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SAE technical paper series, Volume 800603.
Evolution of the Allison Model 250 gas turbine engine is traced from model inception to the more recent 250-C28B, C28C and C30 models... 
Gas turbines
eJournal
SAE technical paper series, Volume 972673.
For the gas turbine to find acceptance in the hybrid electric automotive market its major features must be dominated by the following considerations, low cost,... 
Gas turbines | Vehicle performance | Turbochargers | Electric motors
eJournal
SAE technical paper series, Volume 932541.
In a little over thirty-five years the Auxiliary Power Unit (APU) has evolved from a simple onboard source of starting energy to a flight-essential component... 
Auxiliary power units | Gas turbines | Maintainability and supportability | Aircraft
eJournal
SAE technical paper series, Volume 751064.
The purpose of this paper is to describe the development of the 43027 electronic fuel control system, which is designed to service a wide variety of industrial... 
Electronic control systems | Gas turbines | Fuel control
eJournal
SAE technical paper series, Volume 871053.
When comparing the turboshaft and piston engine advantages from the technical and economic point of view, we are led to the conclusion that the turboshaft... 
Pistons | Hybrid engines | Gas turbines | Design Engineering and Styling
eJournal
Neuron (Cambridge, Mass.), ISSN 0896-6273, 2011, Volume 72, Issue 5, pp. 698 - 711
Journal Article
Evolutionary computation, ISSN 1063-6560, 1993
Journal
SAE technical paper series, Volume 700825.
The evolution of Pratt andamp; Whitney Aircraft turbojet and turbofan engine control systems is reviewed to provide an understanding of their ability to handle the increasing number of variables being incorporated in modern... 
Gas turbines | Engine control systems | Jet engines
eJournal
ASTRONOMY & ASTROPHYSICS, ISSN 1432-0746, 09/2019, Volume 629, p. A84
.... With a growing number of observed molecular abundances in many comets, and an improved understanding of chemical evolution in protoplanetary disk midplanes, comparisons can be made between models... 
PARENT VOLATILES | 9P/TEMPEL 1 | ORGANIC COMPOSITION | MOLECULES | HETEROGENEITY | methods: statistical | ORIGIN | C/1996 B2 HYAKUTAKE | CARBON-MONOXIDE | ASTRONOMY & ASTROPHYSICS | GAS | FRAGMENT-C | comets: general | astrochemistry
Journal Article
SAE technical paper series, Volume 2007-24-0087.
Due to the new requirements on exhaust pollutant emissions, studies on new engine processes are currently being conducted. New combustion systems such as... 
Diesel exhaust emissions | Exhaust gas recirculation (EGR) | Diesel / Compression Ignition engines | Performance tests | HCCI engines | Alternative fuels
eJournal
SAE technical paper series, Volume 2004-01-1981.
The physical and morphological properties of the particulate matter emitted from a 1.7-liter light-duty diesel engine were characterized by observing its evolution in size and fractal geometry along the exhaust system... 
Spectroscopy | Exhaust gas recirculation (EGR) | Diesel / Compression Ignition engines | Performance tests | Particulate matter (PM) | Test equipment and instrumentation | Emissions measurement | Fuel injection | Catalytic converters | Exhaust systems
eJournal
Journal Article
SAE technical paper series, Volume 972665.
Natural gas is a low cost, abundant and clean burning fuel. Current internal combustion engines can be readily adapted to use natural gas fuel either in... 
Lean burn engines | Gas engines | Fuel injection | Spark ignition engines | Natural gas
eJournal
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 2010, Volume 402, Issue 1, pp. 682 - 690
Using high-resolution hydrodynamical simulations, we explore the spin evolution of massive dual black holes orbiting inside a circumnuclear disc, relic of a gas-rich galaxy merger... 
galaxies: starburst | hydrodynamics | black hole physics | galaxies: nuclei | galaxies: evolution | Galaxies: nuclei | Galaxies: evolution | Hydrodynamics | Galaxies: starburst | Black hole physics | GALAXY MERGERS | POPULATION | RADIATION RECOIL | BINARY-SYSTEMS | ACTIVE GALACTIC NUCLEI | ALIGNMENT | ACCRETION DISCS | COALESCENCE | ASTRONOMY & ASTROPHYSICS | DYNAMICS | GAS DISCS | Fluid dynamics | Cosmology | Astrophysics | Black holes | Stars & galaxies
Journal Article
Science (American Association for the Advancement of Science), ISSN 1095-9203, 2009, Volume 326, Issue 5959, pp. 1525 - 1529
Organic aerosol (OA) particles affect climate forcing and human health, but their sources and evolution remain poorly characterized... 
Atmospheric chemistry | Atmospheric models | Aerosols | Environmental laboratories | Evolution | Reports | Oxidation | Climate models | Green chemistry | Sulfates | Atmospherics | OXIDATION | EMISSIONS | MULTIDISCIPLINARY SCIENCES | MASS | PITTSBURGH | GROWTH | SECONDARY | CHEMISTRY | MODEL | CAMPAIGN | Properties | Organic chemicals | Atmospheric aerosols
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 2012, Volume 424, Issue 1, pp. 399 - 415
Journal Article