Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Kurt, Kemal(9)
- Yilmaz, Ozgur(7)
- Doğan, Kadir Caner(6)
- Alemdag, Selcuk(5)
- Demir, Selim(5)
- Güngör, Nihan(5)
- Turan, İbrahim(5)
- Vural, Alaaddin(5)
- Ünker, F.(5)
- Akpinar, Adem Sefa(4)
- Akyüz, Ahmet Mutlu(4)
- Doğan, Orhan Veli(4)
- Doğan, Süheyla(4)
- Gurocak, Zulfu(4)
- Maden, Nafiz(4)
- Menteşe, Ümit(4)
- Okan, Tarhan(4)
- Saridogan, E(4)
- Sener, S(4)
- Staub, S(4)
- Çalışır, Gülsüm(4)
- Çuvalci, O.(4)
- Adanur, Süleyman(3)
- Akaryali, Enver(3)
- Artan, Seyfettin(3)
- Ashyralyyev, Charyyar(3)
- Aydin, Musa(3)
- Baskent, Emin Zeki(3)
- Bayraktar, Alemdar(3)
- Bingöl, Ozkan(3)
- Bostan, Sedat(3)
- Ceylan, D.(3)
- Damlıbağ, Fatih(3)
- Dincel, Gungor Cagdas(3)
- Duran, Celal(3)
- Günaydin, Murat(3)
- Hayaloğlu, Pınar(3)
- Kalkışım, Özgün(3)
- Ozdes, Duygu(3)
- Saylan, Kemal(3)
Yayınlar
- MakaleYalnız künye2015Organic maturity and hydrocarbon potential of liassic coals from the eastern Pontides, NE Turkey
Eker, C.S.; Sipahi, F.; Akpnar, I.
Organic matter content, type of organic material, and thermal maturity of Lias-aged coals of the Gumushane and Bayburt areas were investigated. The total organic carbon contents of coals in the Gumushane area range from 0.39-35.46 wt%, and in the Bayburt area range from 0.02-50.64 wt%. The Gumushane (except Güvercinlik field) and Bayburt areas coals have low hydrogen index values. The coal samples contain a mixture of Type II and Type III kerogens. Based on average Tmax values Liassic coals in the Gumushane and Bayburt (except Cerci field) areas are mature, and potential yields are low.
- BildiriYalnız künye2015Well-posedness of a fourth order of accuracy difference scheme for the Neumann type overdetermined elliptic problem
Ashyralyyev, Charyyar; Lukashov, A.; Ashyralyev, A.; Malkowsky, E.; Basar, F.
In the present paper, inverse elliptic problem with Neumann type overdetermination is discussed. A fourth order of accuracy difference scheme for the solution of this identification problem is presented. Stability, almost coercive stability and coercive inequalities for the solution of difference problem are obtained. In application, a fourth order approximation of the inverse problem for multidimensional elliptic equation with Neumann type overdetermination and Dirichlet boundary condition is studied.
- MakaleYalnız künye2015Building-up a code for the purpose of TRUE coincidence summing correction in gamma-ray spectrometry with EGS4
Celik, Necati; Altin, Duygu; Cevik, Ugur
In the presented study, a code was created for the purpose of true coincidence summing (TCS) correction factors for 134Cs. The created code was implemented in EGS4 Monte Carlo simulation package. TCS factors were determined for nine different energies for different detector-source geometries. The calculated results were successfully validated by an empirical method using a point 134Cs radioactive source and a p-type HPGe detector having 55% relative efficiency. Although the code created gives TCS factors only for 134Cs, the technique presented can be used to obtain the factors for any radionuclide used in gamma-ray spectrometry.
