Development of Multi-Walled Carbon Nanotube-Based Flexible Screen-Printed Disposable Electrodes for Sensor Applications

Submitted to the Graduate School of Natural and Applied Sciences in partial fulfillment of the requirements for the degree of

Millions of people worldwide suffer from diabetes and diseases caused by diabetes. As a result of the statistical studies carried out by the World Health Organization (WHO), the number of people suffering from diabetes was 108 million in 1980, then it was increased to 422 million in 2014. Diabetes is increasing rapidly, particularly in underdeveloped and developing countries and it was predicted that 1.5 million people died because of it only in 2019 (WHO, 2021).

Dip Coating of Metal Implants with Antibacterial Polymer Matrix for the Prevention of Implant Associated Infections

Emine Hilal Altıntop

The recent increase in life expectancy and changing living conditions have led to a rise in developments regarding implants, particularly in orthopedic implants. It is important to note that this statement is based on objective evidence and not subjective evaluations. Despite these advances, issues with metallic implants such as Ti, Ti alloy, Co-Cr alloy, and stainless steel (AISI 316L), which are currently preferred, persist. There are several limitations to implant materials, including corrosion due to the physiological environment, bacterial infection, and biofilm formation. Although ...Daha fazlası

The Malnutrition Risk and Physical Activities in Home-Dwelling Older Adults During the COVID-19: A Cross-Sectional Study

Objective: During the COVID-19 pandemic, elderly adults’ nutritional habits, physical activity levels and the levels of malnutrition were affected. This study investigated the prevalence of malnutrition and physical fitness and exercise activity levels in home dwelling elderly during the COVID-19 pandemic. Material and Method: This cross-sectional study was conducted with a face-to-face questionnaire on 670 (male: 241, female: 429) home-dwelling older adults with a mean age of 70.66±5.83 years. The nutritional screening and evaluation were performed using Mini Nutritional Assessment (MNA), and ...Daha fazlası

Effect of LED-mediatedphotobiomodulation therapy on orthodontic tooth movement and root resorption in rats

TANCAN UYSAL

The aim of this experimental study was to evaluate the effects of light-emitting diode-mediated-photobiomodulation therapy (LPT), on the rate of orthodontic tooth movement (TM) and orthodontically induced root resorption, in rats. Twentymale 12-week-oldWistar rats were separated into two groups (control and LPT) and 50 cN of force was applied between maxillary left molar and incisor with a coil spring. In the treatment group, LPT was applied with an energy density of 20 mW/cm2 over a period of 10 consecutive days directly over the movement of the first molar teeth area. The distance b ...Daha fazlası

Evaluation of alveolar bone loss following rapid maxillary expansion using cone-beam computed tomography

ASLI BAYSAL | İLKNUR VELİ | MEHMET İRFAN KARADEDE

Objective: To evaluate the changes in cortical bone thickness, alveolar bone height, and the incidence of dehiscence and fenestration in the surrounding alveolar bone of posterior teeth after rapid maxillary expansion (RME) treatment using cone-beam computed tomography (CBCT). Methods: The CBCT records of 20 subjects (9 boys, mean age: 13.97 ± 1.17 years; 11 girls, mean age: 13.53 ± 2.12 year) that underwent RME were selected from the archives. CBCT scans had been taken before (T1) and after (T2) the RME. Moreover, 10 of the subjects had 6-month retention (T3) records. We used th ...Daha fazlası

Darbeli elektromanyetik alanların yüksek çözünürlüklü kablosuz sensor ağı ile araştırılması

Bardak, Merve

ÖZETDarbeli elektromanyetik alanların iyileştirici özelliklerini gösteren birçok çalışma vardır. Elektromanyetik alan tedavilerinin iyileştirici özellikleri kemik, yumuşak ve kanser dokusu gibi çeşitli dokularda gözlenmiştir. Darbeli elektromanyetik alanlar, yan etkileri olmayan ve düşük enerji seviyelerinden dolayı zarar vermeyen elektromanyetik uyarma olarak kabul edilir. Dokuların iyon aktivitelerini, kan dolaşımını hızlandırarak tedaviye yardımcı olduğu kabul edilir. Darbeli elektromanyetik alan tedavisi farklı frekanslarda, dalga formlarında, genlikte ve maruz kalma süresinde biyolojik do ...Daha fazlası

Investigating the Relationship of Age, Gender, and Lateralization with Elbow Joint Proprioception

