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    Wyświetlanie 1-41 z 41
    Tytuł:
    Epidemiological characteristics, seasonality, trends of dog bite injuries, and relationship with meteorological data
    Autorzy:
    Yılmaz, S.
    Delice, O.
    Yılmaz, S.İ.
    Powiązania:
    https://bibliotekanauki.pl/articles/28761705.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2023, 30, 2; 229-234
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Naturally and Synthetically Derived Hydroxyapatite Powders
    Autorzy:
    Yelten, A.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032536.pdf
    Data publikacji:
    2017-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Fw
    Opis:
    Hydroxyapatite (HA) constitutes the mineral component of the hard tissues such as bone and teeth. HA is a bioactive ceramic material and can form biochemical bonds with tissues. It is possible to produce HA powders either from natural sources or by using synthetic chemicals. Wet chemical precipitation technique is an ideal method to practically and economically synthesize HA powders. Calcium hydroxide (Ca(OH)₂) and ortho-phosphoric acid (H₃PO₄) solutions were used as the calcium and phosphorus sources to obtain the HA powders. Acid-alkaline reactions between starting materials were carried out at three different reaction temperatures (room temperature, 50-60°C range and 70-80°C range) which may affect the microstructure of the produced powders. The procedure of HA powders preparation from natural sources consists of several steps: in the order of deproteinization of bovine bones in NaOH, washing the deproteinized bovine bones, calcination of the washed bones, and grinding the calcined bones, respectively. In this study, HA powders derived from bovine bones and HA powders obtained through the wet chemical precipitation method were compared in terms of their chemical, microstructural and molecular bonding properties by applying various characterization techniques such as X-ray diffraction, scanning electron microscope-energy dispersive spectroscopy, and the Fourier transform infrared spectroscopy.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 1; 55-58
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Granite Based Glass-Ceramic Materials
    Autorzy:
    Bayrak, G.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194689.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.43.Fs
    62.20.-x
    61.05.cp
    Opis:
    In this study, production possibility of glass and glass-ceramic produced from granite was investigated. The composition of granite based glass bath mixture was 50 wt% granite, 25 wt% dolomite and 25 wt% sodium carbonate. Composition that was grounded and mixed in a ball mill for 2 h was melted at 1500C for 1 h. Glass samples were heat treated for crystallization to produce glass-ceramic materials at 800°C, 900C and 1000C for 2 h to promote internal crystallization. Phase identifications of glass and glass-ceramic materials were investigated by X-ray diffraction analysis. Moreover, hardness and fracture toughness measurement of glass and glass-ceramic materials were applied. Granite based materials after that melting and casting process was found amorphous state by characterization with X-ray diffraction analysis. After the heat treatment processes, crystal phases settled out in glass matrix were also determined in granite based materials. Moreover, values of hardness and fracture toughness increasing were detected by heat treatment schedule.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 623-625
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sintering Behavior and Machinability in Mica Glass-Ceramic of the System $SiO_2-Al_2O_3-MgO-K_2O-B_2O_3-F$
    Autorzy:
    Ercenk, E.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293704.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    68.37.Hk
    81.20.Ev
    81.20.Wk
    81.05.Je
    81.05.Mh
    Opis:
    Mica glass-ceramic was prepared by sintering method from in the $SiO_2-Al_2O_3-MgO-K_2O-B_2O_3-F_2$ system. The sintering behavior and machinability of a glass-ceramic composition were examined. The starting materials were mixed and milled in an alumina ball mill for 2 h. Then the powders were sieved to obtain grain sizes smaller than 75 μm. For the shaping process, disc samples were prepared by pressing at 100 MPa. The pressed discs were sintered at temperatures in the range from 900 to 1200C for 2 h in an electric furnace using a heating rate of 5°C/min. X-ray diffraction analysis, scanning electron microscopy, and machinability tests for characterization were performed on sintered samples. The results showed that all samples exhibited similar phases formation and good machinability.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 629-631
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of CBC and G-POSS on Tribological Behaviour of Polyamide 6 and Short Glass Fiber Reinforced Polyamide 6 Composites
    Autorzy:
    Gul, O.
    Yilmaz, S.
    Yilmaz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194067.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.40.Pq
    81.05.Qk
    Opis:
    In this study, effect of glycidylisobutyl oligomeric silsesquioxane (G-POSS) and 1.1'-carbonyl-bis-caprolactam (CBC) (1 wt.%) on the friction and wear performance of polyamide 6 (PA6) and short glass fiber (SGF) (10 and 20 wt.%) reinforced PA6 composites were investigated. Adhesive wear tests were carried out by using a tribometer in block-on-ring configuration (ASTM G77), in sliding conditions, without lubricants and in air. Tests were carried out at sliding speed of 1.6 m/s (511 rpm) and applied load values of 25, 50 and 75 N. Wear rate was calculated using weight loss per unit sliding distance. The results showed that, the friction force increases with the increasing load. It was found that the wear resistance of PA6 improved considerably after doping with CBC.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1121-1123
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Friction and Wear Properties of Plasma Sprayed YSZ/Ni-Cr-Al Coated 6063-T6 Aluminum Alloy
    Autorzy:
    Erzi, E.
    Dispinar, D.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/383089.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    mechanical properties
    abrasive wear
    plasma spraying
    YSZ coating
    stop aluminium
    właściwości mechaniczne
    zużycie ścierne
    natryskiwanie
    powłoka YSZ
    Opis:
    In this study T6 heat treated 6063 aluminum alloys were used as substrate material. In order to form a bond between the substrate and the main coating, all samples were coated with Ni-Cr-Al powders. 8 wt% Yttria Stabilized Zirconia powders (YSZ) were coated with plasma spray technique. Thickness of YSZ was 150 m and bond coating was 36 m. XRD and SEM-EDS analyses were performed to characterize the coating layers. These YSZ coated and uncoated samples were subjected to wear testing under different spindle speed, loading and working distance. Wear test results were compared with the kinetic friction coefficients and weight loss values. Wear marks on YSZ coated and uncoated samples were investigated by SEM analysis. By coating with plasma spray technique, the wear resistance of Al alloys was increased without changing the friction coefficient. It was found that spindle speed had significant effect over the wear properties than the load applied. By YSZ coating, wear properties were increased 10 times.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 168-174
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of Machinable Glass-Ceramics Produced from Vermiculite
    Autorzy:
    Önen, U.
    Ercenk, E.
    Yılmaz, Ş.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033368.pdf
    Data publikacji:
    2017-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Pj
    Opis:
    In this study, machinable glass-ceramics were produced from vermiculite and K₂CO₃, SiO₂, Al₂O₃ and MgF₂ as additives by melting process. The starting materials were mixed together and milled in a mill with alumina ball for 2 h. The mixed powders were melted by aluminum crucible at 1500°C. The melted glass was cast into graphite mold, and then it was exposed to crystallization heat treatment for glass-ceramic transformation. The glass-ceramic samples were characterized with X-ray diffraction analysis, scanning electron microscopy, mechanical tests such as hardness, fracture toughness and machinability test. The results indicate that machinability properties can be obtained from vermiculite based glass-ceramic with some additives.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 1; 168-170
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sintering Behavior and Machinability Properties of Industrial Waste Materials Based Glass-Ceramics
    Autorzy:
    Bayrak, G.
