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Koleksiyondaki öğeler
- MakaleYalnız künye2022ESSENTIAL OIL COMPOSITION OF ENDEMIC Hypericum ekerii FROM TURKEY AND CHEMOTAXONOMIC COMPARISONS
Yuce-Babacan, Ebru; Demirpolat, Azize
In our study, chemotaxonomic comparisons and essential oil composition of Hypericum ekeriNtice&Aytac (Hypericaceae) endemic to Turkey was studied for the first time. The composition of the essential oils of Hypericum ekerii was investigated and 45compounds were determined in total. GC and GC-MS analysis result showed a-pinene 18.73%, limonene 7.28%, caryophyllene oxide 6.71% and b-caryophyllene 6.47% as the majorcomponents. Based on the major chemical components, clusterinvestigated was applied for all the Hypericum species on Drosanthesection studied. With H. ekerii and all Drosanthesection species were grouped based on the presence of a specific compound and a dendrogram was created, and this section grouped the species into clusters. The chemical distribution of essential oil compounds in the genus pattern were discussed in means of natural products, major components and chemotaxonomy.
- MakaleYalnız künye2010Scopus SJRQ3Bioconversion Efficiencies of Lignocellulosic Soy Stalk by Pleurotus eryngii Strains
Yildirim, Numan; Yildiz, Abdunnasir
The bioconversion of soy stalk (SS) lignocellulose by three different starins of Pleurotus eryngii from various origins by solid state fermentation was studied during 40 days. The effect of rice bran ratio, 5% or 10% (w/w), on lignin degradation and laccase activity were measured througout the fermentations while, total crude protein and C/N ratio of the remaining substrate were determined at the end of the fermentations. The degradation of lignocellulose was found by the determination of acid soluble lignin (Klason lignin) content. All the strains degraded lignin with different extents. The amount of lignin degradation was decreased by the addition of the higher quantities of rice bran (SS+10% RB). The highest lignin degradation was obtained as 24.43% by P eryngii var. ferulae (E) and the highest protein level was found to be %13.32 by P eryngii (H). We determined that the laccase activity was generally decreased by the addition of the higher quantities of rice bran (10%). Maximum laccase activity (204.39 U/L) was obtained by P. eryngii (E) on SS + 5% RB at the end of the fermentation. This study showed that, after fungal treatment soy stalk can be used as a feed for ruminants with its higher feeding value.
AtıfWoS2OpenAlex1
İncele - MakaleYalnız künye2010Scopus SJRQ3The Milk Biochemical Parameters Having Economic Importance in Machine Milked Cows
Tekelioglu, O.; Cimen, M.; Bayril, T.
This research was aimed to investigate the effect of machine milking on milk biochemical components having economic importance. In the experiment, 10 Machine Milked (MM) and 10 suckled + Hand Milked (HM) cows were used. The milk fat rates were lower for MM animals in 1st, 2nd and 4th weeks (p<0.05). Protein and total solid rates of milks were similar for both groups during study. There was found positive correlation between milk fat and total solids (r = 0.53; p<0.05), but there were no significant correlations among other milk parameters. Suckling treatment (in BM group) to increase production of milk with maximum levels of milk fat is essential for achieving the economic benefits. Producers, who utilize the MM system during lactation should expect commercial milk to be low in fat content, which may affect cheese processing characteristics.
AtıfWoS6İncele - MakaleYalnız künye2011Scopus SJRQ1Uniform Big Bang-Chaotic Big Crunch optimization
Alatas, Bilal
This study proposes methods to improve the convergence of the novel optimization method, Big Bang-Big Crunch (BB-BC). Uniform population method has been used to generate uniformly distributed random points in the Big Bang phase. Chaos has been utilized to rapidly shrink those points to a single representative point via a center of mass in the Big Crunch phase. The proposed algorithm has been named as Uniform Big Bang-Chaotic Big Crunch (UBB-CBC). The performance of the UBB-CBC optimization algorithm demonstrates superiority over the BB-BC optimization for the benchmark functions. (C) 2010 Elsevier B.V. All rights reserved.
