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	Ion Current Rectification Behavior at Novel Borosilicate Glass Capillaries Silver, Barry Richard ; Holub, Karel ; Mareček, Vladimír We present an easy methodology to produce novel, robust and reusable borosilicate glass microcapillaries. Using these capillaries we investigate ion current rectification behavior using DC and AC electrochemical techniques. We find that two non-ohmic behaviors can manifest. The presence of low frequency inductive loops on the Nyquist plot tentatively suggests electrokinetic mass transport processes may be present at the capillary wall. Detailed record
	Proton transfer across a liquid/liquid interface facilitated by phospholipid interfacial films Holub, Karel ; Jänchenová, Hana ; Štulík, Karel ; Mareček, Vladimír The five-step mechanism proposed earlier for the formation of phospholipid films at aqueous/organic interfaces and for their behavior involving transfer of protons from the aqueous to the organic phase was further studied by cyclic voltammetry. A theoretical model was created for this mechanism and compared with the experimental results. Both the experimental and theoretical results support the proposed mechanism and evaluate the importance of the individual steps. It seems that the decisive step is the regenration of the zwitterionic form of the phospholipid at the interface, ensuring stability of the film in time and its continuous functioning. Detailed record
	Design of measurement system and evaluation of technical seismicity influence induced by urban tunnelling upon surface structures Kaláb, Zdeněk ; Knejzlík, Jaromír ; Holub, Karel This report summarized results of project CBU 38-05 (Czech Bureau of Mining) that were obtained to solve partial problem (see name of report). Significant results were presented in recommended methodologies of measurements and evaluation of seismicity induced by shallow tunneling in urban areas, also in recommendation for changes in law CBU 55/1996. Detailed record
	Evaluation of parameters of rockbursts in the Ostrava-Karviná Coal Basin within the period 1993-2005 on the basis of seismological observations and their in-situ manifestations Holub, Karel ; Šancer, J. The research was oriented to the determination of empirical relation of particle velocity decrease of P and S waves with increasing hypocentral distance. For the investigation only data of observed rockbursts was applied. An attempt was carried out to determine the extent and reach of irreversible deformations connected with particle velocity observation defined for the respective site of geomechanical in-situ estimation. As a preliminary measure of working damage the length of the affected working was accepted. Detailed record
	The knowledge from the long-term investigation of natural and induced seismicity in the Moravo-Silesian region Holub, Karel ; Kaláb, Zdeněk ; Knejzlík, Jaromír ; Rušajová, Jana ; Dombková, Anna Present paper describes some results of basic research in geophysics and geophysical instrumentation in the last 25 years of the Institute of Geonics AS CR, v.v.i. existence. This research was aimed at development of instrumentation for local and regional networks and theit operation. During the operation of permanent station OKC and temporary seismic stations some microearthquakes, mining induced seismic events and quarry blasts were recorded and investigated. Detailed record
	Stress-strain behaviour research of rocks under dynamic loading Petroš, V. ; Bagde, M. N. ; Daněk, T. ; Hofrichterová, L. ; Hudeček, V. ; Michalčík, P. ; Slivka, V. ; Špinka, O. ; Vavro, M. ; Žůrek, P. ; Holub, Karel The aim of this project was oriented to determination of physical-mechanical characteristics of rocks under dynamic load using laboratory device MTS 816 Rock Test System. The research was drawn to investigation of surrounding rocks properties, i.e. rocks from the rock massif, where anomaleous geomechanical events do occur. Detailed record
	Assessment of Rockbursts parameters inferred from in-situ observations Petroš, V. ; Holub, Karel The aim of this article is to determine maximum stress due to seismic waves propagation through the rock mass. For this determination, rock density, velocity of seismic waves propagation vp and vs and ground amplitudes were introduced. For the evaluation data recorded at 3 underground seismic station from the time period 1993-2002 were used. To this set of data only rockbursts with some consequences in mine were included. Based on these analyses, predominant frequencies of seismic P and S waves, dependences of ground amplitudes to scaled distance and stress at the head of seismic wave were calculated. Detailed record
	Seismological observations during the experiment CELEBRATION 2000 and their preliminary evaluation Holub, Karel ; Rušajová, Jana During seismic experiment CELEBRATION 2000 some explosions were also recorded at the seismological stations situated on the Moravian territory. Based on readings of stations OKC, MORC, VRAC and seismological polygon near Frenštát p. Radh., an attempt to determine velocities of the seismic waves propagation Pn, Pg and Sg was realized. Detailed record
	Contribution to long-term observation of the seismic regime in the Ostrava-Karviná coal basin Holub, Karel ; Rušajová, Jana Seismic activity in the Ostrava-Karviná Coal Basin is continuously monitored by networks of seismic stations within the local as well as regional networks. Results of interpretation of seismic data proved the seismic method to be an valuable tool in geomechanical practice. Detailed record
	Stress evaluation on the head of seismic wave Petroš, V. ; Holub, Karel Paper is intended to investigation of ground velocites of the seismic waves propagation in the rock mass during rockbursts and other anomalous geomechanical events. These data will be used for experiments performed with the aim of comparison the behavior of rock in-situ and under laboratory loading. Detailed record

See also: similar author names
3	HOLUB, Kryštof
6	Holub, Kamil
3	Holub, Kryštof

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