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Koleksiyondaki öğeler
- MakaleYalnız künye2015Scopus SJRQ2Removal of Phosphate from Aqueous Solutions by Chemical- and Thermal-Modified Bentonite Clay
Tanyol, Mehtap; Yonten, Vahap; Demir, Veysel
The study investigated phosphate adsorption from aqueous solutions using chemical- and thermal-modified bentonite in batch system. The adsorbent was characterized by SEM, BET, and FTIR spectroscopy. Contact time, beginning phosphate concentration, pH of the solution, and the effects of the temperature on phosphate adsorption capacity were determined by a series of experimental studies. In a wide pH range (3-10), high phosphate removal yields were obtained (between 94.23 and 92.26 %), and with the increase in temperature (from 25 to 45 degrees C), phosphate removal increased. Langmuir and Freundlich isotherms were used to determine the sorption equilibrium, and the results demonstrated that equilibriumdata displayed better adjustment to Langmuir isotherm than the Freundlich isotherm. Phosphate sorption capacity, calculated using Langmuir equation, is 20.37 mg g(-1) at 45 degrees C temperature and pH 3. Mass transfer and kinetic models were applied to empirical findings to determine the mechanism of adsorption and the potential steps that control the reaction rate. Both external mass transfer and intra-particle diffusion played a significant role on the adsorption mechanism of phosphate, and adsorption kinetics followed the pseudo-second-order-type kinetic. Furthermore, thermodynamic parameters (Delta H degrees, Delta G degrees, Delta S degrees) which reveal that phosphate adsorption occur spontaneously and in endothermic nature were determined. The results of this study support that bentonite, which is found abundant in nature and modified as an inexpensive and effective adsorbent, could be used for phosphate removal from aqueous solutions.
AtıfWoS26OpenAlex27
İncele - MakaleAçık Erişim2016Scopus SJRQ2Correlations 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.
AtıfWoS12OpenAlex15İncele - MakaleYalnız künye2020Scopus SJRQ4Electrochemical behaviour of cross-linker glutaraldehyde as a receptor for carbaryl biosensor
Ipek, Yeliz
Glutaraldehyde (GA) is a famous cross-linker that is used for immobilization of enzyme or biologic material on electrochemical biosensor electrodes. It has an important role in pesticide biosensor studies. Because of the inhibitor effect of pesticides on acetylcholine esterase enzyme (AChE), it is generally immobilized on the electrode by cross-linking method. Glutaraldehyde is used as cross-linker agent to immobilize the enzyme on the electrode surface. Acetylcholine esterase activity is inhibited by pesticides or other neurotoxic compounds. This inhibition helps us to detect the pesticide residual. Although numerous electrochemical pesticide biosensors are based on generally the immobilization of the enzyme in the literature, an enzymeless biosensor based on GA has been developed in this study for the first time. Enzyme biosensors have high cost and needs special storage conditions. In this study, glutaraldehyde detected the carbaryl pesticide as sensitive as an acetylcholine esterase enzyme biosensor. The biosensor electrode was constructed with coating GA on glassy carbon electrode (GCE). Thus, it is a simple, low cost and practical method for pesticide detection in the water samples with low detection limit of 5x10(-9) mol L--(1).
AtıfWoS3İncele - MakaleAçık Erişim2026Analysis of buildings in Tunceli - Pülümür district with the Canadian seismic screening method
Gundogdu, Yunus Emre; Polat, Berivan Yilmazer
This study, which was conducted in the P & uuml;l & uuml;m & uuml;r district of Tunceli, was carried out in an area with high seismic risk due to the region's proximity to the Bing & ouml;l-Yedisu Fault. In the study, the earthquake safety of the existing building stock was assessed using visual inspection methods. In this context, 172 buildings in the P & uuml;l & uuml;m & uuml;r district of Tunceli province were examined in detail in terms of earthquake safety using the Canadian Seismic Screening Method. In the analysis, seismic safety levels of the buildings, structural and nonstructural risks were taken into consideration and seismic priority indexes (SPI) were determined. The results of the study revealed that a large portion of buildings in the P & uuml;l & uuml;m & uuml;r district carry different levels of risk of earthquake. Specifically, the evaluated building stock was entirely constructed before the critical year of 2007 and exhibits high seismic vulnerability. This critical threshold is technically attributed to two main regional factors: the design practices predating the 2007 Turkish Earthquake Code and the absence of ready-mixed concrete technology in Tunceli province prior to that year. Furthermore, based on the method's classification, it is suggested that buildings with a Seismic Priority Index (SPI) greater than 20, which indicates High to Very Hazardous risk levels, should be prioritized for detailed assessment and retrofitting, and that local governments should develop incentive policies for these mitigation efforts.
