Sürdürülebilir Kalkınma Amaçları

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  • MakaleYalnız künye2017Scopus SJRQ3
    The efficacy of chamomile (Matricaria chamomilla) oil as a promising anaesthetic agent for two freshwater aquarium fish species

    Can, Erkan; Kizak, Volkan; Özçiçek, Esin; Seyhaneyildiz Can, Şafak

    The efficacy of anesthetic chamomile oil (from Matricaria chamomilla L.) was evaluated in two freshwater aquarium fish species, Electric Blue Hap (Sciaenochromis fryeri) and Yellow Princess (Labidochromis caeruleus). Fish were exposed to ten concentrations of anesthetic (0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0 ml/L). The optimal concentrations identified as 0.6 ml/L for deep anesthesia (A5) for both two species. The minimal sedative concentration at the stage of loss of equilibrium (A3) was found to be 0.3 ml/L. The induction time generally decreased significantly with increasing concentrations of chamomile oil for all treatment groups. Recovery time tended to increase with increased chamomile oil at concentrations lower than 0.7 ml/L, but after this concentration it decreased. Chamomile oil proved to be effective as an anesthetic for both ornamental fish species. These findings suggest that chamomile oil is a promising anesthetic agent for aquaculture. However, further studies should be focused on species based investigations on the effect of temperature, transfer of fish, and their effect on antioxidant and oxidant status, in order to gather further information.

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  • MakaleYalnız künye2017Scopus SJRQ2
    Survey of wild food plants for human consumption in Bingöl (Turkey)

    Polat, Rıdvan; Güner, Bülent; Babacan, Ebru Yüce; Çakılcıoğlu, Uğur

    This study focused on the wild plants traditionally used for human consumption in Bingöl and its aim is to present data about the folk botanical knowledge and to give about their development in relation to plant resources and traditionally food culture. The information about the use of wild edible plants was collected from 6 different open-air-markets and 13 villages in the city during two-year period (2012-2013), through unstructured interviews. In this study, a total of 61 wild food plant taxa belonging to 25 families were established and also plant parts used, ethnographic data related to vernacular names, traditional use were recorded. Family Rosaceae is represented by the highest number of taxa (9), followed by Lamiaceae (8), Astaraceae (7), Apiaceae (6), Fabaceae (4) and Polygonaceae (3). The study showed that the plants used are either eaten raw, cooked by boiling in water, frying in oil or baked to be served as dishes such as stew, salad as hot drink. During this ethnobotanical research, it was verified that wild edible plants play an important role in diet in Bingöl. Furthermore, during our study Heracleum pastinacifolium C. Koch, Origanum acutidens (Hand.-Mazz.). Letsw, Prunus kurdica Fenzl ex Fritsch, Quercus petraea subsp. pinnatiloba (K. Koch) Menitsky has been recorded as endemic wild food plant taxa from Bingöl.

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  • MakaleYalnız künye2017Scopus SJRQ1
    Control of vortex shedding using a screen attached on the separation point of a circular cylinder and its effect on drag

    Ozkan, Gokturk Memduh; Firat, Erhan; Akilli, Huseyin

    The control of flow in the wake of a circular cylinder by an attached permeable plate having various porosity ratios was analyzed experimentally using both particle image velocimetry (PIV) and dye visualization techniques. The force measurements were also done in order to interpret the effect of control method on drag coefficient. The diameter of the cylinder and length to diameter ratio of the plate were kept constant as D=50mm and L/D=1.0, respectively. The porosity ratio, β, which can be defined as the ratio of open surface area to the whole body surface area, was taken as β=0.4, 0.5, 0.6, 0.7, and 0.8 (permeable plates). The study was performed considering deep water flow conditions with a constant Reynolds number of ReD=5000 based on the cylinder diameter. Each permeable plate was attached on the separation point and the results were compared with the results of cylinder without permeable plate (plain cylinder) in order to understand the control effect. Both qualitative and quantitative results revealed that the permeable plates of 0.4 ≤ β ≤ 0.6 are effective on controlling the unsteady flow structure downstream of the cylinder, i.e., the vortex formation length was increased, turbulent statistics was reduced and vortex shedding frequency was diminished when the permeable plate attached normal to the cylinder surface from the lower separation point. However, the drag force acting on the cylinder was found to be increased due to the increased cross-sectional area.

