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    Wyświetlanie 1-9 z 9
    Tytuł:
    Properties of ZnO Nanopowders Synthesized by Glycine-Nitrate Gel Combustion
    Autorzy:
    Yıldız, Ö.
    Soydan, A.
    Ipçizade, E.
    Akın, D.
    Uçak, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311836.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Ka
    81.07.Wx
    61.46.Df
    81.07.-b
    Opis:
    The morphology and other physical properties of ZnO nanopowders synthesized by glycine-nitrate gel combustion process were investigated and characterized by scanning electron microscopy, transmission electron microscopy, nanosizer and X-ray diffraction. Glycine, $NH_2CH_2COOH$, and zinc nitrate $Zn(NO_3)_2$·$6H_2O$ were dissolved in distilled water and the solution was coagulated by mixing at 90°C. The viscous gel prepared during glycine-nitrate mixing was heated at ≈220C to initiate the exothermic reactions by self-combustion where the temperature reached up to 1200°C. The glycine-nitrate ratio had a significant effect on the reaction temperature and final particle morphology. Therefore the synthesized powders have a different morphology like formless and spherical tufa ash. The particle size distribution was 50-1200 nm as measured using a nanosizer.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 664-666
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural Analysis of Ce Doped $La_{1-x}Sr_xCo_{1-y}Fe_yO_{3-δ}$ Nanopowders Synthesized by Glycine-Nitrate Gel Combustion
    Autorzy:
    Yildiz, Ö.
    Soydan, A.
    Ata, A.
    İpçızade, E.
    Akin, D.
    Uçak, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312023.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.07.Wx
    81.07.-b
    81.20.Ka
    88.30.pn
    Opis:
    Ce doped $La_{1-x}Sr_xCo_{1-y}Fe_yO_3$ (LCSCF) is a widely used cathode material due to its high catalytic activity for oxygen reduction and high oxygen exchange coefficient. LCSCF is also known with its high ionic and electronic conductivities and low electrode polarization losses which are highly critical properties for low temperature solid oxide fuel cell applications. In this study, structural properties of the LCSCF cathode nanopowder materials synthesized by glycine-nitrate gel combustion have been investigated by X-ray diffraction, differential scanning calorimetry, scanning electron microscopy, and nanosizer. Synthesized nanopowders represent volcanic ash like structures and morphologies. Ce, Sr, Co, and Fe are found to have significant effects on the structural properties of powders in terms of powders morphology, agglomerate structure, crystallite size and also lattice parameter of perovskite crystal. All synthesized ash powders have particle sizes around 50-600 nm, varying crystalline structures of perovskite and fluorite depending on molar ratio of Ce in the composition. Increasing molar Ce ratio over 0.4 is found to lead to the formation of a separate nano ceria phase in fluorite crystal structure on the surface of the synthesized powder.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 669-672
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Properties of Ceria Based Novel Anode Nanopowders Synthesized by Glycine-Nitrate Process
    Autorzy:
    Yıldız, Ö.
    Soydan, A.
    Ata, A.
    Tunaboylu, B.
    Akın, D.
    İpcizade, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399974.pdf
    Data publikacji:
    2013-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.47.Ed
    81.07.Wx
    81.20.Ka
    81.20.Ev
    81.05.Mh
    61.46.Df
    Opis:
    Novel anode nanopowder materials consisting of ceria-based components synthesized by glycine-nitrate process were investigated for solid oxide fuel cells. Glycine-nitrate process involves a self-combustion reaction at 220C of water-based nitrate and glycine solutions which subsequently can reach up to 1200°C. The resulting morphology, the size of particles and the formation of crystalline phases were characterized by differential scanning calorimetry, X-ray diffraction, transmission electron microscopy, scanning electron microscopy, the Brunauer-Emmett-Teller method and Nanosizer. It was determined that dopants in ceria such as Co, Ni, Cu, V and Fe had significant effect on the morphology and size. The size distribution measured by Nanosizer was 50-600 nm, transmission electron microscopy, 5-200 nm and the Brunauer-Emmett-Teller method 100-120 nm and specific surface area of powders in the range 67.45-72.05 $m^2 g^{-1}$ as measured by the Brunauer-Emmett-Teller method. Particles were observed to have spherical structures for Cu and Fe doped powders and rod-shaped in a porous tuff microstructure for those doped with Co and Ni. Vanadium doping helped to decrease the porosity and initiated the process of spheroidization of particles.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 2; 432-435
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occupational Issues and Expectations of Turkish Deck Cadets
    Autorzy:
    Yıldız, S.