- MakaleAçık Erişim2015Analysis of Tribo-corrosion Properties of MAO/DLC Coatings Using a Duplex Process on Ti6Al4V Alloys
Sukuroglu, Ebru Emine; Totik, Yasar; Arslan, Ersin; Efeoglu, Ihsan
In recent years, various technologies have been increasingly investigated for the surface modification of Ti and Ti alloys. Microarc oxidation (MAO) is one of the effective techniques to improve surface properties. However, it has some disadvantages for sliding wear applications and/or aggressive environments. In this study, the combined MAO and closed field unbalanced magnetron sputtering process was used to deposit duplex MAO/diamond-like carbon (DLC) coatings on Ti6Al4V alloy. Analysis of the microstructures, morphology, and crystallographic structure were performed by using a SEM, Raman, and XRD. The wear, corrosion, and tribo-corrosion properties of the coatings were investigated using the pin-on-disk wear test, potentiodynamic polarization test, and combining tribo-corrosion test unit, respectively. The results of this study have shown that duplex MAO/DLC coatings exhibit better wear, corrosion, and tribo-corrosion properties than the DLC or MAO monolayer on Ti6Al4V alloy substrate. MAO/DLC coatings exhibited dense structure, lower coefficient of friction and corrosion current density, and higher tribo-corrosion resistance. The results have also shown that MAO/DLC duplex coatings on Ti6Al4V substrates increased the tribo-corrosion resistance by acting as a barrier layer.
- MakaleYalnız künye2015Evaluation of cadastre renovation studies in Turkey
Döner, F.
In Turkey, cadastral surveys have been carried out by various measurement techniques, at different standards and based on different legislation. Consequently, one of the most important problems with the cadastre is that approximately half of the current cadastral maps are insufficient to meet the expectations of today’s modern cadastre. In order to resolve the problem and renew the cadastral maps, the General Directorate of Land Registry and Cadastre commenced the Land Registry and Cadastre Modernization Project in 2009. Within the scope of the project, it is intended that 10 million parcels will be renewed by the end of 2014. This study aims to evaluate the cadastre renovation studies in Turkey with respect to their legal and technical aspects using a case study area. Results show that cadastre renovation studies may be insufficient to enrich and update the cadastral data. As a solution, legal amendments should be made in the Cadastre Law in a manner that will allow a new cadastral survey to be performed.
- MakaleYalnız künye2015Effect of applications of organic solid cattle manure on Hungarian vetch and barley intercropping mixtures grown on soils of different depths
Yolcu, H.
Sloping fields on soils of shallow depth to tillage are commonly left uncultivated in many parts of the world. This study was conducted to compare the effects on morphological traits, dry-matter (DM) yield, legume ratio (LR), crude protein content (CP), crude protein yield (CP yield) and mineral concentrations (N, P, K, S, Ca, Cu, Fe, Mg, Mn, Na, B and Zn) of Hungarian vetch (Vicia pannonica Crantz.) and barley (Hordeum vulgare L.) grown in intercropping mixtures in response to three rates of organic solid cattle manure application (M0: 0, M1: 10, M2: 20 t ha-1). Experimentation was conducted on soils of two different soil depths [shallow (8-12 cm; low-medium erosion risk) and normal soil depth (18-22 cm; no erosion risk)] on a sloping field in the 2006-2007 and 2007-2008 growing seasons at Gumushane, Turkey. Herbage harvested on the shallow depth area had 22-73% less DM yield, 14-72% less CP yield, 6-9% greater CP content and generally higher minerals contents than herbage from the normal soil depth area. Cattle manure applications increased DM yield by about 23%, increased CP content and CP yield, and also increased the contents of most minerals in herbage of the intercropping mixtures, relative to the control, averaged over the two soil depths. It is suggested that, for areas with shallow soil depths that are prone to erosion, plant cover should be used for forage production, and that fertilization with solid cattle manure at 20 t ha-1 can support production of quality forage of acceptable DM yield.
