Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Gul, Muhammet(82)
- Akkurt, Nevzat(67)
- Güler, Ömer(66)
- Baskonus, Haci Mehmet(62)
- Bulut, Hasan(60)
- Tekin, H.O.(52)
- ALMisned, Ghada(49)
- Yucesan, Melih(43)
- Yildirim, Numan(42)
- Yildirim, Nuran Cikcikoglu(38)
- Paksoy, Mehmet Yavuz(36)
- Serdar, Osman(36)
- Zengin, Gokhan(36)
- Ince, Muharrem(34)
- Celik, Erkan(33)
- Benzer, Fulya(32)
- Kocabaş, Mehmet(30)
- Sulaiman, Tukur Abdulkadir(30)
- Tanyol, Mehtap(29)
- Yildirim, Ozal(28)
- Aslan, Naim(26)
- Kök, Mediha(26)
- Özkul, İskender(26)
- Ates, Mehmet(25)
- Danabas, Durali(25)
- Kutluyer, Filiz(25)
- Can, Erkan(24)
- Kutlu, Banu(23)
- Onat, Onur(23)
- Demir, Veysel(22)
- Erten, Fusun(22)
- Guler, Omer(22)
- Say, Yakup(22)
- Güler, Seval Hale(21)
- Yaman, Mehmet(21)
- Baykal, Duygu Sen(20)
- Sançar, Taylan(20)
- Susam, Selim Orhun(20)
- Cakilcioglu, Ugur(19)
- Orhan, Cemal(19)
Yayınlar
- MakaleAçık Erişim2011Scopus SJRQ2Synthesis and Characterization of Novel Mn(II), Co(III), Ni(II) and Cd(II) Complexes from 4-(2-nitrophenylazo)-1H-pyrazole-3,5-diamine
Esener, Hasan; Adiguzel, Ragip; Ergin, Zuhal; Aktan, Ebru; Turan, Nevin; Sekerci, Memet
In this study, the diazotized o-nitroaniline was coupled with malononitrile. The ring closure reaction of the obtained product with hydrazine monohydrate yielded 4-(2-nitrophenylazo)-1H-pyrazole-3,5-diamine (L). The structure of L has been elucidated by spectroscopic analyses. Then, novel Mn(II), Co(II), Ni(II) and Cd(II) complexes of L have been synthesized, and the structures of these complexes determined by elemental analysis, spectrometric and TGA/DTA methods, molar conductance and magnetic susceptibility measurements. All complexes were monomeric. Except Mn(II) complex, other complexes were diamagnetic. From the elemental analyses and mass spectra data, the complexes were proposed to the formulas [MnL2(CH3O)H2O]center dot Cl center dot CH3OH, [CoL2(CH3O)(2)]center dot Cl center dot 2.5CH(3)OH, [NiL2(CH3OH)(2)]center dot 6.5CH(3)OH and [Cd2L2(Cl)(2)(CH3O)(2)]center dot CH3OH center dot 1.5H(2)O. For Mn(II) and Co(III) complexes octahedral and for the Ni(II) complex square planar geometry were proposed, but the Cd(II) complex includes five coordinated structure. The Mn(II), Co(II) and Ni(II) complexes were found to be mononuclear and electrolytes. On the other hand Cd(II) complex was found to be dinuclear and non-electrolyte.
AtıfWoS12OpenAlex9
İncele - MakaleYalnız künye2011Scopus SJRQ3Effect of Pomegranate Seed Extract on Free Radical Damage and Antioxidant Activity Under Cisplatin-Induced Oxidative Stress Conditions in Rabbit Testes
Benzer, F.; Kandemir, F. M.; Yildirim, N. C.; Ozan, S. T.
The aim of this study is to evaluate the protective effect of pomegranate seed extract on cisplatin-induced oxidative stress in rabbits testes. Rabbits were divided into three groups; (i) being control group, (ii) cisplatin group and (iii) cisplatin + pomegranate seed extract group. The level of malondialdehyde and glutathione, the activity of catalase, glutathione peroxidase, were measured in testes tissue of rabbits. Malondialdehyde levels were increased depending on cisplatin. In the case of cisplatin + pomegranate seed extract, malondialdehyde levels were found to be lower than cisplatin group (p < 0.05). In cisplatin group, catalase, glutathione peroxidase activity and glutathione levels were decreased when compared to control but in cisplatin + pomegranate seed extract group, catalase, glutathione peroxidase activity and glutathione levels were found higher than cisplatin group (p < 0.05). The pomegranate seed extract supplementation may play a protective role or decrease the side effects of cisplatin-induced testes toxicity from cancer medicines.
