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    Wyświetlanie 1-7 z 7
    Tytuł:
    Variation of leaf area index and leaf water potential of young dwarf apple trees under different irrigation methods
    Autorzy:
    Senyigir, U.
    Dagdelen, N.
    Askin, M.A.
    Kadayifci, A.
    Ucar, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/62620.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    yield
    variation
    leaf area index
    leaf water potential
    apple tree
    dwarf apple tree
    irrigation system
    Opis:
    In this research which was carried out inSuleymanDemirel University Research and Application Farm during 2007 and 2008 years, apple leaf area index (LAI) and leaf water potential (LWP) were observed in Jersey Mac (V1) and Williams Pride (V2) young apple varieties budded on M9 rootstock irrigated with different irrigation methods. Drip (D), subsurface drip (SD), surface (S) and undertree micro sprinkler (M) irrigation methods were used in the research. The amount of applied irrigation water was as much as 100% of Class A Pan evaporation measured during five days irrigation intervals. The amount of irrigation water was ranged between 348.3 (D, SD) – 1186 (S, M) mm depending on irrigation methods during the experimental years. Furthermore, maximum and minimum crop evapotranspiration values were determined as 426.1 (DV2) and 1334.7 (MV2) mm respectively. LAI values related to treatments ranged from 0.32 to 0.52 in 2007, 0.73 to 1.12 in 2008. LAI values increased by approximately 126.3% for all treatments. In both years, generally, the highest LAI values were observed in drip irrigation (D) for both varieties. Linear correlation (r=0.99, n=16) was obtained between fruit yields and leaf area index (LAI) values of the apple trees. Leaf water potential (LWP) measurements were repeated one day before and after irrigation during the irrigation period. The measurements were also conducted once along a day in the middle of the season. Changes in value of LWP were similar among the treatments.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2013, 1/III
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Role of Hydrostatic Pressure in Electrical Properties of Au/n-GaAs Schottky diodes with Substituted Polyaniline Interfacial Layer
    Autorzy:
    Özdemir, A.
    Abdolahpour Salari, M.
    Kökce, A.
    Uçar, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031654.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.40.Kp
    73.20.At
    74.62.Fj
    Opis:
    Au/polymer P2ClAn(H₃BO₃)/n-GaAs Schottky barrier diodes, where P2ClAn stands for poly(2-chloroaniline), have been fabricated. To fabricate Schottky diodes with polymer interface, n-type GaAs wafer was used. The P2ClAn polymer solution was applied on the front face of the n-GaAs wafer by a pipette. The P2ClAn emeraldine salt was chemically synthesized by using boric acid (H₃BO₃). Schottky diode parameters, such as ideality factor, barrier height and series resistance have been measured, as functions of hydrostatic pressure, using the current-voltage technique. The ideality factor values of Au/P2ClAn/n-GaAs Schottky barrier diodes have decreased from 3.38 to 3.01, the barrier height has increased from 0.653 to 0.731 eV at 0.36 kbar and series resistances were ranging from 14.95 to 14.69. The results obtained from I-V characteristics of Au/P2ClAn/n-GaAs Schottky barrier diodes show that pressure treatment improves the rectifying properties of the diodes. These diodes can be used as pressure-sensitive capacitors, due to pressure-dependence of diode parameters.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 1118-1121
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The operation parameters of an engine supplied with diesel oil and B20 fuel
    Wskaźniki pracy silnika zasilanego olejem napędowym i paliwem B20
    Autorzy:
    Ambrozik, T.
    Bozkir, M.
    Martinez, M. R.
    Ucar, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/133601.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    combustion engine
    exhaust gases emission
    operation parameters of the engine
    tłokowy silnik spalinowy
    emisja spalin
    wskaźniki pracy silnika
    Opis:
    The purpose of the paper is to compare selected operation parameters of an engine supplied with, respectively, commercial diesel oil and the B20 mixture (80 v/v % of diesel oil and 20 v/v % of rape oil fatty acid methyl esters). During the tests, the engine was running following the load characteristics at crankshaft rotational speed of 1750 rpm and 4000 rpm, respectively. The paper describes the test stand and block diagram of a system designed for measuring cylinder pressure, injection line pressure and injector operation control current. The emissions of nitrogen oxides, hydrocarbons, carbon monoxide and carbon dioxide were measured during the tests.
