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    Wyświetlanie 1-14 z 14
    Tytuł:
    Biosorption of Cu2+ and Ni2+ ions from aqueous solutions using waste dried activated sludge biomass
    Autorzy:
    Aslan, S.
    Yildiz, S.
    Ozturk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/777992.pdf
    Data publikacji:
    2018
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    adsorption
    copper
    nickel
    waste biomass
    Opis:
    Adsorption of Cu(II) and Ni(II) ions onto the waste powdered activated sludge biomass (PWB), which was obtained from the biological wastewater treatment plant, was investigated in this experimental study. The effects of contact time, pH, temperature, initial sorbate and sorbent concentrations on the adsorption were determined. The BET surface area, pore volume, and pore diameter of PWB were found to be about 0.51 m2/g, 0.0053 cm3/g, and 41.4 nm, respectively. Considering the R2  value, qexp  and qcal , the Langmuir and Freundlich models were well described for Cu(II) and Ni(II) adsorption, respectively. The adsorption mechanism of Cu(II) and Ni(II) onto the PWB could be better simulated by the pseudo-second-order kinetic mechanism than the pseudo-first-order, intra particle diffusion and Elovich models. Thermodynamic aspects of the adsorption of heavy metals were also investigated. Considering the applied desorbing agents for reuse of PWB for Ni(II) recovery, desorption cycle is not feasible due to the deterioration of the PWB structure.
    Źródło:
    Polish Journal of Chemical Technology; 2018, 20, 3; 20-28
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    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:
    Modeling the water absorption rate of wood impregnated with silicone-based chemicals using an artificial neural network
    Autorzy:
    Gurgen, A.
    Kilic, C.
    Yildiz, U.C.
    Yildiz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/52900.pdf
    Data publikacji:
    2019
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2019, 62, 204
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Antioxidant Activity, Phytochemicals and ESR Analysis of Lavandula Stoechas
    Autorzy:
    Ceylan, Y.
    Usta, K.
    Usta, A.
    Maltas, E.
    Yildiz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402526.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.66.Uv
    36.20.Kd
    39.30.+w
    33.35.+r
    Opis:
    The antioxidant activity of phytochemicals and of the methanolic extract of Lavandula stoechas was evaluated by β-carotene-linoleate bleaching, DPPH radical scavenging, ferric reducing/antioxidant power (FRAP). The obtained results were compared with antioxidant activities of synthetic antioxidants, such as BHT and BHA. The highest antioxidant activity of the extract was observed by DPPH radical scavenging assay, which was 84.45±5.1% at 1 mg ml¯¹. Rutin, rosmarinic acid, and caffeic acid were main phenolics in the extract. The total phenolic content of the methanolic extract of Lavandula stoechas was found to be 105.5±2.7 mg gallic acid equivalent (GAE). Electron spin resonance (ESR) measurements were also performed on the samples. Free radicals were determined by ESR method. g value was found to be 2.0034 for the Lavandula stoechas; 2.0052 for quercetin.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-483-B-487
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    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:
    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:
    Design of Istanbul disaster information system
    Autorzy:
    Torun, M. K.
    Korkmaz, N.
    Karaman, H.
    Yagci, A.
    Yildiz, S. S.
    Ozkan, A.
    Sahin, M.
    Tari, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/225748.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    klęski żywiołowe
    zarządzanie kryzysowe
    Turcja
    natural disasters
    crisis management
    Turkey
    Źródło:
    Reports on Geodesy; 2006, z. 5/80; 527-536
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of Excited-State Ionization Potentials for Lithium-Like Sequence Using Weakest Bound Electron Potential Model Theory
    Autorzy:
    Çelik, G.
    Yildiz, M.
    Kiliç, H. Ş.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047731.pdf
    Data publikacji:
    2007-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.10.-f
    31.50.-x
    Opis:
    In this work, the theoretical calculation of excited-state ionization potentials for 1s$\text{}^{2}$2$\text{}_{p}$ $\text{}^{2}$P$\text{}_{1}\text{}_{/}\text{}_{2}$ , 1s$\text{}^{2}$3$\text{}_{s}^{2}$S$\text{}_{1}\text{}_{/}\text{}_{2}$ , 1s$\text{}^{2}$3$\text{}_{d}^{2}$D$\text{}_{1}\text{}_{/}\text{}_{2}$ , 1s$\text{}^{2}$4$\text{}_{s}^{2}$S$\text{}_{1}\text{}_{/}\text{}_{2}$ , 1s$\text{}^{2}$4$\text{}_{p}^{2}$P$\text{}_{1}\text{}_{/}\text{}_{2}$ , and 1s$\text{}^{2}$4$\text{}_{d}^{2}$D$\text{}_{1}\text{}_{/}\text{}_{2}$ iso-spectrum series of lithium-like elements were carried out using a weakest bound electron potential model theory for nuclear charges from Z=3 to Z=18. The Breit-Pauli approximation was used for relativistic contributions. The obtained values are compared with the experimental results from literature. The overall agreement between data obtained in this work and experimental data from literature can appear to be quite good being generally within 0.1% of experimental values.