- MakaleYalnız künye2015Assessment of metal pollution associated with an alteration area: Old Gümüşhane, NE Black Sea
Vural, Alaaddin
The objective of this study was to determine the potential environmental risks associated with the Kirkpavli (Old Gümüşhane in northern Turkey) alteration area by quantifying pollution in soil. The Kirkpavli (Old Gümüşhane) alteration area is situated at the south of the deposit with the same name of gold-silver-bearing lead, zinc, and copper in the southern part of the Black Sea Tectonic Unit (Eastern Pontides). In this study, 28 soil samples acquired from the alteration area were analyzed for contents of some main elements including lead (Pb), copper (Cu), zinc (Zn), cadmium (Cd), cobalt (Co), manganese (Mn), nickel (Ni), and arsenic (As). Contents of the elements in the area were determined, and high values were obtained such as 1,171 mg/kg for As, 12.4 mg/kg for Cd, 77.3 mg/kg for Co, 341 mg/kg for Cu, 1,172 mg/kg for Mn, 51.9 mg/kg for Ni, 3,725 mg/kg for Pb, and 880 mg/kg for Zn. Soil contamination was appraised on the basis of Geoaccumulation Index (Igeo), Enrichment Factor (EF), Pollution Index, and Integrated Pollution Index. The calculated results of Igeo, EF, and PI of the elements can be shown in descending order of parameters as As > Pb > Cd > Zn > Cu > Co > Mn. The parameters for some of these elements indicated extremely high contamination (Igeo > 5), extremely high enrichment (EF > 40), and high pollution (PI > 3). High Igeo, EF, and PI values of As, Pb, and Cd in the soil samples mean that soil pollution is typically associated with alteration area. Considering its location and the results of this study, the Kirkpavli alteration area is a significant source of pollution and may have ecotoxicological effects on terrestrial, groundwater, and aquatic ecosystems in the region.
- MakaleAçık Erişim2015Effects of Turkish propolis on expression of hOGG-1 and NEIL-1
Turan, İbrahim; Değer, Orhan; Aliyazicioğlu, Yüksel; Demir, Selim; Kilinç, Kağan; Sümer, Ayşegül
Background/aim: Propolis is a bee product with antioxidative, antimutagenic, and other beneficial properties, and it is used as a natural drug. It is rich in polyphenolic compounds. Its composition varies depending on the particular geographical region. Oxidative stress is caused by an imbalanced free radical production and antioxidant system. The effects of flavonoids on the expression of DNA repair enzymes have been examined previously; however, no study has investigated the effects of propolis. This study investigated the effects of ethanolic extracts of Turkish propolis (EEP) on the expression of DNA repair enzymes. Materials and methods: The effects of EEP and tertiary-butyl-hydroperoxide (t-BHP) on cell viability were determined using MTT. DNA damage was determined using comet assay. mRNA expression of target enzymes was detected using RT-PCR. Results: According to the cytotoxicity analysis, after a recovery time of 4 h, appropriate damage agent t-BHP and optimum EEP concentrations were 300 µM and 200 µg/mL, respectively. 8-Oxoguanine-glycosylase (hOGG-1) and endonuclease-VIII-like-1 (NEIL-1) expressions increased in the positive control group (t-BHP alone) and the study group (t-BHP+EEP). Maximum increase in NEIL-1 expression was at hour 12 in the positive control group and at hour 8 in the study group. Conclusion: EEP can be considered as a potential source of functional food and pharmaceutical agents.
- MakaleYalnız künye2015CFRP composite retrofitting effect on the dynamic characteristics of arch dams
Altunişik, Ahmet Can; Günaydin, Murat; Sevim, Bariş; Bayraktar, Alemdar; Adanur, Süleyman
The purpose of this study is to investigate the effect of retrofitting dynamic characteristics of a damaged laboratory arch dam model, subsequently repaired with high-strength structural mortar and strengthened with composite carbon fiber reinforced polymer. This study constructed in laboratory conditions is a prototype arch dam-reservoir-foundation model. Five test cases of ambient vibration on the arch dam model illustrate the changes in dynamic characteristics: natural frequency, mode shape, and damping ratio, before and after retrofitting. The ambient vibration tests collected data from the dam body during vibrations by natural excitations which provided small impacts and response signals from sensitivity accelerometers placed at crest points. Enhanced Frequency Domain Decomposition Method in the frequency domain extracts the experimental dynamic characteristics. At the end of the study, experimentally identified dynamic characteristics obtained from all test cases have been compared with each other. Apparently, after the retrofitting, the natural frequencies of the dam body increased considerably, demonstrating that the retrofitting, including repairing and strengthening is very effective on the flashback of initial dynamic characteristics.
