Autor: Yurtseven, H. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Pressure Dependence of the Raman Frequencies of Ammonia Solid I near the Melting Point
Autorzy:: Yurtseven, H.
Powiązania:: https://bibliotekanauki.pl/articles/2025788.pdf
Data publikacji:: 2001-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 63.70.+h
Opis:: We calculated in this study the Raman frequencies of some lattice modes in the melting region of ammonia solid I. The Raman frequencies of those phonon modes were obtained through the Grüneisen relation using the volume data for the ammonia solid I from the literature. Our calculated Raman frequencies require for comparison the experimental Raman frequencies measured as a function of pressure for some fixed temperatures in the ammonia solid I.
Źródło:: Acta Physica Polonica A; 2001, 99, 5; 557-564
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Temperature and Pressure Dependence of the Linewidth for an Internal Mode in the Solid Phases of Benzene
Autorzy:: Yurtseven, H.
Şenol, M.
Powiązania:: https://bibliotekanauki.pl/articles/1399290.pdf
Data publikacji:: 2013-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 64.60.-i
05.70.Fh
Opis:: The pressure dependence of the Raman linewidths for the $ν_1$ breathing mode is analyzed using the experimental data from the literature for the solid phases (I, II, III and III') in benzene. Increase (I, III and III') and decrease (II) in the Raman linewidths are described by a power-law analysis with the critical exponent β. The β values we find, which characterize the phase transition are in favour of the first order among those phases considered in benzene. The temperature and pressure dependence of the frequencies and linewidths of various Raman modes can be analyzed using a power-law formula, as studied here for the solid phases (I, II, III and III') in benzene when the experimental data are available in the literature.
Źródło:: Acta Physica Polonica A; 2013, 124, 4; 698-701
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Pressure Dependence of the Raman Modes Related to the Phase Transitions in Cyclohexane
Autorzy:: Yurtseven, H.
Cebeci, A.
Powiązania:: https://bibliotekanauki.pl/articles/1398881.pdf
Data publikacji:: 2015-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 63.70.+h
64.70.Dv
Opis:: The pressure dependence of the Raman frequencies for the $ν_{21}$ mode is studied by using the volume data at room temperature close to the transitions among the phases of III, IV and V in cyclohexane. By determining the pressure dependence of the mode Grüneisen parameter $γ_{T}$ in the phases and taking the average values, the Raman frequencies of those modes associated with the phase transitions are predicted through the volume data in cyclohexane. Our predicted Raman frequencies agree with those observed experimentally in this organic molecule. The Raman frequencies of the other modes can be calculated in cyclohexane and also in some molecular crystals using the method given here.
Źródło:: Acta Physica Polonica A; 2015, 127, 3; 744-747
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Modified pid control design for roll fin actuator of nonlinear modelling of the fishing boat
Autorzy:: Alarçin, F.
Demirel, H.
Su, M. E.
Yurtseven, A.
Powiązania:: https://bibliotekanauki.pl/articles/258902.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: stability analyses
nonlinear roll motion
modified PID
CFD
Opis:: This study aims to reduce roll motion of a fishing boat which arises from disturbing hydrodynamic effects by means of fin roll stabilizer. It is assured that roll motion with nonlinear damping and restoring moment coefficients are down to the desired level through classical PID and modified PID algorithms. At the time of sailing, stability, a very important concept, was examined using Lyapunov direct method taking initial conditions into consideration, and it was noted that the system was generally stable. In addition, NACA 0015 model was used for the fin roll stabilizer, and flow analysis was carried out with Computational Fluid Dynamics (CFD) method. In the simulation results, when the same gains were used, modified PID controller algorithms were relatively more effective compared to PID in the fin roll stabilizer system.
Źródło:: Polish Maritime Research; 2014, 1; 3-8
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

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