Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Gul, Muhammet(85)
- Serdar, Osman(72)
- Güler, Ömer(68)
- Akkurt, Nevzat(61)
- Baskonus, Haci Mehmet(54)
- Alataş, Mevlüt(53)
- Paksoy, Mehmet Yavuz(53)
- Yucesan, Melih(53)
- Bulut, Hasan(51)
- Tekin, H.O.(51)
- ALMisned, Ghada(48)
- Yildirim, Numan(48)
- Benzer, Fulya(47)
- Kocabaş, Mehmet(45)
- Yildirim, Nuran Cikcikoglu(44)
- Kutlu, Banu(41)
- Ince, Muharrem(39)
- Zengin, Gokhan(39)
- Batan, Nevzat(37)
- Utku, Anıl(35)
- Celik, Erkan(33)
- Topal, Murat(32)
- Ezer, Tülay(31)
- Tanyol, Mehtap(31)
- Can, Erkan(30)
- Sulaiman, Tukur Abdulkadir(29)
- Aslan, Naim(28)
- Özkul, İskender(28)
- Aslan, Alper(27)
- Cakilcioglu, Ugur(27)
- Erguven, Gokhan Onder(27)
- Kutluyer, Filiz(27)
- Kök, Mediha(27)
- Ates, Mehmet(26)
- Erten, Fusun(26)
- Kahraman, Gökhan(26)
- Onat, Onur(26)
- Dal, Nursel Alp(25)
- Danabas, Durali(25)
- Say, Yakup(25)
Yayınlar
- MakaleYalnız künye2017Scopus SJRQ3MONTHLY VARIABILITY OF OXIDANT AND ANTIOXIDANT BIOMARKERS OF FRESHWATER CRAYFISH (ASTACUS LEPTODACTYLUS ESCH., 1823)
Barim-Oz, Ozden; Yilmaz, Seval; Sahin, Hulya; Benzer, Fulya
In the present study was determined the effects of monthly variability on enzymatic antioxidant (superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px)), antioxidant (reduced glutathione (GSH)) and the oxidant status (nitric oxide (NO), lipid peroxidation (MDA)) in hepatopancreas, muscle, gills and gonad tissues of freshwater crayfish (A. leptodactylus) the monthly collected throughout the year from Keban Dam Lake of Turkey. Results indicate that variations in oxidants and antioxidants with relation to month were not only tissue specific but also were gender specific. The levels of oxidant parameters were generally higher in hepatopancreas in comparison to muscle, gills and gonad of crayfish. Moreover, in tissues were also determined the different oxidants and antioxidants responses in moulting, mating, breeding and egg laying periods.
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İncele - MakaleAçık Erişim2017Scopus SJRQ2Exploring thermodynamics and kinetic parameters of immobilized catalase enzyme via adsorption on krill clay
Nas, Mehmet Salih; Gür, Aycan; Gür, Tugba; Yönten, Vahap
The thermodynamic parameters and immobilization kinetics of catalase enzyme via adsorption onto krill clay were performed in aqueous solution in batch system. The adsorbent was characterized by X-ray fluorescence, scanning electron microscope and Brunauer-Emmett-Teller N-2 adsorption measurements. The effect of some parameters to the adsorption process such as contact time, stirring speed, initial enzyme concentration, initial ionic strength, temperature and pH were analyzed. Maximum adsorption capacity (q(m)) showed a great dependence on pH and initial enzyme concentration. It was found at pH 5.5, and initial enzyme concentration, 0.0075 g L-1 values. Pseudo-first-order, pseudo-second-order and intraparticle diffusion were used to fit the kinetics data on kinetic models. Furthermore, thermodynamic activation parameters such as enthalpy, entropy, Gibbs free energy and activation energy (Delta H degrees, Delta S degrees, Delta G degrees and E-a) which reveal that catalase enzyme adsorption occur spontaneously and in endothermic nature were determined. The obtained results confirmed that the applicability of krill clay is an efficient immobilizing supporter for catalase enzyme and krill clay material can be used as a very effective adsorbent in immobilization of this enzyme from aqueous solutions.
