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Koleksiyondaki öğeler
- MakaleYalnız künye2025Scopus SJRQ4The profile of fatty acids in the gametes of brook trout (Salvelinus fontinalis) ofduring the spawning period under culture conditions
Kocabas, Mehmet; Kutluyer-Kocabas, Filiz; Basçinar, Nadir; Özçiçek, Esin; Kirmizikaya-Özmen, Gorkem; Yilmaz, Okkes
The fertilization and subsequently embryo and larvae development are linked to gamete quality and FA (fatty acid) content is one of the specific factors affecting egg or sperm quality. Hence, FA profile of gametes (egg and sperm) was documented in brook trout (Salvelinus fontinalis) under cultivation. FAs were detected and measured using gas chromatography. These results indicated that a total of 26 and 22 FAs were determined in egg and sperm, respectively. The levels of PUFAs were determined in nearly identical quantities in both egg (47.57%) and sperm (47.53%). DHA (Docosahexaenoic acid), LA (Linoleic acid), EPA (Eicosapentaenoic acid) and ARA (Arachidonic acid) were predominant PUFAs for egg and sperm. Interestingly, vaccenic acid (C18:1 n-11) (24.07%) was major FAs in egg. In conclusion, the analysis of fatty acids in broodstock gametes contributes valuable insights into the dietary requirements necessary for effective aquaculture breeding programs.
- 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.
AtıfWoS4
İncele - MakaleYalnız künye2016Scopus SJRQ2Ethnopharmacological survey of medicinal plants in Ulukisla (Nigde-Turkey)
Paksoy, Mehmet Yavuz; Selvi, Selami; Sauran, Ahmet
This study aimed to identify wild plants collected for medicinal purposes by the local people of Ulukisla County, located in the Central Anatolia Region of Turkey and to establish the uses and local names of these plants. A field study was carried out over a period of approximately 2 years (2002-2003). During this period, 59 vascular plant specimens were collected. Demographic characteristics of participants, local plant names, plant parts used and preparation methods of the plants were investigated and recorded. Within the scope of the study, the plant species were collected; herbarium materials were prepared; and the plant specimens were named. In addition, the relative importance value of the species was determined and was calculated for the medicinal plants included in the study. A total of 59 medical plants belonging to 27 families were identified in the region. The most common families were Lamiaceae, Rosaceae, Asteraceae, Poaceae and Apiaceae. This study identified not only the wild plants collected for medical purposes by local people of Ulukisla County in the Central Anatolia Region, but also the uses and local names of these plants. Comparison of the data obtained in this study from the plants growing in Ulukisla with the experimental data obtained in previous laboratory studies showed mostly the same ethnobotanical usages. The plant flora of Ulukisla is threatened by such factors as grazing, expansion of new agricultural lands, and unsustainable picking of plants to generate income. Steps should be taken immediately to ensure the inclusion of relevant flora within conservation designations. Published by Elsevier GmbH.
AtıfWoS47OpenAlex59İncele - MakaleAçık Erişim2012Scopus SJRQ2Investigation of Yersinia ruckeri Infection in Rainbow Trout (Oncorhynchus mykiss Walbaum 1792) Farms by Polymerase Chain Reaction (PCR) and Bacteriological Culture
Seker, Engin; Karahan, Murat; Ispir, Unal; Çetinkaya, Burhan; Saglam, Naim; Sarieyyüpoglu, Mustafa
This study has been carried out to investigate the presence of Yersinia ruckeri, the causative agent of Enteric Red Mouth (ERM) disease, in rainbow trout fish breeding farms located in Elazig and Malatya provinces in Eastern Turkey. For this purpose, bacteriological culture and a specific polymerase chain reaction (PCR) have been compare with examine blood and intestine samples collected from adult and young rainbow trout fish as well as water samples collected from all the farms. Y. ruckeri was isolated and identified from eight of the 17 fish farms giving a proportion of 52.9% at fish farm. The disease was noted in five of the rainbow trout farms located in Elazig and three of the 11 rainbow trout farms located in Malatya. The agent was detected in five of the six young fish breeding farms. The isolation percentages of the causative agent at fish level were calculated as 25.7% (131/510) in adult and 31.7% (19/60) in young fish, giving an overall proportion of 26.3% (150/570). All the isolates have been successfully identified as Y ruckeri by species-specific PCR. No isolation could be made from water samples. It is therefore concluded that Y. ruckeri infection poses a significant threat to the fish farms in the study area and necessary precautions should urgently be taken in order to minimize economical losses due to ERM disease. A specific PCR can be utilized successfully in aquaculture for rapid identification of bacterial agents which will help to prevent spread of infectious diseases and will therefore contribute to the productivity of fishery sector.