- MakaleYalnız künye2015Effectiveness of levamisole and tarantula cubensis extract in the treatment of teat Papillomatosis of cows
Paksoy, Zahid; Gülesci, Nuri; Kandemir, Fatih Mehmet; Dinçel, Güngör Çagdas
Papillomatosis is widespread in cattle and is often observed on the skin of udders. For treatment, anthelmintic, immunomodulator and homeopathic drugs are administered. The objective of the study was to examine the therapeutic effect of levamisole and tarantula cubensis extract in the treatment of papilloma observed in the teats of cows. Sixteen Holstein cows between the age of 2-3 years were used as study material. The cows with Papillomatosis were randomly assigned into two equal groups. The animals in the first group (n=8) were treated with intramuscular double doses of levamisole (5 mg/kg) applied one week apart. The second group of animals (n=8) was treated with two subcutaneous doses of 10 ml of Tarantula cubensis extract one week apart. Four animals in the first group recovered while 8 animals in the second group recovered. The total serum oxidant levels of the animals treated with Tarantula cubensis extract and levamisole on the 15th day was found to be significantly lower than the serum levels of same animals on day 0 of the treatment (P<0.05). The results of this study revealed that tarantula cubensis extract applied in normal therapeutic doses was more effective in the treatment of teat papillomatosis than levamisole.
- MakaleAçık Erişim2015Controlling spatial forest structure with spatial simulation in forest management planning: A case study from Turkey
Kadiogullari, Ali Ihsan; Baskent, Emin Zeki; Keles, Sedat; Bingöl, Özkan
Decision Support Systems (DSS) is widely used to develop spatially explicit forest management plans through the integration of spatial parameters. As a part of this study, a simulation-based spatial DSS, the ETÇAPSimülasyon program was developed and tested in a case study area. The system has the capability to control the spatial structure of forests based on a geodatabase. Geographical Information Systems (GIS) was used to generate the database, using spatial parameters including opening size, block size and green-up delay in addition to other attribute data such as the empirical yield table and the product assortment table. Based on the simulation technique, a spatial forest management model was developed to link strategic planning with tactical planning on a stand base and to present results with a number of performance indicators. One important component of the model determined all spatial characteristics with spatial parameters and patch descriptions. A stand growth and yield simulation model (BARSM) based on the relationship between current and optimal basal area development was also generated to project future stand characteristics and analyze the effects of various silvicultural treatments. A number of spatial forest management strategies were developed to generate spatially implementable harvest schedules and perform spatial analyses. The forest management concept was enhanced by employing a spatial simulation technique to help analyzing the ecosystem structure. Spatial characteristics for an on- The-ground forest management plan were then developed. The model was tested in Altinoluk Planning Unit (APU) using a spatial simulation technique based on various spatial parameters. The results indicated that the spatial model was able to satisfy the spatial restriction requirements of the forest management plan.
