ABSTRACTOsteomyelitis is a disease in which the process of bone destruction and loss is caused by microorganisms. Osteomyelitis has an increasing incidence rate that could cause chronic and acute infections. Bone infection has caused recurrent and permanent damage in 40 of the patients. 2-5 of infections caused by medical devices used in orthopedic surgical operations are osteomyelitis. More than half of osteomyelitis cases are caused by gram-positive bacteria such as Staphylococcus aureus and Staphylococcus epidermidis. In order to prevent the occurance of osteomyelitis due to the medical dev ...Daha fazlası
ÖZETHidrolik ve pnömatik sistemlerin uzun süreli sorunsuz çalışmasında önemli bir etkiye sahip olan kılavuz elemanlar, hidrolik ve pnömatik silindirlerde eksene dik olan kuvvetlere direnerek metal-metal temasını önlemek için kullanılır. Kılavuz elemanlarda en sık kullanılan malzemelerden biri olan kompozit malzemelerde, fiber yönelimleri ve takviye malzeme oranları gibi farklı parametreler, ürünün kalitesini ve mukavemetini büyük ölçüde etkiler. Bu çalışmada, kompozit kılavuz elemanların sonlu elemanlar yöntemi kullanılarak malzemeden ürüne geçiş aşamalarının ve Digimat, Moldex3D ve MSC Marc p ...Daha fazlası
ÖZETDiyabet izleme, kan şekeri monitörlerinin kullanılmasını gerektirir. Biyolojik dokunun dielektrik özelliklerinde glikoza bağlı değişimi algılayarak, RF yaklaşımlarının kan şekeri ölçümlerini sağlaması umut vericidir. Bu yaklaşım non-invaziv ve sürekli kan şekeri takibi sağlayabilir. Mevcut araştırmalar, kan şekeri monitörlerini invaziv olmayan bir şekilde ölçmek için elektromanyetik dalgalar kullanan bir monitörün geliştirilmesine odaklanmaktadır. Yöntem, bir izleme cihazının rezonans frekansını, glikoz seviyesi ile ilgili olan kanın geçirgenliği ve iletkenliği ile ilişkilendirir. Değişen ...Daha fazlası
ABSTRACTCopper is one of the most conductive metallic materials. For most metals, additive manufacturing is prone to laser or electron beam powder bed fusion processes. Due to copper's high reflectivity and very high thermal conductivity, it is difficult to print 3D parts with powder bed fusion methods. Binder jetting, which is a developing 3D printing technology, has a high potential for use in order to eliminate these problems of copper and low processing costs. In this study, the effect of particle size distributionand oxygen level of the copper powders on part density, tensile strength, su ...Daha fazlası
ABSTRACTJaundice is a very common disease in infants. It is caused by an increase in the level of bilirubin in the blood. Its incidence in newborns is around 60-70. When jaundice becomes pathological, it can cause much damage to the body: brain damage, vision loss, lung and kidney dysfunction, and even death. With the increase of bilirubin and its accumulation in the organs, irreversible damage occurs. There are different methods such as exchange transfusion, medication, and phototherapy to remove bilirubin from the environment. Blue light with a wavelength of 430-490 nm is required for light ...Daha fazlası
ABSTRACTIn this study, the effect of local heating on the weld line formation in a plastic injection mold was studied by using acrylonitrile butadiene styrene (ABS) and polypropylene 20 glass fiber (PP GF20) plastic material. An aluminum 6000 insert was fitted into the injection mold to set temperatures for local heating. The three parameters with three levels were selected for injection molding process parameters as insert temperature, mold temperature, and melt temperature and to produce mechanical tests specimens with weld lines and non-weld lines. L9 orthogonal array was arranged for the T ...Daha fazlası
ABSTRACTOrganic-inorganic (hybrid) dental filling composite resins are becoming increasingly popular as a result of their aesthetic quality, good mechanical properties, optimum wear resistance, and ease of use. However, dental composites have relatively high brittleness, low strength, and durability, which limits applications. Dental filling composites containing nanoparticles have been developed in recent years to address the drawbacks of dental composites. These composites have high filling percentages and provide high strength and durability to the resin. However, the characteristics of the ...Daha fazlası
ABSTRACTIn this study, the effect of a new generation bio-polymeric admixture on the physical and mechanical properties of cement mortars is examined in detail. The bio-polymeric admixture is prepared by grinding egg shells, apricot kernel shells, hazelnut kernel shells, walnut kernel shells, and olive seeds in micronized sizes. The evaluation of the bio-polymeric admixtures, which are produced as wastes, among high production materials such as concrete and mortar derivative products, provides an opportunity for better disposal and management of these wastes.ÖZETBu çalışmada, yeni nesil biyopo ...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
ABSTRACTThe rapid development of robot technology has started to be emphasized medical robotics increasingly. The potential of robotic systems to facilitate the work of healthcare workers, minimize human errors, restore function to lost limbs, and enable operations that cannot be performed due to distance or other factors have made this field increasingly popular.Surgical robotics applications are the trend subfield of medical robotics. In these applications, it is aimed to reach the desired task with certain precision and accuracy. Therefore, performance of the control system is very crucial ...Daha fazlası
ÖZETÜriner kateterler mesanesini boşaltamayan hastalarda yaygın olarak kullanılmaktadır. Fakat, kateter yüzeyleri mikroorganizma adezyonuna uygunlardır ve bu durum, ilerleyen dönemlerde çeşitli komplikasyonlara neden olmaktadır. Komplikasyonların önlenmesine yönelik çeşitli kateter malzemeleri ve farklı yüzey modifikasyonları denenmiş, fakat bu yaklaşımların çoğu başarısız olmuş ve bazıları çeşitli yan etkiler göstermiştir. Bu nedenle, komplikasyonların önlenmesi ve tedavisi için yeni yöntemlere ihtiyaç duyulmaktadır. Antimikrobiyal peptidler geniş çaplı aktivite göstermeleri, ilaç direncine n ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.