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This study was compiled from the results of various researches performed on using diethyl ether as a fuel or fuel additive in diesel engines. Three different techniques are used the reduction of the harmful exhaust emissions of diesel engines. The first techni…

In this talk, we investigate a model of the oxygen-phytoplankton-zooplankton dynamics to understand the underlying properties of the effect of environmental stochasticity both on oxygen production rate and phytoplankton growth rate. We address this issue the…

Social security system has entered into a change especially in the 1980s in many countries after economic and social problems which forced system to change. Especially financial deficits of social security institutions due to aging population emerged as a ma…

Solar energy from renewable energy sources can be used for different purposes. The most common areas of use are electricity generation and preparation of hot water. While photovoltaic (PV) modules are used for direct electricity production, commercial vacuum…

Bu çalışmada, non-lineer ve dengesiz yükün bulunduğu güç sisteminde aktif filtre kullanılarak harmonik distorsiyonun değeri düşürülmüştür. Pasif harmonik filtrelerin aksine, modern aktif harmonik filtreler, güç faktörü düzeltme, gerilim regülasyonunu saglama…

Taşıtların elektrik ihtiyacı taşıtın cinsine göre her geçen gün artarak devam etmektedir. Bu ihtiyacı karşılamak taşıtlarda bulunan geleneksel elektrik üretim ve depolama yöntemi dışında egzoz ısının geri kazanımı, güneş enerjisi uygulamaları yanı sıra süspa…

Sermaye hareketleri önündeki engellerin önemli ölçüde kalkmasıyla birlikte çok uluslu şirketler de yaygınlaşmış ve ulusal şirketlerle rekabet ederek ekonomik hayatın önemli unsurları haline gelmişlerdir. Özellikle çok uluslu şirketler, elde ettikleri kârlar …

In this work, the effects of bis (2-methoxy-4-allylphenyl) oxalate (I) on levitation (Fz) and lateral forces (Fx) of bulk MgB2 superconductor has been investigated and reported for the first time. All samples were prepared from magnesium powder (Mg, 99.8 %),…

The rapid growth of cities causes spatial and social changes and transformations. At the same time, planning theories and concepts are affected by change processes. While the search for innovative methods in urban development and applications comes to the fo…

Bu çalışmanın amacı, yazılım projelerinin geliştirilmesinde ve geliştirilen projeden en iyi verimin elde edilmesine büyük katkılar sağlayan, yazılım projesi geliştirme süreçlerindeki risk yönetiminin incelenmesidir. Ayrıca Yazılım proje geliştirme aşamaları …

Energy demand in the 21st century is increasing continually. This increase in energy demand is one of the factors affecting the increase in universal problems. Energy is produced using both renewable and non-renewable resources. Therefore, energy consumption…

Cherry trees do not reproduce from seed. Desirable cultivars are grafted onto rootstocks which is generally clonally propagated. Many cherry rootstocks have been released around the world and a wide range of cherry rootstocks is available for growers. The cu…

Here we discussed the electrical performance of Photovoltaic (PV) panels of natural dust accumulation by wind, bird droppings etc., over time which is of great importance especially for the areas where the rain density are high [1, 2]. In this study, the eff…

Evolution of EU road transport emission standards indicates that the limits have been reduced more than 90% in the last decades. However, nowadays, the urban populations in many developed countries are still suffering from urban transport sourced emissions. On…

Selection of floor insulation and flooring material is important in terms of providing electricity and safety of persons in electrical networks and electrical utility vehicle. The goal of a safe ground is to ensure the safety of people and the electrical syste…

Senior managers who want to adapt to the rapid change process that has emerged with digitalization have had to fundamentally change their way of doing business and their understanding of management or adapt it to the new process. This digital transformation pr…

The sun's rays, which are our source of life, give us pleasure to enjoy in the winter and spring, but in the summer, the steep and scorching rays disturb us all. For this reason, it is observed that on average, 52% of the cooling load needed in the calculation…

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…

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…

Fins are basic structures which can be easily added to many engineering designs to improve heat transfer from hot surfaces. The addition of a fin to a particular heated surface can significantly increase the cooling at no extra cost. In some cases, standard fi…