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  • BildiriYalnız künye2017
    Retrieval of electromagnetic properties of metamaterials with weak-coupling

    Hasar, Ugur Cem; Buldu, Gul; Barroso, Joaquim Jose

    Metamaterials (MMs) are engineered material with electromagnetic properties not commonly seen by natural materials such as negative refraction and near-zero permittivity. These materials have interesting applications ranging from perfect lens and electromagnetic cloaks to leaky-wave antennas and shifters. For such applications, electromagnetic properties of MMs are needed to be known. In this study, we propose a waveguide method for accurate electromagnetic parameter retrieval of weakly-coupled MM slabs (the wavevector is normal to the plane of the metallic inclusions). To achieve our goal, new expressions for effective permittivity and permeability as well as the magnetoelectric coupling coefficient are derived. For validation of our waveguide method, we used the simulated scattering parameters of a MM slab composed of split-ring-resonator unit cells by using a commercial 3D electromagnetic simulation program.

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  • BildiriYalnız künye2017
    Determination of optimum conditions of crystal violet dye adsorption on almond shells

    Göksu, Ali; Tanaydin, Mehmet Kayra; Akdemir, A.O.; Ekinci, A.; Han, I.; Oztekin, A.; Set, E.; Dadasoglu, F.; Karagoz, K.

    Almond shells are considered as agricultural waste. In this study almond shells were chosen as effective adsorbents for removing Crystal Violet (CV) from dye solutions. The experimental data was analyzed via the Langmuir, Freudlich and Tempkin isotherm models to obtain isotherm model for the system and the data shows that the Langmuir isotherm model fitted best. Also, the thermodynamics parameters such as ΔH0, ΔG0 and ΔS0 were investigated. The results of the study show that almond shells are efficient and advantageous economically for removing CV from aqueous solutions. The maximum adsorption capacity was found to be 1.1375mg/g on almond shell. Adsorption kinetic studies indicate that the adsorption data can be represented by a pseudo second order model.

    • SDG 12 · Sorumlu Üretim ve Tüketim
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  • MakaleYalnız künye2017Scopus SJRQ3
    Characterization of antioxidant activity, vitamins, and elemental composition of ciris (Asphodelus aestivus L.) from Tunceli, Turkey

    Unal, Ilkay; Kaplan Ince, Olcay

    Ciris (Asphodelus aestivus L.), which has been used for a wide range of medicinal purposes and is indigenous in Tunceli, Turkey, was collected from the eastern and western parts of the city. The goal of this study was to determine the vitamins, essential elements, and antioxidant activity of this natural product. The 2,2-diphenyl-1-picrylhydrazyl-hydrate radical scavenging activity, metal chelating activity, reducing power, total phenolics, and Vitamin A, Vitamin C, sodium, potassium, phosphorus, magnesium, calcium, copper, manganese, and zinc concentrations were determined in ciris extracts. The concentrations of Vitamin A, Vitamin C, and Mn of ciris from west Tunceli were higher than samples from the east.

