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Journal of Radioanalytical and Nuclear Chemistry
Authors: I. Gresits, S. Tölgyesi, J. Solymosi, R. Chobola, L. Nagy, T. Past, L. Szabó, and P. Ormai
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Abstract  

57Co Mössbauer emission spectra of undoped and Fe or Mg melt-doped LiNbO3 single crystals show substantial amounts of the nucleogenic Fe3+ charge state (*Fe3+) which was generated as an after-effect of the electron-capture of 57Co2+. The proportion of *Fe3+ is markedly dependent on the Mg content and on the stoichiometry of the sample. Electron trapping is described within the model of competing acceptors. The capabilities of the model are investigated in defect structure analysis and charge trapping studies of LiNbO3.

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Abstract  

The effect of ion-beam irradiation on the composition and structure of some Co–Sn electrodeposits has been studied by Mössbauer spectroscopy. A transformation of dissolved tin and cubic CoSn to -Co3Sn2 was observed.

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Studia Slavica
Authors: János L. Nagy, Mihály Káprály, Mária Tétényi, István Fried, and Zsuzsanna Kalafatics

Nyelv, stílus, irodalom. Köszönto könyv Péter Mihály 70. születésnapjára. Budapest 1998, 646 p. (????, ?. ?.); - ?????? ?., ??????? ????? ??? ?????? ??????????? ????????? ?. ????????? ????????? ????????????? ???????? ?????? ???????????.(Studia Ukrainica et Rusinica Nyíregyháziensia 12). ?????????? 2002, 238 p. ( ???????, ?.); - ?. ?. ??????? ? ?. ?. ???????, ????????? ? ?. ?. ?????????. The Tolstoys' Correspo ndence with N. N. Strakhov. (?? ??????? ???????????????? ????? ?. ?. ????????). A. A. Donskov (Ed.). Compiled by L. D. Gromova & T. G. Nikiforova. (Tolstoy Series 3). Slavic Research Group at the University of Ottawa and State L. N. Tolstoy Museum, Moscow, 2000, 308 p. (??????, ?.); - Marija Mitrovic, Geschichte der slowenischen Literatur. Von den Anfängen bis zur Gegenwart. Klagenfurt-Ljubljana-Wien 2001. 617 p. (Fried, I.); - ??????? ??????? ??????????? ??????????? ???????? I. ?????? 2001, 213 p. (?????????, ?.)

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The fungal revolution taking place in otorhinology inspired us to study the frequency of occurrence of fungi in the nasal mucus of chronic rhinosinusitis (CRS) patients (with or without polyposis) in order to evaluate the incidence of eosinophilic fungal sinusitis in CRS patients. Ninety-six samples were examined from patients with CRS. In 74 cases mucus was collected non-invasively, and in 22 cases during operation. The Gram-stained direct smears of all samples were also evaluated. Bacteria and fungi colonizing in the mucus were detected by culturing method. The control group consisted of 50 healthy volunteers. Typical aerobic pathogenic bacteria could be isolated from 34 patients. Fifty-seven aerobic bacteria were isolated, i.e. 1.6 bacteria/positive patient with a maximum of 3 different bacteria/sample. The most frequently isolated bacteria were Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Streptococcus pneumoniae, and Haemophilus influenzae. Yeasts and moulds could be detected from 79 patients (83%): Candida albicans, Candida spp., Aspergillus spp., Cladosporium spp, and Penicillium spp. were isolated most frequently. Altogether 237 yeasts and moulds were isolated, i.e. 3.0 different fungi/positive patient, with a maximum of 5 different fungi/sample. In the control group aerobic pathogens were not isolated, only apathogenic species. Fungi were isolated from 22 healthy patients (44%). These data indicate that fungi are frequently involved in the aetiology of CRS. IgE-mediated hypersensitivity to fungal allergens could not be proven in our patients.

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Acta Microbiologica et Immunologica Hungarica
Authors: Ilona Dóczi, Erika Dósa, J. Varga, Zsuzsanna Antal, L. Kredics, and Elizabeth Nagy

The purpose of this study was to evaluate the Etest as an in vitro antifungal susceptibility test method for different moulds originating from human samples and from the environment. A total of 50 isolates (1 Acremonium, 18 Aspergillus, 2 Cladosporium, 1 Epicoccum, 15 Penicillium, 2 Scopulariopsis and 11 Trichoderma strains) were tested by the Etest. Forty-six of the tested moulds (92%) were resistant to fluconazole with minimal inhibitory concentrations (MICs) ³ 256 µg ml-1. There were strains resistant to ketoconazole among Aspergillus niger, A. ochraceus and Cladosporium spp. with MICs ? 32 µg ml-1. For fluconazole, no differences were observed using two different inocula, while for itraconazole, ketoconazole and amphotericin B, a 1 or less step 2-fold dilution difference in MIC was seen for the most of 10 selected strains. The MICs of fluconazole and amphotericin B obtained for Trichoderma strains by the Etest and the agar dilution method were also compared. MICs for fluconazole were in agreement, while MICs for amphotericin B were higher with 1 or 2 steps of 2-fold dilutions for most of Trichoderma strains in the case of the agar dilution method.

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Acta Microbiologica et Immunologica Hungarica
Authors: T. Emri, Brigitta Oláh, L. Sámi, Zs. Molnár, Márta Nagy, Tünde Pusztahelyi, and I. Pócsi
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Studies involving morphological description with both dominant (RAPD) and codominant (SSR, isoenzyme) molecular markers were made on 28 maize inbred lines of known genetic background with a final aim of prediction of heterosis. The genetic distance and degree of relationship between the lines was determined using cluster analysis. Only a very limited extent of allele polymorphism could be detected in isoenzyme analyses as the 28 lines formed only 16 gel electrophoretic groups, indicating that certain lines had identical isoenzyme patterns. On the basis of RAPD and gene-specific microsatellite (SSR) markers, however, all the lines could be distinguished from each other. When the lines were grouped according to genetic background it was found that although the individual marker systems only partially reflected the actual relationships between the lines, a joint processing of the data, supplemented with morphological data, revealed a close correlation between the groups formed on the dendrogram and the genetic background.

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Abstract  

A number of 15 [Fe(Diox#x00B7;H)2L2] type chelates and [Fe(Diox)3(BOR)2] clathrochelates (Diox#x00B7;H2 — dimethylglyoxime, glyoxime, propoxime, nyoxime, furyl-dioxime; L-pyridine, alkyl-pyridine derivatives, diethyl-phenyl-phosphine, diethyl-p-tolyl-phosphine) were obtained and characterized by means of far and middle FTIR and Mössbauer spectroscopic methods. Some structural problems were discussed on the basis of the optical data.The DSC measurements show the higher thermal stability of the clathrochelates without O—HO intramolecular hydrogen bonds (with asymmetric octahedral structure), as compared to the [Fe(Diox#x00B7;H)2L2] trans, symmetric chelates containing O—HO bonds. The kinetic parameters of the thermal decomposition of the complexes have been derived using the nomogram method.

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