@article{MTMT:30347426, title = {A nanocrystalline monoclinic CaCO3 precursor of metastable aragonite}, url = {https://m2.mtmt.hu/api/publication/30347426}, author = {Németh, Péter and Mugnaioli, E and Gemmi, M and Czuppon, György and Demény, Attila and Spötl, C}, doi = {10.1126/sciadv.aau6178}, journal-iso = {SCI ADV}, journal = {SCIENCE ADVANCES}, volume = {4}, unique-id = {30347426}, issn = {2375-2548}, year = {2018}, eissn = {2375-2548}, orcid-numbers = {Németh, Péter/0000-0001-5592-5877; Czuppon, György/0000-0002-7231-6042; Demény, Attila/0000-0003-0522-9018} } @article{MTMT:3273962, title = {The effect of reconstruction works on planktonic bacterial diversity of a unique thermal lake revealed by cultivation, molecular cloning and next generation sequencing}, url = {https://m2.mtmt.hu/api/publication/3273962}, author = {Krett, Gergely and Szabó, Attila and Felföldi, Tamás and Márialigeti, Károly and Kériné Borsodi, Andrea}, doi = {10.1007/s00203-017-1379-9}, journal-iso = {ARCH MICROBIOL}, journal = {ARCHIVES OF MICROBIOLOGY}, volume = {199}, unique-id = {3273962}, issn = {0302-8933}, keywords = {GENES; TEMPERATURE; Cultivation; Molecular cloning; POPULATIONS; GRADIENT GEL-ELECTROPHORESIS; SEASONAL DYNAMICS; 16S RIBOSOMAL-RNA; Actinobacteria; pyrosequencing; Anthropogenic disturbance; SP NOV.; FRESH-WATER BACTERIA; BACTERIOPLANKTON COMMUNITY COMPOSITION; Thermal lake; Freshwater bacteria}, year = {2017}, eissn = {1432-072X}, pages = {1077-1089}, orcid-numbers = {Krett, Gergely/0000-0003-1145-4852; Felföldi, Tamás/0000-0003-2009-2478; Márialigeti, Károly/0000-0003-1536-5160; Kériné Borsodi, Andrea/0000-0002-3738-7937} } @article{MTMT:3158886, title = {Formation of amorphous calcium carbonate in caves and its implications for speleothem research}, url = {https://m2.mtmt.hu/api/publication/3158886}, author = {Demény, Attila and Németh, Péter and Czuppon, György and Leél-Őssy, Szabolcs and Szabó, Máté Zoltán and Judik, Katalin and Németh, Tibor and Stieber, J}, doi = {10.1038/srep39602}, journal-iso = {SCI REP}, journal = {SCIENTIFIC REPORTS}, volume = {6}, unique-id = {3158886}, issn = {2045-2322}, year = {2016}, eissn = {2045-2322}, orcid-numbers = {Demény, Attila/0000-0003-0522-9018; Németh, Péter/0000-0001-5592-5877; Czuppon, György/0000-0002-7231-6042; Németh, Tibor/0000-0002-1836-6006} } @article{MTMT:1962341, title = {Electron Diffraction Based Analysis of Phase Fractions and Texture in Nanocrystalline Thin Films, Part III: Application Examples}, url = {https://m2.mtmt.hu/api/publication/1962341}, author = {Lábár, János and Adamik, Miklós and Barna B., Péter and Czigány, Zsolt and Fogarassy, Zsolt and Horváth, Zsolt Endre and Geszti, Olga and Misják, Fanni and Morgiel, J and Radnóczi, György and Sáfrán, György and Székely, Lajos and Szuts, T}, doi = {10.1017/S1431927611012803}, journal-iso = {MICROSC MICROANAL}, journal = {MICROSCOPY AND MICROANALYSIS}, volume = {18}, unique-id = {1962341}, issn = {1431-9276}, abstract = {In this series of articles, a method is presented that performs (semi) quantitative phase analysis for nanocrystalline transmission electron microscope samples from selected area electron diffraction (SAED) patterns. Volume fractions and degree of fiber texture are determined for the nanocrystalline components. The effect of the amorphous component is minimized by empirical background interpolation. First, the two-dimensional SAED pattern is converted into a one-dimensional distribution similar to X-ray diffraction. Volume fractions of the nanocrystalline components are determined by fitting the spectral components, calculated for the previously identified phases with a priori known structures. These Markers