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Wyświetlanie 1-7 z 7
Tytuł:
Properties of Sound Panels Made from Recycled Footwear Treads
Autorzy:
Yildiz, F.
Parlar, A.
Parlar, Z.
Bakkal, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031925.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.55.Ti
43.55.Vj
81.05.Lg
81.05.Rm
Opis:
Natural resources have been decreasing with the large expansion of the world's population. In order to supply raw material for production, new recycling approaches should be developed for waste materials. Worn shoes is one of the most common waste products that can be recycled for this purpose. According to the record, shoes are very complex products, as they can be produced from forty different materials, like leather, rubber, polymers etc. Especially the bottom layers of the shoes are made from sound absorbing materials like polyurethane, thermoplastic rubber and PVC. Because today's technology is not able to separate these materials from each other during recycling, they should be used in a homogenised state. Thus these parts were shredded into small granules and mixed. PU binder and hot press were used to obtain samples for tests. In this paper sound absorption, sound isolation, vibration isolation and thermal insulation properties of the tread mixture are investigated. In addition to that, the mechanical properties of the material were also investigated by measuring the compression strength of the material.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 936-940
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on Magnetic Properties of Soft/Hard Magnetic Bilayers at Different Temperatures: a Monte-Carlo Study
Autorzy:
Değer, C.
Aköz, M.
Erkovan, M.
Yıldız, F.
Powiązania:
https://bibliotekanauki.pl/articles/1191754.pdf
Data publikacji:
2016-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Cc
21.60.Ka
Opis:
Soft/hard magnetic bilayers are attractive systems for investigating their physical behavior due to scientific curiosity and the potential for technological applications. Thus, 10 nm thick hard magnetic layer placed on a 20 nm soft magnetic layer was modeled in this work. After the constructing of magnetic thin films, the bilayer structure was simulated based on micro-magnetic modeling. When constructing the Hamiltonian of the system, magnetocrystalline anisotropy term was also under debate with classical Zeeman and exchange terms. Energy minimization in the simulation was performed using Metropolis algorithm and Markov Chain Monte Carlo (MC-MC) method. As a result of modeling, hysteresis curves, remanent magnetization and coercive fields were obtained at different temperatures.
Źródło:
Acta Physica Polonica A; 2016, 129, 4; 869-871
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Mechanical Activation on the Structure of Nickeliferous Laterite
Autorzy:
Tunç, T.
Apaydın, F.
Yıldız, K.
Powiązania:
https://bibliotekanauki.pl/articles/1399882.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Wk
61.43.Gt
91.60.Ed
Opis:
The lateritic nickel ore was activated mechanically in a planetary ball mill and mineralogical analyses of nickeliferous laterite have been studied by particle size analysis, scanning electron microscopy, X-ray diffraction, and the Fourier transform infrared spectroscopy. The results show that the activation procedure led to amorphisation, phase transformation and structural disordering in the laterite structure.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 349-351
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Moisture-dependent frictional and aerodynamic properties of safflower seeds
Autorzy:
Kara, M.
Bastaban, S.
Ozturk, I
Kalkan, F.
Yildiz, C.
Powiązania:
https://bibliotekanauki.pl/articles/26361.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
The seeds of two safflower cultivars were investigated in order to determine their frictional and aerodynamic properties as a function of moisture content. The coefficients of dynamic friction of cultivars on aluminium, plywood, fibreglass and steel surfaces increased by 87, 56, 78, and 129% for cv. Remzibey-05 seed, and by 91, 31, 71, and 131% for cv. Dinçer seed, respectively, between the initial and final moisture content levels. The terminal velocities of the Remzibey-05 and Dinçer seeds increased by 15 and 11%, respectively, with increase in moisture content between the initial and final levels.
Źródło:
International Agrophysics; 2012, 26, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stokes Shift and Band Gap Bowing in $In_xGa_{1-x}N$ (0.060 ≤ x ≤ 0.105) Grown by Metalorganic Vapour Phase Epitaxy
Autorzy:
Yildiz, A.
Dagdelen, F.
Aydogdu, Y.
Acar, S.
Lisesivdin, S.
Kasap, M.
Bosi, M.
Powiązania:
https://bibliotekanauki.pl/articles/1813499.pdf
Data publikacji:
2008-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.61.-r
78.20.-e
78.40.Fy
78.55.-m
Opis:
We presented the results of electrical and optical studies of the properties of $In_xGa_{1-x}N$ epitaxial layers (0.060≤x≤0.105) grown by metalorganic vapour phase epitaxy. Resistivity and Hall effect measurements of the samples were carried out at room temperature. Optical properties of the samples were characterized by photoluminescence and optical absorption spectroscopy. The comparison between the photoluminescence and the optical absorption measurements gives the Stokes shift. We explained the observed Stokes shift in terms of Burstein-Moss effect. The band gap versus composition plot for $In_xGa_{1-x}N$ alloys is well fitted with a bowing parameter of≈3.6 eV.
Źródło:
Acta Physica Polonica A; 2008, 113, 2; 731-739
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Workplace Violence: A Study of Turkish Workers
Autorzy:
Aytac, S.
Bozkurt, V.
Bayram, N.
Yildiz, S.
Aytac, M.
Akinci, F. S.
Bilgel, N.
Powiązania:
https://bibliotekanauki.pl/articles/90325.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
workplace violence
physical violence
psychological violence
Turkey
Opis:
This research was conducted to address the experience of workplace violence of Turkish workers from different sectors and to investigate the impact of the exposed violence on their psychological well-being. Data were collected anonymously with printed questionnaires from the volunteer participants and depended on self-reporting. The response rate was 79.0% (1708/2161). The prevalence of workplace violence was found to be 44.8%. The most common type was verbal violence together with mobbing (bullying). Victims of physical violence were mostly males, whereas females were found to be victims of verbal, psychological and sexual violence. Most cases did not result in legal action and the victims remained silent. Psychological well-being of exposed workers in terms of depression, anxiety and stress seemed to deteriorate. Workplace violence remains a silent epidemic in Turkey. Preventive measures against workplace violence and social support for violated workers do not exist.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 4; 385-402
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physico-chemical and biological activity of hawthorn (Crataegus spp. L.) fruits in Turkey
Fizykochemiczna i biologiczna aktywność owoców głogu (Crataegus spp. L.) w Turcji
Autorzy:
Ercisli, S.
Yanar, M.
Sengul, M.
Yildiz, H.
Topdas, E.F.
Taskin, T.
Zengin, Y.
Yilmaz, K.U.
Powiązania:
https://bibliotekanauki.pl/articles/11543262.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
physicochemical activity
biological activity
hawthorn
Crataegus
biochemical diversity
genotypic variation
fruit
fruit mass
anthocyanin
Turkey
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2015, 14, 1; 83-93
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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