Yazar "RTEÜ, Teknik Bilimler Meslek Yüksekokulu, Motorlu Araçlar ve Ulaştırma Teknolojileri Bölümü" için Scopus İndeksli Yayınlar Koleksiyonu listeleme
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Friction stir welding of low-carbon shipbuilding steel plates: Microstructure, mechanical properties, and corrosion behavior
Sekban, Dursun Murat; Aktarer, Semih Mahmut; Pürçek, Gencağa (Springer, 2019)In this study, low-carbon steel plates (ASTM 131A) used generally in shipbuilding applications were joined by friction stir welding (FSW) using optimum processing parameters. the microstructure, mechanical properties, ... -
Gel-form bait made from fish waste: Can be a potential alternative to commercial bait for handline fishing?
Eryaşar, Ahmet Raif; Koral, Serkan (Springer, 2023)The fillet wastes of Rainbow trout (Oncorhynchus mykiss), one of the most important species for mariculture in Türkiye, are only given to fish meal oil factories during the anchovy season. The rest of the time, they are ... -
Gobiid fishes of the coastal zone of the Northeastern Aegean Sea
Engin, Semih; Irmak, Erhan; Seyhan, Dilruba; Akdemir, Tolga; Keskin, Arif Can (Springer Heidelberg, 2018)In this study gobiid fish species were investigated at 31 stations from the northeastern Aegean Sea. Different habitat types between 0 and 50 m depth were studied by scuba diving with newly modified underwater visual census ... -
Grid-net design that successfully reduces discarded catch and damage to benthic species in the veined rapa whelk beam trawl fishery
Eryaşar, Ahmet Raif (Taylor & Francis Ltd., 2022)In this study, a grid-net design (GND) with three different bar spacings was compared with the commercial beam trawl used in the veined rapa whelk fishery to minimize the discarded catch amount and the loss of commercial ... -
Hallmarking microplastics of sediments and Chamelea gallina inhabiting Southwestern Black Sea: A hypothetical look at consumption risks
Gedik, Kenan; Gözler, Ahmet Mutlu (Pergamon-Elsevier Science Ltd., 2021)The consumer preference of bivalves originating from fishery or aquaculture has gained momentum in response to higher nutrition, quality, and market availability. However, potential toxicity caused by plastics, the pollution ... -
Health risk perspectives of metal(loid) exposure via consumption of striped venus clam (Chamelea gallina Linnaeus, 1758)
Gedik, Kenan; Öztürk, Rafet Çağrı (Taylor & Francis Inc, 2019)The metal(loid)s are mainly transported to the Black Sea via rivers and affect the coastal area where fisheries are intensive. Chamelea gallina (striped venus clam) is the most abundant mollusk species in the Black Sea and ... -
The impact of the marine sewage outfalls on the sediment quality: The Black Sea and the Marmara case
Akdemir, Tolga; Dalgıç, Göktuğ (Elsevier B.V., 2021)Marine sewage outfalls are the cheapest method of disposal for municipalities with restricted funds, despite their negative effects on marine ecosystems. This study was conducted on the marine sewage outfalls of the Turkish ... -
Impact toughness of friction stir processed low carbon steel used in shipbuilding
Sekban, Dursun Murat; Aktarer, Semih Mahmut; Xue, Peng; Ma, Zong Yi; Pürçek, Gencağa (Elsevier Science Sa, 2016)Effect of single-pass friction stir processing (FSP) on the impact toughness of a low carbon steel mainly used in shipbuilding was investigated via Charpy impact test at different temperatures, and the results were correlated ... -
The importance of alien species to the food web and bottom trawl fisheries of the Northeastern Mediterranean, a modelling approach
Saygu, İsmet; Heymans, Johanna J.; Fox, Clive J.; Özbilgin, Hüseyin; Eryaşar, Ahmet Raif; Gökçe, Gökhan (Elsevier, 2020)Alien species and bottom trawl fisheries are of significant concern in the Eastern Mediterranean as both can put pressure on coastal systems whilst some alien species also constitute an important component of the trawl ... -
Improvement the wear behavior of low carbon steels by friction stir processing
Sekban, D.M.; Aktarer, Semih Mahmut; Yanar, H.; Alsaran, A.; Purcek, G. (Institute of Physics Publishing, 2017)A low carbon structural steel was surface-hardened by friction stir processing (FSP) through 4 mm thickness from the surface. The hardness of the alloy increased from 140 Hv0.1 to about 240 Hv0.1 after single-pass FSP. ... -
