Sürdürülebilir Kalkınma Amaçları

Yazarlar

  • MakaleYayıncıda açık erişim2016Scopus SJRQ3
    Oxidative stress and some biochemical parameters during starvation and refeeding in Astacus leptodactylus (Esch., 1823)

    Barim-Oz, O.; Sahin, H.

    This study was conducted to determine the effect of starvation (78 days) and refeeding (33 days) on oxidative stress (malondialdehyde (MDA)), antioxidants (superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), glutathione peroxidase (GSH-Px)), arginase (AR) and nitric oxide (NO) in the hepatopancreas, muscle and gills tissues of freshwater crayfish (Astacus leptodactylus). Crayfish were maintained at three experimental groups: control (fed), starved (not fed) crayfish for 78 days and refeeding crayfish for 33 days after 78 days starvation. The biochemical analysis in the tissues were measured at 3, 18, 33, 48, 63 and 78 days of starvation and feeding and at 3, 18 and 33 days of refeeding. In the all periods, the MDA levels were significantly higher in tissues of starved crayfish than the control ones. Significant changes in the MDA levels were also observed amongst starvation times. In the tissues of starved crayfish was significantly higher SOD, CAT, GR and AR activities when compared to control crayfish. The GSH-Px and NO activity showed increases and decreases in different starvation periods according to control group. The parameters measured returned to control values after 33 days of the refeeding. Collectively, the present study indicated that starvation induces MDA, SOD, CAT, GSH-Px, GR, AR and NO activity in the tissues, and A. leptodactylus exposed to starvation can be withstand 78 days.

    • SDG 2 · Açlığa Son
    AtıfWoS8OpenAlex14
    Web of SciencePubMedİncele
  • MakaleAçık Erişim2016Scopus SJRQ2
    Optimization of Remazol Brilliant Blue R dye removal by novel biosorbent P. eryngii immobilized on Amberlite XAD-4 using response surface methodology

    Yonten, Vahap; Tanyol, Mehtap; Yildirim, Numan; Yildirim, Nuran Cikcikoglu; Ince, Muharrem

    This study investigates preparation of biosorbent Pleurotus eryngii immobilized on Amberlite XAD-4 and the optimal conditions for removal of Remazol Brilliant Blue R (RBBR) reactive dye from synthetic aqueous solutions. The process was optimized using the response surface methodology (RSM) developed by the application of the quadratic model associated with the central composite design. For this purpose, RSM was employed to determine the effects of operational parameters on this material as effective and available adsorbent. The investigated variables were dye initial concentration (10-60 mg L-1), solution pH (2-9), adsorbent dosage (0.1-0.5 g), and temperature (20-45 degrees C). The significant factors on each experimental design response were identified from the analysis of variance (ANOVA). The RSM indicated that optimum conditions of initial dye concentration, pH, adsorbent dosage, and temperature for maximum RBBR removal (98%) were achieved as 36.3 mg L-1, 2.0, 0.304 g, and 38.7 degrees C, respectively. The results showed that this biosorbent was an appropriate adsorbent for the removal of RBBR from aqueous solutions.

    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfWoS17OpenAlex20
    Web of Scienceİncele
  • MakaleYalnız künye2016Scopus SJRQ3
    Optimization of Cadmium Removal from Water by Hydroxyapatite Using Experimental Design Methodology

    Ince, Olcay Kaplan; Ince, Muharrem; Karaaslan, Nagihan M.; Yonten, Vahap

    The presence of cadmium in water is a serious threat to the environment. The removal of cadmium using hydroxyapatite as an adsorbent was studied in an aqueous system. Hydroxyapatite was prepared to process the adsorption of cadmium from aqueous solution. Experimental design methodology and response surface methodology (RSM) with a quadratic model associated with central composite design was used to optimize the pH, initial heavy metal concentration, final volume, and adsorbent dosage for the removal of cadmium. Analysis of variance identified significant factors on each parameter. RSM indicated that a pH of 8.5, a sample volume of 166 mL, an adsorbent of dosage 0.57 g, and a contact time of 82 min were optimal for the adsorption of Cd(II). Under these conditions, the removal of Cd(II) was 895 mg g(-1).

    • SDG 6 · Temiz Su ve Sanitasyon
    AtıfWoS17OpenAlex15
    Web of Scienceİncele
  • MakaleYalnız künye2016Scopus SJRQ3
    Efficiency of some soil bacteria for chemical oxygen demand reduction of synthetic chlorsulfuron solutions under agiated culture conditions

    Erguven, G. O.; Yildirim, N.

