Osmaniye Korkut Ata University Academic Repository
Not a member yet
    5726 research outputs found

    Association of the pituitary gland height with variant sella morphology in children

    No full text
    Purpose To analyze the relationship of the height of the pituitary gland (HPG) with the heights of the dorsum sellae (HDS) and tuberculum sellae (HTS) on pediatric magnetic resonance imaging (MRI) views. Methods MRI slices of 180 healthy children (100 males and 80 females) aged 1-18 years were included in the study. Results Average HPG, HTS and HDS values were determined as 6.66 +/- 1.58 mm, 10.97 +/- 1.99 mm, 13.62 +/- 2.67 mm, respectively. No statistically significant difference was determined between the measurements in term of sex. All parameters correlated with pediatric ages. HPG increased up to the prepubescent period, and decreased after this period (p 10 mm. There was no child with HPG/HDS > 1 or HPG/HTS > 1. Conclusion This work provided three substantial additions to the literature as follows: (a) all pediatric HPGs were distinctly smaller than HDSs and HTSs, (b) some children (3.33%) at puberty (age range: 10-14 years), regardless of sex, might have a HPG > 10 mm, even though there was no pathology at the pituitary gland, and (c) to our knowledge, this retrospective MRI examination evaluated the relation of HPG with variant sella morphology in normal children for the first time in the literature

    The environmental and economic impacts of defence expenditures: An empirical investigation for ürki·ye

    No full text
    Askeri harcamalar bir ülkenin güvenliği için zaruridir ancak bu harcamaların ekonomik ve çevresel etkileri bulunmaktadır. Askeri harcamalar ve ekonomik büyüme ilişkisi geçmişte iktisatçılar tarafından yaygın olarak analiz edilmiş, bu harcamaların çevresel etkileri ise genellikle karbon emisyonları üzerinde değerlendirilmiştir. Ancak karbon emisyonları çevresel sorunların sadece talep yanını göstermekte ve arz yönünü ihmal etmektedir. Bu ihmali önlemek için bu çalışma askeri harcamaların yük kapasitesi faktörü üzerindeki etkilerini Türkiye için 1985-2022 döneminde analiz etmektedir. Yük kapasitesi faktörü küresel hektar alan olarak hem insanlığın çevreye verdiği zararı hem de bu zararı doğanın karşılama gücünü yansıtmaktadır. Bu nedenle askeri harcamaların yük kapasitesi faktörü üzerindeki etkilerinin değerlendirilmesi daha kapsamlı bir çevresel analize imkan tanımaktadır. Çalışma ampirik analiz için Johansen-Juselius eşbütünleşme testi, tam modifiye edilmiş en küçük kareler yaklaşımı ve kanonik eşbütünleşme regresyonu (CCR) tahmincisini kullanmaktadır. Ampirik analizin sonuçları petrol tüketiminin ekonomik büyümeyi desteklediğini, askeri harcamaların ise ekonomik büyüme üzerinde olumsuz bir rol oynadığını göstermektedir. Ayrıca, askeri harcamalar ve ekonomik büyüme yük kapasitesi faktörünü azaltarak çevresel kaliteyi olumsuz yönde etkilemektedir. Jeopolitik riskin ise ekonomik büyüme ve yük kapasitesi faktörü üzerinde herhangi anlamlı etkisi bulunmamaktadır. Bu bulgular askeri harcamaların hem çevre hem de ekonomik büyüme üzerinde olumsuz etkisinin olduğunu göstermektedir. Türkiye bu bulguları dikkate alarak askeri sektör alanında çevreci uygulamaları teşvik etmelidir.Military spending is essential for a country's security, but this spending has economic and environmental implications. The relationship between military spending and economic growth has been extensively analyzed by economists in the past, and the environmental impact of this spending has generally been assessed in terms of carbon emissions. However, carbon emissions only show the demand side of environmental problems and neglect the supply side. To prevent this neglect, this study analyzes the effects of military expenditures on the load capacity factor for Türkiye in the period 1985-2022. The load capacity factor reflects both the damage caused by humanity to the environment as a global hectare area and the ability of nature to compensate for this damage. Therefore, assessing the effects of military spending on the load capacity factor allows for a more comprehensive environmental analysis. The study uses the Johansen-Juselius cointegration test, the fully modified least squares approach and the canonical cointegration regression (CCR) estimator for the empirical analysis. The results of the empirical analysis show that oil consumption supports economic growth, while military expenditure plays a negative role for economic growth. In addition, military spending and economic growth have a negative impact on environmental quality by reducing the load capacity factor. Geopolitical risk has no significant impact on economic growth and load capacity factor. These findings show that military spending has a negative effect on both the environment and economic growth. Türkiye should consider these findings and promote environmentally friendly practices in military sector

