Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Ashyralyev, A(8)
- Malkowsky, E(8)
- Ashyralyyev, Charyyar(7)
- Yilmaz, Ozgur(7)
- Ozdes, Duygu(6)
- Cakir, Zafer(5)
- Doğru, Bülent(5)
- Duran, Celal(5)
- Kahraman, Yakup(5)
- Arslan, Mehmet(4)
- Ashyralyev, Allaberen(4)
- Ayaydin, Hasan(4)
- Karaman, Safa(4)
- Kayacier, Ahmed(4)
- Yildirim, Mustafa(4)
- Yildiz, Salih(4)
- Yüksel, Ferhat(4)
- Aksoy, Metin(3)
- Bertan, Münevver(3)
- Cengiz, Ekrem(3)
- Doğan, Kadir Caner(3)
- Kartopu, Saffet(3)
- Kurt, Kemal(3)
- Recepoğlu, Mürşit(3)
- Sipahi, Ferkan(3)
- Temizel, Irfan(3)
- Yildiz, Emel(3)
- Yildiz, Hilal(3)
- Adanur, Hakan(2)
- Akar, Bülent(2)
- Akaryali, Enver(2)
- Akpinar, A. Sefa(2)
- Akpinar, Adem(2)
- Akyüz, Ahmet Mutlu(2)
- Ar, Ilker Murat(2)
- Arslantunali, D.(2)
- Artan, Seyfettin(2)
- Aslan, Zafer(2)
- Aydin, Faruk(2)
- Baki, Birdoğan(2)
Yayınlar
- MakaleAçık Erişim2014Simplex lattice mixture design approach on physicochemical and sensory properties of wheat chips enriched with different legume flours: An optimization study based on sensory properties
Kayacier, Ahmed; Yüksel, Ferhat; Karaman, Safa
In this study, physicochemical and sensory characteristics of wheat chips enriched with different legume flours were investigated. Wheat chips formulations were composed with the mixture of wheat flour and the mixture of three different legume flours (wheat-legume ratio 80:20). Mixture design approach was used to determine the effect of interactions between pea, chickpea and soy flour on the physicochemical and sensory properties of chips produced with wheat-legume flour mixture. In addition, product optimization was carried out by using ridge analysis to determine the optimum legume flour mixture proportions based on sensory properties of chips samples. Chickpea flour was found to be highest desired component depending on the general acceptability scores of chips. Protein content of chips increased significantly with the addition of soy flour. Optimum limit values of chickpea, pea and soy flour in the legume flour mixture used for the enrichment of the wheat chips were found to be 50-100 g/100 g, 0-60 g/100 g and 0-45 g/100 g legume flour, respectively, with respect to sensory properties. Additionally, ridge analysis results showed that the wheat chips should include only chickpea flour in the legume flour fraction to obtain maximum overall preference score (6.08).
- MakaleYayıncıda açık erişim2014Synthesis, X-ray structural characterization, NLO, MEP, NBO and HOMO-LUMO analysis using DFT study of Zn(II)bis(3,4 dimethoxybenzoate)bis(nicotinamide) dihydrate
Kaya, Afşin Ahmet; Demircioǧlu, Zeynep; Kaya, Elif Çelenk; Büyükgüngör, Orhan
A single crystal of Zn(II)bis(3,4 dimethoxybenzoate)bis(nicotinamide) dihydrate, formulated as C30H38N4O 14Zn, (I) has been obtained. According to experimental data, the complex can be characterized in the solid state as mononuclear, with a distorted octahedral stereochemistry. The distorted octahedral stereochemistry adopted by the complex was further confirmed by X-ray structure analysis of the current study, which consists of a six-coordinate Zn atom in a distorted octahedral environment constructed from two N atoms and four O atoms. The title compound crystallizes in the monoclinic space group C 2/c with a = 27.9248(18) Å, b = 8.5941(4) Å, c = 14.8344(11) Å, α = 90°, β = 108.651(5), γ = 90°, Z = 4. The molecular structure and geometry were also optimized using the B3LYP density functional theory method employing the 6-31G (d) basis set. Molecular electrostatic potential, frontier molecular orbital analysis, nonlinear optical properties and natural bond analysis for the title molecule are also described from the computational process.
