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Investigation of Compressive Strength and Energy Absorption of Cylinder Corrugated Sandwich Structures with Different Geometric Configurations
Get PDFThe aim of this study is to numerically investigate and compare the compressive strength and energy absorption of CFRP composite cylinder sandwich structures with five different geometric configurations. The crushing performances (Peak crushing force (PCF), Mean crushing force (MCF), Crushing force efficiency (CFE), energy absorption (EA) and specific energy absorption (SEA)) of the composite cylinder for different core configurations and the failure types were determined. Compression analyses were performed in LS DYNA finite element program using MAT-54 material model with progressive failure analysis based on the combination of Hashin failure criterion, Cohesive Zone Model (CZM) and Bilinear traction-separation law. Among the five different specimens in the study, the highest PCF value was Trapeozidal with axial corrugated core while the lowest was Arc shaped with circular core. Axial arc shaped core was the sandwich structure with the highest SEA value, while circular sinusoidal corrugated core was the sandwich structure with the lowest SEA value. Between axial core and circular core, the CFE value of the sinusoidal core specimen was determined to be the highest. It was observed that the effect of core structure on the deformation behavior of sandwich structures was high
Determination of Agricultural-Based Biomass Energy Potential as a Sustainable Clean Energy Source: The Case of Muş Province (2020-2024)
Get PDFThis study aims to calculate the biomass energy potential that can be theoretically obtained from agricultural products for the Muş province between 2020-2024. In this context, calculations were made by taking into account the legumes, industrial plants, cereals, forage crops, oilseeds, and tubers grown in the region. The analyses are based on five-year data (2020–2024) obtained from the Plant Production Statistics Database of the Turkish Statistical Institute. Accordingly, the average biomass energy potentials were calculated in megawatts (MW). According to the results, the product groups with the highest biomass energy potential were grains and forage crops. When evaluated on a district basis, the Central district has the highest share (33,02%) and the Hasköy district has the lowest share (2,44%) in terms of 5-year average biomass energy potential. Considering all available biomass sources in Muş province, the estimated annual energy potential was determined to be 27.145 MW in 2020, 29.288 MW in 2021, 33.863 MW in 2022, 37.361 MW in 2023, and 40.608 MW in 2024. These findings show that Muş province has significant potential on both national and global scales in terms of sustainable and environmentally friendly biomass energy that can be produced from agricultural crops
Muş Ovası’ndaki Yerleşmelerin Mekânsal Gelişiminin (1984-2024) Tarım Arazileri Üzerindeki Etkisi
Get PDFDünya nüfusunun artış hızı farklı ülkelerde değişken olsa da artış eğilimini sürdürmektedir. Bununla birlikte dünyadaki nüfus hareketleri de ortaya çıkan ekonomik, siyasi, askeri, eğitim ve sağlık gibi sorunlar başta olmak üzere diğer bazı nedenlere bağlı olarak artmaktadır. Özellikle ulaşım, iletişim sistemlerinin gelişmesi ve çeşitlenmesi bu hareketi daha da arttırmıştır. Bu sorunların biri veya birkaçının etkili olduğu yerleşim birimlerinden başta büyük şehirler olmak üzere diğer şehirlere doğru göç yaşanmaktadır. Dolayısıyla göç alan şehirlerde ortaya çıkan mekânsal büyüme ihtiyacı ilave mesken, işyeri ve ulaşım sistemleri (havalimanı, karayolu, demiryolu, limanlar ve entegrasyon hat bağlantıları amacıyla arazi kullanımı) tarım arazilerinin amacı dışında kullanılmasına neden olmaktadır. Tarım arazilerinin yapılaşmaya açılması ve betonla kaplanması tarım topraklarının tahrip olmasına ve sürdürülebilirlikten uzaklaşması sonucunu doğurmaktadır. Türkiye’nin önemli tarım alanları arasında yer alan Muş Ovası yerleşme yayılışlarına maruz kalmıştır ve bu durum son yıllarda artarak devam etmektedir. Muş Ovası sınırları içerisinde başta Muş şehri olmak üzere iki ilçe merkezi sekiz belde ve elli üç köy kurulmuştur. Bu yerleşmelerin tarım arazilerine doğru yayılışı, bazı düzenlemelerle belirli yerlerde sınırlandırılmasına rağmen devam etmektedir. Muş Ovası’nın güney doğusunda yer alan