    Celem artykułu jest porównanie wybranych parametrów pracy silnika zasilanego handlowym olejem napędowym i mieszaniną B20 (80 % V/V oleju napędowego i 20 % V/V estrów metylowych kwasów tłuszczowych oleju rzepakowego). Podczas badań silnik pracował według charakterystyk obciążeniowych przy prędkościach obrotowych wału korbowego 1750 obr/min i 4000 obr/min. W artykule opisano stanowisko badawcze oraz schemat blokowy układu do pomiaru ciśnienia w cylindrze, ciśnienia w przewodzie wtryskowym i prądu sterującego pracą wtryskiwacza. Podczas badań mierzono emisję tlenków azotu, węglowodorów, tlenku węgla i dwutlenku węgla.
    Źródło:
    Combustion Engines; 2015, 54, 3; 1036-1041
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural Strength and Fatigue Life Calculation of Y32 Bogie Frame by Finite Element Method
    Autorzy:
    Ozsoy, M.
    Pehlivan, K.
    Firat, M.
    Ozsoy, N.
    Ucar, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402375.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.11.Fg
    46.50.+a
    Opis:
    In this study structural strength and fatigue life estimation of Y32 bogie frame were examined by finite element method. A static structural and fatigue life simulation were performed according to TS EN 13749 standard. The results of the static structural and fatigue life simulations depicted that Y32 bogie manufactured by Tuvasas achieved the regulations.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-327-B-329
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photovoltaic Panel Simulation Using a Mobile Application
    Autorzy:
    Kiriş, B.
    Bingöl, O.
    Uçar, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031878.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    88.40.-j
    88.40.H
    Opis:
    Today, the use of renewable energy resources is increasing rapidly because the solar energy is easily accessible and abundant. Solar energy is converted into electrical energy using photovoltaic panels. Photovoltaic panel is an energy source, which contains many solar cells, absorbing the solar energy. Factors affecting the operation of photovoltaic panels are the solar irradiance, the temperature, the surface, and the direction angle. For this reason, before employing a photovoltaic panel, the power values, which can be obtained from such photovoltaic panel should be analyzed and evaluated according to the application conditions, considering all these factors. In this study, calculation of power, current and voltage, generated by a photovoltaic panel, was performed on a mobile device for a determined region. Hourly, daily and monthly total power information, obtained according to the characteristics of the photovoltaic panel, such as panel position, direction and inclination, that can be obtained using the mobile device, are presented to the user by the developed application.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 922-925
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-Polynomial Spline Method for a Time-Dependent Heat-Like Lane- Emden Equation
    Autorzy:
    Caglar, S.
    Ucar, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1491458.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    02.30.Jr
    02.60.Lj
    02.70.Bf
    02.70.Jn
    44.05.+e
    Opis:
    In this study, a time-dependent heat-like Lane-Emden equation is solved by using a non-polynomial spline method. An example is solved to assess the accuracy of the method. The numerical results are obtained for different values (n) of equation. The results indicate that non-polynomial spline method is effectively implemented. It is seen that results are compatible with exact solutions and consistent with other existing numerical methods.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1; 262-264
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of perlite powders from Izmir, Türkiye region
    Autorzy:
    Aksoy, Özay
    Alyamaç, Elif
    Mocan, Merve
    Sütçü, Mücahit
    Özveren-Uçar, Nihan
    Özgür Seydibeyoğlu,, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2175435.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    perlite
    characterization
    expanded perlite
    particulate morphology
    mineralogy
    Opis:
    Perlite is an amorphous volcanic glass-type rock which is collected in open mines in various parts of the world. In this study, eight different perlite samples, supplied from the mines located in the Bergama, Izmir region, were used. The perlite samples were structurally, morphologically, and mineralogically characterized via a wide range of analytical techniques such as Thermogravimetric Analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) Surface Area Analysis, Optical Microscopy, Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), X-ray Fluorescence (XRF), and a liquid pycnometer. Platelet shaped-like structures were observed in the SEM analysis of the expanded perlites in contrast to the images of spongy or cracked expanded perlites reported in literature. The O-H bending and Si-O-Si vibrations (both asymmetric and symmetric stretching) of perlite structures were confirmed by FTIR. Highly amorphous phases with a rather low percentage of crystalline phases were observed by XRD. In the BET surface area analysis, expanded perlite materials exhibited higher surface area compared to unexpanded ones. A detailed characterization of perlite structures is essential as there is a significant potential to use these minerals in various biocomposite applications and it is useful to explain structure-property relationships in this class of materials.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 155277
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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