MCBÜ Açıkerişim Sistemi :: Browsing by Author "Öztürk M."

Browsing by Author "Öztürk M."

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Copper, zinc, lead and cadmium concentrations in the Mediterranean mussel Mytilus galloprovincialis lamarck, 1819 from the Sinop coast of the Black Sea
(1999) Bat L.; Gündoǧdu A.; Öztürk M.; Öztürk M.
The concentrations of copper, zinc, lead and cadmium in the living tissue of the Mediterranean mussel Mytilus galloprovincialis from the Sinop coasts of the Black Sea were measured by absorption spectrophotometry for monitoring metal pollution in the coastal water. A statistically significant difference in the concentrations of all metals was observed among four sampling stations. The results were compared with previous studies and discussed.
Marine algae of Kilitbahir shore (Gelibolu, Çanakkale, Turkey)
(2003) Taşkin E.; Öztürk M.; Kurt O.; Öztürk M.
During a survey of marine algae growing at Kilitbahir coast (Çanakkale Bosphorus, Sea of Marmara, Turkey), collection were made at the upper-infralittoral region in 1999. Out of 87 species belonging to the divisions Cyanophyta, Chlorophyta, Phaeophyta, Rhodophyta identified, 34 of which are being reported for the first time from the coast of Kilitbahir and 5 from Sea of Marmara. Distribution of the identified specimens according to their orders and mode of occurrence in the algal flora of Kilitbahir shores of Turkey is being presented.
The marine algae of ayvalik (Aegean Sea, Turkey)
(Middle East Technical University, 2005) Taskin E.; Öztürk M.
This paper contains taxonomic studies on the red algae (Rhodophyceae), brown algae (Phaeophyceae) and green algae (Chlorophyceae) of the Ayvalik (Aegean Sea, Turkey). Sampling were done at the upper-infralittoral zone between March 2002 and August 2004. The material was collected with snorkeling and SCUBA, and specimens were preserved in 4% formaldehyde in sea water and deposited in the Department of Biology, Celal Bayar University. In this study, two species of Rhodophyceae are reported from the eastern Aegean Sea (Turkey) for the first time: Botryocladia madagascariensis Feldmann-Mazoyer (Rhodymeniales, Rhodymeniaceae) and Monosporus pedicellatus (Smith) Solier (Ceramiales, Ceramiaceae).
First report of Microspongium globosum Reinke (Phaeophyceae, Myrionemataceae) in the Mediterranean Sea
(2006) Taşkin E.; Öztürk M.; Wynne M.J.
Microspongium globosum Reinke (Phaeophyceae, Myrionemataceae) is reported for the first time in the Mediterranean Sea. This species was collected growing as an epiphyte from the Dardanelles (Sea of Marmara, Turkey) in the midlittoral zone (-1 m). Thalli formed small clumps, or tufts, 0.5-1.0 mm in diameter, consisting of branched erect filaments. Only plurilocular sporangia were observed. A key to the Mediterranean species of Microspongium is provided. © 2006 J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung.
A first report on the marine algal flora of Turkey: Pseudolithoderma adriaticum (Phaeophyceae, Lithodermataceae)
(2008) Taşkin E.; Öztürk M.
In this study, the brown alga Pseudolithoderma adriaticum (Hauck) Verlaque (Phaeophyceae, Lithodermataceae) is reported for the first time from Turkey. This species, with a distribution primarily in the Mediterranean Sea, was collected growing epilithically in the midlittoral zone (-0.5 m) in March 2007 from Ayvalik (Aegean Sea, Turkey). © by PSP.
The corallinales (rhodophyceae) along the Aegean coasts of Turkey as bioindicators of climatic seasonal patterns
(2009) Kurt O.; Babbini L.; Codogno M.; Bressan G.; Öztürk M.
The Corallinales of the Aegean coasts of Turkey have been relatively little studied, from both the floristic and the ecological point of view. The Turkish coasts offer a wide variety of environmental conditions, and the present study identifies and characterizes not only the presence or absence of these species, but also assesses their value as bioindicators. Qualitative collection of Corallinales was performed at 14 sites in a bathymetric range from 2 to 5 m depth, where, at the same stations, the main environmental variables were recorded. The subsequent data analysis proceeds in the following three-phase procedure: i) identification of well-characterized sample groups with regards to the ecological factors mostly influencing their floristic composition; ii) identification of ecological species groups on the basis of their frequency in the sample groups; iii) ecological gradient analysis based on a reciprocal ordering method. From an ecological viewpoint, the bioindicator value of Corallinales was shown by the fuzzy c-means clustering data analyses. These species of Corallinales seems to be linked to two main environmental factors: salinity and temperature.
