Results 71 to 80 of about 21,010,748 (236)

Evidence of boosted 13CO/12CO ratio in early-type galaxies in dense environments [PDF]

open access: yes, 2015
We present observations of $^{13}$CO(1-0) in 17 Combined Array for Research in Millimeter Astronomy (CARMA) Atlas3D early-type galaxies (ETGs), obtained simultaneously with $^{12}$CO(1-0) observations.
Aalto, Susanne   +8 more
core   +3 more sources

Co and Cu‐Based Mixed Metal Oxides Foster Reduction of CO and Hydrocarbons Emissions from Small Combustion Devices

open access: yesChemCatChem, Volume 17, Issue 7, April 4, 2025.
The application of Cu‐ and Co‐based mixed oxide (MMOs) catalysts represents an innovative approach for mitigating CO, CH₄, and C₃H₈ emissions from domestic heating systems, offering a cost‐effective alternative to precious metal‐based catalysts. This strategy combines effective emission reduction with economic viability, making it a promising solution ...
Tereza Bílková   +7 more
wiley   +1 more source

Estimating gaseous pollutants in the air near Daura Refinery, Daura Power Plant and South of Baghdad Power Plant by calculating the fuel discharge

open access: yesPrzegląd Naukowy Inżynieria i Kształtowanie Środowiska, 2021
This study addresses estimation of emission rates and concentrations of SO2, CO and NO2 gases emitted from Daura Refinery (DR), Daura Power Plant (DPP) and South of Baghdad Power Plant (SBPP) by calculating the fuel discharge.
Thaer O. Roomi, Adel S. Abed
doaj   +1 more source

Managing complexity in a distributed digital library [PDF]

open access: yes, 1999
As the capabilities of distributed digital libraries increase, managing organizational and software complexity becomes a key issue. How can collections and indexes be updated without impacting queries currently in progress?
Apperley, Mark   +5 more
core   +2 more sources

A Comparative Analysis of Satellite‐Derived CO Retrievals During the 2020 Wildfires in North America

open access: yesJournal of Geophysical Research: Atmospheres, Volume 129, Issue 22, 28 November 2024.
Abstract In September 2020, the Western United States experienced anomalously severe wildfires that resulted in carbon monoxide (CO) emissions almost three times the 2001–2019 average. In this study, we investigate the influence of wildfires on atmospheric carbon monoxide (CO) variability through a comparative analysis of observations from the ...
Heba S. Marey   +6 more
wiley   +1 more source

Cathodic Conversion of Pressurized CO2 at Silver Cathodes: What are the Optimal Values of Pressure and Current Density?

open access: yesChemSusChem, Volume 17, Issue 20, October 21, 2024.
The effect of the pressure (P) and current density (j) on the performances of the pressurized CO2 electrochemical conversion in 0.1 M KHCO3 was explored using Ag cathode. A plot Faradaic efficiency vs P with a maximum was observed. Both the P and j strongly affect the selectivity of the process: the increase of P and the decrease of j favor the CO ...
Federica Proietto   +5 more
wiley   +1 more source

Seasonal Variations of Air Pollutants Concentrations within Baghdad City [PDF]

open access: yesEngineering and Technology Journal, 2019
Air pollution is increased significantly nowadays due to variousindustrial activities and car combustion emissions. In this work, data have beencollected from Al-Jadrya Monitoring Station (JMS).
Layla Alwan, Sedik Al-Hiyaly, Ayat Mahdi
doaj   +1 more source

Electrocatalytic Properties of meso‐ Perfluorinated Metallo Corroles for the Reduction of CO2

open access: yesEuropean Journal of Inorganic Chemistry, Volume 27, Issue 28, October 1, 2024.
We have designed an electron deficient A2B corrole holding two −CF3 groups and a cyanobenzene in the meso positions and its cobalt complex. Our results clearly show that the catalyst when adsorbed on a carbon electrode, shows the most favourable catalytic performance for CO production, achieving an efficiency of 85 % with a current density of −1.5 mA ...
Chanjuan Zhang   +4 more
wiley   +1 more source

Gravitino or Axino Dark Matter with Reheat Temperature as high as $10^{16}$ GeV

open access: yes, 2016
A new scheme for lightest supersymmetric particle (LSP) dark matter is introduced and studied in theories of TeV supersymmetry with a QCD axion, $a$, and a high reheat temperature after inflation, $T_R$. A large overproduction of axinos ($\tilde{a}$) and
Co, Raymond T.   +2 more
core   +1 more source

Earth microbial co-occurrence network reveals interconnection pattern across microbiomes

open access: yesMicrobiome, 2020
Background Microbial interactions shape the structure and function of microbial communities; microbial co-occurrence networks in specific environments have been widely developed to explore these complex systems, but their interconnection pattern across ...
B. Ma   +11 more
semanticscholar   +1 more source

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