AtıfWoS5İncele - MakaleYalnız künye2011Scopus SJRQ2Compensatory effects of curcumin on cisplatin-induced toxicity in rabbit testis
Kandemir, F. M.; Benzer, F.; Yildirim, N. C.; Ozdemir, N.
Curcumin, a widely used spice and colouring agent in food, has been shown to possess potent antioxidant, antitumor promoting and anti-inflammatory properties in vitro and in vivo. The present study was designed to investigate the protective effects of curcumin on changes in the levels of lipid peroxidation and endogenous antioxidants induced by cisplatin (cis-diamminedichloroplatinum II, CDDP) in the testiclular tissue of rabbits. 18 healthy male New Zealand white rabbits were equally divided into three groups of six rabbits each, control, cisplatin, and cisplatin+curcumin. The degree of protection produced by cisplatin was evaluated by determining the level of malondialdehyde (MDA) and glutathione (GSH), the activity of catalase (CAT), glutathione peroxidase (GSH-Px), were estimated from testes homogenates. MDA levels were increased with cisplatin compared to control but in cisplatin+curcumin group, MDA levels were found to be lower than cisplatin group (p<0.05). The activity of CAT and GSH-P-X was decreased in cisplatin and cisplatin+curcumin groups compared to control (p<0.05). In the case of cisplatin+curcumin CAT and GSH-Px activity were increased compared to cisplatin group (p<0.05). GSH levels were decreased with cisplatin but administration cisplatin+curcumin increased the levels of GSH comared to cisplatin group (p<0.05). In the present study, co-administration of curcumin with cisplatin prevented the damage to testes induced by this drug and may be considered as a potentially useful candidate in the combination chemotherapy with cisplatin.
AtıfWoS22İncele - MakaleYalnız künye2011Scopus SJRQ3MALONDIALDEHYDE LEVELS AND GLUTATHIONE PEROXIDASE ACTIVITIES IN THE TISSUES OF FRESHWATER CRAYFISH (ASTACUS LEPTODACTYLUS ESCH 1823) IN CULTURE CONDITION
Kandemir, F. M.; Benzer, F.; Erisir, M.; Yildirim, N. C.
The objective of the study was to characterize the effects of sex on lipid peroxidation (as malondialdehyde, MDA), antioxidant defence system (as glutathione peroxidase, GSH-Px) in the hepatopancreas, gonad and muscle tissues of freshwater crayfish, Astacus leptodactylus, in culture condition. The crayfish used in the present study was provided from Keban Dam Lake population of A. leptodactylus. 34 males and 30 females crayfish in different size were hold in stock ponds (6 x 6 x 0.5 m). This study was carried out between June 18, 2004 and December 1, 2004 at the crayfish reproduction unit of Aquaculture Faculty of Firat University, Elazig, Turkey. Plastic pipes (20 cm in length and 7 cm in diameter) were provided as shelters for the crayfish. Crayfish were fed 2 % of their total wet weight daily with prepared ration. Crayfish were exposed to natural photoperiod. During the study, the mean water temperature, dissolved oxygen and mean pH were 4 degrees C, 6.28 +/- 0.32 mg L-1 and 7.82 +/- 0.17, respectively. MDA and GSH-Px levels according to sex and tissue-species were determined. MDA level in the hepatopancreas and gonad of females were higher than males, except muscle tissue (P<0.001). However, the GSH-Px activities in the hepatopancreas and gonad of males were higher than females, except muscle tissue (P<0.001). As a result, MDA and GSH-Px levels in the hepatopancreas, gonad and muscle tissues of freshwater crayfish, Astacus leptodactylus, in culture condition changed both tissues and sex.
AtıfWoS4İncele - MakaleYalnız künye2011Scopus SJRQ2Antibacterial Effects of Some Fermented Commercial and Homemade Dairy Products and 0.9% Lactic Acid against Selected Foodborne Pathogens
Yesillik, S.; Yildirim, N.; Dikici, A.; Yildiz, A.