are calculated not only for kinematic conditions, but the Blackwell correction is also applied to take into account dynamic effects for medium thicknesses. Peak shapes and experimental parameters (camera length, etc.) are refined during the fitting iterations. Parameter space is explored with the help of the Downhill-SIMPLEX. The method is implemented in a computer program that runs under the Windows operating system. Part I presented the principles, while part II elaborated current implementation. The present part III demonstrates the usage and efficiency of the computer program by numerous examples. The suggested experimental protocol should be of benefit in experiments aimed at phase analysis using electron diffraction methods.}, keywords = {computer program; quantitative analysis; nanocrystals; texture; thin films; TEM; phase fractions; ring patterns; SAED; electron diffraction}, year = {2012}, eissn = {1435-8115}, pages = {406-420}, orcid-numbers = {Lábár, János/0000-0002-3944-8350; Barna B., Péter/0000-0002-2662-7659; Czigány, Zsolt/0000-0001-6410-8801; Fogarassy, Zsolt/0000-0003-4981-1237; Horváth, Zsolt Endre/0000-0002-4632-0136; Radnóczi, György/0000-0002-5056-7625; Sáfrán, György/0000-0003-3708-3551} } @article{MTMT:141130, title = {Electron Diffraction Based Analysis of Phase Fractions and Texture in Nanocrystalline Thin Films, Part II: Implementation}, url = {https://m2.mtmt.hu/api/publication/141130}, author = {Lábár, János}, doi = {10.1017/S1431927609090023}, journal-iso = {MICROSC MICROANAL}, journal = {MICROSCOPY AND MICROANALYSIS}, volume = {15}, unique-id = {141130}, issn = {1431-9276}, year = {2009}, eissn = {1435-8115}, pages = {20-29}, orcid-numbers = {Lábár, János/0000-0002-3944-8350} } @article{MTMT:1177893, title = {Electron diffraction based analysis of phase fractions and texture in nanocrystalline thin films, Part I: Principles}, url = {https://m2.mtmt.hu/api/publication/1177893}, author = {Lábár, János}, doi = {10.1017/S1431927608080380}, journal-iso = {MICROSC MICROANAL}, journal = {MICROSCOPY AND MICROANALYSIS}, volume = {14}, unique-id = {1177893}, issn = {1431-9276}, abstract = {A method for phase analysis, similar to the Rietveld method in X-ray diffraction, was not developed for electron diffraction (ED) in the transmission electron microscope (TEM), mainly due to the dynamic nature of ED. Nowadays, TEM laboratories encounter many thin samples with grain size in the 1-30 nm range, not too far from the kinematic ED conditions. This article describes a method that performs (semi) quantitative phase analysis for nanocrystalline samples from selected area electron diffraction (SAED) patterns. Fractions of the different nanocrystalline components are determined from rotationally symmetric ring patters. Both randomly oriented nanopowders and textured nanopowders, observed from the direction of the texture axis produce such SAED patterns. The textured fraction is determined as a separate component by Fitting the spectral components, calculated for the previously identified phases with a priori known structures, to the measured distribution. The Blackman correction is applied to the set of kinematic diffraction lines to take into account dynamic effects for medium grain size. Parameters of the peak shapes and the other experimental parameters are refined by exploring the parameter space with the help of the Downhill-SIMPLEX. Part I presents the principles, while future publication of Parts II and III will elaborate on current implementation and will demonstrate its usage by examples, respectively.}, year = {2008}, eissn = {1435-8115}, pages = {287-295}, orcid-numbers = {Lábár, János/0000-0002-3944-8350} }