- MakaleYalnız künye2015REPRESENTATION OF 'THE OTHER' IN CARTOONS PUNKY AND LES BLAGUES DE TOTO
Kenes, Hatice Coban
It can be claimed that many cartoons of domestic and international origin such as Caillou, Conni, Niloya, Pepee, Canim Kardesim, Biz Ikimiz, Can, which are broadcast and re-broadcast in mainstream media, are constructed upon 'sterile' characters. The protagonists in these idealized cartoons are urban middle and upper class families. Mothers and fathers are attentive not only towards each other but also towards their children, with no difficulty in expressing their affection. Fights, problems and even insignificant disputes are non-existant and life continues free of any problems. On the other hand, not all spectators of these cartoons can be claimed to associate with this 'sterile' media environment presented. Children of different ethnic and religious origins; children who are disabled, handicapped, poor; children who have a single parent and/or raised in unhappy environments or in disquiet do not exist in such cartoons. Within this framework, this study problematizes the representation of 'other' children in the cartoons, which are products of popular culture which mediate the understanding of daily experiences and the 'other' by the spectators. In this context this study aims to reveal how the 'other' children are represented in cartoons entitled Punky and Les Blagues De Toto which fall beyond the scope of the ordinary narrative of mainstream cartoons and which constitute rare examples within the national media.
- MakaleAçık Erişim2016Scopus SJRQ2Adsorption 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.
AtıfWoS17OpenAlex21İncele - MakaleAçık Erişim2016Investigation 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.
AtıfWoS3OpenAlex3İncele - MakaleAçık Erişim2023Scopus SJRQ3Anthocyanin based sensory pad for determination of chicken meat spoilage
Ipek, Y.; Ertekin, O.
Production and consumption of chicken meat has increased considerably with the increasing world population, and will continue to increase, due to its health benefits and its economic value. Chicken meat is a sensitive food due to its characteristics and microbiological load. Traceability is very important to increase food safety and biosecurity. Freshness indicators are often used to monitor the presence of metabolites produced by microorganisms, mostly functioning through the colour change of the indicator. A developed natural, edible, biodegradable, purple coloured pH sensitive sensory pad was put inside a chicken meat package to observe the chicken meat spoilage with colour change due to pH changes in the meat.
AtıfWoS1OpenAlex1İncele - MakaleAçık Erişim2026Adoption of artificial intelligence-supported digital banking applications and their impact on customer loyalty
Cevher, M. F.; Önen, E.
The rationale of this paper is that AI-enabled digital banking applications enhance consumer experiences and customer relationships; however, holistic findings on the impact of these applications on customer satisfaction and loyalty, beyond their benefits and adoption, are limited. The study aims to reveal the impact of AI-powered digital banking applications on customer loyalty by examining consumer adoption, experience, and satisfaction levels. The theoretical basis is grounded in an integrated research model that correlates variables from the technology acceptance model and the expectation confirmation model. The data and research methods comprise 510 participants using AI-enabled banking applications in T & uuml;rkiye, employing a quantitative research design and an online survey technique. The data obtained were analysed using structural equation modelling (PLS-SEM). The findings indicate significant effects of perceived ease of use on perceived usefulness, as well as the relationship between perceived usefulness and confirmation on satisfaction. Furthermore, significant effects of satisfaction on continuance intention and continuance intention on customer loyalty were found. However, the direct effect of satisfaction on customer loyalty is not significant. This result suggests that satisfaction plays an indirect role in the formation of customer loyalty through continuance intention. Therefore, satisfaction and continuance intention are critical variables in strengthening customer loyalty in AI-enabled digital banking. Increasing customer satisfaction may not be sufficient for enhancing customer loyalty: banks must devise strategies to support customers' intentions to use applications regularly.
AtıfOpenAlex1İncele - DüzeltmeYalnız künye2017Scopus SJRQ1A food waste utilization study for removing lead(II) from drinks (vol 214, pg 637, 2017)
Ince, Olcay Kaplan; Ince, Muharrem; Yonten, Vahap; Goksu, Ali
- MakaleAçık Erişim2019Scopus SJRQ1Performance Evaluation of Using Evotherm in SBS Modified Binder
Kök, Baha Vural; Yilmaz, Mehmet; Akpolat, Mustafa
Recently, various types of additives are being used to enhance the properties of bitumen. Until now, few researchers have handled the utilization of different additives in the same binder. In this study, styrene-butadiene-styrene (SBS) and Evotherm were used both separately and in the same blend. Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were applied to SBS and Evotherm modified binders. SBS and Evotherm were added to pure bitumen in three different ratios. Sixteen different combinations were produced using the two additives, and a pure binder in the same binder was evaluated in the DSR test. Eight different combinations were evaluated in the BBR test. The conclusion reached was that the maximum usage of Evotherm (0.9%) induces a 20% reduction in the rutting parameter of both the 5% and 6% SBS modified binders. The 0.5% Evotherm with 4% and 5% SBS modification does not have an adverse effect on rutting performance. Evotherm modification could prevent the stiffness increment that originates from using the SBS additive, especially at high content. Using 0.7% Evotherm with 4% SBS can acquire the pure binder's low temperature performance. (c) 2019 American Society of Civil Engineers.