    Ercenk, E.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401375.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.43.Fs
    81.05.Je
    81.05.Mh
    81.20.Ev
    81.20.Wk
    Opis:
    Glass-ceramics were produced by sintering method from industrial waste materials such as fly ash, blast furnace slag and boron waste. The sintering behavior and machinability of glass-ceramic compositions were investigated. Additives were added to waste materials for enhancement of machinability and sintering properties. All starting materials were mixed by ball milling for 2 h using alumina media. The mixed and milled powders were sieved to grain sizes smaller than 75 μm and pressed at 100 MPa. The pressed samples were sintered at 900°C, 1000°C and 1100°C for 1 h in an electric furnace using a heating rate of 5°C/min. Some characterization tests such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and machinability tests were performed on sintered samples. The results indicated that all samples exhibit good sintering and machinability properties.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1346-1348
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Perlite Addition on Erosive Wear Behavior of Alumina Ceramics
    Autorzy:
    Tas, S.
    Ercenk, E.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1182871.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Je
    81.05.Mh
    46.55.+d
    62.20.F-
    81.20.Ev
    Opis:
    In this study, the effects of perlite addition on mechanical properties and wear resistance of alumina ceramics were investigated. Alumina powders including perlite 5%, 10%, 15%, 20% and perlite free were prepared. These powders were shaped as rectangular by using uniaxial pressing system under the load of 100 MPa. The samples were sintered at 1400°C-1550C for 2 h and were subjected to some mechanical tests such as hardness and fracture toughness. X-ray diffraction analysis was employed to determine the crystalline phases. Bulk densities of the samples were measured. In addition, erosive wear test was performed to investigate the erosive wear resistance of the samples. The wear test results were presented depending on different sliding speed and sintering temperature. These results showed that perlite addition has a positive effect on erosive wear resistance of the alumina ceramics, generally.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 632-634
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Wear Properties of FeCrC, FeW and Feti Modified Iron Based Alloy Coating Deposited by PTA Process on AISI 430 Steel
    Mikrostruktura i właściwości zużycia modyfikowanych powłok stopowych na bazie żelaza FeCrC, FeW i FeTi nakładanych metodą PTA na stal AISI 430
    Autorzy:
    Teker, T
    Karataş, S.
    Yilmaz, S. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/355642.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    PTA
    AISI 430
    surface coating
    ferrytyczna stal AISI 430
    powłoka kompozytowa
    Opis:
    The plasma transferred arc (PTA) process was used for developing wear resistance of AISI 430 steel substrate. Appropriate quantities of FeCrC, FeW and FeTi powders were combined to create conditions that synthesized M7C3 particles into reinforced Fe-based composite surface coating. The phase transformations on new created coated surfaces were comprehensively examined by using a combination of scanning electron microscopy (SEM), microanalysis by energy dispersive spectrometry (EDS), X-Ray diffraction (XRD), microhardness and abrasive wear tests. The microstructure studies of the superficial layers of the coating revealed presence of a mixture of the dendritic phase structure of austenite (γ) and fine eutectic M7C3 carbides. The results show that; the concentrations of the elements (Cr, W, Ti) added as ferroalloys, the size of dendrites formed in the coated surface, the change of hardness of the coated surfaces, the carbide volume rate and thickness of the coating changed by the variation of the processing parameters (ratio of reinforcement particulates and heat input).
    Technika PTA została zastosowana jest do podwyższania odporności na zużycie podłoży ze stali AISI 430. Odpowiednie ilości proszków FeCrC, FeW i FeTi połączono w celu stworzenia warunków, w których syntetyzowane są cząsteczki M7C3 zbrojące powłoki kompozytowe na bazie Fe. Przemiany fazowe w nowo utworzonych powlokach zostały szczegółowo zbadane za pomocą kombinacji skaningowej mikroskopii elektronowej (SEM), mikroanalizy spektrometrią dyspersji energii (EDS), dyfrakcji rentgenowskiej (XRD), mikrotwardości i testów ścierania. Badania mikrostruktury wierzchnich warstw powłoki wykazały obecność mieszaniny struktury dendrytycznej austenitu (γ) i drobnych eutektycznych węglików M7C3. Wyniki pokazują, że: stężenie pierwiastków (Cr, W, Ti) dodanych jako żelazostopów, wielkość dendrytów utworzonych w powłoce, zmiany twardości powłoki, szybkość objętościowa węglików i grubość powłoki zmieniają się ze zmianą parametrów procesu (stosunek cząstek wzmacniających i mocy cieplnej).
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 3; 925-933
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bond Strength of Basalt Based Glass-Ceramic Coatings
    Autorzy:
    Bayrak, G.
    Ercenk, E.
    Sen, U.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194582.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.43.Fs
    62.20.-x
    61.05.cp
    Opis:
    In the present study, powders produced from the volcanic basalt rocks were coated on pre-coated AISI 1040 steel with Ni-5% Al bond coat by atmospheric plasma spray coating technique. The coated specimens were characterized by optical microscopy, scanning electron microscopy, metallography and X-ray diffraction. Bonding strength of coatings was evaluated in accordance with the ASTM C-633 method. Coated basalt material from the APS coating system was determined in the glassy amorphous state by X-ray diffraction analysis. The coated samples were heat-treated at 800C for 1-4 h for crystallization. The phases formed in the basalt base glass-ceramic coatings were augite, Fe-diopside, anorthite, and andesine which were detected by X-ray diffraction analysis. Basalt based glass-ceramic coatings include splat, porosity and un-melted particles which were the characteristic of plasma sprayed coatings. Experiment result showed that the crystallization time increase caused the decrease of the bond strengths of the coatings.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 620-622
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermomechanical and Solid Particle Erosion Behaviour of CaCO₃ and SGF (Short Glass Fibre) Reinforced ABS/PA6 Composites
    Autorzy:
    Şahin, A.
    Yılmaz, S.
    Yılmaz, T.
    Sınmazçelik, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401281.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Qk
    83.85.Vb
    91.40.Dr
    Opis:
    In this study we have investigated thermomechanical and solid particle erosion behaviour of ABS/PA6 composites reinforced with CaCO₃ particles and SGF. ABS/PA6 composites were reinforced with CaCO₃ particles and SGF at different weight ratios (0, 10, 30, 15/15 wt.%). Composite materials were manufactured by twin screw extruder and injection molding machine. Thermomechanical properties were investigated by dynamic mechanical analysis (DMA) method. Moreover erosion wear behaviour was investigated on solid particle erosion test machine. Experimental results show that thermomechanical properties significantly depend on particle types and weight ratios. While storage modulus was found to be maximum for 30 wt.% SGF-reinforced samples, the loss modulus was found to be maximum for 15/15 wt.% hybrid samples. Moreover minimum loss factor values were found for hybrid samples, but glass transition temperature of samples were not effected significantly with CaCO₃ and SGF reinforcement. Erosion behaviour depends on particle impact angle, the type of reinforcing particles and their weight ratios. Maximum erosion rates were found at impingement angle of 30° for 30 wt.% CaCO₃-filled samples. According to experimental results both CaCO₃ and SGF reinforcement have positive influence on thermomechanical properties. However CaCO₃ and SGF reinforcement have reduced the solid particle erosion resistance of ABS/PA6 composites.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1062-1064
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Impact Angle of the Particle on Solid Particle Wear Properties of Basalt Base Glass-Ceramics
    Autorzy:
    Öztürk, M.
    Günay, U.
    Ercenk, E.