In this study, the antibacterial effects of homemade yoghurt, commercial yoghurt, commercial kefir and probiotic yoghurt on viability of Salmonella typhimurium (ATCC 14028), Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) and Staphylococcus aureus (ATCC 25923) was investigated by using disc diffusion method. Antibaterial effects of the samples were tested at 24, 48 h and the 7 day intervals. Homemade yoghurt showed the maximum antibacterial effect against the pathogens. It was determined that the most sensitive pathogenic bacteria to dairy products were Salmonella typhimurium whereas the least sensitive pathogen was Pseudomonas aeruginosa. Comparing to the antimicrobial effect of 0.9% lactic acid which was used as positive control, our results concluded that the bacteria found in fermented dairy products have an antibacterial activity and this activity is not caused by only lactic acid.
AtıfWoS23OpenAlex38İncele - MakaleYalnız künye2011Scopus SJRQ3Synthesis and Characterization of Novel Ni(II), Cu(II) and Cd(II) Complexes of 4-(2-Chlorphenylazo)-1H-pyrazole-3,5-diamine
Adiguzel, Ragip; Esener, Hasan; Ergin, Zuhal; Aktan, Ebru; Sekerci, Memet
In this study, the diazotized o-chloraniline was coupled with malononitrile. The ring closure reaction of the obtained product with hydrazine monohydrate yielded 4-(2-chlorophenylazo)-1H-pyrazole-3,5-diamine (L). The structure of ligand has been elucidated by spectroscopic analyses. Then, novel Ni(II), Cu(II), Cd(II) complexes of ligand have been synthesized and the structures of these complexes determined by elemental analysis, spectrometric and TGA/DTA methods and magnetic susceptibility measurements. All complexes were monomeric and diamagnetic. From the elemental analyses and mass spectra data, the complexes were proposed to the formulae [Ni2L2(Cl)(2)]center dot 2Cl center dot 0.5DMF center dot 0.5H(2)O(2), [Cu3L2(Cl)(4)(OH)(2)(H2O)(2)]center dot 0.5H(2)O and [Cd3L2(Cl)(2)(OH)(2)](Cl)(2)center dot 1.5H(2)O. For the Ni(II) complex square planar and for the Cu(II) complex octahedral geometry were proposed, but the Cd(II) complex includes both four and six coordinated structures. The Cu(II) and the Cd(II) complexes were found to be trinuclear. On the other hand the Ni(II) complex was found to be dinuclear.
AtıfWoS7İncele - MakaleYalnız künye2011Scopus SJRQ3Synthesis and Structural Characterization of Bis(2-amino-1,3,4-thiadiazolyl)methane Complexes
Adiguzel, Ragip; Ergin, Zuhal; Sekerci, Memet; Tascioglu, Senay
In this study, some transition metal complexes of the bis(2-amino-1,3,4-thiadiazolyl)methane (L) derived from the condensation of malonic acid and thiosemicarbazide, have been synthesized and characterized by IR, H-1-NMR spectra, elemental analyses, magnetic susceptibility and thermogravimetry-differential thermal analysis (TGA-DTA). Coordination numbers of monomeric, Ni(II), Zn(II), and Cd(II) complexes and dimeric Cu(II) complex were found to be four, five, six, and five, respectively. According to the elemental analyses and mass spectra data, the following complex formulas were proposed;[Ni-2(L)(SO4)(2)(H2O)(2)]center dot CH3OH center dot 0.5H(2)O, [Cu(L)(SO4)(H2O)](2)DMF center dot 3H(2)O, [Zn(L)NO3 center dot H2O]center dot NO3 center dot DMF, and [Cd(L)(2)(NO3)H2O]NO3 center dot DMF. Ni(II) and Cu(II) complexes were paramagnetic. Ni(II), Cu(II), and Cd(II) complexes were proposed to be tetrahedral/square planar, square pyramidal, and octahedral structure, respectively. Zn(II) complex is five coordinated. The molar conductance data revealed that Zn((II), and Cd(II) complexes were 1:1 electrolytes(ionic). Ni(II), and Cu(II) complexes were non-electrolytes.
