Feckova Z.,University of Pavol Jozef Safarik |
Feckova Z.,Matej Bel University |
Toma-Ik B.,Matej Bel University |
Toma-Ik B.,Czech Technical University
Acta Physica Polonica B, Proceedings Supplement | Year: 2015
Hydrodynamic modelling of quark-gluon plasma requires sophisticated numerical schemes that have low numerical viscosity and are able to cope with high gradients of energy density that may appear in initial conditions. We propose to use the Godunov method with an exact Riemann solver for ideal hydrodynamic modelling to meet these conditions. We present the results of numerical tests of the method, such as the sound wave propagation and the shock tube problem, which show both high precision of the method and low numerical viscosity.
Kridlo O.,University of Pavol Jozef Safarik |
Ojeda-Aciego M.,University of Malaga
CEUR Workshop Proceedings | Year: 2013
We continue our study of the general notion of L-Chu correspondence by introducing the category CRL-ChuCors incorporating residuation to the underlying complete lattice L, specifically, on the basis of a residuation-preserving isotone Galois connection λ Then, the L-bonds are generalized within this same framework, and its structure is related to that of the extent of a suitably defined λ-direct product. © paper author(s), 2013.
Balint S.,ICFO - Institute of Photonic Sciences |
Balint S.,University of Pavol Jozef Safarik |
Rao S.,ICFO - Institute of Photonic Sciences |
Marro M.,ICFO - Institute of Photonic Sciences |
And 4 more authors.
Journal of Raman Spectroscopy | Year: 2011
The local pH inside individual live glioma (U-87 MG) cancer cells was monitored after treatment by the photodynamic therapy drug 6-methyl-1,3,8- trihydroxyanthraquinone (emodin). The cellular pH is tracked by the real-time measurement of the surface-enhanced Raman scattering (SERS) from a probe that is embedded in the cell. The probe is a micrometer-sized silica bead that is covered by nanosized silver colloids, which enhance Raman signal, and 4-mercaptobenzoic acid (pMBA) whose molecular vibrations and resulting Raman spectrum are sensitive to pH. Visible excitation at different light dosages is used to activate the drug. The results indicate cell maintenance of internal pH and cell death at low and high light dosage, respectively. We demonstrate that these SERS probes are an effective tool for ex vivo pH monitoring in a live cell thanks to their high optical sensitivity and noninvasive usage. Copyright © 2011 John Wiley & Sons, Ltd.
Acebal C.C.,University of Hradec Kralove |
Acebal C.C.,National University of the South |
Sklenarova H.,University of Hradec Kralove |
Skrlikova J.,University of Hradec Kralove |
And 5 more authors.
Talanta | Year: 2012
An automated, simple and inexpensive double-valve sequential injection analysis (DV-SIA) spectrophotometic method with online liquid-liquid extraction, for the determination of thiocyanate has been developed. The method has been based on the formation of an ion associate between thiocyanate and Astra Phloxine in acidic medium, and the subsequent extraction with amylacetate. The absorbance of the extracted ion associate was measured at 550 nm. The calibration function was linear in the range 0.05-0.50 mmol L-1 and the regression equation was A = (1.887 ± 0.053) [SCN- mmol L-1] + (0.037 ± 0.014) with a correlation coefficient of 0.995. The precision of the proposed method was evaluated by the relative standard deviation (RSD) values at two concentration levels: 0.20 and 0.50 mmol L-1. The obtained results were 1.0 and 2.8%, respectively, for the intra-day precision, and 4.2 and 3.8%, respectively for the inter-day precision. The calculated detection limit was 0.02 mmol L-1. The developed method has been successfully applied for determining thiocyanate ions in human saliva samples. © 2012 Elsevier B.V. All rights reserved.
Buzink S.,Technical University of Delft |
Soltes M.,University of Pavol Jozef Safarik |
Radonak J.,University of Pavol Jozef Safarik |
Fingerhut A.,National and Kapodistrian University of Athens |
And 2 more authors.
Wideochirurgia I Inne Techniki Maloinwazyjne | Year: 2012
Introduction: New training models are needed to maintain safety and quality of surgical performance. A simulated setting using virtual reality, synthetic, and/or organic models should precede traditional supervised training in the operating room. Aim: The aim of the paper is to describe the Laparoscopic Surgical Skills (LSS) programme and to provide information about preliminary evaluation of Grade I Level 1 courses, including overall quality, applicability of the course content in practice and the balance between theory and hands-on training modules, by participating trainees. Material and methods: During 5 accredited LSS Grade I Level 1 courses held in Eindhoven (the Netherlands), Kosice (Slovak Republic), and Lisbon (Portugal) between April 2011 and January 2012, demographic data and pre-course surgical experience in laparoscopic surgery of the participants were recorded. The final course evaluation form was completed by each participant after the course (anonymous) to evaluate course progress, course materials, assessment, staff, location and overall impression of the course on a 1-10 scale to obtain feedback information. Results: Forty-seven surgeons of 5 different nationalities were enrolled in an LSS Grade I Level 1 programme. Most participants were first or second year residents (n = 25), but also already established surgeons took part (n = 6). The mean age of the participants was 31.2 years (SD = 2.86), the male/female ratio was 32/15, and previous experience with laparoscopic surgery was limited. Overall impression of the course was rated with 8.7 points (SD = 0.78). The applicability of the course content in practice and the balance between theory and hands-on training were also rated very well - mean 8.8 (SD = 1.01) and 8.1 points (SD = 0.80) respectively. Conclusions: Laparoscopic Surgical Skills Grade I Level 1 courses are evaluated as well balanced, with content applicable in clinical practice, meeting the expectations of individual participants. International interest in the programme suggests that LSS might become the future European standard in surgical education in laparoscopic surgery. Further conclusions concerning success of the programme may be drawn after the completion of clinical assessment of enrolled participants.