ÖZETGünümüzde, endüstri ve tarım sektöründe yapılan faaliyetler sonucu sulardaki ağır metal seviyeleri artmaktadır. Sucul organizmaları etkileyen ağır metaller kara ve suda yaşayan organizmaların vücutlarında toksik madde birikimine neden olmaktadır. Ayrıca, sulardaki müsilaj kitle içerisinde toksin ve ağır metal seviyesi yüksek olduğundan balıkların insanlar tarafından tüketimi oldukça tehlikelidir. Özellikle Hg2, Cd2, Cu2 ve Pb2 ağır metalleri, yüksek toksisite ve besin zincirindeki birikme eğilimlerinden dolayı insan sağlığını tehdit etmektedir. Balıklardaki toksik ağır metal birikimi güven ...Daha fazlası
ABSTRACTEnergy has become one of the main problems of humanity after the industrial revolution and the rapid rise in world population. Most energy resources depend on fossil fuels, which causes environmental problems. Solar energy is a clean and sustainable alternative to the increasing world energy demand. In this context, perovskite solar cells (PSCs) are particularly attractive due to ability to achieve very high efficiencies. The power conversion efficiency (PCE) of PSCs has rapidly grown from 3.8 in 2009 to over 25.5 in 2022, which making it fastest advancing solar cell technology to date ...Daha fazlası
ABSTRACTBiologically relevant molecules such as glucose, hydrogen peroxide, and dopamine are important for human body and directly affect some bodily functions. Sensitive measurement of these molecules enables humans to prevent some serious problems arising from abnormal levels of these molecules. In this thesis, glucose and dopamine were measured using screen-printed electrodes (SPE) modified with various types ofcarbon-based nanomaterials. The SPEs used here are commercially availableelectrodes in which all the necessary components (working, counter and reference electrodes) for the measurem ...Daha fazlası
ABSTRACTCoal is one of the most important energy resources used in many countries for decades to produce energy. A type of fire called coal fires occurs when the coal surface is exposed to sunlight and in contact with oxygen for a long time in coal mine areas where coal is extracted. Coal fires are prevalent and critical incidents for most coal mining areas around the world. Various problems arise due to coal fires in coal mines. These problems affect many factors such as environment, society, economy and security directly or indirectly. Burning coal fire causes the formation of poisonous gase ...Daha fazlası
ABSTRACTIndustrial robots currently used in industry all have their own interfaces and unique languages. These commonly used interfaces and languages are often limited to industry needs. Although there are several robotic solutions, practically all of them can't rectify problems on their own. When a program is required for a more complex task, machine vision locates objects and puts them in desired locations and for situations such as applying the correct force for assembly operations by measuring with force-torque sensors, they often need third-party programs as existing systems cannot respon ...Daha fazlası
ABSTRACTWhile droplet moves over surfaces, various structures are observed
cusp and corner formation, pearling, pinning/depinning, to name a few. We develop a finite element method (FEM) based solver to analyze three-dimensional motion of slender droplets over several substrates. To get accurate results within a feasible computation time, an adaptive mesh refinement (AMR) based on non-conformal, balanced and preload quadtree mesh structure is embedded within our quadratic FEM solver to focus our computational power on specific regions like contact lines. We validate our solver with the power-l ...Daha fazlası
ÖZETBu tez çalışmasında
çalgı yapımında kullanımı sıkça tercih edilen dut (Morus spp) ve servi (Cypruss spp) odunlarından elde edilmiş küçük boyutlu ve klasik kemençe yapımı için kullanılacak odun örnekleri propiyonik anhidrit ile kimyasal modifikasyon işlemine tabi tutulmuştur. Kimyasal modifikasyon işlemi uygulanan küçük boyutlu odun örneklerinde meydana gelen ağırlık kazancı (WPG ()) değerleri, şişme katsayı (S ()) değerleri ve şişme karşısında etkinlik (ASE ()) değerleri hesaplanıp belirlenmiştir. Kimyasal modifikasyon işlemi uygulanan büyük boyutlu odun örneklerinden klasik kemençe üretil ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.