    • SDG 2 · Açlığa Son
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  • MakaleYalnız künye2017Scopus SJRQ1
    Ohmic heating assisted vacuum evaporation of pomegranate juice: Electrical conductivity changes

    Icier, Filiz; Yildiz, Hasan; Sabanci, Serdal; Cevik, Mutlu; Cokgezme, Omer Faruk

    A novel electrical heating method, named as ohmic heating, was successfully integrated to vacuum evaporation system, and pomegranate juice was concentrated until its total soluble dry matter content reached to 40% by applying three different voltage gradients (7.5, 10, and 12.5 V/cm) at 180 mm Hg absolute pressure in this system. Total evaporation times were determined as 152, 78, and 53 min at the voltage gradients of 7.5, 10, and 12.5 V/cm, respectively. The concentration time of pomegranate juice was shortened about 56% by ohmic heating relative to conventional evaporation. The electrical conductivity values were increased up to reach 25% TSDM for 7.5 V/cm and at 35% TSDM for 10 V/cm, then showed a decreasing pattern. However, it was constant (0.55 ± 0.01 S/m) during evaporation process at 12.5 V/cm. It is recommended that the ohmic heating method could be successfully integrated to vacuum evaporation process to shorten the processing time significantly. Industrial relevance Ohmic heating has been utilized as alternative method for the purpose of heating, pasteurization, cooking etc., and relatively better products can be obtained by ohmic heating. Nowadays, energy efficient systems are needed in concentrated juice production. The integration of ohmic heating to the conventional vacuum systems could serve the production high quality juice concentrates with efficient use of energy. In present study, ohmic heating assisted vacuum evaporation of pomegranate juice was conducted, successfully. This method decreased the total process time for juice concentration, which is critically important for industrial scale productions. This novel method can be implemented to the fruit juice production lines by taking into account of design characteristics of ohmic systems such as electrical conductivity changes depending on both temperature and total soluble solids concentration. The effects of main process parameter, named as voltage gradient, on electrical conductivity changes during electrical heating assisted evaporation process has been also reported in the present study.

    • SDG 2 · Açlığa Son
    • SDG 7 · Erişilebilir ve Temiz Enerji
    AtıfScopus93OpenAlex97
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  • BildiriYalnız künye2017
    A heuristic algorithm for assembly line balancing with stochastic sequence-dependent setup times

    Çil, Zeynel Abidin; Mete, Süleyman; Özceylan, Eren; Diri Kenger, Zülal; Çil, Hande

    Having analyzed studies on the assembly line balancing problem considering setup times, a few papers are observed. However, researches show that setup time plays an important role in total production time. Besides, in these studies, the setup times are assumed to be deterministic. Considering setup times to be deterministic decreases proximity of problem to real life application. Because the operation and setup times may vary in real applications due to human factors, machine breakdowns, lack of equipment and environmental factors. Therefore, in this study, assembly line balancing problem is investigated considering the sequence-dependent stochastic setup times. A heuristic approach based on COMSOAL is presented for the problem and it is seen that algorithm is effective for the problem.

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  • MakaleYalnız künye2017Scopus SJRQ3
    Using food waste biomass as effective adsorbents in water and wastewater treatment for Cu(II) removal

    Ince, Muharrem; Ince, Olcay Kaplan; Asam, Eren; Önal, Ali

    The present study investigated Cu(II) ion adsorption onto banana peel, chestnut shell, and tea leaf waste in aqueous medium under different experimental conditions. Batch adsorption studies were carried out with various Cu(II) concentrations as well as the influence of process parameters such as pH, contact time, and adsorbent amount on the removal of copper, and the optimum conditions for maximum removal of copper from an aqueous solution. These food waste biomass adsorbents were applied to mineral water and industrial wastewater samples and the copper removal potentials were compared. The nature of the adsorbents and metal ion interactions was examined by the fourier transform infrared spectroscopy (FTIR) technique. The adsorption data were obtained by using the Langmuir model showing maximum adsorption capacity of banana peel, chestnut shell, and tea leaf waste at 1.94 mg g-1 2.25 mg g-1, and 3.36 mg g-1, respectively. Copper was determined by flame atomic absorption spectrometry.

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  • MakaleYalnız künye2017Scopus SJRQ2
    Phase-ambiguity-free and accurate permittivity determination from waveguide measurements

    Hasar, U.C.; Buldu, G.

