Browsing by Author "Yavuz N."

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    Boronizing of iron based P/M materials; [Demir esasli T/M malzemelerin borlanmasi]
    (2002) Atik E.; Meriç C.; Yavuz N.
    Iron based machine parts produced by powder metallurgy become widespread in industry. Since these parts are produced from low carbon iron powders, they are used generally in sintered form without a heat treatment. The boronizing method which is already used for hardening of metalsurfaces can be applied to sintered iron based machine parts subjected to friction. With boronizing, which produced hard, low friction coefficient, high wear resistant surfaces under appropriate tribological conditions, resistance to corrosive environment can also be achieved.
  • No Thumbnail Available
    Item
    Aesthetic breast perception among Turkish population
    (Turkish Society of Plastic Reconstructive, and Aesthetic Surgery, 2015) Kamburoğlu H.; Altuntas Z.; Yavuz N.; Kivanc O.; Dadaci M.; Evrenos K.; Selimoglu N.; Bitik O.; Uzun H.; Calis M.
    Introduction: Breast tissue has different composition, density, projection, position and shape among population. In literature, there are many studies that discuss the aesthetic shape or the anthropometry of breast tissue. But there is not much study which tries to find out the aesthetic perception of population. In this study we would like to find out Turkish people's aesthetic perception of the breast. Materials and Methods: This study was performed through a web site 'www.breastsurvey.net'. Nine demographic questions were asked to the participants (age, gender, education, monthly income, profession, marital status, number of children, city and country). Then the participants were asked to choose one from the 20 draw-arts, which range from AA to D cup size (AA, A, B, C, D) and from 38 to 44mm (38-40-42-44) areola. Breast sizes are calculated and drawn according to the EN13402 European Union Standard. Results: Four hundred and thirty seven people participated in our survey. Two hundred and four of them were male and 233 of them were female. D cup size was mostly preferred with a percentage of 70% among males. Similarly, D cup size was mostly preferred among female participants with a percentage of 40%. D cup size's popularity did not change in other subgroups (such as age, gender, education, monthly income, profession, marital status, number of children, city), either. Conclusion: If the breast shape is 'aesthetically perfect', bigger cup sizes (like 'D') are preferred in Turkish population regardless of socio-economic status. . In other words, the bigger is the better, in case it is beautiful.
  • No Thumbnail Available
    Item
    Prevalence of sleep disorders in the Turkish adult population epidemiology of sleep study
    (Springer, 2015) Demir A.U.; Ardic S.; Firat H.; Karadeniz D.; Aksu M.; Ucar Z.Z.; Sevim S.; Ozgen F.; Yilmaz H.; Itil O.; Peker Y.; Aygul F.; Kiran S.; Gelbal S.; Cepni Z.; Akozer M.; Neyal A.; Cilli A.; Ozsancak A.; Kutlu A.; Salepci B.; Baklan B.; Oktay B.; Tuncel D.; Levent E.; Ekinci E.; Eyuboglu F.; Yildiz F.; Kirbas G.; Kaynak H.; Aydin H.; Boyaci H.; Bora I.; Oztura I.; Aslan K.; Gunhan K.; Habesoglu M.A.; Unlu M.; Demet M.; Dursunoglu N.; Tascilar N.; Yavuz N.; Erdinc O.; Araz O.; Dogan O.T.; Yetkin O.; Celik P.; Alp R.; Altin R.; Bilgin S.; Ismailogullari S.; Gazioglu S.; Ozkurt S.; Velioglu S.; Yetkin S.; Kuyucu T.; Atay T.; Uygunoglu U.; Tutar U.; Celik Y.; Bulbul Y.
    Sleep disorders constitute an important public health problem. Prevalence of sleep disorders in Turkish adult population was investigated in a nationwide representative sample of 5021 Turkish adults (2598 women and 2423 men, response rate: 91%) by an interviewer-administered questionnaire. Insomnia was defined by the DSM-IV criteria, habitual snoring and risk for sleep-related breathing disorders (SDB) by the Berlin questionnaire, excessive daytime sleepiness (EDS) by the Epworth sleepiness scale score, and restless legs syndrome (RLS) by the complaints according to the International Restless Legs Syndrome Study Group criteria. Mean age of the participants was 40.7 ± 15.1 (range 18 to 90) years. Prevalence rates (men/women) were insomnia 15.3% (10.5%/20.2%; P < 0.001), high probability of SDB 13.7% (11.1%/20.2%; P < 0.001), EDS 5.4% (5.0%/5.7%; P: 0.09), RLS 5.2% (3.0%/7.3%; P < 0.001). Aging and female gender were associated with higher prevalence of sleep disorders except for habitual snoring. Prevalence rates of the sleep disorders among Turkish adults based on the widely used questionnaires were close to the lower end of the previous estimates reported from different parts of the world. These findings would help for the assessment of the health burden of sleep disorders and addressing the risk groups for planning and implementation of health care. Sleep and Biological Rhythms © 2015 Japanese Society of Sleep Research.