AtıfWoS9OpenAlex13İncele - MakaleAçık Erişim2017Scopus SJRQ2Effects of subchronic exposure to zinc nanoparticles on tissue accumulation, serum biochemistry, and histopathological changes in tilapia (Oreochromis niloticus)
Kaya, Hasan; Duysak, Muge; Akbulut, Mehmet; Yilmaz, Sevdan; Guerkan, Mert; Arslan, Zikri; Demir, Veysel; Ates, Mehmet
Zinc nanoparticles (ZnNPs) are among the least investigated NPs and thus their toxicological effects are not known. In this study, tilapia (Oreochromis niloticus) were exposed to 1 and 10 mg/L suspensions of small size (SS, 40-60 nm) and large size (LS, 80-100 nm) ZnNPs for 14 days under semi-static conditions. Total Zn levels in the intestine, liver, kidney, gill, muscle tissue, and brain were measured. Blood serum glucose (GLU), glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT), and lactate dehydrogenase (LDH) were examined to elucidate the physiological disturbances induced by ZnNPs. Organ pathologies were examined for the gills, liver, and kidney to identify injuries associated with exposure. Significant accumulation was observed in the order of intestine, liver, kidney, and gills. Zn levels exhibited time- and concentration-dependent increase in the organs. Accumulation in kidney was also dependent on particle size; NPs SS-ZnNPs were trapped more effectively than LS-ZnNPs. No significant accumulation occurred in the brain (p>0.05) while Zn levels in muscle tissue increased only marginally (p0.05). Significant disturbances were noted in serum GOT and LDH (p<0.05). The GPT levels fluctuated and were not statistically different from those of controls (p>0.05). Histopathological tubular deformations and mononuclear cell infiltrations were observed in kidney sections. In addition, an increase in melano-macrophage aggregation intensity was identified on the 7th day in treatments exposed to LS-ZnNPs. Mononuclear cell infiltrations were identified in liver sections for all treatments. Both ZnNPs caused basal hyperplasia in gill sections. Fusions appeared in the gills after the 7th day in fish treated with 10 mg/L suspensions of SS-ZnNPs. In addition, separations in the secondary lamella epithelia were observed. The results indicated that exposure to ZnNPs could lead to disturbances in blood biochemistry and cause histopathological injuries in the tissues of O. niloticus. (c) 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1213-1225, 2017.
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İncele - MakaleYalnız künye2017Scopus SJRQ2The anatomical and micromorphological properties of three endemic and medicinal Salvia species (Lamiaceae) in Erzincan (Turkey)
Polat, R.; Cakilcioglu, U.; Selvi, S.; Türkmen, Z.; Kandemir, A.
In this study, we comparatively investigated three endemic Salvia species spreading in Erzincan (Turkey) in terms of anatomy and micromorphology. For anatomical investigation, cross sections taken from stems and leaves of the species were examined under light microscope. For micromorphological investigation, epidermal surface and nutlet structure were examined using scanning electron microscopy. The S. euphratica and S. divaricata species were examined anatomically and micromorphologically for the first time, and S. hypargea was examined micromorphologically for the first time. In anatomical examinations, it was seen that stem and leaf structures of the species were similar. In micromorphological analyses, it has been seen that hairiness of the nutlet surface and nutlet ornamentations (verrucate and rugose type) created a difference between the species.
AtıfWoS15OpenAlex19İncele - MakaleYalnız künye2017Scopus SJRQ3Hazardous Waste Management in Turkey
Akkoyunlu, Atilla; Avsar, Yasar; Erguven, Gokhan Onder
The objective of this study is to analyze the time processes of hazardous waste management (HWM) in Turkey. There should be a holistic evaluation of a country's hazardous waste management program in terms of theoretical qualifications, best practice applications, and, of course, problems and their solutions. This paper offers a similar approach to evaluate HWM in compliance with the European Union under the laws of environmental applications. In 2010, 786,418 tons of hazardous waste (HW) were produced in Turkey. Of this, around 18% is sent to municipal garbage dumps, 0.6% is burned, and the remaining 81.4% is disposed of by other methods (such as controlled landfill or haphazard throwaways). (C) 2017 American Society of Civil Engineers.