ovanın bir kısmı da Bitlis ili Güroymak sınırı içerisinde yer almaktadır. Bu arazilerin bir kısmı bataklık sınıfında olup diğer kısmı ise başta Güroymak ilçesi ve on iki köy yerleşmesi Muş Ovası sınırları içerisinde yayılış göstermektedir. Muş Ovası’ndaki tarım alanlarının mesken bölgeleri, sanayi bölgeleri, hava limanı, kara ve demir yollarının kamu kurumları tarafından önemli oranda plansızca kullanılarak yok edildiği görülmektedir. Tarım arazilerinin bu amaçlarla kullanılması, zeminin yapılaşmaya uygun olmaması depremden etkilenme riskini arttırmaktadır. Bu çalışmada Muş Ovası tarım arazilerinin amacı dışında kullanıldığı ve yıllar içerisinde yerleşmelerin nasıl plansızca yayıldığı farklı dönemler kıyaslanarak ortaya konulmuştur. Araştırma sahası, ArcMap 10.5 kullanılarak lokasyon haritası ve 1984, 2004 ve 2024 yıllarına ait arazi kullanım haritaları çizilerek harita koordinatları UTM koordinat sistemiyle belirtilmiştir. Aynı zamanda ovada en büyük yayılış alanına sahip Muş Şehri’nin 1984, 2004 ve 2024 yıllarındaki yayılış sınırları Google Earth Pro üzerinde gösterilmiştir. Ayrıca, Muş Ovası’ndaki tarımsal araziler üzerindeki yerleşimlerin fotoğraflaması yapılmıştır. Bütün bu veri kaynaklarıyla analizler yapılarak bu durumun sürdürülebilirliği hakkında değerlendirmeler yapılmıştır
A highly selective carbazole-based D-π-D-A fluorescence turn-off sensor for Fe3+ detection in aqueous media
No full textIn this study, N-hexyl-6-(4-methoxyphenyl)carbazole-3-carbaldehyde with donor-it-donor-acceptor (D-it-D-A) structure was designated as a probe N and its fluorescence sensor properties were investigated against 30 different analytes. Probe N in DMSO gave a structureless emission band with a maximum at 470 nm and a high photoluminescence quantum yield (80 %). In going from non-polar to polar solvents, the emission maximum of probe N red-shifted by 72 nm and Stokes shifts observed between absorption and emission spectra was 71 nm (3689 cm-1). It was found that the emission maximum of probe N at 470 nm was more significantly quenched by Fe3+ than by Fe2+ among the analytes studied. Probe N showed high selectivity and high sensitivity with a 0.8 nM limit of detection (LOD) against Fe3+ in the presence of competing analytes. The LOD value is the lowest value reported so far for the detection of Fe3+. Job's plot indicated a 2:1 ratio between probe N and Fe3+. 1H NMR and FT-IR provided further evidence that probe N complexed Fe3+ via the non-bonding electrons on the oxygen atoms of the aldehyde and methoxy groups. In practical applications, probe N successfully detected Fe3+. These results revealed that probe N could be an effective turn-off fluorescence sensor in the determination of Fe3+ in liquid environments.Scientific Research Programme Unit (BAP) of Mus Alparslan University [BAP-24-EMF-4901-03]This work was supported by the Scientific Research Programme Unit (BAP) of Mus Alparslan University with number of BAP-24-EMF-4901-03
Examining the relationship between physical/kinesthetic intelligence and attitudes towards physical education course of middle school students in mardin province: The case of Mardin province
No full textBu araştırmanın amacı, Mardin/Artuklu ilçesindeki ortaokul öğrencilerinin bedensel/kinestetik zekâ ile beden eğitimi dersine yönelik tutum düzeylerini incelemektir. Araştırmanın örneklemi, 2022-2023 eğitim-öğretim yılında Mardin/Artuklu'da eğitim gören yaş ortalaması 12,41± 1,34 yıl olan 164 kadın, 12,48± 1,01 yıl 180 erkek toplam 344 öğrenci oluşturmaktadır. Veriler, Kişisel Bilgi Formu, Beden Eğitimi Dersi Tutum Ölçeği ve Bedensel/Kinestetik Zekâ Ölçeği ile toplanmıştır. Analizler, SPSS 24.0 programı kullanılarak Mann-Whitney U Testi ve Kruskal-Wallis H analizleri ile gerçekleştirilmiş ve bulgular p0,05), okul sporlarına katılım, bedensel kinestetik zeka ve beden eğitimi dersine tutum puanları üzerinde anlamlı bir etki yaratmıştır (p0.05), participation in school sports was found to have a significant effect on physical/kinesthetic intelligence and attitudes towards physical education courses (p<0.05). Additionally, a significant difference in physical/kinesthetic intelligence scores was observed between students with and without family members involved in sports (p<0.05). Maternal education level significantly impacted physical/kinesthetic intelligence scores, whereas no difference was found in attitudes towards physical education courses. Family income levels created a significant difference in physical/kinesthetic intelligence, but no notable effect on attitudes towards physical education courses was determined. In conclusion, it was observed that students' physical/kinesthetic intelligence and attitudes towards physical education courses are influenced by their social environment and family structure
