
S. K. Manna, S. Ghosh, S. C. Mandal:
Torsional oscillation of rigid disk in an infinite cylinder

Z. Dżygadło, I. Nowotarski, A. Olejnik:
Vibrations and stability of a biselfexcited surface
structure in supersonic flow subjected to a follower force

M. Bellenoue A. Cenian, T. Kageyama, S. A. Labuda,
C. Leys:
Electrical probe measurements of the gas velocity ahead of a
combustion front and the burning velocity in propane/air mixtures

K. Pawlik, J. J. Wysłocki, O. I. Bodak, A. Przybył,
I. Wnuk:
Crystalline structure and magnetic properties of the Nd_{12.5x}
Fe_{87.5} Zr_{x}alloys (x2, 4, 6, 8, 10)

A. Szczepański:
Nonclassical properties of quantum information transfer: proposed experiments
 S. K. Manna, S. Ghosh, S. C. Mandal:
Torsional oscillation of rigid disk in an infinite
cylinder

In this paper torsional oscillation of rigid disk in an infinite
cylinder has been analyzed. The problem is reduced to solve the
Fredholm integral equation of second kind by applying Hankel and
Fourier transforms. Stress intensity factor at the edge of the
strip has been derived and plotted to show the effect of cylinder
width on stress intensity factor.
Contents
 Z. Dżygadło, I. Nowotarski, A. Olejnik:
Vibrations and stability of a biselfexcited surface
structure in supersonic flow subjected to a follower force

A surface structure in supersonic flow having a deformable support
and subjected to a follower compressing force, which preserves its
direction tangential to the deformed surface, is a biselfexcited
system enclosing two independent physical factors being the reason
of selfexcited vibrations.

In the paper, a study of vibrations and stability of such a
structure is presented using the example of a rectangular plate in
oneside supersonic flow subjected to a follower force. The plate
is considered under the assumption that the conditions of rigid
support are satisfied at the plate edges parallel to the
unperturbed flow direction. One of the remaining edges is clamped,
while the second one has a deformable support. For comparison, the
results of analysis in the case of a plate of finite length and
infinite width are also presented.

A number of numerical calculations have been performed. The
analysis indicates a variety of phenomena resulting from
simultaneous action of the two independent factors decisive for
selfexcitation of the structure under consideration.
Contents
 M. Bellenoue A. Cenian, T. Kageyama, S. A. Labuda,
C. Leys:
Electrical probe measurements of the gas velocity ahead of a
combustion front and the burning velocity in propane/air mixtures

A simple method, which enables determination of the laminar
burning velocity and the unburned gas velocity ahead of the
combustion front in a closed vessel, is presented in the paper.
The method is based on electrical probe and Schlieren techniques.
There is a good agreement between presented data and other works
for all considered equivalence ratios of propane/air mixture. The
dependence of unburned gas velocity on flame radius agrees well
with the data received using LDV method. The obtained results
demonstrate that some difficulties may appear when combustion
front of nonspherical shape is considered.
Contents
 K. Pawlik, J. J. Wysłocki, O. I. Bodak, A. Przybył,
I. Wnuk:
Crystalline structure and magnetic properties of the
Nd_{12.5x} Fe_{87.5} Zr_{x }alloys (x2, 4, 6, 8, 10)

The effect of Zr contents on the phase composition and magnetic
properties of the NdFeZr alloys was studied. In order to
determine the phase composition, the Xray diffraction was
applied. It was stated that the following phases form the
NdFeZr alloy: Nd_{2}Fe_{17}, Fe_{3}Zr and
αFe. Using optical microscope and electron scanning microscope, the
microstructure observations were performed. Additionally, a linear
analysis of the distribution of elements concentration was carried
out. Furthermore, magnetocrystalline anisotropy constants K_{1}
and K_{2} were determined applying Fourier analysis of the
magnetic torque curves L(Θ) and Curie temperatures
T_{C} using Farady's magnetic balance.
Contents
 A. Szczepański:
Nonclassical properties of quantum information transfer:
proposed experiments

An experiment is proposed to test the feasibility of useful,
classically complete information transfer between distant
subsystems by means of the quantum channel alone. A second version
of this experiment is proposed as a "gedanken" example of
noncommutation of quantum measurements in spatially disjoint
correlated subsystems.
Contents
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