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      • Regional climate simulations and future projections by COSMO-CLM in Istanbul

        Cemre Yoruk Sonuc,Yurdanur Unal,Selahattin Incecik 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10

        Climate change can affect human health by making our air less healthy to breathe. Atmospheric warming associated with climate change has the potential to increase surface ozone levels, particularly in mid-latitude regions of the world. Rising ozone levels cause serious health problems, especially in summer, and may pose difficulties in complying with ozone air quality standards in the future. The study aims to investigate the ability of the COSMO-CLM model to reproduce the climate characteristics over Turkey and northwest of the country and emphasizing Istanbul to evaluate the projections of the regional climate model by determining the future changes in the temperature and precipitation variables. This study examines the present (1991-2005) and high-resolution climate projections for (2041-60) and (2071-90) over Istanbul and its surrounding areas at a spatial resolution of 0.0275o (2.8 km), employing the IPCC RCP 8.5 emission scenario by the COSMO-CLM_5.0 regional climate model forced by the earth system model MPI-ESM-LR. The performance of the model was validated by comparing simulation results to the observations. Climate projections show significant warming expected over the whole area in the period of 2041-2060 and especially in 2071-2090. Warming over Istanbul is around 1.25°C in the first period but, significantly higher in the case of the second period, which reaches up to 3.0°C. With the effect of Marmara at the south and the Black Sea on the north, warming increases in the coastline are higher than in the inner parts of the city. Moreover, in the spring and summer seasons, the north of Istanbul warms up more slowly than the south, the difference in the rate of temperature increase is expected to be more pronounced in the summer season. An increase in summer temperatures is expected especially in the southern coastal parts of the city. This will lead to an increase in ozone levels with the effect of land-sea breeze circulations. A significant reduction in precipitation is particularly evident at the end of the century over Istanbul. It is expected that the greatest decrease will occur in the spring season in both periods. The decrease in precipitation will lead to an increase in particulate pollution caused by Saharan dust transport, which affects Istanbul, especially in the spring season.

      • KCI등재

        Effect of nutrition education received by teachers on primary school students’ nutrition knowledge

        Cemre Elmas,Perihan Arslan 한국영양학회 2020 Nutrition Research and Practice Vol.14 No.5

        BACKGROUND/OBJECTIVES: The aim of this study was to assess the effect of nutrition education received by fourth- and fifth-grade teachers in state schools in Famagusta, Northern Cyprus, on their students. SUBJECTS/METHODS: The aim of this study is to assess the effect of nutrition education received by fourth- and fifth-grade teachers (n = 27) in state schools in Famagusta on their students. Participants (n = 718) were selected through a regional pilot scheme. The teachers were instructed on nutrition by the researcher and provided with a researcher-prepared nutrition education book “I Am Learning about Healthy Nutrition”. Before receiving their nutrition education, the teachers were pretested to assess their baseline nutrition knowledge. Following receipt of their nutrition education, a posttest, which included the same questions as those in the pretest, was administered to the teachers to assess the effectiveness of the training session. Similarly, students were asked pretest researcher-prepared questions to evaluate their baseline nutrition knowledge level. The teachers were then given a period of three to four weeks to instruct the students in nutrition education. Following this instructional period, a posttest that included the same questions as those in the pretest was administered to the students. RESULTS: The results showed that there were significant differences between the pre- and posttest scores of both teachers and students; in both groups, the nutrition knowledge level increased (P < 0.05). CONCLUSIONS: These results show that the provision of nutrition education training to teachers positively affected the nutrition knowledge level of both teachers and students.

      • KCI등재

        Methylphenidate-induced Exacerbation of Chorea in a Child Resolved with Switching to Atomoxetine

        Ozalp Ekinci,Cemre Yaşöz,Selin Ayşe İpek Baş,Nazan Ekinci,Özge İpek Doğan 대한정신약물학회 2020 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.18 No.2

        Choreiform movements have been reported with stimulant medications, especially in adults. There is only limited evidence on the management of such reactions in children with attention deficit hyperactivity disorder. Hereby, we present the exacerbation of chorea with long-acting methylphenidate use in a 6-year-old child with acute rheumatic fever which resolved with switching to atomoxetine.

      • KCI등재

        Performance Properties of Plain Knitted Fabrics Made from Open End Recycled Acrylic Yarn with the Effects of Covered and PBT Elastic Yarns

        Ahu Demiroz Gun,Cemre Nur Kuyucak 한국섬유공학회 2022 Fibers and polymers Vol.23 No.1

        In this research, the performance properties of plain knitted fabrics made from open end recycled and virgin acrylicyarns are comparatively investigated, together with the effects of added covered and PBT elastic yarns. The previous studiesabout the recycling of textile wastes and their usage were mainly focussed on waste type including cotton fibre. Althoughacrylic textile wastes constitute one of the most common recycled waste types after cotton wastes, there have been no studieson the usage of this type of waste as a fabric form in the literature. The recycled acrylic yarn is spun from 100 % acrylic fibrewastes subjected to mechanical recycling process of garneting. Covered and PBT elastic yarns are incorporated to give anadded value to the recycled acrylic fabrics. The experimental and statistical results reveal that the fibre type (acrylic wastefibre and virgin acrylic fibre) and the elastic yarn state (addition and type) parameters affect all the performance properties ofthe fabrics significantly. The recycled acrylic fabrics exhibit higher thickness, pilling tendency, abrasion resistance andcoursewise extension results and lower bursting strength results than the corresponding virgin acrylic fabrics. As far as theelastic yarn state is considered, it is observed that the fabrics with the covered yarn reveal the highest stitch density, mass,thickness and walewise extension results, followed by the fabrics with the PBT yarn. The highest bursting strength and thelowest pilling tendency results are obtained for the fabrics with the PBT yarn. Addition of the elastic yarn improves theabrasion resistance of the recycled and virgin acrylic fabrics. No statistically significant difference is found between theabrasion results of the recycled acrylic fabrics with the covered yarn and the PBT yarn.