Genetic biomarkers of skiers from the Oglago Tribe in Mus Province, Turkey An analysis of ACTN3, VEGF-A, and GABPB1 polymorphisms
Get PDFFor many years, the relationship between genetic variants and athletic performance has been studied in terms of their effect on strength, power, endurance, muscle fiber type and other phenotypes. As a result of such research, many genes have been found to be associated with athletic performance. In this context, the success achieved by skiers from the same tribe living in Mus (Turkey) is thought to be due to a genetic predisposition. Therefore, this study examined the relationship between the alpha-actinin-3 (ACTN3) gene rs1815739, vascular endothelial growth factor A (VEGF-A) rs2010963, and GA Binding Protein Transcription Factor Subunit Beta1 (GABPB1) rs7181866 polymorphisms and the success achieved by skiers from the Oglago tribe. The study included 19 skiers and 130 sedentary individuals from the same tribe. The Chi-squared (chi(2)) test and power analysis were used to analyze the genotype and allele distributions of ACTN3, VEGF-A, and GABPB1 polymorphisms in the group of skiers and in the control group. As a result of the analysis, no statistically significant difference was found between the genotype and allele distributions of ACTN3 and VEGF-A polymorphisms (P = .0659, .2018), while statistically significant differences were found across the groups in both the genotype and allele distributions of GABPB1 polymorphism (P < .001). In addition, the genotype and allele percentages of the ACTN3 (TT) and VEGF-A (CC) genotypes associated with endurance were found to be high. Summing up, the present study is the first to reveal the effect of genetics on skiing success in a genetically close cohort (Oglago tribe, Mus, Turkey). The results obtained were promising in terms of genetics and skiing success, but further studies are needed to deepen this relationship.MuscedilAlparslan University Scientific Research Projects Coordination Unit [BAP-20-BESYO-4901-03]This study was supported by Mu & scedil; Alparslan University Scientific Research Projects Coordination Unit with Project Number BAP-20-BESYO-4901-03
Yapay Zekânın Haber Üretim Sürecine Etkileri: Heliograf Teknolojisi ve Beyond Fake News Örnekleri Üzerine Bir Araştırma
Get PDFFake News Öz Bu çalışma, yapay zekâ teknolojilerinin haber üretim sürecine olan etkilerini incelemektedir. Yapay zekânın medya sektörüne entegrasyonu, haberlerin oluşturulma, doğrulama ve dağıtım süreçlerinde köklü dönüşümler meydana getirmiştir. Otomatik haber üretimi, büyük veri analizi ve kişiselleştirilmiş içerik sunumu gibi uygulamalar, medya kuruluşlarına hız ve verimlilik sağlamış; The Washington Post'un Heliograf teknolojisi ve BBC'nin Beyond Fake News projesi gibi örneklerle bu dönüşüm somut biçimde gözlemlenmiştir. Ancak, bu örneklerde yapay zekâ destekli haberciliğin beraberinde getirdiği etik, güvenilirlik ve algoritmik önyargılar gibi risklerinde ortaya çıktığı gözlemlenmiştir. Çalışmada, yapay zekânın haber üretim süreçlerine olumlu ve olumsuz etkileri kapsamlı şekilde ele alınarak, gazetecilik mesleğinin geleceğine yönelik çıkarımlarda bulunulmuştur. Araştırmada doküman analizi yöntemi kullanılarak, yapay zekâ tabanlı gazetecilik uygulamaları ve bu alandaki dönüşümler nitel bir perspektifle incelenmiştir. İnceleme sonucunda, yapay zekâ destekli sistemlerin haber üretiminde hız, verimlilik ve maliyet avantajları sağladığı tespit edilmiştir. Bununla birlikte, yapay zekâ tabanlı gazeteciliğin beraberinde getirdiği bazı riskler ve etik sorunlar da tespit edilmiştir
Synthesis, structure determination of Schiff bases and their PdII complexes and investigation of palladium catalyzed cross-coupling reactions