- MakaleYalnız künye2015Antifungal effect of Origanum onites essential oil as an alternative to formalin in the artificial incubation of narrow-clawed crayfish (Astacus leptodactylus Eschscholtz, 1823)
Koca, Seval Bahadir; Cevikbas, Mustafa
As alternative to formalin, the antifungal effect of a plant product [Origanum onites L. (Lamiaceae) oil] was investigated for use in the artificial incubation of narrow-clawed crayfish (Astacus leptodactylus Eschscholtz) eggs. For this purpose, this study was conducted as two experiments. In experiment I, the eggs were artificially incubated for 40 days. In experiment II, juveniles were cultured to determine effects of O. onites oil on juveniles for 30 days. The experimental groups were as follows: formalin (3500 ppm for 15 min), O. onites oil (300 ppm for 15 min, 700 ppm for 2 min and 1000 ppm as a dip treatment 15 split-second) and a control (no treatment). In the experiment I, the highest hatching rate (86%) and survival rate of stage II juveniles (80%) were observed in 1000 ppm dip group. These results were similar to that of formalin group (85% and 79%) respectively. The control group exhibited the lowest hatching rate (49%) and stage II rate (42%) compared with the 1000 ppm dip group and 3500 ppm formalin treatments. However, other concentrations (300 and 700 ppm) of O. onites showed toxic effects on the eggs and there was no hatching. In the experiment II, the survival rate and growth performance of the crayfish juveniles were similar in all groups. This study indicated that the 1000 ppm O. onites dip treatment could be a good alternative to formalin for improved egg hatchability in the artificial incubation of crayfish eggs.
- MakaleYalnız künye2015Reliabilities of distances describing bolt placement for high strength steel connections
Ztekin, Ertekin Ö.
In the bolted connections, bolt placements are generally described and are generally made in the direction of design effects and in the perpendicular direction to design effects. In these both directions, the reliability of the distance of bolts to the edges of connection plate and the distance of bolts to each other is investigated for high strength steel connections built up with high strength bolts in this study. For this purpose, simple SL (bearing type shear connection) and SLP (bearing type shear connection for body-fit bolts) type steel connections with St 52 grade steel plates with 8 different thicknesses and with 8.8D grade high strength bolts (HV) were constituted and analyzed under H (Dead Loads+Live Loads+Snow Loads+ Roof Loads) and HZ (H Loads+Wind Loads+Earthquake Loads) loadings. Geometric properties, material properties and design actions were taken as random variables. Monte Carlo Simulation method was used to compute failure risk and the first order second moment method was used to determine the reliability indexes of those different distances describing the placement of bolts. Results obtained from computations have been presented in graphics and in a Table. Then, they were compared with some values proposed by some structural codes. Finally, new equations were constituted for minimum and maximum values of distances describing bolt placement by regression analyses performed on those results.
- MakaleYalnız künye2015Genetic characterization of the Akkaraman, Morkaraman and Karayaka sheep through microsatellite variation
Das, Huseyin; Turan, Ibrahim; Demir, Selim
Genotypes have to be controlled periodically and necessary precautions should be taken in order to ensure that animal biodiversity is not lost. In this study, the genotypes of the Akkaraman, Karayaka and Morkaraman species from among Turkey’s local sheep were examined at 7 different microsatellite loci. The average allele counts are close to each other and were determined as 8,905±0,483. Whereas the PIC values ranged from between 0,507-0,794 at an average of 0,705. The He and Ho values used to calculate genetic diversity were determined on average as 0,734±0,023 and 0,509±0,038 respectively. According to the Fisher-Exact test result, the populations are not in HWE (P<0.001). Whereas the FIS values that show inter- population genetic diversity were determined as 0,353±0,092 (KRY), 0,328±0,095 (MRK) and 0,237±0,059 (AKK) respectively. In addition, Population Assignment and Principal Coordinate Analysis graphs were formed. When the pairwise FST and Nm, NeiuD,SHUA and G Statistics values used to calculate the genetic similarities and differences are examined, it is observed that the closest relations in terms of genetics is among AKK-KRY followed respectively by AKK-MRK and KRY-MRK.
- MakaleAçık Erişim2015Chemical composition of oleoresin and larvae gallery resin of pinus brutia attacked by dioryctria sylvestrella ratz; [Kemijski sastav oleorezina i smole galerije ličinki sa stabla bora (pinus brutia) napadnutoga insektima dioryctria sylvestrella ratz]
Öz, Mehmet; Deniz, İlhan; Okan, Onur Tolga; Said Fidan, M.
