BelekUniversity Institutional Repository
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Recent Submissions
Clinical and sociodemographic differences in adult women and men with obsessive-compulsive disorder
(Yerküre Tanıtım & Yayıncılık Hizmetleri A.Ş., 2024) Çoban, Deniz Adnan; Tan, Oğuz; Gündoğmuş, İbrahim
Objective: Gender is related to differences in the prevalences, manifestations and comorbidities of mental disorders. Findings on the effect of sex on adults with obsessive-compulsive disorder (OCD) are limited and inconsistent. We aimed to compare male and females with OCD in a large sample of adults. Methods: We included 559 patients with OCD (299 females, 50.68%). We employed the Yale-Brown Obsession and Compulsion Scale (Y-BOCS), Hamilton Depression Rating Scale-17 (HDRS-17) and Beck Anxiety Inventory (BAI). We gathered data about the onset of illness, the years of education, marital status, long-term unemployment, history of hospitalization and suicide attempts, lifetime attention deficit and hyperactivity disorder (ADHD), tic disorder, alcohol use disorder (AUD), substance use disorder (SUD), smoking and symptom dimensions. Results: The Y-BOCS, HDRS-17 and BAI scores were significantly higher in women. Men were characterized by earlier onset of OCD, younger age, longer years of education, higher prevalence of past or current tic disorders and higher frequency of AUD/SUD and smoking. Ratio of being married was higher among women whereas most of males were never-married. History of suicide attempt was more common among women. Conclusion: Our research offers additional support for variations in clinical characteristics of OCD based on gender. It is essential to investigate the biological foundation of gender differences on OCD.
Diurnal variation of essential oil ratio and composition of some basil genotypes
(BANGLADESH BOTANICAL SOC, 2022) Aygün, Yusuf Ziya; Eren, Yılmaz; Ertekin, Esra Nermin
The change of essential oil ratios and components of five different basil genotypes harvested at different times (00:00, 06:00, 12:00, 18:00) in day was investigated. Plants were grown under the field conditions and essential oils of the plants were extracted by hydro-distillation method. Identification of essential oil components were performed by GC-MS. It was the G5 genotype that had the highest essential oil content in all plant parts, regardless of the time of day. The highest essential oil content (2.8%) was obtained from the dry leaves of the G5 genotype from the sampling made at 18:00. The main components of essential oils were determined as linalool, eucalyptol, trans alpha-bergamotene, methyl cinnamate, alpha-muurolol and eugenol. However, while the ratios of these components differed between genotypes, the changes in time of day were similar for some components. Linalool content tended to increase mostly in the middle of the day. This study indicated that essential oil ratio and components of different basil genotypes significantly differed according to harvesting times in day.
Utilization of pumice of Burdur region and zeolite of Bigadic-Balikesir region as fine aggregate in construction materials
(MADEN TETKIK VE ARAMA GENEL MUDURLUGU-MTA, 2020) Beycan Tatanoğlu, Özge; Koçkal, Niyazi Uğur
Volcanic originated pumice and zeolite aggregates have low density owing to their considerable porous structure. Porosity is usually correlated with insulation properties. In order to examine the effects of this lightweight aggregates on dead load of structure and insulation properties of standard construction materials, samples were produced by using pumice and zeolite at varying percentages by volume and control samples were manufactured with crushed sand. The samples were exposed to normal (standard) curing, hot water curing and steam curing to observe the effect of different curing regimes on their behavior. Bulk density and thermal conductivity tests were carried out on samples. Both bulk density and thermal conductivity values of the lightweight mortar samples were smaller than those of control sample. Besides, chemical compositions of aggregates and cement, analyses were also performed. Silica content of pumice and zeolite were %54,09 and %75,14 by mass respectively.
Production of a design developed for the assembly filter parts, optimization of welding and field test
(ASSOC MECHANICAL ENGINEERS TECHNICIANS SLOVENIA, 2022) Maden, Hakan; Çetinkaya, Kerim
For the joining of non-removable plastic parts, methods such as friction welding, friction-stir welding, ultra-sonic welding, chemical joining, and hot-plate welding are used. Rotary friction welding is generally used for joining the filter parts of water treatment devices. After the rotating friction welding of the filter parts, semi-melted agglomerations are formed in the inner parts. To prevent semi-melted accumulation, a weld joint profile design was developed in the ABAQUS software in a previous study. In this study, injection moulds had been produced according to weld joint profile design. The taken plastic presses were welded with the friction welding machine and the joint was controlled and compared. It is seen that the semi-melted agglomeration was successfully confined. By performing Taguchi experimental method and ANOVA analysis on friction welding machine parameters, the optimum pressure conditions were determined in order to carry out static and dynamic tests according to NSF standards and field tests by producing 1500 pilot products, and it has been put into use. The lifetime of the developed filter depends on the material which was used in the manufacture. The next study is aimed to improve the lifetime of the developed filters.
A new family of Lerch-type zeta functions interpolating a certain class of higher-order Apostol-type numbers and Apostol-type polynomials
(NATL INQUIRY SERVICES CENTRE PTY LTD, 2019) Küçükoğlu, İrem; Şimşek, Yılmaz; Srivastava, H. M.
The aim of this paper is to investigate some classes of higher-order Apostol-type numbers and Apostol-type polynomials. We construct Lerch-type zeta functions which interpolate these numbers and polynomials at negative integers. Moreover, by combining some well-known identities such as the Chu-Vandermonde identity with the Lerch-type zeta functions and generating functions for the higher- order Apostol-type numbers and Apostol-type polynomials, we derive some relations and identities including functional equation for these Lerch-type zeta functions with other zeta type functions, Raabe-type multiplication formula for the higher-order Apostol-type polynomials and the Stirling numbers. Finally, we give some remarks and observations on Lerch-type zeta functions and their functional equations.