AtıfWoS48OpenAlex62İncele - MakaleAçık Erişim2013EFFECT OF EMBEDDED DELAMINATIONS ON IMPACT BEHAVIOR OF LAMINATED COMPOSITES
Sabanci, Eray; Karakuzu, Ramazan
In this study, the influence of size and location of embedded delamination on impact behavior of laminated composite was investigated, experimentally. The specimens were produced as for with and without delamination by vacuum assisted resin infusion molding method (VARIM). CEAST-Fractovis plus impact test machine was used in the experiments. As a result of the experiments, the location of delamination on the impact behavior was seen to be more effective than the size of delamination.
AtıfWoS3OpenAlex5İncele - MakaleAçık Erişim2023Norman Leader Robert Guiscard's Fight With Byzantine (Eastern Rome)
Korunur, Harun
The influence of the Migration of Tribes affected almost all of Europe. This influence has been an important factor in the formation of today's Europe. These tribes, which Rome described as barbarian, tried to find a place for themselves in Europe. The Vikings were one of these tribes, and they were active in both navigation and war skills. This tribe, which later took its place on the stage of history with its Norman identity, carried out a publishing and invasive policy. Over time, they gained dominance in Italy. One of the leaders who made for himself in this tribe was undoubtedly Robert Guiscard. This leader continued the expansionist policies after the Italian domination and attacked the Balkans under the control of Byzantium. He wanted to be the emperor by dominating Byzantium, and for this purpose he started a struggle whit Byzantium. The aim of our study is to evaluate the Byzamtine struggle with the Norman leader Robert Guiscard. In this direction, & imath;t aims to give a perspective on the relations in the Byzantine and Norman political history of the 9th century.
- MakaleYalnız künye2014Scopus SJRQ4DETERMINING DIFFERENT PLANT LEAVES' FRACTAL DIMENSIONS: A NEW APPROACH TO TAXONOMICAL STUDY OF PLANTS
Bayirli, Mehmet; Selvi, Selami; Cakilcioglu, Ugur
Fractal dimensions of leaves from Cercis canadensis L., Robinia pseudoacacia L., Amelanchier arborea (F. Michx.) Fernald, Prunus persica (L.) Batsch, Quercus alba L., Carpinus caroliniana Walter, Ficus carica L., Morus rubra L., Platanus orientalis L., and Ulmus rubra Muhl. were calculated. The values were then confirmed and compared by those obtained from box-counting method and the exponent values of density-density correlation function (first time in the literature). It is now proposed for the first time that there is a relationship between a fractal dimension of the leaf and a surface density of the image and was concluded that together with other measures, the fractal dimensions with surface density function could be used as a new approach to taxonomical study of plants.
AtıfWoS16İncele - BildiriAçık Erişim2018Risk Assessment with Failure Mode and Effects Analysis and Grey Relational Analysis Method in Plastic Injection Process
Ünlükal, Ceren; Senel, Mine; Senel, Bilgin
This study aims to evaluate the risks that may arise during the production process in a plastic injection manufacturing enterprise with traditional Failure Mode and Effect Analysis (FMEA) and Grey Relational Analysis (GRA). Although it is a widely used analytical technique that helps to identify and reduce the risks of failure in a process, the Failure Mode and Effects Analysis (FMEA) has some drawbacks that the different risks can have the same risk priority values and the weight of risk factors is not take into consideration. This situation has been tried to be eliminated by integrating the FMEA with the GRA. As a result, it is seen that the order of risk priority values of the identified failure changes according to both methods.
