• Assessment of the Levels of Potentially Toxic Elements Contained in Natural Bentonites Collected from Quarries in Turkey 

  Altıkulaç, Aydan; Turhan, Şeref (American Chemical Society, 2023)

  Potentially toxic elements (PTEs) are an important type of pollutant, causing constant and far-reaching concerns around the world due to their increase in the mining process. Bentonite formed by the alteration of glass-rich ...

• Investigation of Radiological and Chemical Contents of Bauxite Ore Extracted in Turkey 

  Altıkulaç, Aydan (PMC, 2022)

  In this study, which consists of two parts, the radiological and chemical content of bauxite ore was investigated. Gamma-ray spectrometry was used in the first part of the study to determine the activity concentrations of ...

• Natural Radionuclides in Bottled Mineral Waters Consumed in Turkey and Their Contribution to Radiation Dose 

  Altıkulaç, Aydan; Kurnaz, Aslı; Turhan, Şeref; Kutucu, Metehan (ACS, 2022)

  Bottled natural mineral water (BMW) consumption in Turkey is increasing every year. Depending on the local geology from which the water is extracted, BMW could be enhanced with natural radionuclides. In this study, the ...

• Evaluation of terrestrial radionuclide levels and concomitant radiological risks of bentonites used in many industries 

  Altıkulaç, Aydan; Kurnaz, Aslı; Turhan, Şeref; Metin, Onur; Duran, Celalettin (TAYLOR & FRANCIS LTD, 2022)

  Bentonite is a soft, porous, easily shaped, and absorbent material rich in aluminum, sodium, and potassium. Bentonite is a mineral widely utilized as drilling mud, ore pelletizing, absorbent/adsorbent, bleaching agent, ...

• Determination of concentrations of non-volatile elements in fly ash released from coal combustion using EDXRF 

  Altıkulaç, Aydan; Turhan, Ş.; Kurnaz, Aslı; Hançerlioğulları, Aybaba (TAYLOR & FRANCIS LTD, 2022)

  In this study, the concentration of thirteen non-volatile elements in coal fly ash samples obtained from the Kangal coal-fired thermal power plant located in Sivas province of Turkey was determined using an energy dispersive ...

• Assessment of the Enrichment of Heavy Metals in Coal and Its Combustion Residues 

  Altıkulaç, Aydan; Turhan, Şeref; Kurnaz, Aslı; Gören, Elif; Duran, Celalettin; Hançerlioğulları, Aybaba; Uğur, Fatma Aysun (AMER CHEMICAL SOC, 2022)

  Coal-fired thermal power plants remain one of the main sources of electricity generation in Turkey. Combustion of coal creates coal ash and slag, which are often stored in landfills located near residential and agricultural ...

• THE OPTIMIZATION OF DRILLER PARAMETERS FOR ORTHOPEDIC SURGERY APPLICATIONS USING MULTIOBJECTIVE GRAY RELATIONAL ANALYSIS AND RESPONSE SURFACE METHOD 

  Gök, Arif; Gök, Kadir; Alkan, Mehmet Ali (WORLD SCIENTIFIC PUBL CO PTE LTD, 2022)

  In bone-drilling operations, undesirable temperature rises are experienced due to high-contact friction. These increases in temperature can damage bone and soft tissues from time to time. When the temperature exceeds 47 ...

• GAMMA RAY RADIATION RESEARCH IN BUILDING MATERIALS 

  Altıkulaç, Aydan (PARLAR SCIENTIFIC PUBLICATIONS, 2021)

  Building materials used in the construction industry, such as marble, granite, ceramics, travertine, and cimstone, are of crustal origin and contain natural radiation. While these materials act as a source of natural ...

• ANALYSIS OF NATURAL RADIOACTIVITY AND DETERMINATION OF POTASSIUM CONTENT IN FOODS 

  Altıkulaç, Aydan (PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2021)

  Natural radionuclides, such as potassium-40 (K-40), radium-226 (Ra-226), and thorium-232 (Th-232) originating from the earth's crust can enter the human body through foods grown in the soil, which can cause internal ...

• Impact of toxic metal pollution on surface water pollution: a case study of Tohma stream in Sivas, Turkey 

  Turhan, Şeref; Duran, Celalettin; Kurnaz, Asley; Hançerlioğulları, Aybaba; Metin, Onur; Altıkulaç, Aydan (Taylor and Francis Ltd., 2021)

  This study was executed to investigate the acidification and heavy metal (Cr, Mn, Fe, Ni, Cu, Zn, and Pb) pollution of Tohma stream flowing near Kangal lignite-fired thermal power plant located in Kangal district of Sivas ...

