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Filtreler
Bulunan: 119 Adet 0.001 sn
Yayıncı : Graduate School of N ... ✕Koleksiyon : FEN BİLİMLERİ ENSTİT ... ✕Tam Metin : var ✕
Koleksiyon [2]
Ambargo Durumu [1]
Tam Metin [1]
Eser Sahibi [20]
Tür [2]
Yayın Tarihi [7]
Yayıncı [1]
Kayıt Giriş Tarihi [11]
Tez Danışmanı [20]
Yayın Dili [2]
Konu Başlıkları [20]
Erişime Açık

A comparison of the performances of conventional and low salinity water alternating gas injection for displacement of oil Petrolün geleneksel su gaz değişimli ötelenmesi ile az tuzlu su gaz değişimli ötelenmesi yöntemlerinin başarımlarının karşılaştırılması

Bucyanayandi, Emmanuel

ABSTRACTThe oil and natural gas reside in microscopic pores of subsurface rock layers called a reservoir rock. Besides there always at least two phases exist in oil and gas reservoirs. Therefore, the flow and displacement of oil into the production wells are influenced significantly by capillary forces. Due to the capillary and surface forces, the recovery of oil always remains at low percentages usually between 20 to 40. In order to increase the recovery factor several secondary and enhanced oil recovery techniques have been developed and implemented. The two secondary recovery methods namely ...Daha fazlası

Yüksek Lisans 2022 İbrahim Kocabaş Graduate School of Natural and Applied Sciences 8 Görüntülenme
Erişime Açık

Optimizing the load carrying performance of the hydraulic guiding elements with finite elements method

Tanyeri, Cem

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

Yüksek Lisans 2022 Özgür Seydibeyoğlu Graduate School of Natural and Applied Sciences 11 Görüntülenme
Erişime Açık

Fabrication of hysteresis-free perovskite solar cells by SAM modified electrode SAM modifiyeli ITO elektrot ile histeresis östermeyen perovskit güneş hücresi üretimi

Yalçın, Eyyup

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

Doktora Tezi 2022 Şerafettin Demiç Graduate School of Natural and Applied Sciences 21 Görüntülenme
Erişime Açık

Investigation of gold nanoparticle doping onthe sensing properties of polypyrole based conducting polymer

Abdullah Bayram

Besides human health, toxic gases are harmful for both animal and plant health. Various concentrations cause so many fatal or permanent problems. Therefore, controlling toxic gases (carbon monoxide, carbon dioxide, ammonia), and oxygen at the indoor environment is of vital importance. In this study, effect of gold nanoparticle doping on the gas sensing properties of pyrrole-based conductive polymers were investigated via acoustic wave and electrical based techniques. In this study, quartz crystal microbalance technique was used. Quartz Crystal Microbalance is a powerful technique for nano scal ...Daha fazlası

Yüksek Lisans 2014 Salih OKUR Graduate School of Natural and Applied Sciences 10 Görüntülenme
Erişime Açık

Tabakalı kompozitlerin burkulma karşıtı davranışlarının differential evoluation ve simulated annealing metodları ile optimum tasarımı

Akçair, Mehmet

xi, 51 sayfa : table, figure 29 cm. 1 CD

Yüksek Lisans 2017 Levent Aydın Graduate School of Natural and Applied Sciences 15 Görüntülenme
Erişime Açık

The effect of fibrous dental barrier membrane on osteogenic differentiation of human mesenchymal stem cells Fibröz yapılı dental bariyer membranın insan mezenkimal kök hücrelerinin osteojenik farklılaşması üzerine etkisi

Utar, Bahar

ABSTRACTBone healing is one of the important issues in clinical areas such as oral, maxillofacial, orthopedic, and plastic surgery. Especially in the implantation process to be performed in dental applications, the structure of the jawbone and the quality of the bone density are very important for the performance of the process. In the area of tissue engineering, there are biodegradable bone implants with biocompatible synthetic polymers that give successful results in many areas. The dental barrier membrane is a synthetic bone graft based on Poly (DL-lactide). It is used in many dental applic ...Daha fazlası

Yüksek Lisans 2022 Ozan Karaman Graduate School of Natural and Applied Sciences 8 Görüntülenme
Erişime Açık

Investigation of the adhesive-bonded aluminum-polyamide hybrid joints Yapıştırıcı ile birleştirilmiş alüminyum-poliamid hibrit bağlantıların incelenmesi

Batıkan Kandemir, Miray

ABSTRACTToday, environmentally friendly, high-strength and lightweight engineering materials are becoming increasingly important for the automotive and aviation industries. For this purpose, it is critical to combine different materials correctly and to create a reliable hybrid structure. Adhesives have a huge market share among the joining methods due to their low-stress concentration, high formulation possibility, good fatigue resistance, and sealing advantages. However, surface properties and surface treatments play an active role in determining joint performance. In this thesis, the effect ...Daha fazlası

Yüksek Lisans 2022 Özgür Seydibeyoğlu Graduate School of Natural and Applied Sciences 29 Görüntülenme
Erişime Açık

Control of robotic systems used for support in cochlear microrobot operations Koklear mikrorobot operasyonlarında destek için kullanılan robotik sistemlerin kontrolü

Karayaman, Goncagül

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

Yüksek Lisans 2022 Barış Bıdıklı Graduate School of Natural and Applied Sciences 7 Görüntülenme
Erişime Açık

The design, manufacturing and applications of a novel led-based phototherapy device Yeni Bir LED tabanlı fototerapi cihazının tasarımı, üretimi ve uygulamaları

Yaşar, Büşra

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

Yüksek Lisans 2022 Nermin Topaloğlu Avşar Graduate School of Natural and Applied Sciences 10 Görüntülenme
Erişime Açık

Oxygen level and particle size effects on sintering of binder jetting copper parts Bağlayıcı püskürtmeli eklemeli imalat yönteminde bakır parçaların sinterlenmesinde tane boyutunun ve oksijen seviyesinin etkisi

Özateş, Cem

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

Yüksek Lisans 2022 Onur Ertuğrul Graduate School of Natural and Applied Sciences 14 Görüntülenme
Erişime Açık

Design and implementation of chaotic delta robot mixer system for preparing graphene nanocomposite coating Grafen nanokompozit kaplama hazırlanması için kaotik sistem tabanlı gürbüz delta robot sıvı karıştırıcı tasarımı ve gerçeklemesi

Kavur, Ali Emre

ABSTRACTThis thesis includes design, implementation and polymer nanocomposite mixing application of chaotic system based robust delta robot. Blending fluids is a vital process while preparing coating materials. The most commonly used the coating materials are polymeric materials which need to be blended in non-Newtonian fluids. This process is very critical and harder to achieve a perfectly prepared coating material.To achieve superior blending performance, two different and independent chaotic systems were used to chaotify delta robot-based blender system. One of them was used for chaotificat ...Daha fazlası

Yüksek Lisans 2018 Savaş Şahin Graduate School of Natural and Applied Sciences 18 Görüntülenme
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