AtıfWoS6İncele - MakaleAçık Erişim2011Scopus SJRQ2Sequential extraction of cadmium in different soil phases and plant parts from a former industrialized area
Kaplan, Olcay; Ince, Muharrem; Yaman, Mehmet
Cd concentrations in mobile phases of soil are more representative than total Cd concentration for estimating Cd bioavailability, physicochemical reactivity and mobility. In this study, selective sequential extraction procedures were used to determine Cd in different soil phases. Soil samples and plants grown in these soils were collected from a serpentine and copper-mining area in Maden-Elazig-Turkey. The extracted fractions were exchangeable/carbonate, reducible-iron/manganese oxides, oxidizable-organic matter and sulfides, and residual phases except silicates. Concentrations of Cd in soils and plant samples were determined by flame atomic absorption spectrometry and inductively coupled plasma-mass spectrometry. We found that Cd concentrations in the EDTA and NH(2)OH center dot HCl extracts are higher in most soil samples compared to the other extracts. We conclude that Cd levels in mobile phases are unexpectedly high. The observed Cd concentrations are in ranges of 0.03-3.4 mg kg(-1) for soil and 0.02-2.5 mg kg(-1) for plant parts. The percentages of cadmium up to 56% in exchangeable and carbonates fractions were observed to be significantly higher than in those values less than 2% reported in literature. This study has shown that the modified extraction method can be usefully applied to determine Cd concentrations in potentially mobile phase of soil. Furthermore, it was concluded that Brassicasea and Rumex leaves can be used as hyperaccumulator plants because their translocation factor and/or enrichment coefficient values were found to be higher than 1.0.
AtıfWoS29OpenAlex29İncele - MakaleYalnız künye2011Scopus SJRQ2BENEFICIAL EFFECTS OF GRAPE SEED EXTRACT AGAINST CISPLATIN-INDUCED TESTICULER DAMAGE IN RABBITS
Yildirim, Nuran Cikcikoglu; Kandemir, Fatih Mehmet; Benzer, Fulya
Biological compounds with antioxidant properties may contribute to the protection of cells and tissues against deleterious effects of reactive oxygen species (ROS) and other free radicals induced by cisplatin. This study was performed to investigate the possible protective role of antioxidant treatment with grape seed extract (GSE) on cisplatin-induced testes oxidant injury using biochemical approaches. The degree of protection produced by GSE was evaluated by determining the level of malondialdehyde (MDA) and glutathione (GSH), the activity of catalase (CAT), glutathione peroxidase (GSH-Px), were estimated from testes of rabbits. Male New Zealand white rabbits were divided into 3 groups (n=6): 1-Control group(1 ml saline. i.p) 2-Cisplatin group (a single dose of cisplatin (5 mg/kg, i.p) 3-A single dose of cisplatin (5 mg/kg, i.p) + GSE (250 mg/kg/day, i.p) for 6 days. MDA level were significantly higher when compared to Control (p < 0.05). In Cisplatin+grapes groups MDA levels were found significantly lower than cisplatin group (p < 0.05). GSH levels were decreased with cisplatin compared to control but in case of cisplatin+ GSE it increased (p < 0.05). In treated rabbits, the activity of CAT and GSH-Px was decreased in cisplatin and cisplatin+ GSE groups compared to control (p < 0.001). These results indicate that the antioxidant GSE might have a protective effect against cisplatin-induced testiculer damage and oxidative stress in rabbit.
AtıfWoS12İncele - MakaleYalnız künye2011Scopus SJRQ3DETECTION OF YERSINIA RUCKERI BY POLYMERASE CHAIN REACTION (PCR) IN INFECTED RAINBOW TROUT (ONCORHYNCHUS MYKISS WALBAUM 1792)
Seker, E.; Karahan, M.; Sarieyyüpoglu, M.; Çetinkaya, B.
This study was conducted to induce experimental infection in rainbow trout with Y. ruckeri, the causative agent of ERM disease and progress of the disease was then monitored over the time period. Application of PCR for early and accurate diagnosis of infection was also investigated. Total 100 fish were allocated to four experimental and a control group each containing 20 fish. There were 20 aquaria and five fish were housed in each aquaria. There were 4 replicates for each group. Fish, at an average weight of 75 g, were injected intramuscularly with 0.1 ml dilutions of Y. ruckeri at various doses (4x10(8), 1x10(8), 4x10(4) and 1x10(4) per ml) in the experimental groups. Blood samples were collected from fish that showed typical signs of the disease. DNA's extracted from blood samples were subjected to PCR amplification based upon a pair of Y. ruckeri specific primers. Following agarose gel electrophoresis of the PCR products, positive bands with the molecular size of approximately 589 bp which were considered indicative for identification as Y. ruckeri were observed. In addition, isolation and identification of Y. ruckeri from various internal organs of infected fish were made by conventional culture method. The results suggested that early diagnosis of ERM disease can be made while fish are alive and diseased fish can be isolated and treated accordingly which will help decrease economic losses.
