Results 31 to 40 of about 11,302,873 (322)

Controlling Substrate Binding to Fe4S4 Clusters through Remote Steric Effects.

open access: yesInorganic Chemistry, 2019
The extraordinary reactivity exhibited by many Fe-S enzymes is due in large part to the influence of the protein scaffold on substrate binding and activation.
Alexandra C. Brown, D. Suess
semanticscholar   +1 more source

Site-Selective C–H Functionalization by Decatungstate Anion Photocatalysis: Synergistic Control by Polar and Steric Effects Expands the Reaction Scope

open access: yes, 2018
The synergistic control of the SH2 transition states of hydrogen abstraction by polar and steric effects provides a promising strategy in achieving site-selective C(sp3)–H functionalization under decatungstate anion photocatalysis.
Davide Ravelli   +4 more
semanticscholar   +1 more source

Sea-level trend variability in the Mediterranean during the 1993–2019 period

open access: yesFrontiers in Marine Science, 2023
Sea-level change is one of the most concerning climate change and global warming consequences, especially impacting coastal societies and environments. The spatial and temporal variability of sea level is neither linear nor globally uniform, especially ...
Matteo Meli   +5 more
doaj   +1 more source

Poisson-Nernst-Planck equations with steric effects - non-convexity and multiple stationary solutions

open access: yes, 2017
We study the existence and stability of stationary solutions of Poisson-Nernst- Planck equations with steric effects (PNP-steric equations) with two counter-charged species.
Gavish, Nir
core   +1 more source

Breaking Trade‐Off between Selectivity and Activity of Nickel‐Based Hydrogenation Catalysts by Tuning Both Steric Effect and d‐Band Center

open access: yesAdvanced Science, 2019
For selective hydrogenation of chemicals the high selectivity is always at the expense of activity and improving both selectivity and activity is challenging.
Ruijie Gao   +6 more
doaj   +1 more source

Multiple solutions of steady-state Poisson-Nernst-Planck equations with steric effects

open access: yes, 2014
Experiments measuring currents through single protein channels show unstable currents. Channels switch between 'open' or 'closed' states in a spontaneous stochastic process called gating.
Eisenberg, Bob, Lin, Tai-Chia
core   +1 more source

Analytical interfacial layer model for the capacitance and electrokinetics of charged aqueous interfaces [PDF]

open access: yes, 2018
We construct an analytical model to account for the influence of the subnanometer-wide interfacial layer on the differential capacitance and the electro-osmotic mobility of solid–electrolyte interfaces.
Bonthuis, Douwe Jan   +2 more
core   +2 more sources

Transmission of dipolar substituent effects: ionization of a series 3-(7-substituted-1-naphthyl) propynoic acid (E)-3-(7-substituted-1-naphthyl) propenoic acids and their Esterification with Diazodiphenylmethane

open access: yesAl-Kitab Journal for Pure Sciences, 2023
Alkaline hydrolysis rates coefficients for the series of methyl 3-(7-substituted-1-naphthyl) propynoate was calculated in 70%v/v dimethylsulphoxide-water at various temperatures (25,30,40, and 50̊ C).
Khalaf D. F. Ghadir   +3 more
doaj   +1 more source

Steric Effects in Electrolytes: A Modified Poisson-Boltzmann Equation

open access: yes, 1998
The adsorption of large ions from solution to a charged surface is investigated theoretically. A generalized Poisson--Boltzmann equation, which takes into account the finite size of the ions is presented.
A. G. Volkov   +19 more
core   +1 more source

Poisson-Fermi Formulation of Nonlocal Electrostatics in Electrolyte Solutions

open access: yesComputational and Mathematical Biophysics, 2017
We present a nonlocal electrostatic formulation of nonuniform ions and water molecules with interstitial voids that uses a Fermi-like distribution to account for steric and correlation efects in electrolyte solutions.
Liu Jinn-Liang   +2 more
doaj   +1 more source

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