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Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
PL Artykuł zawiera krótkie omówienie fizycznych podstaw zjawiska jądrowego rezonansu magnetycznego. Możliwość nieinwazyjnego badania np. prądu elektryzacji przy obserwacji tego zjawiska oraz fakt, iż jest ono wykorzystywane w szerokim spektrum zastosowań (również w medycynie) dało impuls do podjęcia pr[...]
EN The paper contains short presentation of the physical backgrounds nuclear spin magnetic resonance. The opportunity of non-destructive examination of the exclusive parameters e.g. current of electrisation with observation this phenomena and the fact that it is already applied with the great spectrum [...]
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Elektronika : konstrukcje, technologie, zastosowania
PL Artykuł przedstawia laboratorium technik rezonansu magnetycznego (NMR) w którym prowadzone są badania magnetyzacji układów spinowych, w szczególności badania mechanizmów indukowania i utrzymywania wysokich stopni polaryzacji spinowej zwanej hiperpolaryzacją i dotyczy próbek stałych (13C, [...]
EN This paper presents a magnetic resonance laboratory (NMR) where magnetization of spin systems is studied, in particular development of robust strategies for inducing and maintaining a high nuclear spin polarization levels called hyperpolarization either solid (13C, 29Si) or gas[...]
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Nafta-Gaz
2011 R. 67, nr 9 619-626
PL W pracy przedstawiono wyniki badań laboratoryjnych przeprowadzonych na rdzeniach wiertniczych pochodzących z różnych facji utworów górnego czerwonego spągowca z rejonu na północ i północny-zachód od Poznania, w celu oceny nasycenia ich przestrzeni porowej. Wyniki otrzymano na podstawie danych uzyska[...]
EN The study presents results of laboratory examinations carried out on drill cores originating from various facies of Upper Rotliegend from a region to the North and North-West of Poznań, aimed at evaluation of their pore space saturation. The results were obtained on the basis of data acquired with N[...]
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Postępy Techniki Przetwórstwa Spożywczego
2017 Nr 2 20--26
PL Celem prac przedstawionych w artykule jest analiza wpływu odwadniania osmotycznego (OD) na wymianę masy w jabłkach. W celu określenia zmian w strukturze oraz żywotności komórek użyto jądrowego rezonansu magnetycznego (NMR) oraz mikroskopu fluorescencyjnego. Odwadnianie osmotyczne prowadzono w roztwo[...]
EN The aim of this work presented in the paper is to analysis of the influence of osmotic dehydration (OD) on mass transfer in apples. Fluorescence microscopy and time domain nuclear magnetic resonance (NMR) were respectively used to evaluate cell viability and microstructural changes during osmotic de[...]
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Wiadomości Chemiczne
2005 [Z] 59, 1-2 93--106
EN The dynamic NMR (DNMR) deals with different techniques for rate constant determination for different chemical processes. The complete band shape analysis is applicable to the study of processes occurring with rate constants between 1 and 104 s-1. The measurements of relaxation [...]
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TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
2014 Vol. 18, No 4 343--349
EN We examined the effect of like-charged residues on the conformation of an original nine amino-acid-residue fragment of the human Pin1 WW domain (hPin1) with the f ollowing sequence: Ac-Arg-Met-Ser-Arg-Ser-Ser-Gly-Arg-Val-NH 2 (U9). This was facilitated by CD and NMR spectroscopic measurements, and m[...]
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Environment Protection Engineering
EN Quaternary ammonium salts (QASs) such as 1-methyl-di-nonyl-1 phenyl ammonium iodide (QAS1) and 1-methyl-di-dodecyl-1 phenyl ammonium iodide (QAS2) were newly synthesized by complete alkylation reaction for modification of sodium montmorillonite (Mt). The sodium montmorillonite [...]
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Challenges of Modern Technology
EN Clathrate hydrates are icelike structures in which water molecules form cavities enclathrating many possible types of guest molecules. Among most important representatives of this group of solid structures are methane and carbon dioxide clathrate hydrates. The first one is widely present in Nature a[...]
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Polish Journal of Chemistry
2007 Vol. 81, nr 12 2089-2096
EN 1H NMR and 13C NMR spectra of salicylaldehyde potassium salt in DMF-d7 solution with addition of kryptofix 222 were mea sured. Quantitative comparison of car bon chemical shifts with shielding constants calculated for syn and anti con form ers of salicyl aldehyde an ion [GIAO DFT B3LYP/6-311G(2d,p) [...]
