Investigation of Static and Fatigue Characteristics of Thermoplastic CF-UD/PEKK Material for Rotorcraft Lug Parts

In rotary wing aircraft, composite lug structures are perforated structures that connect the rotor and blades. They play a significant structural role in rotary wing aircraft. In this study the effect of lay-up parameters on mechanical strength of a thick composite part that represents a blade root. This part is autoclave manufactured polyetherketoneketone matrix carbon fiber reinforced (CF/PEKK) composites, which have recently been researched for usage in defense and aerospace is investigated. The chosen material carbon-fiber-reinforced polyetherketoneketone composites (CF-PEKK) have an excellent mechanical, physical, thermal performance. Aerospace sector has a special interest on this material due to material's low density and versatility. In this study, static and fatigue performance of rotorcraft lug part were investigated by applying non-destructive-test (NDT) methods and the mechanical strength values were discussed according to the experimental results. It has been observed that the component parts with -/+ 45 degrees layup has the highest mechanical strength. As a result of the static and fatigue tests, it is seen that satisfactorily performance in the view of the both static and dynamic loading states.Scientific and Technological Research Council of Turkey (TUEBIdot;TAK) under the Frontier R&D Laboratory Support Program [5189901]This study is a part of the project (# 5189901) supported by the Scientific and Technological Research Council of Turkey (TUEB & Idot;TAK) under the Frontier R&D Laboratory Support Program and hosted in Turkish Aerospace Industries, Inc.

Assessing Accessible Open and Green Areas for Emergency Gathering and Temporary Shelter: The Case of Lefkoşa, TRNC

This study focuses on the potential of accessible open and green areas (OGAs) to serve as gathering spaces and temporary shelters during emergency response to disasters such as flood, earthquake, storm, terrorism, battle, etc. Specifically, the city of Lefkoşa in Northern Cyprus (TRNC) is studied in this context. A systematically constructed approach is employed, starting with the identification of the Dense Urban Core (DUC) within an 800 m access zone of OGAs and with a population density of more than 260 ha based on the Lefkoşa Urban Development Plan (LUDP). The study then determines the OGA requirements for gathering and temporary shelters during and after disasters, based on the floor area ratio, maximum building footprint ratio and projected population density given by LUDP. As a result of the study, the OGA requirements within the scope of the DUC were calculated to be minimum of 92 ha for gathering places, and minimum of 687 ha for temporary shelters. In this context, the city's disaster resilience index of the city is determined respectively to be 0.46 and 0.10. It is expected that this study will contribute to the integration of urban OGA development plans with disaster management efforts

Sağlık Bilimleri Fakültesinde Okuyan Öğrencilerin Sağlık Okuryazarlık Düzeylerinin Belirlenmesi ve Diğer Fakülte Öğrencileri ile Karşılaştırılması

Amaç: Araştırma, sağlık bilimleri fakültesi lisans programlarında eğitim gören öğrencilerin, sağlık okuryazarlık düzeylerinin belirlenmesi ve üniversitenin diğer fakültelerinin öğrencilerinin sağlık okuryazarlık düzeyleriyle kıyaslanması amacıyla gerçekleştirilmiştir. Yöntem: Araştırma, kesitsel bir çalışma olup araştırmanın evrenini, bir vakıf üniversitesinin sağlık bilimleri fakültesi ve diğer fakültelerinin öğrencileri oluştururken, çalışma tabakalı örnekleme yöntemi kullanılarak belirlenen 415 öğrenci örneklemiyle tamamlanmıştır. Bulgular: Araştırmaya, sağlık bilimleri fakültesinde 132 (%31,8) öğrenci ve diğer fakültelerde öğrenim gören 283 (%68,2) öğrencinin katılımı sağlamıştır. Her iki gruptaki öğrencilerin sağlık okuryazarlık düzeyleri arasında anlamlı farklılık bulunmamıştır. Öğrencilerin sağlık okuryazarlığı düzeyinin, 23 puan üzerinden aldıkları ortalama puan 12,39 (SS=3,35) olduğu (%53,9) belirlenmiştir. Sonuç: Çalışmada, sağlık bilimleri fakültesi öğrencilerinin sağlık okuryazarlık düzeyinin, diğer fakültelerin öğrencilerinden anlamlı şekilde daha yüksek olmaması çarpıcı bir sonuç olmuştur. Çalışma verileri doğrultusunda, özellikle sağlık bilimleri fakültesi için sağlık okuryazarlığı derslerinin zorunlu hale getirilmesi, derslerde gerçek yaşamdan örneklerin sunulması ve bilgilendirici seminer ve etkinliklerin arttırılması önerilmektedir

