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Wyszukujesz frazę "Sahin, M." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Spark Plasma Sintering of Boron Carbide Ceramics Using Metallic Silicon in Square Cross Section
    Autorzy:
    Cengiz, M.
    Sahin, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401426.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Ev
    Opis:
    B₄C ceramics were fabricated by spark plasma sintering (SPS) technique with 5 vol.% silicon as sintering additive. Optimization of SPS method production parameters for B₄C ceramics having geometries 50×50×5 mm, square cross section will be performed. The sintering process was carried out at different temperatures by applying 40 MPa of pressure under vacuum atmosphere. The effect of silicon additive, sintering temperature and different soaking times on density, vickers hardness, fracture toughness and microstructure were examined. The mechanical properties of the B₄C ceramics having silicon as additive were compared with the results of monolithic B₄C. The hardness and fracture toughness of the samples were evaluated by the vickers indentation technique. Microstructures of spark plasma sintered B₄C samples with different parameters in square cross section were characterized by using SEM technique.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1370-1372
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of bean genotypes from turkey resistance to common bacterial blight and halo blight diseases
    Identyfikacja odorności genotypów fasoli z Turcji na zgorzel bakteryjną i zarazę
    Autorzy:
    Donmez, M.F.
    Sahin, F.
    Elkoca, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/11542438.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Opis:
    Bean diseases caused by different pathogens reduce important yield and quality of beans in different bean growing regions in both Turkey and the other bean producing countries. In the present study, bacterial pathogens in the species of Pseudomonas savastanoi pv. phaseolicola (Burkholder) Garden et al. and Xanthomonas axonopodis pv. Phaseoli (Smith) Vauterin et al. causing economically important disease on bean plants growing in the commercial fields of Erzurum and Erzincan provinces located in the Eastern Anatolia region of Turkey has been isolated and identified. Totally thirty-six bean genotypes and two commercial cultivars commonly grown in the region have been screened for resistance to these pathogens both in greenhouse and field condition during 2001–2002. Disease severity in the field condition reduced seed quality and quantity of bean. Among the thirty-eight genotypes tested, only 36K was found to be resistant to both of the pathogens. Bean diseases caused by different pathogens reduce important yield and quality of beans in different bean growing regions in both Turkey and the other bean producing countries. In the present study, bacterial pathogens in the species of Pseudomonas savastanoi pv. phaseolicola (Burkholder) Garden et al. and Xanthomonas axonopodis pv. Phaseoli (Smith) Vauterin et al. causing economically important disease on bean plants growing in the commercial fields of Erzurum and Erzincan provinces located in the Eastern Anatolia region of Turkey has been isolated and identified. Totally thirty-six bean genotypes and two commercial cultivars commonly grown in the region have been screened for resistance to these pathogens both in greenhouse and field condition during 2001–2002. Disease severity in the field condition reduced seed quality and quantity of bean. Among the thirty-eight genotypes tested, only 36K was found to be resistant to both of the pathogens.
    Choroby fasoli spowodowane różnymi patogenami zmniejszają plon i jakość fasoli w różnych regionach, gdzie uprawia się tą roślinę, zarówno w Turcji, jak i innych krajach produkujących fasolę. W niniejszym badaniu wyizolowano i zidentyfikowano patogeny bakteryjne u gatunku Pseudomonas savastanoi pv. phaseolicola (Burkholder) Garden et al. and Xanthomonas axonopodis pv. Phaseoli (Smith) Vauterin et al. powodującego ekonomicznie ważną chorobę roślin fasoli rosnących na polach komercyjnych w prowincjach Erzurum i Erzincan znajdujących się w regionie Wschodniej Anatolii w Turcji. Przebadano ogółem trzydzieści sześć genotypów fasoli oraz dwie odmiany powszechnie uprawiane w tym regionie w latach 2002–2002 pod kątem ich odporności na te patogeny, zarówno w warunkach szklarniowych, jak i polowych. Nasilenie choroby w warunkach polowych zmniejszyło jakość i ilość nasion fasoli. Pośród trzydziestu ośmiu zbadanych genotypów, stwierdzono, że tylko 36K jest odporny na obydwa patogeny.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2013, 12, 4; 139-151
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Spark Plasma Sintering of Silicon Carbide Ceramics Using Alumina
    Autorzy:
    Unlu, M.
    Goller, G.
    Yucel, O.