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Polish Journal of Chemistry
2008 Vol. 82, nr 10 1905-1910
EN Both one dimensional 2H MAS NMR and two dimensional (EXSY) NMR were used to study lanthanum sub-stoichiometric trideuteride (LaD2.85) at room temperature. Re mark - ably narrow (8 and 10 Hz) intense lines were observed at 3.06 and 2.97 ppm in addition to two additional (31 and 35 Hz wide) at 2.62 an[...]
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Polish Journal of Chemistry
2007 Vol. 81, nr 8 1449-1455
EN 1H and13C NMR spectra of 2-acylcyclopentane-1,3-dione [acyl = formyl (1); acetyl (2)] and 2,6-dioxocyclohexanecarboxylic acid (3) have beenmeasured. The optimummolecular structures of endo- and exo-enolic forms of investigated objects in solution have been found using DFT method with B3LYP functiona[...]
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Polish Journal of Chemistry
2001 Vol. 75, nr 12 1839-1846
EN A series of para-substituted azoxybenzenes was obtained as model compounds for the investigation on the mechanism of Wallach rearrangement. Oxidation of azobenzenes with hydrogen peroxide in acetic acid solution, provided mixtures of alfa and beta isomers. Some couples of the products were separated[...]
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Polish Journal of Chemistry
2007 Vol. 81, nr 7 1321-1326
EN In addition to well-known complexes of tetraethyl p-tert-butylcalix[4]arene tetraacetate (abbrev. 1) with alkali metal cations, an equimolar complex of this compound with H3O+, i.e. 1źH3O+, was found to be formed slowly in acetonitrile, however, with a very high equilibrium constant, the value ofwhi[...]
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Nafta-Gaz
PL W artykule przedstawiono nowe możliwości oceny zbiornikowych właściwości skał, w tym zawartości wody związanej (nieredukowalnej), kapilarnej i wolnej w próbkach skal, przy wykorzystaniu jądrowego rezonansu magnetycznego NMR. Zaprezentowano wyniki badań przeprowadzonych na rdzeniach wiertniczych z re[...]
EN The paper presents some new possibilities to estimate reservoir properties of rocks, including content of bound (irreducible), capillary, and gravitational waters in rock samples, using nuclear magnetic resonance. Results of tests on cores from Carpathian Foredeep, Carpathians, and Polish Lowlands a[...]
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Polish Journal of Chemistry
EN Complexes of ZnX2 (X=Cl, Br, I, SCN) with 5,7-dimethyl-1,2,4-triazolo-[1,5a]-pyrimidine, 5,7-diphenyl-1,2,4-triazolo-[1,5a]-pyrimidine and 5,7-di-tert-butyl-1,2,4-triazolo-[1,5a]-pyrimidine were prepared and characterized by IR (100-4000 cm-1) and 1H, 13C, 15N NMR spectroscopies. Spectral data sugge[...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN Two methods of (29) Si NMR calculations, GIAO-HF and GIAO-B3LYP /6-311+G(2d,p) were compared for a series of simple silicon compounds. The (29) Si isotropic chemical shifts obtained by both methods are in reasonable agreement with the experi-ment, although the GIAO-HF method predicts the chemical sh[...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN Following coupling constants for Hg(CN)2 in DMSO solution have been measured: 1J(13C-199Hg), 1 J(13C-15N), 2 J (199Hg-15N). The longitudinal (13)C and (15)N relaxation times and transverse (13(C relaxation times at two magnetic fields, and additionally the longitudinal (199)Hg relaxation time for 13[...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN (1)H, (13)C, (14)N, (15)N, (17)0, and (19)F NMR data are presented for HTFMQ and its complexes with DMAN in 2 .land 1 : 1 molar ratios. GIAO-CHF molecular orbital calculations for the [1H] and [4H] forms of the free molecule and its anion are also performed. The results show that the [4H] form of HT[...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN Derivation of scalar couplings and their applications as structural constraints used in the determination of high resolution protein structures from nuclear magnetic resonance data is discussed.
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Bulletin of the Polish Academy of Sciences. Chemistry
EN Representative examples of large-amplitude dynamic phenomena in various classes of solid metallorganic compounds are presented. The application of X-ray diffraction measurements and variable-temperature high-resolution NMR spectroscopy for in-vestigation of these motions is described. Advantages and[...]
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