No full textTwo Schiff base ligands, S1 and S2, were synthesized from the reaction of 2-amino-5-ethyl-4-methylthiophene-3carbonitrile with 2-hydroxybenzaldehyde and 4-nitrobenzaldehyde were investigated for their coordination to PdCl2(CH3CN)2. The prepared ligands S1 and S2 and the PdII complexes 1 and 2 were characterized by using FTIR, 1H-13C NMR, UV-Vis, TGA, elemental analysis, molar conductivity, mass, and magnetic susceptibility. The characterization data agree well with the formulation of ligands S1 and S2 and PdII complexes 1 and 2. The geometries of the metal chelate were discussed with the help of magnetic and spectroscopic measurements. Finally, the catalytic potential of the synthesized PdII complexes for Suzuki-Miyaura and Mizoroki-Heck coupling reactions was investigated using GC-MS. As a result, it was observed that the PdII complexes are the active catalysts in suitable Suzuki-Miyaura and Mizoroki-Heck C-C coupling reactions.Scientific Research Coordination Unit of Mus Alparslan University [BAP-22-FEF-4902-05]; BAPThis study was supported by Scientific Research Coordination Unit of Mus Alparslan University. Project number: BAP-22-FEF-4902-05. The authors would like thank BAP's the financial support
COMPOSITION OF ESSENTIAL OIL OF TWO VARIETIES WILD MINT (MENTHA LONGIFOLIA SUBSP. TYPHOIDES VAR. CALLIANTHA, MENTHA LONGIFOLIA SUBSP. TYPHOIDES VAR. TYPHOIDES)
No full textTwo wild mint taxa Mentha longifolia L. Hudson subsp. typhoides (Briq) Harley var. calliantha (Stapf) Briq. and Mentha longifolia (L.) Hudson subsp. typhoides (Briq) Harley var. typhoides naturally growing in Mus province of Türkiye were cultivated in the experimental field of Mus Alparslan University in 2020 and 2022 growing seasons to determine essential oil content and compositions. According to the GC-MS analyses, 28 essential oil components were determined in the var. calliantha variety, with the pulegone (29.06%), caryophyllene oxide (14.28%), piperitone oxide (7.85%), thymol (5.98%), piperitenone (5.24%), β-linalool (5.23%), and linalyl acetate (4.28%) as main component. In the var. typhoides, 28 essential oil components were determined, and the main components were piperitenone oxide (31.57%), carvacrol (12.97%), linalool (11.63%), cis piperitone oxide (9.98%), α-pinene (5.51%) and borneol (3.44%). © 2025, Pakistan Botanical Society. All rights reserved
Hybrid Modification of Wheat Bran Using Microbial Processing and Ultrasound: Enhancements in Bran Composition and Bread Quality
Get PDFThis study investigates the effects of microbial bioprocessing (MB), ultrasound treatment (UT), and their combined application (hybrid method, HM) on the functional and nutritional enhancement of wheat bran (WB) and its impact on bread quality. MB was performed by using Saccharomyces cerevisiae with Levilactobacillus brevis LABE 32 (MB32) and Lactiplantibacillus plantarum LABE 29 (MB29). MB32 significantly increased soluble dietary fiber (SDF) and reduced phytic acid content by up to 25.7% when compared to the control. UT further decreased phytic acid content by 52.2% and enhanced phenolic compound release, contributing to improved antioxidant activity. The hybrid method (HM) demonstrated the strongest effect, reducing phytic acid content by 95% and enhancing antioxidant properties, including a 2.4-fold increase in bound antioxidant activity (bound-AA). Bread produced from modified WB showed improvements in specific volume (SV), texture, and nutritional composition. The HM-treated WB yielded bread with the highest SV, approximately 10% greater than the control, while MB29 produced significantly harder bread than other samples (p < 0.05). The HM-treated bread had the highest crust L* value and softest texture (p < 0.05). Nutritionally, only UT and HM treatments significantly increased the total dietary fiber (TDF) content, with the most pronounced increase observed in the HM treatment. Phytic acid degradation in the WB modified with MB32 and UT was in accordance with their breads, notably lowering phytic acid content. Additionally, MB32 and HM increased total phenolic content (TPC) and antioxidant activity, enhancing the bread's overall nutritional quality. In conclusion, the hybrid application of MB and UT (HM) proved to be the most effective in improving the functional and nutritional properties of WB and the resulting bread, including increased dietary fiber content, reduced phytic acid levels, and enhanced antioxidant activity.The Scientific and Technological Research Council of Turkiye (TUEBITAK) [122O874]This research was supported by The Scientific and Technological Research Council of Turkiye (TUEBITAK) with the project number of 122O874. The authors are grateful for their financial support