    Uğurlu, O.
    Yüksekyıldız, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/116025.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime education and training (MET)
    seafarers in Turkey
    Turkish Deck Cadets
    deck cadets
    STCW 2010 Manila Amendments
    STCW convention
    International Labour Organization (ILO)
    MLC 2006 convention
    Opis:
    Seafaring is one of the world's most difficult professions. Seafarers have to face with many negative factors while they are at sea. These negative factors, makes the seafaring profession difficult to be preferred. Fatigue, stress, heavy weather conditions and lack of communication are some of these factors that affect seafarer’s occupational continuity and also make contribution to occurrence of marine accidents. Cadet is one of the seafarers who will be a navigation officer and captain in the near future. That’s why cadets have a significant role in maritime industry. Theoretical and practical training of cadets is very important. Purpose of this study was to examine deck cadets’ training conditions and difficulties they have to face with during their training period. In order to identify these difficulties, render their lives during trainings easier, and establish their expectations, questionnaire conducted with 618 deck cadets. Interviews were carried out with 3 trainers and 10 maritime companies that have substantial shares in Turkey’s maritime trade. As a result of this study identified factors that increase fatigue mostly, reduction measures have been exposed and have tried to offer solutions. This study is an advisory to improve the occupational continuity of cadets in the profession.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 403-408
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the use of flaked maize in diets with reduced metabolic energy on performance, egg quality, and serum parameters in layer quails
    Autorzy:
    Olgun, O.
    Senturk, E.T.
    Yildiz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2119525.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Zootechniczne
    Tematy:
    quail
    flaked maize
    egg quality
    metabolizable energy
    performance
    serum parameter
    Opis:
    The research was conducted to determine the effects of substituting raw maize with flaked maize in diets containing different levels of metabolic energy on the performance, egg quality, and serum parameters of layer quails. In the experiment, 120 female quails at ten weeks of age were randomly allocated to six treatment groups with four replicates, each consisting of five quails. The quails were fed six diets, with two forms of maize (raw or flaked) and three metabolic energy levels (2750, 2825 or 2900 (control) kcal/kg) during a ten-week trial. Compared with the control group, reducing the metabolic energy level of the diet to 2750 kcal/kg negatively affected egg production (P < 0,01), egg mass (P < 0,01), feed conversion ratio (P < 0,01), and serum cholesterol concentration (P < 0,05). Eggshell thickness decreased significantly in the group receiving 2750 kcal/kg metabolic energy in the diet, and the yolk b* value increased significantly (P < 0,01). The use of flaked maize in the diets significantly increased egg production (P < 0,05), egg mass (P < 0,05), eggshell thickness (P < 0,05), and yolk L* value (P < 0,01) and significantly decreased the feed conversion ratio (P < 0,05) and b* value of the yolk (P < 0,05). Although the effects of the interactions of the metabolic energy levels and forms of maize on the egg yolk b* value were significant (P < 0,01), this effect was not significant for the other parameters. The results indicate that layer quails can be fed diets containing 2825 kcal/kg metabolic energy and that replacement of raw maize with flaked maize in the diet positively affects performance and egg quality.
    Źródło:
    Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego; 2021, 17, 2; 41-52
    1733-7305
    Pojawia się w:
    Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anti-inflammatory activity of Turkey source pumpkin seed oil in rat oedema model
    Autorzy:
    Arslanbaş, Emre
    KARA, Haki
    KARAYİĞİT, Mehmet Ö.
    DOĞAN, Halef O.
    YILDIZ, Şeyma N.