- MakaleYalnız künye2014Response Surface Methodology Study for Optimization of Effects of Fiber Level, Frying Temperature, and Frying Time on Some Physicochemical, Textural, and Sensory Properties of Wheat Chips Enriched with Apple Fiber
Kayacier, Ahmed; Yüksel, Ferhat; Karaman, Safa
In this study, wheat chips enriched with apple fiber were produced, and response surface methodology was used for the determination of the simultaneous effects of processing variables selected as fiber level (0-15 %), frying temperature (160-180 °C), and frying time (40-60 s) on some physicochemical, textural, and sensorial properties of chips. Ridge analysis was conducted to determine the optimum levels of processing variables. Predictive regression equations with high coefficient of determination (R 2 ≥ 0.728) were constructed. Addition of apple fiber increased the dry matter; ash content; L, a, and b values of samples, while increase of frying temperature caused decrease of the hardness values. Overall acceptability of chips enriched with apple fiber decreased with the increase of frying temperature, but wheat chips enriched with apple fiber and fried at low temperatures received highest sensory score. Ridge analysis showed that maximum taste score would be attained at fiber level = 15 %, frying temperature = 170 °C and frying time = 40 s.
- MakaleYalnız künye2014Redescription of phalangium riedeli staręga, 1973 (Opiliones: Phalangiidae) from Turkey with the first description of the female
Kurt, Kemal
Phalangium riedeli Staręga, 1973, previously known only from the male in Syria, is redescribed on the basis of newly collected material from Turkey. The female of this species is described for the first time. Its description, characteristic features, distribution, measurements and photographs of genitalia and general habitus of both sexes are presented.
- MakaleAçık Erişim2014Yield and quality traits of some perennial forages as both sole crops and intercropping mixtures under irrigated conditions
Sayar, Mehmet Salih; Han, Yavuz; Yolcu, Halil; Yücel, Hatice
A field study was conducted to evaluate the yield and quality traits of sole lucerne (L), sole bromegrass (B), sole tall fescue (T), sole orchardgrass (O), sole ryegrass (R), and lucerne + bromegrass + tall fescue (L+B+T) and lucerne + bromegrass + tall fescue + orchardgrass + ryegrass (L+B+T+O+R) intercropping mixtures at the GAP International Agricultural Research and Training Centre under the irrigated conditions during 2009, 2010, and 2011 in the Southeastern Turkey. Dry matter yield (DMY), crude protein content (CPC), crude protein yield (CPY), acid detergent fiber (ADF), neutral detergent fiber (NDF), dry digestible matter (DDM), dry matter intake (DMI), total digestible nutrients (TDN), and relative feed value (RFV) were determined in this study. The L+B+T intercropping mixture and sole lucerne provided higher yields than the other crops tested. Sole lucerne had higher protein and quality contents than the other sole perennial forages and intercropping mixtures. The L+B+T intercropping mixture had a higher yield and quality than the other sole perennial forages and intercropping mixtures, with the exception of sole lucerne.
- Kitap BölümüYalnız künye2014Electronic word-of-mouth: Factors affecting consumer review writing behavior on electronic platforms
Yildiz, Emel; Ayyildiz, Hasan
This chapter examines the effects of word-of-mouth motivations and culture on electronic word-of-mouth behavior. This chapter also focuses on the effects of cultural values on electronic word-of-mouth behavior. Within the context of the study, online forums in which consumers write comments have been used. The data was obtained from an electronic survey provided to 561 consumers. The reliability of scales has been tested via the Cronbach's Alfa Method and the validity of scales has been tested by Factor Analysis. After determining the reliability and validity of the scales, research hypotheses were tested by Structural Equation Modeling (SEM) and Multiple Regression Analysis. The findings show that motivation and culture have positive effects on electronic word-of-mouth behavior. This chapter also attempts to explain the effects of cultural values on electronic word-of-mouth behavior, and it is found that while uncertainty avodiance and masculinity have positive effects, individualism and power distance have negative effects on electronic word-of-mouth behavior.
