2147-9364_2005_20_3

Author: M.Gürhan YALÇIN, Zeynep ŞAHİN Publishing Date: 2005 E-ISSN: 2147-9364 Volume 20 Issue 4 ABSTRACT: Drilling wells are classified upon the purpose, depth, location, and the matter of material to be explored. Drilling methods also vary. One of which is rotary drilling method. The aim of this study is to outline the processes during the rotary drilling utilized for the extraction […]

Author: H.ALİM BARAN, Hulisi KARGI Publishing Date: 2005 E-ISSN: 2147-9364 Volume 20 Issue 4 ABSTRACT: In this study, origin of chromite and dolerite dikes in the Andızlık-Zımparalık region was investigated by field observations, microscopic studies and chemical analyses. The ultramafic rocks in the region are tectonites and harzburgite is the dominant lithological unit. Dunite crops around out less than harzburgite. It

Author:Azize AKKOCA, Beşir ŞAHİN, Mustafa TUTAR “ Publishing Date: 2005 E-ISSN: 2147-9364 Volume 20 Issue 4 ABSTRACT: In the present study, effects of wall functions available in the Fluent software on the fluid flow and heat transfer characteristics of a plate fin and tube heat exchanger are investigated in the range of 500≤ Re ≤ 6000 for a non-dimensional fin

Author: Şeref SAĞIROĞLU, Necla ÖZKAYA Publishing Date: 2005 E-ISSN: 2147-9364 Volume 20 Issue 3 ABSTRACT: This work presents an intelligent automatic fingerprint identification and verification system based on Artificial Neural Networks (ANNs). In this work, the design processes of the system have been presented step by step. Fingerprints were first converted into digital images using a specific hardware. They were then

Author: Özcan TAN, Bayram Ali UZUNER Publishing Date: 2005 E-ISSN: 2147-9364 Volume 20 Issue 3 ABSTRACT: In this study, passive states developed by a horizontal movement of a rigid model retaining wall in sand were experimentally investigated. The amounts of the necessary lateral movements in order to create passive cases and the first phase of the failure surfaces were determined by