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Full-Text Articles in Entire DC Network
Distribution Of Coronary Artery Risk Factors: A Regional Analysis, Mehmet Bostan, Ömer Şatiroğlu, Hüseyi̇n Avni̇ Uydu, Yüksel Çi̇çek, Aytun Çanga, Zaki̇r Karadağ, Ahmet Temi̇z, Yavuz Uğurlu, Mehtap Atak, Engi̇n Bozkurt
Distribution Of Coronary Artery Risk Factors: A Regional Analysis, Mehmet Bostan, Ömer Şatiroğlu, Hüseyi̇n Avni̇ Uydu, Yüksel Çi̇çek, Aytun Çanga, Zaki̇r Karadağ, Ahmet Temi̇z, Yavuz Uğurlu, Mehtap Atak, Engi̇n Bozkurt
Turkish Journal of Medical Sciences
To analyze the frequency and distribution of coronary artery risk factors in the city of Rize and its surrounding areas. Materials and methods: This observational study included 452 patients (333 men, 119 women). In addition to demographic characteristics of the patients, conventional risk factors were also recorded. The patients were grouped according to their ages, gender, and electrocardiographic characteristics. Results: The mean age of participants was 63 ± 13 years and 74% were male. Smoking and hypertension (HT) were seen more often (71%) in younger male patients. No difference among age groups was detected with regard to the occurrence of …
Analyzing Dependence Structure Of Thyroid Hormones: A Copula Approach, Burcu Üçer
Analyzing Dependence Structure Of Thyroid Hormones: A Copula Approach, Burcu Üçer
Turkish Journal of Medical Sciences
To model the level and structure of the dependence between thyroid hormones by using the copula approach. Materials and methods: Dependence models were constructed with the help of copula functions explaining the relationships between thyroid hormones for the data supplied by Dokuz Eylül University's Faculty of Medicine's endocrine laboratory. For this purpose, 684 patients aged 0-85 were examined. Results: Results indicated that none of the pairs of thyroid hormones exhibited a tail dependence structure; however, valid models exhibited a symmetric dependence structure. The findings implied that both the T3 and T4 levels had a significant dependence structure with TSH levels. …
Design And Ground Plane Optimization Of A Cpw-Fed Ultra-Wideband Antenna, Mohammed Al-Husseini, Ali Ramadan, Youssef Tawk, Ali El-Hajj, Karim Y. Kabalan
Design And Ground Plane Optimization Of A Cpw-Fed Ultra-Wideband Antenna, Mohammed Al-Husseini, Ali Ramadan, Youssef Tawk, Ali El-Hajj, Karim Y. Kabalan
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper, an ultra-wideband antenna based on an egg-shaped conductor and a co-planar waveguide (CPW) feed is presented. The ground plane incorporates an egg-shaped slot with parametrized center and dimensions. By resizing the slot and moving its center, a slotted or a partial ground can be obtained. Based on this configuration, a parametric study that aims at achieving the best ultra-wideband (UWB) response of the antenna is done. The study shows that an excellent UWB response is achieved for a certain ground slot size, beyond which the response starts to degrade. However, as the slot size tends to infinity, …
Application Of A Hybrid Evolutionary Technique For Efficiency Determination Of A Submersible Induction Motor, Mümtaz Mutluer, Osman Bi̇lgi̇n
Application Of A Hybrid Evolutionary Technique For Efficiency Determination Of A Submersible Induction Motor, Mümtaz Mutluer, Osman Bi̇lgi̇n
Turkish Journal of Electrical Engineering and Computer Sciences
Electric motors are the largest consumers of electricity in plants and induction motors constitute nearly two-thirds of them. The replacement of in-service induction motors with more efficient ones is a very important strategy for energy savings and consequently nearly 30 different methods have been used to determine the efficiency of induction motors in the last 2 decades. This paper aims to develop the efficiency determination of a 20 Hp submersible induction motor. Due to getting perfect efficiency of the submersible induction motor, a robust hybrid evolutionary optimization technique, which consists of a genetic algorithm and simulated annealing, is used. The …
