Institute of Rock Structure and Mechanics

Institute of Rock Structure and Mechanics 378 records found  beginprevious21 - 30nextend  jump to record: Search took 0.00 seconds. 
Textural properties of Zr alloys
Weishauptová, Zuzana ; Jandečková, Alena
The performed study is aimed on the identification of changes of the corrosion layers character in dependence on exposition time at high temperature oxidation.
High pressure sorption of CO2 and CH4 on coal from Upper Silesian Basin
Přibyl, Oldřich
High pressure adsorption isotherms of CO2 and CH4 were measured on three coal samples at 45 C temperature. The ratio of CO2:CH4 was determined to be around 1.75. The influence of coal maceral composition on gas adsorption was determined.
The Influence of Steam Sterilization Processes on the Micro- and Macromechanical Properties of Polyamide Fiber-Reinforced PDMS Composites for Medical Device Applications
Sochor, M. ; Balík, Karel ; Sedláček, R. ; Suchý, Tomáš ; Sucharda, Zbyněk ; Šepitka, J. ; Lukeš, J.
The effect of multiple steam sterilization processes on the structural integrity of the polymer matrix composite polydimethylsiloxane (PDMS) reinforced with polyamide fibers (Aramid) is investigated by 3- and 4-point bending tests and by nanoindentation.
The ash quality monitoring of biomass combustion
Tlustoš, P. ; Ochecová, P. ; Száková, J. ; Perná, Ivana ; Hanzlíček, Tomáš ; Habart, J. ; Straka, Pavel
The aim of methodology was, on the basis of results of analyzes of ash from more than 40 sources in the Czech Republic, these ash categorize by feedstock and identify suitable ash for use on agricultural land. It could lead to a significant shift to reduce the cost of incinerators, to the entry of new businesses on the market and to easier fulfilling of republican obligations in the share of energy production from renewable sources. Another advantage of finding employment for these materials, from an environmental view, is the reduction of landfilling and support for recycling of nutrients. The methodology presented the process for the selection of suitable ash for agricultural purposes and the reader should be able to determine the applicability of the material.
Natural gas extraction from gas shales
Eisner, Leo
Thesi article describes shale gas extraction and discusses envioemental impacts and situation in the CR.
Dynamics and fragmentations of meteoroids during their flight in the atmosphere
Kalenda, Pavel ; Borovička, Jiří ; Spurný, Pavel
The dynamic fragmentation of meteoroids during their flight in the atmosphere is described. The examples of very weak meteoroids, which easy fragments, up to strong meteoroids, which produce the explosive fragmentation, are described.
Methodology of Zr1Nb alloy hydriding
Weishauptová, Zuzana
The study describes the original method of Zr1Nb alloy hydriding.
The comparison of the corrosion layers character of Zr1Nb alloys samples
Weishauptová, Zuzana ; Sýkorová, Ivana
The performed study is aimed on the identification of the corrosion layers character of 3 samples of Zr1Nb alloy after the exposure to pressurized steam and VVER 360 oC.
Application of geochemical analysis in the research of chemical fossils
Havelcová, Martina ; Sýkorová, Ivana ; Trejtnarová, Hana
Biomarkers (also termed chemical fossils) are specific organic compounds in geological samples which are derived from biochemical precursors by reductive or oxidative alteration processes. Chemical structures of biomarkers can be related back to the original compounds and utilized as indicators of biogenic, paleoenvironmental and geochemical processes. Examples of identified biomarkers in several studied coals, sediments, and wood fossils remnants are presented.
Coalification – properties and classification of coal
Sýkorová, Ivana
The rank, properties and composition of peat and coal are discussed in relation to classification and utilization of coals.

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