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All Journal Science and Technology Indonesia Journal of Engineering and Technological Sciences
Resan, Kadhim K.
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics

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A Graphene Oxide Nano-Sheets: A Novel Eco-Friendly Approach for Tissue Engineering and Antibacterial Applications in Bone Disease Abdullah, Hind W.; Mubarak, Tahseen H; Resan, Kadhim K.
Science and Technology Indonesia Vol. 9 No. 4 (2024): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.4.806-817

Abstract

Obtaining novel scaffolds on bone disease-affected cells with osteoconductivity has recently been the focus of tissue engineering methodologies. Chemical treatment and microwave radiation form a novel strategy to create graphene oxide nanosheets (Gns) that decorate carbon crystal structures. This approach is proven to be eco-friendly. Gns was characterized using "X-ray diffraction, ultraviolet, and Fourier transform infrared spectrophotometers". The XRD spectra confirmed the crystalline structure of Gns. The Gns product was analyzed using "Raman spectroscopy. Transmission electron microscopy and field-emission scanning electron microscopy" exposed few layered surfaces of Gns. The TEM images showed Gns specifically decorated with carbon nanoparticles. The evidence demonstrated the novelty of Gns as a very effective bactericidal agent, suggesting its potential as a future antibacterial agent. Different concentrations of Gns and its derivatives showed different cell viabilities toward various cell lines, demonstrating the dependency of a biocompatible environment for good attachment on MG63 cells.
Chemical Machining of Aluminum Alloy 2024: The Critical Roles of Temperature and Solution Concentration in Enhancing Corrosion Rate and Surface Texture Muhammad, Ahmed K.; Mohammed, Tawfeeq W.; Resan, Kadhim K.
Journal of Engineering and Technological Sciences Vol. 56 No. 4 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.4.5

Abstract

Chemical etching is a crucial process in materials science that involves controlling material removal through chemical reactions. It offers precise surface manipulation for various applications. In this study, the focus was on investigating the influence of temperature and etching solution concentration on the corrosion rate and surface roughness of aluminum alloy 2024. A range of temperatures (from 35 to 65°C) was selected with increments of 5 °C. Three concentrations (9, 20 and 29 Be) of the etching solution (ferric chloride) were examined. The experimental results revealed that both the corrosion rate and surface roughness increased with higher temperatures and concentrations. The values of corrosion rate and surface roughness varied from 1.15 x 10-4 mm/min and 1.208 μm, respectively at 35 °C, to 1.291x10-3 mm/min and 7.431 μm, respectively at 65 °C. However, the effect of temperature was found to be more significant than that of concentration for the range under study. Understanding the relationship between temperature, concentration, corrosion rate, and surface roughness in chemical etching of Al-2024 enables the optimization of the process for tailored material properties. This can be helpful in industrial application fields that require precise surface manipulation, such as automotive, airplanes, aerospace, medical, households and consumer electronics
Co-Authors Abdullah, Hind W. Mohammed, Tawfeeq W. Mubarak, Tahseen H Muhammad, Ahmed K.