AtıfWoS3İncele - MakaleYalnız künye2011Scopus SJRQ1Petrology and petrogenesis of carbonatitic rocks in syenites from central Anatolia, Turkey
Cooper, Alan F.; Boztug, Durmus; Palin, J. Michael; Martin, Candace E.; Numata, Mihoko
The late Cretaceous A-type Kara double dagger ayA +/- r pluton in Central Anatolia, Turkey, intrudes and entrains xenoliths of Palaeozoic limestone. Carbonatitic magmatic rocks within the syenite have been previously interpreted (Schuiling in Nature, 192:1280, 1961) to result from metasomatic alteration and syntectic melting of marble. Carbonatites and associated calcite-syenites exhibit mineralogical characteristics (Ab-rich plagioclase, Ba-rich K-feldspar, low-Mg# biotite) that are petrogenetically more evolved than the host syenitic suite. Geochemically, carbonate-rich magmatic rocks are greatly enriched in Sr, Ba, Th, and REE and have higher LREE/HREE ratios than either syenites or marbles. In terms of O-C-Sr-Pb isotope ratios, the carbonatite/calcite-syenite suite form a consistent and geochemically coherent group that is distinct from the marble country rock and xenolith population, but similar to some of the syenitic, and particularly the nepheline syenite components of the Kara double dagger ayA +/- r pluton. Other silicate magmatic rocks are geochemically, isotopically, and geochronologically different, suggesting the pluton is composite. Overall, the mineralogical and geochemical characteristics of the carbonatites are incompatible with binary mixing of syenite and marble but are consistent with derivation of carbonatite from petrogenetically evolved foid syenite. Carbonate-silicate rock types have modal variations compatible with an origin by fractional crystallisation, rather than by liquid immiscibility.
AtıfWoS17OpenAlex17İncele - MakaleAçık Erişim2011Scopus SJRQ2Sequential and Selective Extraction of Copper in Different Soil Phases and Plant Parts from Former Industrialized Area
Kaplan, Olcay; Kaya, Gokce; Yaman, Mehmet
Copper (Cu) is an essential trace element for all living organisms; however, excess amounts in soil, plants, and food have negative impacts on the environment and human health. The aim of this study was to determine Cu levels in different chemical phases of soils and the relationship between Cu levels in soil phases and concentrations in plants. Soils and plants grown in these soils from an industrialized area in Turkey were analyzed using a selective and four-stage sequential extraction procedure. Copper levels in exchangeable fractions were found up to 658 mg kg(-1) while total levels were in the range of 133-5609 mg kg(-1). Copper concentrations in plant parts (roots and stem) were in the range of 2.6-240 mg kg(-1). The exchangeable forms of Cu were in the range of 3-22% of total Cu concentrations. The relationships were observed between soil Cu and Rumex plant Cu, and soil Cu and root of Brassicasea plant Cu.
AtıfWoS11OpenAlex10İncele - MakaleYalnız künye2011Scopus SJRQ4Investigations on the growth kinetics of hantzschia amphioxys homa lagoon by izmir bay (Aegean Sea)
Kutlu, Banu; Buyukisik, Baha
zschia amphiarys were investigated under continuous-light period and batch culture conditions. The optimum temperature and light intensities were found as 18 degrees C and 52 mu mol/m(2)s (saturasyon light), respectively. mu(max) and K-s values estimated for each nutrient were obtained as follows: ammonia for 1.528 day(-1) 2.959 mu g-at- NH4+-N/L, nitrate 1.22 day(-1), 7.01 mu g-at NO3- -N/L, phosphate 1.767 and 1.172 day(-1) 5.07 and 0.460 mu g-at PO4-(3)-P/L, silicate 1.141 day(-1) and 0,499 mu g-at Si/L. Carrying capacity values estimated for each nutrients were obtained as follows: nitrate 113,7 mu g chl a/L, 190.11 phosphate 113.7 mu g chl a/L, 1.798. Nitrogen limiting nutrients was found as in this study.
