Volume 21, Issue 3 (September 2024)
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- Increased blasting pressure results in higher surface roughness.
- Alumina-blasted samples show greater roughness and coating thickness than other abrasives.
- Detailed statistical analysis confirms proportionality between coating thickness, surface roughness, and deposition time.
- Optimized the anodizing process for magnesium alloys, leading to enhanced corrosion resistance and improved biocompatibility.
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- The magnetic properties of high entropy intermetallic compounds (HEICs) are explored.
- Magnetic properties of HEICs is mainly determined by the magnetic momentum of the constituent elements.
- (CoCuFeMnNi)Al and (CoCuFeMnNi)Zn3 displayed ferromagnetic behavior at 5 K.
- (FeCoMnNiCr)3Sn2, (FeCoNiMn)3Sn2 and Cu3(InSnSbGaGe) exhibited an linear magnetization at 300 K.
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- Stress relieving did not change the original microstructure of acicular α' laths.
- Annealing transformed the original microstructure of α' laths to α- and β-laths.
- Increased soaking temperature increased the widths of the α- and β-laths.
- The YS, UTS, and modulus of elasticity decreased with an increase in test temperature.
- An increase in test temperature caused an increase in the ductility of the alloy.
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1- The magnetic properties of Mn-Al system during milling have been investigated.
2- The structural characteristics of Mn50+xAl50-x (x = 0, 2.5, 5, 7.5) have been investigated.
3- The magnetic properties of Mn50+xAl50-x (x = 0, 2.5, 5, 7.5) alloys were evaluated.
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- Activated carbon with high water vapor adsorption capacity was produced from industrial waste rice husk carbon.
- Iodine adsorption showed that the surface area of the activated carbon was approximately 615 m2/g.
- After KOH-activation, the adsorption capacity was enhanced to more than 900%.
- The water vapor adsorption capacity of the produced activated carbon was higher than other commercial adsorbents.
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- Presence of additives and the interlayer can reduce the formation of by-products
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1-This is the first study exploring the protective and antioxidant activity of the GEL-CH-GING composite against radiation harmful effects.
2- The data demonstrated that this composite could protect chondrocyte from the destructive effects of radiation.
3- GEL-CH-GING composite found to be effective in reducing radiation-induced oxidative stress.
4-The biomaterial could alleviate the destructive effects of ionizing radiation and thus is useful as a radio protective for cartilage tissue.
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To the best of our knowledge simultaneous role of both PEG and Triacetin on the mechanical properties of acrylic resin has not been under attention by the investigators and in order to fill the literature gap in this issue two mentioned plasticizers were chosen.
Muddukrishnaiah Kotakonda

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Sajisha V.S

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Aiswarya G

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Safeela Nasrin Pakkiyan

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Najamol A Alungal

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Mayoora Kiliyankandi K

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Divya Thekke Kareth

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Naheeda Ashraf Verali Parambil

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Saranya Sasi Mohan

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Renjini Anil Sheeba

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Sarika Puthiya Veettil

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Dhanish Joseph

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Nishad Kakkattummal

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Afsal Bin Haleem MP

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Safeera Mayyeri

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Thasneem Chemban Koyilott

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Nasiya Nalakath

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Samuel Thavamani B

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Famila Rani J

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Aruna Periyasamy

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Chellappa V Rajesh

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Rameswari Shanmugam

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Marimuthu Poornima

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Tina Raju

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Roshni E R

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Sirajudheen Mukriyan Kallungal

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Lekshmi MS Panicker

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Saranya K G

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Shilpa V P
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Biogenic Synthesis of Papain-CuNPs
Papain-conjugated copper metallic nanoparticles (Papain-CuNPs) were successfully synthesized using Papain and CuSO4.5H2O. Characterization techniques including UV-visible spectroscopy, FT-IR, HR-TEM, XRD, FE-SEM, zeta potential, and zeta sizer were employed to confirm the formation and properties of Papain-CuNPs.
Characterization of Papain-CuNPs
UV spectroscopy revealed a surface plasmon resonance (SPR) at 679 nm, confirming the formation of Papain-CuNPs. FT-IR spectrum displayed peaks indicative of O-H, N-H, and C=O functional groups, affirming the presence of Papain-CuNPs. EDAX analysis confirmed the presence of copper in the nanoparticles. Zeta potential (-42.6 mV) and zeta size (99.66 d. nm) indicated the stability and size of Papain-CuNPs. XRD analysis confirmed the crystalline nature of the synthesized nanoparticles.
Morphological Analysis of Papain-CuNPs
FE-SEM and HRTM revealed an oval structure for the Papain-CuNPs, with a size range of 16.71244–34.84793 nm.
Antibacterial and Antifungal Activities
Papain-CuNPs exhibited significant antibacterial activity against human infectious microorganisms, including Citrobacter spp, Pseudomonas aeruginosa, and Candida albicans. Notably, the synthesized Papain-CuNPs showed a substantial inhibitory zone (15 mm) against clinical P. aeruginosa.
Mechanism of Action
MIC (Minimum Inhibitory Concentration) of 125 µg/ml displayed bactericidal activity against P. aeruginosa. The mechanism of action was further elucidated through electron microscopy (FE-SEM and HRTM), confirming cell damage and cell shrinking upon exposure to Papain-CuNPs.
Biomedical Applications
The significant antibacterial activity of Papain-CuNPs suggests their potential application in the treatment of P. aeruginosa infections, showcasing their biomedical relevance.
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