An Algorithm To Minimize Within-Class Scatter And To Reduce Common Matrix Dimension For Image Recognition, Ümi̇t Çi̇ğdem Turhal, Alpaslan Duysak
An Algorithm To Minimize Within-Class Scatter And To Reduce Common Matrix Dimension For Image Recognition, Ümi̇t Çi̇ğdem Turhal, Alpaslan Duysak
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper, a new algorithm using 2DPCA and Gram-Schmidt Orthogonalization Procedure for recognition of face images is proposed. The algorithm consists of two parts. In the first part, a common feature matrix is obtained; and in the second part, the dimension of the common feature matrix is reduced. Resulting common feature matrix with reduced dimension is used for face recognition. Column and row covariance matrices are obtained by applying 2DPCA on the column and row vectors of images, respectively. The algorithm then applies eigenvalue-eigenvector decomposition to each of these two covariance matrices. Total scatter maximization is achieved taking the …
Design And Development Of Workstation For Microparts Manipulation And Assembly, Emrah Deni̇z Kunt, Ahmet Teoman Naskali̇, İslam Shoukry Mohammed Khalil, Asif Sabanovic, Ebubeki̇r Yüksel
Design And Development Of Workstation For Microparts Manipulation And Assembly, Emrah Deni̇z Kunt, Ahmet Teoman Naskali̇, İslam Shoukry Mohammed Khalil, Asif Sabanovic, Ebubeki̇r Yüksel
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper, microassembly system design issues are discussed with requirements, constraints and necessities for the development of an assembly platform, and these issues are shown over a versatile and reconfigurable microassembly workstation which is designed and realized as a research tool for investigation of the problems in microassembly and micromanipulation tasks. First prototype of a workstation and the development of a second prototype with enhancements on mechanical and control structure of the system are presented with details on the configuration of the systems. In addition, several experiments using a workstation are presented both on the first and the second …
Different Degrees Of Partial Melting Of The Enriched Mantle Source For Plio−Quaternary Basic Volcanism, Toprakkale (Osmaniye) Region, Southern Turkey, Utku Bağci, Musa Alpaslan, Robert Frei, Mehmet Ali̇ Kurt, Abi̇di̇n Temel
Different Degrees Of Partial Melting Of The Enriched Mantle Source For Plio−Quaternary Basic Volcanism, Toprakkale (Osmaniye) Region, Southern Turkey, Utku Bağci, Musa Alpaslan, Robert Frei, Mehmet Ali̇ Kurt, Abi̇di̇n Temel
Turkish Journal of Earth Sciences
The Toprakkale (Osmaniye) region, located in the Yumurtalık fault zone in southern Turkey, contains Quaternary volcanic rocks, shown by their mineralogical and petrographical features to be alkali basaltic and basanitic. These alkaline rocks are enriched in the large ion lithophile elements (LILE) Ba, Th and U, and show light rare earth element (LREE) enrichment relative to heavy rare earth element (HREE) on primitive mantle trace and rare earth element patterns that indicate different partial melting of the same source. The isotopic 87Sr/86Sr ratio is relatively low (0.703534-0.703575 for the alkali basalts and 0.703120-0.703130 for the basanites) and the 143Nd/144Nd ratio …
A New Species Of Angariid Gastropod From The Early Thanetian Of The Haymana-Polatlı Basin, Turkey, İzzet Hoşgör, Yavuz Okan
A New Species Of Angariid Gastropod From The Early Thanetian Of The Haymana-Polatlı Basin, Turkey, İzzet Hoşgör, Yavuz Okan
Turkish Journal of Earth Sciences
A new trochoidean species, Angaria calvii n. sp., from the early Thanetian of the Kırkkavak Formation (Haymana-Polatlı Basin, Palaeocene) in central Anatolia, is described and placed in the family Turbinidae. Previously, the oldest Cenozoic Angaria was recorded from the Early Palaeocene (Danian) in France (Paris Basin). In this paper, we report the second discovery of the oldest angariid specimens from the Thanetian sediments of the Tethys realm, a stratigraphic position which is supported by the foraminiferal-red alga assemblages at this locality.
