Effect of operational parameters and formation properties on drillability in surface set diamond core drilling

Akün, M. Ertan


Effect of human prior knowledge on game success and comparison with reinforcement learning
Hasanoğlu, Mert.; Çakır, Murat Perit; Department of Cognitive Sciences (2019)
This study aims to find out the effect of prior knowledge on the success of humans in a non-rewarding game environment, and then to compare human performance with a reinforcement learning method in an effort to observe to what extent this method can be brought closer to human behavior and performance with the data obtained. For this purpose, different versions of a simple 2D game were used, and data were collected from 32 participants. At the end of the experiment, it is concluded that prior knowledge, such...
Effect of Polymer Additives and Process Temperature on the Physical Properties of Bitumen-Based Composites
Dogan, Mehmet; Bayramlı, Erdal (2009-08-15)
Polymer modified bitumen (PMB) is a binder obtained by the incorporation of polymer into the bitumen by mechanical mixing or chemical reaction. This study deals with the modification of bitumen with three types of polymers (LDPE, EVA, and SBS) in the presence of filler (CaCO3). The morphological, mechanical, rheological properties, and thermal conductivity of the PMBs have been analyzed by scanning electron microscopy, tensile testing, melt flow index (MFI) measurements and hot wire method, respectively. Th...
Effect of drought and salt stresses on antioxidant defense system and physiology of lentil (lens culinaris m.) seedlings
Ercan, Oya; Öktem, Hüseyin Avni; Department of Biology (2008)
In this study, 14 days old lentil seedlings (Lens culinaris Medik cv. Sultan), which were subjected to 7 days of drought (20% PEG 6000), and salt (150 mM NaCl ) stress , were examined in a comparative manner for the effects of drought and salt stress treatments. In shoot and root tissues physiological parameters such as wet-dry weight, relative water content, root-shoot lengths, membrane electrolyte leakage, and lipid peroxidation in terms of malondialdehyde (MDA) were determined. H2O2 content, proline accu...
Effect of Flare Geometry on the Flow Field of Radial-Radial Swirlers
Bay, Ayse; Kiyici, Firat; Perçin, Mustafa (2022-01-01)
In this study, an experimental investigation is conducted to assess the impact of the flare geometry on the mean flow field generated by radial-radial swirlers. Two-dimensional two component PIV measurements are performed on the mid-plane of a non-reacting planar combustor test section. Three dimensional numerical simulations are conducted for selected cases to support experimental observations. In a previous study conducted in the same setup, counter-rotating radial-radial swirlers without flare extension ...
Effect of fly ash on swell pressure of an expansive soil
Çokça, Erdal (1999-12-01)
This paper discusses the effect of Fly ash on the engineering properties of expansive soils. As reviewed in literature, many previous investigations have shown promising results for improvement of expansive soil after stabilization with Fly ash. Laboratory tests have been conducted on expansive soils obtained from three different regions in Khartoum state. Various percentages of Fly ash such as 0%, 10%, 20%, 25%, and 30% by weight of soil were added to the three soils and their inf...
Citation Formats
M. E. Akün, “Effect of operational parameters and formation properties on drillability in surface set diamond core drilling,” Ph.D. - Doctoral Program, Middle East Technical University, 1997.