    Tunable water vapor adsorption properties on ion exchange microporous zeolite Na-X derived from natural kaolin

    No full text
    The adsorption of water vapor on K+, Ca2+and Mg2+ exchanged zeolite Na-X is studied by gravimetric method. As reported by previous studies, the samples were modified by impregnation and characterized by physicochemical and thermal analysis methods. The analysis of the X-ray fluorescence data obtained on the samples confirmed the effectiveness of cation exchange. XRD, FTIR, SEM, and NMR analyses show good zeolite structure and texture conservation after ion exchange. It is determined that the Na-X zeolite had a BET surface area, SBET, of 764 cm2/g and pore volume of 0.39 cm3 /g when nitrogen (N2) was adsorbed at 77 K. After the ion exchange, these values decreased to 0.11 cm3/g and 211 cm2/g for the zeolite exchanged with K+ ions, 0.25 cm3/g and 482 cm2/g for that exchanged with Mg2+ ions, and 0.23 cm3/g and 433 cm2/g for that exchanged with Ca2+ ions. Water vapor adsorption properties were evaluated by dynamic vapor sorption highlighting the dependence of this process on the nature of the compensating cations. This exothermic process experiences a significant improvement when the zeolite is exchanged with Mg2+ and Ca2+ cations. The differences between the adsorption capacities of the samples are mainly due to the location, size, and charge of the zeolite X extraframework cations. Experimental data were fitted to the Langmuir, Freundlich, Sips, Toth, and Dual-site Langmuir (DSL) isotherm models. The coefficient of determination (R2) and the chi-square error (X2) were used to estimate the accuracy of the data obtained from these isothermal models. According to error function results, it can be seen that all five models fit the experimental data well depending on the temperature. The mean isosteric enthalpy of adsorption values for the various samples are -123.93, -280.22, -36.55 and -29.35 kJ/mol for Zeo-Na-X, Zeo-K-X, ZeoMg-X and Zeo-Ca-X, respectively. As a result of examining the reusability of magnesium zeolite, it was seen that the material was reusable even after being used 5 times

    UNKNOWN BAHR-I TAVÎLS IN CLASSICAL TURKISH LITERATURE-3: FEHMÎ, ŞEHRÎ AND İHSÂN’S BAHR-I TAVÎLS

    No full text
    Klasik Türk edebiyatında sözlerin kalıplara dökülmesine vesile olan birçok nazım şekli bulunmaktadır. Bunlardan biri de kendine has birtakım özelliklere sahip olan ve sınırlı sayıda örneği bulunan bahr-ı tavîllerdir. Genellikle âşık ile maşuk arasındaki ilişkilerin ele alındığı bu nazım şeklinin en bariz özellikleri mensur metinlere benzemesi, secili anlatımın ağır basması, diğer nazım şekillerine göre daha sade bir dille ve genellikle aruz veznindeki fe‘ilâtün tef’ilesinin art arda tekrarıyla yazılmasıdır. Edebiyatımızda 15. yüzyıldan 20. yüzyıla kadarki her dönemde bahr-ı tavîl örneklerine rastlanmaktadır. Şimdiye kadar yapılan bazı akademik çalışmalarda kırk civarında bahr-ı tavîlin varlığı ortaya konmuş olsa da çeşitli vesilelerle yapılan eser taramaları neticesinde yeni örnekler tespit edilerek toplam sayı yetmişin üzerine çıkarılmıştır. Bu çalışmada yeni tespit edilen örneklerle birlikte bahr-ı tavîllerin toplu bir listesi oluşturularak edebî kaynaklarda hakkında çok az bilgi verilen bu nazım şeklinin sahip olduğu şekil ve muhteva özellikleri hakkında birtakım çıkarımlarda bulunulmuştur. Akabinde şimdiye kadar yapılan çalışmalarda haberdar olunmayan Fehmî, Şehrî ve İhsân’ın üç yeni bahr-ı tavîli şekil ve muhteva bakımından tahlile tabi tutulmuş ve bunların çeviri yazılı metinlerine yer verilmiştir.In classical Turkish literature, there are numerous verse forms that have enabled the structuring of words into fixed patterns. One of these is bahr-ı tavîl, which possesses unique characteristics and is represented by a limited number of examples. This verse form, which generally addresses the relationship between the lover and the beloved, is most notably characterized by its resemblance to prose texts, its use of rhymed prose (seci), a comparatively simpler language than other verse forms, and its composition predominantly through the repeated use of the fe‘ilâtün foot of the aruz meter. Examples of bahr-ı tavîl can be found in every period of our literature from the 15th to the 20th century. Although some academic studies to date have identified around forty bahr-ı tavîl texts, recent surveys of literary works conducted for various purposes have uncovered new examples, increasing the total number to over seventy. In this study, a comprehensive list of bahr-ı tavîls has been compiled, including newly identified examples, and certain inferences have been made about the formal and thematic features of this verse form, which has received limited attention in literary sources. Subsequently, three previously unknown bahr-ı tavîl texts by Fehmî, Şehrî and İhsân have been analyzed in terms of form and content, and their transliterated versions have been included