    Yilmaz, Ş.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033364.pdf
    Data publikacji:
    2017-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.-t
    81.40.Pq
    Opis:
    In this study, the effect of impact angle of the particles on solid particle erosive wear properties of basalt base glass-ceramics used for industrial applications was investigated. Commercial basalt glass-ceramic materials size of 20×20×3 cm was sectioned to the size of 5×5×1.2 cm. The experimental procedure was performed by using erosive wear test device with nozzle diameter of 0.78 cm. Na feldspar size of 300 μm was used as erosive media. The samples were fixed 2 cm distance from the nozzle, Na feldspar particles were sprayed by using 1.5, 3, 4 bar pressure for 20 s. The tests were repeated with 30°+45°+60°+75°+90° impact angles. The erosive wear rates were measured and the effect of particle impact angle on wear properties was determined.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 1; 171-173
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Glass and Glass-Ceramics Produced from Fly Ash and Boron Waste
    Autorzy:
    Ercenk, E.
    Sen, U.
    Bayrak, G.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1181592.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.43.Fs
    64.70.P-
    61.05.cp
    81.70.Pg
    62.20.Qp
    Opis:
    In the current study, the effect of boron waste addition on some properties of fly ash based glass and glass-ceramics were investigated. The powder compositions including 10, 30, and 50 wt% boron waste was prepared. All the investigated compositions were melted at 1500C by using electrical furnaces. Melting structures were cast into the graphite mold. Thus, fly ash-boron waste based glass materials were produced. To transform the glass-ceramic, crystallization process was performed. Crystallization and glass-transition temperatures were determined by differential thermal analysis. Highly dense and crystalline materials, predominantly composed of diopside and augite together with tincalconite and residual glassy phase, were detected by X-ray diffraction analysis after heat treatment at 800, 900, and 1000C for 1 h. For the glass and glass-ceramic samples, mechanical tests such as hardness and fracture toughness were realized. A boron waste addition has a positive effect on the hardness of the specimens unlike the fracture toughness results. Furthermore, produced glass-ceramic materials were characterized via scanning electron microscopy.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 626-628
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of nut shell addition on the permeability of a crushed gold ore
    Autorzy:
    Yilmaz, S.
    Sirkeci, A. A.
    Bilen, M.
    Yigit, I.
    Kizgut, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/110544.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    permeability
    nut shells
    heap leaching
    gold leaching
    leach efficiency
    Opis:
    In this study, variations in permeability of a gold ore by nut shell addition was studied. Ore particle size, nut shell size and volume fraction in the ore were the parameters investigated. Permeability is an important issue in heap leach operations considering the processing duration. Particularly below 6 mm particle size permeability is greatly hampered. Turkey is the leading country in the world in hazelnut production. Therefore, considerable amounts of nut shell are obtained as a by-product. Incerase in the permeability of a finely crushed ore will obviously enable an increase in the leaching efficiency. The finer the particle size the more the liberation of gold is yet the permeability is lower. Therefore, this study focuses on the possibility of improving the permeability of ore heaps with nut shell addition. Optimum amount of nut shell which should be added to the ore was found to be 5% by volume. It was found that the permeability of ore crushed below 2.36 mm considerably increased by the addition of nut shell below 18 mm.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2018, 54, 2; 467-475
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of bacterial species in milk by MALDI-TOF and assessment of some oxidant-antioxidant parameters in blood and milk from cows with different health status of the udder
    Autorzy:
    Ozbey, G.
    Cambay, Z.
    Yilmaz, S.
    Aytekin, O.
    Zigo, F.
    Ozçelik, M.
    Otlu, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/16539172.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    dairy cows
    CMT
    mastitis
    malondialdehyde
    glutathione
    MALDI-TOF
    Opis:
    This study aimed to identify bacterial pathogens in milk samples from dairy cows with subclinical and clinical mastitis as well as to assess the concentrations of oxidant-antioxidant parameters [malondialdehyde (MDA), reduced glutathione (GSH), and total GSH levels] in both blood and milk samples. From a total of 200 dairy cows in 8 farms, 800 quarter milk samples obtained from each udder were tested in the laboratory for the presence of udder pathogens. Cultivated bacteria causing intramammary infection from milk samples were identified by Matrix-Assisted Laser Desorption/Ionization-Time of Flight (MALDI-TOF). In addition, from tested animals 60 cows were selected includıng 20 healthy cows that were CMT negative, 20 cows with subclinical mastitis (SM), and 20 cows with clinical mastitis (CM) for detection of MDA, GSH, and total GSH levels in blood and milk samples. Three hundred and eighty (47.5%; 380/800), 300 (37.5%; 300/800), and 120 (15%; 120/800) of milk samples, respectively were CMT positive or SM and CM, and those positives were cows from different farms. We observed that 87.4% (332/380), 25.3% (76/300), and 34.2% (41/120) of cows with CMT positive, CMT negative, and CM had bacterial growth. The most predominantly identified bacteria were Staphylococcus chromogenes (18.7%) obtained mainly from SM and Staphylococcus aureus (16.7%) as the most frequent cause of CM. According to our results, dairy cows with CM had the highest MDA levels, the lowest GSH, and total GSH levels in both blood and milk samples however, high MDA levels and low GSH levels in milk samples with SM were observed. Based on our results, lipid oxidant MDA and antioxidant GSH could be excellent biomarkers of cow’s milk for developing inflammation of the mammary gland. In addition, there was no link between nutrition and MDA and GSH levels.
    Źródło:
    Polish Journal of Veterinary Sciences; 2022, 25, 2; 269-277
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Histopathological, immunohistochemical and biochemical evaluation of electroacupuncture treatment of nervus radialis and nervus ulnaris injuries in rabbits
    Autorzy:
    Polat, E.
    Gunay, C.
    Eroksuz, H.
    Yilmaz, S.
    Kaya, E.
    Karabulut, B.
    Akdeniz Incili, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/16624049.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    histopathological
    immunohistochemical
    nerve injury
    oxidative stress
    electroacupuncture
    Opis:
    The aim of this study was to evaluate the efficacy of electroacupuncture in acute and chronic phases of radial and ulnar nerve injuries in histopathological, immunohistochemical and biochemical aspects. In the study, the rabbits were divided into four groups namely acute nerve injury (ANI) group, chronic nerve injury (CNI) group, positive control (PC) group and negative control (NC) group. In the ANI, CNI and PC groups, damage was created on the nervus radialis and nervus ulnaris by applying pressure for 60 seconds using a hemostatic forceps under anesthesia. No damage was created in the NC group. Fifteen sessions of electroacupuncture were applied to the rabbits in the ANI, CNI, and NC groups every other day using LI-4 (Large Intestine Meridian-4, He Gu), LI-10 (Large Intestine Meridian-10, Shou San Li), LR-3 (Liver Meridian-3, Tai Chong), and ST-36 (Stomach Meridian-36, Zusanli) electroacupuncture points. Electroacupuncture was not applied to the rabbits in the PC group. Decapitation was performed under general anesthesia at the end of electroacupuncture applications. After the euthanasia procedure, the samples obtained were evaluated for histopathological, immunohistochemical and biochemical parameters. In conclusion, degenerative foci in the treatment groups were found to be fewer than in the PC group whereas NGF and S-100 immunoreactivity were higher in the treatment groups than in the PC group. Whereas no statistically significant difference was observed between the treatment groups and the NC group in terms of oxidative stress factors, there was a statistically significant difference between the treatment groups and the PC group. In light of all these data, we have concluded that electroacupuncture is an effective treatment method for peripheral nerve injuries.
