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SAE technical paper series, Volume 2003-01-1935.
A study was conducted to investigate combustion variability and exhaust emissions from high-speed, natural gas fueled engines... 
Lean burn engines | Emissions control | Spark ignition engines | Natural gas | Alternative fuels
eJournal
SAE technical paper series, Volume 972977.
The report quantifies regional and seasonal variations in the composition, chemical and physical properties of natural gas in Brazil over a five-years time... 
Exhaust emissions | Developing countries | Design Engineering and Styling | Natural gas | Engines | Emissions | Alternative fuels
eJournal
SAE technical paper series, Volume 900385.
The effect of high compression ratio on cycle-to-cycle variability was studied using two different combustion chamber shapes, with natural gas operation... 
Diesel / Compression Ignition engines | Performance tests | Combustion chambers | Natural gas
eJournal
SAE technical paper series, Volume 2013-01-0862.
Running an internal combustion engine with diluted methane/air mixtures has a potential of reducing emissions and increasing efficiency. However, diluted... 
Combustion and combustion processes | Ignition systems | Natural gas
eJournal
SAE technical paper series, Volume 2013-01-0862.
Running an internal combustion engine with diluted methane/air mixtures has a potential of reducing emissions and increasing efficiency. However, diluted... 
Combustion and combustion processes | Ignition systems | Natural gas
eJournal
SAE technical paper series, Volume 2001-01-0144.
Few diesel vehicles engines from Czech production have been converted into gas (LPG, CNG) fuelled SI engines. The higher power engines (peMAX 1 MPa) used the... 
Trucks | Gases | Diesel / Compression Ignition engines | Buses | Compressed natural gas | Emissions | Alternative fuels
eJournal
Journal of geophysical research. Atmospheres, ISSN 2169-897X, 2016, Volume 121, Issue 5, pp. 2060 - 2074
Recent Mediterranean droughts have highlighted concerns that climate change may be contributing to observed drying trends, but natural climate variability in the region is still poorly understood. We analyze 900 years (1100–2012... 
dendrochronology | Mediterranean | drought | paleoclimate | Drought | Climate change | Meteorology | Atmospheric forcing | Natural variability | Variability | North Atlantic Oscillation | Forced drying | Rainfall | Oscillations | Climatic changes | Anthropogenic factors | Climatic variability | Precipitation | Droughts | Resampling | Ocean-atmosphere system | Drought index | Drying | Anomalies | Reconstruction | North Atlantic oscillation | Basins | Estimating | Driers
Journal Article
Global change biology, ISSN 1354-1013, 2013, Volume 19, Issue 1, pp. 75 - 89
Journal Article
Science (American Association for the Advancement of Science), ISSN 1095-9203, 2011, Volume 334, Issue 6054, pp. 347 - 351
Journal Article