ÖZETHer geçen gün artan hava kirliliği ile önem kazanan karbondioksit emisyonunun azaltılmasına yönelik çalışmalar her alanda devam etmektedir. Elektrik üretimi, taşımacılık gibi hava kirliliğinin büyük kısmını oluşturan alanlarda gaz türbini kullanımı yaygındır. Gelişime açık bu motorlar ile verimi arttırmak ve yakıt tasarrufu sağlamak amacıyla çalışılan yöntemlerden biri olan reküperatör tasarımı bu tezin konusudur. Yer ve hava olmak üzere iki farklı mikro gas türbin motoru için borulu ısı değiştirici basınç kaybı ve sıcaklık artışı dikkate alınarak modellenmiştir. Hava tipi motorlarda alan ...Daha fazlası
ÖZETDestinasyonlar artan rekabet koşulları içinde üstünlüğü sağlamak için markalaşma yoluna gitmektedirler. Bu süreçte en sık ihtiyaç duyulan şey, markalaşma sürecine giren destinasyonun ön plana çıkartacağı yerel, kültürel ve turistik değerlerdir. Türkiye'de geleneksel özellikler taşıyan ve yerel ve kültürel birtakım değerleri yaşatmak ve tanıtmak için farklı temalarda birçok festival düzenlenmektedir. Bu festivaller içinde önemli bir yere sahip olan yerel yiyecek festivalleri, destinasyona ekonomik katkı sağlamaktadır. Yerel yiyecek festivalleri, ürünlerin hasat edilmesi, pişirilmesi ve hazı ...Daha fazlası
Objective: During the COVID-19 pandemic, elderly adults’ nutritional habits, physical activity levels and the levels of malnutrition were affected. This study investigated the prevalence of malnutrition and physical fitness and exercise activity levels in home dwelling elderly during the COVID-19 pandemic. Material and Method: This cross-sectional study was conducted with a face-to-face questionnaire on 670 (male: 241, female: 429) home-dwelling older adults with a mean age of 70.66±5.83 years. The nutritional screening and evaluation were performed using Mini Nutritional Assessment (MNA), and ...Daha fazlası
Enhanced recovery after surgery (ERAS) protocol aims to accelerate early recovery and improves postoperative patient outcomes. This protocol, which includes components such as reduction and prevention of postoperative complications, early mobilization, multimodal management of nausea and vomiting, positively affects surgical processes when used in patients undergoing gynaecological surgery. The aim of the present study was to use recent and relevant literature for examining the use of ERAS protocols in patients undergoing gynaecological surgery. Therefore, a systematic review was conducted to ...Daha fazlası
Endoscopic bariatric procedures in the treatment of obesity have become widespread in recent years. In this systematic review, it was aimed to assess the role of intragastric balloons and transpyloric shuttle in the treatment of obesity. A comprehensive search was conducted using the search terms “Intragastric Balloon” and “TransPyloric Shuttle” in PubMed, Cochrane Library and Web of Science databases from 1st of December to 25th of December in 2020. Twenty-seven clinical studies (24 studies on intragastric balloons and 3 studies on transpyloric shuttle) were assessed. It is clear that both me ...Daha fazlası
Age-related macular degeneraton is an eye disease that is one of the biggest causes of blindness worldwide. Age-related macular degeneration is a complex and multifactorial disease. Although there are many risk factors both environmental and genetic such as ethnicity, age, genetics, family history, and oxidativestress, the most effective and modifiable risk factor in preventing age-related macular degeneration is smoking. In addition, the fact that nutrition is a potentially modifiable risk factor suggeststhat it may reduce the risk of age-related macular degeneration. In many epidemiological ...Daha fazlası
ABSTRACT
Glucose-6-phosphate dehydrogenase (G6PD) is an enzyme in the pentose phosphate pathway involved in the production of the reduced form of nicotinamide adenine dinucleotide phosphate (NADPH). One of the most common inherited enzyme abnormalities is G6PD deficiency. G6PD enzyme deficiency facilitates human coronavirus infection due to glutathione (GSH) depletion. Depletion of glutathione due to blockage of the pentose phosphate pathway can hardly preserve the oxidative and anti-oxidative balance. GSH protects the body from the harmful effects of oxidative damage from excess reactive oxy ...Daha fazlası
ABSTRACTEmployees in accommodation establishments are an important production factor and they affect establishment performance and competitive power of the establishment. Because of this reason, efforts should be made in order to attract qualified employees to the organization and to ensure their organizational commitment. One of the important factors for ensuring organizational commitment is the ethical leaders who create environments that support, motivate, encourage and develop their subordinates in organizations with their reliable, honest, fair and principled behaviours. Another factor th ...Daha fazlası
ABSTRACTClay colloids and suspensions are distinguished from other colloidal minerals by wide ranges of application area. Clay-based colloidal systems are frequently used in various industries, including cosmetics, oil industry, medicine, pharmacy, catalysis, textiles, remediation, and food packaging. Mechanical and thermo-structural properties of these systems provide valuable information in terms of some important criteria such as shelf life, gelation process, and degradation time. The foucus point of this study is to consider the application of water-clay suspensions in drilling fluid more ...Daha fazlası
ABSTRACTBiogas technology offers both an environmentally sustainable solution for livestock manure and generates renewable energy. Renewable energy production from livestock manure highly depends on the feedstock availability
therefore, the spatial and temporal variability of livestock manure is critical for sustainable management of livestock manure via biogas plants. In this regard, this study aims to develop a replicable geographic information system-based spatiotemporal method to determineemerging hot spots and power capacities for new biogas plants and capacity expansion for the existing ...Daha fazlası
ÖZETYassı kirişli çerçeveler, kiriş kesitlerinin sığ ve geniş olduğu bir betonarme çerçeve tipidir. Genel olarak, bu kirişlerin derinliği döşemelerin derinliği ile aynıdır ve tavanda görünmemektedir, böylece daha estetik bir görünüm sağlamaktadır. Ancak, kiriş kesitleri narin ve esnek olduğundan, yassı kirişlerle inşa edilen betonarme yapıların, orta ila yüksek sismik sarsıntılara karşı dayanıma sahip olmadığını düşünülmektedir. Bu tip çerçevelerin genellikle sünek davranışa sahip olmadığını kabul edilir. Bu tezde 30 çerçeve modelinin analitik bir incelemesi sunulmaktadır. Farklı geometrik kon ...Daha fazlası
ABSTRACTThis thesis presents diagnose and detect faults of Tennessee Eastman Process (TEP) with machine learning algorithms via Poincaré plots-based feature extraction and statistically analysis-based feature selection. The IEEEDataPort online dataset, obtained from a big plant that contains nonlinear processes from various chemical units, is utilized in this thesis. It contains measures from 52 process points in TEP with 20 dissimilar malfunction types. In this study, raw dataset and dataset that applied feature extraction and feature selection was used. Poincaré plot was applied to the datas ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.