    Źródło:
    Polish Journal of Veterinary Sciences; 2022, 25, 4; 511-524
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of hip dysplasia on some biochemical parameters, oxidative stress factors and hematocrit levels in dogs
    Autorzy:
    Polat, E.
    Han, M.C.
    Kaya, E.
    Yilmaz, S.
    Kayapinar, S.D.
    Coskun, S.
    Yildirim, A.
    Can, U.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087150.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    alkaline phosphatase
    hematocrit
    hip dysplasia
    creatine kinase
    oxidative stress
    Źródło:
    Polish Journal of Veterinary Sciences; 2021, 24, 4; 473-478
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The design of remote controlled bomb destruction robot implemented using mechatronics design method
    Autorzy:
    Ersoy, S.
    Yilmaz, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/386255.pdf
    Data publikacji:
    2008
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    robot zdalnie sterowany
    mechatroniczne metody projektowe
    mechatronics design method
    remote controlled robot
    Opis:
    At the present day, the duration of product life is much shortened as a result of the customer demands changing rapidly and intensive competition. The customary design and production technologies have remained incapable against such hard conditions and consequently new concepts and methods have arisen. One of those concepts is “Mechatronics Engineering”. The mechatronics design method is based on an integrated approach to form the design eventuating in mainly match-purpose products instead of sequential design. The basic combination of the mechatronics approach is based on the usage of system model and simulation through prototype stages. The first step in development of the mechatronics systems is analyzing customer demands and the technical frame in which the system is combined. Generally the Mechatronics Design Process is rounded up the under seven mean headings. At the present day, remote controlled robotic systems are required for various purposes such as research, education, commerce etc. The target in this study is to design a remote controllable robot equipped with control capability with a robotic arm, to be developed following the Mechatronics Design Processes and used for the purpose of bomb defusing.
    Źródło:
    Acta Mechanica et Automatica; 2008, 2, 4; 11-15
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Trends in the Comparative Advantage and Competitiveness of the Turkish Textile and Clothing Industry in the Enlarged EU Market
    Określenie trendów w przewadze komparatywnej i konkurencyjności tureckiego przemysłu tekstylnego i odzieżowego w warunkach powiększonego rynku Unii Europejskiej
    Autorzy:
    Karaalp, H. S.
    Yilmaz, N. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/233924.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    turecki przemysł tekstylny i odzieżowy
    rynku UE
    przewaga komparatywna
    konkurencyjność
    handel międzynarodowy
    Turkish textile and clothing industry
    EU market
    comparative advantage
    competitiveness
    international trade
    Opis:
    In this paper, Turkey's comparative advantage and competitiveness in the textile and clothing industries are analysed by using Balassa's revealed comparative advantage index and Vollrath's indices of competitive advantage for the period of 1988-2008 in the enlarged EU market. The results revealed that Turkey has overall a strong comparative advantage and competitiveness in textile and clothing in the EU market. All competitiveness indices for the years 2005-2008 showed an increasing trend for the textile industry and a decreasing trend for clothing. The decrease in the competitiveness of clothing was observed more intensively in the enlarged EU market compared to that of the EU12. These findings can be thus interpreted: the Turkish textile industry responded well to the elimination of quotas, while the clothing sector has been more vulnerable to the inclusion of low-cost labour countries in the market since 2005.
    Artykuł przedstawia analizę przewagi komparatywnej i konkurencyjności tureckiego przemysłu tekstylnego i odzieżowego przeprowadzoną w oparciu o indeksy Balassy i Vollrath'a za okres 1988 - 2008. Wykazano, że pozycja Turcji była zdecydowanie korzystna. W okresie 2005 - 2008 stwierdzono wzrost współczynników dla przemysłu tekstylnego, natomiast spadek dla przemysłu odzieżowego. Spadek konkurencyjności był intensywniejszy dla powiększonego rynku EU w porównaniu do EU 12. Pozycja tureckiego przemysłu tekstylnego była bardziej stabilna, podczas gdy przemysł odzieżowy okazał się bardziej podatny na przyłączenie nowych członków UE.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2012, 3 (92); 8-12
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Advantage of Textiles and Clothing: Evidence for Bangladesh, China, Germany and Turkey
    Przewaga komparatywna przemysłu tekstylno-odzieżowego: wyniki dla Bangladeszu, Chin, Niemiec i Turcji
    Autorzy:
    Karaalp, H. S.
    Yilmaz, N. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/231971.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    revealed comparative advantage
    textiles
    clothing
    Bangladesh
    China
    Germany
    Turkey
    przewaga komparatywna
    tekstylno-odzieżowy rynek
    tkaniny
    odzież
    Bangladesz
    Chiny
    Niemcy
    Turcja
    Opis:
    In this study, the comparative advantage of four countries in the world: Bangladesh, China, Germany and Turkey is analysed with respect to the US and the EU-15 textiles and cloth-ing markets by employing Balassa’s revealed comparative advantage (RCA) index for the period 2000-2010. This country selection was made because all these countries rank in the top ten textile and clothing exporters in the world and they represent economies from four different income levels. The results have revealed that Bangladesh, China and Turkey have a strong comparative advantage in both the textile and clothing markets of the world, the US and the EU-15, while Germany has no significant comparative advantage in any of these markets. The findings show that the Bangladesh clothing industry has a substantially higher comparative advantage in all three markets compared to the other countries. It has also been found that Turkish textiles show the strongest comparative advantage in all three markets, whereas the comparative advantage of Chinese textiles indicates a slightly increasing trend in all aforementioned markets.
    W pracy przeanalizowano przewagę komparatywną czterech krajów na tekstylno-odzieżowych rynkach światowych, Stanów Zjednoczonych oraz EU-15, stosując wskaźnik przewagi komparatywnej typu Balassy (RCA) dla okresu 2000–2010. Wybrane kraje znajdują się w rankingu dziesięciu największych eksporterów wyrobów włókienniczych i odzieżowych na świecie i równocześnie reprezentują kraje o czterech różnych poziomach dochodu. Wykazano, że Bangladesz, Chiny i Turcja maja silną przewagę komparatywną na tekstylnych i odzieżowych rynkach światowych, Stanów Zjednoczonych i EU-15, Niemcy natomiast nie wykazują znaczącej przewagi komparatywnej na żadnym z wymienionych rynków. Wykazano również, że przemysł odzieżowy Bangladeszu ma znacznie wyższą przewagę komparatywną na wszystkich trzech rynkach w porównaniu z pozostałymi krajami. Przemysł tekstylny Turcji również wykazuje najsilniejszą przewagę komparatywną na wszystkich trzech rynkach, podczas gdy przewaga komparatywna przemysły tekstylnego Chin wykazuje nieznaczną tendencję wzrostową.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2013, 1 (97); 14-17
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of the Effects of Different Cotton Fibre Wastes on Different Yarn Types
    Wpływ rodzaju odpadów włókien bawełnianych na różne typy przędzy
    Autorzy:
    Yilmaz, D.
    Yelkovan, S.
    Tirak, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/233848.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    waste fibres
    reused fibres
    recycling
    fibre blending
    fibre cost
    włókno bawełniane
    odpady
    recykling
    mieszanki włókien
    Opis:
    In order to make a contribution to the reduction of raw material costs, in the present study the effect of reused cotton fibres on the quality of conventional ring and OE-rotor yarns was investigated. In the yarn production, three different waste fibres were taken from a cotton yarn production line and blended with primary cotton fibres at five different levels varying from 5% to 40%. In literature, studies have concentrated on the usage of recovered waste fibre in OE-rotor yarn production. However, to date there has been limited extensive andcomparative research on the effect of recovered fibre quality on different yarn properties to determine the possibility of high-quality yarn production from reused fibres. In the study, we focused on the effect of different waste types as well as the amount of waste in the blends on the properties of different yarn types.
