Browsing by Author "Aydin, Ibrahim"

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Consumers' Foresight for the Digital Turkish Lira: an Empirical Study
(Palgrave Macmillan Ltd, 2024) Aydin, Ibrahim; Celik, Zubeyir; Yigenoglu, Kaan; Cesur, Ayhan
This study aims to explain consumers' attitudes toward digital currency and their intention to use it with perceived trust, risk, usefulness, and ease of use. Data were obtained from 801 people through an online survey. Structural equation modeling and Process Macro were run to analyze the obtained data statistically. According to the statistical analysis results, while the trust factor affects the risk negatively, it positively affects the usefulness and attitude. Usefulness and risk have mediating role in the effect of trust on attitude. In addition, although the effect of usefulness on attitude is significant, the effect of risk on attitude is not significant. Attitude affects the intention to use it. Ease of use has a moderating role in this effect. At low, medium, and high values of ease of use, the attitude has conditional effects on the intention to use. Although there are many international studies on the adoption and use of digital currencies, few studies investigate the predictions of consumers' digital currency use in developing countries. This study contributes to the literature by raising awareness about digital currencies in developing countries. This study also fills an important gap in monitoring consumers' predictions about digital currency use in developing countries. In the context of the digital currency issue and the theoretical background of this study, it was seen that the variables evaluated in this study were not evaluated together in previous studies. It has been successfully explained that the original research model of this study has structural validity. As a result, the relationship between the variables was successfully explained.
High Prevalence of Chronic Hepatitis D Virus Infection in Eastern Turkey: Urbanization of the Disease
(Termedia Publishing House Ltd, 2016) Dulger, Ahmet Cumhur; Suvak, Burak; Gonullu, Hayriye; Gonullu, Edip; Gultepe, Bilge; Aydin, Ibrahim; Olmezi, Sehmus
Introduction: Both hepatitis B virus (HBV) and hepatitis D virus (HDV) infection play an increasingly important role in liver diseases. The main objective of this study was to investigate the socio-epidemiological, laboratory and radiological aspects of both HBV and HDV infection near the Iranian border of Turkey. Material and methods: The study included 3352 patients with HBV and HDV infection. Socioepidemiological, laboratory and radiological aspects of the study subjects were retrospectively examined. Comorbid metabolic diseases were not assessed due to the retrospective design of the study. Results: Most of the study subjects were HBe antigen negative. No significant difference in terms of HBV-DNA levels or HBe antigen seropositivity was detected between the city centre and rural areas (p > 0.005). The mean HBV-DNA level in the anti-HDV-positive group was significantly lower than in the anti-HDV-negative group (p < 0.001). The rate of HDV-RNA positivity in women was higher than in their male counterparts (p = 0.017). Anti-HDV-IgG was detected in 18.4% of tested subjects who came from an urban area. In contrast, 12.5% of subjects of the rural group had a positive result for anti-HDV-IgG. Among 134 ultrasonographically evaluated delta hepatitis patients, 37.3% had liver cirrhosis. On the other hand, in 1244 patients with hepatitis B monoinfection, there were 90 patients with liver cirrhosis. Radiologically, the rate of hepatic steatosis in delta hepatitis patients was lower than in those with HBV monoinfection. Conclusions: Hepatitis D virus infection was particularly prevalent among the urban population as well as in female subjects. More broadly, the current observations are the first to suggest an inverse correlation between delta hepatitis and ultrasonography-proven hepatic steatosis.
A Novel Polymerase Chain Reaction To Detect Brucella Canis in Dogs
(Kafkas Univ, veteriner Fakultesi dergisi, 2015) Aras, Zeki; Taspinar, Mehmet; Aydin, Ibrahim
In this study, the specific polymerase chain reaction has been standardized and evaluated for the direct diagnosis of Brucella canis in vaginal swab samples from dogs. The specific primer sets are directed to the 16S-23S rRNA inter-space region of Brucella spp. and the deletion of 351 bp in BMEI1426-BMEI1427 in B. canis. A total of 21 references and field strains and 35 vaginal swab samples were used for the evaluation of the polymerase chain reaction. It found that polymerase chain reaction is positive for B. canis DNA indicated by only amplification of 214 bp product. It detected at least 2.7 x 10(1) CFU/g of bacteria diluted in vaginal swab samples indicates that the polymerase chain reaction can be used as a practical alternative for bacterial isolation. The novel polymerase chain reaction provides a simple and rapid for the detection of B. canis in clinical and field samples in one step and in short time about 24 h.
Ultrasonographic Evaluation of Age Related Influence on the Teat Canal and the Effect of This Influence on Milk Yield in Brown Swiss Cows
(Natl veterinary Research inst, 2008) Celik, Haci Ahmet; Aydin, Ibrahim; Colak, Mehmet; Sendag, Sait; Dinc, Dursun Ali
A total of 400 teat canals were investigated with a linear array ultrasound probe. The teat canal was observed as a hyperechogenic line at the tip of the teat. Twenty percent of the examined teat canals showed a crooked course, whereas in 80%, a linear course was observed. There was no statistically significant difference among teats of crooked teat canal and lateral aspects of teats. The mean length of teat canal was found to be 1 1.51 +/- 0.01 min. It was demonstrated that the length of the teat canal and milk yield were affected by the animals' age. The teat canals were the shortest in young cows and these cows showed the highest milk yield. On the other hand, older cows with the longest teat canals showed the least milk yield. It was concluded that the ultrasonographic examination was effective in teat canal imaging and morphological assessment. The observation of the location of the canal within teats and its course was essential.