Results 11 to 20 of about 27,476 (208)

Computational assessment of the effects of pre-chamber and piston geometries on the combustion characteristics of an optical pre-chamber engine

Fuel, 2023
Pre-chamber combustion (PCC) has the potential to extend the lean-burn limit in spark-ignition engines, which can promote engine efficiency and relieve the concern of emissions of nitrogen oxides. This work assessed the effects of pre-chamber (PC) and piston geometries on the combustion characteristics of an optical methane PCC engine with both ...
Xinlei Liu, Manuel Echeverri Marquez, Sangeeth Sanal, Mickael Silva, Abdullah S. AlRamadan, Emre Cenker, Priybrat Sharma, Gaetano Magnotti, James W.G. Turner, Hong G. Im   +9 more
openaire   +2 more sources

Numerical Simulation of Intrachamber Processes in the Power Plant

Applied Sciences, 2021
This paper considers the issues of numerical modeling of nonstationary spatial gas dynamics in the pre-nozzle volume of the combustion chamber of a power plant with a cylindrical slot channel at the power plant of the mass supply surface.
Boris Benderskiy, Peter Frankovský, Alena Chernova   +2 more
doaj   +1 more source

Estimates of the air-fuel ratio at the time of ignition in a pre-chamber using a narrow throat geometry [PDF]

International Journal of Engine Research, 2021
The benefits of pre-chamber combustion (PCC), such as improved engine efficiency and reduced NOx emissions, are primarily observed when operating at lean conditions with an active pre-chamber, where auxiliary fuel is supplied directly to the pre-chamber.
Ponnya Hlaing, Mickael Silva, Manuel Echeverri Marquez, Emre Cenker, Moez Ben Houidi, Hong G Im, James WG Turner, Bengt Johansson   +7 more
openaire   +2 more sources

Changes in epicardial and visceral adipose tissue depots following bariatric surgery and their effect on cardiac geometry

Frontiers in Endocrinology, 2023
IntroductionObesity affects cardiac geometry, causing both eccentric (due to increased cardiac output) and concentric (due to insulin resistance) remodelling. Following bariatric surgery, reversal of both processes should occur.
J. A. Henry, I. Abdesselam, O. Deal, A. J. Lewis, J. Rayner, M. Bernard, A. Dutour, B. Gaborit, F. Kober, A. Soghomonian, B. Sgromo, J. Byrne, T. Bege, S. Neubauer, B. A. Borlaug, O. J. Rider   +15 more
doaj   +1 more source

Influence of pre-chamber nozzle and main chamber geometry on ammonia combustion: A combined experimental and predictive study

Applied Thermal Engineering
V Baiju, Mitsuhisa Ichiyanagi
exaly   +2 more sources

Turbulent burning velocity in combustion chamber of SI engine fueled with compressed biogas

Vietnam Journal of Mechanics, 2015
Turbulent burning velocity is the most important parameter in analyzing pre-mixed combustion simulation of spark ignition engines. It depends on the laminar burning velocity and turbulence intensity in the combustion chamber.
Bui Van Ga, Nguyen Van Dong, Bui Van Hung   +2 more
doaj   +1 more source

Initial experience with ablation of the innervation surrounding sinus and atrioventricular nodes to treat paroxysmal bradyarrhythmia

Chinese Medical Journal, 2020
. Background. The symptomatic bradyarrhythmia is Class I indication for pacing therapy which is not a radical cure. The present study aimed to assess the feasibility and to present the initial results of the restricted ablation of the parasympathetic ...
Chun-Shan Lu, Cheng-Jun Guo, Dong-Ping Fang, Peng Hao, Dong-Fang He, Ai-Guo Xu, Peng Lyu   +6 more
doaj   +1 more source

A Monte Carlo Method for Determining the Response Relationship between Two Commonly Used Detectors to Indirectly Measure Alpha Particle Radiation Activity

Molecules, 2019
Using targeted ligands to deliver alpha-emitting radionuclides directly to tumor cells has become a promising therapeutic strategy. To calculate the radiation dose to patients, activities of parent and daughter radionuclides must be measured ...
Christopher J. Tichacek, Mikalai M. Budzevich, Thaddeus J. Wadas, David L. Morse, Eduardo G. Moros   +4 more
doaj   +1 more source

Numerical Investigation on the Performance of a 4-Stroke Engine with Different Passive Pre-Chamber Geometries Using a Detailed Chemistry Solver

Energies, 2022
Pre-chamber turbulent jet ignition represents one of the most promising techniques to improve spark ignition engines efficiency and reduce pollutant emissions. This technique consists of igniting the air-fuel mixture in the main combustion chamber by means of several hot turbulent flame jets exiting a pre-chamber.
Bigalli, S, Catalani, I, Balduzzi, F, Matteazzi, N, Agostinelli, L, De Luca, M, Ferrara, G   +6 more
openaire   +2 more sources

Structure and petrography of the Valle Mosso pluton, Sesia Magmatic System, Southern Alps

Journal of Maps, 2017
The Valle Mosso pluton (VMP) is a Permian granitic body intruded at intermediate to upper crustal levels in the rocks of the pre-Alpine basement of the Ivrea-Verbano Zone and Serie dei Laghi shortly after the end of Variscan orogeny.
L. Tavazzani, S. Peres, S. Sinigoi, G. Demarchi, G. Musumeci   +4 more
doaj   +1 more source