AtıfWoS6OpenAlex10İncele - MakaleAçık Erişim2017Scopus SJRQ3Comparative morphological, karyological and palynological investigations of three endemic Centaurea L. species (Asteraceae) in Turkey
Hayta, Sukru; Tasar, Neslihan; Kiran, Yasar; Baser, Birol
Centaurea derderiifolia Wagenitz., Centaurea drabifolia Sm. subsp. floccosa (Boiss.) Wagenitz & Greuter and Centaurea kotschyi (Boiss. & Heldr.) Hayek var. floccosa (Boiss.) Wagenitz, which are endemic taxa from Turkey belonging to Centaurea sect. Cheirolepis, were subjected to morphological, karyological and palynological investigations. The somatic chromosome numbers, pollen morphology and detailed morphometric properties were examined. The somatic chromosome numbers were determined as 2n = 2x = 36 in C. derderiifolia, C. kotschyi var. floccosa, and C. drabifolia subsp. floccosa. Karyotype analysis indicated that chromosomes of these Centaurea taxa generally have median region (m), submedian region (sm) and rarely median point (M) karyotypes. The pollen morphology of these endemic taxa of the genus Centaurea was investigated by light and scanning electron microscopy. The pollen grains of the examined species are mainly isopolar and radially symmetric, subprolate, tricolporate. Tectum ornamentation is scabrate and scabrate-perforate, amb triangular. The pollen grains of all taxa studied are 3-zonocolporate. The colpus is usually long, acute at ends and with smooth membrane. Pollen grains belonging to Cheirolepis section reveal homogeneity in their characters.
AtıfWoS7OpenAlex4İncele - MakaleAçık Erişim2017Scopus SJRQ3First microsatellite markers for Scaligeria lazica Boiss. (Apiaceae) by next-generation sequencing: population structure and genetic diversity analysis
Baldemir, Ayse; Topçu, Hayat; Paksoy, Mehmet Yavuz; Motalebipour, Elmira Ziya; Kafkas, Salih
The Apiaceae family includes a few agronomic and medicinal species, one of which is Scaligeria lazica Boiss. In this study, the genetic diversity of S. lazica was analyzed based on novel simple sequence repeat (SSR) markers using next-generation sequencing (NGS). A total of 15.17G clean Illumina data set was obtained and dinucleotide repeats were the most abundant repeats in S. lazica. Of the tested 150 SSR primer pairs, 139 ones produced amplification and 84 ones were polymorphic. Forty polymorphic SSR loci were used in genetic diversity analysis of 40 S. lazica accessions from four locations. A total of 264 alleles were amplified with an average of 6.6 alleles per locus. The polymorphism information content (PIC) was 0.60, while the observed homozygosity (Ho) and expected heterozygosity (He) values were 0.47 and 0.66, respectively. According to cluster and structure analysis, all accessions were grouped into four different clusters according to their collection sites. The SSR markers developed in this study can be tested for other Scaligeria species due to their high transferability and can be used for genetic studies in genus Scaligeria DC.
