Results 61 to 70 of about 6,557,444 (383)

Stochastic Resonance in an Extended FitzHugh-Nagumo System: the Role of Selective Coupling [PDF]

, 2006
Here we present a study of stochastic resonance in an extended FitzHugh-Nagumo system with a field dependent activator diffusion. We show that the system response (here measured through the output signal-to-noise ratio) is enhanced due to the particular ...
Bezrukov, Bouzat, Bulsara, Castelpoggi, Castelpoggi, Castelpoggi, Claudio J. Tessone, Collins, Dayan, Douglas, Drazer, Förster, Gammaitoni, Gammaitoni, García-Ojalvo, Goychuk, Graham, Graham, Graham, Guderian, Hohmann, Horacio S. Wio, Izús, Izús, Jung, Jung, Jung, Lindner, Lindner, Lindner, McNamara, Mikhailov, Pikovsky, San Miguel, Schimansky-Geier, Schmid, Schmid, Tessone, Toral, von Haeften, von Haeften, Wio, Wio, Wio, Wio, Zanette   +45 more
core   +2 more sources

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Mechanistic Implications for the Ni(I)-Catalyzed Kumada Cross-Coupling Reaction

Inorganics, 2017
Herein we report on the cross-coupling reaction of phenylmagnesium bromide with aryl halides using the well-defined tetrahedral Ni(I) complex, [(Triphos)NiICl] (Triphos = 1,1,1-tris(diphenylphosphinomethyl)ethane).
Linda Iffland, Anette Petuker, Maurice van Gastel, Ulf-Peter Apfel   +3 more
doaj   +1 more source

Communication: Resonance reaction in diffusion-influenced bimolecular reactions [PDF]

, 2016
We investigate the influence of a stochastically fluctuating step-barrier potential on bimolecular reaction rates by exact analytical theory and stochastic simulations.
Angioletti-Uberti, S, Dzubiella, J, Kolb, JJ   +2 more
core   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Photoinduced Copper‐Catalyzed Cross‐Coupling of Acylsilanes with Heteroarenes via Bimetallic Relay

Advanced Science
The transition metal‐catalyzed direct coupling reactions involving electron‐rich Fischer carbene species are largely underdeveloped and remain a big challenge.
Long Zheng, Ying‐Chao Li, Yichen Wu, Peng Wang   +3 more
doaj   +1 more source

A concise synthesis of 3-(1-alkenyl)isoindolin-1-ones and 5-(1-alkenyl)pyrrol-2-ones by the intermolecular coupling reactions of N-acyliminium ions with unactivated olefins

Beilstein Journal of Organic Chemistry, 2012
A concise synthesis of 3-(1-alkenyl)isoindolin-1-ones and 5-(1-alkenyl)pyrrol-2-ones has been achieved by the coupling reactions of N-acyliminium ions produced from 3-hydroxyisoindol-1-ones or 5-hydroxy-1-pyrrol-2-ones with unactivated olefins in the ...
Nianhong Lu, Lihong Wang, Zhanshan Li, Wei Zhang   +3 more
doaj   +1 more source

Porous Organic Polymer Synthesized by Green Diazo-Coupling Reaction for Adsorptive Removal of Methylene Blue [PDF]

, 2021
Yang Shen, Wenxin Ni, Bing Li
openalex   +1 more source

Scope and Mechanistic Study of the Coupling Reaction of α,β-Unsaturated Carbonyl Compounds with Alkenes: Uncovering Electronic Effects on Alkene Insertion vs Oxidative Coupling Pathways [PDF]

, 2012
The cationic ruthenium-hydride complex [(C6H6)(PCy3)(CO)RuH]+BF4– (1) was found to be a highly effective catalyst for the intermolecular conjugate addition of simple alkenes to α,β-unsaturated carbonyl compounds to give (Z)-selective tetrasubstituted ...
Ackermann L., Ackermann L., Ackermann L., Ackermann L., Anastas P. T., Anastas P. T., Anslyn E. V., Arai T., Beccalli E. M., Berlin J. M., Bernasconi C. F., Chae S. Yi, Colby D. A., Colby D. A., Cristau H.-J., Do W. Lee, Donohoe T. J., Engle K. M., Flynn A. B., Foley N. A., Frantz D. E., Gansäuer A., Gao H., Giri R., Giri R., Guo L.-N., Hartwig J. F., Ho C.-Y., Hojo D., Huang C., Isaacs N. S., Itami K., Jun C.-H., Kakiuchi F., Kakiuchi F., Kakiuchi F., Ki-Hyeok Kwon, Kwon K.-H., Kwon K.-H., Lee D. W., Lee D.-H., Lemay A. B., Liu L., Lu Y., Maryanoff B. E., Matsubara R., Matsuura Y., McKinley N. F., Negishi E., Ni Y., Ogoshi S., Oh H. K., Park S. H., Patureau F. W., Patureau F. W., Patureau F. W., Pintori D. G., Rakshit S., Rakshit S., Sato T., Sheldon R. A., Shen Y., Shi B.-F., Singleton D. A., Stenne B., Strohfeldt K., Stuart D. R., Stuart D. R., Stuart D. R., Su Y., Tang J.-M., Trost B. M., Tsai A. S., Ueyama T., Umeda N., Vorfalt T., Wang F., Wasa M., Wasa M., Weissman H., Weston M. H., Ye M., Yi C. S., Yi C. S., Yokota T., Yu M., Zhang Y.-H., Zhao C., Zhou C., Zhou C., Zhu C.   +90 more
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source