Siirt Üniversitesi Kurumsal Akademik Arşivi
DSpace@Siirt, Siirt Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Skull morphology in native and non-native cattle breeds in Türkiye.
(2025-02-23) Gündemir, Ozan; Manuta, Nicoleta; Güzel, Barış Can; Bakıcı, Caner; Duro, Sokol; Ünal, Burak; Çakar, Buket; Szara, Tomasz
This study aims to investigate morphological differences in the skulls of cattle breeds with different functional roles and geographical origins and to examine skull shape variations among breeds using geometric morphometrics methods. To this end, 95 skulls from Native (Eastern Anatolian Red and Southern Anatolian Red) and Non-native (Holstein and Simmental) breeds raised in Türkiye were analyzed. The results show a significant size difference between Native Breeds and Non-native Breeds, with the Non-native Breeds having larger skulls. The results also indicate considerable shape differences between Native and Non-native Breeds. No significant shape differences were observed between the two Native Breeds, which have shared the same geography for many years. Although no statistically substantial size difference was found between Simmental and Holstein, the nuchal region showed distinct shape differences. The nuchal part of the Simmental skull was more pronounced than other specimens. In native breeds, there was a more balanced proportion between the facial and neurocranial regions compared to the other two breeds. In Holstein skulls, the facial region was more pronounced in comparison to the neurocranial region, while in Simmental skulls, the neurocranial region was more prominent. This study provides valuable insights into the morphological characteristics of different cattle breeds, contributing to veterinary anatomy, biology, and paleontology.
A new plentiful solutions for nanosolitons of ionic (NSIW) waves spread the length of microtubules in (MLC) living cells
(Springer Science and Business Media LLC, 2025-02-20) Loubna Ouahid; M. A. Abdou; Jameelah S. Al Shahrani; A. Mohamed Abdel-Baset; Ali Akgül; Murad Khan Hassani
This article describes the developed Paul-Painlike method (PPM) to provide striking ODE of the nanosoliton of the ionic waves (NSIW) that spread the length of microtubules in live cells. Furthermore, Auxiliary Equation Approach (AEA) and Sardar Sub Equation Approach (SSEA) have been utilized similarly and concurrently to determine solutions for this particular model. In providing a physical explanation, various solitary wave structures are visually represented. These solutions include the anti-kink, kink shape, singular kink wave shape, and periodic bright, bright-dark and dark-singular soliton solution. Additionally, graphical illustrations (both 2-D and 3-D) demonstrate how the various parameters utilized affect the validity of analytical results. Furthermore, the uniqueness of the solutions we derived is highlighted by comparing the differences with earlier solutions of the model. The solutions produced may be beneficial in a number of significant investigations in medicine, as well as biology. The results demonstrate the effectiveness of the proposed techniques for determining many optical solitons of nonlinear evolution equations.
Investigation of the effects of propofol and sevoflurane anesthesia on oxidant-antioxidant status and biochemical parameters in Turkish hair goats
(American Veterinary Medical Association (AVMA), 2025-02-17) Ali Gülaydın; Kıvanç İrak; Nihat Şındak; Mustafa Barış Akgül; Özgür Yaşar Çelik; Onur Yıldırım; Maruf Yılmaz; Erman Gülendağ
Objective: To investigate the effects of propofol and sevoflurane anesthesia on the oxidant-antioxidant status and biochemical parameters in Turkish hair goats.