    This study searches the efficiency of certain soil bacteria on chemical oxygen demand (COD) reduction of synthetic chlorsulfuron solutions under agitated culture conditions. It also aims to determine the turbidity of liquid culture medium with chlorsulfuron during bacterial incubation for 120 hours. As a result the highest and lowest COD removal efficiency of bacteria was determined for Bacillus simplex as 94% and for Micrococcus luteus as 70%, respectively at the end of the 96th hour. It was found that COD removal efficiency showed certain differences depend on the bacterial species. It was also observed that B. simplex had the highest COD removal efficiency and it was a suitable bacterium species for bioremediation of a chlorsulfuron contaminated soils.

    AtıfWoS24OpenAlex3
    Web of SciencePubMedİncele
  • MakaleAçık Erişim2016Scopus SJRQ2
    Nickel, Lead, and Cadmium Removal Using a Low-Cost Adsorbent - Banana Peel

    Ince, Muharrem; Ince, Olcay Kaplan; Yonten, Vahap; Karaaslan, Nagihan M.

    Water pollution because of inorganic contaminants is a serious problem due to the acute toxicities and carcinogenic nature of pollutants. Recently, much attention has been focused on using natural and low-cost adsorbents, especially food residues, for removing toxic metal ions. Batch removal of nickel (Ni(II)), lead (Pb(II)), and cadmium (Cd(II)) from aqueous solution using a natural adsorbent is described in this study. Effects of various parameters on adsorption capacities such as pH, adsorbent dose, and stirring time were investigated by batch experiments. The maximum adsorption capacities for Ni(II), Pb(II), and Cd(II) ions were 1.6 mg g(-1), 125 mg g(-1), and 84 mg g(-1), respectively. Characterization of the surface modification was performed with FTIR measurements. FTIR spectra showed that chemisorption takes place at the surface of the adsorbent. The Freundlich and Langmuir adsorption isotherms were used to evaluate the equilibrium data. The characteristic parameters for each isotherm were determined. The Langmuir and Freundlich isotherm provided the best correlation for Ni(II), Cd(II), and Pb(II) using banana peel.

    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfWoS10OpenAlex13
    Web of Scienceİncele
  • MakaleYalnız künye2016Scopus SJRQ4
    SCREENING OF TOTAL ANTIOXIDANT STATUS OF RICOTTA L. AND SOME GRAMMOSCIADIUM DC SPECIES FROM TURKEY

    Yildirim, Nuran Cikcikoglu; Paksoy, Mehmet Yavuz; Yildirim, Numan; Yuce, Ebru

    This study was aimed at screening the total antioxidant status (TAS) of genus Ricotta L. and some Grammosciadium L. from Turkey in order to find new potential sources of natural antioxidants. The TAS level of a total of 12 plant extracts from non-edible plant materials was examined. According to the results, hexanic extract of R. sinuata plant exhibited the lowest antioxidant status (2.41 mmol Trolox equivalent/l). The highest TAS level was determined in ethanolic extract of the G. daucoides (4.36 mmol Trolox equivalent/l). As a result, due to its antioxidative properties, ethanolic extract of G. daucoides can be utilized as a natural source of antioxidants.

  • MakaleAçık Erişim2016Scopus SJRQ2
    Correlations between some operation parameters and efficiency evaluation of domestic wastewater treatment plant in Tunceli (Turkey)

    Tanyol, Mehtap; Demir, Veysel

    The purposes of this work are to monitor certain operating parameters in influent and effluent of domestic wastewater treatment plant in Tunceli, Turkey, to determine the relationships among these parameters, and also to evaluate the effectiveness of the treatment plant. The mean values of the parameters measured in the samples taken from the plant influent like pH, temperature, electrical conductivity, dissolved oxygen, total dissolved solids, suspended solids, the total solids, volatile suspended solid, biological oxygen demand, and chemical oxygen demand, are 7.60 +/- 0.07, 11.66 +/- 0.74 degrees C, 1,070.75 +/- 10.67 mu s/cm, 3.78 +/- 0.32 mg/L, 524.42 +/- 5.28 mg/L, 390.58 +/- 40.22 mg/L, 857.50 +/- 61.30 mg/L, 496.17 +/- 82.30 mg/L, 195.33 +/- 8.11 mg/L, and 653.67 +/- 42.12 mg/L, respectively. The values of these parameters after the treatment are 7.68 +/- 0.08, 10.61 +/- 0.70 degrees C, 1,041.25 +/- 15.31 mu s/cm, 8.38 +/- 0.10 mg/L, 510.17 +/- 7.49 mg/L, 49.17 +/- 8.88 mg/L, 443.08 +/- 38.95 mg/L, 152.33 +/- 27.95 mg/L, 13.67 +/- 2.33 mg/L, and 44.66 +/- 12.72 mg/L, respectively. Correlation analyses conducted to explain the potential relationship between the analyzed parameters demonstrated that there were both negative and positive correlations between the influent and effluent operational parameters. Results supported the fact that there were significant improvements in wastewater quality after treatment.

