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• Hemichorea–hemiballismus (HCHB) is a rare medical condition. • HCHB can stem from brain lesions or metabolic issues. • Hyperglycemic-induced hemichorea–hemiballismus (HIHH) has been described. • No reports of HIHH in COVID-19 vaccine-induced hyperglycemia so far. [ABSTRACT FROM AUTHOR]

Electron Paramagnetic Resonance (EPR) dating, like luminescence techniques, is based on the time-dependent accumulation of trapped charges at mineral defect centres. However, Fe(III) ions prevent the common Continuous Wave (CW-EPR) approach for dating pottery, which always contains iron. The Pulsed method (ED-EPR) allowed this limitation to be overcome, with recording of radiation-induced defect signals, as shown by increased signal intensity after artificial irradiation of samples. The method was applied to studying Mesolithic and Neolithic pottery from Al Khiday (Central Sudan), characterized by quartz-rich tempers and coming from dated contexts. As the occurrence of a natural ED-EPR signal was found to be related to the quartz grain size of the temper, a petrographic study was carried out. This first attempt at age determination of pottery by ED-EPR meant that experimental conditions and important parameters could be taken into account in developing a new dating procedure. [ABSTRACT FROM AUTHOR]

In this work, we present the results of the quantitative determination of Fe and Mn in different oxidation states, inferring a colour to the glass used in a palaeo-Christian polychrome mosaic of St. Prosdocimus in the Basilica of St. Justine (Padova). The colour in the glass is determined by the amount of the ions of the elements in different oxidation states. More than 3000 loose tesserae of this mosaic, characterised by a full range of colours, are available, with different features of opacity. For a representative batch of tesserae with different colours, the determination of Mn(II), Mn(III), Fe(II) and Fe(III) was obtained by using a combination of Electron MicroProbe Analysis (EMPA) and Electron Paramagnetic Resonance (EPR). A meaningful relationship between colour, and the ions content in the ancient glasses was found. [ABSTRACT FROM AUTHOR]

Abstract: Archaeological fragments of pottery have been investigated by using CW-EPR and Echo Detected EPR (EDEPR). EDEPR allows to remove the CW-EPR dominant Fe(III) background spectrum, hiding much weaker signals potentially useful for dating purpose. EDEPR spectra attributed to a methyl radical and to feldspar defects have been recorded at room and low temperature for an Iron Age cooking ware (700 B.C.). A study on the dependence of EDEPR intensity over absorbed dose on a series of γ-irradiated brick samples (estimated age of 562 ± 140 B.C.) has confirmed the potential efficacy of the proposed method for spotting defect signals out of the strong iron background. [Copyright &y& Elsevier]

Three new 2-oxo-1,2-dihydrobenzo[ h ]quinoline-3-carbaldehyde terminal substituted aroylhydrazone ligands (2-Oxo-1,2-dihydrobenzo[ h ]quinoline-3-carbaldehyde(2′-hydroxybenzoyl)hydrazine, H 2 L1, 1 , 2-Oxo-1,2-dihydrobenzo[ h ]quinoline-3-carbaldehyde(2′-hydroxybenzoyl)hydrazine, H 2 L2, 2 , 2-Oxo-1,2-dihydrobenzo[ h ]quinoline-3-carbaldehyde(2′-hydroxybenzoyl)hydrazine, H 2 L3, 3 ) and the corresponding novel copper(II) complexes [Cu(L)(CH 3 OH)(NO 3 )](L = HL1 ( 4 ), HL2 ( 5 ), HL3 ( 6-6 + ), have been synthesized to compare their coordination behaviour and biological activity with respect to the presence of an OH group in different positions of the phenyl ring in the hydrazone moieties. The new ligands and their copper complexes were characterized by elemental analysis and spectroscopic techniques. The molecular structures of the new complexes 4 and 6-6 + were determined by single crystal X-ray diffraction. The interactions of the free ligands and their copper complexes with calf thymus DNA were tested by absorption measurements and ethidium bromide competitive studies which revealed that all compounds may interact with calf thymus DNA through intercalation. Furthermore, a comparative analysis of the cytotoxic effect of the compounds on a panel of human cancer cell lines showed that the copper complexes exhibited in vitro antitumor activity significantly higher than that of the free ligands and also of cisplatin. [ABSTRACT FROM AUTHOR]