AtıfWoS6OpenAlex7İncele - MakaleYalnız künye2022Scopus SJRQ4Some results on N (k)-contact metric manifolds
Altin, Mustafa; Yoldas, Halil Ibrahim; Ünal, Inan
In this study, some geometric properties of N(k)-contact metric manifolds, which are important class of contact manifolds, have been investigated by using a special connection (CY-connection). First, we give some fundamental results on N(k)-contact metric manifolds admitting CY-connection. Then, we obtain curvature properties of such manifolds. We prove that an N(k)-contact metric manifold admitting R* (xi, X).R* = 0 condition is an N (-1/4) metric manifold, where R* is the Riemannian curvature tensor of CY-connection. Also, we examine an N(k)-contact metric manifold admitting CY-connection under W* (xi, X).S* = 0 condition for generalized quasi-conformal curvature tensor W* of CY-connection. Finally, we consider a 3-dimensional N(k)-contact metric manifold admitting CY-connection.
- MakaleAçık Erişim2013Scopus SJRQ2Total phenolic contents and free-radical scavenging activities of grape (Vitis vinifera L.) and grape products
Keser, Serhat; Celik, Sait; Turkoglu, Semra
Grape is one of the world's largest fruit crops, with an approximate annual production of 58 million metric tons, and it is well known that the grape skins, seeds and stems, waste products generated during wine and grape juice processing, are rich sources of polyphenols. It contains flavonoids, phenolic acids and stilbenes. In this study, we tried to determine antioxidant properties and phenolic contents of grape and grape products (fresh fruit, seed, dried fruit, molasses, pestil, vinegar) of ethanol and water extracts. Antioxidant properties of extracts were investigated by DPPH center dot, ABTS(center dot+), superoxide, H2O2 scavenging, reducing power, metal chelating activity and determination of total phenolic contents. The seed extracts revealed highest ABTS(center dot+), DPPH center dot, H2O2 scavenging and reducing power activities. Furthermore, these extracts showed higher total phenolic contents than other grape product extracts.
AtıfWoS41OpenAlex45
İncele - MakaleYalnız künye2026Examining the Effect of Digital Sports Games on the Motivation Levels of Secondary School Students Regarding Participation in Sports Activities
Bozkurt, Eyup; Toker, Oguzhan; Aldim, Umit Ferit; Akgün, Tarik Fikret; Tümen, Tugba; Erdogan, Ramazan
The aim of this research is to examinethe effect of digital sports games on themotivation levels of secondary school students in participating in sports activities.The research was conducted using a correlational survey model, one of the quantitative research methods, and the researchgroup consisted of 141 volunteer students(80 male, 61 female) studying at the secondary school level in different provincesduring the 2024-2025 academic year. Apersonal information form and the DigitalSports Games Motivation Scale, developedby Kim and Ross (2006) and expanded byCianfrone et al. (2011), were used as datacollection tools. The SPSS software package was used for data analysis, and significance was accepted as p < 0.05. According to the research findings, it was determined that the students' motivation levels for digital sports games were generallyat a moderate level. The sub-dimensionswith the highest motivation were identified as team commitment, entertainment,and socialization. No statistically significant difference was found in digital sportsgame motivation levels according to gender, height, body weight, place of residence, income level, and parental educa-tion level variables (p > 0.05). Regarding the weekly digital game playing timevariable, a significant difference was foundonly in the entertainment sub-dimension;students who played digital sports gamesfor 5-8 hours a week had higher entertainment levels than the other groups (p <0.05). In conclusion, it can be said thatdigital sports games play a motivating rolefor secondary school students, especially inthe dimensions of entertainment and teamcommitment, but this effect is related togame time and the quality of interactionwith the game rather than demographicvariables. It is suggested that digital sportsgames should be considered not as an alter-native to physical sports activities, but as asupportive and complementary element tointerest in sports.
- MakaleYalnız künye2012Scopus SJRQ3Beneficial effects of oral administrations of grape seed extract on healing of surgically induced skin wounds in rabbits
Sagliyan, A.; Benzer, E.; Kandemir, F. M.; Gunay, C.; Han, M. C.; Ozkaraca, M.
