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Bulunan: 2.870 Adet 0.006 sn
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Erişime Açık

Metaheuristics-based Pre-Design Guide for Cantilever Retaining Walls

URAY, Esra | TAN, Özcan | ÇARBAŞ, Serdar | ERKAN, İ.Hakkı

A pre-design guide for cantilever retaining walls and a detail parametric study of such walls is presented here. Mathematical models based on statistical methods were improved for calculating safety factors of sliding, overturning, and slope stability of those walls. The harmony search algorithm (HSA)-a metaheuristic method-was employed to realize reasonable results of the pre-design guide from all distinct cases. Through the design algorithm, the optimal design was determined for varied soil types differently from suggestions of design codes. Thus, an optimal pre-design guide for safe and eco ...Daha fazlası

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Determining Of Safety Factors For Cantilever Retaining Wall With Mathematical Model

URAY, Esra | ÇARBAŞ, Serdar | TAN, Özcan

In the conventional design of cantilever retaining wall, trial-and-error method has been used to determine wall dimensions which satisfies the stability conditions of wall. This method takes time in design period and is not possible to know which parameter is the most effective in the design. In this study, safety factors of the cantilever retaining wall which play a crucial role in stability of the wall have been investigated to determine with mathematical model. In computing of safety factors of sliding, overturning and slope stability mathematically, Taguchi method which is a statistical me ...Daha fazlası

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Investigation of Sizing Criteria for Cantilever Retaining Wall with Taguchi Optimization

TAN, Özcan | ERKAN, İbrahim Hakkı | URAY, Esra

Controllable or uncontrollable parameters like elevation difference between soil levels, soil properties, selected wall dimensions, case of groundwater, construction area, intended use and cost have been affected design of retaining walls that connects two different soil levels. In this study, factors effect on the design of the cantilever retaining walls which have an important place in geotechnical engineering applications have been investigated experimentally. For different wall height and soil properties Signal/Noise (S/N) and variance analysis have been performed separately by using L16 d ...Daha fazlası

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Cerrahi Girişim Geçiren Hastaların Sağlık Okuryazarlığı Ve Öğrenme Gereksinimleri Arasındaki İlişki

SAYAR, Serap | ÖZCAN, Sıla Türkan | GÜNDOĞDU, Fatma

Giriş ve Amaç: Cerrahi girişim sonrasında hastaların bireysel olarak öğrenim gereksinimlerinin belirlenmesi, verilecek eğitimlerin hastanın gereksinimlerine ve bilgi almaya hazır oluşluk durumlarının değerlendirilerek düzenlenmesi gerekmektedir. Bu araştırmanın amacı, cerrahi girişim geçiren hastaların sağlık okuryazarlık düzeyi ve öğrenme gereksinimleri arasındaki ilişkiyi belirlemektir. Gereç ve Yöntem: Araştırma tanımlayıcı ve ilişki arayıcı olarak yürütüldü. Araştırmanın yapılabilmesi için etik kurul ve kurum izni alındı. Araştırmanın örneklemini, 15 Ağustos-20 Kasım 2021 tarihlerinde, örn ...Daha fazlası

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An Example of Cement Stabilization Application in Railway Systems (Aladdin-Adliye Tramway)

URAY, Esra | ERKAN, İbrahimHakkı | ÖZÇELİK, Mustafa | TAN, Özcan

The subbase and base layers of the road and railway should be designed to be the most economical and should provide criteria such as bearing capacity, settlement and permeability during service life. Today, cement stabilization is widely used in improving the soil properties when the criteria are not met. In this study, the quality control tests of stabilized filling and cement stabilization applied in the construction area of Konya Aladdin-Adliye tramway line and application details of cement stabilization along the route have been given. At the quality control experiments of stabilized mater ...Daha fazlası

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The protective and anti-inflammatory effect of methylene blue in corrosive esophageal burns: An experimental study

TANRIKULU, Ceren Şen | TANRIKULU, Yusuf | KILINÇ, Fahriye | BAHADIR, Burak | CAN, Murat | KÖKTÜRK, Fürüzan | KEFELİ, Ayşe

BACKGROUND: In developing countries, esophageal burns are quite common. They are caused by the ingestion of corrosive substances that may lead to esophageal perforation in the short-term and stricture formation in the long-term. Prevention of stricture progression in the esophagus is the main aim of the treatment for corrosive esophageal burns. We aimed to investigate the protective and anti-inflammatory effects of methylene blue (MB) treatment on corrosive esophageal burns. METHODS: Twenty-eight rats were used in the study and randomly divided into four equal groups; group 1 (Sham), group 2 ( ...Daha fazlası