    A microwave method has been proposed for accurate and unique extraction of relative complex permittivity (ϵr) of dielectric materials from 2π phase-ambiguity-free amplitude-only two-port and one-port scattering parameter measurements. Improved accuracy has been shown by the applied uncertainty analysis. For the validation of our method, ϵr of low-loss and lossy samples was extracted.

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  • MakaleYalnız künye2017Scopus SJRQ2
    Conformal, concircular, quasi-conformal and conharmonic flatness on normal complex contact metric manifolds

    Vanli, Aysel Turgut; Unal, Inan

    Conformal, concircular, quasi-conformal and conharmonic curvature tensors play an important role in Riemannian geometry. In this paper, we study on normal complex contact metric manifolds under flatness conditions of these tensors.

    AtıfScopus12WoS13OpenAlex19
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  • MakaleYalnız künye2016Scopus SJRQ3
    Determination of Drying Kinetics of Tunceli Garlic with Microwave Drying Technique

    Yoğurtçua, Hakan

    Bu çalışmada, mikrodalga tekniği kullanılarak 90-600 W mikrodalga çıkış gücü aralığında 4 mm kalınlıktaki Tunceli sarımsağı (Allium tuncelianum) dilimlerinin kuruma kinetiği incelenmiştir. Deneysel verileri temsil etmek için on adet matematiksel model kullanılmıştır. Bu modellere uygunluğu gösteren determinasyon katsayısı (R2 ), ortalama hata kareleri karekökü (root mean square error, RMSE), ki- kare (?2 ) ve yüzde hata (% E) değerleri belirlenmiştir. Determinasyon katsayısı (R2 ) değerlerinin 0.9440-0.9993 aralığında değiştiği görülmüştür. Midilli et al modeli deneysel verileri temsil eden en iyi model olarak belirlenmiştir. Mikrodalga çıkış gücündeki (P) artma ile kuruma hızı artarken örnek kütlesindeki (m) artma ile kuruma hızının azaldığı görülmüştür. Farklı örnek kütleleri için etkin difüzyon katsayıları (Deff) ve kuruma hız sabitleri (k) 90 W mikrodalga çıkış gücünde belirlenmiştir. Hem kuruma hız sabitleri hem de etkin difüzyon katsayıları için Arrhenius tipi exponansiyel bir eşitlik kullanılarak aktivasyon enerjisi belirlenmiştir. Etkin difüzyon katsayılarından ve kuruma hız sabitlerinden aktivasyon enerjileri sırasıyla 3.85 W g-1 ve 3.99 W g-1 olarak belirlenmiştir.

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  • MakaleYalnız künye2016
    Regarding the Pain of Miners: Representation of Soma Disaster in Press in Turkey

    Özdemir, İnan; Keneş Çoban, Hatice

    This article analyzes the discursive representation of 2014 Soma coal mine disaster in the most circulated five national newspapers (Zaman, Posta, Hürriyet, Sözcü, Sabah) in Turkey. As part of the analysis the newspapers were searched for a one-week period after the disaster (14-21 May 2014) and a total of 1169 news were found. The news were first analyzed with content analysis to depict the main topics of the coverage. In the second phase, the news were analyzed for their main discursive strategies. The results indicate that, despite their different political and editorial preferences, the newspapers overlooked the social, economic and political background of disaster by using three main discursive strategies: Generalization, dramatization and personalization. More specifically the press constructed a national mourning story from the pain of miners‟, dramatized the issue with focusing on the tragic stories about miners lives, deaths and heroisms and blamed the particular individuals for the causes of the mine, so that, the press covered the disaster with a class biased perspective.