    The Investigation of Quality of Life and Post-traumatic Stress Disorder Levels of Midwifery Students Experiencing an Earthquake

    No full text
    Objectives The knowledge of students' quality of life and post-traumatic stress disorder levels, investigation of the relationship between them, and taking measures are essential in terms of guiding the necessary interventions. This study was conducted to determine the quality of life and post-traumatic stress disorder levels of midwifery students experiencing an earthquake.Methods This descriptive and correlational study was conducted with 363 midwifery students who had experienced the Kahramanmaras, T & uuml;rkiye earthquake. Data were obtained using a Descriptive Information Form, the PTSD-Brief Scale, and the World Health Organization Quality of Life Scale (WHOQOL-BREF).Results The rate of post-traumatic stress disorder in the sample studied (n = 363), which consisted of midwifery students who would work in the field of health, was 21.5% 2 months after the earthquake. The multiple linear regression analysis indicated that factors predicting post-traumatic stress disorder following the earthquake were quality of life score related to physical and environmental domains, damage status of the house, presence of family history of depression, and smoking status.Conclusions This study, which was conducted 2 months following the earthquakes, showed that living spaces had an impact on the occurrence of post-traumatic stress disorder symptoms

    İhracat Performansına Göre Ülkeler: G7, Çin ve Türkiye

    No full text
    Bu araştırma, seçilen 95 ülkenin ihracat performanslarına göre benzerlik ve farklılık durumlarını ortaya koymayı amaçlamış ve özellikle G7 ülkeleri, Çin ve Türkiye üzerine odaklanmıştır. Ayrıca, G7 ülkelerinin ihracat performansları iki farklı zaman diliminde (2013-2017 ve 2018-2022) zamansal farklılık açısından karşılaştırılmıştır. Ülkelerin ihracat performansı, mal ve hizmet ihracatı, yüksek teknoloji ihracatı ve ticari hizmet ihracatı olmak üzere üç başlık altında değerlendirilmiş ve bu analizde kümeleme yöntemi olarak Beklenti Maksimizasyonu (Expectation Maximisation, EM) algoritması kullanılmıştır. Çalışma, 2013-2022 yılları arasında Dünya Bankası verilerine dayanmaktadır. Analiz sonuçlarına göre, yüksek teknoloji ihracatı açısından G7 ülkelerinin benzer performanslar sergilediği görülmüştür. Mal ve hizmet ihracatı açısından ise Almanya ve Birleşik Devletler benzer bir performans ortaya koyarken, Birleşik Krallık, Fransa, Japonya, Kanada ve İtalya’nın kendi aralarında daha yakın bir performans sergilediği tespit edilmiştir. Ticari hizmet ihracatı bakımından ise Birleşik Devletler, diğer ülkelerden ayrışarak benzersiz bir konumda yer almıştır. Almanya, Birleşik Krallık, Fransa ve Japonya benzer özellikler gösterirken, Kanada ve İtalya’nın da kendi aralarında yakın bir performans sergilediği belirlenmiştir. Bu çalışma, seçilen ülkelerin ihracat performanslarını değerlendiren kapsamlı bir analiz sunmakta ve elde edilen sonuçlar, politika yapıcılar için önemli çıkarımlar sağlamaktadır. Özellikle, ülkeler arasındaki benzerlikler ve farklılıklar dikkate alınarak, ülkelerin mevcut konumları daha net bir şekilde anlaşılabilir ve geleceğe yönelik stratejik planlar daha etkili bir şekilde oluşturulabilir

    The effect of servant leadership on psychological well-being and innovative work behavior