    Sahin, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1216300.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Ev
    81.05.Je
    Opis:
    SiC ceramics were fabricated by spark plasma sintering technique with the use of $Al_2O_3$ additive. The sintering process was carried out at three different temperatures in the range of 1700-1800C applying two different pressures 40 and 80 MPa under vacuum atmosphere. The effect of additive, different temperatures and pressures on densification behaviour, density, Vickers hardness, fracture toughness, and microstructure were examined. The hardness and fracture toughness of the samples were evaluated by the Vickers indentation technique. Microstructure of spark plasma sintered SiC samples were characterized by using scanning electron microscopy technique. The highest value of fracture toughness $5.9 ± 0.2$ MPa $m^{1/2}$ was achieved with the addition of 5 vol.% $Al_2O_3$.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 257-259
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiation Shielding Properties of Spark Plasma Sintered Boron Carbide-Aluminium Composites
    Autorzy:
    Buyuk, B.
    Tugrul, A.
    Cengiz, M.
    Yucel, O.
    Goller, G.
    Sahin, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401941.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    25.20.Dc
    81.05.Je
    Opis:
    In this study gamma and neutron attenuation properties of boron carbide-aluminium (B₄C-Al) composites were investigated. B₄C-Al composites were produced by spark plasma sintering method. Aluminum percentages in the B₄C-Al composites were 0%, 10%, 15%, and 20% by volume. The composite materials were performed against gamma and neutron sources. Cs-137 and Co-60 gamma radioisotopes were used as gamma sources and Pu-Be neutron howitzer was used for neutron source. Theoretical mass attenuation coefficients were determined by using XCOM computer code and compared with the experimental results. It has been seen that the experimental results were close to the theoretical results. Total macroscopic cross-sections of the samples were determined for Pu-Be neutrons. It is concluded that increasing aluminum ratio in the B₄C-Al composites causes higher gamma attenuation behavior for Cs-137 and Co-60 gamma sources and the total macroscopic cross-sections of the B₄C-Al composites decrease by increasing Al concentration.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-132-B-134
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spark Plasma Sintering of Boron Carbide Ceramics Using Different Sample Geometries and Dimensions
    Autorzy:
    Cengiz, M.
    Yavas, B.
    Celik, Y.
    Goller, G.
    Yucel, O.
    Sahin, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1216387.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Ev
    81.05.Je
    Opis:
    $B_4C$ ceramics were fabricated by spark plasma sintering technique at 1700°C-1800C for 5 min under applied pressure of 50 MPa under vacuum atmosphere. Two different grades of $B_4C$ powder from H.C. Starck Company namely HP grade and HS grade were used in all related experiments. Effect of sample geometry and dimensions as well as sample thickness on sintering parameters were analyzed. Samples having 5 mm thickness and 50 mm diameter, 8 mm thickness in circular geometries and 50 × 50 square cross-section, 8 mm thickness were fabricated. Using the powder, which provided the densest sample, yttrium oxide $(Y_2O_3)$ was added, mixed and sintered. Optimization of SPS method production parameters for pure $B_4C$ samples and $B_4C$ samples with 5 wt% yttrium oxide additive were accomplished. The effect of geometry on density, Vickers hardness, fracture toughness, and microstructure were examined. The hardness and fracture toughness values of the samples were evaluated by the Vickers indentation technique.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 260-262
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Processing, Mechanical and Nuclear Characterization of Boron Carbide Ceramics Consolidated by Spark Plasma Sintering
    Autorzy:
    Cengiz, M.
    Ozer, S.
    Buyuk, B.
    Tugrul, A.
    Yucel, O.
    Goller, G.
    Sahin, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401969.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    25.20.Dc
    81.20.Ev
    Opis:
    Boron carbide (B₄C) ceramics were produced by spark plasma sintering technique with 5, 10, 15, and 20 vol.% aluminum (Al) in order to improve sintering behaviours of B₄C ceramics. B₄C ceramics were produced, having square cross-section and 50 × 50 × 5 mm³ dimensions. The sintering process was carried out at different temperatures by applying 40 MPa of pressure with 100°C/min under vacuum. The effects of various amounts of Al additive and sintering temperature on density, vickers hardness, fracture toughness and microstructure were examined. The hardness and fracture toughness of the samples were evaluated by the Vickers indentation technique. Microstructures of the samples were characterized by scanning electron microscopy technique. Fast neutron attenuation properties of the ceramics having highest density were also investigated.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-187-B-189
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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