AtıfWoS2İncele - MakaleYalnız künye2011Scopus SJRQ2Immunostimulating Effect of Levamisole on Spleen and Head-Kidney Leucocytes of Rainbow trout (Oncorhynchus mykiss, Walbaum 1792)
Seker, Engin; Ispir, Unal; Dörücü, Mustafa
An in vitro cultivation method for spleen and head kidney organ section were used to investigate the effects of levamisole on the immune response. After 10 days of culture with 10 mu g/ml, 50 mu g/ml and 100 mu g/ml or no levamisole in the culture media, the non specific defense reaction were measured by glass-adherent NBT (nitroblue tetrazolium) positive cells activation and phagocytic activity. Elevation in phagocytic activity was found for 10 mu g/ml and 50 mu g/ml levels of levamisole (P < 0.001), but no differences were found at levels of phagocytic activity in between 100 mu g/ml levamisole groups and control groups (P > 0.05). In the spleen and head kidney leucocytes, increased response to levamisole was shawn for all doses in the glass-adherent NBT positive cells activation.
AtıfWoS7İncele - MakaleAçık Erişim2011Scopus SJRQ4Constituents of the Essential Oils of Two Hypericum capitatum Choisy Varieties (var. capitatum and var. luteum Robson) from Turkey
Bagci, Eyup; Yuce, Ebru
The essential oils from the aerial parts of two varieties (var. capitatum and var. luteum Robson) of Hypericum capitatum (Sect. Drosanthe) grown in Turkey were analyzed by GC and GC-MS. Forty-eight compounds were identified in the essential oils of var. capitatum with alpha-pinene (20.3 %), caryophyllene oxide (11.8 %), hexadecanoic acid (8.9 %), beta-caryophyllene (6.5 %) and undecane (3.8 %) as main constituents. Thirty-eight components were identified in the oil of var. luteum with camphor (15.3 %), germacrene D (10.5 %), beta-myrcene (7.4 %), caryophyllene oxide (6.5 %) and beta-cububene (6.3 %), as the abundant components. More quantitative and qualitative differences were determined between two varieties of H. capitatum essential oils. The results were discussed in means of renewable resources and chemotaxonomy.
AtıfWoS15İncele - MakaleYalnız künye2010Scopus SJRQ3The Use of Gillnets for Estimation of Fish Stocks
Yuksel, Fahrettin; Celayir, Yasin
In this research it has been targeted to estimate fishable stocks of Karakaya Dam Lake (in Turkey) by using fishing with gillnets method that had been suggested as an alternative method for estimating fish stocks. Productivity per hectare in the dam lake and the amount of fishable stocks has been calculated to be 13.67 kg ha(-1) and 312.005 kg year(-1), respectively. Fishable stocks have also been analyzed with respect to fish species. According to this, Capoeta sp. is estimated to be 184.107 kg year(-1) (8.06 kg ha(-1)), Cyprinus carpi carpio is estimated to be 56.353 kg year(-1) (2.47 kg ha(-1)), Barbus sp. is estimated to be 40.580 kg year(-1) (1.78 kg ha(-1)), Squalius cephalus is estimated to be 30.455 kg year(-1) (1.34 kg ha(-1)) and Onchorincus mykiss is estimated to be 510 kg year(-1) (0.02 kg ha(-1)).
AtıfWoS3İncele - MakaleYayıncıda açık erişim2010Scopus SJRQ3A Research on the Fish Production and Catching Efficiency in the Keban Dam Lake
Yüksel, Fahrettin; Celayir, Yasin
The study was carried out in 16 different regions of Keban Dam Lake (in Turkey) between 2002 and 2008. The data were taken from cooperative chairmen and members who carried out fisheries activities at the end of fishing season. The amounts of produced fish were evaluated according to fishing season, fisheries place and fish species. The fish were caught 483 tons during the 2002-2003 fishing season, 825 tons during the 2003-2004 fishing season, 653 tons during the 2004-2005 fishing season, 775.7 tons during the 2005-2006 fishing season, 685 tons during the 2006-2007 fishing season and 688 tons during the 2007-2008 fishing season. The produced fish were composed of Capoeta sp. (39%), Barbus sp. (29%), Cyprinus carpio carpio (24.4%), Squalius cephalus (3.8%), Astacus leptodactylus (3%), Alburnus mossulensis (0.6%) and Acanthobrama marmid (0.2%). The average 191 motor boats, 418000 m gillnets and 33665 crayfish fyke nets were used for a year. However, it depends on the fishing season.
