Number of found documents: 120
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Valley evolution of the Biala Lądecka drainage network during late Cenozoic, Lower Silesia, Poland
Stemberk, Jakub; Štěpančíková, Petra; Tábořík, Petr; Coubal, Miroslav
2017 - English
Biala Lądecka (Biala Kłodzka) river is located in Lower Silesia (Poland) and its valley separates Góry Złote Mts.\n(Rychlebské hory Mts.) on the NE from Góry Bialskie Mts. on the SW. We conducted geomorphic investigations on the Biala\nLądecka river basin, in order to determine if Quarternary tectonic activity at the Bělský fault (or near Marginal Sudetic fault) is\ncontributing to the river’s asymmetry. Our research was focused on analysis of selected landforms, DEM parameters,\nmorphometric indexes and their spatial distribution which could potentially indicate recent tectonic activity in the area. At\nselected places geophysical measures were used to discover proper location and structure of Bělský fault or presence of\nsuggested morpholineaments. Preliminary results suggest a Quaternary tectonic activity for the Bělský fault. Moreover we tried\nto clarify nowadays stress regime in study area based striae measurement on fault planes and precise monitoring of selected\nfaults using TM-71 device. Keywords: Poland - Czech border; NE Europe; stable continental areas; Biala Lądecka river; Bělský fault; morphometric indexes; DEM analysis Fulltext is available at external website.
Valley evolution of the Biala Lądecka drainage network during late Cenozoic, Lower Silesia, Poland

Biala Lądecka (Biala Kłodzka) river is located in Lower Silesia (Poland) and its valley separates Góry Złote Mts.\n(Rychlebské hory Mts.) on the NE from Góry Bialskie Mts. on the SW. We conducted ...

Stemberk, Jakub; Štěpančíková, Petra; Tábořík, Petr; Coubal, Miroslav
Ústav struktury a mechaniky hornin, 2017

Late Quaternary activity of slow-slip intraplate Mariánské Lázně fault as revealed by trenching and shallow geophysical survey; Bohemian Massif (Czech Republic, central Europe)
Štěpančíková, Petra; Fischer, T.; Hartvich, Filip; Tábořík, Petr; Rockwell, T.; Stemberk, Jakub; Široký, J.; Sana, Hamid
2017 - English
The NNW-SSE trending Mariánské Lázně Fault (MLF) zone is situated in the western part of the Bohemian Massif (Czech\nRepublic, central Europe) where it intersects NE-trending Cenozoic Eger rift. The northern segment of the MLF controls the\nmorphologically pronounced mountain front of Krušné hory Mts. and eastern limit of Cenozoic Cheb basin, which is famous for\nearthquake swarms (max. ML=4.6) and CO2 emanation. We performed 2D and 3D geophysical survey (electric resistivity\ntomography, ground penetration radar) and 3D trenching to look for large surface-rupturing prehistoric earthquake responsible\nfor pronounced moutain range front. Seven excavated and six hand-dug trenches revealed a complex geology and deformation\nat the study site probably as a result of right-lateral transpression during Late Quaternary. Two Holocene earthquakes 1150-590\nBC and 780-1000 AD were inferred from 14C dating of faulted Holocene colluvium with corresponding magnitudes Mw=6.7-7.0.\nThe latter one is the youngest documented surface-rupturing event in central Europe.\n Keywords: paleoseismic trenching; historic earthquake; Cheb basin; Mariánské Lázně fault; Bohemian Massif Fulltext is available at external website.
Late Quaternary activity of slow-slip intraplate Mariánské Lázně fault as revealed by trenching and shallow geophysical survey; Bohemian Massif (Czech Republic, central Europe)

The NNW-SSE trending Mariánské Lázně Fault (MLF) zone is situated in the western part of the Bohemian Massif (Czech\nRepublic, central Europe) where it intersects NE-trending Cenozoic Eger rift. The ...