The influence of twine tenacity, thickness and bending stiffness on codend selectivity
O'Neill, Finbarr G.; Kynoch, Robert J.; Blackadder, Lynda; Fryer, Robert John; Eryaşar, Ahmet Raif; Notti, Emilio; Sala, Antonello (Elsevier, 2016)We report on trials which measured the selectivity of haddock (Melanogrammus aeglefinus) and plaice (Pleuronectes platessa) in codends made from netting materials classified by the manufacturers as low, medium and high ... -
Ingestion of microplastics by commercial fish species from the southern Black Sea coast
Eryaşar, Ahmet Raif; Gedik, Kenan; Mutlu, Tanju (Elsevier, 2022)Microplastic (MP) contamination is a serious threat to today's marine life. Therefore, this study investigates MP ingestion in three commercial fish species (European anchovy Engraulis encrasicolus, whiting Merlangius ... -
Investigation of mechanical and microstructural properties of friction stir welded dual phase (DP) steel
Küçükömeroğlu, Tevfik; Aktarer, Semih Mahmut; Çam, Gürel (Iop Publishing Ltd, 2019)The application of dual phase (DP) steels has been increasing significantly in the automotive industry because of their high strength as well as good ductility, thus, cold formability. These steels are generally joined ... -
Investigation of microstructure and mechanical properties of friction stir welded dissimilar St37/St52 joints
İpekoğlu, Güven; Küçükömeroğlu, Tevfik; Aktarer, Semih Mahmut; Sekban, Dursun Murat; Çam, Gürel (Iop Publishing Ltd, 2019)Although friction stir welding (FSW) has widely been applied to aluminum alloys in several industries over the past three decades, it is not yet used in industry for joining of steels. the aim of this study is to characterize ... -
Long-term investigation of microplastic abundance in Squalius species in Turkish inland waters
Gedik, Kenan; Mutlu, Tanju; Eryaşar, Ahmet Raif; Bayçelebi, Esra; Turan, Davut (Elsevier, 2024)Examining the enduring alterations in microplastic (MP) concentrations within fish in inland waters is of utmost importance in understanding the historical trajectory of plastic waste and formulating consequential predictions ... -
Mechanical properties of friction stir welded St 37 and St 44 steel joints
Küçükömeroğlu, Tevfik; Aktarer, Semih Mahmut; İpekoğlu, Güven; Cam, Gürel (Carl Hanser Verlag, 2018)In this study, the weldability of lower strength St 37 grade steel plate with a higher strength steel plate (i. e., St 44) using the friction stir welding technique has been studied. St 37 grade steel sheets are widely ... -
Microplastic contamination and characteristics spatially vary in the southern Black Sea beach sediment and sea surface water
Terzi, Yahya; Gedik, Kenan; Eryaşar, Ahmet Raif; Öztürk, Rafet Çağrı; Şahin, Ahmet; Yılmaz, Fatih (Elsevier, 2022)In this study, the abundance, and characteristics of the microplastics on the southern coast of the Black Sea were assessed. More than 70% of the detected microplastics were smaller than 2.5 mm and mostly consisted of ... -
Microplastic emission trends in Turkish primary and secondary municipal wastewater treatment plant effluents discharged into the Sea of Marmara and Black Sea
Akdemir, Tolga; Gedik, Kenan (Elsevier, 2023)Wastewater Treatment Plants (WWTPs) are recognized as one of the primary sources of microplastics, a class of contaminants that has lately gained attention. The quantity of MP that WWTPs release into the environment depends ... -
The microplastic pattern in Turkish lakes: sediment and bivalve samples from Cildir Lake, Almus Dam Lake, and Kartalkaya Dam Lake
Gedik, Kenan; Atasaral, Şebnem (TUBİTAK Scientific & Technical Research Council Turkey, 2022)Plastic has become one of the most prominent contaminants in recent decades, posing a major environmental threat with critical implications for seafood safety. Thus, we investigated the abundance and characterization of ... -
The microplastic pattern of wild-caught Mediterranean mussels from the Marmara Sea
Gedik, Kenan; Eryaşar, Ahmet Raif; Gözler, Mutlu (Elsevier, 2022)The Sea of Marmara suffers from pollutants that come from municipal/industrial discharges and the Black Sea. Microplastic (MP)s, a rising environmental concern with consequences for seafood safety, are one of these ...