AtıfWoS5OpenAlex15İncele - MakaleAçık Erişim2023Determination of lipid quality and mercury levels of sardine and rainbow trout cooked with different methods
Çakli, Sukran; Erol, Nida Demirtas; Sen Yilmaz, Evren Burcu; Baldemir, Pinar; Çakli, Atilla
This study aimed to investigate the effects of baking and pan-frying methods on the lipid quality and mercury (Hg) levels of two important fish species in Turkiye, namely, fileted sardine (Sardina pilchardus) and rainbow trout (Oncorhynchus mykiss). The results revealed that sardines significantly decreased n-3 fatty acids depending on the cooking process, while the best n-6/n-3 ratio was observed in baked sardines, with higher rates found in pan-fried fish. Notably, pan-fried rainbow trout cooked with butter showed the highest atherogenic index (AI) of 0.71 +/- 0.32 and thrombogenic index (TI) of 0.61 +/- 1.43, as well as a hypocholesterolemic/hypercholesterolemic index (HH) of 0.79 +/- 0.17. Conversely, fried sardines exhibited lower atherogenic and thrombogenic scores, with fried sardines cooked in sunflower oil having a hypocholesterolemic/hypercholesterolemic index of 4.85 +/- 0.3. There were no significant variations in Hg content between raw and cooked fish. However, when compared to the raw control, the rise in Hg content for baked fish was substantial (p < 0.05) (baked rainbow trout 0.18 mg/kg and sardine 0.29 mg/kg). The decrease in FAs (Fatty Acids) due to cooking methods can be ordered as follows: Raw sardine > baked > fried. Conversely, the increase in FAs due to the cooking methods can be ordered as follows: fried > baked > raw sardine. Baked rainbow trout had much lower levels of palmitic acid, stearic acid, and myristic acid than the raw material. However, these levels were significantly increased in rainbow trout cooked in a frying pan. Additionally, oleic acid levels in fried rainbow trout were detected to be lower than in other preparations, whereas they were equivalent in baked rainbow trout.
AtıfWoS1OpenAlex2TR Dizin1
İncele - MakaleYalnız künye2012Scopus SJRQ2Ozone Disinfection of Eggs from Gilthead Seabream Sparus aurata, Sea Bass Dicentrarchus labrax, Red Porgy, and Common Dentex Dentex dentex
Can, Erkan; Karacalar, Ulviye; Saka, Sahin; Firat, Kursat
The risk of fish pathogen transmission via eggs can be reduced by disinfection in ozonated seawater. The aim of this study was to determine the suitable conditions for ozone disinfection of the eggs of gilthead seabream Sparus aurata, sea bass Dicentrarchus labrax, red porgy Pagrus pagrus, and common dentex Dentex dentex. The eggs were disinfected with a concentration (C) of 0.5 mg of ozone/L of water at four different exposure times (T = 2, 4, 8, and 16 min). The hatching rate was determined in triplicate for each treatment. Bacterial colonies were counted on tryptic soy agar and thiosulfate-citrate-bile salts-sucrose agar. At the end of the experiment, bacterial load and hatching rate were assessed together to determine the optimal ozone treatment values, which were estimated in CT units (i.e., C [= 0.5 mg/L] x T [min]). Optimal values were CT 2-4 (T = 4-8 min; 18 degrees C) for gilthead seabream and red porgy, CT 2 (T = 4 min; 18 degrees C) for common dentex, and CT 4 (T = 8 min; 15 degrees C) for sea bass.
AtıfWoS6OpenAlex8
İncele - MakaleYalnız künye2013Scopus SJRQ2Molecular characterisation of the genus Papaver section Oxytona using ISSR markers
Gürkök, Tugba; Kaymak, Elif; Boztepe, Gulsen; Koyuncu, Mesut; Parmaksiz, Iskender
Papaver bracteatum Lindl., P orientate L., and P. pseudo-orientale (Fedde) Medw., species of section Oxytona Bernh. in the genus Papaver L., are found widely in the native flora of Turkey. They are commercially important for their high alkaloid content. Because genus Papaver section Oxytona has similar morphological characters, it is not easy to distinguish these species. We used the inter-simple sequence repeat (ISSR) molecular marker system to determine the molecular characterisation of this section. In this study, 20 ISSR primers have been studied in 180 accessions collected from 5 different regions of Turkey. A total of 82 bands were obtained, of which 80 were polymorphic. Average genetic distance was found to be 0.35, the Shannon index was 0.50, and the polymorphism rate was 96.97%. The primer AT10 had the smallest number of bands, which was 3, while the primers AT19 and AT3 had the greatest number of bands, which was 5. In conclusion, the ISSR marker system can be used for the classification of section Oxytona.