    Get PDF
    11.08.2025 tarihine kadar kullanımı yazar tarafından kısıtlanmıştır.Bu çalışmanın amacı, hizmetkâr liderliğin psikolojik iyi oluş ve yenilikçi iş davranışı üzerindeki etkisini incelemektir. Çalışma kapsamında, zaman ve maliyet kısıtı nedeniyle kolayda örneklem yöntemi ile seçilen, Adana Hacı Sabancı Organize Sanayi Bölgesi'nde bulunan 10 üretim işletmesinde çalışan 367 kişiden anket aracılığıyla veri toplanmıştır. Verilerin analizinde keşfedici ve doğrulayıcı faktör analizleri yapılmış, değişkenler arasındaki korelasyonlar incelenmiş ve hipotezleri test etmek amacıyla yapısal eşitlik modeli ve bootstrap yöntemi ile değişkenler arasındaki doğrudan, dolaylı ve toplam etkiler test edilmiştir. Araştırma sonuçları, hizmetkâr liderliğin çalışanların psikolojik iyi oluş ve yenilikçi iş davranışı üzerinde pozitif yönde anlamlı bir etki yarattığını göstermektedir. Ayrıca, psikolojik iyi oluşun da yenilikçi iş davranışını pozitif yönde anlamlı olarak etkilediği tespit edilmiştir. Yapılan aracılık analizi sonucunda, ise hizmetkar liderliğin yenilikçi iş davranışı üzerindeki etkisinde psikoljik iyi oluşun aracılık rolü olduğu tespit eilmiştir.The aim of this study is to examine the effect of servant leadership on psychological well-being and innovative work behavior. Within the scope of the study, data were collected through a survey from 367 employees working in 10 manufacturing companies located in the Adana Hacı Sabancı Organized Industrial Zone, selected using a convenience sampling method due to time and cost constraints. For data analysis, exploratory and confirmatory factor analyses were conducted, correlations among variables were examined, and structural equation modeling (SEM) and the bootstrap method were employed to test the direct, indirect, and total effects among variables. The research findings indicate that servant leadership has a significant positive effect on employees' psychological well-being and innovative work behavior. Additionally, it was found that psychological well-being significantly and positively influences innovative work behavior. Furthermore, mediation analysis revealed that psychological well-being plays a mediating role in the relationship between servant leadership and innovative work behavior.

    The level of knowledge related to the disease and quality of life among coronary artery patients

    No full text
    Background: This study was conducted with descriptive design to determine the level of knowledge and quality of life of individuals suffering from coronary artery disease. Methods: The study was conducted with 236 patients who applied to the cardiology outpatient clinic of a training and research hospital between November 2021 and April 2022. The data of the study were collected by personal information form, coronary artery disease education questionnaire-II and cardiac health profile scale. Results: The patients' total mean score for the coronary artery disease education questionnaire-II was 25.71+12.49. According to the total score obtained from the coronary artery disease education questionnaire-II, it was determined that 49.2% of the patients had an insufficient knowledge level, 44.5% Poor, and 5.9% Acceptable. Knowledge level of only one patient was good. In the chest pain classification of the cardiac health profile scale, the chest pain level of 28.4% of the patients was the class II. Total mean score of the patients for the cardiac health profile scale was 679.88+245.89. Discussion: It was found that the level of knowledge of the participants about coronary artery disease was insufficient and their level of quality of life was moderate. It is recommended to organize education programs based on the education, culture, perception of health, spoken language in order to elevate their knowledge level and thus their level of quality of life

    Efficient Electrochemical Oxidation of Methylene Blue in Wastewater Using Ti/SnO2-Sb/PbO2 Anodes: An Engineering Perspective

    No full text
    In this research work, the Ti/SnO2-Sb interlayer was successfully prepared via the hydrothermal synthesis method. Subsequently, the outer PbO2 coating was fabricated through electrodeposition technology, resulting in the desired Ti/SnO2-Sb/PbO2 electrode. Characterization of the electrode's morphology revealed that it is entirely covered by beta-PbO2 particles, resulting in an increased surface area. Electrochemical tests demonstrated that the Ti/SnO2-Sb/PbO2 electrode exhibits superior performance compared to the Ti/SnO2-Sb electrode, with enhanced electron transfer efficiency and a greater capacity for generating active species. In degradation experiments using the Ti/SnO2-Sb/PbO2 electrode, the degradation rate of MB exceeded 90% within 40 min, underscoring the electrode's high efficiency. The optimal reaction conditions for the Ti/SnO2-Sb/PbO2 electrode were determined through an optimization model constructed via response surface methodology (RSM). A reaction time of 52 min was found necessary, along with an electrode plate spacing set at 2.2 cm and a current density maintained at 48 mA cm(-2). Under such parameters, the removal rate of MB achieved by the Ti/SnO2-Sb/PbO2 electrode reached as high as 92.73%. From the electron paramagnetic resonance spectra analysis, singlet oxygen (O-1(2)) and superoxide radicals (O-2(-)) were identified as the dominant active species produced by the Ti/SnO2-Sb/PbO2 anode

    598

    full texts

    5,726

    metadata records
    Updated in last 30 days.
    Osmaniye Korkut Ata University Academic Repository
    Access Repository Dashboard
    Do you manage Open Research Online? Become a CORE Member to access insider analytics, issue reports and manage access to outputs from your repository in the CORE Repository Dashboard! 👇