Štěpančíková, Petra; Fischer, T.; Hartvich, Filip; Tábořík, Petr; Rockwell, T.; Stemberk, Jakub; Široký, J.; Sana, Hamid
Ústav struktury a mechaniky hornin, 2017

Field measurement of natural electromagnetic emissions near the active tectonic and mass-movement fractures in caves
Trčka, T.; Macků, R.; Koktavý, P.; Škarvada, P.; Baroň, I.; Stemberk, Josef
2017 - English
Laboratory tests on a wide range of solid materials shoved that the electromagnetic emission (EME) signals are generated during the samples mechanical stress. EME anomalies have been observed also under natural conditions in association to fracture processes, tectonic loading, stress redistribution and crack propagation prior to earthquake or in relation to deep-seated gravitational mass movements. This paper describes a first prototype of the Emission data logger, which was specially developed for the continual EME monitoring in field conditions. Our equipment has been installed and tested in Obir Caves (Austria) at an active tectonic fault. The pilot long-term EME measurement results from this location are also presented in this paper. Keywords: Active tectonic fault; Continual monitoring; Emission data logger; Field measurement; Fracture processes; Natural electromagnetic emissions Available at various institutes of the ASCR
Field measurement of natural electromagnetic emissions near the active tectonic and mass-movement fractures in caves

Laboratory tests on a wide range of solid materials shoved that the electromagnetic emission (EME) signals are generated during the samples mechanical stress. EME anomalies have been observed also ...

Trčka, T.; Macků, R.; Koktavý, P.; Škarvada, P.; Baroň, I.; Stemberk, Josef
Ústav struktury a mechaniky hornin, 2017

Hydrogen charging of fuel cladding methodology
Krejčí, J.; Kabátová, J.; Kočí, J.; Weishauptová, Zuzana; Vrtílková, V.
2016 - English
Hydrogen content is a very important parameter for mechanical properties of fuel cladding. The methodology of developed hydrogen charging is described. Keywords: fuel cladding; hydridation Available at various institutes of the ASCR
Hydrogen charging of fuel cladding methodology

Hydrogen content is a very important parameter for mechanical properties of fuel cladding. The methodology of developed hydrogen charging is described.

Krejčí, J.; Kabátová, J.; Kočí, J.; Weishauptová, Zuzana; Vrtílková, V.
Ústav struktury a mechaniky hornin, 2016

A brief introduction to the geology of the Moldanubian batholith
Verner, K.; René, Miloš; Žák, J.; Janoušek, V.
2015 - English
Emplacement processes and tectonic setting of the Moldanubian batholith. The batholith consists of multiple intrusive units (plutons, stocks and dykes), predominantly composed of granitic to granodioritic rocks with either S- or transitional I/S-type. Keywords: granite; petrology; geochemistry; Bohemian Massif Available at various institutes of the ASCR
A brief introduction to the geology of the Moldanubian batholith

Emplacement processes and tectonic setting of the Moldanubian batholith. The batholith consists of multiple intrusive units (plutons, stocks and dykes), predominantly composed of granitic to ...

Verner, K.; René, Miloš; Žák, J.; Janoušek, V.
Ústav struktury a mechaniky hornin, 2015

Origin of “rock cities”, pillars and cleft-conduits in kaolinite-bonded sandstone: New insight from study in sandstone quarry where landforms recently evolve
Bruthans, J.; Soukup, J.; Schweigstillová, Jana; Vaculíková, J.; Smutek, D.; Mayo, A. L.; Falteisek, L.
2013 - English
Based on measurements of relative erodibility, ambient and water-saturated tensile strength at natural and quarry exposures three distinct kinds of surfaces were distinguished (erodible sandstone, sub-vertical fracture surfaces and case hardened surfaces). Erosion proceeded along highly fractured zones. Keywords: case hardening erosion; fluidization; overland flow; piping; sandstone landforms Fulltext is available at external website.
Origin of “rock cities”, pillars and cleft-conduits in kaolinite-bonded sandstone: New insight from study in sandstone quarry where landforms recently evolve

Based on measurements of relative erodibility, ambient and water-saturated tensile strength at natural and quarry exposures three distinct kinds of surfaces were distinguished (erodible sandstone, ...

