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51.
ABSTRACT Revealing molecular alterations induced on kiwifruit under UV-Vis irradiation requires a discussion of biochemical-cell infrared (IR) fingerprint (900 cm?1–1800 cm?1) bands characteristic of nucleic acids. FTIR-ATR spectroscopy and statistics and nondestructive methods for screening exposure effects induced by irradiation were used. There the irradiation influence on the main molecular bonds (i.e., ν(C-C), νs(PO2?) and νas(PO2?)) can be observed. Regression methods were used for statistical investigations. Two categories of variables were used: the absorbance measured at fixed wavenumber variables and the exposure dose. The bivariate correlations, partial correlations, and polynomial regression methods from SPSS were used for statistical investigations. The obtained results show that FTIR-ATR, in correlation with statistics techniques, might be useful to assess immediate radiation and oxidative-induced damage to nucleic acids. In this case IR spectroscopy can be used successfully to study conformational changes during DNA reversible denaturation especially on the sugar-phosphate vibrations domain. 相似文献
52.
Stan Stelian Chisamera Mihai Riposan Iulian Stefan Eduard Neacsu Loredana Cojocaru Ana Maria Stan Iuliana 《Journal of Thermal Analysis and Calorimetry》2019,138(4):2529-2540
Journal of Thermal Analysis and Calorimetry - Simultaneous thermal and contraction/expansion analysis of hypoeutectic grey (lamellar graphite) and ductile (nodular graphite) cast irons... 相似文献
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Dissolution of Cellulose and Lignin with Biobased Ionic Liquids 总被引:1,自引:0,他引:1
Mbakidi Jean-Pierre Kerkache Asma Lazar Florica Bouquillon Sandrine 《Journal of solution chemistry》2022,51(3):345-356
Journal of Solution Chemistry - Choline-based ionic liquids, involving various alkyl chains lengths and carboxylates derived from biobased acids, have been synthetized with high yields through a... 相似文献
55.
Allam L. Lazar F. Benfedda B. Chopart J. P. 《Journal of Solid State Electrochemistry》2021,25(7):2041-2053
Journal of Solid State Electrochemistry - Zinc-manganese alloy coatings were electrodeposited using sulfate baths in the presence of a superimposed magnetic field up to 1 T parallel to the... 相似文献
56.
Two triphenylamine-based polymers were successfully prepared by the interfacial and microemulsion oxidative polymerization of triphenylamine and 4-(diphenylamino)benzyl 2-bromo-2-methylpropanoate. Ammonium peroxodisulfate ((NH4)2S2O8) was used as a chemical oxidant and dichloromethane/water was used as a solvent. Sodium dodecyl benzene sulfonate was employed as a surfactant in the microemulsion system. Polytriphenylamines were characterized via Fourier transform infrared (FTIR) spectra and 1H-NMR and UV–vis absorption spectroscopy. Molecular weights were determined by gel permeation chromatography and redox properties were studied by cyclic voltammetry. The surface morphology of thin polymer films was determined by atomic force microscopy. 相似文献
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