AtıfWoS11İncele - MakaleYalnız künye2010Scopus SJRQ3The Biochemical Parameters Having Economic Importance in Sheep and Fish Meats
Kayim, M.
In this study, 10 meat samples from fish (Trachurus trachurus L. 1758) and sheep (Akkaraman) were used. In the experiment, the used fish meat was a total body meat. However, the sheep longissimus muscle (lean) from 6th rib cut was sampled for determination of chemical components. The concentrations of total fat were lower (p < 0.01) for fish than sheep. However, the concentrations of pH were also lower (p < 0.05) for sheep material. There were no effects of animal species on the moisture concentrations. The rates of ash were lower (p < 0.01) for sheep group. The pH concentrations close to neutral in meat from fish may be advantage for eating quality. However, this pH level is disadvantage for shelf life of product. However, the high amounts of fat in the sheep meats may have a negative effect upon consumer's preference and health.
- Kitap BölümüYalnız künye2022A Fanonian Reading of The Black Album by Hanif Kureishi
Hamarat, Abdulkadir
- MakaleAçık Erişim2023THE LONG TERM IMPACT OF DEPOSIT DOLLARIZATION ON STOCK MARKETS IN MIST ECONOMIES
Sahabi, Ahmet Melik; Sari, Sacit; Aslan, Mesut
With the globalization and financial liberalization, deposit dollarization and increasing use of foreign currency deposits by households and firms have garnered significant attention and become an important subject in recent years. In this study, we tried to uncover the relationship between deposit dollarization, which is a form of financial dollarization, and stock market in MIST economies for the period between 2003Q1 and 2022Q2. With the help of second- generation methods of panel econometrics, we have identified a significant, adverse long-term influence of deposit dollarization on stock markets. This outcome has been substantiated through the utilization of three distinct estimation methodologies. Moreover, our Granger non-causality test demonstrates the presence of a causal relationship emanating from deposit dollarization to the stock market.
AtıfOpenAlex1
İncele - MakaleYalnız künye2026Scopus SJRQ2From assistance to dependence: The nexus between AI dependence and workplace cognitive engagement
Uyan, Umut; Ibin, Adil
Background The increasing integration of artificial intelligence (AI) tools into workplace practices has reshaped how employees process information and perform cognitive tasks. While these systems are often associated with superior efficiency, their excessive use may entail significant cognitive costs. Objective Grounded in automation complacency perspective and the growing literature on technology addiction, this study investigates how dependence on artificial intelligence is associated with cognitive engagement in the workplace, with particular attention to the mediating role of cognitive fatigue. Methods Adopting quantitative research design, data were collected from 246 academic and administrative staff who actively use AI tools in their daily work routines. Partial Least Squares Structural Equation Modeling (PLS-SEM) was used to test the theoretical model proposed. Results The findings indicate that dependence on AI was positively associated with cognitive fatigue (beta = 0.569; t = 13.468; p = 0.000) and negatively with cognitive engagement (beta = -0.174; t = 2.503; p = 0.012). In addition, the relationship between cognitive fatigue and cognitive engagement was found to be negative and statistically significant (beta = -0.207; t = 2.773; p = 0.006). Mediation analysis further revealed that cognitive fatigue partially mediates the relationship between dependence on AI and cognitive engagement (indirect effect beta = -0.118, t = 2.724, p < .01; VAF = 40.5%). Conclusion These results suggest that higher levels of dependence on AI correspond to higher employee cognitive fatigue, which in turn relates to lower cognitive engagement at work. By empirically demonstrating the cognitive costs of AI reliance, this study contributes to the emerging literature on workplace AI and technology addiction.