    W celu obniżenia kosztów produkcji przeprowadzono badania dotyczące ponownego wykorzystania włókien bawełnianych na jakość konwencjonalnych przędz obrączkowych. Do produkcji przędzy użyto trzech rodzajów włókien odpadowych i wymieszano je z wcześniej nieużywanymi włóknami bawełnianymi w ilości od 5 do 40%. W literaturze można znaleźć wiele publikacji koncentrujących się głównie na wykorzystaniu odzyskanego włókna odpadowego w produkcji przędz, jednakże przeprowadzono dotychczas niewiele badań porównawczych dotyczących wpływu jakości odzyskanych włókien na różne właściwości wytworzonych z nich przędz. W pracy skoncentrowano się na wpływie różnych typów odpadów, jak również ilości odpadów w mieszankach na właściwości różnych typów przędzy.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2017, 4 (124); 19-30
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Advantage of Textiles and Clothing: Evidence for Top Exporters in Eastern Europe
    Przewaga konkurencyjna w dziedzinie włókiennictwa i odzieżownictwa: Pozycja czołowych eksporterów wschodnioeuropejskich
    Autorzy:
    Yilmaz, N. D.
    Karaalp-Orhan, H. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/231953.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    RCA
    IIT
    textiles
    clothing
    Czech Republic
    Hungary
    Polska
    Romania
    Turkey
    tekstylia
    odzież
    Czechy
    Węgry
    Polska
    Rumunia
    Turcja
    Opis:
    The comparative advantage and intra-industry trade of five countries: Czech Republic, Hungary, Poland, Romania and Turkey, are analyzed in the global textile and clothing markets by employing Balassa’s revealed comparative advantage (RCA) index and intraindustry trade (IIT) index for the period 2002-2013. The results have revealed that while Turkey is the only one among the countries selected to have comparative advantage in the global textile market, Romania joins Turkey in this in the world’s clothing market. The comparative advantage of these two countries in the global clothing market presents a stronger declining trend compared to that in textiles, which is probably due to the entrance of cheap-labour eastern Asian countries into the global clothing market, as this market is more labor-intensive compared to textiles. Moreover, while a high intra-industry trade index is found in Czech Republic, Hungary and Poland, an inter-industry trade structure is observed in Romania for textiles and clothing. Turkey presents intra-industry specialisation in textiles, while possessing inter-industry trade structure in terms of clothing.
    Analizowano przewagę konkurencyjną i handel wewnątrzgałęziowy pięciu krajów: Czech, Węgier, Polski, Rumunii i Turcji biorąc pod uwagę globalny rynek włókiennictwa i odzieżownictwa przy wykorzystaniu indeksu Balassy i indeksu handlu wewnątrzgałęziowego. Brano pod uwagę okres lat: 2002 - 2013. Wyniki wykazały, że podczas gdy Turcja jest jedynym spośród wybranych krajów, który ma przewagę konkurencyjną na globalnym rynku tekstyliów to na globalnym rynku odzieżownictwa pozycję taką posiada Turcja i Rumunia. Przewaga konkurencyjna tych dwóch krajów na globalnym rynku odzieżownictwa przedstawia silniejszy trend zniżkowy porównując do trendów w dziedzinie tekstyliów. Dzieje się tak prawdopodobnie w wyniku wejścia na rynek globalny tekstyliów wschodnioazjatyckich krajów o niskich płacach ponieważ produkcja odzieży wymaga większego nakładu pracy niż produkcja tekstyliów. Podczas gdy wysoki indeks handlu wewnątrzgałęziowego cechują Czechy, Węgry i Polska, Turcja przedstawia wewnątrzgałęziową specjalizację w dziedzinie włókiennictwa oraz międzygałęziową strukturę handlu w odzieżownictwie.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2015, 6 (114); 8-13
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Artificial Neural Networks for Defect Detection in Ceramic Materials
    Autorzy:
    Akinci, T. C.
    Nogay, H. S.
    Yilmaz, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/176701.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    impulse noise
    artificial neural network
    ANN
    defect detection
    ceramic materials
    Opis:
    In this study, an artificial neural network application was performed to tell if 18 plates of the same material in different shapes and sizes were cracked or not. The cracks in the cracked plates were of different depth and sizes and were non-identical deformations. This ANN model was developed to detect whether the plates under test are cracked or not, when four plates have been selected randomly from among a total of 18 ones. The ANN model used in the study is a model uniquely tailored for this study, but it can be applied to all systems by changing the weight values and without changing the architecture of the model. The developed model was tested using experimental data conducted with 18 plates and the results obtained mainly correspond to this particular case. But the algorithm can be easily generalized for an arbitrary number of items.
    Źródło:
    Archives of Acoustics; 2012, 37, 3; 279-286
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of plant growth promoting Rhizobacteria agains salt stress for tomato (Solanumlycopersicum L.) seedling growth
    Autorzy:
    Yilmaz, Y.
    Erdinc, C.
    Akkopru, A.
    Kipcak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/12987894.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 6; 15-29
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytochemical profiles of wild grown blackberry and mulberry in Turkey
    Fitochemiczny profil dzikiej czarnej jagody i morwy w Turcji
    Autorzy:
    Akin, M.
    Eyduran, S.P.
    Ercisli, S.
    Yilmaz, I.
    Cakir, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/11543357.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Opis:
    Blackberry and mulberry are main berry crops grown in Black Sea region mostly in humid shade forest areas and its important for local people’s diet and also important for the maintenance of their health and prevention of disease. Present study aimed to determine the content of vitamin C, organic acids (citric acid, tartaric acid, oxalic acid, malic acid, succinic acid, fumaric acid), sugars (glucose and fructose) and phenolic compounds (catechin, rutin, quercetin, chlorogenic acid, ferulic acid, o-coumaric acid, p-coumaric acid, caffeic acid, syringic acid, vanillic acid, and gallic acid), as well as antioxidant capacity (Trolox Equivalent Antioxi-dant Capacity, TEAC assay) in the wild grown blackberry and mulberry fruit. Among phenolic acids, chlorogenic acid was the predominant for all wild grown blackberries, white and black mulberries. The presence of oxalic acid was only detected in the wild blackberry genotype. As a result, the phytochemical recognition of the wild grown blackberry, black and white mulberries might contribute to forthcoming investigations for developing the efficiency of food industry.
    Czarna jagoda i morwa należą do głównych owoców jagodowych uprawia-nych w rejonie Morza Czarnego w wilgotnych cienistych obszarach. Są one też ważne w diecie lokalnych mieszkańców, dla utrzymania zdrowia oraz zapobiegania chorobom. Celem niniejszego badania jest określenie zawartości witaminy C, kwasów organicznych (cytrynowego, winowego, szczawiowego, jabłkowego, bursztynowego, fumarowego), cukrów (glukozy i fruktozy), związków fenolowych (katechiny, rutyny, kwercetyny, kwasów: chlorogenowego, ferulowego, o-kumarowego, p-kumarowego, kawowego, syryngowego, wanilinowego i galusowego), a także pojemności antyoksydacyjnej (pojemnośćprzeciwutleniająca wyrażona w równoważnikach, test TEAC) w owocach dziko rosnącej czarnej jagody i morwy. Dominującym kwasem wśród kwasów fenolowych dla wszystkich uprawianych czarnych jagód oraz białej i czarnej morwy był kwas chlorogenowy. Obecność kwasu szczawiowego była wykryta tylko w genotypie dzikiej czarnej jagody. Fitochemiczna analiza dziko rosnącej czarnej jagody oraz czarnej i białej morwy może zatem przyczynić się do kolejnych badań zmierzających do zwiększenia wydajności przemysłu spożywczego.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2016, 15, 1; 3-12
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Glocal leadership behaviors of managers working in private institutions
    Glokalne zachowania menadżerów pracujacych w prywatnych instytucjach
    Autorzy:
    Ercetin, S. S.