Employing pre-annealing as a control tool for alloying in CdSeTe/ CdTe stacks produced by evaporation in vacuum

Alloying plays a critical role in CdSeTe/CdTe stacks used as absorber structure in high efficiency solar cells. In this study, the effect of pre-annealing between CdSeTe and CdTe on the structural and optical properties of stacks was examined in detail. After the CdSeTe layers (before CdTe) were grown by vacuum evaporation, pre-annealing was applied at moderate temperatures in the range of 200 degrees C-300 degrees C. According to both XRD patterns and Raman spectra, a clear effect of preannealing temperature on alloying ratios and phase formations between CdSeTe and CdTe was ascertained. It was observed from the surface images that the change in pre-annealing temperature affected the grain sizes and morphology, depending on the Se ratios in the alloying. It was found that the transmission spectrum shifted to the long wavelength region with the change in crystallization as a result of pre-annealing. In the PL spectra, the presence of transitions related to the phase structures revealed by the XRD results was detected. In consequence, pre-annealing at 250 degrees C presented more promising results for potential CdTe cell applications

Understanding possible personal correlates of organizational citizenship behavior: Mindfulness and oneness behaviors

The current study aims to understand the mechanisms underlying the predictive relationship between mindfulness and organizational citizenship behaviors especially targeted for other individuals inside the organizations. As part of this relationship model, oneness behaviors were suggested as an actor of mediation. A sample of 281 blue collar employees participated for the study with employing a multi-source data gathering method. In line with the self-regulation and Buddhist based conceptualizations, and previous related research, statistical analyses revealed significant effects of mindfulness on organizational citizenship behavior towards individuals (OCBI) after controlling demographic variables, and showed fully mediated roles of one and other sub dimensions in mindfulness-OCBI interaction. The current study brings a novel approach to mindfulness and organizational citizenship relationship by including oneness behaviors inside the research model while stressing the importance of interconnectedness and how it could be practiced inside the organizations

Irrigation and potassium fertilization effects on plant growth, tuber yield, quality, and water use efficiency of potato

Potato (Solanum tuberosum L.) requires high levels of water and potassium to achieve optimal yield and quality. This is of importance for the sustainable agriculture, and therefore, it is quite concern of agronomists to define the proper irrigation level and potassium rates in potato. In this study, we tested three irrigation levels (full irrigation (I100), 66% full irrigation (I66; 33% deficit), 33% full irrigation (I33; 66% deficit)), and six potassium doses (K0:0 kg ha-1 of K, K1:40 kg ha-1 of K, K2:80 kg ha-1 of K, K3:120 kg ha-1 of K, K4:160 kg ha-1 of K and K5:200 kg ha-1 of K) in Agria. The study was conducted in Nigde (Central Anatolia, Turkiye, 37 degrees 56 ' 31.8 '' N 34 degrees 38 ' 04.2 '' E) as a two-year field experiment. In the experiment, the respective values were recorded for each variable; plant height 36.0-92.0 cm, maturation period 82.0-98.0 days, number of stem per plant 3.4-4.7, number of tuber per plant 4.1-7.7, tuber yield per plant 247.1-846.2 g, marketable tuber ratio 79.4-99.4%, discarded tuber ratio 0.6-5.7%, secondary structured tuber ratio 0.0-16.6%, total tuber yield 11.8-38.7 t, dry matter 19.2-21.6%, specific gravity 1.072-1.087 g cm3, and starch 13.2-15.9%. Besides, it was determined that the optimum irrigation x potassium interaction was achieved at I100xK3 and I100xK4 in terms of plant and yield parameters, and I33xK3 and I33 x K4 in terms of tuber quality parameters. In our work, we concluded that a water need of average 590-720 mm (not including the effective rainfall amount) and potassium supply of 120-160 kg ha-1 in Central Anatolia will be optimal for the potato cultivation. The findings of this study will contribute to potato cultivation practices by providing proper information about the optimal irrigation need and potassium dose.Scientific Research Project Office (BAP) of Nigde Omer Halisdemir University [TGT 2020/4-LUETEP]This research was supported by the Scientific Research Project Office (BAP) of Nigde Omer Halisdemir University (grant numbers: TGT 2020/4-LUETEP). We appreciate Doga Seed Company's assistance in ensuring the supply of potatoes and also wish to thank the feedback provided by the reviewers and editors

Molecular characterization of spiroplasma endosymbionts in ticks on tortoises in Niğde province