Dioryctria sylvestrella Ratz. poses a remarkable hazard for the Pinus brutia Ten. in Turkey. In the current study, the larvae gallery resin of five trees and essential oils of resin, which was obtained with the AcidPaste Method, were analyzed using the Gas Chromatography and Mass Spectrometry (GC-MS) Method. Thirty nine compounds were found in larvae gallery resin, which were produced by Dioryctria sylvestrella Ratz, while thirty six compounds were extracted from oleoresin obtained by the Acid-Paste Method. The most common compounds of larvae gallery resin were α-pinene at a rate of 20.2%, β-caryophyllen at a rate of 10.8%, γ-terpinene at a rate of 10.1% and β-pinene at a rate of 9.4 percent. The most common compounds of oleoresin were α-pinene at a rate of 19.7%, β-pinene at a rate of 13.3%, γ-terpinene at a rate of 10.2% and β-caryophyllen at a rate of 7.8 percent. Also, the quantities of some compounds within larvae gallery resin such as β-pinene, limonene, and sylvestrene decreased compared to those of oleoresin, while the quantities of some compounds in oleoresin including α-longipinene, α-terpineol, and longifolene increased compared to that of larvae gallery resin. However, no qualitative difference was found.
- MakaleAçık Erişim2015Investigate the effects of non-genetic factors on calving difficulty and stillbirth rate in holstein friesian cattle using the CHAID analysis; [Genetiksel Olmayan Faktörlerin Siyah Alaca Sığırlarda Güç ve Ölü Doğuma Etkilerinin CHAID Analizi İle İncelenmesi]
Bayram, Bahri; Topal, Mehmet; Aksakal, Vecihi; Önk, Kadir
A total number of 947 calving records from 613 Holstein Friesian cows raised at a private dairy farm in Kelkit, Turkey, from 2004 to 2006 were used to study the effect of non-genetic factors on calving difficulty and stillbirth rate using CHAID algorithm. The mean calf birth weight was 41.0±0.19 kg. The overall incidence of calving difficulty and stillbirths in the Holstein Friesian herd were 9.1% and 9.4%, respectively. Calf birth weight, birth type and calving season had the greatest impact on calving difficulty. The increase in calf birth weight was associated with a significant increase in calving difficulties (P<0.01). The calving difficulty risk in twins (18.9%) was higher than in singleton calves (5.0%). The main environmental variables affecting the stillbirth rate were parity number, calf birth weight, sex of calf, calving season and calving difficulty. Parity number was statistically the most relevant factor affecting the stillbirth rate, which was also higher in primiparous (18.7%) than in multiparous cows (5.4%). As the calf birth weight increased, a significant increase was also in the stillbirth rate (P<0.01). The stillbirth rate in winter (19.7%) was higher than in other seasons (3.6%) (P<0.01). Calving assistance was associated with an increased risk of stillbirth (P<0.05). As a result, calf birth weight, birth type and calving season had the greatest impact variables on calving difficulty, however, parity, calf birth weight, sex, calving season and calving difficulty were the most effective variables on stillbirth in Holstein Friesian Cattle.
- MakaleAçık Erişim2015Static and dynamic responses of Halgavor footbridge using steel and FRP materials
Gunaydin, M.; Adanur, S.; Altunisik, A.C.; Sevim, B.
In recent years, the use of fiber reinforced polymer composites has increased because of their unique features. They have been used widely in the aircraft and space industries, medical and sporting goods and automotive industries. Thanks to their beneficial and various advantages over traditional materials such as high strength, high rigidity, low weight, corrosion resistance, low maintenance cost, aesthetic appearance and easy demountable or moveable construction. In this paper, it is aimed to determine and compare the geometrically nonlinear static and dynamic analysis results of footbridges using steel and glass fiber reinforced polymer composite (GFRP) materials. For this purpose, Halgavor suspension footbridge is selected as numerical examples. The analyses are performed using three identical footbridges, first constructed from steel, second built only with GFRP material and third made of steel-GFRP material, under static and dynamic loadings using finite element method. In the finite element modeling and analyses, SAP2000 program is used. Geometric nonlinearities are taken into consideration in the analysis using P-Delta criterion. The numerical results have indicated that the responses of the three bridges are different and that the response values obtained for the GFRP composite bridge are quite less compared to the steel bridge. It is understood that GFRP material is more useful than the steel for the footbridges.