    Potas, N.
    Acikalin, S. N.
    Yilmaz, M.
    Kisa, N.
    Gungor, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/404684.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    global
    local
    glocal
    glocal leadership
    globalne
    lokalne
    glokalne
    glokalne przywództwo
    Opis:
    Glocalization is a holistic approach that balances global and local dimensions. As it affects organizations, glocal leadership has started to be discussed. The aim of this study is to reveal the perceptions of managers of private institutions about fulfilling glocal leadership behaviors, and investigate if there is a meaningful difference in terms of gender, age, seniority, and education level variables. This study is designed to be descriptive research using the Multidimensional Glocal Leadership Scale developed by Ercetin et. al (2011) to collect the data. The population of the research is a self-existing sample of 378 managers who work in private institutions. According to the findings, managers perceive they are fulfilling the glocal leadership behavior and its dimensions at middle level. There are some differences found for gender, age, seniority and education level variables.
    Glokalizacja jest holistycznym podejściem, które równoważy wymiary globalne i lokalne. Ponieważ dotyka organizacji, zaczęto dyskutować o glokalnym przywództwie. Celem tego badania jest ujawnienie poglądów menedżerów prywatnych instytucji na temat glokalnych zachowań przywódczych i zbadanie, czy istnieje istotna różnica pod względem płci, wieku, stażu pracy i poziomu wykształcenia. Badanie to ma charakter opisowy i wykorzystuje Wielowymiarową Skalę Przywództwa Glokalnego opracowaną przez Ercetina (2011). Populacja badania jest samodzielną próbą 378 menedżerów pracujących w instytucjach prywatnych. Zgodnie z ustaleniami, menedżerowie dostrzegają, że realizują glokalne zachowanie przywódcze i jego wymiary na poziomie średnim. Istnieją pewne różnice dotyczące zmiennych pod względem płci, wieku, stażu pracy i poziomu wykształcenia.
    Źródło:
    Polish Journal of Management Studies; 2017, 16, 2; 74-87
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Boride Layer Growth Kinetics of AISI H13 Steel Borided with Nano-Sized Powders
    Autorzy:
    Karakaş, M. S.
    Günen, A.
    Kanca, E.
    Yilmaz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/351842.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    boriding
    growth kinetics
    activation energy
    Opis:
    Growth kinetics of boride layers in AISI H13 steel was investigated using the pack boriding method at temperatures of 1073, 1173 and 1273 K (800°C, 900°C and 1000°C) for periods of 2, 4 and 6 h with nano-sized boron (NB) and micron-sized Ekabor II powders as boriding agents. The total thickness of the boride layer (including both FeB and Fe2B) after boriding at 1273 K (1000°C) for 6 h was 103.8 μm and 96.5 μm for the NB and Ekabor II specimens, respectively. X-ray diffraction analysis of the boride layers on the surfaces borided with NB and Ekabor II revealed the presence of FeB and Fe2B phases with sawtooth morphology. The FeB/Fe2B volume ratio was higher in the specimens borided with NB. The thickness of the boride layer (FeB + Fe2B) increased with the increasing boriding temperature and time. The FeB layer in the NB specimen displayed a (002) preferred orientation.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 159-165
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Selected Properties of Eco-Friendly Soybean and Other Fibres
    Porównanie wybranych właściwości ekologicznych włókien sojowych
    Autorzy:
    Yilmaz, D
    Karaboyaci, M
    Kiliç, H
    Kitapçi, K
    Yelkovan, S
    Powiązania:
    https://bibliotekanauki.pl/articles/232900.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    soybean fibre
    regenerated fibre
    dyeing properties
    biodegradable fibre
    sustainable products
    functional properties
    flame resistance
    błonnik sojowy
    regenerowane włókno
    właściwości barwienia
    biodegradowalne włókna
    zrównoważone produkty
    właściwości funkcjonalne
    ognioodporność
    Opis:
    Biodegradable and sustainable products are being employed to make contributions to efforts concerning environmental protection and the reduction of oil consumption. Biodegradable fibres present a simple and notable opportunity for providing sustainable textiles. Soybean fibre is a kind of regenerated and new-generation protein plant fibre. The present work aimed to analyse the many different properties of soybean fibres. Particularly it was focused on their performance, functional, comfort and dyeing properties. In literature, there are studies regarding soybean fibres but topics mostly involved the analysis of comfort properties of the fibre. In this study, fibre structure and composition, flame and UV resistance, strength, pilling behaviour, air and water vapour permeability, water absorption, drape and dyeing properties were studied. It was indicated that soybean fibre is capable of meeting the performance, comfort and functional requirements of classical and technical textile products. The fibre has many of the good qualities of natural fibres such as tenacity, moisture regain, soft-lustrous handle, dyeability and colour fastness properties, and also has some of the functional properties of synthetic fibres such as being flame retardant and anti-ultraviolet.
    Produkty biodegradowalne i odnawialne są coraz powszechniej stosowane dla ochrony środowiska naturalnego i redukcji zużycia paliw. Takim problemem są włókna naturalne w tym sojowe, będące przykładem nowej generacji włókien proteinowych. W pracy przedstawiono analizę rożnych właściwości, w szczególności ich zastosowania, funkcjonalności komfortu użytkowania i wybarwialności. W literaturze znajduje się wiele publikacji związanych z komfortem produktów z włókien sojowych, natomiast w przedstawionych badaniach zwrócono uwagę na ich strukturę i skład a, także ich palność, odporność na promieniowanie UV, wytrzymałość, piling, przepuszczalność powietrza i pary wodnej, absorpcje wody, układalność i wybarwialność. Stwierdzono, że włókna sojowe mają wiele ważnych pozytywnych właściwości charakterystycznych dla innych włókien naturalnych.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2015, 3 (111); 14-24
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of heavy metals and antibiotics on siderophores producing bacterial isolates
    Autorzy:
    Erdem, B.
    Dayangaç, A.
    Günaydin, M.
    Tulumoğlu, Ş.
    Yilmaz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068246.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.85.J-
    92.20.jb
    95.75.Fg
    Opis:
    In this study, siderophore-producing bacterial species have been isolated from soils contaminated with diesel oil. In P. aeruginosa (P-7) production of siderophores was inhibited at concentrations of ZnSO₄ and CoCl₂ of 2000 μM, while B. subtilis (BS-1) has increased siderophores production at similar concentrations of CoCl₂ and ZnSO₄. The same bacteria have increased the production of siderophores in presence of streptomycine (512 mg/ml). In B. subtilis the production of siderophores was inhibited by cefuroxime. The results show the effect of metals on the efficiency of siderophore production by bacteria for potential application in bioremediation of metal-contaminated iron-deficient soils in the microbial assisted phytoremediation processes. The results include the effect of metals on siderophore production efficiency of the bacteria used for the bioremediation of metal-contaminated soils. In conclusion, it has been found that heavy metals and antibiotics significantly effect the production of siderophores by bacteria.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 181-183
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gas Sensing Properties of Carbon Nanotubes Modified with Calixarene Molecules Measured by QCM Techniques
    Autorzy:
    Mermer, Ö.