    Powiązania:
    https://bibliotekanauki.pl/articles/895458.pdf
    Data publikacji:
    2020-04-29
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    rat
    Anti-inflammatory
    carrageenan
    indomethacin
    pumpkin seed oil
    oedema model
    Opis:
    This study aimed to determine the effects of Turkey-sourced pumpkin seed oil (PSO), administered orally to rats in different dosages, to research its anti-inflammatory effect in rat oedema model, induced by carrageenan, based on different dosages, and to evaluate its effects comparatively with indomethacin. The study was conducted on 42 rats in total, divided into 7 groups (control, carr, PSO40, PSO100, PSO40+carr, PSO100+carr and indo+carr). In the study, doses of 40 and 100 mg/kg of PSO were found to significantly suppress rat paw oedema in time, and it was observed that this effect was more pronounced in the fourth hour. It was found that MDA and cytokine (TNF-α, IL-6, IL-1β) levels were inhibited, and GPX and SOD activities were enhanced in groups that received PSO and indo+carr groups. Histopathological examinations also support these findings. As a result of the study, the significant anti-inflammatory effect of Turkey-sourced PSO was attributed to the existence of unsaturated fatty acids and enriched phytochemical compounds.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 2; 305-312
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of tilmicosin and diclofenac sodium combination on cardiac biomarkers in sheep
    Autorzy:
    Yildiz, R.
    Durna Corum, D.
    Corum, O.
    Ider, M.
    Atik, O.
    Ok, M.
    Uney, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/16647447.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    cardiotoxicity
    diclofenac
    H-FABP
    sheep
    tilmicosin
    Opis:
    The aim of this study was to investigate the cardiotoxic effect of the combination of tilmicosin and diclofenac sodium in sheep. Thirty-two sheep were used and were randomly divided into four equal groups as tilmicosin (T), diclofenac sodium (D), tilmicosin+diclofenac sodium (TD) and control (C) group. Group T received a single dose of tilmicosin, Group D was administered diclofenac sodium once a day for 3 days, and group TD was administered diclofenac and tilmicosin at the same doses as group T and D. Group C received NaCl in a similar way. The blood samples were taken before dosing and at 4th, 8th, 24th and 72nd hour post-dosing for measurement of cardiac markers such as H-FABP, cTn-I, CK-MB. H-FABP level of group TD was found to be significantly (p<0.05) higher than of group C at the 8th, 24th and 72nd hour and group D and T at the 72nd hour. cTn-I and CK-MB levels of group TD were found significantly (p<0.05) higher compared with other groups. In conclusion, the combined use of tilmicosin and diclofenac in sheep causes an increase in cardiac biomarkers and it can be stated that this combination of drugs may cause cardiac damage.
    Źródło:
    Polish Journal of Veterinary Sciences; 2023, 26, 1; 5-12
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some bioactive properties of Acacia dealbata extracts and their potential utilization in wood protection
    Autorzy:
    Yildiz, S.
    Gurgen, A.
    Can, Z.
    Tabbouche, S.A.
    Kilic, A.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/52367.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2018, 61, 202
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aminoethoxyvinylglycine and foliar zinc treatments play a key role in pre-harvest drops and fruit quality attributes of 'William's Pride' apple
    Autorzy:
    Ozturk, B.
    Yıldız, K.
    Erdem, H.
    Karakaya, O.
    Ozturk, A.
    Aglar, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/12303649.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    apple tree
    William's Pride cultivar
    apple cultivar
    foliar treatment
    pre-harvest application
    zinc application
    aminoethoxyvinylglycine
    Opis:
    Productivity of plants is determined by multiple factors that directly affect one another, therefore yield variability may be high and difficult to predict. Most often, however, a lower crop yield is achieved in the notillage system than in the ploughing system. An exact field experiment was undertaken to determine the yield and chemical composition of pea seeds sown under conditions of: 1) conventional tillage – CT (shallow ploughing and harrowing after the harvest of previous crop, pre-winter ploughing in winter); 2) reduced tillage – RT (stubble cultivator after the harvest of previous crop); and 3) herbicide tillage – HT (only glyphosate after the harvest of previous crop). A cultivation unit was applied on all plots in the springtime. Pea seed yield was higher by 14.1% in the CT than in the RT system and by 50.5% than in the HT system. The CT system was increasing the plant number m–2, number of pods and seeds m–2, seed mass per plant, and 1000 seeds mass, compared to the other systems. Protein content of seeds was at a similar level in all analyzed tillage systems, but was affected by the study year. In turn, the mineral composition of seeds was determined by both tillage system and study year. The seeds harvested from CT plots contained more phosphorus and iron, those from RT plots – more calcium and zinc, whereas those from HT plots – more phytate-P, potassium, magnesium, and copper, compared to the seeds from the other plots.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 147-158
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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