AtıfWoS8OpenAlex12İncele - MakaleAçık Erişim2021Scopus SJRQ1The effect of the platelet-rich plasma and ozone therapy on tendon-to-bone healing in the rabbit rotator cuff repair model
Gurger, Murat; Once, Gokhan; Yilmaz, Erhan; Demir, Sukru; Calik, Ilknur; Say, Yakup; Kavakli, Ahmet; Key, Sefa; Gurbuz, Mustafa Umit; Bingollu, Onur
BackgroundThe aim of this study is to histologically and biomechanically investigate the effects of local PRP and ozone therapy (O2O3) on tendon-to-bone healing in a rabbit model of the supraspinatus tendon tear.MethodsFour groups were formed to have seven rabbits in each group: repair, R; repair + PRP, RP; repair + ozone, RO; and repair + PRP + ozone, RPO. The supraspinatus tendon was detached by sharp dissection from the footprint and an acute tear pattern was created. Thereafter, tendon repair was performed with the transosseous technique. In the RP group, PRP, and in the RPO group, PRP + O2O3 mixture was injected to the tendon repair site. In the RO group, O2O3 gas mixture was injected into subacromial space three times a week for a total of 4 weeks. The study was ended at postoperative 6th week.ResultsWhen compared with the R group, a statistically significant increase was observed in the biomechanical strength of the RP and RPO groups. The highest increase in biomechanical strength was detected in the RPO group. The histology of the RO and RPO groups showed better collagen fiber continuity and orientation than the R and RP groups.ConclusionsThe results obtained from this study show that the ozonized PRP can be used as biological support to increase tendon-to-bone healing. However, these results need to be supported by clinical studies.
AtıfWoS29OpenAlex35İncele - MakaleYalnız künye2013Scopus SJRQ3Effects of Intensive and Semi-Intensive Rearing on Growth, Survival, and V-Shaped (Lordotic) Skeletal Deformities in Juvenile Gilthead Sea Bream (Sparus aurata)
Can, Erkan
Intensive production can reduce production costs and improve efficiency of larvae culture. This study compared the effects of intensive and semi-intensive production on growth, survival, and V-shaped skeletal deformities in juvenile gilthead sea bream (Sparus aurata). At the end of the 50-day study, survival was 68.01 +/- 0.8%, mean weight was 1.32 +/- 0.03 g, and lordosis was 32% among juveniles raised in the intensive system. Survival and mean weight were significantly higher, 92.06 +/- 1.1% and 1.61 +/- 0.02 g, respectively, among juveniles raised in the semi-intensive system, and none had lordosis (p<0.05). Results suggest that semi-intensive systems are more advantageous than intensive for rearing sea bream juveniles.
AtıfWoS2İncele - MakaleYalnız künye2020ANALYSIS OF TURKISH BIRD NAMES IN THE TURKISH DICTIONARY IN TERMS OF ONOMASTICS
Korkut, Gizem
In this study; it is aimed to reveal the criteria used in bird naming in Turkish and to examine the methods used in creating concepts. The names of the birds in the Turkce Sozluk, which was published by the Turkish Language Association in 2019 as the eleventh edition, were determined and later, according to the naming methods; Bird names of Turkish origin were classified under eight headings according to their nutrition, physical characteristics, calling sound, behavior, color, habitat, resemblance to another animal, hunting and not depending on a reason. Identified bird names were examined both in appearance and aural. In the study, Turkish and non-Turkish-origin bird names were distinguished and Turkish-origin bird names were examined in the study. In order to reflect the bird vocabulary in the Turkce Sozluk fully, the bird names that are not of Turkish origin are also listed in the study. In the conclusion of the study; the most common naming methods used in bird naming, the most used naming methods in terms of syntax and the languages in which bird names are mostly used in terms of etymology were mentioned.