This study examined the effects of orally given grape seed extract (GSE) on healing of surgically induced full thickness skin wounds in terms of clinical, histopathological and biochemical aspects. A total of 48 healthy. adult male New Zealand rabbits were randomly divided in 2 equal experimental and control groups: one week prior the surgery, 260 mg/kg grape seed extract was orally given for 20 days to the assay animals. A circular full thickness skin wound (2.5 cm in diameter) was made in the back midline of all rabbits under anaesthesia then, macroscopic and histopathological aspects as well as the tissue oxidant/antioxidant balance were determined on 6 rabbits from each group slaughtered at the 5th, 10th, 15th and 20th days post-surgery. In treated rabbits, it was clinically observed that the wound contraction was significantly amplified and the histological processes of re-epithelisation, granulation tissue development, collagen accumulation and angiogenesis were markedly hastened whereas the inflammatory reaction and the ulcer disappeared more rapidly than in the not-treated controls. Furthermore, the maximal skin MDA formation observed on the 10th day was significantly depressed and the antioxidant catalase (CAT) and glutathione peroxidase (GSH-Px) activities remained significantly elevated until the 15th day compared to the controls. These results demonstrate the beneficial effects of treatment with GSE on skin wound healing in rabbits.
AtıfWoS4İncele - MakaleYayıncıda açık erişim2016Scopus SJRQ2Steady, dynamic, creep/recovery, and textural properties of yoghurt/molasses blends: Temperature sweep tests and applicability of Cox-Merz rule
Eroglu, Ali; Bayrambas, Kadir; Eroglu, Zeynep; Toker, Omer S.; Yilmaz, Mustafa T.; Karaman, Safa; Dogan, Mahmut
In this study, physicochemical, rheological (steady, dynamic, and creep/recovery), and textural properties of yoghurt/molasses blends (0, 5, 10, and 15% molasses) were investigated. The blends showed shear thinning behavior, as described by Ostwald de Waele model (R-2 >= 0.955). Consistency coefficient value (K) of the blends decreased with increasing molasses concentration in the sample. Storage modulus (G') of blends was higher than loss modulus (G ''), exhibiting weak gel-like behavior. Molasses addition decreased G' and G '' values. Temperature sweep tests indicated that blends followed Arrhenius relationship. A modified Cox-Merz rule was applicable using shift factors. Compliance values (J(t)) increased as molasses concentration increased, revealing that deformation stability and internal viscosity (eta(1)) decreased with concentration. Creep behavior was characterized using Burger model. Obtained J data as a function of time could be satisfactorily fitted to Burger model (R-2 >= 0.994). The final percentage recovery of blends remarkably decreased with the increase of molasses concentration. Firmness, consistency, cohesiveness, and viscosity index values decreased with molasses addition. According to the results of the current study, molasses amount to be added to the yoghurt should be determined regarding rheological properties since resistance of the sample to deformation decreased with increase in molasses concentration.
AtıfWoS14OpenAlex21İncele - MakaleAçık Erişim2016Scopus SJRQ2New wave behaviors of the system of equations for the ion sound and Langmuir Waves
Baskonus, Haci Mehmet; Bulut, Hasan
This manuscript focuses on the new wave behaviors of the system of equations for the ion sound wave under the action of the ponderomotive force which results from a nonlinear force that a charged particle experiences in an inhomogeneous oscillating electromagnetic field due to high-frequency field. The sine-Gordon expansion method which is one of the powerful methods has been considered for finding traveling wave solutions of the system of equations for the ion sound wave under the pressure of the Langmuir wave. This algorithm yields new complex hyperbolic function solutions to the system considered in this paper. Wolfram Mathematica 9 has been successfully used throughout the paper for mathematical calculations.
AtıfWoS94OpenAlex99İncele - MakaleAçık Erişim2015Scopus SJRQ2Automatic classification of harmonic data using k-means and least square support vector machine
Eristi, Huseyin; Tümen, Vedat; Yildirim, Ozal; Eristi, Belkis; Demir, Yakup
In this paper, an effective classification approach to classify harmonic data has been proposed. In the proposed classifier approach, harmonic data obtained through a 3-phase system have been classified by using k-means and least square support vector machine (LS-SVM) models. In order to obtain class details regarding harmonic data, a k-means clustering algorithm has been applied to these data first. The training of the LS-SVM model has been realized with the class details obtained through the k-means algorithm. To increase the efficiency of the LS-SVM model, the regularization and kernel parameters of this model have been determined with a grid search method and the training phase has been realized. Backpropagation neural network and J48 decision tree classifiers have been applied to the same data and results have been obtained for the purpose of comparing the performance of the LS-SVM model. The real data obtained from the output of distribution system have been used to assess the performance of the proposed classifier system. The obtained results and comparisons suggest that the proposed classifier system approach is quite efficient at classifying harmonic data.
