Results 51 to 60 of about 1,922,304 (342)

Kinetics and Mechanism of Mn(II) Catalyzed Periodate Oxidation of p-anisidine: Effect of pH

Bulletin of Chemical Reaction Engineering & Catalysis, 2014
The stoichiometry for the initial part of the reaction, Mn(II) catalysed periodate oxidation of p-anisidine (PMA), has been found to be 1 mol of PMA consuming 2 mol of periodate ion.
Rajneesh Dutt Kaushik, Jaspal Singh, M. Manila, Manmeet Kaur, Prabha Singh   +4 more
doaj   +1 more source

Chaotic mixing induced transitions in reaction-diffusion systems

, 2002
We study the evolution of a localized perturbation in a chemical system with multiple homogeneous steady states, in the presence of stirring by a fluid flow.
Damköhler G. Z., Kolmogorov A., Peter H. Haynes, Tamás Tél, Toroczkai Z., Zoltán Neufeld   +5 more
core   +1 more source

Theory of Solvation-Controlled Reactions in Stimuli-Responsive Nanoreactors [PDF]

, 2015
Metallic nanoparticles embedded in stimuli-responsive polymers can be regarded as nanoreactors since their catalytic activity can be changed within wide limits: the physicochemical properties of the polymer network can be tuned and switched by external ...
Angioletti-Uberti, Stefano, Ballauff, Matthias, Dzubiella, Joachim, Lu, Yan   +3 more
core   +4 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

The Oxidation of 2-(2-Methoxyethoxy)ethanol and 2-(2-Ethoxyethoxy)ethanol by Ditelluratocuprate(III): A Kinetic and Mechanistic Study

Journal of Chemistry, 2013
The oxidation of 2-(2-methoxyethoxy)ethanol (MEE) and 2-(2-ethoxyethoxy)ethanol (EEE) by ditelluratocuprate(III) (DTC) had been studied spectrophotometrically in alkaline medium.
Jin-huan Shan, Yi Li, Shu-ying Huo, Cai-hong Yin   +3 more
doaj   +1 more source

Apparent Reaction Kinetics of Phenol Degradation by High-gravity Intensified Heterogeneous Catalytic Ozonation

Taiyuan Ligong Daxue xuebao, 2022
With spherical Fe-Mn-CuOx/γ-Al2O3 catalyst as the packing of RPB (Rotating Packed Bed), the apparent reaction kinetics of phenol degradation by high gravity intensified heterogeneous catalytic ozonation was investigated under different operating ...
Kechang GAO, Xing LYU, Zhixing LI, Gaomiao REN, Jiaxin JING, Jingwen ZHANG, Youzhi LIU, Weizhou JIAO   +7 more
doaj   +1 more source

Solvent viscosity dependence for enzymatic reactions

, 2008
A mechanism for relationship of solvent viscosity with reaction rate constant at enzyme action is suggested. It is based on fluctuations of electric field in enzyme active site produced by thermally equilibrium rocking (cranckshaft motion) of the rigid ...
A.E. Sitnitsky, Agarwal, Agarwal, Antoniou, Barshtein, Beece, Brunne, Buck, Cantor, Carter, Chandrasekhar, Chaudhuri, Chaudhuri, Clore, Dellwo, Demchenco, Doster, Doster, Doster, Déméné, Fadel, Fitzgerald, Flytzanis, Frauenfelder, Frauenfelder, Frauenfelder, Frauenfelder, Fröhlich, Fröhlich, Gavish, Gavish, Gavish, Gavish, Gavish, Go, Grote, Heer, Hänggi, Juanico, Jung, Kleinert, Klüner, Lehmann, Levitt, Levy, McCammon, Metiu, Ng, Ng, Olsson, Olsson, Pabit, Palmer, Rosskyt, Rubin, Ryvkine, Sitnitsky, Sitnitsky, Sitnitsky, Sitnitsky, Sitnitsky, Sitnitsky, Smelyanskiy, Ulmer, van Gunsterent, Warshel, Warshel, Warshel, Yedgar, Zwanzig   +69 more
core   +1 more source

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

FEBS 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

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

FEBS 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, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Evaluation of Front Morphological Development of Reactive Solute Transport Using Behavior Diagrams

Terrestrial, Atmospheric and Oceanic Sciences, 2009
While flowing through porous medium, ground water flow dissolves minerals thereby in creasing medium porosity and ultimately permeability. Reactive fluid flows preferentially into highly permeable zones, which are therefore dissolved most rapidly ...
Jui-Sheng Chen, Yuan-Yao Chang, Chen-Wuing Liu   +2 more
doaj   +1 more source