Results 11 to 20 of about 806,958 (301)

Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine

open access: yesAlexandria Engineering Journal, 2022
Reactivity-controlled compression ignition (RCCI) combustion involves in-cylinder fuels blending of varying reaction rates to enhance the combustion magnitude by stratification.
Mior A. Said   +3 more
doaj   +1 more source

A CO observation of the galactic methanol masers [PDF]

open access: yes, 2014
Context: We investigated the molecular gas associated with 6.7 GHz methanol masers throughout the Galaxy using a J=1-0 transition of the CO isotopologues. Methods:Using the 13.7-meter telescope at the Purple Mountain Observatory (PMO), we have obtained
Ju, Binggang   +5 more
core   +1 more source

Household Participation in Pollution: Case study CO2 [PDF]

open access: yesمدلسازی اقتصادسنجی, 2014
  The experiences of developed countries showed that economic development with emphasis on irregular use of environment would make serious problems on sustainable development.
Zahra Nasrollahi   +2 more
doaj   +1 more source

Impact of Athabasca oil sands operations on mercury levels in air and deposition [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Oil sands upgrading facilities in the Athabasca oil sands region (AOSR) in Alberta, Canada, have been reporting mercury (Hg) emissions to public government databases (National Pollutant Release Inventory (NPRI)) since the year 2000, yet the relative ...
A. Dastoor   +6 more
doaj   +1 more source

Unified models of molecular emission from Class 0 protostellar outflow sources [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
Low-mass star-forming regions are more complex than the simple spherically symmetric approximation that is often assumed. We apply a more realistic infall/outflow physical model to molecular/continuum observations of three late Class 0 protostellar sources with the aims of (a) proving the applicability of a single physical model for all three sources ...
Rawlings, J. M. C.   +2 more
openaire   +3 more sources

Methane emissions from western Siberian wetlands: heterogeneity and sensitivity to climate change [PDF]

open access: yes, 2007
The prediction of methane emissions from high-latitude wetlands is important given concerns about their sensitivity to a warming climate. As a basis for the prediction of wetland methane emissions at regional scales, we coupled the variable infiltration ...
Bohn, T. J.   +6 more
core   +1 more source

Arquitectura i sostenibilitat a la Mediterrània. El cas del barri de la Barceloneta

open access: yesTemes de Disseny, 2012
LIMA, Low Impact Mediterranean Architecture, és una iniciativa que pretén demostrar que la reducció drástica de l'impacte ambiental de les edificacions en països de clima càlid és viable, tant tecnològicament com econòmicament.
Joan Sabaté
doaj   +4 more sources

Influence of pruning waste biochar and oyster shell on N2O and CO2 emissions from Japanese pear orchard soil

open access: yesHeliyon, 2018
Two incubation experiments were conducted under controlled moisture and temperature conditions to determine the effects of soil amendment treatments based on pruning waste biochar and oyster shell, on N2O and CO2 emissions from an orchard soil.
Aung Zaw Oo   +4 more
doaj   +1 more source

Global carbon emission spatial pattern in 2030 under INDCs: using a gridding approach based on population and urbanization [PDF]

open access: yesInternational Journal of Climate Change Strategies and Management, 2021
Purpose – The intended nationally determined contributions (INDCs) is a major outcome of the Paris Agreement on international cooperation to reduce emissions, and is likely to be the future scenario for carbon emissions.
Le Tao, Yun Su, Xiuqi Fang
doaj   +1 more source

The effect of climate and climate change on ammonia emissions in Europe [PDF]

open access: yes, 2013
We present here a dynamical method for modelling temporal and geographical variations in ammonia emissions in regional-scale chemistry transport models (CTMs) and chemistry climate models (CCMs).
Geels, C., Skjøth, C.
core   +2 more sources

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