AtıfWoS3OpenAlex2İncele - MakaleYalnız künye2017Scopus SJRQ2Occupational health and safety risk assessment in hospitals: A case study using two-stage fuzzy multi-criteria approach
Gul, Muhammet; Ak, M. Fatih; Guneri, Ali Fuat
Occupational Health and Safety (OHS) is a basis to reduce occupational accidents in an acceptable level, and it covers employee health, safety, and welfare in the workplaces. Hospitals as the largest employer group in healthcare industry in Turkey face major hazards categorized as chemical, biological, physical, ergonomic, and psychosocial risks. Although Turkey demonstrates rapid economic growth, OHS practices have not been fully put into practice, and necessary attention has not been paid to the health industry. For this reason, this paper aims to assess risks for health staff, contribute for planning of health services, and enhance regulations. A case study was carried out in a leading hospital in Turkey using a two-stage fuzzy multi-criteria approach, which provides more consistency in decision-making process and gives an appropriate final rank of hazard types. Fuzzy Analytic Hierarchy Process (FAHP) is used in weighing five risk parameters, which are severity, occurrence, undetectability, sensitivity to maintenance non-execution, and sensitivity to personal protective equipment (PPE) non-utilization. The fuzzy VIKOR (FVIKOR) approach is then applied for prioritization of hazard types in each department of the hospital. On conclusion of the hazard control hierarchy, measures are overtaken for the hazards, and areas open for improvement are presented.
AtıfWoS97OpenAlex125İncele - MakaleYalnız künye2017Scopus SJRQ2Palaeoseismic history of the eastern part of the North Anatolian Fault (Erzincan, Turkey): Implications for the seismicity of the Yedisu seismic gap
Zabci, Cengiz; Akyüz, H. Serdar; Sançar, Taylan
The North Anatolian Fault showed a remarkable seismic activity especially between 1939 and 1999, when the westward migrating earthquake sequence created surface ruptures more than 1000 km, leaving unbroken only the Marmara segments, to the west, and the Yedisu Segment, to the east along the main strand of the fault. To understand the palaeoseismicity of the Yedisu Seismic Gap, we undertook trench investigations close to the village of Balaban SarA +/- kaya, on the western part of the Yedisu Segment. We found evidence for at least five surface faulting earthquakes, from which only two are correlated with the 18 July 1784 CE and 27 June 1583 CE historical events. Although the surface rupture of the 1784 CE was reported by other trench studies, the evidence of 1583 CE event is presented for the first time. In consideration with other historical earthquakes, affecting the region east of Erzincan, we suggest that this particular section of the North Anatolian Fault may be in a seismically quiescent period, following a cluster of earthquakes in its near history. In order to test this hypothesis, further studies are needed to increase our knowledge on the temporal and spatial seismic behaviour of the Yedisu Segment, which has potential to create an earthquake with M (w) similar to 7.2 in the near future.
AtıfWoS15OpenAlex23İncele - MakaleAçık Erişim2017Scopus SJRQ2Synthesis, thermal degradation and dielectric properties of poly[2-hydroxy,3-(1-naphthyloxy)propyl methacrylate]
Biryan, Fatih; Demirelli, Kadir; Torgut, Gulben; Pihtili, Guzin
2-Hydroxy-3-(1-naphthyloxy)propyl methacrylate (NOPMA) monomer was synthesized from reaction of 2-[(2-naphthyloxy)methyl]oxirane with methacrylic acid in the presence of pyridine. The polymerization of NOPMA was carried out by free radical polymerization method in the presence of AIBN at 60 A degrees C. The structure of monomer and polymer was characterized by H-1-NMR, C-13-NMR and FT-IR spectroscopy techniques. The glass transition temperature and average-molecular weights of poly(NOPMA) were measured using differential scanning calorimetry and gel permeation chromatography, respectively. The thermal degradation behavior of poly(NOPMA) has been investigated by FT-IR studies of the partially degraded polymer and thermogravimetry. The cold ring fractions (CRFs) were collected at two different temperatures, initially fraction-1 (CRF1) is from room temperature to 320 A degrees C, and the other fraction-2 (CRF2) is from 320 to 500 A degrees C. The volatile products of the degradation were trapped at -195 A degrees C (in liquid nitrogen). All the fractions were characterized by FT-IR, H-1 and C-13-NMR spectroscopic techniques, and the cold ring fractions (CRFs) were also characterized by GC-MS. For the degradation of polymer, the major compound between products of CRFs is alpha-naphthol. The GC-MS, FT-IR and NMR data showed that depolymerization corresponding to monomer was not prominent below 320 A degrees C in the thermal degradation of poly(NOPMA). The mode of thermal degradation containing formation of the major products was identified. The dielectric permittivity (epsilon'), the loss factor (epsilon aEuro(3)) and conductivity (sigma(ac)) were measured using a dielectric analyzer in the frequency range of 50 Hz to 20 kHz.
