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Wyszukujesz frazę "Uncu, H." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Effect of Dimple Potential on Ultraslow Light in a Bose-Einstein Condensate
    Autorzy:
    Tarhan, D.
    Uncu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490935.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.50.Gy
    67.85.Hj
    Opis:
    We investigate the propagation of ultraslow optical pulse in atomic Bose-Einstein condensate in a harmonic trap decorated with a dimple potential. The role of dimple potential on the group velocity and time delay is studied. Since we consider the interatomic scattering interactions, nonlinear Schrödinger equation or the Gross-Pitaevskii equation is used in order to get the density profile of the atomic system. We find large group delays of order 1 ms in an atomic Bose-Einstein condensate in a harmonic trap with a deep dimple potential.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1; 141-143
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the effects of moving targets on hit force in Taekwondo
    Autorzy:
    Kumartaşli, M.
    Üncü, İ.
    Çatikkaş, F.
    Akyüz, M.
    Kılım, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068591.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.05.Rm
    07.07.Mp
    07.10.-h
    Opis:
    The system to be developed has been designed in order to determine the training levels of the athletes in the field of taekwondo at national and international level and to follow-up the talent development process using computer support. The progression and continuity of hit power and time-dependent performance improvement of an athlete can be measured with interactive impact measurement system. The system determines a random target. It marks the target by blue light. When the light turns on, the athlete reacts accordingly and swiftly by kicking without knowing the light timing. The athlete only needs to know where the light is. Unlike in other training systems, the piston has been able to go back and forth in response to the strike of the athlete by means of a moving hydraulic system. The athlete can be pushed back by opening the piston when his/her performance drops down. The piston strike model is deactivated when the performance of the athlete is above a given threshold value. There will be four operating phases in the mechanism depending on the impact speed of the piston. Moving target robotic system analyses various hits in Taekwondo with the aim to determine hit force and reaction time. After completion of the warming up at the first stage, the athlete will be able to increase the workout level from low to high levels and will try to keep the mechanism behind as much as possible. Moreover, the athlete will be able to compare his/her results with results of others. Using this system, the efficiency of athletes can be easily determined and deficiencies can be resolved.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 382-384
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of Radiation Shielding Properties of Cotton Polyester Blend Fabric Coated with Different Barite Rate
    Autorzy:
    Kilincarslan, S.
    Akkurt, I.
    Uncu, I.
    Akarslan, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398803.pdf
    Data publikacji:
    2016-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.88.+h
    Opis:
    Using radiation in industry and medicine brings its hazardous effects. On account of this, people have started to be exposed to extra radiation. Thus radiation protection is developed in parallel with the utilization of radiation. In order to be protected from radiation three different criteria have to be taken into account, these are time, distance and the shielding. Shielding is the most effective way. An effective shield should cause a large energy loss on a small distance without emission of more hazardous radiation. In the world, more than three-hundred nuclear facilities have been used to fulfill the needs in the fields of scientific research, energy, agriculture and industry. In addition to this in medical centres radiation beams have been used for treatment and diagnosis. It is extremely important to protect the human body from radioactive rays. Barite is a mineral which can be used for shielding because of barium, which is a high atomic number element. The shielding property of barite is utilized in fabrics. Barite coated fabrics having characteristics of retaining radiation was obtained by penetrating barite into the fabrics via coating method. The linear attenuation coefficients (μ) of the coated barite fabrics were measured at the photon energies of 662, 1173 and 1332 keV obtained from ^{137}Cs and ^{60}Co γ-ray sources, respectively. As detailed elsewhere, the measurement has been performed using the gamma spectrometer that contains NaI(Tl) connected to 16k channels multi-channel-analyser. In this study, cotton polyester blend fabric was used. To apply barite mineral to fabric via coating method, it was grinded to a size of 2-10 microns by using jaw crushers. FK 800/N type transparent compound was used as adhesive. The coated fabrics were prepared with different volumes of barite. For this purposes four different types of fabrics have been produced, where the rate of barite was 0%, 40%, 50% and 60%. The results of experiments show that barite coated fabrics have blocked radiation. When barite ratio increases, the amount of absorbed radiation also increases.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 4; 878-879
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiation Protection by the Barite Coated Fabrics via Image Processing Methodology
    Autorzy:
    Akarslan, F.
    Molla, T.
    Akkurt, İ.
    Kilinçarslan, Ş.
    Üncü, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1195237.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.88.+h
    28.41.-i
    Opis:
    According to developing technology and conditions of modern life, use of radiation is rapidly increased. Unwittingly, our organs and tissues are exposed to radiation continuously. In order to avoid exposure to this radiation, some studies were carried out on protective clothing. In this study, radiation keeping properties of the fabrics coated with barite are examined. Radiation keeping properties were also determined by the method of image processing. After the experiments, it is determined that barite-coated fabrics absorb radiation better than normal fabrics.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 316-318
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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