Fen Bilimleri Enstitüsü, Biyoteknoloji Ana Bilim DalıBu tez çalışması Niğde yöresi kaplumbağa kenelerinde Spiroplasma endosimbiyontlarının moleküler olarak belirlenmesi için yapılmıştır. Bu amaçla Haziran'da 17, Temmuz'da 22, Ağustos'ta 21 ve Eylül ayında 28 olmak üzere HaziranEylül 2022 tarihleri arasında toplam 88 kaplumbağa incelenmiştir. Toplanan keneler tür tanımlaması yapılana kadar %70'lik etil alkol içerisinde saklanmıştır. Enfeste belirlenen kaplumbağalardan toplam 184 kene toplanmış (167 erkek ve 17 dişi) ve bu kenelerin tamamı Hyalomma aegyptium olarak teşhis edilmiştir. Kaplumbağalardan toplanan 184 kene örneği her bir kaplumbağaya ait olacak şekilde erkek ve dişi olarak separe edilmiş ve sonrasında toplam 68 kene havuzu oluşturulmuştur. Kene havuzlarından ticari kit ile genomik DNA (gDNA) ekstraksiyonu yapılmıştır. gDNA izolatları Spiroplasma 16S rRNA (1000 bp) gen bölgesi yönünden spesifik primerlerle PCR analizine tabi tutulmuştur. Çalışma sonucunda Spiroplasma spp. için toplam 88 kaplumbağanın 4'ünden (%4.5) toplanan kenelerde pozitiflik tespit edilmiştir. Toplanan 184 kenede Spiroplasma pozitifliği %3.2 (6 kene) olarak belirlenmiştir. Pozitif çıkan keneler; Temmuz ve Eylül aylarında tespit edilmiş ve tamamı erkek kene olarak belirlenmiştir. Sonuç olarak, Niğde yöresinde kaplumbağa kenelerinde Spiroplasma spp. moleküler olarak ilk kez bu çalışma ile saptanmıştır. Anahtar sözcükler: Kaplumbağa, Hyalomma aegyptium, Niğde, PCR, Spiroplasma,The study was carried out to molecularly identify Spiroplasma endosymbionts in tortoise ticks in the Niğde province. For this purpose, a total of 88 tortoises were examined between June and September 2022, including 17 in June, 22 in July, 21 in August and 28 in September. The collected ticks were stored in 70% ethyl alcohol until examination and species identification. A total of 184 ticks were collected from the infested tortoise (167 males and 17 females) and all of these ticks were identified as Hyalomma aegyptium. 184 tick samples collected from tortoise were separated into male and female for each tortoise, and then a total of 68 tick pools were created. Genomic DNA (gDNA) was extracted from tick pools with a commercial kit. gDNA isolates were subjected to PCR analysis with primers specific for the Spiroplasma 16S rRNA (1000 bp) gene region. As a result of the study, Spiroplasma spp. positivity was detected in ticks collected from 4 of a total of 88 tortoise (4.5%). Spiroplasma positivity was determined as 3.2% (6 ticks) in 184 ticks collected. Positive ticks were detected in July and September and all of them were identified as male ticks. In conclusion, this study was the first molecular detection of Spiroplasma spp. in tortoise ticks in Niğde province. Keywords: Tortoise, Hyalomma aegyptium, Niğde, PCR, Spiroplasm

THE GENOMIC LANDSCAPE OF THE SWITCH/SUCROSE NON-FERMENTABLE CHROMATIN REMODELING COMPLEX IN ACUTE MYLEOID LEUKEMIA

The SWI/SNF chromatin remodeling complex is involved in the regulation of gene expression required for processes such as cell maintenance and differentiation in hematopoietic stem cells. Abnormalities in the SWI/SNF subunits involved in the homeostasis of hematologic processes contribute to the initiation or progression of hematologic malignancies, but the mechanisms underlying this phenotype are not yet fully understood. The aim of study is to comprehensively identify mutations and expression profiles in the genes forming the SWI/SNF complex using bioinformatics tools, with a focus on understanding the underlying mechanisms. Genomic sequences and expression profiles of an AML cohort (n:872) were obtained from using tools and subsequently analyzed. PolyPhen-2, SIFT, and Mutation Assessor tools were used to estimate the oncogenic/pathogenic effects of mutations identified in 9 genes encoding subunits of the complex ARID1A, ARID1B, SMARCA2, SMARCA4, SMARCE1, SMARCB1, DPF2, PMBR1, and BCL7A in AML pathogenesis. STRING analysis was performed to better understand the functional relationships of the mutant proteins in cellular processes. Furthermore, to the mutation profile, gene expression and survival profiles were also determined. A total of 17 genetic abnormalities were determined in 9 genes, including 9 missense, 6 frameshift mutations, 1 mutation in the splice region, and 1 fusion mutation. In the AML cohort, the expression levels of ARID1A, ARID1B, SMARCA2, and PMBR1 were significantly higher in the patient group compared to the healthy group (p<0.01). Survival analysis based on low and high gene expression profiles showed no significant difference in results. In STRING analysis, our genes were found to have functional relationships with the PHF10 protein, which is involved in cell cycle control. The results suggest that the mutations identified in the ARID1A, ARID1B, SMARCA2, SMARCA4, and PBRM1 may disrupt the function of SWI/SNF chromatin remodeling complexes, possibly inducing/activating different cellular pathways involving different chromatin environments during AML pathogenesis