New Data On The Dasycladales From The Lower Eocene Of Seyitgazi Region, Eskişehir, Central Turkey, Rajka Radoicic, Nazi̇re Erdem
New Data On The Dasycladales From The Lower Eocene Of Seyitgazi Region, Eskişehir, Central Turkey, Rajka Radoicic, Nazi̇re Erdem
Turkish Journal of Earth Sciences
An association of Dasycladalean algae is identified from the Lower Eocene (Ilerdian-Cuisian) of the Seyitgazi area, Western Anatolia. The association consists mostly of the genus Belzungia Morellet and Anatolia n. gen. This is the first discovery of such a rich and diversified dasycladalean flora with Belzungia in the Eocene of Central Tethys. The genus Belzungia is represented by four species: Belzungia terquemi Morellet, B. silvestrii (Pfender), B. bella (Ju Ying) Radoicic and B. pfenderae n. sp. Belzungia articles consist of whorls characterized by an assemblage of laterals, in the transversal section of which, the primary laterals are distally enlarged (sub-triangular …
Sphalerite Associated With Pyrrhotite-Chalcopyrite Ore Occurring In The Kotana Fe-Skarn Deposit (Giresun, Ne Turkey): Exsolution Or Replacement, Emi̇n Çi̇ftçi̇
Sphalerite Associated With Pyrrhotite-Chalcopyrite Ore Occurring In The Kotana Fe-Skarn Deposit (Giresun, Ne Turkey): Exsolution Or Replacement, Emi̇n Çi̇ftçi̇
Turkish Journal of Earth Sciences
The Kotana prospect is located about 30 km south of Giresun (NE Turkey). The ore mineralization is a Fe-skarn occurring within the low-grade pre-Lower Jurassic Pınarlar metamorphics, consisting of marble-phyllite intruded by the Upper Cretaceous-Eocene Aksu biotite monzogranite. The principal primary ore minerals include pyrrhotite and magnetite along with minor pyrite (I) and chalcopyrite, accompanied by trace sphalerite. Sphalerite is closely associated with chalcopyrite and to a lesser extent with hexagonal pyrrhotite. Secondary ore minerals include pyrite (II), marcasite, martite, hematite, goethite, lepidocrocite, and intermediate Fe-oxides-hydroxides. Gangue minerals are mainly calcite and quartz. Oxidation of the primary sulphides resulted in …
Geophysical Variations During The Total Solar Eclipse In 2006 In Turkey, Abdullah Ateş, Aydin Büyüksaraç, Özcan Bektaş
Geophysical Variations During The Total Solar Eclipse In 2006 In Turkey, Abdullah Ateş, Aydin Büyüksaraç, Özcan Bektaş
Turkish Journal of Earth Sciences
It has been observed that some geophysical parameters could be changed during a solar eclipse. We have therefore measured gravity and magnetic fields during solar eclipses. We also measured the gravity field during the previous eclipse on the 11^t^h of August, 1999. Gravity measurements on the 29^t^h of March, 2006 are compared with previous gravity measurements at the same location during the eclipse on the 11^t^h of August, 1999. Both showed the same behaviour during the eclipses. Gravity measurements showed fluctuations during both eclipses. A decrease in the intensity of the magnetic field was observed. Low-pass filtered magnetic data show …
The 6 September 2009 Mw5.4 Earthquake In Eastern Albania – Fyrom Border: Focal Mechanisms, Slip Model, Shakemap, Anastasia Kiratzi
The 6 September 2009 Mw5.4 Earthquake In Eastern Albania – Fyrom Border: Focal Mechanisms, Slip Model, Shakemap, Anastasia Kiratzi
Turkish Journal of Earth Sciences
On 6 September 2009 (GMT 21:49) a moderate Mw5.4 earthquake sequence burst at the eastern border of Albania with the Former Yugoslav Republic of Macedonia (FYROM). The main shock was located ~6 km north of the epicentre of the 30 November 1967 Mw6.2 Dibra (or Debar) earthquake, which caused loss of life and considerable damage to buildings. We use broad band waveforms recorded by the Hellenic Unified Seismic Network (HUSN), which receives real-time waveforms from the neighbouring networks, to compute focal mechanisms, obtain the slip model and derive the Shake Map of the mainshock. The focal mechanisms of 18 of …
Aflatoxin M1 Contamination In Cow’S Milk In Kayseri (Central Turkey), Hi̇kmet Mavuş Buldu, A. Nedret Koç, Güven Uraz
Aflatoxin M1 Contamination In Cow’S Milk In Kayseri (Central Turkey), Hi̇kmet Mavuş Buldu, A. Nedret Koç, Güven Uraz
Turkish Journal of Veterinary & Animal Sciences
The purpose of this study was to determine the levels of aflatoxin M1 (AFM1) in the milk of cows in the villages of Kayseri province, Turkey. Ninety milk samples were investigated for AFM1 contamination using the enzyme linked immunoassay (ELISA). The mean value of AFM1 levels was 59.9 ng/L, 95% confidence interval was 54.4-65.5 ng/L, and standard deviation was 26.6 ng/L. For 63 samples (70%) the values were significantly above the limit permitted by European Union criteria (EU) and the Turkish Food Codex (TFC) (P < 0.05). However, the differences in AFM1 levels between villages were not significant (P > 0.05). In conclusion, since the level of AFM1 in the milk of cows was higher …