AtıfWoS1OpenAlex3İncele - BildiriAçık Erişim2017On Some Complex Aspects of the (2+1)-dimensional Broer-Kaup-Kupershmidt System
Bulut, Hasan; Isik, Hilal Arslanoglu; Sulaiman, Tukur Abdulkadir
The improved Bernoulli sub-equation function method is used in extracting some new exponential function solutions to the (2+1)-dimensional Broer-Kaup-Kupershmidt system. It is of vital effort to look for more solutions of the (2+1)-dimensional Broer-Kaup-Kupershmidt system, which are very helpful for coastal and civil engineers to apply the nonlinear water models in a harbor and coastal design. All the obtained solutions satisfied the (2+1)-dimensional Broer-Kaup-Kupershmidt system. The two-and three-dimensional shapes of all the obtained solutions in this paper are also presented. All the computations and the graphics plots in this study are carried out with the aid of the Wolfram Mathematica 9.
AtıfWoS29OpenAlex31İncele - MakaleAçık Erişim2018Assessment of metal concentrations and physicochemical parameters in the waters of Lake Tecer
Mutlu, Ekrem; Kutlu, Banu; Demir, Tugba; Yanik, Telat
Aim of the study: The objectives of this study are to observe the monthly and annual changes in water samples using physical-chemical methods in order to determine the water quality properties, to reveal pollution problems, to determine the suitability of water quality for aquatic life and to classify the quality of water in accordance with the Surface Water Quality Management Regulation's Inland Surface Water Classes criteria. Area of the study: Lake Tecer is located in the southeastern area of Sivas city and at the end of Brook Tecer, a branch of the Kizilirmak. The lake has a mean depth of 2.4 m and is fed by surface waters and snowmelt. Material and methods: The study period was from March 2011 to February 2012. Samples analysed for several chemical and physical parameters representing water quality were collected monthly over a period of 12 months. Main results: It was observed that the condition of the lake in terms of water quality is good. According to the Classification of the Intra-Continental Water Resources in the WPCR, the lake shows Class I, II and III water quality characteristics. Research highlights: In order to protect the water quality of this water source, to reduce further pollution and to sustain the natural ecological balance consisting of natural fish stocks and other aquatic animals, this lake should be monitored continuously.
AtıfWoS6OpenAlex11TR Dizin5
İncele - MakaleAçık Erişim2016Some novel exponential function structures to the Cahn-Allen equation
Bulut, Hasan; Atas, Sibel Sehriban; Baskonus, Haci Mehmet
In this manuscript, we consider the Bernoulli sub-equation function method for obtaining new exponential prototype structures to the Cahn-Allen mathematical model. We obtained new results using this technique. We plotted two- and three-dimensional surfaces of the results using Wolfram Mathematica 9. At the end of this manuscript, we submitted a conclusion in a comprehensive manner.
AtıfWoS34OpenAlex39İncele - MakaleAçık Erişim2019Public transportation graph: A graph theoretical model of public transportation network for efficient trip planning
Serin, Faruk; Mete, Suleyman
The presentation and usage of traditional graphs is very important for effective and fast solution of routing in public transportation. However, the traditional graph approach is unable to consider the passenger requests such as total travel time, minimum number of transfer and total distance of travel without pre-processing and/or post-processing. Moreover, the vehicles are not represented on traditional graph. In this paper, after analyzing the different kind of graphs, we propose a novel graph named as public transportation graph. The proposed graph models the public transportation system and considers distance, waiting time, travel time, self-transportation and number of transfers simultaneously for efficient trip planning. In this way, passenger requests can be met without pre-processing and post-processing. In addition, the vehicles are also considered and demonstrated in the proposed graph.
AtıfWoS1OpenAlex4TR Dizin1İncele - MakaleYalnız künye2013Scopus SJRQ3Effects of oral administrations of pomegranate seed extract on surgical wound healing in rabbits
Kandemir, F. M.; Sagliyan, A.; Ozkaraca, M.; Gunay, C.; Han, M. C.; Benzer, F.
