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Study on Enhanced Antibacterial and Cytotoxicity of Pure and Cadmium Doped Cerium Oxide against Gram-Positive and Gram-Negative Bacteria

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Soft Nanoscience Letters 2019年第1期9卷 1-16页

作者： Killivalavan Govindarasu Kavitha Gnanasekaran Sathyaseelan Balaraman Baskaran Iruson Senthilnathan Krishnamoorthy Sathyaseelan Balaraman Babu Padmaraj elayaperumal manikandan Sivakumar Dhananjayan Department of Physics Bharathiar University Coimbatore India P. G. Research & Department of Physics A. M. Jain College Meenambakkam India Department of Physics University College of Engineering Arni (A Constituent College of Anna University Chennai)Arni India Department of Physics University College of Engineering Arni (A Constituent College of Anna University Chennai)ArniIndia Department of Physics Arignar Anna Govt. Arts College Cheyyar Tamil Nadu India Department of Physics VIT University Vellore India Department of Physics Thiruvalluvar University TUCAS Campus Thennangur India UNESCO UNISA Africa Chair in Nanosciences & Nanotechnology College of Graduate Studies University of South Africa Muckleneuk Ridge Pretoria South Africa Department of Physics Sree Krishna College of Engineering Unai Anai India

Pure and Cadmium (Cd) doped Cerium oxide nanoparticles (CeNPs) have been synthesised by the simple chemical co-precipitation technique. Cadmium ions of concentrations 1, 3 and 5 mol% were doped to investigate their influence on the structural and optical properties of CeO2. The synthesised samples have been subjected to X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis and high-resolution transmission electron microscopy (HRTEM). The XRD and Raman patterns have witnessed the cubic structure of the cerium oxide nanoparticles. The average particle size of CeO2 was found to be around 10 nm. SEM image has also ascertained that the grain size of pure CeO2 appeared is bigger than that of the Cd-doped, which intern indicates the grain growth upon doping. Besides, the antibacterial activity of the cadmium doped cerium oxide nanoparticles against some human pathogens revealed that they have exhibited the maximum zone of inhibition against gram-positive bacteria than the gram-negative species. Further, the cytotoxic effect of Cd-doped CeO2 sample is examined in cultured (MCF-7, A549 and Hep-2) cell.

关键词： Co-Precipitation XRD SEM HRTEM Antibacterial Activity

Effect on Optical and Antibacterial Activity of SnO2 and CuO Blended SnO2 Nanoparticles

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Simulation Aspects of a Full-Car ATV Model Semi-Active Suspension

Soft Nanoscience Letters（软纳米科学报） 2023年第2期

作者： Suresh Gopal Baskaran Iruson Sathyaseelan Balaraman Senthilnathan Krishnmoorthy manikandan elayaperumal

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Engineering（科研） 2012年第7期4卷 384-389页

作者： Kasi Kamalakkannan A. elayaperumal Sathyaprasad Managlaramam Anna University Chennai India Ashok Leyland Chennai India Hindustan College of Engineering Chennai India

This paper is concerned with the design, modeling, and simulation and testing procedure of All Terrain Vehicle (ATV) fitted with SAS, which is used in BAJA SAEINDIA standards. Using CATIA V5, the model is created, which is fulfilling the guidelines of BAJA SAEINDIA rules. ATV is having the two different pairs of quarter car models of suspensions where dampers filled with MR Fluid (SAS) in front and rear wheels. In front SLA wishbone and rear McPherson Strut are fixed. The physical representation of the ATV is converted into the mathematical modeling and it is imported in MATLAB SIMULINK software and analyzed for ATV’s performance. The ATV is analyzed for its vertical, pitch and roll motions which include total number of 7 Degrees of Freedom. The road excitation modeling also incorporated with the equations. This paper, elaborates the approaching of simulation method only. The virtual model of ATV has involving greater significance of reducing the cost involved in real time testing as well as the results are replica of experimental results.

关键词： ATV BAJA SAEINDIA SLA Wishbone McPherson Strut SAS (Semi active suspension) MATAB SIMULINK Simulation and Testing

Studies on antioxidant properties of starfish Luidia maculata(Muller&Troschel,1842)off Parangipettai,Southeast coast of India

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Journal of Coastal Life Medicine 2014年第9期 694-698页

作者： Anbukkarasu Suguna Subramanian Bragadeeswaran elayaperumal Natarajan Masilamani Mohanraj Centre of Advanced Study in Marine Biology Faculty of Marine SciencesAnnamalai UniversityParangipettai-608502India

Objective:To investigate the antioxidant properties of starfish Luidia ***:The crude ethanol extract was partially purified using liquid-liquid partition and size exclusion *** antioxidant properties of partially purified fractions were determined using the following methods:determination of total phenolic content,DPPH radical scavenging assay,hydrogen peroxide radical scavenging assay and reducing power ***:Among the five fractions,collected fraction 3,4 and 5 exhibited antioxidant *** phenolic content was high(360μg GAE/g)in fraction *** DPPH assay,fraction 3 showed the highest IC_(50)value 0.27 mg/mL and hydrogen peroxide scavenging assay showed the highest IC_(50)value of 0.07 mg/mL in fraction ***,fraction 3 showed the highest absorbance(0.3)in reducing power assay when compared to fraction 4 and ***:In conclusion,the present study shows the extract of starfish Luidia maculata(F3)possesses good antioxidant activity.

关键词： Antioxidant Total phenolic content Starfish

Isotherm and Thermodynamic Studies on the Bio Adsorption of Textile Industrial Effluents onto Chitosan Nanoparticle from Macolor Niger (White Snapper)

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Journal of Biomaterials and Nanobiotechnology 2019年第1期10卷 1-10页

作者： Gokulalakshmi elayaperumal Bhaskaran Sathyapriya M. Vanitha Chinnathambi Human Genetics Laboratory Sree Balaji Dental College and Hospital Bharath Institute of Higher Education and Research Chennai Tamilnadu India Department of Anatomy Sree Balaji Dental College and Hospital Bharath Institute of Higher Education and Research Chennai Tamilnadu India Department of Biotechnology Guru Nanak College Chennai Tamilnadu India

Fish scale wastes are generally discarded in the environment through fish processing industries and local market vendors. It is one of the excellent and efficient renewable bioproducts. Consequently, a number of bioactive compounds have been identified including bioactive peptides, collagen, chitosan, and gelatin which are commercially marketed. The current study involves the extraction and generation of chitosan nanoparticles from fish scales. The synthesized chitosan nanosubstances were categorized by Field Emission Scanning Electron Microscopy (FESEM). The viability of utilizing fish scales as an economical bio-adsorbent for elimination of textile dye was studied on industrial effluent. Fourier transform infrared spectroscopy (FTIR) was used to study the dye adsorption of chitosan nanoparticles before and after the dye treatment. With chitosan nanoparticle treatment of the textile effluents, removal of COD was improved to 80% and the turbidity removal efficiency was improved up to 90%. Thus, the present study provides an excellent bio-adsorbent chitosan nanoparticle generated from fish scales which have potential application as an adsorbent in bioremediation like wastewater treatment.

关键词： Chitosan Nanoparticle Fish Scale Bio Adsorption Textile Effluents