Bahkesir University

Turkey

Bahkesir University

Turkey
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Sogut Z.,KHO Teknik Bilimler Bololm Baskanligi Makina ABD | Oktay Z.,Bahkesir University | Karakoc H.,Anadolu University | Yoru Y.,Kirmizitoprak M. Kaan S. 15 1
Isi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technology | Year: 2010

Thermoeconomics is the cost analysis based on the cost and exergy calculations which are used to determine the potential of unproductiveness in all of the thermal systems. This approach is also defined as ̀exergy cost̀ and is named as ̀exergoeconomics̀. In this study, the new methodology of exergoeconomic analysis created for thermal systems has been applied on the raw material process of a cement plant which consumes high energy. In this study, two sets of analyses have been conducted by using operation data of the process weekly. the thermodynamic analyses and the exergoeconomic analyses. At the end of these analyses, the average energy and exergy efficiencies of the mill have been found 82.9% and 18.44% respectively. The unit cost of the output product named ̀farinè has been calculated and found between 0.00708-0.01078 $/kg. These costs have been compared with the farine costs of the cement plant, and the effects of exergy consumption on the cost have been evaluated. ©2010 TIBTD Printed in Turkey.


Oktener A.,Istanbul Provincial Directorate of Agriculture | Erdogan Z.,Bahkesir University | Koc H.T.,Bahkesir University
Bulletin of the European Association of Fish Pathologists | Year: 2010

In the present study, Xiphias gladius caught with harpoon in the Aegean Sea was examined for parasites between July and August, 2007. The study presents the first records of Tristoma coccineum, Tristoma integrum, adhering to internal surface of gills on swordfish from the Aegean Sea of Turkey. Additionally, Pennella instructa was also first recorded on the eye of sword fish.


Alas A.,University of Konya | Oktener A.,Deparment of Fisheries | Turker Cakir D.,Bahkesir University
Bulletin of the European Association of Fish Pathologists | Year: 2015

Parabrachiella hostilis (Heller, 1868; Copepoda: Lernaeopodidae) was reported for the first time from the gill filaments and gill rakers of the shi drum, Umbrina cirrosa (Linnaeus, 1758; Pisces: Sciaenidae) in Turkey. Also, some of morphological characters of this parasitic copepod are given using photographs and drawings.


Eocene units are widespread in the Eastern Pontides, unconformably overlying Upper Cretaceous volcanoclastic and sedimentary rocks. The Eocene units consist mainly of lava flows and lesser tuffs and sediments. In the study area, the Gümüşhane region, tuffs are interbedded with lava flows, over an area of -15 km2. Petrographically, the tuffs can be classified into vitric tuff, crystal tuff, lapilli tuff, and locally silicified tuff. The tuffs, which are cut by dolerite dykes, contain plagioclase (An 28-30), amphibole, glass shards, and minor pyroxene, K-feldspar, opaque oxides, and zircon, as well as secondary clay, sericite, calcite, chlorite, and devitrified glass. The U-Pb zircon SHRIMP age from the tuff is 45.8 ± 1.2 Ma, which is regarded as the crystallization age. U and Th concentrations within zircon grains vary from 343 to 744 ppm and from 203 to 605 ppm, respectively, and Th/U ratios range from 0.59 to 1.27, indicating precipitation from a melt. Geochemically, the tuffs have calc-alkaline volcanic-arc characteristics. The trace element compositions are indicative of subduction-zone volcanism. The tuffs have high large ion lithophile elements (LILEs) contents and low high field strength elements (HFSEs) contents compared to N-type Mid-Ocean Ridge Basalt (MORB). Chondritenormalized rare earth element (REE) patterns are concave upwards indicating significant fractional crystallization during evolution of the melt, with (La/Lu)CN = 1.28-13.35. Moderately negative (Eu/Eu*)CN ratios are in the range 0.45-1.07, reflecting plagioclase fractionation. From the trace element signature it is concluded that the parental melt was derived from an enriched upper mantle and formed in an intra-arc basin. © 2010 E. Schweizerbart'sche Verlagsbuchhandlung. Stuttagrt, Germany.


Kirat G.,Bozok University | Aydin N.,Bahkesir University
Polish Journal of Environmental Studies | Year: 2015

The study area is located northeast of Akdağmadeni town center, 12 km from the town (Fig. 1). Astragalus pycnocephalus Fischer (local name: Kevan) and Verbascum euphraticum L. (local name: mullein) plants growing in nature around the mining area were chosen to be studied. The plants and the soil in which they grew were sampled and studied. The vicinity of the Akdağmadeni Pb-Zn mining area is being polluted due to natural causes and mining activities. The surrounding areas and the plants gowing in the study area are strongly affected by the pollution. The amount of Pb changes between 29.87 and 7839.53 mg/kg, and Zn changes between 48.6≥10000 mg/kg in the soil where A. pycnocephalus grew. The concentration of Pb changes between 52.96 and 9909.13 mg/kg and the concentration of Zn changes between 115.1≥10000 mg/kg in the soil where V. Euphraticum grew. Depending on the Pb and Zn concentrations in soil, A. Pycnocephalus and V. Euphraticum are determined as indicator plants. A. pycnocephalus and V. euphraticum at some locations are determined as hyperaccumulators for Pb and Zn due to the determined concentration values (Pb:>1000 mg/kg, Zn:>10000 mg/kg), calculated enrichment coefficient, and translocation factor values (>1). © 2015, HARD Publishing Company. All rights reserved.

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