    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfWoS12OpenAlex15
    Web of Scienceİncele
  • MakaleAçık Erişim2016Scopus SJRQ2
    Adsorption of bisphenol A from aqueous solutions by Pleurotus eryngii immobilized on Amberlite XAD-4 using as a new adsorbent

    Yonten, Vahap; Ince, Muharrem; Tanyol, Mehtap; Yildirim, Numan

    The adsorption of bisphenol A (BPA) in a fixed-bed column was evaluated in this work. Fungus Pleurotus eryngii isolated from Tunceli (Turkey) immobilized on XAD-4 resin was used as an adsorbent for decontamination of BPA from aqueous solutions. The extent of BPA removal capacity was evaluated as a function of parameters such as pH, volume of the sample, and column bed height. Adsorption isotherms of BPA on immobilized P. eryngii were determined and correlated with common isotherm equations such as Langmuir and Freundlich models. The mechanism of adsorption of BPA was analyzed preadsorption (XAD-4+fungus) and postadsorption (XAD-4+fungus+BPA) using fourier transform infrared spectroscopy. The results show that adsorption ability of BPA by immobilized P. eryngii is possible and this system yields the best degree of BPA removal (90%) at pH 11 for an initial load of 120mgL(-1). Therefore, this material can be used as a very effective adsorbent for BPA decontamination in aqueous solutions.

    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfWoS17OpenAlex21
    Web of Scienceİncele
  • MakaleAçık Erişim2016
    Investigation of the changes in melt flow indexes (MFI) and densities of polyamide 6 (PA6) and polyoxymethylene (POM) related with hydrolyzed powder coating waste amount

    Kismet, Yilmaz

    In this study, the changes in melt flow indexes and densities of polyamide 6 (PA6) and polyoxymethylene (POM) depending on the amount of added Hydrolyzed Powder Coating Waste, have been investigated. Hydrolyzed electrostatic powder coating waste consist of a mixture of waste formed during the thermoplastic and thermoset electrostatic powder coating process. These wastes have been mixed with polyoxymethylene and polyamide separately with different proportions (10%, 20% and 30%) by weight, and the changes in melt flow indexes and densities of these mixtures have been analyzed at certain temperature and pressure. Thus, the change of flow and densities of polyamide 6 (PA6) and the polyoxymethylene (POM) depending on the concentration of Hydrolyzed Powder Coating Waste have been determined and presented.

    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfWoS3OpenAlex3
    Web of Scienceİncele
  • MakaleAçık Erişim2016Scopus SJRQ3
    The influence of dietary antioxidant on ovarian eggs and levels of vitamin E, C, A, astaxanthin, β-carotene and oxidative stres in tissues of Astacus leptodactylus (Eschscholtz)

    Barim-Oz, O.; Sahin, H.

    The experiment was conducted to determine the most effective antioxidant (among the vitamin E (VE), vitamin C (VC), vitamin A (VA), astaxanthine (AX), beta-carotene (beta C)) on the ovarian egg number and size, level of VE, VC, VA, AX, beta C and oxidative stress (as malondialdehyde (MDA)) in the hepatopancreas, ovarian, gills and muscle tissue during ovarian development of Astacus leptodactylus. One control (C) and five experimental diets (EE, EC, EA, EAX and E beta C) were prepared. The EE, EC, EA, EAX and E beta C groups were formed by added 150 mg kg-1 VE, 200 mg kg-1 VC, 240 mg kg-1 VA, 200 mg kg-1 AX and 200 mg kg-1 beta C to diet C, respectively. At the end of the experiment found that the dietary antioxidants increased ovarian egg number and size and reduced the level of MDA in the tissues. Ovarian egg number and size were highest in the EE and EAX diet groups in the comparison to control (p< 0.001). The level of MDA in the tissues was lowest in the EAX diet group in the comparison to control (p< 0.001). The highest levels of VE, VC, VA, AX and beta C were found in the hepatopancreas and ovarian compared with muscle and gills. The highest level of MDA also was determined in the ovarian according to other tissues. In conclusion, the VE and AX in broodstock diets were the most effective antioxidants on the ovarian egg number and size of A. leptodactylus.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfWoS16OpenAlex53
    Web of SciencePubMedİncele
  • MakaleYalnız künye2016Scopus SJRQ2
    Testing the human capital development model: the case of apprenticeships in Turkey