    Źródło:
    Acta Physica Polonica A; 2007, 112, 3; 485-494
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of methyl jasmonate application on bioactive contents and agro-morphological properties of strawberry fruits
    Autorzy:
    Gundogdu, M.
    Berk, S.K.
    Yildiz, K.
    Canan, I.
    Ercisli, S.
    Tuna, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/12699814.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Opis:
    In this study, methyl jasmonate were applied to strawberry cultivars, and the pomological and biochemical characteristics of the fruits were investigated. The highest increase in fruit weight was determined in the Honeoye cultivar and it was detected in the application of 0.50 mM MeJa according to the control group. When the organic acid contents of fruits were examined, it was determined that the dominant acid was citric acid and the maximum range (Control: 1.49 g kg⁻¹; 0.50 mM MeJa: 16.49 g kg⁻¹) was in the Seascape cultivar. When the ellagic acid content of the fruits was examined, the highest increase (Control: 13.350 mg 100 g⁻¹, 0.25 mM MeJa: 22.768 mg 100 g⁻¹) was found in the Sweet Ann cultivar. In this study, it was determined that appropriate concentrations of MeJa should be preferred in cultivation of strawberry and these concentrations affected the fruit quality parameters.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 4; 133-142
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of enzymatic effects on pit membranes using light and scanning electron microscopy
    Autorzy:
    Durmaz, S.
    Yildiz, U.C.
    Ozturk, M.
    Serdar, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/52338.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Tematy:
    investigation
    enzymatic effect
    pit membrane
    light electron microscopy
    scanning electron microscopy
    spruce wood
    permeability
    enzymatic treatment
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2016, 59, 198
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The determination of total protein, total soluble carbohydrate and pigment contents of some macroalgae collected from Gemlik-Karacaali (Bursa) and Erdek-Ormanli (Balikesir) in the Sea of Marmara, Turkey
    Autorzy:
    Dere, S.
    Dalkiran, N.
    Karacaoglu, D.
    Yildiz, G.
    Dere, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/47690.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    pigment
    seaweed
    Phaeophyta
    chlorophyll b
    Marmara Sea
    Turkey
    carotenoid
    Chlorophyta
    soluble carbohydrate
    macroalga
    chlorophyll c
    Rhodophyta
    chlorophyll a
    Gemlik-Karacaali
    protein
    Erdek-Ormanli
    Opis:
    In this study, 12 taxa from the Chlorophyta, Phaeophyta and Rhodophyta were collected from different depths at Gemlik-Karacaali and Erdek-Ormanlı. A total of 175 specimens from these divisions were used to determine Total Protein (TP), Total Soluble Carbohydrate (TSCH) and Chlorophyll a (Chl a), Chlorophyll b (Chl b), Chlorophyll c (Chl c), total carotenoid (Car) contents and Chl b/Chl a, Chl c/Chl a, Car/Chl a, Car/Chl b, Car/Chl c ratios. TP, TSCH and pigment contents varied significantly with respect to the algal taxa, stations and depth distribution. In addition, individual differences were important in all of the measured parameters. The maximum TP contents (0.94%–31.03%) were determined in some of the Rhodophyta. In some green seaweeds belonging to the genus Ulva L., the TP content was determined between 2.9%–28.1%. Lower TP contents were determined in Cystoseira barbata (Good) C. Agardh (1.1%–4.3%). In contrast to TP contents, TSCH values were very low; maximum TSCH were determined in Ulva species, as were protein contents. In conclusion, the variations in TP, TSCH and pigment in 12 taxa of macroalgae were analysed according to station, depth, and environment.
    Źródło:
    Oceanologia; 2003, 45, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    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:
    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 1-14 z 14

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