- MakaleAçık Erişim2018Morphometric Characteristics of the Glacial Cirques on Mount Dedegol
Çilgin, Zeynel; Bayrakdar, Cihan
This study investigates the morphometric characteristics of 30 glacial cirques developed on Mount Dedegol (2992 m) in the western Taurus mountain belt of southwestern Turkey. The elevation, slope, size, and shape characteristics of the cirques are analyzed and classifieded according to their developmental stages based on morphometric parameters. The development of cirques and their distinctive features are basically due to the pre-glacial topography, elevation, and aspect, and partly due to the local tectonic and geological structures. Nearly three-quarter of the cirques (73.3%) were developed in the N, NE, and NW aspects, which area less exposed to solar radiation. The average floor altitude of the cirques is 2543 m, and on the north-facing slopes, the cirques grew at lower elevations. From the morphometric measurements of the cirques, their mean length, width, and area are 600 m, 534 m, and 0.27 km(2) , respectively, revealing that the lengths of most cirques are slightly larger than the corresponding widths. The cirques have distinctive features regarding forms, as they exist as troughs or simple, staircase, or compound cirques, and they are located at the head or slopes of the glacial valleys, or on an area isolated from the valley. We assessed and classified the cirques according to their developmental stages. The assessment results show that there are 11 well-developed cirques in the mountain and the remaining 19 are either moderately or poorly developed. The evaluation also shows that at the onset of the glaciations, the appropriately located cirques developed into mature cirques because of the facilitative environment.
AtıfWoS4OpenAlex8İncele - MakaleYalnız künye2018Scopus SJRQ1The role of intraplate strike-slip faults in shaping the surrounding morphology: The Ovacik Fault (eastern Turkey) as a case study
Yazici, Muge; Zabci, Cengiz; Sançar, Taylan; Natalin, Boris A.
Although the westward extrusion of the Anatolian Block is mainly compensated along its boundary faults, the North Anatolian and the East Anatolian shear zones, it is internally deformed in a dominant manner by some strike-slip faults as well. To obtain a better understanding about this intraplate deformation of the Anatolian Block, we investigate the tectonic geomorphology of the Ovaak Fault (OF), which is the northeastern member of the Malatya-Ovaak Fault Zone (MOFZ). Further, we apply the most common geomorphic indices, such as the hypsometric curve and integral, longitudinal channel profiles, channel steepness and concavity, mountain front sinuosity, and valley height-width ratio to characterise and quantify the deformation along the OF and the surrounding region where the regional morphology is shaped with the joint effect of palaeo- and neotectonics and other morphological factors such as palaeoglacial processes. The highest hypsometric integral, steepness and concavity values are generally observed along the northeastern strand of the OF (the Munzur Mountains) and the Kemaliye Region. Further, we interpret that high HI and steepness values indicate a regional tectonic uplift because of either a change in fault geometry, which gives rise to the vertical component on the OF, or a regional high convergence zone. Furthermore, this study gives the first calculation of vertical uplift in the northern margin of the Ovacik Basin (OB) as at least 0.5 mm/y for long term deformation history. Thus, our results exhibit that the OF is one of the intraplate strike-slip faults of the Anatolian Block. (C) 2018 Elsevier B.V. All rights reserved.
AtıfWoS20OpenAlex22İncele - MakaleAçık Erişim2013Scopus SJRQ2Effect of mixed use of thyme and fennel oils on biochemical properties and electrolytes in rainbow trout as a response to Yersinia ruckeri infection
Gulec, Azime Kucukgul; Danabas, Durali; Ural, Mesut; Seker, Engin; Arslan, Ali; Serdar, Osman
The aim of study was to compare the effects of supplementation of food with herbal oils (Thymus vulgaris and Foeniculum vulgare) on biochemical properties and electrolytes of rainbow trout infected with Yersinia ruckeri. In total, 120 healthy fish (mean weight 84 +/- 1.02 g) were equally divided into four experimental groups. The experimental study was carried out for one week. The first group was control without supplementation and infection, the second group was infected and without oil supplementation, the third group was supplemented with oils (10 ml.100 g(-1) rates) for one week and infected with Y ruckeri and the last group was oil supplemented without infection. Results indicated that fish fed with dietary supplements showed enhanced bactericidal activity, total protein, albumin, cholesterol, triglyceride and bilirubin compared to the control (P < 0.05). As the value of herbal oils was increased in diets, the plasma glucose level decreased. The levels of K, Na, Ca, and Mg increased whereas Cl values decreased, compared to the control. It can be concluded that diet supplementation with herb oils used in this study can increase disease resistance by increasing levels of some biochemical parameters and electrolytes in rainbow trout to Y ruckeri infection.
