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Comparison theorems for differential equations of neutral type

100%

Ruzickova M. , Spanikova E.

Fasciculi Mathematici

1998

tom Nr 28

141-148

We are interested in comparing the oscillatory and asymptotic properties of equations [...] with those of the equations [...]

A retract principle on discrete time scales

80%

Diblik J. , Ruzickova M. , Vaclavikova B.

Opuscula Mathematica

2006

tom Vol. 26, no. 3

445-455

In this paper we discuss asymptotic behavior of solutions of a class of scalar discrete equations on discrete real time scales. A powerful tool for the investigation of various qualitative problems in the theory of ordinary differential equations as well as delayed differential equations is the retraction method. The development of this method is discussed in the case of the equation mentioned above. Conditions for the existence of a solution with its graph remaining in a predefined set are formulated. Examples are given to illustrate the results obtained.

Initial data generating bounded solutions of linear discrete equations

80%

Bastinec J. , Diblik J. , Ruzickova M.

Opuscula Mathematica

2006

tom Vol. 26, no. 3

395-406

A lot of papers are devoted to the investigation of the problem of prescribed behavior of solutions of discrete equations and in numerous results sufficient conditions for existence of at least one solution of discrete equations having prescribed asymptotic behavior are indicated. Not so much attention has been paid to the problem of determining corresponding initial data generating such solutions. We fill this gap for the case of linear equations in this paper. The initial data mentioned are constructed with use of two convergent monotone sequences. An illustrative example is considered, too.

New nuclear advanced facilities at CVREZ

61%

Arnoult X. C. , Zychova M. , Ruzickova M. , Berka J. , Di Gabriele F. , Srba O.

Journal of Achievements in Materials and Manufacturing Engineering

2014

tom Vol. 65, nr 2

86--92

Purpose: The goal of this paper is to present the facilities designed and built in the frame of the SUSEN program in the Centrum Výzkumu Řež, allowing research and development in the area of Generation IV and nuclear fusion reactors. Design/methodology/approach: The coolants investigated are: supercritical water, helium and lead-bismuth. The SSD team is in charge to perform in hot-cells various kinds of mechanical tests on irradiated materials in the range from room temperature to 800°C (tensile test, creep test, tension-torsion test and fatigue test in different type of loading) and microstructure investigation with SEM and TEM. Findings: SUSEN project allows at CVREZ to develop the facilities and instrumentations that institute has already had. This project allows also developing new facilities, buying new experimental machines and gives a wide range of investigation in different field in the research and development of Gen IV reactor. Research limitations/implications: The different types of loops study the impact of media on the properties of structural materials. The behavior of media and the different type of mechanical tests in static and fatigue regime at different temperatures enable to extend the limit of knowledge about mechanisms of corrosion, mechanisms of degradations and improve the design and safety in nuclear power plant. Originality/value: The SUSEN program is divided in four sub-programs and teams: Technological Experimental Circuits (TEC), Structural and System Diagnostics (SSD), Material Research (MAT) and Material Fuel Cycle (JPC). TEC team is in charge of the development large-scale experimental loops to improve the quality and quantity of data about the behavior of coolants used in the primary circuit and the corrosion of steel in contact with coolants.

Effect of domperidone-induced hyperprolactinemia on selected immune parameters in healthy women

51%

Rovensky J. , Buc M. , Lojda Z. , Ruzickova M. , Blazickova S. , Rauova L. , Mistina T. , Vigas M. , Lackovic V.

Archivum Immunologiae et Therapiae Experimentalis

1995

tom 43

nr 3-4