- MakaleAçık Erişim2014New record of the genus homolophus (Opiliones: Phalangiidae) in Turkey and sem studies on its morphology
Kurt, Kemal
In this study, Homolophus nakhichevanicus Snegovaya, 2012 (Opiliones: Phalangiidae) was recorded in Turkey for the first time. This is only the second known location for this species, the first being the type locality (Nakhichevan Autonomous Republic, Azerbaijan). The morphological characteristics are described along with a scannig electron microscope (SEM) study on the dorsal aspect, crown-shape on cephalothorax, ocularium, chelicera, pedipalp, the first pair of legs. The male genitalia of the specimens are also presented.
- MakaleYalnız künye2014Nonmedical Methods to Relieve Low Back Pain Caused by Lumbar Disc Herniation: A Descriptive Study in Northeastern Turkey
Cilingir, Dilek; Hintistan, Sevilay; Yigitbas, Cagla; Nural, Nesrin
Low back pain due to the effects of lumbar disc herniation is a common complaint of patients who often subsequently seek help from medical professionals. It is also a significant health problem which is quite difficult to treat. This descriptive study was conducted to determine nonmedical methods used by patients with lumbar disc herniation to relieve low back pain; the patients' intensity of low back pain when they were admitted to the hospital was also explored. Ninety-two patients with lumbar disc herniation participated in this study, which was carried out at a university hospital in northeastern Turkey. Data were collected using a patient information form and the visual analog scale (VAS). When the patients were admitted to hospital, their mean VAS score was 6.56 ± 2.45. The study results showed that as a first choice nearly all of the patients (94.6%) with lumbar disc herniation preferred consulting with their physicians before to obtain relief for low back pain. However, in addition to seeing their physician, more than one-half of these patients (57.6%) also used nonmedical methods. The primary nonmedical methods were hot/cold compresses, wrapping various substances on the back, and herbal preparations. An increase in pain was noted by 17.0% of patients after using nonmedical methods. Findings indicated that more than two-thirds of patients experienced either no change or an increase in pain after using nonmedical methods to find relief.
- MakaleYalnız künye2014An investigatio n of the antioxidant activities and some physicochemical characteristics of strawberr y added yogurt
Engül, M.S.; Erkaya, T.; Yildiz, H.
The effect of adding strawberry pulp to yogurt on its physicochemical properties, antioxidant activity and sensory characteristics was studied. For this purpose, experimental yogurts were produced by the addition of strawberry pulp (at 8, 12 and 16%) to plain yogurt and analyses were carried out through 14 days of cold storage. The titratable acidity and viscosity values of yogurts increased with the increasing of strawberry pulp concentration. Conversely, the total solid, fat, protein, ash, pH and syneresis values decreased. Antioxidant activity (β-caroten bleaching assay) and IC50 (DPPH radical scavenging assay) in yogurts ranged from 77.71 to 86.12%, 205.70 to 2241.09 μg /mL during storage, respectively. For the sensory properties of yogurts, yogurt including 16% of strawberry pulp received the highest overall acceptability score on the first day of storage.
- MakaleYalnız künye2014Effect of different surface oxidation treatments on structural, mechanical and tribological properties of ultrafine-grained titanium
Çelik, Ilhan; Alsaran, Akgün; Purcek, Gencaga
Four different surface oxidation treatments, so-called, anodizing oxidation (AO), micro-arc oxidation (MAO), plasma oxidation (PO) and thermal oxidation (TO), were applied to ultrafine-grained (UFG) pure titanium produced by equal-channel angular extrusion/pressing (ECAE/P). Before and after all treatments, mechanical, structural and tribological properties were investigated. The strength of pure titanium increased substantially after ECAE process. TiO2 phases included the anatase and/or the rutile formed on the surface of UFG Ti depending on oxidation treatments. High strength of UFG Ti was deteriorated by TO and PO treatments because of the recrystallization occurred at high-temperature, while applications of MAO and AO did not cause a significant decrease in its strength due to the prevention of recrystallization of UFG Ti. All oxidation treatments brought about a remarkable increase in wear resistance of UFG Ti because of the formation of adhered and hard TiO2 film developed on the surface. It was concluded that the AO and MAO treatments could be applied to the UFG Ti without any deteriorations in bulk mechanical and wear properties to obtain biocompatible pure titanium with high strength and excellent wear resistance.
