Aksaray Üniversitesi Kurumsal Akademik Arşivi
DSpace@Aksaray, Aksaray 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
Spatial diversity, patterns of forest vegetation, and sustainability analysis of the murree mountains of western himalayas
(Springer International Publishing, 2022) Rahman, Amjad; Gürbüz, Esra; Chen, Jiquan; Ekercin, Semih
Murree Forest Division (MFD) is a part of western Himalayan range in Rawalpindi, Pakistan. An ecological field inventory was carried out. In all 454 vascular plants from 294 genera and 98 families were reported. The dominant families were Poaceae (54%, 53 spp.), Asteraceae (38%, 37 spp.), Papilionaceae, Lamiaceae, and Rosaceae (21%, 21 spp.), and Apocynaceae, Cyperaceae, and Ranunculaceae (12%, 12 spp.). The leading genera were Galium, Geranium, Rosa, and Swertia (six spp.) followed by Carex, Clematis, Quercus, and Ranunculus (five spp. each). There were 70 trees, 85 shrubs, and 299 herbs-climbers. Forest vegetation is under strong pressure. The plants in these forests are used for medicinal purposes, as wild fruits, vegetables, fuelwood, timber wood, fodder, roof thatching, agricultural tool making, fences/hedges, honeybee, and evil repellent evaluations. The vegetation is more affected by temperature, wind speed, and relative humidity and anthropogenic pressures. Forest structure has deteriorated due to poor regeneration potential. Continuous rise in temperature and other impacts can lead to eradication of endangered and endemic plants. The invasive plants are pushing upward the timberline. This study will enlighten these factors and possible recommendations.
Finite element analyses of a TLA-type synchronus reluctance machine
(Institute of Electrical and Electronics Engineers Inc., 2022) Özdil, Ali; Uzun, Yunus
Generating energy efficient and eco-friendly electrical machines has been recently focused by researchers due to rapid decline in energy sources and increase in greenhouse gas effect. Since Inductance Machines have some drawbacks: low torque capability, low efficiency hence high energy consumption, and high carbon dioxide emission, designing Synchronous Reluctance Machines is crucial to overcome these drawbacks of Inductance Machines. Synchronous Reluctance Machines have attractive features: higher torque capability, enhanced efficiency, reduced greenhouse gas emission, longer lifetime and maintenance period comparing with Inductance Machines. In this study, flux barrier number, shape of flux barriers and rotor position effects on machine's performance is carried out by Finite Element Analyses. The analyses has concluded that the hyperbolic shaped machine with four barriers is the optimum design considering performance parameters and rotor position considerably affects torque, saliency ratio, power factor and efficiency of machines.
The assessment of plasma asprosin levels in acute coronary artery disease and its correlation with HEART score
(National Scientific Medical Center, 2022) Algın, Abdullah; Özdemir, Serdar; Akça, Hatice Şeyma; Hokenek, Nihat Mujdat; Kokulu, Kamil; Erdoğan, Mehmet Özgür; Yumrutaş, Önder
Objective: It was aimed to compare the serum asprosin levels in patients with ischemic heart disease with healthy subjects, and to evaluate the relationship between asprosin levels with HEART score and mortality in the patients with coronary heart disease. Material and methods: This study was designed as a single-center, prospective study. Sixty-two patients who presented with acute chest pain and underwent digital subtraction coronary angiography and 31 healthy subjects were included in the study. Fasting serum asprosin levels were compared between patients and healthy individuals. The HEART score was calculated for each individual, and its relations with asprosin and one-month mortality were evaluated. Results: The minimum age of 93 cases included in the study was 24, the maximum age was 85, and the median age was 64. HEART score was higher in cases who had mortality within one month (p<0.0001). Plasma asprosin values were higher in patients with one-month mortality (p<0.0001) and lower in the control group compared to the study group (p=0.015). There is a statistically significant weak positive correlation between HEART score and asprosin value (p=0.006, r=0.285). Conclusion: Serum asprosin level can be used both diagnostically and as a biochemical marker in the evaluation of mortality and prognosis in patients with ischemic heart disease.
Reasons for high adsorption efficiencies in lead removal from aquatic solution
(MDPI, 2022) Çelebi, Hakan; Bahadır, Tolga; Şimşek, İsmail; Tulun, Şevket
Heavy metals are of great concern worldwide in terms of environmental pollution due to their effects, such as persistence in the environment, bioaccumulation, and toxicity for organisms. These pollutants in a non-biodegradable inorganic form are released into water, soil, and air from different industrial sectors Lead ions are also a toxic heavy metal in terms of human health and this pollutant is permanent in the ecosystem. Among the many treatment methods, adsorption is an inexpensive, eco-friendly, and efficient process for removing Pb ions from water contaminated with lead ions. The most important detail that draws attention both in our research of the literature and in our own studies is that very high removal efficiencies of lead ions can be obtained with many different inorganic and organic adsorbents. Such high removal efficiencies cannot be obtained for other heavy metals and metalloids. Therefore, this study aimed to reveal the difference in the adsorption process of lead. The physicochemical and biological properties of lead ions and the effects of specific properties, such as amphoteric structure, free electron, post-transition metal, and the low melting temperature, were investigated accordingly.
Teacher education in Turkey from past to present
(Springer Nature, 2022) Köklü Yaylacı, Hasret; Özyıldırım Gümüş, Feride
The teacher education policies developed and implemented by a country are of key importance for its education system. Effective education policies, which can be followed over years for social, political, economic, and environmental reasons, may result in sustainable development that benefits current and next generation’s well-being. Therefore, all countries should construct their education policies and philosophies in terms of their needs, cultures, economic conditions, and the requirements of their geographical structure. These needs and requirements may change over time, and accordingly, the adopted education philosophy and teacher education systems can be revised. In order to talk about teacher education in Turkey, first, the history of teacher education, which started with the establishment of the Republic of Turkey in 1923, will be discussed. Subsequently, the curricula used throughout the history of teacher education and the assessment methods adopted within the framework of these curricula will be examined. Then, the preferred teaching and learning approaches that shaped Turkish education curricula will be explained. Lastly, the professional development of teachers and pedagogical innovations and practices that enable effective teaching and engage students’ in learning will be elaborated.
