Results 61 to 70 of about 22,918 (184)

Bees feeling the burn

open access: yesBiological Reviews, Volume 101, Issue 1, Page 279-296, February 2026.
ABSTRACT Fire is a major form of environmental disturbance, and in recent years, due to anthropogenic climate change and anthropogenic land management, we are seeing increases in the frequency and intensity of fires. With bees being an important, diverse group of pollinators that is facing declines globally, understanding how they respond to fires is ...
Kit S. Prendergast   +2 more
wiley   +1 more source

Effects of Postinjection Application with Late Partially Premixed Combustion on Power Production and Diesel Exhaust Gas Conditioning

open access: yesJournal of Combustion, 2011
The effects of postinjection with late partially premixed charge compression ignition (PCCI) were investigated with respect to diesel exhaust gas conditioning and potential power production. Initial tests comparing postinjection application with PCCI to
Marko Jeftić   +5 more
doaj   +1 more source

Experimental study of the effect of cycle pressure on lean combustion emissions [PDF]

open access: yes
Experiments were conducted in which a stream of premixed propane and air was burned under conditions representative of gas turbine operation. Emissions of NOx, CO, and unburned hydrocarbons (UHC) were measured over a range of combustor inlet temperature,
Roffe, G., Venkataramani, K. S.
core   +1 more source

EFFECT OF SiO2 NANOPARTICLES ADDED TO DIESEL FUEL ON THE PERFORMANCE AND POLLUTANT EMISSIONS OF A FOUR STROKE DIESEL ENGINE

open access: yesIraqi Journal for Mechanical and Materials Engineering, 2019
Experimental work has been conducted using silica oxide SiO2 nanoparticle as an additive to diesel fuel in a compression ignition engine in order to reduce pollutants emissions and to improve engine performance.
Samer M Abdulhaleem
doaj   +1 more source

Optimization and Performance Evaluation of Diesel Oxidation Catalysts for Methane Removal in Dual-Fuel Diesel–CNG Engines

open access: yesEnergies
Compressed natural gas (CNG) in dual-fuel diesel engines offers environmental benefits but significantly increases unburned methane (CH4) emissions, especially at low engine loads.
Piotr Wiśniowski   +4 more
doaj   +1 more source

An Investigation of the Influence of Gas Injection Rate Shape on High-Pressure Direct-Injection Natural Gas Marine Engines

open access: yesEnergies, 2019
High-pressure direct-injection (HPDI) natural gas marine engines are widely used because of their higher thermal efficiency and lower emissions. The effects of different injection rate shapes on the combustion and emission characteristics were studied to
Jingrui Li   +8 more
doaj   +1 more source

Utilization of Palm Frond Waste as Fuel for Co-Firing Coal and Biomass in a Tangentially Pulverized Coal Boiler Using Computational Fluid Dynamic Analysis

open access: yesBiomass
Renewable energy sources are becoming increasingly crucial in the global energy industry and are acknowledged as a significant substitute for fossil fuels.
Sobar Ihsan   +4 more
doaj   +1 more source

Catalytic combustion of actual low and medium heating value gases [PDF]

open access: yes
Catalytic combustion of both low and medium heating value gases using actual coal derived gases obtained from operating gasifiers was demonstrated. A fixed bed gasifier with a complete product gas cleanup system was operated in an air blown mode to ...
Bulzan, D. L.
core   +1 more source

Off-center ignition in type Ia supernova: I. Initial evolution and implications for delayed detonation [PDF]

open access: yes, 2006
The explosion of a carbon-oxygen white dwarf as a Type Ia supernova is known to be sensitive to the manner in which the burning is ignited. Studies of the pre-supernova evolution suggest asymmetric, off-center ignition, and here we explore its ...
Hillebrandt, W.   +2 more
core   +2 more sources

The Impact of Diesel Injection Strategy and In-Cylinder Temperature on the Combustion and Emissions of Ammonia/Diesel Dual-Fuel Marine Engine

open access: yesEnergies
This study investigates the impact of different combustion control strategies on marine engine combustion and emission characteristics at a high ammonia energy ratio.
Wei Guan   +8 more
doaj   +1 more source

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