Yeditepe University

Six Sigma application in the aerospace and aviation industry: A case study

This study examines the application of the Six Sigma Define–Measure–Analyze–Improve–Control (DMAIC) methodology to reduce weld seam and internal structural defects in titanium tube welding within the aerospace and aviation industry. A case study approach was conducted in an aeros...

Impact of PGPR-enriched tuff on biochemical characteristics, antioxidant enzyme activities and hormonal responses in walnut saplings

Walnut (Juglans regia L.) is one of the most economically important tree nuts worldwide due to its nutritional and health-promoting properties. The use of plant growth-promoting rhizobacteria (PGPR) in agriculture is increasing attention as a sustainable alternative to intensivel...

Medical Students’ Knowledge, Attitudes, and Behaviors Regarding Skin Cancer, Sun Exposure, and Vitamin D: An Evaluation for Curriculum Integration

Background: Skin cancer is among the most common preventable cancers worldwide, and adequate knowledge about sun exposure and Vitamin D is essential for early prevention. Medical students, as future physicians, should acquire appropriate knowledge and health-promoting behaviors d...

Enhanced enamel remineralization by a nanohydroxyapatite-fluoride biomimetic formulation: a comparative in vitro study

This study compared the remineralization efficacy of three commercially available biomimetic and bioactive formulations, including nHAP + NaF, CPP-ACP, and a biocalcium lactate-peroxidase (BioC), using surface microhardness (SMH) and scanning electron microscopy (SEM). Artificial...

Sensitivity and specificity of the CANTAB Paired Associates Learning test for identifying mild cognitive impairment

Mild cognitive impairment (MCI) is a stage between normal cognition and dementia, and timely diagnosis of this condition offers the opportunity for effective interventions to slow down the progression to dementia. The Mini-Mental Status Exam (MMSE) and the Montreal Cognitive Asse...

Humic Substances Enhance Waterlogging Tolerance in Eggplant Through Differential Regulation of Redox Homeostasis and Nutrient Acquisition

Eggplant (Solanum melongena L.), the world’s fifth most important vegetable crop, is highly sensitive to waterlogging (WL), which limits its productivity under climate-driven flooding events. This study evaluated whether humic acid (HA) and fulvic acid (FA) alleviate WL-induced s...

Tensile bond strength of soft and hard reline materials to conventional heat-polymerized, CAD-CAM milled, and 3D-printed denture base resins: an in vitro comparative study

Complete dentures require periodic relining to compensate for progressive alveolar ridge resorption and associated loss of denture retention and stability. With the increasing adoption of digitally fabricated dentures using milling and 3D printing technologies, understanding the...