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  • MakaleYalnız künye2016
    Follow up levels of football for detainees and convicts

    Karahüseyinoğlu, Furkan; Kırtepe, Abdurrahman; Karahüseyinoğlu, M. Fatih; Gacar, Atalay

    This study which aimed to find out how detainees and convicts in Open Prison and Execution İnstitution viewed themselves in terms of spectators, supporters and fans was conducted in 2015. 303 male detainees and convicts at Urfa-Siverek open prison and execution institution participated in the study. Data was analyzed through percentage and frequency distributions using descriptive statistical method. Khi square analysis results were taken into account for the significance of the relationship in terms of independent variables. As a result; Football tracking levels were separated and assessed conceptually as "spectators, supporterd and fanatics". 35.6% of convicts and prisoners defined themselves as supporters, 33.7% as spectators and 30.7% identified themselves as fans. Convicts and the prisoners were listed as supporters of Fenerbahce (31.7%), Galatasaray (25.7%), other (21.8%) and Besiktas (20.8%) teams. Majority of Galatasaray (38.4%) and Beşiktaş (42.9%) supporters themselves as supporters, while mostly Fenerbahce supporters defined themselves (43.8%) as "fanatic". Fanatical supporters were found to be upset if their teams lost and spectator, supporter or fanatics were mostly found to watch sports programs or matches

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  • MakaleYalnız künye2016
    Hidrolize edilmiş elektrostatik toz boya atık miktarına bağlı olarak poliamid 6 (PA6) ve polioksimetilenin (POM) eriyik akış indeksleri ve yoğunluklarındaki değişimlerin incelenmesi

    Kismet, Yilmaz

    Yapılan bu çalışmada, polioksimetilenin (POM) ve poliamid 6'nın içerdikleri hidrolize edilmiş elektrostatik toz boya atık miktarına bağlı eriyik akış indeksleri ve yoğunluklarındaki değişimler araştırılmıştır. Hidrolize edilmiş elektrostatik toz boya atıkları termoplastik ve termoset yapıdaki elektrostatik toz boyaların kullanılması sonucunda oluşan atıkların karışımını içermektedir. Bu atıklar ayrı ayrı poliamid 6 ve polioksimetilen içerisine ağırlıkça farklı (%10, %20 ve %30) oranlarında karıştırılarak karışımlar oluşturulmuş ve bu karışımların akışkanlıkları ile yoğunluklarındaki değişimler belirli sıcaklık ve basınç altında incelenmiştir. Böylelikle poliamid 6 (PA6) ve polioksimetilenin (POM) akışkanlıkları ve yoğunluklarının, artan hidrolize edilmiş elektrostatik toz boya atık miktarına bağlı olarak nasıl değişim gösterdiği tespit edilerek grafiklerle ortaya konmuştur.

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  • MakaleYalnız künye2016
    Arapgir ilçesi (Malatya) karayosunu florası

    Alataş, Mevlüt; Batan, Nevzat

    In this study, the moss flora of the Arapgir District (Malatya) was investigated between April and October 2015. In total 45 taxa, belonging to 11 families and 25 genera were determined by identifying moss specimens collecting the study area. At the same time all the taxa are new records from Malatya province according to the gridsquare system of Henderson (1961) six taxa are new records for B9 grid square. While the largest families in terms of number of taxa are Pottiaceae (14), Brachytheciaceae (11), Orthotrichaceae and Bryaceae (4), the largest genera are Syntrichia (5), Orthotrichum and Tortula (4). Also, the life forms of the taxa which were examined in terms of ecological and floristic have been analyzed. From life forms; while Turf life form ranks the first, Mr life form ranks the second. Finally, the most taxa within the floristic list in terms of some ecological characteristics are xerophyt, photophyt and subneutrophyt

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  • MakaleYalnız künye2016
    Giresun ilinde yayılış gösteren Hypericum L. (Hypericaceae) cinsinin mikromorfolojik ve anatomik özelliklerinin araştırılması