Detergent and phosphate pollution in Gediz River, Turkey
(2009) Minareci O.; Öztürk M.; Egemen Ö.; Minareci E.
The Gediz River, located in western Turkey, drains a region with a high population density and a strong economic activity. These factors, together with a lack of facilities for appropriate treatment of domestic and industrial sewage, are putting increasing pressure on water resources. The aim of the present study was to identify point sources of detergent pollution and to assess the surface water quality in the Gediz River by monitoring physicochemical variables. Point sources of wastewater, including some with a high pollution load, were detected in the most populated and industrialized areas of Manisa and Muradiye municipalities. These sources contribute to increasing degradation of water quality observed in the river. Concentrations of anionic detergents and phosphate were 0.084 - 5.592 g m-3 and 0.0044 - 0.248 g m -3, respectively. Gediz River is a significant contributor of nutrients to the Aegean Sea. © 2009 Academic Journals.
Metal bioaccumulation by barley in mesaoria plain alongside the nicosia-famagusta highway, Northern Cyprus
(2009) Gücel S.; Koçbaş F.; Öztürk M.
Mesaoria plain is mainly used for agricultural purposes and contains 50 % of the barley fields in Northern Cyprus. The construction of a highway from Nicosia to Famagusta that passes through the plain has resulted in an increasing number of vehicles from 1997 to 2006, the majority of which run on leaded gasoline. Barley is cultivated on a large scale along the Nicosia-Famagusta highway, and was tested as a possible biomonitor for heavy metals. During the vegetative period, samples of barley plants and soil were collected at 4 distances (0, 50, 100 and 500 m) from the highway, at 4 sites, from January to April 2006. The highest concentrations of Ph++ (2.82 μg g -1), Cd++" (1.52 μg g-1), Cr ++(2.86 μg g.1), Zn++(51.8 μg g -1) and Cu++(19.8 μg g-1) were recorded in soil collected beneath the highway, and the lowest in samples collected at 500 m from the highway, for Pb++ (0.54 μg g-1) in the above-ground parts of barley, Cr++ (0.85 μg g-1) in soil, and Zn++ (7.2 μg g-1) in barley plant roots. A positive relationship was found between soil and plant heavy metal concentrations. According to the EU Directive 86/278/EEC on the protection of the environment and, in particular, of the soil, concentrations of Pb44" and Zn++ are below the threshold, Cd++ are between the limits and Cr++ are above threshold.
Determination of heavy metals in fish, water and sediments of avsar dam lake in Turkey
(2009) Öztürk M.; Özözen G.; Minareci O.; Minareci E.
In the present study, some heavy metals (Cd, Cr, Cu, Fe, Ni and Pb) were seasonally determined in water, sediment and some tissues of Cyprinus carpio from Avsar Dam Lake, which is an important water source for irrigation and drinking in Turkey. Heavy metal levels in water, sediment and fish samples were analyzed by inductively coupled plasma spectroscopy (ICP/AES). The obtained results showed that the average values of Fe in water samples were higher than the respective reference values for fresh water. Results for levels in water were compared with national and international water quality guidelines, as well as literature data reported for the lakes. The analysis of heavy metals in sediments indicated that among the six heavy metals tested, Fe was maximally accumulated, followed by Ni, Cu, Cr, Pb and Cd. Heavy metal concentrations were found to decrease in sequence of the Cyprinus carpio samples, in the muscle and stomach-intestine as Fe > Cu > Pb> Ni > Cr > Cd; in the gill, heart and liver as Fe > Cu > Ni > Pb > Cr > Cd and in the air sac as Fe > Cu > Ni > Pb > Cd >Cr. In the fish samples, cadmium, chromium, nickel and lead concentrations exceeded the tolerable values provided by international institutions.
Taxonomy and description of the three marine cyanophycean algae from the Mediterranean Sea; [Türkiye'nin Akdeniz Kıyılarında Yayılış Gösteren Üç Mavi-Yeşil Alg Türünün Tanımlanması ve Taksonomisi]
(Central Fisheries Research Inst, 2010) Kurt O.; Ulcay S.; Taşkin E.; Öztürk M.
