Results 91 to 100 of about 7,600 (265)

Stereoretentive Nucleophilic Aromatic Substitution Accesses Atropisomeric 4‐Amino‐N‐Arylquinolinium Salts

Chemistry – A European Journal, EarlyView.
Quinolin‐4‐ones were converted to chloroquinolinium salts, allowing formation of axially chiral aminoquinolinium salts via an enantioretentive SNAr reaction with a variety of amine nucleophiles. The salts have a high rotational barrier, with a racemization half‐life of ∼1000s of years.
Darren Holmes, Nia Foster, Saima Ansari, Paul Kavanagh, Paul Dingwall, Peter C. Knipe   +5 more
wiley   +1 more source

Solitons, Lumps, Breathers, and Interaction Phenomena for a (2+1)-Dimensional Variable-Coefficient Extended Shallow-Water Wave Equation

Mathematics
In this paper, soliton solutions, lump solutions, breather solutions, and lump-solitary wave solutions of a (2+1)-dimensional variable-coefficient extended shallow-water wave (vc-eSWW) equation are obtained based on its bilinear form.
Tianwei Qiu, Zhen Wang, Xiangyu Yang, Guangmei Wei, Fangsen Cui   +4 more
doaj   +1 more source

1-D particle-in-cell simulations of electron acoustic solitary structures in an electron beam-plasma

AIP Advances, 2019
Electrostatic solitary (ES) structures have been frequently observed in the solar wind, Earth’s and other planetary magnetosphere and are the most widely theoretically studied waves in literature.
A. A. Abid, Quanming Lu, M. N. S. Qureshi, X. L. Gao, Huayue Chen, K. H. Shah, Shui Wang   +6 more
doaj   +1 more source

Electron beam driven ion-acoustic solitary waves in plasmas with two kappa-distributed electrons. [PDF]

Sci Rep, 2023
Hatami MM.
europepmc   +1 more source

Modular One‐Pot Access to π‐Expanded Tetrakis(Phenothiazinyl)‐Silanes With Broadly Tunable Redox and Emission Properties

Chemistry – A European Journal, EarlyView.
A library of 21 tetrakis(phenothiazinyl)‐substituted silanes with broadly variable substituent decoration, which are fully reversible multistage redox systems with intense tunable emission from deep blue to yellow–green (441–533 nm), was rapidly synthesized by bromine–lithium exchange/borylation–Suzuki coupling of tetrakis(4‐bromophenyl)silane or by ...
Thomas P. M. Merke, Lysander Presser, Leonard Karl, Christian Ganter, Thomas J. J. Müller   +4 more
wiley   +1 more source

Stability and dispersion relations of three-dimensional solitary waves in trapped Bose–Einstein condensates

New Journal of Physics, 2015
We analyse the dynamical properties of three-dimensional solitary waves in cylindrically trapped Bose–Einstein condensates. Families of solitary waves bifurcate from the planar dark soliton and include the solitonic vortex, the vortex ring and more ...
A Muñoz Mateo, J Brand
doaj   +1 more source

Modulation of internal solitary waves by the Kuroshio in the northern South China Sea. [PDF]

Sci Rep, 2023
Yu Y, Chen X, Cao A, Meng J, Yang X, Liu T.   +5 more
europepmc   +1 more source

π‐Extended Salphen Scaffolds Enable CO2 Electroreduction and Singlet Oxygen Generation

Chemistry – A European Journal, EarlyView.
New family of π‐extended salen ligands bearing phenylene bridge and tunable phenyl‐based substituents, and their corresponding boron difluoride complexes. Thanks to the extended π‐delocalization over the molecule, the ligands themselves show promising results in electrochemical CO2 reduction to CO, while the complexes act as efficient photosensitizers ...
Vincenzo Langellotti, André Korzun, Morgan J. McKee, Massimo Melchiorre, Taegeun Jo, J. Felipe Estrada‐Ruiz, Gregor Schnakenburg, Stefano Crespi, Francesco Ruffo, Nikolay Kornienko, Alessandro Bismuto   +10 more
wiley   +1 more source

Solitary Alfvén Waves

The Astrophysical Journal Letters
We present the solitary Alfvén wave as an ideal nonlinear Alfvénic solution in the solitary far-field limit and construct a 3D numerical model—an Alfvénon.
Zesen Huang, Marco Velli, Chen Shi, Yuliang Ding   +3 more
doaj   +1 more source

Sediment resuspension due to internal solitary waves of elevation in the Messina Strait (Mediterranean Sea). [PDF]

Sci Rep, 2023
La Forgia G, Droghei R, Pierdomenico M, Falco P, Martorelli E, Bergamasco A, Bergamasco A, Falcini F.   +7 more
europepmc   +1 more source