Yazarlar

• Aydin, Ayşe Nur(1)
• Demirkiran, Nizamettin(1)
• Serdar, Osman(1)
• Tanaydin, Mehmet Kayra(1)
• Çiçek Çi̇Men, Işıl Canan(1)

• MakaleAçık Erişim2026Scopus SJRQ4/r/munzur/1104
  Oxidative Stress Response to Zinc Oxide, Copper Oxide and Iron (III) Oxide in Gammarus pulex; [Gammarus pulex'te Çinko Oksit, Bakır Oksit ve Demir (III) Oksit'e Karşı Oksidatif Stres Tepkisi]

  Aydin, Ayşe Nur; Çiçek Çi̇Men, Işıl Canan; Serdar, Osman

  Nanoparticles (NPs) are increasingly used across various fields of science and technology, including food science from crop harvesting to final food consumption. With their widespread application in daily life, the environmental effects of nanoparticles have become an important area of academic investigation. In this study, Gammarus pulex species was selected as research material/bioindicator species to investigate the effects of zinc oxide (ZnO), copper oxide (CuO), and iron(III) oxide (Fe2O3) on aquatic life. To conduct the experiments, separate setups were established for each of the nanoparticles (ZnO, CuO, and α-Fe2O3). Following ten organisms for each concentration group (10, 20, and 40 ppm) with corresponding control groups, exposures were performed for 24 and 96 hours. Samples were collected at both time points and biochemical analyses were conducted using homogenization procedures. The results were evaluated statistically. According to the findings, SOD activity increased significantly after exposure to ZnO, CuO, and Fe2O3. CAT activity did not show any change under ZnO NP exposure, whereas a decrease was observed under CuO and Fe2O3 NP exposures. However, a significant increase in TBARS levels and a significant increase in GSH levels were observed following nanoparticle exposure. Based on the study data, exposure to ZnO, CuO, and Fe2O3 appears to induce oxidative stress in G. pulex.

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• MakaleYalnız künye2014Scopus SJRQ3/r/munzur/4381
  Preparation of cupric oxide by isothermal oxidation of metallic copper powder produced by electroless deposition

  Demirkiran, Nizamettin; Tanaydin, Mehmet Kayra

  In this study, cupric oxide powder was prepared from copper powder using a thermal oxidation method. The copper powder was produced by electroless deposition method using ascorbic acid as a chemical reducing agent. The oxide powder product was synthesized at 500A degrees C for 5 h. The metallic copper and oxide powder were characterized using X-ray diffraction and scanning electron microscopy. Based on results from these analytical techniques, it was determined that cupric oxide was successfully synthesized from the thermal treatment of copper powder and was in agglomerated state.

  AtıfWoS2

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