In the present study, three marine Cyanophycean species from the Mediterranean are reported and described. These species were: Phormidium boryanum (Bory ex Gomont) Anagnostidis and Komárek (1988), Oscillatoria sancta f. caldariorum (Hauck) Lagerheim and Elenkin (1949) and Lyngbya anomala (C.B.Rao) Umezaki and Watanabe (1994), all members of the Oscillatoriales. The samples were collected from mid-littoral zones of Dikili Gulf (Aegean Sea, Turkey). The samples were kept in jars, fixed in 4% formaldehyde-sea water. The algae were identified under the microscope, mounted directly between lam and lamel. Current literature sources were used for the determinations. The photographs were taken using normal microphotography techniques. Data concerning distribution, morphology and ecology of each species are also given. © Published by Central Fisheries Research Institute (CFRI) Trabzon, Turkey.
Two brown algae from the eastern mediterranean sea: Microcoryne ocellata strömfelt and corynophlaea flaccida (C. Agardh) kützing
(2010) Taşkin E.; Kurt O.; Cormaci M.; Furnari G.; Öztürk M.
The finding of both Microcoryne ocellata Strömfeit and Corynophlaea flaccida (C. Agardh) Kützing from Turkey and North Cyprus (Mediterranean Sea) is reported. A comparison between both taxa, often confused by some authors, is given. This is the first documented record of the cold-temperate species M ocellata from the Mediterranean Sea. A taxonomic comment on C. flaccida, an endemic species in the Mediterranean Sea, is also given. © by PSP.
Cylindrocarpus kuckuckii sp. nov. (Chordariaceae, Phaeophyceae), a newly recognized species from the Aegean Sea (Turkey)
(2010) Taskin E.; Wynne M.J.; Öztürk M.
Cylindrocarpus kuckuckii sp. nov. (Chordariaceae, Phaeophyceae) is described on the basis of two collections from Ayvalik, Turkey (Aegean Sea). This taxon has been recognized for more than a century by several workers, starting with Kuckuck (1899), as a form of C. microscopicus which is the type and hitherto only recognized species in the genus. Evidence is presented here that C. kuckuckii can be distinguished from C. microscopicus at the species level by its epilithic habit, the pseudodichotomous nature of its erect branches, the larger sizes of the cells of the assimilatory filaments, the relatively larger size of the plurilocular sporangia and its larger overall thallus dimensions. © 2010 J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung.
Inhibitor activities of some seaweeds from the Aegean coast of Turkey
(2011) Taşkin E.; Taşkin E.; Öztürk M.
In this study methanolic extracts of four seaweeds belong to Phaeophyceae (Petalonia fascia, Stypocaulon scoparium) and Chlorophyceae (Cladophora prolifera, Codium fragile) that were collected from the Aegean coast of Turkey have been studied for their inhibitor activity against pathogenic microbes (Staphylococcus aureus, Staphylococcus epidermidis, Salmonella typhimurium, Enterobacter aerogenes, Escherichia coli, Enterococcus faecalis and Escherichia coli O157:H7), in vitro. Against the extracts of all the tested marine algae, S. aureus was the most sensitive bacteria since it was inhibited by most of the extracts. On the other hand, the highest inhibitor activity was shown to Enterobacter faecalis by the extract of Codium fragile. Whereas, the growth of Salmonella typhimurium and Enterobacter aerogenes were not inhibited by any of the extracts.
Ethnobotanical survey of medicinal plants used for the treatment of diabetes in Manisa, Turkey
(2013) Durmuskahya C.; Öztürk M.
In this study, medicinal plants which are traditionally used for treatment of diabetes mellitus in Manisa and its environs have been investigated. A detailed market survey and ethnobotanical enquiry was performed in the region. In all, 121 medicinal herb dealers were interviewed together with the patients suffering from diabetes. After questionnaire studies, plant specimens were collected from medicinal herb markets known locally as 'aktars' or 'baharatchi', a total of 27 plant taxa belonging to 15 families were identified to be used for the treatment of diabetes. These taxa mostly belonged to the families Rosaceae (5 taxa), Lamiaceae (3 taxa), Fabaceae (2 taxa) and Asteraceae (2 taxa). The most important anti-diabetic plants are; Zizyphus jujube Mill. (jujube), Origanum onites L. (oregano), Ceracus mahaleb L. (mahaleb) and Trigonella foenum-graecum L. (fenugreek). Attempts are being made to investigate their active compounds responsible for the hypoglycemic activity.
Studies on the morphology, anatomy and ecology of ophrys lutea cav. subsp. minor (Guss.) O. Danesch & E. Danesch ex Gölz & H.R. Reinhard (orchidaceae) in Turkey
(Pakistan Botanical Society, 2014) Durmuskahya C.; Ozdemir C.; Bozdag B.; Öztürk M.
