Results 31 to 40 of about 1,229,001 (201)

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Simulation of weak polyelectrolytes: A comparison between the constant pH and the reaction ensemble method

open access: yes, 2017
The reaction ensemble and the constant pH method are well-known chemical equilibrium approaches to simulate protonation and deprotonation reactions in classical molecular dynamics and Monte Carlo simulations.
Holm, Christian   +2 more
core   +1 more source

MOLECULAR DYNAMICS OF CHEMICAL REACTIONS [PDF]

open access: yesPure and Applied Chemistry, 1976
Abstract Molecular beam and spectroscopic techniques allow detailed study of many dynamical properties of single reactive collisions. The chemical scope of these methods is now very wide and includes certain unimolecular and termolecular reactions as well as bimolecular reactions and energy transfer processes. Results for more than 50 families of A +
openaire   +1 more source

The reaction dynamics of sodium with ozone [PDF]

open access: yesThe Journal of Chemical Physics, 1992
The reaction of sodium atoms (Na) with ozone (O3) has been studied using crossed molecular beams at a collision energy of 18 kcal/mole. The only product observed was NaO. The reaction occurs via an electron-transfer mechanism that yields NaO which is forward scattered with respect to the sodium beam. The translational energy distribution peaks near the
Covinsky, Michael H.   +3 more
openaire   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Biscale Chaos in Propagating Fronts

open access: yes, 1996
The propagating chemical fronts found in cubic autocatalytic reaction-diffusion processes are studied. Simulations of the reaction-diffusion equation near to and far from the onset of the front instability are performed and the structure and dynamics of ...
A. Arneodo   +21 more
core   +1 more source

Nonlinear reaction with fractional dynamics [PDF]

open access: yesApplied Mathematics and Computation, 2006
13 pages, 5 ...
openaire   +3 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Mesoscopic Model for Diffusion-Influenced Reaction Dynamics

open access: yes, 2003
A hybrid mesoscopic multi-particle collision model is used to study diffusion-influenced reaction kinetics. The mesoscopic particle dynamics conserves mass, momentum and energy so that hydrodynamic effects are fully taken into account.
Kapral R.   +5 more
core   +1 more source

Complexity of the dynamics of reaction systems

open access: yesInformation and Computation, 2019
Preprint
Dennunzio, A   +3 more
openaire   +7 more sources

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