    Okur, S.
    Sümer, F.
    Özbek, C.
    Sayın, S.
    Yılmaz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1491414.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.je
    65.40.gp
    65.40.gk
    65.40.gd
    64.70.fm
    64.10.+h
    51.10.+y
    Opis:
    This study focuses on the characterization and optimization of calixarene modified carbon nanotube thin films for gas detection. Calixarene molecules were synthesized individually by considering their functional groups to attract the gas. Calixarene modified carbon nanotube based sensors were fabricated using drop-casting method on a quartz crystal microbalance gold electrode. Carbon monoxide, carbondioxide, oxygen and dry air were used as active gases for adsorption process, while high-purity nitrogen gas was used for desorption process. The selectivity and sensitivity of calixarene modified carbon nanotube are investigated in detail. Our experimental results show that functional calixarene modified carbon nanotube coated quartz crystal microbalance sensors are very sensitive and selective to gas of $CO_2$ at room temperature operation.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1; 240-242
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical Characterization of Interdigitated Humidity Sensors Based on CNT Modified Calixarene Molecules
    Autorzy:
    Özbek, C.
    Culcular, E.
    Okur, S.
    Yılmaz, M.
    Kurt, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400035.pdf
    Data publikacji:
    2013-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.je
    65.40.gp
    65.40.gk
    65.40.gd
    64.70.fm
    64.10.+h
    51.10.+y
    Opis:
    In this study, we report on the optimization and characterization of chloroform soluble calix[4]arene derivative as a humidity sensor based on electrical properties. Due to the fact that calix[4]arene molecules are nonconductive, we modified the calix[4]arene molecules with carbon nanotubes with electrostatic bond in order to increase the conductance of calix[4]arene molecule (5,11,17,23-tetra-ter-butyl-25,27-dehydrazinamidcarbonilmetoxy-26,28-dehydroxy-kalix[4]aren). Using photolithography technique, we fabricated interdigitated gold electrodes with 3 micrometers separation to investigate the electrical properties of carbon nanotubes modified calix[4]arene molecule where we used dropcast method to form a thin film of carbon nanotubes modified calix[4]arene molecule on the gold electrodes. Our reproducible experimental results indicated that the chloroform soluble carbon nanotubes modified calix[4]arene films have great potential for humidity sensing applications at room temperature operations.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 2; 461-463
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlation of Hardness and Silicon Morphology for Al-Si-Sb Alloy
    Autorzy:
    Uzun, O.
    Yilmaz, F.
    Emeksiz, C.
    Ergen, S.
    Kolemen, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/356738.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al-Si alloy
    casting
    Vickers
    finite element analysis
    Opis:
    In this study, we have focused on the role of silicon morphology on the hardness of eutectic Al–12 wt.% Si–0.5 wt.% Sb alloy solidified at different cooling rates. The alloys were produced by using induction melting, arc-remelting and melt-spinning techniques. The cooling rates of the alloys were determined as 0.5, 60 and ~105°C.s-1 for induction-melted, arc-remelted and meltspun alloy. The experimental results show that as the cooling rate increased the coarse silicon phase was substantially refined and its morphology altered from sharp need-like to round shape. Two exothermic peaks, attributed to precipitation and coarsening of silicon from supersaturated α-Al, were observed in the DSC curve of MS alloy. Vicker’s hardness of melt-spun alloy was found two times higher than those of IMed and ARed alloys. The lowest hardness of induction-melted alloy was ascribed to the lamellar morphology of silicon, yielding decohesive rupture. This result was confirmed by finite element analyzing.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 467-472
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment on Gamma Attenuation Behavior of W-VC-C and W-VC-TiC-C Composites for Co-60 Radioisotope
    Autorzy:
    Demir, E.
    Tugrul, A.
    Sonmez, S.
    Ovecoglu, L.
    Buyuk, B.
    Yilmaz, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031587.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    attenuation coefficient
    Co-60
    radiation shielding material
    transmission technique
    W-VC-C-TiC composite
    Opis:
    In this study, tungsten-vanadium carbide-graphite (W-VC-C) and tungsten-vanadium carbide-titanium carbide-graphite composite (W-VC-TiC-C) materials were investigated against Co-60 gamma radioisotope. The composite materials which are used in advanced technological studies and high temperature applications in many various fields especially in the areas of fission and fusion armor materials were produced by mechanical alloying method as in two groups. One of them include 93% tungsten (W), 6% vanadium carbide (VC) and 1% graphite (C) also which has three different alloying times (6-12-24 h). Other group of the samples was composed of 91% tungsten, 6% vanadium carbide (VC), 2% titanium carbide (TiC) and 1% graphite (C) also which has three different alloying times (6-12-24 h) and sintered at 1750°C. Co-60 gamma radioisotope source and gamma transmission technique were used in the experiments to investigate the properties of the composite materials. The mass attenuation coefficients of the samples were determined by using experimental results and theoretical mass attenuation coefficients were calculated from XCOM computer code. It can be concluded that increasing the tungsten ratio causes higher mass attenuation coefficient and the composite materials have provided us benefits better than lead for radiation gamma shielding.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 830-832
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Investigation on the Mass Attenuation Coefficients of W-VC-C and W-VC-TiC-C Composites for Gamma Radioisotopes
    Autorzy:
    Tuğrul, A.
    Demir, E.
    Yılmaz, O.
    Sönmez, S.
    Öveçoğlu, M.
    Büyük, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1187451.pdf
    Data publikacji:
    2016-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    25.20.Dc
    81.05.Mh
    Opis:
    In this study, tungsten-vanadium carbide-graphite and tungsten-vanadium carbide-titanium carbide-graphite composites (W-VC-TiC-C) which can be used in high-tech equipment were investigated against different gamma radioisotopes. The composite materials were produced via mechanical alloying method in two groups; one of them includes 93% tungsten (W), 6% vanadium carbide (VC) and 1% graphite (C) which was synthesized during three different alloying times (6, 12, 24 hours). Other group of the samples were composited as 91% tungsten, 6% vanadium carbide (VC), 2% titanium carbide (TiC) and 1% graphite (C) which has also three different alloying times (6, 12, 24 hours). Gamma transmission technique was used in the experiments to investigate the gamma attenuation properties of the composite materials. Linear and mass attenuation coefficients of the samples were determined in the experiments and theoretical mass attenuation coefficients were calculated using widely acknowledged XCOM computer code. The experimental mass attenuation coefficients and calculated theoretical results were compared and evaluated with each other. Results showed that gamma attenuation coefficients of the composite materials dependent on alloying time. It can be concluded that increasing the tungsten ratio causes higher linear attenuation coefficient which decreases with increasing gamma energies.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 4; 724-727
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    $K_{β}//K_{α}$ X-Ray Intensity Ratios for Co, Ni, Cu, and~Zn in Phthalocyanines Complexes
    Autorzy:
    Baltas, H.
    Ertugral, B.
    Kantar, C.
    Sasmaz, S.
    Yılmaz, E.