In this study, morphological, anatomical and ecological characteristics of Ophrys lutea subsp. minor in Turkey were investigated. The plant material was collected from 30 different populations during 2010-2013. In all 19 morphological and 20 anatomical features were investigated, and habitat characteristics recorded. The soil samples were also collected from the plant sampling sites and subjected to an analysis for 18 characteristics. The minimum plant length was 69 mm and maximum 323 mm, minimum length of underground part was 29 mm, and maximum 49 mm, and the number of leaves varied between 1-10. The ecological characteristics revealed that O. lutea subsp. minor flourishes well from sea level to 800 m, and the most common habitats of O. lutea subsp. minor are rocky limestones, phrygana, macchie, olive gorves, woodland margins.
Marine benthic Cyanobacteria in Northern Cyprus (Eastern Mediterranean Sea)
(Turkiye Klinikleri Journal of Medical Sciences, 2015) Ulcay S.; Taşkin E.; Kurt O.; Öztürk M.
In this paper, 47 taxa (15 Chroococcales, 20 Oscillatoriales, and 12 Nostocales) of Cyanobacteria that were collected along the coasts of Northern Cyprus (Eastern Mediterranean Sea) are reported. Aphanocapsa litoralis (Hansgirg) Komarek & Anagnostidis, Coelosphaerium minutissimum Lemmermann, Chroococcus cf. turicensis (Nageli) Hansgirg, Chroococcus varius A.Braun, Spirulina tenerrima Kutzing ex Gomont, Calothrix fuscoviolacea P.L.Crouan & H.M.Crouan ex Bornet & Flahault, Rivularia nitida C.Agardh ex Bornet & Flahault, and Scytonematopsis pilosa (Harvey ex Bornet & Flahault) I.Umezaki & M.Watanabe are recorded for the first time from the Mediterranean Sea, and 35 taxa are also recorded for the first time from Northern Cyprus. Data are also provided concerning the geographical, morphological, and ecological distribution of each species. Sampling was based on 4 different localities (Korucam, Girne, Dip Karpaz, and Gazimağusa) in the Northern Cyprus marine ecosystem supralittoral zone at a depth of 30-35 m in the infralittoral zone between 2006 and 2008. © TÜBİTAK.
Microstructure and Electrical Conductivity of ZnO Addition on the Properties of (Bi0.92Ho0.03Er0.05)2O3
(Springer New York LLC, 2016) Ermiş I.; Çorumlu V.; Sertkol M.; Öztürk M.; Kaleli M.; Çetin A.; Turemiş M.; Arı M.
The solid electrolyte is one of the most important components for a solid oxide fuel cell (SOFC). The various divalent or trivalent metal ion-doped bismuth-based materials exhibit good ionic conductivity. Therefore, these materials are used as electrolytes in the SOFC. In this paper, the samples of (Bi0.92−xHo0.03Er0.05)2O3 + (ZnO)x solutions with a 0 ≤ x ≤ 0.2 molar ratio are synthesized by the solid state reaction method. The detailed structural and electrical characterizations are investigated by using x-ray diffraction (XRD), alternating current electrochemical impedance spectroscopy, and scanning electron microscopy (SEM). The XRD patterns of all samples are indexed on a monoclinic symmetry with a P21/c space group. In addition, the rietveld parameters are determined by using the FullProf software program. The impedance measurements of the samples are obtained at the 1 Hz to 20 MHz frequency range. The impedance value of the pellets increases with temperature. Based on the impedance results, it is found that the contribution of grain (bulk) is more than a grain boundary in terms of conductivity, which permits the attribution of a grain boundary. The ionic conductivity decreases with an increasing amount of Zn contribution. The value of highest electrical conductivity among all samples is calculated as 0.358 S cm−1 at 800°C for undoped (Bi0.92Ho0.03Er0.05)2O3. © 2016, The Minerals, Metals & Materials Society.
Investigation of heavy metal pollution in eastern Aegean Sea coastal waters by using Cystoseira barbata, Patella caerulea, and Liza aurata as biological indicators
(Springer Verlag, 2017) Aydın-Önen S.; Öztürk M.