Expression And Detection Of The Fmdv Vp1 Transgene And Expressed Structural Protein In Arabidopsis Thaliana, Li Pan, Yongguang Zhang, Yonglu Wang, Jianliang Lv, Peng Zhou, Zhongwang Zhang, Yuzhen Fang, Shoutian Jiang
Expression And Detection Of The Fmdv Vp1 Transgene And Expressed Structural Protein In Arabidopsis Thaliana, Li Pan, Yongguang Zhang, Yonglu Wang, Jianliang Lv, Peng Zhou, Zhongwang Zhang, Yuzhen Fang, Shoutian Jiang
Turkish Journal of Veterinary & Animal Sciences
To explore the feasibility of developing a new type of plantderived foot-and-mouth disease virus (FMDV) oral vaccine, the plant seed-specific expression vector p7SBin438/VP1 carrying the VP1 gene of the FMDV strain O/China/99 was constructed and transformed into Agrobacterium tumefaciens strain GV3101. This strain was used for transformation of Arabidopsis thaliana via the floral-dip method. The kanamycin-resistant transgenic plants were selected, and the VP1 gene and protein expressions were confirmed by PCR and sandwich-ELISA, respectively. The ELISA positive plants were further confirmed by Western blot assay, and the VP1 gene in the transgenic progeny was confirmed by PCR. The results showed …
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Seasonal Changes In Phytoplankton Community Structure In Relation To Physico-Chemical Factors In Bukan Dam Reservoir (Northwest Iran), Ali Mohsenpour Azari, Fereidun Mohebbi, Alireza Asem
Seasonal Changes In Phytoplankton Community Structure In Relation To Physico-Chemical Factors In Bukan Dam Reservoir (Northwest Iran), Ali Mohsenpour Azari, Fereidun Mohebbi, Alireza Asem
Turkish Journal of Botany
This study examines the relationship between phytoplankton population and some important physicochemical variables in the Bukan Dam Reservoir. The sampling was performed monthly from 8 sampling sites from April 2008 to February 2009. Phytoplankton counts were made by inverted microscope. Totally, 55 phytoplankton taxa were identified and included Chlorophyta, Bacillariophyta, Dinophyta, Cyanobacteria, Euglenophyta, Chrysophyta and Cryptophyta. Correlations between some important physicochemical factors and total phytoplankton number were calculated. Results indicated that phytoplankton total number positively correlated with NH_3 (R^2 = 0.845) and negatively correlated with Secchi disc depth (R^2 = -0.613).
Proteomic Changes During Boron Tolerance In Barley(Hordeum Vulgare) And The Role Of Vacuolar Proton-Translocating Atpase Subunit E, Ahmet Emi̇n Ati̇k, Gönensi̇n Ozan Bozdağ, Ersi̇n Akinci, Alaatti̇n Kaya, Ahmet Koç, Talat Yalçin, Hüseyi̇n Çağlar Karakaya
Proteomic Changes During Boron Tolerance In Barley(Hordeum Vulgare) And The Role Of Vacuolar Proton-Translocating Atpase Subunit E, Ahmet Emi̇n Ati̇k, Gönensi̇n Ozan Bozdağ, Ersi̇n Akinci, Alaatti̇n Kaya, Ahmet Koç, Talat Yalçin, Hüseyi̇n Çağlar Karakaya
Turkish Journal of Botany
Boron is an essential micronutrient for plants and animals; however, it can be toxic when present at high concentrations. The purpose of this study was to understand the mechanisms of boron tolerance in the Turkish barley (Hordeum vulgare) Anadolu cultivar. For this purpose, 2-dimensional electrophoresis (2-DE) was used to screen differentially expressed proteins for both control and boron-stressed Anadolu barley genotypes. Seven proteins were revealed by 2-DE: 1) ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCo large chain), 2) TLP5, a thaumatin-like protein, 3) PR5, a basic pathogenesis-related protein, 4) a RNase S-like protein, 5) a PSI type III chlorophyll a/b-binding protein, 6) a …
Estimating Global Solar Radiation From Common Meteorological Data In Aranjuez, Spain, Javier Almorox
Estimating Global Solar Radiation From Common Meteorological Data In Aranjuez, Spain, Javier Almorox
Turkish Journal of Physics
This study aimed to calibrate existing models and develop a new model for estimating global solar radiation data using commonly and available measured meteorological records such as precipitation or temperature. Fifteen empirical global radiation models based on meteorological variables were generated and validated using daily data in 2003-2008 at the Aranjuez station (Community of Madrid, Spain). Validation criteria included coefficient of determination, root mean square error, mean bias error, mean absolute bias error, mean percentage error, and mean absolute percentage error. The best result was derived from the model proposed, which uses extraterrestrial solar radiation, saturation vapor pressures, transformed rainfall …
