Výsledky vyhledávání - "Andrzej J. Kałka"

Searching for Alternatives to the Savitzky–Golay Filter in the Spectral Processing Domain

Autor: Andrzej J. Kałka, Andrzej M. Turek

Publikováno v: Applied Spectroscopy. 77:426-432

An elegant, well-established effective data filter concept, proposed originally by Abraham Savitzky and Marcel J.E. Golay, is undoubtedly a very effective tool, however not free from limitations and drawbacks. Despite the latter, over the years it ha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df8b881657fdd76d21aa2d0aec292aee
https://doi.org/10.1177/00037028231154278

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Do Spectra Live in the Matrix? A Brief Tutorial on Applications of Factor Analysis to Resolving Spectral Datasets of Mixtures

Autor: Andrzej J. Kałka, Andrzej M. Turek

Publikováno v: Journal of Fluorescence

Graphical abstract In spite of a rapid growth of data processing software, that has allowed for a huge advancement in many fields of chemistry, some research issues still remain problematic. A standard example of a troublesome challenge is the analys

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b71f48dfd65c5730229d91c366c882
http://europepmc.org/articles/PMC8547214

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Unravelling the nature of a toluene-fumaronitrile complex

Autor: Mateusz Z. Brela, Andrzej M. Turek, Andrzej J. Kałka

Publikováno v: Physical chemistry chemical physics : PCCP. 23(30)

In this research, the occurrence and anomalous increase of an additional absorption band observed in the spectrum of fumaronitrile dissolved in toluene are explained and characterized. The formation of a stable ground-state complex between these two

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b73a7891836ef515e80ca96d0ee8c942
https://pubmed.ncbi.nlm.nih.gov/34296231

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Compensation of temperature effects on spectra through evolutionary rank analysis

Autor: Andrzej M. Turek, Andrzej J. Kałka

Publikováno v: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 245

Spectra measured in various ranges of temperature are usually slightly different from each other in shape and position of the bands. Although the displayed inconsistencies are rather small, yet may lead to incorrect analysis and interpretation of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4e7c0618873779c65a59b8195342700
https://pubmed.ncbi.nlm.nih.gov/32956931

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Intermolecular interactions of tetracyanoethylene (TCNE) and fumaronitrile (FN) with minor amines: A combined UV–Vis and EPR study

Autor: Andrzej J. Kałka, Bartosz Mozgawa, Piotr Pietrzyk, Andrzej M. Turek

Publikováno v: The Journal of Chemical Physics. 156:094301

In this paper, the nature of interactions between two cyanocarbons—tetracyanoethylene (TCNE) and fumaronitrile (FN)—and a series of four secondary amines possessing a general formula C4HxN (x = 5–11) is thoroughly scrutinized. For all of the TC

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74b6471669708dc653e1e10a8a0bbd17
https://doi.org/10.1063/5.0084088

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Fast decomposition of three-component spectra of fluorescence quenching by white and grey methods of data modeling

Autor: Andrzej M. Turek, Andrzej J. Kałka

'White' and 'grey' methods of data modeling have been employed to resolve the heterogeneous fluorescence from a fluorophore mixture of 9-cyanoanthracene (CNA), 10-chloro-9-cyanoanthracene (ClCNA) and 9,10-dicyanoanthracene (DCNA) into component indiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68943e0aca42deaaa5e444bac0a5229a
https://ruj.uj.edu.pl/xmlui/handle/item/63037

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