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Multi-seeded YBCO superconductors (cylindrical size) 32 mm in diameter were fabricated by top-seeded melt growth (TSMG). Melt-processing was performed using a precursor containing 75 wt % of Y123 and 25 wt % of Y211 with 0.5 wt % of CeO2. Trapped magnetic fi…

A novel continues plasma reactor with rotating electrodes was designed and constructed to investigate methane decomposition to hydrogen and solid carbon. This new reactor structure causes stable operation. Hydrogen is main part of gaseous products which cont…

Çarpan jetler, iyi bir ısı transferi performansı sağlamaları nedeniyle genellikle sanayide elektronik ekipmanların ısıl problemlerini çözmek için kullanılırlar. Bu çalışmada, tek bir hava jeti akışı kullanılarak bir tarafı açık, üç tarafı kapalıdikdörtgensel…

In the ceramic sanitaryware sector two different slips are used for different products. These slips are VC (vitreous china) and fine fire clay (FFC). Large-sized products must have low firing deformation, like washbasin, shower tray etc. are produced from FFC …

Many well-known material structures, such as metals, ceramics or polymers, cannot meet all the technological demands. For this reason, there is ongoing research into new materials with advanced features. A composite material is consisting of at least two phase…

Diesel engines have been preferable engines for heavy, medium and light duty vehicle applications due to their superior performance and fuel economy. However, concerns with their emissions, which are highly toxic air pollutants, put some limitations to their w…

Energy is at the forefront of the needs to maintain the continuity of life and make it easier, and the energy demand is increasingly dependent on population growth. Today, fossil energy resources are widely used to meet energy demand and renewable energy resou…

Today, rapid population growth and the development of technology have brought about the problem of waste. In order to solve this problem, it is first necessary to reduce the waste generation at the source. This can be achieved by raising awareness of the consu…

Nowadays the progress of technology; computers, the internet and smartphones have taken over our lives and made an important place in our lives. Turkstat to be made according to the Household Survey on Information Technology Usage in Turkey, 96.9% of household…

With this work, automation levels of the railway systems will be described as explained in IEC 62290 standard, and then the relationship between these defined levels of Istanbul metro lines will be tried to be explained. In railway systems, the level of automa…

Molecular interactions have been a hot topic in chemistry because of their importance in different processes from biological activities [1]. Quantum dots with strong and easily tunable luminescence and high emission quantum yields have become well-established …

Due to increase in heating rate of initial powders used for production of aluminium matrix composites in sintering furnace, both formation of undesired phases in content of the composite materials were prevented and production costs and duration were tried to …

The construction sector aims to produce efficient projects by optimizing cost, quality and time. However, this is not always very easy. Projects may not be completed on time, budget may be exceeded or products may not be produced sufficiently high quality. For…

Increasing number of motor vehicles together with economic development brings serious air pollution problems. Especially, Particle Matter emissions from Internal Combustion Engines are difficult to control and highly dangerous for human health. Both Europa and…

The major part of freight transportation in Turkey is conducted by highway, the increase in the number of trucks and other heavy vehicles, as well as legislations allowing an increase in axle load that lead to deterioration such as rutting in flexible road pav…

Bitumen polymer modification has a long history. However, most of the polymers currently used as additive in bitumen are not economically attractive. Thus, employing recycled materials in flexible highway instead of virgin ones has become a fundamental case …

Yenilikçi soğutma teknolojileri arasında yer alan ısı boruları, sahip olduğu özgün karakteristikler sebebiyle son yıllarda önemli bir araştırma alanı olarak ortaya çıkmaktadır. Isı boruları, taşınımla ısı geçişi ve sıvı-buhar faz değişimi ilkelerinden faydalan…

Recently, works on the development of equipment in the field of power electronics has been increasing day by day. Inverter design is one of the outstanding issues in the field of power electronics. One of the most important of these studies has been the multi-…

Structural health monitoring (SHM) allows damage to the structure or its components to be identified at an early stage by self-diagnosis with the aid of sensors. The usage of SHM enables safe engineering and reduces the maintenance costs of the industry. The s…

In this study, AISI 430 ferritic stainless steel sheet with 0.6 mm thickness was joined by resistance spot welding at different welding times and currents. The effects of welding parameters on the mechanical properties of welded samples are defined in terms of…