- MakaleAçık Erişim2026Scopus SJRQ1Upcycling Agricultural Biomass into Functional Bio-Oils through Pyrolysis: Toward Sustainable Rejuvenation of Asphalt Binder
Furtana Yalcin, Beyza; Yilmaz, Mehmet; Yalçin, Erkut; Vural Kok, Baha
This study investigates the feasibility of utilizing bio-oils derived from agricultural waste materials (such as straw, olive pomace, and pine cones) as rejuvenating additives in reclaimed asphalt pavement (RAP) containing bituminous mixtures, offering a sustainable and environmentally friendly approach in asphalt technology. The primary objective of the study is to enhance the physical and mechanical properties of aged binders using ecofriendly alternatives, thereby developing high-performance asphalt mixtures without harming the environment. The bio-oils, produced through pyrolysis, were evaluated in comparison with two commercial rejuvenators. Key performance criteria, including Marshall stability, moisture damage resistance (TSR), indirect tensile stiffness modulus (ITSM), and fatigue life, were tested. The results indicate that natural rejuvenators not only soften the aged binder but also effectively balance the flexibility, strength, and deformation resistance of the mixture. Notably, straw oil exhibited superior performance in terms of both high stability and extended fatigue life, while olive pomace oil demonstrated remarkable success in moisture resistance. Although commercial additives were effective to a certain extent, they failed to achieve the same level of structural compatibility and sustainability provided by natural bio-oils. In this regard, the study provides strong evidence that agricultural biomass waste can serve as a value-added solution in asphalt pavements, in alignment with the principles of the circular economy. In conclusion revealed that mixtures containing 75% RAP rejuvenated with straw oil achieved 11% higher Marshall stability and up to 14.5 times longer fatigue life compared to virgin mixtures, while olive pomace oil-based mixtures reached a TSR value of 81.5%, demonstrating superior moisture resistance.
- BildiriYalnız künye2017New Complex and Hyperbolic Function Solutions to the Generalized Double Combined Sinh-Cosh-Gordon Equation
Baskonus, Haci Mehmet
In this study, we have applied the improved Bernoulli sub-equation function method to the generalized double combined Sinh-Cosh-Gordon equation. This method gives new analytical solutions such as complex and hyperbolic function solutions to the problem considered in this paper. Then, we plot the three and two dimensional surfaces of analytical solutions by using Wolfram Mathematica
AtıfWoS42OpenAlex48İncele - BildiriYalnız künye2019An Intrusion Detection System Using Apache Log Files
Ince, Cemile; Omaç, Zeki
Today, thousands of systems are exposed to attacks every day. For this reason, many studies have been done in this area. These studies, using data mining (VM) and machine learning techniques, are trying to determine the intrusion detection by examining the log files in different OSI layers. These studies generally use standard data sets and propose hybrid systems to increase the success rate. In this study, an attack detection system (STS) has been developed by using Inonu University web page log files. The log files used as a data set consist of more than 35 million requests and a total of 326 attacks. As a result, the system was trained using artificial neural network (ANN) and attacks were detected with 99.3% success.
- MakaleYalnız künye2021Scopus SJRQ2Palaeoseismic behaviour of strike-slip faults in slowly deforming regions: palaeoearthquakes and long-term slip history of the Ovacik Fault (eastern Turkey)
Yazici, Muge; Zabci, Cengiz; Natal'in, Boris A.; Sançar, Taylan; Akyuz, H. Serdar
The Ovacik Fault (OF) is one of the internal structures of the Anatolian Block, located close to its eastern boundary. Although it shows a very clear surface trace, there are no instrumentally recorded surface rupturing earthquakes on this fault. This study concludes results of the first palaeoseismological trench study on the OF with the evidence for three surface rupturing earthquakes for the last 6 kyr. Structural, stratigraphical and geochronological constraints show that the oldest event happened between 4700 and 3022 BCE, whereas the penultimate event was between 2262 and 1643 BCE. The youngest event happened after 56 BCE, which we could only delimit from below because of the absence of any dateable material from the upper layers of the relevant horizons. The derived mean interevent time of these three palaeoevents is 2400 +/- 765 years. We could not correlate any of these palaeoevents with historical earthquakes due to the absence of records in catalogues for the region of interest. Moreover, we used cumulative offsets of the major drainages to calculate the long-term slip rate of 2.7 mm/year since the Pliocene, which exceeds slip rates of other internal faults of Anatolia almost by the factor of two. Our results do not only show significant deformation for the internal parts of Anatolia but also point out a seismic potential of the OF.
AtıfWoS5OpenAlex5İncele - MakaleYalnız künye2021Analysis of Studies on Motor Development Test and Physical Measurements in Pre-School Children between 2009-2019
Özcan, Ecesu; Güllü, Mehmet
Aims: The purpose of the present study is to conduct the content analysis of the international articles focused on the tests and physical measurements of the motor development of pre-school children and thus, to determine the trends in these articles between 2009-2019. Method: The articles were subjected to content analysis to analyse the articles to cover the descriptive information about the identity of the articles, the topic and publication year of the articles, methods and data collection tools, samples and data analysis methods used in the articles and discussion and results and suggestions sections of the articles. The collected data were interpreted on the basis of percentages and frequencies presented in tables and graphs. Results: According to the analysis of the data, the highest number of publications has been made on the applications physical activity programs. In the studies, the most frequently used data collection tools are physical measurements (motor test, anthropometric tests etc.). The motor tests and physical measurements were found to be the accelerometer. Conclusions: As a result, the research findings have drawn attention to the preference of physical activity program applications in preschool children, the intensity of studies for the 3-5 age group and the intensity of the accelerometer data collection tool.