- MakaleYalnız künye2014Investigation of freeze-thaw effects on mechanical properties of fiber reinforced cement mortars
Çavdar, Ahmet
Fibers are used for improving some properties of conventional concrete (which is a brittle material) such as tensile strength, abrasion resistance, absorption and crack control. This study investigates the usability of fibers against the harmful effects of freeze-thaw cycles on cement mortars. For this objective, five different types of fibers, i.e., Polypropylene (PP), Carbon (CF), Aramid (AR), Glass (GF) and Poly vinyl alcohol (PVA) in four different ratios (0.0%, 0.4%, 0.8% and 1.2%) were added to cement mortars along with an amount of air agent. These samples were then subjected to five different freeze-thaw cycles (0, 25, 50, 75 and 100). Thus, mechanical behaviors were investigated under freeze-thaw effects. The most important results of the study are summarized; the fibers increase flexural strength and deflection ability of the samples while decreasing compressive strength, dynamic modulus of elasticity and specific mass. The highest flexural strength was obtained with a 1.2% addition of CF fiber for the samples in normal conditions. The mechanical properties of the samples subjected to repetitive freeze-thaw cycles were also investigated; the best flexural strength was provided with 1.2% CF addition, while the highest dynamic modulus of elasticity was obtained with a 1.2% PP addition.
- MakaleAçık Erişim2014The Arabidopsis thaliana FASCICLIN LIKE ARABINOGALACTAN PROTEIN 4 gene acts synergistically with abscisic acid signalling to control root growth
Seifert, Georg J.; Acet, Tuba; Xue, Hui
Background and Aims The putative FASCICLIN-LIKE ARABINOGALACTAN PROTEIN 4 (At-FLA4) locus of Arabidopsis thaliana has previously been shown to be required for the normal growth of wild-type roots in response to moderately elevated salinity. However, the genetic and physiological pathway that connects At-FLA4 and normal root growth remains to be elucidated. Methods The radial swelling phenotype of At-fla4 was modulated with growth regulators and their inhibitors. The relationship of At-FLA4 to abscisic acid (ABA) signalling was analysed by probing marker gene expression and the observation of the At-fla4 phenotype in combination with ABA signalling mutants. Key Results Application of ABA suppresses the non-redundant role of At-FLA4 in the salt response. At-FLA4 positively regulates the response to low ABA concentration in roots and is required for the normal expression of ABA-and abiotic stress-induced genes. The At-fla4 phenotype is enhanced in the At-abi4 background, while two genetic suppressors of ABA-induced gene expression are required for salt oversensitivity of At-fla4. Salt oversensitivity in At-fla4 is suppressed by the CYP707A inhibitor abscinazole E2B, and salt oversensitivity in At-fla4 roots is phenocopied by chemical inhibition of ABA biosynthesis. Conclusions The predicted lipid-anchored glycoprotein At-FLA4 positively regulates cell wall biosynthesis and root growth by modulating ABA signalling.
- MakaleAçık Erişim2014The main quality attributes of non-sprayed cherry laurel (Laurocerasus officinalis Roem.) Genotypes
Yildiz, Hilal; Ercisli, Sezai; Narmanlioglu, Haluk Kemal; Guclu, Saban; Akbulut, Mustafa; Turkoglu, Zumrut
Cherry laurel (Laurocerasus officinalis) is naturally growing in black sea region in Turkey and the trees has not been spraying with pesticides. In natural growing conditions, all cherry laurel genotypes particularly fruits are seems resistant against pests. Astringent nature of fruits forms a barrier for pests. A total twelve cherry laurel accessions were harvested at full maturation time from various sites in Of district located in eastern black sea region in Turkey. Fruits were analyzed for their total phenolic (TP), total monomeric anthocyanin (TMA), total carotenoid (TC), Vitamin C and for their antioxidant capacity by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) in fruit flesh extract. Variability among accessions was greatest for total phenol (TP) and total anthocyanins content ranged from 154 to 213 mg GAE per 100 g and 397 to 519 mg per 100 g. The results indicated that cherry laurel fruits are superior and unique in terms of bioactive content in particular compared to bioactive rich fruit species.
