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Öğe Factors affecting food waste awareness in Turkey. The case of Corum province(UNIV ALEXANDRU IOAN CUZA, CENTRUL STUDII EUROPENE, 2022) Karakaş, GüngörEvery year in the world, a significant amount of food is wasted at the consumption stage. Since food waste awareness is the determinant of food waste behaviours, the aim of this paper is to determine the effect of materialist values, personality, religious norm, food choice, food expenditure, recycling and environmental awareness on food waste awareness. Survey data were obtained from consumers in urban areas of Çorum in March, April and May 2019. Structural Equation Model was conducted to determine the factors affecting food waste awareness of consumers. According to the results of the path analysis, religious norms were influenced only by personality, while environmental awareness was influenced by food expenditure and recycling. Although recycling was positively affected by environmental awareness, food expenditure and food choice, it was negatively affected by materialist values. The most important way to reduce food waste is to raise environmental awareness. Consumers should be informed about the impact of recycling, food expenditures, materialistic values and food choice on the environment in order to increase environmental awareness of consumers.Öğe Halk Sağlığı Gözüyle Akıllı Telefon Bağımlılığı ve Ergenlik(2020) Daysal, Burcu; Yılmazel, GülaySmartphone addiction is a type of addiction using excessive and uncontrolled smartphones that harms the social relationships of users. Even though people in all ages use smart phones, the most adaptable ones are the Y and Z generations. This generation called “Y” generation born between 1977-1994 and consists of individuals who are intellectual and prone to technology. “Z” generation consists of individuals born in 1995 and after. In addition to being a functional piece that makes life easier, smartphones have become an object that negatively affects individuals’ physical and mental health due to their unconscious and excessive use. Physical problems include head, neck, back, and wrist pain while psychiatric problems include anxiety, depression, attention deficit, and decrease in social interaction, academic success and problems in business life. Adolescence is the most sensitive and vulnerable age group against technological dependencies. While adolescents experience developmental problems, they also have to cope with social, psychological and technological problems. Although it is known that smartphone addiction causes many physical and psychosocial problems in young people, sometimes the preexisting problems of young people can connect them to smartphones. Low academic success, sleep disorders, obesity, low self-esteem and depression are common problems among adolescents associated with smartphone addiction. Early diagnosis and intervention in primary care services for smartphone addiction may have a positive impact on both the health and quality of life of individuals. This study aims to focus on the problems of smartphone addiction during adolescence via a public health perspective.Öğe Synthesis, characterization and swelling performance of a temperature/pH-sensitive kappa-carrageenan graft copolymer(Elsevier, 2020) Geyik, Gülcan; Işıklan, NuranA binary graft copolymerization of dimethylaminoethyl methacrylate (DMAEMA) and acrylic acid (AA) onto kappa-carrageenan (CG) was performed by using microwave irradiation in the presence of 4A'-Azobis(4-cyanovaleric acid) (ACVA). The structure of the CG-g-P(DMAEMA/AA) copolymers was confirmed using C-13 NMR, MR, DSCTFGA and XRD. The effects of the DMAEMA/AA ratio, the microwave power and irradiation duration, and the concentrations of CG and ACVA on grafting yield and grafting efficiency were all investigated, and the best values of them were found to be 150% and 85%, respectively. The lower critical solution temperatures (LCST) for CG-g-P(DMAEMA/AA) copolymers at various pH conditions were determined, and when the pH value of the medium was increased from 12 to 10, the LCST of the copolymer decreased from 53 degrees C to 39 degrees C. Moreover, swelling performance of the copolymers under various pH conditions was examined, and it was observed that the swelling ratio of the copolymer increased with a decrease in the pH value of the medium. (C) 2020 Elsevier B.V. All rights reserved.