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Mathematische Annalen - We prove that every non-trivial structure of a rationally connected fibre space on a generic (in the sense of Zariski topology) hypersurface V of degree M in the $$(M+1)$$... 相似文献
433.
This work shows how to measure composer style's comprehensiveness by performing measurements on Barlow and Morgenstern dictionary of 10, 000 classical themes. This measure can partially reveal the degree of complexity of works by Mozart as well as many greater composers. © 2015 Wiley Periodicals, Inc. Complexity 21: 263–268, 2016 相似文献
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We investigate the validity of the Mean Ergodic Theorem in symmetric Banach function spaces E. The assertion of that theorem always holds when E is separable, whereas the situation is more delicate when E is non-separable. To describe positive results in the latter setting, we use the connections with the theory of singular traces. 相似文献
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Erik Saparbaev Vladimir Kopysov Ruslan Yamaletdinov Aleksandr Y. Pereverzev Oleg V. Boyarkin 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(22):7424-7428
The tremendous isomeric diversity of carbohydrates enables a wide range of their biological functions but makes the identification and study of these molecules difficult. We investigated the ability of intermolecular interactions to communicate structural specificity of carbohydrates to protonated aromatic molecules in non‐covalent complexes, isolated and cooled in the gas phase. Our study revealed that small structural differences between carbohydrate isomers of any type, including enantiomers, are accurately communicated by these interactions to aromatic molecules as detectable changes in their electronic excitation spectra. The specific response of the aromatics to the isomers of carbohydrates is fine‐tuned by the interplay of the various involved non‐covalent bonds. These findings enable the gas‐phase identification and relative quantification of any isomers of oligosaccharides in their solution mixtures using the 2D UV‐MS fingerprinting technique. 相似文献
438.
Shalimov Aleksandr A. Kolotylo Mykola V. Babiy Lyubov V. Muzychka Oksana V. Onys’ko Petro P. Rozhkov Vladimir V. 《Chemistry of Heterocyclic Compounds》2018,54(11):1033-1039
Chemistry of Heterocyclic Compounds - A convenient methodology for the synthesis of previously unreported (1H-indol-6-yl)phosphonic acid derivatives has been described. Reaction of... 相似文献
439.
Plausinaitis Deivis Knasiene Birute Prokopchik Aleksandr Naujalis Evaldas Vicent Claramunt Adrián 《Journal of Radioanalytical and Nuclear Chemistry》2018,316(1):257-265
Journal of Radioanalytical and Nuclear Chemistry - A simple method for the simultaneous detection of stable and long-lived Mn, Ni, Co and Cu isotopes has been created by coupling an ion... 相似文献
440.
Andrei A. Tolmachev Sergei I. Dovgopoly Aleksandr N. Kostyuk Ernest S. Kozlov Aleksei O. Pushechnikov Wolfgang Holzer 《Heteroatom Chemistry》1999,10(5):391-398
1,3,3‐Trimethyl‐2‐(1‐R‐3‐methyl‐5‐pyrazolyliminoethylidene)indolines were shown to undergo phosphorylation with phosphorus(III) halides at the two nucleophilic carbon centers to give fused 1,4‐azaphosphinine ring systems. Chemical properties of the synthesized compounds were characterized. For some representative compounds, detailed NMR spectroscopic investigations were performed, including the determination of 31P, 1H and 31P, 13C coupling constants. © 1999 John Wiley & Sons, Inc. Heteroatom Chem 10: 391–398, 1999 相似文献