- MakaleAçık Erişim2014The effect of cooking on total polyphenolic content and antioxidant activity of selected vegetables
Şengül, Memnune; Yildiz, Hilal; Kavaz, Arzu
The aim of this study to investigate the effect of different cooking methods (boiling, steaming, stir-frying, and microwaving) on the total polyphenolic content and total antioxidant activity of selected vegetables (beet, red cabbage, broccoli, white cabbage, black radish, kale, turnip, and red radish) from Turkey. A wide variation on total phenolic content was observed in raw vegetables, ranging from 44.94 ± 0.47 (beet, Beta vulgaris L. subsp. vulgaris) to 350.94 ± 5.18 (red radish, Raphanus sativus L.) μg gallic acid equivalent/mg of sample. Considering uncooked vegetables, the order of total antioxidant activity determined by β-carotene bleaching assay was beet > red cabbage > broccoli > white cabbage > black radish > kale > turnip > red radish. In DPPH• assay, kale had an exceptionally high antioxidant activity followed by red cabbage, broccoli, turnip, black radish, beet, white cabbage, and red radish.
- EditoryalYalnız künye2014Preface
Christiansen, Bryan; Yildiz, Salih; Yildiz, Emel
- MakaleAçık Erişim2014Kinetics, thermodynamics, and equilibrium evaluation of adsorptive removal of methylene blue onto natural illitic clay mineral
Ozdes, Duygu; Duran, Celal; Senturk, Hasan Basri; Avan, Hilal; Bicer, Burcin
The natural illitic clay mineral (NICM) has been used as a low cost and highly effective adsorbent in the removal of a toxic cationic dye, methylene blue (MB), from aqueous solution by a batch adsorption technique. The effects of experimental parameters such as initial pH of the aqueous solution, contact time, initial MB concentration, adsorbent concentration, ionic strength, and temperature were studied in detail upon the adsorption process. The process was found to be independent of initial solution pH and the adequate equilibrium time for the adsorption of MB onto NICM was only 60 m. The experimental data were analyzed by the Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models and showed a good fit with both the Langmuir and Freundlich isotherm models. The monolayer adsorption capacity of NICM was found to be 24.87 mg g-1 by using Langmuir isotherm model. The kinetics of the adsorption were tested using pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. The results showed that the adsorption of MB onto NICM proceeds according to the pseudo-second-order model. Thermodynamic parameters indicated that the present adsorption process was feasible, spontaneous, and endothermic in nature.
- MakaleYalnız künye2014Synthesis of cyclohexane derivatives including Br, Cl, N, O, and S at 1,2,4,5-positions: Selectivity in addition reactions Dedicated to Professor Dr. Metin Balci on the occasion of his 65th anniversary
Kaya, Afşin Ahmet; Menzek, Abdullah; Şahin, Ertan
Brominations of mono addition products of 1,4-cyclohexadiene with 2,4-dinitrobenzenesulfenyl chloride (RSCl) selectively gave 1R(S),2R(S),4R(S), 5R(S)-4,5-dibromo-2-(2,4-dinitrophenylthio)cyclohexyl acetate and 1R(S),2R(S),4R(S),5R(S)-4,5-dibromo-2-chlorocyclohexyl)(2,4-dinitrophenylthio) sulfane. From series reactions 7-oxabicyclo[4.1.0]hept-3-ene with reagents, such as RSCl, NaN3, and H2SO4/Ac2O, six 1,2,4,5-tetrasubstituted cyclohexane derivatives including S, O, N, Cl, and Br were selectively obtained. Formations and structures of the products were discussed.
- MakaleYayıncıda açık erişim2014Characterization of rosehip (Rosa canina L.) seed and seed oil
Ilyasoǧlu, Huri
In this study, the nutritional composition and phytochemical composition of the rosehip seed, and the fatty acid and sterol compositions of the seed oil were investigated. The rosehip seed contained valuable phytochemicals such as phenolic compounds (2554 μg/g), carotenoids (2.92 μg/g), and ascorbic acid (1798 μg/g). Furthermore, the rosehip-seed oil was rich in polyunsaturated fatty acids, linoleic acid (54.05%), linolenic acid (19.37%), and phytosterols, mainly β-sitosterol (82.1%). The rosehip seed and seed oil were found to have antioxidant activity measured by trolox equivalent antioxidant capacity assay. It can be concluded that the rosehip seed and seed oil may be utilized as a source of phytonutrients.