    Akpinar, Taner; Gün, Servet

    Human capital theory was developed to study how individual agents make rational choices or how they invest in human capital to maximize their welfare. One of the leading founders of this perspective, Becker, argues that schooling, on-the-job training, medical care, migration and searching for information about prices and incomes are different types of human capital as all these investments improve skills, knowledge or health, thereby increasing individual welfare. He states that education and training are the most important investments in human capital. Apprenticeship training is, thus, identified and treated as a type of investment in human capital. At first glance, it seems that apprentices who are being trained are acquiring skills in a specific vocation. One would suppose that the trainees are getting knowledge and skills and that they would become masters in their profession after a long training process. However, further enquiry is needed to see if this is the case in reality. The present small-scale, exploratory study, based on 20 interviews - 10 with apprentices and 10 with their employers - aims to investigate the apprenticeship training system in Turkey. In doing so, it seeks to test the basic tenets of human capital theory against the facts discovered. The findings, if they could be generalized, suggest that the Turkish apprenticeship system is a form of child labour rather than a training process. Contrary to apprentice training being a human capital investment, the study finds that trainees do not rationally decide to enter an apprenticeship nor are they selected by a meritocratic system. All of them come from poor peasant families or low-wage working families where the most pressing need is for the child to earn money.

    • SDG 4 · Nitelikli Eğitim
    • SDG 8 · İnsana Yakışır İş ve Ekonomik Büyüme
    AtıfWoS6OpenAlex9
    Web of Scienceİncele
  • MakaleYalnız künye2016Scopus SJRQ3
    Father's Perceptions of Their Role in Fathers with Babies Aged between 4 and 12 Months in Turkey

    Durmaz, Gulbeyaz Baran; Bas, Nazan Guraslan; Gümüs, Funda

    A cross-sectional study was conducted to examine fathers' perceptions of their parental role among men with babies aged 4 to 12 months. Datawere collected on Personal Information Forms alongside scores from the Father Role Perception Scale between January and June 2015. Data were analyzed using percentage distributions, independent samples t test, and one-way ANOVA for comparison of more than two groups. Statistically significant differences were found in the scores of fathers for the fathers' role perception scale and their educational background, their profession, their level of income, their wives' educational background and their health insurance (p < .05). The fathers had high positive parental perception level scores. (C) 2016 Elsevier Inc. All rights reserved.

    AtıfWoS1OpenAlex4
    Web of Scienceİncele
  • MakaleYalnız künye2016Scopus SJRQ3
    CRYOPRESERVATION OF GOLDFISH (Carassius auratus) SPERMATOZOA: EFFECTS OF EXTENDER SUPPLEMENTED WITH TAURINE ON SPERM MOTILITY AND DNA DAMAGE

    Kutluyer, Filiz; Ögretmen, Fatih; Inanan, Burak Evren

    BACKGROUND: Amino acids, present in seminal plasma at high concentration, protect spermatozoa against cell damage during cryopreservation. OBJECTIVE: Experiments were designed to analyze the effect of semen extender supplemented with taurine on post-thawed sperm motility and duration, as well as DNA damage. MATERIALS AND METHODS: Extenders were supplemented with 1, 2 or 4 mM taurine. Semen samples were diluted at the ratio of 1:9 with the extenders. Diluted samples were aspirated into 0.25 ml French straws and 0.1 ml pellets. DNA damage was assessed with the comet assay after cryopreservation. RESULTS: The percentage and duration of sperm motility were significantly increased by taurine. Additionally, sperm motility and the motility period in pellets were higher than in straws. The best concentration of taurine was 4 mM, and the highest post-thaw motility rate (72.50 +/- 3.54%) and duration (17.50 +/- 0.71 s) were obtained from the extender with 4 mM in pellets. DNA damage was decreased after taurine supplementation. CONCLUSION: Pellets could be used for goldfish sperm cryopreservation. The addition of 4 mM taurine increases the post-thaw motility and decreases DNA damage on goldfish semen.