AtıfWoS5İncele - BildiriYalnız künye2010CONTROL OF FLOW AROUND A SQUARE PRISM BY USING SYNTHETIC JET
Akansu, Yahya Erkan; Firat, Erhan; Vit, T; Dancova, P
Control of the flow around a square prism by means of synthetic jet through a single slot located on middle of upper surface of the model has been investigated experimentally for Reynolds number of 8000. Synthetic jet was implemented by using a pneumatic piston-cylinder which was driven by means of an electrical motor. The frequency and stroke of the piston were changed to obtain various values of the flow control parameters. For various excitation frequency and momentum coefficients of the synthetic jet, the mean and fluctuating pressure distributions on the square prism were measured. The velocity measurements at the slot exit and at a specific coordinate were conducted by means of constant temperature anemometer (CTA). Vortex shedding frequencies obtained by the spectral analysis of both pressure-time and velocity-time history. At a value of synthetic jet excitation frequency, vortex pairs generated at slot were perturbed the shear layer that separated from the upper leading edge of square model and disturbs it. When the synthetic jet excitation frequency closes enough to the vortex shedding frequency, the lock-in of vortex shedding frequency onto the exciting frequency was occurred. On the other hand, increasing excitation frequency of the synthetic jet causes a pressure recovery on the surface of the prism within the wake region. The efficiency of the synthetic jet is classified depending on change of the drag coefficient and vortex shedding frequency.
AtıfWoS1İncele - MakaleYalnız künye2010Scopus SJRQ3Variation in Advertisement Call Properties of the Japanese Quail
Sezer, M.; Tekelioglu, O.
The aim of this study was to investigate the amount variation in four spectral and six temporal properties of advertisement calls between and within-male Japanese quail and to establish the effect of age of sexual maturation to these properties. The first, second, third syllables and damping parts were 68.2, 74.3, 501.1 and 95.9 ms long, on average, and had peak frequencies of 1719.9, 1989.9, 2203.2 and 2352.7 Hz, respectively. There was high between individual variations in all call traits. In relation to within-male variation, there were high medians and low ranges for spectral properties while low medians and high ranges for temporal properties. Moderate positive correlations between syllable lengths and age of sexual maturation, low negative correlations between interval lengths and age of sexual maturation were observed. Repeatability of the advertisement call characteristics were hid, but estimates for spectral properties were slightly lower (0.66-0.82) than that for temporal properties (0.89-0.96). These results suggest that temporal call parameters have the potential to be used in individual identity and these traits might carry information used by females in mate choice. Spectral properties could be recognized as stable call properties that may be used in efficient transmission or species recognition.
AtıfWoS3İncele - MakaleYalnız künye2010Scopus SJRQ3Comparison of Hatching Performances and Yolk Sac Absorptions of Black Sea Trout (Salmo trutta labrax Pallas, 1811), Brook Trout (Salvelinus fontinalis Mitchill, 1814) and Their Hybrid
Basçinar, Nadir; Kocabas, Mehmet; Sahin, Sebnem Atasaral; Okumus, Ibrahim
The aims of this study were to determine hatching performance, body and yolk weight at hatching, the growth rate during the yolk absorption and yolk conversion efficiency of Black Sea trout, brook trout and their hybrid larvae, and to compare the relationships between length, total wet weight, dry yolk body weights of alevins and degree-days. The Black Sea trout egg has shorter incubation duration than brook trout and their hybrid. Survival from fertilization to swim-up of brook trout, Black Sea trout, and hybrid were 45.8%, 54.3% and 30.7%, respectively. Length, total wet weight, dry larva weights, and dry yolk weights of brook trout, Black Sea trout and hybrid exhibited a linear relationship with degree-days; dry yolk weight decreased, while length, total wet weight and dry body weight increased with degree-days. The linear regression parameters excluding length slope were significantly different. Length and weight increase as well as growth rates, daily yolk sac consumption and yolk sac efficiency values were calculated as 0.21 mm/day, 0.63 mg/day, 0.30 mg/day, and 0.61 for brook trout; 0.19 mm/day, 0.87 mg/day, 0.60 mg/day, and 0.76 for Black Sea trout, and 0.20 mm/day, 0.45 mg/day, 0.28 mg/day, and 0.46 for hybrid, respectively.
AtıfWoS5İncele