A comparative analysis of national television channel brand positionings

Sosyal Bilimler Enstitüsü, İşletme Ana Bilim Dalı, Üretim Yönetimi ve Pazarlama Bilim DalıBu araştırmada medya platformunda önemli yeri olan 2022 yılı itibariyle en çok izlenen televizyon kanallarının, izleyici zihnindeki marka konumlarını belirli özellikler açısından nasıl algılandığına göre, algılama haritaları ile karşılaştırarak analiz etmek amaçlanmıştır. Tanımlayıcı istatistik sonuçlarına göre araştırma kapsamında en çok izlenilir olduğu 2022 yılı verilerine göre tespit edilen hiçbir kanal "Bilgilendirici, Eğitici-Öğretici, Renkli-Canlı ve Ailecek İzlenir" özelliğinde algılanmamaktadır. Araştırma kapsamında ki kanallardan 1'i "Gerçek Gündemi Yansıtan, Şeffaf, Tarafsız, Programları Kaliteli, Kendi Kültürünü Yansıtan", 2 kanal "Eğlenceli ve Güvenilir" 4 kanal da "Modern" özelliğinde algılanmaktadır. Kanalların bu özelliklerine ilişkin marka konumlandırmalarının karşılaştırılması ikili boyutlarda "Bilgilendirici ve Eğitici-Öğretici", "Renkli-Canlı ve Şeffaf", "Tarafsız ve Programları Kaliteli", "Kendi Kültürünü Yansıtan ve Modern", "Gerçek Gündemi Yansıtan ve Ailecek İzlenir", "Eğlenceli ve Güvenilir" olmak üzere algılama haritalarına dayalı yapılan analizlerden elde edilen uzay haritasında 4 segmentli bir yapı üzerinden belirlenmiştir. TV kanallarının aralarında ki rekabette bu karşılaştırmadan elde edilen sonuçlara göre, izleyici pazarını göz önünde bulundurmaları ve marka konumlandırmalarını bu özelliklere göre geliştirmeleri önerilmektedir. .This study aims to analyze the brand positions of the most-watched television channels as of 2022, which hold a significant place in the media platform, by comparing perception maps based on how they are perceived in terms of specific characteristics. According to the descriptive statistical results, none of the channels identified as the most-watched in 2022 were perceived as "Informative, Educational-Instructive, Colorful-Lively, and Family-Friendly." Among the channels included in the study, one channel is perceived as "Reflecting Real Agenda, Transparent, Unbiased, High-Quality Programs, Reflecting Its Own Culture," two channels as "Entertaining and Reliable," and four channels as "Modern." The comparison of brand positioning of these channels in relation to these characteristics was determined on a four-segment structure on a spatial map obtained from the analyses based on perception maps in dual dimensions as "Informative and Educational-Instructive," "Colorful-Lively and Transparent," "Unbiased and High-Quality Programs," "Reflecting Its Own Culture and Modern," "Reflecting Real Agenda and Family-Friendly," and "Entertaining and Reliable." In the competition among TV channels, it is recommended that they consider the viewer market based on the results obtained from this comparison and develop their brand positions according to these characteristics

Pedal curves obtained from Frenet vector of a space curve and Smarandache curves belonging to these curves

In this study, first the pedal curves as the geometric locus of perpendicular projections to the Frenet vectors of a space curve were defined and the Frenet vectors, curvature, and torsion of these pedal curves were calculated. Second, for each pedal curve, Smarandache curves were defined by taking the Frenet vectors as position vectors. Finally, the expressions of Frenet vectors, curvature, and torsion related to the main curves were obtained for each Smarandache curve. Thus, new curves were added to the curve family