This study examined the effects of orally given pomegranate seed extract (PSE) on healing of surgically induced full thickness skin wounds in terms of clinical, histopathological and biochemical aspects. A total of 48 healthy, adult male New Zealand rabbits were randomly divided in 2 equal experimental (PSE group) and control groups (C): one week prior the surgery, 100 mg/kg per day via gastric catheter pomegranate seed extract was orally given for 20 days to the assay animals. After one week, all rabitts were anaesthetized by intramuscular injection of xylazine HCl (5 mg/kg) and ketamine HCI (50 mg/kg) and after shaving and disinfection, a circular full thickness skin defect of 2.5 cm diameter was incised on the median line of the back area. Macroscopic and histopathological aspects as well as the tissue oxidant/antioxidant balance were determined on 6 rabbits from each group slaughtered at the 5th, 10th, 15th and 20th days post-surgery.
AtıfWoS9İncele - BildiriAçık Erişim2017Numerical simulations to the nonlinear model of interpersonal Relationships with time fractional derivative
Gencoglu, Muharrem Tuncay; Baskonus, Haci Mehmet; Bulut, Hasan
The main aim of this manuscript is to obtain numerical solutions for the nonlinear model of interpersonal relationships with time fractional derivative. The variational iteration method is theoretically implemented and numerically conducted only to yield the desired solutions. Numerical simulations of desired solutions are plotted by using Wolfram Mathematica 9.
AtıfWoS30OpenAlex47İncele - MakaleAçık Erişim2015Scopus SJRQ1Classification of Kashar Cheeses Based on Their Chemical, Color and Instrumental Textural Characteristics Using Principal Component and Hierarchical Cluster Analysis
Eroglu, Ali; Dogan, Mahmut; Toker, Omer Said; Yilmaz, Mustafa Tahsin
Principal component analysis and hierarchical cluster analysis were applied to investigate physicochemical and instrumental textural properties of fresh kashar cheese. Four different principal components sufficiently explained the variability in the cheese samples. In addition, hierarchical cluster analysis was performed to group the kashar cheese samples regarding physicochemical and instrumental textural properties. Instrumental textural properties indicated greater variability than chemical composition of cheese samples. Principal component analysis revealed that color parameters were positively correlated with textural and chemical parameters. The results of this study revealed that other parameters rather than chemical composition would be effective on the instrumental textural properties. It was proved that principal component analysis was a very effective statistical tool to determine quality of cheese samples. According to the principal component analysis and hierarchical cluster analysis results, the attributes defining the kashar cheese samples were determined to be primarily the texture profile analysis parameters.
AtıfWoS29OpenAlex35İncele - MakaleYalnız künye2015Scopus SJRQ3An investigation on antioxidant and antimicrobial activities of four Inula helenium L. taxa
Albayrak, S.; Cinar, A. E. Korkmaz; Paksoy, M. Y.; Aksoy, A.
The antioxidant activities of methanol (ME), ethanol (EE), water (WE) and ethyl acetate (EAE) extracts of four Inula helenium L. taxa (I. helenium ssp. orygalis (Boiss.) Grierson, I. helenium ssp. pseudohelenium Grierson, I. helenium ssp. turcarasemosa Grierson and I. helenium ssp. vanensis Grierson) were investigated. The phosphomolybdenum assay, beta-carotene linoleate bleaching and DPPH radical scavenging activity were used to evaluate the antioxidant capacity. The total phenolic contents determined by Folin-Ciocalteu assay of the extracts ranged from 4.18 to 102.91 mg gallic acid equivalents (GAE)/g dry extract. The extracts showed considerable effect on reducing the oxidation of beta-carotene. The highest radical scavenging activity was obtained for ME of I. helenium ssp. orygalis in DPPH assay. ME, EE and EAE of four Inula helenium taxa showed significant antibacterial activity against 13 bacteria tested. WEs had no inhibitory effect against bacteria tested except for I. helenium ssp. orygalis. EE of I. helenium ssp. orygalis was only effective against C. albicans.
AtıfWoS8İncele - MakaleAçık Erişim2015Scopus SJRQ1Analytical studies on the (1+1)-dimensional nonlinear Dispersive Modified Benjamin-Bona-Mahony equation defined by seismic sea waves
Baskonus, Haci Mehmet; Bulut, Hasan
In this study, we have studied to obtain some new analytical solutions to the (1+1)-dimensional nonlinear Dispersive Modified Benjamin-Bona-Mahony equation by using modified exp-function method. We have submitted the general structure of modified exp-function method. We have founded some new analytical solutions such as hyperbolic and rational function solutions. Afterward, we have plotted 2D and 3D surfaces of analytical solutions obtained in this study by using computer programming wolfram Mathematica 9.
AtıfWoS39OpenAlex44İncele