    Cakilcioglu, Ugur; Selvi, Selami; Türkmen, Zafer; Hayta, Şükrü; Polat, Rıdvan

    In this study the species Hypericum L. exhibiting distribution in and around Giresun were examined comparatively for micromorphological and anatomic characteristics. In anatomic examinations, cross sections from stems and leaves of the plants were examined and anatomic comparisons were made between the species. In micromorphological studies, epidermal surfaces of the stem and leaf and seed surface were examined. The micromorphological and anatomic characters were presented comparatively in tables. It was determined that the anatomic structure of the stem was almost identical in all species examined although the anatomic structure of the leaf was anatomically different. As a consequence it is seen that the characters such as structure of the stem and leaf, mesophyll type of the leaf, stoma configuration on the leaf surface (amphistomatic or hypostamatic), and canal types (type A, B and C) are the ones which will be used in systematic species discrimination.

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  • MakaleYalnız künye2016
    Gülek Boğazı'nın (Mersin-Adana) florası

    Paksoy, Mehmet Yavuz; Savran, Ahmet

    This research was carried out to determine the flora of Gülek Pass. Between 2000 and 2004, 1500 plant specimens were collected from this area. As a result of the examination on these specimens, 82 families and 839 taxa that belong to 370 genera were determined. In this study area, seven taxa belong to Pteridophyta and 832 taxa belong to Magnoliophyta divisio. The 158 of the total taxa are endemic to Turkey and the rate of endemism is 18.8%. Distribution of taxa according to phytogeographical regions is as follows; Irano-Turanian 24.9%, Mediterranean 19.6% and EuroSiberian 5.6%.

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  • MakaleYalnız künye2016
    Genital Health Status among Female Students Staying in a Dormitory of Students Loans and Dormitories Institution and Affecting Factors

    Arıkan, Duygu; Karatay, Gülnaz; Gürarslan Baş, Nazan

    Aim: The aim of the study was to assess the genitalhealth status among female students staying in adormitory of Students Loans and DormitoriesInstitution and affecting factors.Method: This descriptive study was conducted in adormitory of Students Loans and DormitoriesInstitution with the participation of 465 femalestudents on June 20-25, 2015. The research datawere collected through face-to-face interviews usinga Questionnaire on Genital Health Status amongFemale Students and Affecting Factors. These datawere analysed using numbers, percentages and chisquare significance tests in SPSS software.Findings: The mean age of the students was21.42±1.74. According to their statements, of therespondents, 60,6 % was taking a bath three timesa week, 41,2% was changing their underwear threetimes a week, 18,7 % wasn't taking bath duringmenstruation and 47,5% was using daily pads. Itwas seen that 72,7% of the students wasn'twashing their hands before going to the toilet and38,5% of them wasn't cleaning their genital areaproperly. The students reported that they hadburning sensation and pain during urination (69,7%), itchy, white, cottage cheese-like vaginaldischarge (72,9 %) and yellow or green colored,foul-smelling discharge (20,9 %) during the last oneyear period. The majority of the students havingvaginal discharge stated that they have not seen aphysician.Conclusion: It was found that the female studentsstaying in the dormitory experienced some problemsregarding genital health and hygiene

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  • MakaleYalnız künye2016
    A Conservative Neoliberal Approach of Conciliating Work and Family Life

    Gün, Servet

    Conciliating work and family life has been a popular approach viewed as an ideal solution to eradicate inequalities resulted from gender issue in western countries for 30-40 years. Showing different features in different societies by their unique societal environment, this approach is a relatively new phenomenon in Turkey. It was not until the year 2010 these kinds of policies for conciliating work and family life had been known in Turkey. Now there are some regulations to balance work and family life. Framed by the Program for Protecting Family and Dynamic Population Structure, conciliating work and family approach has been included in pro-natalist policies. This paper evaluates the policies aimed at conciliating work and family life by examining regulations, official texts and other documents and questions whether these policies can balance work and family life or not. To what extent do these policies achieve gender equality? From a political economy point of view we can argue that this approach fosters patriarchal division of labour in the households and also leads to flexible working

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