Bruthans, J.; Soukup, J.; Schweigstillová, Jana; Vaculíková, J.; Smutek, D.; Mayo, A. L.; Falteisek, L.
Ústav struktury a mechaniky hornin, 2013

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.
2012 - English
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. Keywords: composite material; sterilization; nanoindentation Available at various institutes of the ASCR
The Influence of Steam Sterilization Processes on the Micro- and Macromechanical Properties of Polyamide Fiber-Reinforced PDMS Composites for Medical Device Applications

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 ...

Sochor, M.; Balík, Karel; Sedláček, R.; Suchý, Tomáš; Sucharda, Zbyněk; Šepitka, J.; Lukeš, J.
Ústav struktury a mechaniky hornin, 2012

Sterilization Decomposition Evaluation of Radiolucent Composite Materials for Use in Medicine
Sochor, M.; Balík, Karel; Suchý, Tomáš; Sedláček, R.; Sucharda, Zbyněk; Beneš, J.; Prokop, J.
2011 - English
This study evaluates the resistance against multiple sterilization processes of radiolucent composite materials for use in medicine as an intraoperative imaging device material. The composite materials under investigation here are composed of carbon fibers, polyphenylene sulfide and polyetheretherketone matrix. The influence of multiple sterilization processes on changes in their mechanical and structural properties are determined. The radiolucency of the proposed composites is verified. Keywords: composite material; sterilization decomposition; radiolucency Available at various institutes of the ASCR
Sterilization Decomposition Evaluation of Radiolucent Composite Materials for Use in Medicine

This study evaluates the resistance against multiple sterilization processes of radiolucent composite materials for use in medicine as an intraoperative imaging device material. The composite ...

Sochor, M.; Balík, Karel; Suchý, Tomáš; Sedláček, R.; Sucharda, Zbyněk; Beneš, J.; Prokop, J.
Ústav struktury a mechaniky hornin, 2011

Pyrolysis of coal/waste plastic mixtures in cokemaking
Melegy, A.; Sýkorová, Ivana; Kříž, Vlastimil; Havelcová, Martina
2011 - English
In the recycling process of waste plastic using coke oven, sub-bituminous coal and added 5 vol. % of plastics are carbonized and changed into coke of optimal properties, tar and gas . Keywords: Maghara subbituminous coal; pyrolysis; coal/plastic waste blend Available at various institutes of the ASCR
Pyrolysis of coal/waste plastic mixtures in cokemaking

In the recycling process of waste plastic using coke oven, sub-bituminous coal and added 5 vol. % of plastics are carbonized and changed into coke of optimal properties, tar and gas .

Melegy, A.; Sýkorová, Ivana; Kříž, Vlastimil; Havelcová, Martina
Ústav struktury a mechaniky hornin, 2011

Application of a rotary kiln for the treatment of carbonaceous materials of the selective waste polymer and biomass type
Kříž, Vlastimil; Bičáková, Olga; Náhunková, Jana
2011 - English
In the rotary kiln, samples of polypropylene and sawdust in model mixtures with bituminous-coal coke at a temperature of 900°C were pyrolyzed. The composition and features of the pyrolytic gas and solid product were observed. Keywords: rotary kiln; pyrolysis; biomass; pyrolýza; biomasa Available at various institutes of the ASCR
Application of a rotary kiln for the treatment of carbonaceous materials of the selective waste polymer and biomass type

In the rotary kiln, samples of polypropylene and sawdust in model mixtures with bituminous-coal coke at a temperature of 900°C were pyrolyzed. The composition and features of the pyrolytic gas and ...

Kříž, Vlastimil; Bičáková, Olga; Náhunková, Jana
Ústav struktury a mechaniky hornin, 2011

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