Öğe pH/temperature-responsive poly(dimethylaminoethyl methacrylate) grafted kappa-carrageenan copolymer: Synthesis and physicochemical properties(Wiley, 2020) Geyik, Gülcan; Işıklan, Nurankappa-Carrageenan-graft-poly(dimethylaminoethyl methacrylate) (CRG-g-PDMA) was synthesized via free-radical copolymerization under microwave irradiation.C-13-Nuclear magnetic resonance spectroscopy (C-13-NMR), fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and X-ray diffraction (XRD) methods were used for characterization of the CRG-g-PDMA structure. The effect of reaction variables including the concentrations of the initiator and dimethylaminoethyl methacrylate (DMA) as well as the microwave irradiation time and power on graft ratio and conversion was investigated, and their highest values were obtained to be 179 and 76%, respectively. The lower critical solution temperatures (LCSTs) of the CRG-g-PDMA copolymers were determined at various pH conditions, and their value in distilled water was found as 47 degrees C. Besides, the swelling capacity of the copolymers under different pH levels was investigated and it was seen that the swelling capacity of the copolymer increased with the decrease in the pH value of the medium. The CRG-g-PDMA copolymer exhibited excellent swelling performance in acidic pH conditions and possessed responsiveness to pH and temperature stimuli.Öğe Meslek yüksekokulu öğrencilerinde günlük su tüketimi(Refik Saydam National Public Health Agency (RSNPHA), 2020) Daysal Güler, Burcu; Yılmazel, GülayObjective: This study was carried out to examine daily water consumption among vocational high school students. Methods: This study was conducted between May and July 2019 with the participation of 262 students training at a vocational high school of Hitit University. To collect the data a 32-item questionnaire including the socio-demographic characteristics, water consumption habits and some health behaviors was used. Data was evaluated via SPSS 21 program using percentage, average and chi-square test. In the analysis, p <0.05 value was considered statistically significant. Results: Of the study group 61.1% were between the 18-20 age group and 67.6% were women. While the proportion of those with a daily water consumption of eight glasses or more was 55% in the 18-20 age group, it was 65% for male students. Daily water consumption did not differ significantly in terms of students’ age groups and gender (respectively p= 0.272; p= 0.630). In the group, 54.4% stated that they slept less than eight hours a day and the ratio of students in this group with a daily water consumption of eight glasses and above was 61.7%. Daily water consumption did not differ significantly according to students’ daily sleep time (p=0.198). In the study, 53.1% stated that they never smoked / quit smoking, and the rate of those with sufficient daily water consumption was 63.3% and there was no significant difference between the groups (p= 0.069). The rate of those who stated that they met their daily liquid need from water was 54.2%, and in this group, the rate of those who had a daily water consumption of eight glasses and above was 73.3%. According to the sources of daily fluid needs, daily water consumption had shown a significant difference (p= 0.001). Daily water consumption did not differ significantly in terms of the frequency of fast food consumption (p= 0.089). Conclusion: Daily water consumption was low in vstudents. Sources of daily fluid intake was differ in terms of daily water consumption. Daily sources of fluid intake should be examined in young adults, strategies should be developed to encourage daily water intake, awareness training should be organized. © 2020, Turk Hijyen ve Deneysel Biyoloji Dergisi. All Rights Reserved.Öğe Design and fabrication of hybrid triple-responsive ?-carrageenan-based nanospheres for controlled drug delivery(Elsevier B.V., 2021) Geyik, Gülcan; Işıklan, NuranIn the last two decades, the utilization of magnetic nanospheres in intelligent polymeric structures have received increased attention of researchers in numerous biomedical applications. Here, hybrid nanostructured triple-responsive magnetic nanospheres (?-Car-g-P(AA/DMA)@Fe3O4) containing inorganic iron oxide core (Fe3O4) and organic graft copolymeric shell based on ?-carrageenan (?-Car) and poly(acrylic acid/dimethylaminoethyl methacrylate) (P(AA/DMA)) were synthesized by microwave induced co-precipitation technique. The structure, size, surface morphology, magnetic property and stability of synthesized ?-Car-g-P(AA/DMA)@Fe3O4 magnetic nanospheres were characterized using FTIR, UV, XRD, TEM, Zeta-sizer, and VSM. ?-Car-g-P(AA/DMA)@Fe3O4 nanospheres were loaded with 5-Fluorouracil (5-FU) as an antineoplastic drug, and their 5-FU release behavior was explored in diverse graft yields, pH values, temperatures and in the existence of an alternating magnetic field. The ?-Car-g-P(AA/DMA)@Fe3O4 nanospheres demonstrated pH-, thermo-, and magnetic field-responsive 5-FU release with good biocompatibility and excellent anticancer activity. In addition, 5-FU release under 50 mT magnetic field reached to 100% within 4 h. This work exhibits that hybrid nanospheres have a triple stimuli-responsive influence, which is of principal importance for the future design and application of multi-functional responsive platforms to develop externally stimulated release of active agents and their healthcare capability.