• Türkiye’deki Feldspat Rezervlerinde Radyoaktivite Düzeyleri 

  Altıkulaç, Aydan (2019)

  Yer kabuğunun %60’ını oluşturan feldspat, en önemli mineral gruplarındandır. Magmanın farklı kısımlarında değişik şekillerde bulunan bu minerallerin soğuyup kristalleşmesiyle feldspat zonları ve yatakları oluşmuştur. ...

• Lightlike hypersurfaces in semi-Riemannian manifold with semi-symmetric non-metric connection 

  Yaşar, Erol; Çöken, A. Ceylan; Yücesan, Ahmet (Matematisk Inst, 2008)

  In this paper, We Study lightlike hypersurfaces of a semi-Riemannian manifold admitting a semisymmetric non-metric connection. We give the equations of Gauss and Codazzi. Then, we obtain conditions under which the Ricci ...

• Thermo-economic analysis of pipe insulation for district heating piping systems 

  Keçebaş, Ali; Alkan, Mehmet Ali; Bayhan, Mustafa (Pergamon-Elsevier Science Ltd, 2011)

  In this study, the optimum insulation thickness of pipes used in district heating pipeline networks, energy savings over a lifetime of 10 years, and payback periods are calculated for the five different pipe sizes and four ...

• Radionuclide concentration in cabbage samples due to gamma radiation in samsun, Turkey 

  Altıkulaç, Aydan; Gümüş, Hasan (E D P Sciences, 2016)

  Establishing of radioactivity planes in foodstuff has emphasis because it allows the evaluation of population exposure to radiation by take nourishment. In this paper, the activity concentrations of Ra-226, Th-232, K-40 ...

• A SURVEY ON ELEMENTAL DISTRIBUTIONS OF VOLCANIC TUFF QUARRIES IN TURKEY 

  Turhan, Şeref; Yıldırım, Aykut; Kurnaz, Aslı; Hancerlioğulları, Aybaba; Altıkulaç, Aydan; Atıcı, Elif; Başsarı, Asiye (Parlar Scientific Publications (P S P), 2017)

  Volcanic tuff stones are widely used as coating materials for insulation and/or ornamental purposes in the construction sectors in Turkey. Some volcanic tuff quarries are close to the residential areas, water resources and ...

• EFFECTS OF CUTTING PARAMETERS AND TOOL-PATH STRATEGIES ON TOOL ACCELERATION IN BALL-END MILLING 

  Gök, Arif; Gök, Kadir; Bilgin, Mehmet Burak; Alkan, Mehmet Ali (Inst Za Kovinske Materiale I in Tehnologie, 2017)

  The determination of the cutting-parameter values that cause increases in vibration values is important to minimize the errors that can occur. Thus, the first aim of this study was to investigate the optimum cutting-parameter ...

• Research of production of CO2 from non-condensable gases in geothermal fluid and cost analysis 

  Karabacak, Rasim; Mucasiroğlu, Fehim; Tan, Mehmet; Karabacak, Sezgin (Pergamon-Elsevier Science Ltd, 2017)

  In this research, we studied the techniques for production of CO2 by using non-condensable gas containing CO2 at a rate of 96%, obtained from the condenser of the thermal plant set up at Kizildere Geothermal area. Moreover, ...

• Evaluation of Metal Contamination in Soil Samples Around Thermal Power Plant in Turkey 

  Turhan, Şeref; Altıkulaç, Aydan (Amer Inst Physics, 2018)

  Thermal power plants lead to major environmental problems such as the generation of acid gases and fly ash. Heavy metals contained in fly ash have potential risks for human health and soil and water ecosystems. Therefore, ...

• Radiometric measurement of lignite coal and its by-products and assessment of the usability of fly ash as raw materials in Turkey 

  Turhan, Şeref; Gören, Elif; Garad, Ahmed M. K.; Altıkulaç, Aydan; Kurnaz, Aslı; Duran, Celalettin; Özdemir, Adnan (Walter de Gruyter Gmbh, 2018)

  Lignite coal (LC) is a key energy source for electricity generation in Turkey. During lignite burning, huge amounts of fly ash (FA), bottom ash and slag are produced as by-products which contain radionuclides in the natural ...

• Ecological assessment of heavy metals in soil around a coal-fired thermal power plant in Turkey 

  Turhan, S.; Garad, A. M. K.; Hancerliogullari, A.; Kurnaz, A.; Goren, E.; Duran, C.; Aydin, A.; Altıkulaç, Aydan (Springer, 2020)

  In this study, heavy metal concentrations in agricultural surface soil (0-5 cm) samples collected from the area around the Kangal lignite-fired thermal power plant were determined using energy-dispersive X-ray fluorescence ...

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