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    Effects of breeder age and egg weight on morphological changes in the small intestine of chicks during the hatch window
    (Taylor & Francis Ltd, 2013) Yalcin, S.; Izzetoglu, G. T.; Aktas, A.
    1. The objective of the study was to investigate the effects of breeder age and egg weight on hatching performance and morphological changes in segments of the small intestine of broiler chicks during a 21 h hatch window.2. Eggs from Ross broiler breeder flocks aged 29 (young) and 48 weeks (old) were classified as light (LE) or heavy (HE) and incubated at the same conditions. At 475h of incubation, eggs were checked every 3h to determine time of external pipping and hatching. The first 42 chicks to emerge from each group were weighed and chick length was measured and 14 chicks from each group were sampled to collect residual yolk and intestine segments. The rest of chicks were placed back in the incubator and chick weight and length were measured individually at 9, 15 and 21h after chicks hatched. At the end of 21h, 14 chicks from each group were sampled again and the same procedure was followed.3. The HE chicks pipped and hatched later than LE, regardless of breeder age. From hatch to the end of the hatch window, chick weight, but not yolk-free chick weight, gradually reduced. Relative residual yolk weight of chicks from both egg weights was similar at hatch, however, yolk sac utilisation was higher for LE chicks during the 21 h post-hatch period. At hatch, jejunum and ileum villus development was very similar for HE and LE chicks but greater development was observed for villus area with an increase in the jejunum villus length, width and goblet cell numbers in HE chicks.4. The longest jejunum villus and the widest duodenum and jejunum villus were obtained for HE chicks from old breeders indicating that HE chicks from old breeders would have a greater surface area for nutrient absorption.
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    Prognostic factors affecting ipsilateral tumor recurrence and distant metastasis after breast-conserving surgery
    (Elsevier Sci Ltd, 2016) Aktas, A.; Yeniay, L.; Kapkac, M.; Yilmaz, R.
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    Road rage behaviours among road users in Turkey
    (Lund University Faculty of Engineering, 2023) Aktas, A.; Akgür, S.A.
    One of the human factors that decreases traffic safety is road rage behaviors. Many of the behaviors thought to be indicative of road rage are clearly intended to be aggressive. The purpose of this study was to examine the frequency of road rage incidents experienced by road users both as victims and perpetrators. Furthermore, the goal was to investigate the impact of various socio-demographic and other factors on road rage behaviors in the past year. The questionnaire was completed by 633 individuals who agreed to participate in the study and reside in Istanbul, Izmir, and Ankara. All of the participants were Turkish, aged 19–76 years (M = 37.84 years, SD = 10.10); 57.3% were females, and 42.7% were males. The survey application was started with ethical approval. Using the snowball sampling method, a survey link or paper pencil forms were distributed to participants. Participants were requested to fill out the questionnaire form including socio-demographic information and various forms of road rage. Data were analyzed using the chi-square test and binary logistic regression analysis. Using the SPSS 28 program, all data were statistically analyzed to a significance level of p < 0.05. According to our findings, low-level road rage is most common among road users. For perpetration, this rate is 43.6%, while for victimization it is 63.2%. Overall, the results of the analysis suggest that low or high-levels of road rage perpetration and victimization may be influenced by driving a vehicle, carrying a weapon and certain demographic factors like gender, age, education level, and marital status. Numerous factors interact to facilitate road rage’s emergence. In our study, various forms of road rage are significantly influenced by factors such as age, gender, education, marital status, driving a vehicle, carrying a weapon. We believe it is crucial to examine this issue from multiple perspectives. Additionally, programs for prevention and intervention that effectively reduce the prevalence of road rage incidents are critical. © 2023, Lund University Faculty of Engineering. All rights reserved.