Results 31 to 40 of about 368,288 (339)
Beilstein Journal of Organic Chemistry, 2016 An improved and greener protocol for the synthesis of benzimidazole derivatives, starting from o-phenylenediamine, with different aldehydes is reported. Double-condensation products were selectively obtained when Er(OTf)3 was used as the catalyst in the ...
Natividad Herrera Cano +5 more
doaj +1 more source
Condensate Heating by Atomic Losses [PDF]
, 2003 Atomic Bose-Einstein condensate is heated by atomic losses. Predicted depletion ranges from 1% for a uniform 3D condensate to around 10% for a quasi-1D condensate in a harmonic trap.
arxiv +1 more source
Synthesis of [(4-Chloro-5H-1,2,3-dithiazol-5-ylidene)amino]azines
Molecules, 2011 The reactions of 2-, 3- and 4-aminopyridines with 4,5-dichloro-1,2,3-dithiazol-ium chloride (Appel salt) 4 to give N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)pyridin-X-amines 1a (X = 2), 1g (X = 3) and 1k (X = 4) were optimized with respect to base ...
Panayiotis A. Koutentis +2 more
doaj +1 more source
Phase separation of Bose-Einstein condensates [PDF]
, 1997 The zero-temperature system of two dilute overlapping Bose-Einstein condensates is unstable against long wavelength excitations if the interaction strength between the distinguishable bosons exceeds the geometric mean of the like-boson interaction strengths.
arxiv +1 more source
Thermodynamic factor and vacuum crystallization
Foods and Raw Materials, 2022 Sucrose crystallization depends on various thermal phenomena, which makes them an important scientific issue for the sugar industry. However, the rationale and theory of sucrose crystallization still remain understudied.
Evgeniy V. Semenov +3 more
doaj +1 more source
To condense, or not to condense, that is the question
Journal of Physics: Conference Series, 2014 Recent key experimental results on the spectroscopy of 12C have been made, which, when taken together, provide much needed clarity on the structure of the ground- and Hoyle- state excitations and provided new avenues for future research. High excitation energies in light nuclei are being explored with evermore precision and recent examples of this in ...
openaire +2 more sources
Molecular Oncology, EarlyView.This article advocates integrating temporal dynamics into cancer research. Rather than relying on static snapshots, researchers should increasingly consider adopting dynamic methods—such as live imaging, temporal omics, and liquid biopsies—to track how tumors evolve over time.
Gautier Follain +3 more
wiley +1 more source
Molecules, 2018 Two camptothecin derivatives, 10-cyclohexyl-7-methyl-20(S)-camptothecin and 7-methyl-10-morpholino-20(S)-camptothecin, were synthesized and their differences in solubility were investigated using four chosen solvent systems.
Chin-Hung Lai +3 more
doaj +1 more source