AtıfWoS17OpenAlex22İncele - MakaleYalnız künye2017FUZZY LOGIC BASED INDIRECT VECTOR CONTROL OF SQUIRREL CAGE INDUCTION MOTOR
Nur, Ahmet; Omaç, Zeki; Öksüztepe, Eyyup
Squirrel cage induction motors are widely used in industry. These induction motors need smart control applications for high performance. In this paper an indirect vector control of squirrel cage induction motor is modelled mathematically. The mathematical model is moved to simulation using Matlab/Simulink software. For improvement, the indirect vector control simulation is based on fuzzy logic. Eventually, the simulation results for fuzzy logic speed control of induction motor are obtained for different reference speeds. The results showed effectiveness of fuzzy control system for indirect vector control of squirrel cage induction motor simulation model.
- MakaleYalnız künye2017Scopus SJRQ1Examination of the Correlation Between Internet Addiction and Social Phobia in Adolescents
Yayan, Emriye Hilal; Arikan, Duygu; Saban, Fatma; Bas, Nazan Gurarslan; Özcan, Ozlem Ozel
This was a descriptive and cross-sectional study conducted with adolescents to examine the correlation between Internet addiction and social phobia. The population of the study consisted of 24,260 students aged between 11 and 15 years. Sampling method was used from population with known number, and 1,450 students were calculated as sample of the study. In this study, 13.7% of the adolescents had an Internet addiction, and 4.2% spent more than 5 hr on the computer every day. There was a positive correlation between Internet addiction and social phobia. The form of time spent on Internet was examined in terms of addiction and social phobia; although Internet addiction was related to games, dating sites, and web surfing, social phobia was related to homework, games, and web surfing. It was hypothesized that adolescents with social phobia were Internet addicts, and the participants used the Internet to spend time rather than socialize.
AtıfWoS25OpenAlex45İncele - MakaleAçık Erişim2017An Epidemiological Examination of Suicides That Have Occurred in Tunceli During 2005-2015
Günderci, Azad; Karatay, Gulnaz; Gökçe, Seher; Güler, Burcu
Objective: The study aims to investigate the phenomena in suicides and attempted suicides that have occurred in Tunceli during 2005-2015, with respect to certain characteristics. Method: The files for 435 suicides and attempted suicide incidents in total, which have been recorded in Tunceli during 2005-2015, have been examined in this paper. Results: The suicide incidents have been determined most frequently among individuals under 24 years of age. In the evaluation of the causes for suicide, unknown reasons (51.5%) have been followed by family problems (21.1%) and psychiatric disorders (18.2%). Drug intoxications, use of stabbing instruments and hanging methods have taken the top three ranks among the suicide methods. 91.3% of the incidents consisted of suicide attempts and 8.7% completed suicides. While the ratio of completed suicides has been determined to be meaningfully higher in males (7.1%), the ratio of attempted suicides has been determined to be higher in females (95.6%) (p<0.05). Furthermore, it has been determined that the suicide incidents were observed more frequently during the spring and summer seasons and more in urban zone. Conclusion: Our findings indicate that the causes of almost half of the suicide incidents in Tunceli are not known. The most important risk factors for suicide have been identified as young age, male gender, unemployment, urban life, impaired mental health and in-family problems. Further comprehensive studies are recommended as aimed to assess the suicide incidents in Tunceli and take protective measures for the risk factors.
AtıfWoS2OpenAlex6İncele - MakaleYalnız künye2017On Complex η-Einstein Normal Complex Contact Metric Manifolds
Vanli, Aysel Turgut; Unal, Inan
The aim of this paper is focusing on eta-Einstein geometry of normal complex contact metric manifolds. We give the definition of complex eta-Einstein normal complex contact metric manifolds. In addition, we study on concircular curvature tensor Z on a normal complex contact metric manifold which satisfy Z (U, X).Z = 0 and Z(V, X).Z = 0. Also, we prove that a projectively semi-symmetric normal complex contact metric manifold is complex eta-Einstein.