AtıfWoS41OpenAlex52İncele - MakaleAçık Erişim2019Age and some growth parameters of Squalius cephalus (Linnaeus, 1758) inhabiting Karasu River (East Anatolia, Turkey)
Özcan, Ebru Ifakat; Serdar, Osman
The present study was carried out concerns a research of the age determination and some growth parameters of chub, Squalius cephalus (Linnaeus, 1758) living in 14 different station from Karasu River (East Anatolia, Turkey). For this purpose, a total of 196 fish specimen (100 females and 96 males) of S.cephalus were captured between 2014 and 2016 by electroshocker. Female/male ratio was 1/0.96. Minimum-maximum length and weight of captured fishes were determined as 7.6-23.9 cm and 4.8-198.2 g, respectively. The age groups were determined between 0 and 6. The parameters of von Bertalanffy growth function estimated as L-infinity=31.98 cm, k=0.136 year(-1), t(0)=-1.40 year for all individuals. The growth performance index (phi>) value was computed as 2.143. The length and weight relationships W=0.0060L(3.27) (R-2=0.98) for all individuals. Significant statistical differences in condition factors between age groups and sexes were not found (P > 0.05, t-test).
AtıfWoS1OpenAlex3TR Dizin5İncele - MakaleYalnız künye2024Scopus SJRQ3Biosynthesis of silver nanoparticles using the aqueous extract of Rheum ribes, characterization and the evaluation of its toxicity on HUVECs and Artemia salina
Unal, Ilkay; Egri, Sinan
This study describes an eco-friendly procedure to synthesize silver nanoparticles (AgNPs) using fresh and dried stem extract of Rheum ribes. AgNPs formation was confirmed using UV-vis spectrometry. The effects of parameters such as temperature, reaction time, pH, AgNO3 concentration, and plant extract/AgNO3 ratio on NP formation were evaluated. Morphology and structural features of the particles were characterized using SEM, TEM, XRD, and FTIR. The average size, polydispersity index, and zeta potential were determined using DLS. After characterization, among the two AgNP samples, selected one; AgNP sample synthesized by dried Rheum ribes stem extracts (d-AgNPs), which exhibited narrow size distribution and high surface plasmon resonance in the range of 435-445 nm for toxicity assessment. The cytotoxic effect of d-AgNPs on HUVECs cells was evaluated with MTT analysis. Accumulation measurements were made in three periods as 24, 48, and 72 h and elimination values were examined at +24 h using ICP-MS analysis
AtıfWoS6OpenAlex6İncele - MakaleYalnız künye2010Scopus SJRQ3EVALUATION OF THREE STRAINS OF Pleurotus eryngii ISOLATED FROM GEOGRAPHICALLY DIFFERENT REGIONS OF TURKEY FOR THEIR ABILITY TO DECOLORIZE METHYLENE BLUE AND CHRYSTAL VIOLET
Yildirim, Numan; Yildirim, Nuran Cikcikoglu; Yildiz, Abdunnasir
In this study, the ability to decolorize two chemically different synthetic dyes (methylene blue and crystal violet) by Pleurotus eryngii strains collected from geographically different regions of Turkey was evaluated on agar plates in static liquid cultures. For all strains, growth and decolorization halos were determined on malt extract agar plates containing 0.4 and 0.6 g/L of crystal violet (CV) or methylene blue (MB). Each P. eryngii strain showed certain decolorization capacities and was able to decolorize both MB and CV under static liquid culture conditions, but not to the same extent. The presence of the dyes in static liquid culture reduced the biomass production of all strains in comparison with control culture growing in the medium without dyes. In solid medium, a positive correlation was found between growth halo and decolorization halo.
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