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    Wyświetlanie 1-7 z 7
    Tytuł:
    Impact of chemical and physical properties on flowability characteristics of corn distillers dried grains with solubles
    Autorzy:
    Pekel, A.Y.
    Calik, A.
    Kuter, E.
    Alatas, M.S.
    Oklen, S.B.
    Kizil, A.
    Bulat, M.
    Cengiz, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082879.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    angle of repose
    bulk density
    compressibility
    distillers dried grains with solubles
    flowability
    Opis:
    The influence of the physical and chemical composition of corn distillers dried grains with solubles on its flowability was evaluated in the current study. The samples were evaluated for angle of repose, compressibility, Hausner ratio, tapped density, bulk density, mean bulk density, colour and nutrient content. PROC CORR and REG procedures were used to determine correlations. The ether extract was negatively correlated with crude protein and redness (a*), while crude protein was negatively correlated with yellowness (b*). Acid detergent fibre and neutral detergent fibre were negatively correlated with a* and positively correlated with lightness (L*), respectively. Compressibility showed a negative correlation with bulk density. Bulk density, tapped density and mean bulk density did not impact the angle of repose. The angle of repose was positively correlated with the compressibility and Hausner ratio. Apart from the correlation between acid detergent fibre and tapped density, the angle of repose and other physical parameters were not affected by the nutrient composition of the distillers dried grains with solubles samples. In conclusion, the results of this study indicate that nutrient composition has little influence over the flowability of distillers dried grains with solubles but compressibility and the Hausner ratio can be used to predict the potential flow characteristics of corn distillers dried grains with solubles.
    Źródło:
    International Agrophysics; 2020, 34, 2; 195-202
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Examination of the change of the characteristic X-rays of the zinc in fluorine- and boron-doped ZnO thin films
    Autorzy:
    Söğüt, Ö.
    Kerli, S.
    Cengiz, E.
    Apaydın, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1050909.pdf
    Data publikacji:
    2018-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.30.Rj
    78.70.En
    32.30.-r
    32.80.Fb
    Opis:
    In this study, K_{β}/K_{α} X-ray intensity ratios of zinc in pure zinc, undoped ZnO thin film and boron and fluorine-doped ZnO thin films have been investigated. These samples have been excited by 59.5 keV γ-rays from a ^{241}Am annular radioactive source. K X-rays emitted by the samples have been counted using an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV. The K_{β}/K_{α} X-ray intensity ratios of the doped ZnO thin films have been compared with that of the undoped ZnO thin film. The deviations between the results can be explained by delocalization and/or charge transfer phenomena causing change in valence electronic configuration of zinc.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 5; 1124-1128
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation possibilities of chicken manure in Turkey
    Możliwości oceny odchodów kurzych w Turcji
    Autorzy:
    Baki Unal, H.
    Hakan Bayraktar, Ö
    Alkan, I.
    Cengiz Akdeniz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/956466.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    chicken manure
    waste management
    biogas
    energy
    odchody kurze
    gospodarka odpadami
    biogaz
    energia
    Opis:
    Pollution caused by industrial poultry production, which is increasing along with the population growth, is one of the most important environmental problems for developed and developing countries. Particularly in the countries which are leading in the world poultry farming, such as Turkey, share of poultry manure in animal waste is increasing day by day. Due to its amount and characteristics, problems posed by poultry waste are among the priority issues. According to data obtained in 2010, there were 70,933,660 laying hens and 163,984,725 broilers in Turkey and the estimated annual production of fresh manure exceeded 5 million tons. Therefore, development of waste management systems in order to reduce the environmental risks, has become extremely important for poultry industry. Chicken manure causes environmental problems, but also has a significant economic potential. Although there are country-specific methods for the evaluation of chicken manure, evaluation as fertilizer after composting is a common practice across the globe. Also using biogas obtained from waste for the production of energy is one of the common practices. Evaluation of broiler manure as fertilizer in agriculture or burning for heating, are some of the common methods used in Turkey. But in recent years, interest in modern methods such as production of biogas and converting biogas into electrical energy is increasing. In this study, widely used applications for the evaluation of poultry manure in Turkey and development studies of these methods have been examined extensively.
    Zanieczyszczenia pochodzące z przemysłowej produkcji drobiu, których ilość wzrasta wraz ze wzrostem populacji, jest jednym z najważniejszych problemów środowiskowych w krajach rozwiniętych i rozwijających się. Szczególnie w krajach, które przodują w hodowli drobiu, takich jak Turcja, udział odchodów kurzych w odpadach zwierzęcych rośnie z dnia na dzień. Ze względu na ilość i charakterystykę, problemy stwarzane przez odpady pochodzenia kurzego znajdują się wśród najważniejszych. Według danych z 2010, Turcja posiadała 70 933 660 kur niosek oraz 163 984 725 brojlerów a szacowana roczna produkcja świeżego nawozu przekraczała 5 milionów ton. Zatem, rozwój systemów gospodarki odpadami w celu zmniejszenia ryzyka środowiskowego stał się bardzo ważny dla przemysłu drobiowego. Odchody kurze są źródłem problemów środowiskowych, ale także posiadają istotny potencjał ekonomiczny. Mimo, że istnieją krajowe metody oceny odchodów kurzych, ich ocena jako nawozu po kompostowaniu jest popularną praktyką na całym świecie. Ponadto, popularną praktyką jest także zastosowanie biogazu otrzymanego z odpadów na cele energetyczne. Ocena odchodów brojlerów jako nawozu w rolnictwie lub źródła ciepła jest często stosowaną metodą w Turcji. Jednakże, w ostatnich latach, zainteresowanie nowoczesnymi metodami takimi jak produkcja biogazu i przekształcanie biogazu w energię elektryczną stale wzrasta. Niniejsza praca skupia się na gruntownej analizie oceny odchodów kurzych w Turcji i badań rozwojowych nad metodami oceny.
    Źródło:
    Agricultural Engineering; 2015, 19, 2; 5-14
    2083-1587
    Pojawia się w:
    Agricultural Engineering
    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:
    Grating-free high-x InP/InxGa1-xAs mid-wavelength infrared QWIP focal plane array
    Autorzy:
    Besikci, Cengiz
    Balcı, Saadettin V.
    Tanış, Onur
    Güngör, Oğuz O.
    Arpaguş, Esra S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2204209.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    infrared imaging
    quantum well
    infrared photodetector
    Opis:
    The authors report the characteristics of a diffraction-grating-free mid-wavelength infrared InP/In₀.₈₅Ga₀.₁₅As quantum well infrared photodetector focal plane array with a 640 × 512 format and a 15 µm pitch. Combination of a normal incident radiation sensing ability of the high-x InxGa1-xAs quantum wells with a large gain property of the InP barriers led to a diffraction-grating-free quantum well infrared photodetector focal plane array with characteristics displaying great promise to keep the status of the quantum well infrared photodetector as a robust member of the new generation thermal imaging sensor family. The focal plane array exhibited excellent uniformity with noise equivalent temperature difference nonuniformity as low as 10% and a mean noise equivalent temperature difference below 20 mK with f/2 optics at 78 K in the absence of grating. Elimination of the diffraction-grating and large enough conversion efficiency (as high as ~70% at a -3.5 V bias voltage) abolish the bottlenecks of the quantum well infrared photodetector technology for the new generation very small-pitch focal plane arrays.
    Źródło:
    Opto-Electronics Review; 2023, 31, Special Issue; art. no. e144563
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    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 1-7 z 7

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