- Derleme MakaleYalnız künye2014Mineral chemistry and thermobarometry of Eocene monzogabbroic stocks from the Bafra (Samsun) area in Turkey: Implications for disequilibrium crystallization and emplacement conditions
Temizel, İrfan; Arslan, Mehmet; Abdioğlu, Emel; Yücel, Cem
Monzogabbro stocks including felsic enclaves (monzosyenite) around the Bafra (Samsun) area at the western edge of the Eastern Pontides cut Eocene-aged volcanic and sedimentary units. The monzogabbros contain plagioclase, alkali feldspar, clinopyroxene, olivine, hornblende, biotite, apatite, and iron-titanium oxides, whereas the felsic enclaves contain alkali feldspar, plagioclase, hornblende, biotite, clinopyroxene, and iron-titanium oxides. Mineral chemistry data suggest that magmas experienced hydrous and anhydrous crystallization in deep and shallow crustal magma chambers. Several thermobarometers were used to estimate temperatures of crystallization and emplacement for the mafic and felsic magmas. Clinopyroxene thermobarometry yielded 1100-1232 C and 5.9-8.1 kbar for monzogabbros, and 931-1109 C and 1.8-6.9 kbar for felsic enclaves. Hornblende thermobarometry and oxygen fugacity estimates reveal 739-971°C, 7.0-9.2 kbar and 10−9.71 for monzogabbros and 681-928°C, 3.0-6.1 kbar and 10−11.34 for felsic enclaves. Biotite thermobarometry shows elevated oxygen fugacity varying from 10−18.9-10−11.07 at 632-904°C and 1.29-1.89 kbar for monzogabbros, to 10−15.99 -10−11.82 at 719-873°C and 1.41-1.77 kbar for felsic enclaves. The estimated zircon and apatite saturation temperatures are 504-590°C and 693-730°C for monzogabbros and 765-775°C and 641-690°C for felsic enclaves, respectively. These data imply that several phases in the gabbroic and syenitic magmas did not necessarily crystallize simultaneously and further indicate that the mineral compositions may register intervals of disequilibrium crystallization. Besides, thermobarometry contrasts between monzogabbro and felsic enclave may be partly a consequence of extended interactions between the mafic and felsic magmas by mixing/mingling and diffusion. Additionally, the hot felsic magma was close to liquidus conditions (crystallinity < 30%) when injected into cooler mafic magma (crystallinity > 50%), and thus, the monzogabbro stocks reflect hybrid products from the mingling and incomplete mixing of these two magmas.
- MakaleYalnız künye2014Preparation and characterization of biodegradable rigid polyurethane foams from the liquefied eucalyptus and pine woods
Ertaş, Murat; Fidan, M. Said; Alma, Mehmet Hakki
In this study, eucalyptus (Eucalyptus camaldulensis L.) and pine (Pinus sylvestris L.) woods were liquefied using the the blended solvents mixture of polyethylene glycol PEG-400/glycerin in the presence of sulfuric acid as a catalyst at 140-160°C for 120 min. The insoluble parts in the liquefied eucalyptus and pine were found as 17.8 and 5.5 wt. %, respectively. The acid and hydroxyl numbers of the liquefied eucalyptus and pine were determined and compared with each other. Polyurethane-type rigid foams (RPUFs) were successfully prepared by a co-polymerization of the liquefied woods (LWs) and polymeric methylene diphenylene diisocyanate (PMDI). The compressive strength (120 to 250 kPa), the modulus of elasticity (1 to 6 MPa), the density (20 to 50 kg.nr-3) and thermal conductivity (0.0352 to 0.0374 W.mK -1) of the RPUFs prepared from the LWs were found to be almost comparable to those of the synthetic foams. Furthermore, the biodegradability of the biomass-based foams was higher than that of the synthetic ones.