by Górski, Krzysztof, Sen, Asok K., Lotko, Wincenty, Swat, Marek

“…Oxygenates may be added to diesel oil to help reduce exhaust emissions from diesel engines. This study evaluates the effect of adding ethyl-tert-butyl ether…”
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Spectral-temporal characterization of riverflow variability in England and Wales for the period 1865-2002 by Sen, Asok K

“…We have investigated riverflow variability in England and Wales by examining the reconstructed monthly discharge time series from fifteen catchments in these…”
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Wavelet analysis of cycle-to-cycle pressure variations in an internal combustion engine by Sen, Asok K., Litak, Grzegorz, Taccani, Rodolfo, Radu, Robert

“…Using a continuous wavelet transform we have analyzed the cycle-to-cycle variations of pressure in an internal combustion engine. The time series of maximum…”
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Complexity analysis of riverflow time series by Sen, Asok K.

“…I have used the Lempel–Ziv measure to assess the complexity in riverflow activity over England and Wales for the period 1867–2002. In particular, I have…”
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Multifractal and statistical analyses of heat release fluctuations in a spark ignition engine by Sen, Asok K, Litak, Grzegorz, Kaminski, Tomasz, Wendeker, Mirosław

“…Using multifractal and statistical analyses, we have investigated the complex dynamics of cycle-to-cycle heat release variations in a spark ignition engine…”
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Combustion process in a spark ignition engine: analysis of cyclic peak pressure and peak pressure angle oscillations by Litak, Grzegorz, Kamiński, Tomasz, Czarnigowski, Jacek, Sen, Asok K., Wendeker, Mirosław

“…In this paper we analyze the cycle-to-cycle variations of peak pressure p max and peak pressure angle α pmax in a four-cylinder spark ignition engine. We…”
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Even–odd cycle parity in complexity of hemispheric sunspot activity by Sen, Asok K.

“…We have used the Lempel–Ziv measure to describe the complexity in sunspot activity during the solar cycles 18–23. In particular, we examined the time series of…”
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Temporal Variations of Submillennial Periodicities in Sedimentary Endogenic Calcite from Lake Edward (Central Africa) During the Late Holocene by Sen, Asok K.

“…Sedimentary records of Lake Edward in Central Africa from the late Holocene era exhibit submillennial-scale periodicities in magnesium (Mg) and stable isotope…”
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A kinetic model of troponin dissociation in relation to thin filament regulation in striated muscle by Sen, Asok K., Swartz, Darl R., Gawalapu, Ravi K.

“…► Effect of troponin dissociation on thin filament regulation in striated muscle is examined. ► A kinetic model is developed to explain the Tn dissociation…”
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