Methods: The study was conducted from February 15 through March 15, 2024. Seven clinically healthy female Turkish hair goats aged 1 to 2 years with an average live weight of 29.95 (26.1 to 33.8) kg were included. A bolus of propofol (6 mg/kg) was injected IV. The goats were placed in the sternoabdominal position and administered 1% to 3% sevoflurane with 100% oxygen for 2 hours with the help of a vaporizer. Blood samples were collected before and after the administration of propofol and at the 15th, 30th, 60th, and 120th minutes after the start of sevoflurane administration in nonanticoagulated tubes. The oxidant-antioxidant status (serum total antioxidant status, total oxidant status, paraoxonase activity, and arylesterase activity) and biochemical parameters (levels of glucose, AST, GGT, ALT, ALP, LDH, creatine kinase, amylase, lipase, creatinine, urea, uric acid, high-density lipoprotein, low-density lipoprotein, total protein, albumin, total bilirubin, direct bilirubin, magnesium, chlorine, calcium, iron, sodium, phosphorus, and potassium) were evaluated. The heart rate, respiratory rate, and body temperature of the goats were measured using a bedside monitor.
Results: Arylesterase activity increased with sevoflurane administration. Changes were observed in heart rate and body temperature as well as in the levels of glucose, creatine kinase, urea, total bilirubin, and potassium at different time intervals of propofol-sevoflurane administration.
Conclusions: Propofol-sevoflurane anesthesia has no adverse effects on oxidant-antioxidant status in Turkish hair goats.
Clinical relevance: The evaluation of heart rate and body temperature, as well as glucose, creatine kinase, urea, total bilirubin, and potassium levels, must be considered in propofol-sevoflurane anesthesia protocol.
Thermal annealing optimization for improved mechanical performance of PLA parts produced via 3D printing
(Elsevier BV, 2025-03) Çağlar Kahya; Oğuz Tunçel; Onur Çavuşoğlu; Kenan Tüfekci
This study employs an integrated approach using Taguchi, ANOVA, and Grey Relational Analysis to optimize the mechanical performance of PLA parts produced via Fused Filament Fabrication through controlled thermal annealing. The analysis examines the effects of annealing temperature and time on tensile, flexural, compressive, and impact strengths, aiming to identify optimal post-processing conditions for improved material properties. Annealing temperatures ranged from 70 °C to 110 °C, and durations varied between 40 and 200 min. Key findings indicate that the most influential parameters were achieved at 90 °C for 120 min, yielding notable enhancements in tensile strength, flexural strength, compressive strength, and impact resistance. The Taguchi method identified optimal conditions for each mechanical property, with temperature emerging as the most influential factor. ANOVA analysis further quantified the contribution ratio of temperature and time, validating the Taguchi results and confirming that temperature accounted for most of the variation in mechanical performance. Differential Scanning Calorimetry supported these findings, showing increased crystallinity in PLA, thus highlighting the significant impact of optimized thermal annealing on enhancing 3D-printed PLA parts.
Multi-objective spatial decision-making model for the sustainability of bioenergy facilities in rural areas: A case study in Türkiye
(Elsevier BV, 2025-03) Ahmet Sekeroglu; Eda Kocak Giyak
This study aims to present the spatial approach and model for ensuring the sustainability of bioenergy facilities based on agricultural and animal biomass resources in rural areas. The case study encompasses a two-stage spatial decision-making approach. The first stage involves evaluating biomass resources based on production area parameters to determine the regional sustainable potential index (SPI) value. The second stage involves the site selection suitability index (SSSI) process, which considers economic, environmental, technical, and planning parameters in the area with the highest SPI value. The spatial decision-making model, based on the fuzzy logic-GIS relationship, was implemented in ArcGIS Pro software using fuzzy GAMMA and fuzzy AND operators. The study found that the fuzzy GAMMA operator diversifies spatial decision-making alternatives, whereas the fuzzy AND operator produces rational results for identifying the best alternative in the decision-making process. Within the scope of the study, the developed model based on fuzzy GAMMA-AND integration expands the range of alternatives and yields successful spatial outcomes in identifying the optimal location and alternative options. The GIS-based approach based on fuzzy AND-GAMMA integration has provided decision-makers with a significant framework for site selection of bioenergy facilities and rural sustainability, yielding successful results. The developed spatial approach and model emphasize the multi-objective nature of decision-making processes, demonstrating the applicability and success of objective decision-making.