AtıfWoS3İncele - MakaleYalnız künye2017PROJECT MANAGEMENT IN HEALTHCARE: A CASE STUDY FOR PATIENT FLOW EVALUATION IN AN EMERGENCY ROOM USING FUZZY CPM AND FUZZY PERT
Gül, Muhammet; Güneri, Ali Fuat; Günes, Gizem
An ideal healthcare system is considered as a system that provides the most quality service level, lower costs and unlimited access. Any delay in patient flow may result in undesired consequences and losses in healthcare facilities such as hospitals and their sub units. Project management is defined as application of techniques to project activities to meet the project requirements. It has techniques that can help healthcare facilities and units standardize care and quality, reduce costs, improve effectiveness and decrease prolonged waits. The current study is carried out in an emergency department of a university hospital to understand the patient flow of the department with respect to the Fuzzy Critical Path Method (FCPM) and Fuzzy Program Evaluation Review Technique (FPERT). The reason for incorporating fuzzy sets is stemmed from that fuzzy numbers are more effective for high uncertainty processes as in emergency departments. Activities affecting patient flow through the ED are identified and project network is drawn. 1500 patients' data about the times of each activities are obtained from the observed ED. Findings through application of FCPM and FPERT, the expected time for completion of the project, the critical path and slack times are determined.
AtıfWoS2İncele - MakaleYalnız künye2017Scopus SJRQ1Evaluation of School of health students' ethics position in Turkey
Sen, Emine; Dal, Nursel Alp; Üstün, Cagatay; Okursoy, Algin
Background: The advances in science and technology increasingly lead to the appearance of ethical issues and to the complexity of care. Therefore, it is important to define the ethics position of students studying in health departments so that high quality patient care can be achieved. Objectives: The aim of this study was to examine the ethics position of the students at Shool of Health of an University in western Turkey. Methods: The study design was descriptive and cross-sectional. The study population included 540 first, second, third, and fourth year students from the Departments of Nursing, Midwifery, and Rescue and Disaster Management in the 2013-2014 academic year. Data were collected with a Personal Identification Form and The Ethics Position Questionnaire. Obtained data were analyzed with Chi-square test, Confirmatory Factor Analysis, and Nested Analysis of Variance. Ethical considerations: Before conducting the research, approval was obtained from Ege University Clinical Research Ethics Committee in Izmir and written informed consent was taken from all the participants. Findings: There was no significant difference in the mean scores for the Ethics Position Questionnaire between the students in terms of years and fields of study. Although the mean scores for the subscale idealism did not differ between fields of study, the mean scores significantly differed between years of study. However, the mean scores for the subscale relativism did not differ in terms of years and fields of study. Discussion: Whether students are idealistic or relativistic in terms of ethical judgment will be effective in ethical decision-making skills during patient care. Therefore, we need to define the factors that influence students' ethics position in the future. Conclusion: It is suggested that the courses and practices that teach students to be aware of their ethics position to create an ethical outlook can be placed in the curriculum in health schools.
AtıfWoS7OpenAlex9İncele - MakaleYalnız künye2017Scopus SJRQ3Synthesis and characterization of Bioglass-based bone grafts with Gelatine substitution for biomedical applications
Aksakal, B.; Demirel, M.
Background: Syntesizing alternative bone graft materials are important in biomedical applications. Their morphology, mechanical properties and cell viability plays an important role in tissue engineering. OBJECTIVE: Bioglass (B) based bone grafts with Gelatin (G) substitution were syntesized via the sol-gel method and were compared with various Gelatin and Bioglass concentrations (wt%). METHODS: Syntesized bone grafts were characterized by Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) to show the structural and morphological changes of the fabricated B-based bone grafts. RESULTS: It was demonstrated that the concentration of pore size increased with increasing amounts of Gelatin in wt%. The biograft-B40G20 produced the highest flexture strength and hardness. Increasing the pore size caused a decrease in hardness and flexture stress of B-based biografts. CONCLUSIONS: Cell viability tests were conducted on the fabricated biografts and it was shown that the cell viability increased in fabricated B-based bone grafts.