    AtıfWoS11
    Web of SciencePubMedİncele
  • MakaleAçık Erişim2016Scopus SJRQ1
    A modified human reliability analysis for cargo operation in single point mooring (SPM) off-shore units

    Akyuz, Emre; Celik, Erkan

    A Single Point Mooring (SPM) unit is a widely recognised off-shore terminal facility in the marine industry since a considerable amount of liquid cargoes can easily be transferred into huge tankers such as VLCCs or ULCCs. Although the system presents high safety standards, any minor accidents due to human error may cause serious harm to the marine environment, human life and the commodity itself. Therefore, nominated crew on-board the tanker and the unit should be very careful during SPM cargo operations. At this point, human reliability plays a critical role in avoiding potential operational or technical failures. In this context, the aim of this paper is to perform a comprehensive human reliability assessment during cargo operations of an SPM unit to enhance maritime safety in off-shore units. The paper prompts a methodological extension of human error assessment and reduction technique (HEART) by incorporating interval type-2 fuzzy sets which overcome more of the uncertainty of experts' judgement and expression in decision-making. The proposed approach not only provides theoretical insight but practical contribution to human reliability assessment in the marine and off-shore industries. (C) 2016 Elsevier Ltd. All rights reserved.

    AtıfWoS55OpenAlex60
    Web of Scienceİncele
  • MakaleYalnız künye2016Scopus SJRQ3
    Production Optimisation of a Land-Based Trout Farm and the Reduction of its Environmental Effects

    Guner, Yusuf; Kizak, Volkan; Saygi, Hulya; Turan, Gamze; Tekogul, Hatice; Karacalar, Ulviye; Gulec, Fatih; Hekimoglu, Muge

    In this study, certain water quality parameters (water temperature, dissolved oxygen (DO), pH, total inorganic nitrogen (TIN), phosphate (PO4), nitrite (NO2), nitrate (NO3), ammonium (NH4), and (BOD5) in the effluents and the efficiency of the treatment systems for eliminating wastes at a commercial trout farm with a capacity of 10 tons/year in Izmir (Kemalpasa) were examined. The DO, temperature, pH, TIN, PO4, NO2, NO3, and BOD5 measured, were different in the outlet waters when compared with the inlet waters (p<0.05). The settling basin did not reduce the TIN and PO4, on the contrary, it caused an increase in the nitrogen (N) up to 19.9% and phosphorus (P) up to 20.30%, while the wetlands reduced the N, P, and BOD5 up to 53.2%, 58.2%, and 36.5%, respectively (p<0.05). According to the chemical and biological methods, the averages of the TIN and P loads for one tone of cultured trout without treatment were estimated to be were 80 kg and 7 kg, respectively. The annual TIN load of this trout farm was estimated to be 21.3 kg while the TP load was 2.9 kg for one tone of cultured trout when the treatment efficiency was taken into account. The microbiological analyses conducted with the effluent waters showed that the rate of aerobic mesophilic bacteria was found to be high in the summer but low in the winter. It was also detected that the coliform group bacteria were present in the environment in the summer while their occurence was with-in standards in the winter. Interactions of the 9 water quality parameters were identified through the linear regression analysis in order to reduce the environmental effects of the facility DO=28.296 - (0.248 x BOD5)- (2.948 x pH) + (0.189 x temperature) + (0.851 x inlet water) + (0.163 x winter) (R-2=0.912). According to this model, the DO values were increased by the temperature, inlet water and the winter season while reduced by the BOD5 and pH. The dissolved oxygen content in the wetland outlet water was measured as being high because of the nutrient and temperature rises which boosted photosyntesis. It was concluded that using mechanical settling methods were inadequate to minimise the nutrients released into the receiving water body so wetlands should be constructed in such a way as to receive the flow of effluents from the trout farms. As a result the quality of water used by the facility has no adverse impact on the aquaculture and environmental ecosystem.