Kevser SEVİK KAÇMAZ

Objective: Decreased or impaired proprioceptive sense may cause abnormal loading, increased risk of injury, and risk to personal safety. The aim of this study is to examine the relationship between elbow joint proprioception with age, gender, and dominance. Material and Method: One hundred and twenty nine asymptomatic individuals aged 18-65 years were included in the study. Elbow joint proprioception measurement was performed with joint position sense error measurement. Results: The mean age of the individuals was 30.80±13.29 years. 79 of them were female and 50 of them were male. 9 individual ...Daha fazlası

Post-Earthquake Spinal Cord Injury: Role of Physiotherapy and Rehabilitation

TURHAN KAHRAMAN

This review examines the crucial role of physiotherapy and rehabilitation in the management of post-earthquake spinal cord injuries (SCI). After an earthquake, patients with SCI require specialized and intensive rehabilitation programs to promote recovery, prevent complications, and enhance their quality of life. This article reviews the pathophysiology of post-earthquake SCI, the various clinical and functional assessments used to evaluate severity, and the different treatment options available including pharmacotherapy, surgical interventions, and rehabilitation. This review discusses the ch ...Daha fazlası

Investigation of changes in the formation and types of non-metallic inclusions in the steel production process Çelik üretim sürecinde oluşan metal olmayan kalıntıların oluşumu ve değişimlerinin incelenmesi

Bakar, İbrahim

ABSTRACTIt is not possible to produce steel without inclusions as the process for steel production requires. Based on this fact, the researches on clean steel are concentrated on the reduction of inclusions and transformation of inclusions into harmless state by modification. The definition of steel cleanness is related to final product application. Non-metallic inclusion, in the liquid steel, causing many problems and production lost in steel production process and final application. Aluminum killed steels mostly contain Al2O3 and MnS inclusions. Al2O3 inclusions are formed during de-oxidatio ...Daha fazlası

Numerical investigation of inverse magnus effect on a circular cylinder by controlling azimuthal circulation distribution Ters magnus etkisinin çevresel sirkülasyon dağılımı kontrolü ile dairesel silindir üzerinde sayısal olarak incelenmesi

Çelik, Acar

ÖZETMagnus etkisi, belirli koşullarda ortaya çıkan fiziksel bir olgudur. Bu fenomeni gözlemlemek için, bir akış ortamına daldırılmış dönen bir gövdeye (genellikle küre veya silindir) sahip olmak gerekir. Geri çekilme tarafındaki akış (gövdenin akışla aynı yönde hareket eden tarafı) dönüş yönünde yön değiştirir ve ters yönde etki eden bir tepki kuvveti (diğer bir deyişle kaldırma kuvveti) oluşturur. Ters Magnus etkisinde ise kuvvet tam zıt yönde oluşmaktadır. Kritik Reynolds sayısı ve dönme oranı aralıklarında, geri çekilen taraftaki akış laminer olma eğilimindedir ve bu da erken akış ayrılması ...Daha fazlası

The Relationship of Adherence to the Mediterranean Diet, Dietary Inflammatory Index and Nutrient Intake in University Students: A Cross-Sectional Study

Objective: Investigating the relationships between dietary inflammatory index (DII), nutrient intake, and adherence to the Mediterranean diet (MD) of university students was aimed in the present study. Material and Method: A questionnaire consisting of socio-demographic characteristics, the Mediterranean Diet Adherence Screener (MEDAS), the 24-hour food record, and the DII scoring was completed by undergraduate students in Uskudar University. Results: A total of 750 students (52.3% male, mean age= 21.6±2.2 years, mean body mass index= 23.97±2.63 kg/m2) were included in the study. Half (50.7%) ...Daha fazlası

Online learning stable adaptive controller for chaos control of bldc motor Fırçasız motorun kaos kontrolü için çevrimiçi öğrenen kararlı adaptif kontrolör

Gökçen, Alkım

ABSTRACTThis thesis presents an online learning stable robust adaptive controller design for the chaos control of the brushless direct current (BLDC) motor. The proposed adaptive controller algorithm consists of a Wiener model-based controller with a nonlinear auto-regressive moving-average (NARMA) based artificial neural network (ANN), and a Hammerstein based plant model. The developed online learning closed-loop control system providing stability and robustness might be defined as an auto-regressive moving average (ARMA) based system identification problem with partially known parameters. Th ...Daha fazlası