- MakaleYalnız künye2015The effects of land use type on soil erodibilty indices in Galyan-Atasu Dam Watershed, Trabzon, N.E. Turkey
Yilmaz, Murat; Usta, Ayhan; Çakir, Günay; Kahveci, Seda Nur Ince
Erodibility indices together with other soil properties of Atasu Dam watershed in Trabzon, Turkey, were analyzed according to land use regimes (grassland, cultivated land, coniferous forest land and broadleaf forest land) and the granite parent material from which the soil develops. The findings could be applied to future management plans with the aim of enhancing the ability of Atasu Dam to supply water for drinking, domestic use and irrigation to the region. Forty sample plots having the same northern aspect were selected from bordering lands. Cross-section soil samples from depth levels of 0-10 cm and 10-30 cm were gathered from the selected sites. Particle size distribution, soil organic matter (SOM), dispersion ratio (DR), erosion ratio (ER), colloid-moisture equivalent ratio (C-MER), structural stability index (SSI), water dispersible clay (WDC), clay dispersion ratio (CDR), clay flocculation index (CFI), exchangeable cations, exchangeable sodium ratio (ESR), sodium adsorption ratio (SAR) and soil reaction (pH) analyses were performed. A variance analysis was carried out in order to determine if the obtained results varied according to land use type. Soil samples from a variety of sites in areas with granite as parent material were applied to erodibility indices and the sites were found to be susceptible to erosion. Some other characteristics were also found to be effective on the erodibility indices, including the relationship of soil organics, which was also considered to be to a factor of interest in this study. Soils that were developed from granite parent material in areas covered by forest were observed to be more susceptible to erosion. These results were fairly significant in the context of the study area of the Galyan-Atasu Dam watershed. This study suggests that incorporating these findings in planning and management-related activities can potentially lead to improvement of the basin and contribute to the economic life of the dam.
- MakaleYalnız künye2015Probiotic butter: Stability, free fatty acid composition and some quality parameters during refrigerated storage
Erkaya, Tuba; Ürkek, Bayram; Doğru, Ünsal; Çetin, Bülent; Şengül, Mustafa
This study was carried out to determine whether butter can be a carrier for probiotics by observing the survivability of selected probiotic strains during cold storage. The effects of using probiotic adjunct cultures (Lactobacillus acidophilus ATCC 4356 and Bifidobacterium bifidum ATCC 29521) in butter on microbiological counts, sensory characteristics, chemical characteristics and free fatty acid (FFA) composition during storage for 60 days were investigated. The butter samples produced with B. bifidum ATCC 29521 maintained the probiotic characteristics, in that the level of viable cells of the probiotic was >106 cfu g-1 until 30 days of storage. The highest scores in sensory assessment were obtained on the first day of storage. FFAs, including C2:0, C6:0, C14:0 and C18:1, were affected significantly by storage period and by the adjunct cultures, however conjugated linoleic acid and C18:2 were not affected by storage period and the use of probiotic adjunct culture.
- MakaleAçık Erişim2015Barley flour addition decreases the oil uptake of wheat chips during frying
Yuksel, F.; Karaman, S.; Kayacier, A.
In the present study, wheat chips enriched with barley flour at different concentrations (5, 10, 15, 20, 25 and 30%) were produced and some physicochemical and textural properties, fatty acid composition and sensory quality of enriched chips were investigated. An increase in the values of some physicochemical parameters of wheat chips, namely hardness, dry matter, ash and some fatty acids levels, was observed with the increasing barley flour concentration in the formulation. Barley flour addition provided a significant oil uptake reduction as the oil content of the control sample was 27.23% while that of the enriched samples with 30% barley flour was 18.21%. Overall acceptability of wheat chips added with no barley flour samples was determined to be similar to compared to enriched ones. But addition of barley flour higher than 10% caused a decrease in sensory scores of the final products.