      • KCI등재

        Thermo-physiological Comfort Performance of Recycled Plain Knitted Fabrics Produced from Acrylic Waste Fiber with the Effects of Incorporated Covered and PBT Elastic Yarns

        Ahu Demiroz Gun,Cemre Nur Kuyucak 한국섬유공학회 2022 Fibers and polymers Vol.23 No.9

        The objective of this work is to evaluate the thermo-physiological comfort performance properties of the recycledacrylic plain knitted fabrics produced from recycled open end yarn including acrylic waste fiber in comparison with those ofequivalent virgin acrylic counterparts, considering the effects of incorporated covered and PBT elastic yarns. Acrylic fiber ischaracterized by possessing wool-like handle and thermal comfort characteristics, which makes acrylic waste fiber goodcandidate for sweater-like knitted fabric applications worn in cold weather conditions. Covered polyester/lycra and PBTelastic yarns are included into the study to give added value to the recycled fabrics. Comparing the thermo-physiologicalproperties of the recycled and virgin acrylic fabrics, it is observed that in the recycled acrylic fabrics, thermal conductivityand thermal absorptivity are found to be lower, whereas thermal resistance is higher. These thermal values make recycledacrylic fabrics appropriate for cold weather. Regarding to elastic yarn state, the addition of either the covered yarn or the PBTyarn leads to increase in the thermal conductivity, thermal resistance and thermal absorptivity properties and the covered yarntends to affect the thermal parameters more than the PBT yarn. The lowest air permeability and water vapor permeabilityresults are achieved for the fabrics with the covered yarn.

      • KCI등재

        Antibacterial Bilayered Skin Patches Made of HPMA and Quaternary Poly(4-vinyl pyridine)

        İ. Alper İşoğlu,Cemre Demirkan,Mine Gül Şeker,Kadriye Tuzlakoğlu,Sevil Dinçer İşoğlu 한국섬유공학회 2018 Fibers and polymers Vol.19 No.11

        This study aimed to produce poly(4-vinyl pyridine) and hydroxypropyl methacrylamide (HPMA)-based bilayer wound dressings materials enhancing healing mechanism for the wounds which have self-healing problem and high infection risk. These materials were designed to protect wound from secondary traumas caused microorganism invasion and do not have toxic substance release problem. Synthesis of quaternary poly(4-vinyl pyridine) (poly(Q4-VP)) which is the antibacterial layer of wound dressing material was carried out in two stages. At first stage, poly(4-vinyl pyridine) polymer was synthesized from 4-vinyl pyridine monomer by free radical polymerization. Then, poly(Q4-VP) was synthesized from poly(4-VP) by alkylation reaction with 6-bromocaproic acid. Resulted polymer was structurally characterized by FT-IR. The macroporous spongy structure, as the lower layer of wound dressing material, was prepared by cryogelation of HPMA. Then, the antibacterial polymer was electrospun onto the cryogel structure and bilayered material was obtained. Cryogel structure, fiber morphology and layer integration was examined by SEM. In order to enhance wound healing process, ascorbic acid (vitamin C) was loaded to cryogel layer and release was followed by spectrophotometrically. The antimicrobial properties of the materials were examined against Escherichia coli, Staphylococcus aureus and Candida albicans, respectively. According to the results, bilayered, antibacterial and antifungal against Staphylococcus aureus and Candida albicans, temporary wound dressings which can stimulate wound healing and have high swelling capacity were obtained successfully.

      • KCI등재

        Fashion consumption during economic crisis: Emerging practices and feelings of consumers

        Zeynep Ozdamar Ertekin,Bengu Sevil Oflac,Cemre Serbetcioglu 한국마케팅과학회 2020 Journal of Global Fashion Marketing Vol.11 No.3

        Economic crisis has a significant impact on consumption practices and the way consumers justify their consumption patterns. Particularly in the field of fashion, consumers face a conflict between desire to consume due to rapidly changing fashion trends and coping with the decrease in purchasing power due to the economic crisis. Semi-structured interviews were carried out to gain a deeper understanding of how the economic crisis affects consumers’ fashion consumption behavior and the alternative consumption practices that emerge. The research further sheds light on the underlying feelings involved due to changes in consumption patterns. Some of the themes that emerge—reuse, reduce, and reject—are in line with earlier findings on anti-consumption but this time the motives of the consumers are non-voluntary. The findings also contribute to anti-consumption literature by introducing three new themes: refind alternative channels, reconsider, and rely on discounts. The study further shows that there are both positive and negative feelings associated with changes in consumption behavior due to economic crisis. Along with understanding the adaptations in consumption behavior, anticipating these conflicting emotions resulting from crisis related anti-consumption is important for marketers and retailers who are concerned about developing appropriate responsive strategies.

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