Molecular Cloning, Characterization, And Homologous Expression Of An Endochitinase Gene From Bacillus Thuringiensis Serovar Morrisoni, Sezer Okay, Gülay Özcengi̇z
Molecular Cloning, Characterization, And Homologous Expression Of An Endochitinase Gene From Bacillus Thuringiensis Serovar Morrisoni, Sezer Okay, Gülay Özcengi̇z
Turkish Journal of Biology
The endochitinase gene (chi3023) of Bacillus thuringiensis (Bt) serovar morrisoni strain 3023 was amplified via polymerase chain reaction (PCR) and cloned in Escherichia coli. The ORF of chi3023 (GenBank Accession Number: DQ993175) consists of 2031 nucleotides encoding a 676-residue protein with a calculated molecular mass of 74.5 kDa and a pI value of 6.0. The amino acid sequence of Chi3023 was compared with previously sequenced Bt chitinases and the phylogenetic relationships among them were determined. The deduced N-terminal 34 amino acids of the premature Chi3023 exhibited a typical signal peptide. The E. coli-Bt shuttle vector pHT315 was used for homologous …
Characterization Of Lactococcin Bz Produced By Lactococcus Lactis Subsp. Lactis Bz Isolated From Boza, Di̇dem Şahi̇ngi̇l, Hi̇lal İşleroğlu, Zeli̇ha Yildirim, Mustafa Akçeli̇k, Meti̇n Yildirim
Characterization Of Lactococcin Bz Produced By Lactococcus Lactis Subsp. Lactis Bz Isolated From Boza, Di̇dem Şahi̇ngi̇l, Hi̇lal İşleroğlu, Zeli̇ha Yildirim, Mustafa Akçeli̇k, Meti̇n Yildirim
Turkish Journal of Biology
A bacterium isolated from boza produced in Turkey was identified, and the physico-chemical and microbiological properties of its inhibitory compound were characterized. The isolate was identified as Lactococcus lactis subsp. lactis, based on morphology, physiology, carbohydrate fermentation, the fatty acid profile, and 16S rDNA gene sequence homology. The antimicrobial compound produced by the microorganism, lactococcin BZ, was sensitive to papain, pepsin, trypsin, and \beta-mercaptoethanol, but was resistant to catalase, amylase, lipase, organic solvents (methanol, chloroform, etc.), detergents (SDS, urea, Tween-80, Triton X-100), and EDTA. Lactococcin BZ was active against several gram-positive and gram-negative foodborne pathogens and food spoilage bacteria. Lactococcin …
The Effects Of The Composition Of Growth Medium And Fermentation Conditions On The Production Of Lipase By R. Delemar, Ünsal Açikel, Mehtap Erşan, Yeşi̇m Sağ Açikel
The Effects Of The Composition Of Growth Medium And Fermentation Conditions On The Production Of Lipase By R. Delemar, Ünsal Açikel, Mehtap Erşan, Yeşi̇m Sağ Açikel
Turkish Journal of Biology
Lipases (triacylglycerol hydrolases) are hydrolytic enzymes that can catalyze the hydrolysis of the ester bond of long-chain acylglycerols at the oil-water interface. The present study investigated the effects of inducers, surface-active materials, activators, and inhibitors in the fermentation medium on lipase activity in Rhizopus delemar. In the presence of certain commercial oils and tributyrin as an inducer, lipase activity decreased in the order of sunflower oil > soybean oil > hazelnut oil > corn oil > tributyrin > olive oil. In addition, the effects of the stirring and aeration rates on lipase activity were investigated. To investigate the effect of surface-active materials on lipase activity …
Antioxidant Properties Of Different Extracts Of Black Mulberry (Morus Nigra L.), Türkan Kutlu, Gökhan Durmaz, Burhan Ateş, İsmet Yilmaz, M. Şevket Çeti̇n
Antioxidant Properties Of Different Extracts Of Black Mulberry (Morus Nigra L.), Türkan Kutlu, Gökhan Durmaz, Burhan Ateş, İsmet Yilmaz, M. Şevket Çeti̇n
Turkish Journal of Biology
In vitro antioxidant properties of 3 different extracts of black mulberry (Morus nigra L.) were investigated. Acidified methanol, acidified water, and non-acidified methanol/water solutions were used to prepare extracts. Different solvents caused different protonation on black mulberry anthocyanin structures, which were predicted according to their UV-VIS spectrum. Extracts indicated 2 main peaks at about ~280 and ~520 nm with different peak areas in their UV-VIS spectrum. The rank of extracts' total phenolic content and reducing power values were both found to be in correlation with their absorbance at ~280 nm. Meanwhile the same relationship was observed between DPPH scavenging activity …