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Gelişmekte Olan Ülkelerde Cari Açık Büyüme ve Yatırım Malı İthalatı Üçgeni Türkiye Örneği Üzerinden Bir Uygulama: Türkiye Örneği Üzerine Bir Uygulama (2001-2012)

AFŞAR, Bilge | KALAYCI, İrfan | GÜNDÜZ, Mehmet Akif

Cari açık sorunu dünyada ve Türkiye’de son yıllarda sıkça tartışılır hale gelmiştir. Tartışma; cari açığın nedenleri ve finansmanı üzerine yoğunlaşmaktadır. Pek çok gelişmiş ülke (GÜ) ve gelişmekte olan ülke (GOÜ) gibi Türkiye de, bir ölçüde yüksek yatırım malı ithalatına bağlı olarak –genellikle- kaydettiği pozitif ekonomik büyümeye paralel olarak cari açık vermektedir. Çalışmamızda cari açık sorunu ile yatırım malı ithalatı ve büyüme arasındaki ilişkinin deneysel boyutu incelenmiştir. Bu konuda literatürde savunulan görüşlerden birisi olan, “cari açığın büyümenin yarattığı talep artışından k ...Daha fazlası

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Could interleukin-33 and its suppressor of tumorigenicity 2 (ST2) receptor have a role in cervical human papillomavirus (HPV) infections?

KULHAN, Nur Gözde | KULHAN, Mehmet | AYDIN, Merve | NAYKİ, Ümit | NAYKİ, Cenk | ULUĞ, Paşa | ATA, Nahit | MERTOĞLU, Cuma | ÇIKMAN, Aytekin | SAYAR, İlyas | TÜRKLER, Can

Why most women can clear human papillomavirus (HPV) infections while others can develop permanent infections. The stimulation of immunotolerance of the immune system of the host by the persistent HPV infection may be the answer to this question. Interleukin-33 (IL-33) may play a role in the pathogenesis of HPV infection, this hypothesis was thought to be due to the rapid release of IL-33 from damaged cells following tissue damage, necrosis, and activation of the inflammasome. Thus, in this study, the role of IL33/suppressor of tumorigenicity 2 (ST2) was emphasized in HPV positive and HPV negat ...Daha fazlası

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Op-90 Efficiency Of Power Plants With Carbon Capture And Storage

UYANIK, Sırrı | SUCU, Yavuz | ALTÜRK, Orhan

The impact of human activities on climate change has been growing by time. One of these activities that causes global warming is continuously increasing consumption of fossil fuels. It is certain that high energy demand has some negative effects. However ensuring the developments on carbon capture and storage (CCS) technologies in parallel with increase in the energy demand is critical for both sustainable environment and energy supply security. There have been valuable technological researches on CCS aiming to struggle the climate change problem. CCS is a range of technologies that hold the p ...Daha fazlası

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Eastern Carpets in David Chalmers Alesworth’s Art

KAKAN, Ekin

In today's art, every kind of material can be transformed into a works of art. In some works, it is seen that the expression forms of traditional and contemporary art are melted in the same pot. David Chalmers Alesworth draws attention as an artist who deals with traditional carpet art in a contemporary style. From the year 2010, we see that David Chalmers has made "textile interventions" on his eastern carpets in his works. The artist, who usually manipulates the city plans, maps and various symbols of carpets he bought from Persia and Pakistan and examines the cultural degenerations in the s ...Daha fazlası

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The Role of Gender Factor in Career Advancement of Academics

USTABAŞI GÜNDÜZ, Dilara

This study is aimed to determine academic s’ negative and positive perceptions of gender factor in career advancement, to identify the problems encountered and to propose solutions to these problems. Basically the situations related to the effect of gender factor in career advancement of female and male academics working at the universities in Konya, Turkey are investigated. Critical success factors, barriers to career advancement have been identified from the standpoint of female and male academics. Moreover, the satisfaction levels and female and male academic s’ perceptions of gender-based ...Daha fazlası

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Grain Refinement, Modification, Degassing and Melt Quality Relationship in Al-7Si-0.3Mg

ÇETİN, Remzi | ULUDAĞ, Muhammet | DIŞPINAR, Derya

In this work, Al-7Si-0.3Mg alloy was studied. The alloy conditions was selected to be as-received, AlB3 grain refined and Sr modified. For each parameter, castings were made before and after degassing. In order to quantify the melt quality, reduced pressure test was used and bifilm index measurements were made. All the cast parts were subjected to metallographical examination, and thus, porosity measurements, distribution, area fraction were compared for each of the casting conditions.

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