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	Selection of mortars samples for radiocarbon dating Válek, Jan ; Kozlovcev, Petr ; Fialová, Anna ; Kotková, Kristýna ; Frankeová, Dita ; Skružná, Olga ; Maříková-Kubková, Jana ; Tomanová, Pavla ; Herichová, Iva ; Světlík, Ivo ; Pachnerová Brabcová, Kateřina ; Šimek, Pavel Radiocarbon dating of organic residues may not always correctly determine the age of analysed historic mortars. Therefore, it seems advantageous to use of carbon dating of the carbon contained in the structure of the lime mortar, which will provide representative data of the age of the investigated structure. The methodology presents basic instructions and rules for sample selection, processing, and evaluation. The aim of this methodology is the identification of cases where the radiocarbon dating of a binder is appropriate and to define the reasons why some binder systems fail to provide relevant results. Plný tet: PDF; PDF Detailed record
	Preparation of mortars samples for radiocarbon dating by mechanical separation Válek, Jan ; Kotková, Kristýna ; Fialová, Anna ; Kozlovcev, Petr ; Králová, Karolína ; Světlík, Ivo ; Pachnerová Brabcová, Kateřina The methodology establishes the procedure for mechanical separation of the binder from the mortars to determine their age using the radiocarbon method. Along with the procedure, there is also a method of verifying the quality of purification using optical microscopy supplemented with cathode luminescence. The methodology is developed on the basis of the current state of knowledge and presents the basic sample preparation procedure in the form of a detailed description of the proven method of mechanical separation of the binder from lime mortar samples together with possible problems and an evaluation of the separation quality. Plný tet: PDF; PDF Detailed record
	Use of calculation of 14CO2 volume activity for reconstruction of radiocarbon content changes in atmosphere Světlík, Ivo ; Fejgl, M. ; Turek, Karel ; Pachnerová Brabcová, Kateřina ; Tomášková, Lenka Atmospheric 14CO2 provides valuable information for better specification of carbon transport in nature. Radioactive 14C allows calculating some data related to the residence time of carbon in natural sinks as the atmosphere, oceans and biota. The work presents the estimation of 14CO2 content temporal changes in the atmosphere using the radiocarbon calibration curve IntCal09 and data about CO2 concentration during last 50 thousands years. Detailed record
	Radiouhlík v životním prostředí Šimon, J. ; Šivo, A. ; Světlík, Ivo ; Holý, K. ; Richtáriková, M. ; Polášková, A. ; Povinec, P. ; Bulko, M. In the presentation are compared results of atmospheric 14CO2 monitoring performed in Slovakia and in the Czech Republic. Detailed record
	Determination of 14C in point samples of stack air from Nuclear Power Plants Světlík, Ivo ; Michálek, V. ; Tomášková, Lenka ; Tomeš, Marek ; Brabcová, Kateřina During normal operation of nuclear power plants (NPP), with pressured light water reactors, is C-14 (relatively) responsible for major contribution of effective dose from all released radionuclides. In this paper is described a new method of C-14 forms determination in short-term (point) sampled stack air from NPPs. Item time series of C-14 activities is reported and compared with results of determinations performed by laboratories of NPP Temelín utilizing monthly cumulated samples Detailed record
	Determination of C-14 in environmental samples and effluents from NPPs Světlík, Ivo ; Michálek, V. ; Tomášková, Lenka Detailed record

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