Results 11 to 20 of about 513,877 (318)

A fast stratospheric chemistry solver: the E4CHEM submodel for the atmospheric chemistry global circulation model EMAC [PDF]

open access: yesGeoscientific Model Development, 2010
The atmospheric chemistry general circulation model ECHAM5/MESSy (EMAC) and the atmospheric chemistry box model CAABA are extended by a computationally very efficient submodel for atmospheric chemistry, E4CHEM.
A. J. G. Baumgaertner   +4 more
doaj   +4 more sources

Chemistry of solvents in brown coal liquefaction: Estimation of steady state recycle solvent quality

open access: closedFuel Processing Technology, 1986
Abstract A convenient method to evaluate equilibrated recycle solvent qualities and liquefaction yields at steady state for the Morwell brown coal liquefaction process with solvent recycle has been studied. At first, three principal solvent quality factors have effects on yield patterns; these are: amount of transferable hydrogen, heavy phenolic ...
M. AIURA   +3 more
openalex   +3 more sources

Observations of total peroxy nitrates and aldehydes: measurement interpretation and inference of OH radical concentrations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2007
We describe measurements of total peroxy nitrates (ΣPNs), NO2, O3 and several aldehydes at Granite Bay, California, during the Chemistry and Transport of the Sacramento Urban Plume-2001 (CATSUP 2001) campaign, from 19 July–16 September 2001 ...
P. A. Cleary   +10 more
doaj   +2 more sources

Multiple Transients in the Pre-Steady-State of Nucleoside Hydrolase Reveal Complex Substrate Binding, Product Base Release, and Two Apparent Rates of Chemistry [PDF]

open access: closedBiochemistry, 2006
We have investigated the transient kinetics of the nucleoside hydrolase from Trypanosoma vivax (TvNH) at low temperatures (5 degrees C). Three novel absorbance transients (termed tau1, tau3, and tau4) were detected during multiple-guanosine turnover stopped-flow absorbance spectroscopy, in addition to a transient (tau2) that had been observed ...
An Vandemeulebroucke   +3 more
openalex   +5 more sources

Interpretation of NO3–N2O5 observation via steady state in high-aerosol air mass: the impact of equilibrium coefficient in ambient conditions [PDF]

open access: yesAtmospheric Chemistry and Physics, 2022
Steady-state approximation for interpreting NO3 and N2O5 has large uncertainty under complicated ambient conditions and could even produce incorrect results unconsciously.
X. Chen, H. Wang, H. Wang, K. Lu, K. Lu
doaj   +1 more source

Reciprocal Sum Expression for Steady-state Kinetics —Enzyme Reactions and Voltammetry—

open access: yesElectrochemistry, 2022
Steady-state experiments are often conducted to understand complicated cases in chemistry, since the kinetics does not have a time valuable and allows simple modeling of the reactions.
Yuko YOKOYAMA   +4 more
doaj   +1 more source

Impact of High Methane Flux on the Properties of Pore Fluid and Methane-Derived Authigenic Carbonate in the ARAON Mounds, Chukchi Sea

open access: yesFrontiers in Marine Science, 2022
We investigated the pore fluid and methane-derived authigenic carbonate (MDAC) chemistry from the ARAON Mounds in the Chukchi Sea to reveal how methane (CH4) seepage impacts their compositional and isotopic properties.
Ji-Hoon Kim   +15 more
doaj   +1 more source

The atmospheric chemistry box model CAABA/MECCA-3.0 [PDF]

open access: yesGeoscientific Model Development, 2011
We present version 3.0 of the atmospheric chemistry box model CAABA/MECCA. In addition to a complete update of the rate coefficients to the most recent recommendations, a number of new features have been added: chemistry in multiple aerosol size bins;
R. Sander   +12 more
doaj   +1 more source

Numerical Simulations of Heat Loss Effect on Premixed Jet Flame Using Flamelet Generated Manifold Combustion Model

open access: yesEnergies, 2022
Numerical simulations are performed on a combustor setup which represents the recirculating behaviour of a combustor in the flameless combustion regime. Previous experimental and numerical studies showed that heat loss is prominent for this setup.
Jesse W. Hofsteenge   +2 more
doaj   +1 more source

Dramatic effect of fluid chemistry on cornstarch suspensions: linking particle interactions to macroscopic rheology [PDF]

open access: yes, 2017
Suspensions of cornstarch in water exhibit strong dynamic shear-thickening. We show that partly replacing water by ethanol strongly alters the suspension rheology.
de Beer, Sissi   +3 more
core   +13 more sources

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