In order to have an extensive contamination profile of heavy metal levels (Cd, Cu, Fe, Mn, Ni, Pb, and Zn), seawater, sediment, Patella caerulea, Cystoseira barbata, and Liza aurata were investigated by using inductively coupled plasma-atomic emission spectrometry (ICP-AES). Samples were collected from five coastal stations along the eastern Aegean Sea coast (Turkey) on a monthly basis from July 2002 through May 2003. According to the results of this study, heavy metal levels were arranged in the following sequence: Fe > Pb > Zn > Mn > Ni > Cu > Cd for water, Fe > Cu > Mn > Ni > Zn > Pb > Cd for sediment, Fe > Zn > Mn > Pb > Ni > Cd > Cu for C. barbata, Fe > Zn > Mn > Ni > Pb > Cu > Cd for P. caerulea, and Fe > Zn > Mn > Cu > Ni > Pb > Cd for L. aurata. Moreover, positive relationships between Fe in water and Mn in water, Fe in sediment and Mn in sediment, Fe in C. barbata and Mn in C. barbata, Fe in P. caerulea and Mn in P. caerulea, and Fe in L. aurata and Mn in L. aurata may suggest that these metals could be originated from the same anthropogenic source. C. barbata represented with higher bioconcentration factor (BCF) values, especially for Fe, Mn, and Zn values. This observation may support that C. barbata can be used as an indicator species for the determinations of Fe, Mn, and Zn levels. Regarding Turkish Food Codex Regulation’s residue limits, metal values in L. aurata were found to be lower than the maximum permissible levels issued by Turkish legislation and also the recommended limits set by FAO/WHO guidelines. The results of the investigation indicated that P. caerulea, L. aurata, and especially C. barbata are quantitative water-quality bioindicators and biomonitoring subjects for biologically available metal accumulation for Aegean Sea coastal waters. © 2017, Springer-Verlag Berlin Heidelberg.
Paliperidone metabolic effects in children and adolescents: A case report
(ANP Publishing, 2017) Kefal M.I.; Kandemir H.; Sapmaz S.Y.; Öztürk M.; Özkan Y.; Özkan O.G.
The use of atypical antipsychotics in children and adolescents has increased in recent years. A 16-year-old male patient reported that he had used paliperidone for 3 years and had gained weight during this period. Various laboratory tests were performed when the patient started treatment in our clinic. It is evident from the test result that 3-year use of paliperidone dramatically increased fasting blood sugar, total cholesterol, low-density lipoprotein, triglycerides and prolactin levels in the patient. The metabolic parameters of the patient decreased into the normal range once the medication was stopped. Thus, paliperidone should be used carefully based on the side effects for patients under 18 years of age. © 2017 ANP Publishing. All rights reserved.
Validity and reliability of DSM-5 level 1 cross-cutting symptom scale Turkish version (Child form for 11-17 years and parent form for 6-17 years); [DSM-5 düzey 1 kesitsel belirti ölçeği Türkçe formunun geçerliliği ve güvenilirliği (11-17 yaş çocuk ve 6-17 yaş anne-baba formları)]
(Cukurova University, Faculty of Medicine, 2017) Yalin Sapmaz Ş.; Özek Erkuran H.; Kavurma C.; Öztürk M.; Uzel Tanriverdi B.; Köroğlu E.; Aydemir Ö.
Objective: This study aimed to assess the validity and reliability of the Turkish version of DSM-5 Level 1 Cross-Cutting Symptom Scale’s child and parent forms. Methods: The scale was prepared by carrying out the translation and back translation of DSM-5 Level 1 Cross-Cutting Symptom Scale’s Child and Parent Forms. Study group consisted of community and clinical samples. The scale was applied to 244 parents and 320 adolescents that represented the clinical and community sample. For the assessment, Strengths and Difficulties Questionnaire (SDQ) was used along with Level 1 Cross-Cutting Symptom Scale. For reliability analyses, internal consistency coefficient and item- total score correlation analysis, test- retest factor analysis, interrater reliability and as for validity analyses; exploratory factor analysis and correlation analysis with Strengths and Difficulties Questionnaire for concurrent validity were carried out. Results: Cronbach’s alpha values for DSM-5 Level 1 Cross-Cutting Symptom Scale’s Child Form was 0.893 while 0.90 for parent form. Correlation coefficient of DSM 5 Level 1 Cross-Cutting Symptom Scale as a result of its correlation with Strengths and Difficulties Questionnaire was 0.698 for child form and 0.706 for parent form which was statistically significant. Correlation coefficient in test-retest application was r=0.965 for child form and r=0.919 for parent form. As for construct validity, six factors were maintained that would explain 59.3% of the variance in child form. In the parent form, five factors were maintained that would explain 60.3% of the total variance. Conclusion: It was seen that Turkish version of DSM-5 Level 1 Cross-Cutting Symptom Scale could be used as a valid and reliable tool both in clinical practice and for research purposes. © 2017, Cukurova University, Faculty of Medicine. All rights reserved.

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