Potential 6% to 9% Power Increase for a Foil-Type “Microfab” Regenerator in the Sunpower ASC Engine

2011 ◽  
pp. 389-390
Keyword(s):  
Power Increase

Some aspects of design of the heat-shielding of an aerospace plane with power increase for the flying device

2007 ◽  
Vol 13 (1) ◽  
pp. 29-36
Author(s):  
A.S. Levenko ◽  
◽  
V.I. Kukushkin ◽  
A.V. Sichevoy ◽  
◽  
...  
Keyword(s):  
Power Increase ◽  
Heat Shielding ◽  
Aerospace Plane

Output Power Increase of Cladding Pumped 7-core EDFA by Using Mie Scattering

2020 ◽  
Author(s):  
Shigehiro Takasaka ◽  
Koichi Maeda ◽  
Ryuichi Sugizaki ◽  
Yoshihiro Arashitani
Keyword(s):  
Output Power ◽  
Mie Scattering ◽  
Power Increase

scholarly journals Analytic Description of the High-Energy Plateau in Harmonic Generation by Atoms: Can the Harmonic Power Increase with Increasing Laser Wavelengths?

2009 ◽  
Vol 102 (24) ◽  
Author(s):  
M. V. Frolov ◽  
N. L. Manakov ◽  
T. S. Sarantseva ◽  
M. Yu. Emelin ◽  
M. Yu. Ryabikin ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
High Energy ◽  
Analytic Description ◽  
Power Increase ◽  
Harmonic Power

Power increase in Q-switched two-sectional quantum well lasers due to Stark effect

2015 ◽  
Vol 41 (10) ◽  
pp. 984-986 ◽  
Author(s):  
M. S. Buyalo ◽  
I. M. Gadzhiyev ◽  
A. A. Usikova ◽  
Yu. M. Zadiranov ◽  
N. D. Il’inskaya ◽  
...  
Keyword(s):  
Quantum Well ◽  
Stark Effect ◽  
Quantum Well Lasers ◽  
Power Increase

scholarly journals Physical exercise increases overall brain oscillatory activity but does not influence inhibitory control in young adults

2018 ◽  
Author(s):  
Luis F. Ciria ◽  
Pandelis Perakakis ◽  
Antonio Luque-Casado ◽  
Daniel Sanabria
Keyword(s):  
Physical Exercise ◽  
Inhibitory Control ◽  
Frequency Band ◽  
Brain Function ◽  
Acute Exercise ◽  
Brain Activity ◽  
Oscillatory Activity ◽  
Power Increase ◽  
Oscillatory Brain Activity ◽  
Exercise Induced

AbstractExtant evidence suggests that acute exercise triggers a tonic power increase in the alpha frequency band at frontal locations, which has been linked to benefits in cognitive function. However, recent literature has questioned such a selective effect on a particular frequency band, indicating a rather overall power increase across the entire frequency spectrum. Moreover, the nature of task-evoked oscillatory brain activity associated to inhibitory control after exercising, and the duration of the exercise effect, are not yet clear. Here, we investigate for the first time steady state oscillatory brain activity during and following an acute bout of aerobic exercise at two different exercise intensities (moderate-to-high and light), by means of a data-driven cluster-based approach to describe the spatio-temporal distribution of exercise-induced effects on brain function without prior assumptions on any frequency range or site of interest. We also assess the transient oscillatory brain activity elicited by stimulus presentation, as well as behavioural performance, in two inhibitory control (flanker) tasks, one performed after a short delay following the physical exercise and another completed after a rest period of 15’ post-exercise to explore the time course of exercise-induced changes on brain function and cognitive performance. The results show that oscillatory brain activity increases during exercise compared to the resting state, and that this increase is higher during the moderate-to-high intensity exercise with respect to the light intensity exercise. In addition, our results show that the global pattern of increased oscillatory brain activity is not specific to any concrete surface localization in slow frequencies, while in faster frequencies this effect is located in parieto-occipital sites. Notably, the exercise-induced increase in oscillatory brain activity disappears immediately after the end of the exercise bout. Neither transient (event-related) oscillatory activity, nor behavioral performance during the flanker tasks following exercise showed significant between-intensity differences. The present findings help elucidate the effect of physical exercise on oscillatory brain activity and challenge previous research suggesting improved inhibitory control following moderate-to-high acute exercise.

Study on the Power Increase in Waves of a Cruise Ship with Podded Propulsion

2020 ◽  
pp. 150-162
Author(s):  
Peiyuan Feng ◽  
Yongshun Wu ◽  
Yi Feng ◽  
Sheming Fan ◽  
Jinbao Wang
Keyword(s):  
Cruise Ship ◽  
Power Increase

scholarly journals Research on the Energy Efficiency Indicators of Transport Diesel Engines under Transient Operation Conditions

Pomorstvo ◽  
2018 ◽  
Vol 32 (2) ◽  
pp. 228-238 ◽  
Author(s):  
Sergejus LebedevasPaulius ◽  
Paulius Rapalis ◽  
Rima Mickevicienė
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Engine Performance ◽  
Mechanical Efficiency ◽  
Operating Conditions ◽  
Efficiency Coefficient ◽  
Operation Conditions ◽  
Power Increase ◽  
Control Units ◽  
Additional Equipment

In this study, we have investigated the efficiency of transport diesel engines CAT3512B-HD in transient braking and acceleration modes in 2M62M locomotives. A comparative analysis of the diesel engine performance has been performed at speeds of power increase and braking ranging from 4–5 kW/s to 17–18 kW/s. A decrease in the fuel economy occurred, and the main reason for it (compared with the steady-state operating condition at qcycl = idem) has been found to be the deterioration of the mechanical efficiency coefficient due to the loss of the additional equipment kinetic energy of the engine. The efficiency decreased by 3–3.5% under power increase operations and by 10–14% in the braking modes. The original methodology for the evaluation of the diesel engine parameters registered by the engine control units (ECU) in the engine operating conditions, mathematical modelling application AVL BOOST, and analytical summaries in artificial neural networks (ANNs) have been used. The errors in the obtained results have been 5–8% at a determination coefficient of 0.97–0.99.

scholarly journals Analysis of the NUPEC PSBT Tests with FLICA-OVAP

2012 ◽  
Vol 2012 ◽  
pp. 1-18 ◽  
Author(s):  
Matteo Bucci ◽  
Philippe Fillion
Keyword(s):  
Nuclear Power ◽  
Experimental Tests ◽  
Physical Models ◽  
Rod Bundles ◽  
Two Phase ◽  
Experimental Database ◽  
Boiling Crisis ◽  
Power Increase ◽  
Relevant Role

This paper discusses the results of a computational activity devoted to the prediction of two-phase flows in subchannels and in rod bundles. The capabilities of the FLICA-OVAP code have been tested against an extensive experimental database made available by the Japanese Nuclear Power Energy Corporation (NUPEC) in the frame of the PWR subchannel and bundle tests (PSBT) international benchmark promoted by OECD and NRC. The experimental tests herein addressed involve void fraction distributions and boiling crisis phenomena in rod bundles with uniform and nonuniform heat flux conditions. Both steady-state and transient scenarios have been addressed, including power increase, flow reduction, temperature increase, and depressurization, representative of PWR thermal-hydraulics conditions. After a brief description of the main features of FLICA-OVAP, the relevant physical models available within the code are detailed. Results obtained in the different tests included in the PSBT void distribution and DNB benchmarks are therefore reported. The relevant role of selected physical models is discussed.

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