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Materials Science and Engineering

Michigan Tech Publications

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Nanoparticles

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Full-Text Articles in Engineering

Size Distribution, Elemental Composition And Morphology Of Nanoparticles Separated From Respirable Coal Mine Dust, Shoeleh Assemi, Lei Pan, Xuming Wang, Titilayo Akinseye, Jan D. Miller Jan 2023

Size Distribution, Elemental Composition And Morphology Of Nanoparticles Separated From Respirable Coal Mine Dust, Shoeleh Assemi, Lei Pan, Xuming Wang, Titilayo Akinseye, Jan D. Miller

Michigan Tech Publications

Nanoparticles, defined as particles with one dimension below 100 nm, contribute little to the total mass concentration in respirable coal mine dust (RCMD) toxicological studies, but they could have a considerable part in the adverse health effects by RCMD inhalation. It has been shown that inhaled nanoparticles can penetrate deep into the lung and could plausibly contribute to acute and chronic pulmonary diseases by triggering oxidative stress formation and inducing inflammation. RCMD nanoparticles from samples collected in an underground mine in the United States were analyzed by a particle separation technique, field-flow fractionation (FFF), for size, morphology, and elemental composition. …


Antibacterial And Anticancer Activity Of Hydrothermally-Synthesized Zinc Oxide Nanomaterials Using Natural Extracts Of Neem, Pepper And Turmeric As Solvent Media, C. Abinaya, R. Manjula Devi, P. Suresh, N. Balasubramanian, N. Muthaiya, N. D. Kannan, J. Annaraj, V. Shanmugaiah, Joshua Pearce, P. Shanmugapriya, J. Mayandi Apr 2020

Antibacterial And Anticancer Activity Of Hydrothermally-Synthesized Zinc Oxide Nanomaterials Using Natural Extracts Of Neem, Pepper And Turmeric As Solvent Media, C. Abinaya, R. Manjula Devi, P. Suresh, N. Balasubramanian, N. Muthaiya, N. D. Kannan, J. Annaraj, V. Shanmugaiah, Joshua Pearce, P. Shanmugapriya, J. Mayandi

Michigan Tech Publications

A novel and simple wet chemical hydrothermal synthesis method was employed in the preparation of zinc oxide (ZnO) nanoparticles using neem (N), pepper (P) and turmeric (T) extracts as solvent media. The structural and optical properties as well as the antibacterial and anticancer properties of all the samples (ZnO, N/ZnO, P/ZnO, T/ZnO and NPT/ZnO) were characterized and analyzed. Solvent media was found to have an effect on both the size and the morphology of the nanoparticles, which in turn effected their optical and cytotoxic properties. The colony forming unit (CFU) assays were done for E. coli, S. aureus and S. …