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İncele - MakaleAçık Erişim2017Scopus SJRQ1Application of AHP and VIKOR methods under interval type 2 fuzzy environment in maritime transportation
Soner, Omer; Celik, Erkan; Akyuz, Emre
The aim of this paper is to provide not only a hybrid theoretical methodology in multiple-attribute decision making problems but also a practical application in maritime transportation industry. The proposed hybrid approach integrates Analytic Hierarchy Process (AHP) method into VlseKriterijumska Optimizacijia I Kompromisno Resenje, (VIKOR) technique under interval type-2 fuzzy (IT2F) environment. While AHP and VIKOR provides a comprehensive framework to solve multiple-attribute decision making (MADM) problems in maritime transportation industry, the IT2F enables to deal with much uncertainty during linguistic assessment of decision-makers. The proposed approach is demonstrated with a hatch cover design selection problem since it has utmost importance in structure of bulk carrier ships to prevent water ingress and protect cargo form the external damages. Besides its robust theoretical insight, the paper has practical contribution to the naval engineers, classification societies and ship owners who have difficulty in deciding appropriate hatch cover type during construction of the ship.
AtıfScopus117WoS103OpenAlex122İncele - MakaleYayıncıda açık erişim2017Scopus SJRQ2The Native Symbols Engaging Turkish Players to Digital Games in a Playability Perspective
Aslan, Alper; Coban, Murat; Karakus Yilmaz, Turkan; Goktas, Yuksel
Background. The satisfaction of a player’s gaming experience has a great impact on their game preferences. The goal of this study was to investigate the opinions and experiences of Turkish players of computer games in order to examine the effects of native symbols on their game preferences. Method. The data collection tools were games developed in Turkey, websites for these games, user comments made on the video records of the games, online forums, and an open-ended questionnaire. Results. The results indicate that although native symbols from the players’ home society play a role in shaping the users’ playability perception, it cannot be argued that they change the game preferences. These results may be applied to computer games’ designs, development strategies, and advertising methods to attract all players.
AtıfScopus4WoS3OpenAlex3İncele - MakaleYalnız künye2017Scopus SJRQ3Box-Behnken design approach for optimizing removal of copper from wastewater using a novel and green adsorbent
Ince, Muharrem; Ince, Olcay Kaplan
The aim of the present research was to apply the Box-Behnken experimental design and response surface methodology for modeling of copper (Cu2+) ions from an industrial wastewater and leachate pretreated astragalus herbal plant. A three factor, three level Box-Behnken experimental design combined with response surface modeling (RSM) and quadratic programming (QP) was employed for maximizing Cu(ID removal from aqueous solution based on 17 different experimental data obtained in a batch experimental study. Three independent variables (pH ranging from 2.0 to 8.0, contact time from 10 to 180 minutes, and adsorbent amount from 0.1 to 1 g) were studied. The significance of the independent variables and their interactions were tested by means of the analysis of variance (ANOVA) with 95% confidence limits. The standardized effects of the independent variables and their interactions on the dependent variable were also investigated by preparing a Pareto chart. The optimum values of the selected variables were obtained by solving the quadratic regression model as well as by analyzing the response surface contour plots. Using the experimental conditions of pH = 5.0, contact time = 92.5 minutes, adsorbent dosage = 0.25 g, the recovery efficiency of Cu(II) was found to be 100%. Copper-free and copperloaded astragalus was analyzed using fourier transform infrared spectrometry (FTIR) which evidenced the functional groups involved in copper uptake. Adsorption equilibrium for copper was described by using the Freundlich and Langmiur adsorption isotherms. This adsorbent was applied to different industrial wastewater and leachate samples for copper removal.
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