ABSTRACTSterilization techniques that are used for polymer based 3D scaffolds are uneffective and changes polymer chemical and mechanical properties. Cold atmospheric plasma is well-known antimicrobial agent that is the fourth state of matter. In this study, antimicrobial effect, cold atmospheric plasma effects on cell viability and polymer structure were investigated as an alternative method for sterilization techniques used in polymer sterilization. Firstly, the antimicrobial effect of cold atmospheric plasma on both bacteria E. coli and S. aureus was determined. Two different antimicrobial ...Daha fazlası
ABSTRACTNanofluids are produced by the addition of nano-sized particles to the base fluid in order to increase the thermal conductivity of heat transfer fluids. Preparation of stable nanofluids with high thermal conductivity is a very complex process and their usage in heat transfer applications are related to many important parameters from the stability of nanofluids to their viscosity. Optimization of these parameters is essential for the practical use of nanofluids. The objectives of this study are to successfully preparecarbon-based nanofluids while investigating the stability mechanisms a ...Daha fazlası
Özet:Küresel çevre sorunları, biyo-temelli malzemelere olan ilginin artmasına neden olmuştur. Yenilenebilir hammaddelere odaklanmak, biyolojik olarak parçalanabilir veya makul bir maliyette geri dönüştürülebilir malzemelerle uğraşmayı sağlayabilir.Çevre dostu malzemelere olan talebin artması ve geleneksel liflerin maliyetini azaltma isteği sonucunda, birçok doğal lif kompoziti geliştirilmiştir.Keten, kenevir, muz,pamuk, hindistan cevizi, sisal ve jüt gibi doğal lifler bilim ve teknoloji ile uğraşan kişilerin tüketim malları, düşük maliyetli konutlar ve diğer sivil yapılardaki uygulamalar için ...Daha fazlası
ABSTRACTIn this thesis, a new design of the modular robot manipulator and its control with Robot Operating System is presented. The modules are designed to have an adjustable twist angle, which enables to create different robot manipulator configurations. Kinematic synthesis on the gripper module is conducted and structural parameters of the gripper is determined. Axis sets on the modules are determined by Denavit-Hartenberg method. Inverse and forward kinematic analysis and singularity analysis are performed. Numerical inverse kinematic solver is proposed for modular robot manipulators with m ...Daha fazlası
Özet:Bu tez çalışmasında, dairesel en kesitli farklı çaptaki köprü ayakları etrafında oluşan yerel oyulmaların temiz su oyulması durumunda deneysel olarak araştırılması gerçekleştirilmiştir. Deneyler, İzmir Kâtip Çelebi Üniversitesi Mühendislik Mimarlık Fakültesi İnşaat Mühendisliği Bölümü Hidrolik Laboratuvarı'nda, 15 m uzunluğunda 120 cm genişliğinde dikdörtgen şeklinde yatay bir kanalda uniform taban malzemesi serilerek, farklı çapta şeffaf pleksiglastan yapılma dairesel en kesitli köprü ayakları kullanılarak gerçekleştirilmiştir. Deney başlangıcından bitimine kadar kaydedilen videolardaki ...Daha fazlası
ABSTRACTTattoo has been used as a method of self-expression of mankind since ancient times. The tattoo removal process with primitive methods is based on the process of peeling the skin layer on which the tattoo is placed. Besides being used today, laser is preferred by more people. The tattoo removal with laser is based on disintegration into smaller pieces by breaking the target tattoo pigment by absorbing the transmitted beam. It is then transferred to the nearest lymph node or disintegrated by the macrophages by means of blood or lymph circulation. The most common difficulty with laser tat ...Daha fazlası
Özet:Malzeme seçimi günlük yaşantımızda önemli bir role sahip olmasının yanısıra mühendislik uygulamalarında ve tasarımlarında ürün sürdürülebilirliği açısından da önemlidir. Özellikle, çevre dostu malzemelerin önemi günümüzde artmaktadır.Bu bağlamda, endüstriyel uygulama alanları ve eşsiz özelliklerinden ötürü ahşap takviyeli kompozit malzemelerin önemi artmaktadır. Ağaç popüler doğal liflerdir. Bunlar kullanılabilir, yenilenebilir, düşük yoğunlukta, hafif, bulunabilir ve ugyun fiyata sahip olma gibi özelliklerinin yanı sıra tatmin edici mekanik özellikleri onları kompozit üretiminde kullanıl ...Daha fazlası
ABSTRACTCarbonaceous materials have attracted a tremendous amount of attention during the last decades due to their outstanding properties for a variety of applications. Among them, carbon fibers are state of the art materials with excellent physical, mechanical, electrical, thermal and chemical properties. Especially the thermal and electrical properties of carbon fibers combined with other prominent characteristics enable them to be employed as an effective heating element. Regarding to this motivation, in this study, it is mainly aimed to fabricate carbon fiber based heating elements and to ...Daha fazlası
ABSTRACTIn this study, a detailed literature study has been conducted about radio frequency energy harvesting systems, and two different RF energy harvesting system designs are presented operated two different bands. RF energy harvesting systems have been in our lives for more than fifty years. The number of studies carried out on these systems has increased, especially to meet the power requirements of low power consumption devices whose usage is growing with the developing technology in recent years. In the literature, RF energy harvesting systems have been generally designed to operate in t ...Daha fazlası
ABSTRACTUrban regeneration projects studied extensively in the world and Europe is a new subject in Turkey. When we look at the examples in the world, their main focus has always been human-oriented. These types of projects should take into account the city's authentic memory and texture, depending primarily on the physical, social, cultural and economic structure. The theme of the project should be determined considering local, social, cultural and physical principles. Ecological values should be decisive in the project's outset, course and outcome. Regeneration projects can actually be consi ...Daha fazlası
ABSTRACTIn this thesis, an Arduino extension board (shield) is designed to take theelectrocardiography (ECG) signals. Firstly, the positive and negative terminals of an ECG signal are selected to determine which input pins are connected to these terminals. User can select one of eight possible inputs for each terminal, which means the user can apply one of the possible 64 channel combinations to inputs of the design. Then a dedicated instrumental amplifier amplifies the signal. The voltagegain of the amplifier can be selectable among available options. The amplified ECG signal is filtered in a ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.