    • SDG 2 · Açlığa Son
    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfWoS1OpenAlex1
    Web of Scienceİncele
  • MakaleYalnız künye2016Scopus SJRQ1
    Awareness and attitudes of Turkish nursing students towards research and development in nursing

    Gerçek, Emine; Okursoy, Algin; Dal, Nursel Alp

    Background: The research course in nursing is included in almost all nursing curricula in national and international scales. Purpose: To compare awareness and attitudes of Turkish nursing students towards research and development in nursing. Methods: This study had descriptive and cross-sectional research design. The research sampling is consisted of 390 senior students studying during the 2013-2014 academic year in six schools of health in six different geographical regions in Turkey. The Personal Identification Form and Nursing Students' Attitudes to and Awareness of Research and Development within Nursing Scale were utilized in data collection. Results: It was determined that there is difference between awareness and attitude scores of nursing students from six different schools towards research and development in nursing according to their schools and background. Conclusion: It can be suggested that initiatives to increase awareness of students at nursing schools towards research course must be planned. (C) 2016 Elsevier Ltd. All rights reserved.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    • SDG 4 · Nitelikli Eğitim
    AtıfWoS11OpenAlex25
    Web of SciencePubMedİncele
  • Derleme MakaleAçık Erişim2016Scopus SJRQ3
    Pregnancy-Related Cardiovascular Complications: Case Presentation and Review of Literature

    Altinsoy, Hasan Baki; Alatas, Ozkan; Colak, Salih; Atalay, Hakan; Dogan, Omer Faruk

    Background: Cardiovascular complications that can cause severe catastrophic outcomes for both the mother and the fetus are rarely seen during pregnancy. Time to diagnosis is often delayed by a low degree of suspicion and atypical presentation. We report surgical strategies in three pregnant women with cardiovascular complications. Methods: A retrospective search from 2009 to 2016 identified three pregnant women who underwent urgent cardiac surgery. We used extracorporeal circulation (ECC) without cesarean section with careful follow-up of the fetuses during the perioperative and postoperative period. We used levosimendan as a potent inodilator in all patients to increase feto-placental blood flow and fetal heart rhythm. Results: Median time to diagnosis was 23.8 h (range 11.7-120 h) and median time from diagnosis to arrival in the operating theater was 9.8 h (range 7.4-19.8 h). One patient with prosthetic heart valve thrombosis underwent concomitant cesarean section prior to cardiac surgery. In a young pregnant woman who had spontaneous dissection of the left anterior descending artery, on-pump beating heart coronary artery bypass grafting was performed without cross clamping. Two and three months after surgery, cesarean sections were performed without any complication in two pregnant women. Conclusion: Because unusual cardiovascular complications are the main cause of maternal and/or fetus death during pregnancy, prompt and exact diagnosis is very important. Life-saving surgical strategy with the help of appropriate teams are necessary to optimize outcome for both mother and baby.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfWoS5OpenAlex6
    Web of SciencePubMedİncele
  • MakaleAçık Erişim2016Scopus SJRQ2
    Performance evaluation of crumb rubber and paraffin modified stone mastic asphalt

    Kök, Baha Vural; Yilmaz, Mehmet; Akpolat, Mustafa

    Recently, crumb rubber (CR) obtained from waste tires and Fischer-Tropsch paraffin are mostly used in bitumen modification to improve the performance of bituminous mixtures. Each of these additives affects the different properties of mixtures. There are limited studies in the literature about the combined usage of additive in the same mixture to utilize the different characteristics. In this study, the stability, stiffness, fatigue resistance, permanent deformation resistance, and moisture susceptibility characteristics of the stone mastic asphalt prepared with the bitumen modified with CR and paraffin were examined and compared with the control mixture. It was determined that CR-modified mixtures showed significantly more elastic characteristics. The mixture in which the 10% CR and 3% paraffin were used together gave better results in terms of moisture susceptibility and fatigue resistance when compared with the control mixture. It was determined that the use of paraffin together with CR contributed to the improved performance, and was in accordance with the CR in terms of mechanical characteristics of stone mastic asphalt.

    AtıfWoS12OpenAlex13
    Web of Scienceİncele
  • MakaleAçık Erişim2016Scopus SJRQ3
    Biomechanical comparison of straight and helical compression plates for fixation of transverse and oblique bone fractures: Modeling and experiments

    Sezek, Sinan; Aksakal, Bunyamin; Gürger, Murat; Malkoc, Melih; Say, Y.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfOpenAlex5
    Web of SciencePubMedİncele
  • MakaleAçık Erişim2016Scopus SJRQ3
    REMOVAL RATE OF HERBICIDE ACLONIFEN WITH ISOLATED BACTERIA AND FUNGI

    Erguven, G. O.; Bayhan, H.; Ikizoglu, B.; Kanat, G.; Demir, G.

    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 12 · Sorumlu Üretim ve Tüketim
    • SDG 15 · Karasal Yaşam
    AtıfOpenAlex8
    Web of Scienceİncele