    Cevik, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/1504553.pdf
    Data publikacji:
    2011-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.30.Rj
    32.80.-t
    31.70.-f
    Opis:
    The $K_{β} // K_{α}$ X-ray intensity ratios of Co, Ni, Cu and Zn in metalophthalocyanines complexes have been studied. Co, Ni, Cu and Zn elements have been excited by using 59.5 keV photons emitted by 50 mCi $\text{}^{241}Am$ radioactive source. K X-rays emitted by samples have been counted by a Si(Li) detector with resolution 0.16 keV at 5.9 keV. We have found that $K_{β} // K_{α}$ X-ray intensity ratios of Co, Ni, Zn, and Cu complexes have changed depending on chemical structures of Co, Ni, Zn and Cu. The measured values have been compared with the theoretical predictions and experimental values of pure elements.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 6; 764-768
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Cu and Ni Nano-Fluids Synthesized by Pulsed Wire Evaporation Method
    Autorzy:
    Kim, H.-S.
    Yilmaz, F.
    Dharmaiah, P.
    Lee, D.-J
    Lee, T.-H.
    Hong, S.-J.
    Powiązania:
    https://bibliotekanauki.pl/articles/356475.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pulsed wire evaporation
    nanofluid
    Cu
    Ni
    suspension stability
    dispersibility
    Opis:
    In the present work, Cu and Ni nanofluids were synthesized using the pulsed wire evaporation (PWE) method in the different aqueous medias, namely (ethanol and ethylene glycol), and the effects of the aqueous media on the dispersion state, stability, and particle size of nanoparticles were studied. The size and morphology of synthesized nano-particles were investigated by transmission electron microscopy (TEM). Also, the dispersion stability of the nanofluids was evaluated by turbiscan analysis. The TEM results showed that the nano-particles were spherical in shape, and the average particle size was below 100 nm. The average particle size of the Cu nano-particles was smaller than that of Ni, which was attributed to a difference in the specific sublimation energy of the elements. Moreover, ethylene glycol (EG) exhibited higher suspension stability than ethanol. Finally, the dispersion stability of Cu@EG displayed the highest value due to lower particle size and greater viscosity.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 999-1004
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Upper Campanian calciclastic turbidite sequences from the Hacımehmet area (eastern Pontides, NE Turkey): integrated biostratigraphy and microfacies analysis
    Autorzy:
    Sari, B.
    Kandemır, R.
    Özer, S.
    Walaszczyk, I.
    Görmüş, M.
    Demırcan, H.
    Yilmaz, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/138655.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Late Campanian
    Calciclastic Turbidite
    biostratigraphy
    Eastern Pontides
    kampan
    biostratygrafia
    Turcja
    Opis:
    The upper Campanian (Cretaceous) of the Hacımehmet area (south of the city of Trabzon; Eastern Pontides) is mainly composed of calciclastic turbidites. The basinal unit of the 119 m thick succession includes thin red pelagic limestone interlayers and conglomerates dominated by volcanic clasts. The overlying upper slope and lower slope units of the sequence consist of an alternation of allochthonous calcarenite/calcirudite beds and pelagic marls and mudstones. Calcarenite/calcirudite beds dominate the upper slope unit of the succession and are composed of transported material, including benthic foraminifers, red algae, bryozoan, crinoid and rudist fragments, inoceramid bivalve prisms and neritic and pelagic carbonate lithoclasts. The occurrence of Helicorbitoides boluensis (Sirel) extracted from the calcarenite/calcirudite beds indicates a Campanian age. Identifiable rudists such as Joufia reticulata Boehm, Bournonia cf. anatolica Özer, Biradiolites cf. bulgaricus Pamouktchiev and ?Biradiolites sp. from the upper slope unit of the succession indicate a late Campanian–Maastrichtian age. The planktonic foraminifers within the red pelagic limestone beds, marls and mudstones throughout the succession consist mainly of Campanian–Maastrichtian forms and suggest mainly basinal depositional conditions. The presence of Radotruncana cf. calcarata (Cushman) accompanied by Globotruncanita elevata (Brotzen) in the basinal unit of the succession indicates an early late Campanian age for the lower part of the succession. Inoceramid bivalves have been collected from the upper part of the succession. The fauna is dominated by ‘Inoceramus’ tenuilineatus Hall and Meek, 1854 and Cataceramus haldemensis (Giers, 1964); other taxa recognised are: ‘Inoceramus’ algeriensis Heinz, 1932, Platyceramus vanuxemi (Meek and Hayden, 1860), ‘Inoceramus’ cf. nebrascensis Owen, 1852, Cataceramus aff. barabini (Morton, 1834), Cataceramus gandjaensis (Aliev, 1956), and ‘Inoceramus’ sp.; the assemblage indicates the ‘Inoceramus’ tenuilineatus Zone; corresponding to the middle–late Campanian boundary interval. The uppermost part of the succession is characterized by the presence of the trace fossils Scolicia strozzii and Scolicia isp., indicating a mixed Skolithos-Cruziana ichnofacies. This ichnofacies suggests a well-oxygenated environment.
    Źródło:
    Acta Geologica Polonica; 2014, 64, 4; 393-418
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biofortification and the involved modern approaches
    Autorzy:
    Athar, T.
    Khan, M.K.
    Pandey, A.
    Yilmaz, F.G.
    Hamurcu, M.
    Hakki, E.E.
    Gezgin, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/15075.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Źródło:
    Journal of Elementology; 2020, 25, 2
    1644-2296
    Pojawia się w:
    Journal of Elementology
    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
    Tytuł:
    Urine iodine excretion in patients with papillary thyroid cancer evaluation of the relationship with the presence of BRAF mutation
    Autorzy:
    Celik, M.
    Guldiken, S.
    Ayturk, S.
    Yilmaz Bulbul, B.
    Kucukarda, A.
    Can, N.
    Tastekin, E.
    Sezer, A.
    Sut, N.
    Tugrul, A.
    Gurkan, H.
    Tozkir, H.
    Demirkan, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192247.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    papillary thyroid cancer
    BRAF mutation
    urine iodine excretion
    Opis:
    Iodine is an essential element for the production of thyroid hormones. In recent years, it has been suggested that excessive consumption of iodine may play a role in the pathogenesis of papillary thyroid cancer (PTC). In addition, studies have suggested that high iodine consumption is an important risk factor for the formation of a BRAF mutation in the thyroid gland. A prospectively designed study included 132 cases scheduled for thyroidectomy for various reasons. Urine iodine levels of all patients were examined before the operation. The iodine excretion levels of the patients were grouped according to the median urinary iodine concentration determined in community screenings (those with <100 µg L-1 low iodine excretion, those with 100-199 µg L-1 normal iodine excretion, those with 200-299 µg L-1 high iodine excretion). Patients were divided into 3 groups according to the post-operative pathology results. As a result of thyroid histopathology, benign (n: 44), PTC (n: 88) (BRAF (+): 44 and BRAF (-): 44) cases were included in the study. BRAF mutations in patients diagnosed with PTC were evaluated using the “Real Time PCR Melting Curve Analyzer” method. The relationship between urinary iodine excretion levels and clinical, histopathological and BRAF positivity was examined. In our study, no difference was found in urinary iodine excretion between patients with and without PTC. Hashimoto’s thyroiditis was observed more frequently in patients with PTC (p=0.023). In addition, Hashimoto’s thyroiditis was statistically more frequently detected in the BRAF (-) group compared to the BRAF (+) and control group (p=0.034). Despite studies suggesting that high iodine consumption is important in PTC pathogenesis, we did not find a relationship between the mutation and iodine consumption, which plays an important role in the development of PTC.
    Źródło:
    Journal of Elementology; 2020, 25, 3; 1019-1028
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-41 z 41

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