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    Dijital oyun bağımlılığının ciddi boş zaman faaliyeti perspektifinden incelenmesi
    (Selçuk Üniversitesi, 11.12.2023) Bayrak, Ali; Demirel, Mehmet; Demirel, Duygu Harmandal
    Literatürde yapılan çalışmalar incelendiğinde dijital oyunların bilinçli olarak tüketildiği zaman faydalı olabileceği ve kişinin bazı duyusal özelliklerini geliştirebileceği yönünde tartışmalar mevcuttur. Bu noktadan hareketle tasarlanan bu çalışmanın amacı serbest zamanlarda dijital oyun oynayan üniversite öğrencilerinin dijital oyun bağımlılıkları ile ciddi boş zaman faaliyetleri arasındaki ilişkinin incelenmesidir. Araştırmada betimsel tarama modeli kullanılmıştır. Araştırmanın evrenini üniversite öğrencileri oluşturmaktadır. Araştırmanın örneklem grubu olarak Necmettin Erbakan Üniversitesi seçilmiştir. Araştırmanın örneklemini basit tesadüfi örnekleme yöntemiyle belirlenen 222 kişi oluşturmaktadır. Toplanan veriler Jamovi programı ile analiz edilmiştir. Verilerin çarpıklık ve basıklık değerlerine bakılmış, verilerin parametrik dağılım gösterdiği tespit edilmiştir. Bu doğrultuda ANOVA ve T-testi yapılmış, anlamlı farklılıkların yönünün tespiti için ise Tukey HSD çoklu karşılaştırma testi yapılmıştır. Araştırmada elde edilen bulgulara göre yaş, cinsiyet, rekreatif etkinliklere katılım şekli ve oyun oynama sıklığı değişkenlerine göre dijital oyun bağımlılığının ve ciddi boş zaman ölçeklerinin arasında anlamlı farklılıklar olduğu tespit edilmiştir. Sonuç olarak, ciddi boş zaman ve dijital oyun bağımlılığı arasında pozitif yönde ve anlamlı bir ilişki tespit edilmiştir (p=0.05).
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    THE EFFECT OF DIFFERENT MANURES AND SYNTHETIC FERTILIZER ON BIOCHEMICAL AND ANTIMICROBIAL PROPERTIES OF MENTHA PIPERITA L
    (WILEY, 2014) Ozbucak, Tugba Bayrak; Erturk, Omer; Yildiz, Oktay; Bayrak, Ali; Kara, Meryem; Sahin, Huseyin; Kiralan, Mustafa
    The study was designed to examine the effects of different manures (fish, pigeon and cow) and synthetic fertilizer (nitrogen) on some biochemical activities of Mentha piperita L. (mint, peppermint). Seventeen different phenolic constituents and 19 essential oils were determined in M. piperita samples. While caffeic, gallic, ferulic, protocatechuic, syringic, o-coumaric acids and rutin were detected as common phenolics; carvone, limonene and 1.8-cineol were identified as major essential oil components in all mints. Total phenolic compounds, ferric reducing antioxidant power and cupric (III) reducing capacity (CUPRAC) tests were used to evaluate antioxidant capacities of the mints. The highest total phenolic compound (4.8 mg gallic acid equivalents/100 g) and antioxidant capacity (971 mM Fe(II)/mg; 823 mM Trolox /100 g) were observed in mints fertilized with pigeon manure. Mint samples also had different antimicrobial activities against the studied microorganisms (eight bacteria and two fungi), especially Escherichia coli and Listeria monocytogenes.
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    Encapsulation of clove essential oil in hydroxypropyl beta-cyclodextrin for characterization, controlled release, and antioxidant activity
    (WILEY, 2017) Babaoglu, Humeyra Cetin; Bayrak, Ali; Ozdemir, Necla; Ozgun, Nuriye
    The aim of this study was to investigate the physicochemical characteristics, release behavior, and antioxidant activity of clove essential oil-hydroxypropyl beta-cyclodextrin (CEO-HPCD) inclusion complexes. Clove essential oil was encapsulated by the kneading method with hydroxypropyl beta-cyclodextrin in a 1:1 molecular ratio. The entrapment efficiency of the encapsulated particles was 97.04%1.57. The average particle size was 165.87 +/- 1.65 nm and polydispersity index was .25 +/-.03. In vitro release profile of CEO-HPCD inclusion complexes indicated slow and sustained release. DPPH scavenging activity of free clove essential oil and encapsulated particles was 25.20%+/- 1.02 and 28.70%+/-.77, respectively. Total phenolic content of free clove essential oil was 18.59 +/- 1.60 mg GAE/100 mg oil while total phenolic content of particles was 22.57 +/- 1.48 mg GAE/100 mg oil. The results of the study revealed that using hydroxypropyl beta-cyclodextrin to encapsulate clove essential oil can be beneficial for the food and pharmaceutical industries. Practical applicationsClove essential oil has many biological activities due to its major compound eugenol. Choosing the appropriate method is a significant step for keeping active constituents. Encapsulation that is a beneficial process to control of the bioactive components can prevent degradation and loss of active compounds and prolong the shelf life of entrapped materials. This study can lead to use kneading method which is a low cost and easy encapsulation technique, for conservation of volatile active components, so these compounds can be used more intensely in the form of powder.
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    Investigation of the Relationship Between Recreational Spor Well-Being and Leisure Satisfaction of University Community Members
    (Selçuk Üniversitesi, 2023 Aralık) Aksu, Hasan Suat; Kaya, Alper; Bayrak, Ali; Tükel, Yalçın; Bozoğlu, Mustafa Sabır
    Sports has an important meaning in human life. Acquiring this meaning attached to sports is possible by devoting serious time. Recreational activities are known to improve health, but it is assumed that this health will also make leisure time more enjoyable. Accordingly, the purpose of this relational survey research is to evaluate the link between university community members' pleasure with their leisure time and recreational well-being. The research employed descriptive scanning methodology. In the study, "Recreational Sports Well-Being Scale" and "Leisure Satisfaction Scale" were used to determine the recreational sports well-being and leisure satisfaction levels of the participants. The universe of the research is "Selçuk University Student Communities". A total of 298 people were included in the research.The results show that there is a substantial relationship between leisure time satisfaction and the length of time spent engaging in recreational activities and sports. On the other hand, it has been determined that the income variable is one of the most effective factors in terms of well-being and leisure satisfaction. In conclusion; leisure satisfaction and recreational sport well-being are moderately positively related. It can be stated that the gains of female participants and participants with high perceived income from recreational sports activities contribute more positively to their well-being levels.
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    Yabani Hardal (Sinapis Arvensis L.) Tohumu ve Yağlarının Bazı Bileşim Özellikleri
    (1998) Özcan, Musa; Akgül, Atilla; Bayrak, Ali
    Tohum örneğinde bin tane ağırlığı ve irilik, su, ham kül, protein, yağ ve selüloz, uçucu yağ miktarları belirlenmiştir. Tohum yağında nispi yoğunluk, kırılma indisi, serbest yağ asitleri, peroksit sayısı, iyot sayısı, sabunlaşma sayısı ve sabunlaşmayan madde tayin edilmiştir. Gaz kromatografisi yöntemiyle %0.25 uçucu yağda %95.40 allil izotiyosiyanat, %22.52 sabit yağda başlıca, %29.62 oleik, % 24.18 linoleik, %20.65 erüsik ve %16.52 llnolenik asitler saptanmıştır.