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Nanoparticles On My Mind
By KIM BELLARD Nanoparticles are everywhere!  By that I mean, of course, that there seems to be a lot of news about them lately, particularly in regard to health and healthcare.   But, of course, literally they could be anywhere and everywhere, which helps account for their potential, and their potential danger. Let’s start with one of the more startling developments: a team at the University of Miami’s College of Engineering, led by Professor Sakhrat Khizroev, believes it has figured out a way to use nanoparticles to “talk” to the brain without wires or implants.  They use “a novel clas...
Source: The Health Care Blog - March 23, 2021 Category: Consumer Health News Authors: Christina Liu Tags: Health Tech Kim Bellard nanoparticles Source Type: blogs

Temperature-driven directional coalescence of silver nanoparticles
This study is of importance not only in terms of its fundamental academic interest but also in terms of the thermal stability of silver nanoparticles.
Source: Journal of Synchrotron Radiation - March 31, 2016 Category: Physics Authors: Yan, S.Sun, D.Gong, Y.Tan, Y.Xing, X.Mo, G.Chen, Z.Cai, Q.Li, Z.Yu, H.Wu, Z. Tags: silver nanoparticles SAXS XRD coalescence nanocrystal research papers Source Type: research

Epitaxial Ni nanoparticles on CaF2(001), (110) and (111) surfaces studied by three-dimensional RHEED, GIXD and GISAXS reciprocal-space mapping techniques
The development of growth techniques aimed at the fabrication of nanoscale heterostructures with layers of ferroic 3d metals on semiconductor substrates is very important for their potential usage in magnetic media recording applications. A structural study is presented of single-crystal nickel island ensembles grown epitaxially on top of CaF2/Si insulator-on-semiconductor heteroepitaxial substrates with (111), (110) and (001) fluorite surface orientations. The CaF2 buffer layer in the studied multilayer system prevents the formation of nickel silicide, guides the nucleation of nickel islands and serves as an insulating la...
Source: Journal of Applied Crystallography - May 16, 2017 Category: Physics Authors: Suturin, S.M. Fedorov, V.V. Korovin, A.M. Sokolov, N.S. Nashchekin, A.V. Tabuchi, M. Tags: epitaxial growth nickel nanoparticles fluorides on silicon reflection high-energy electron diffraction RHEED X-ray diffraction grazing-incidence small-angle X-ray scattering GISAXS three-dimensional reciprocal-space mapping research pape Source Type: research

The search for extraterrestrial intelligence - podcast
The most intensive ever search for alien lifeThis week it was revealed that astronomers are about to start the most intensive ever search for alien life. The Breakthrough Listen project will scan stars in 100 galaxies for radio and optical signatures that indicate someone, or something, is out there.Until now, the search for extraterrestrial intelligence - or SETI - has been met with an eerie silence. What makes scientists so convinced it's worthwhile looking for alien life? Continue reading...
Source: Guardian Unlimited Science - July 24, 2015 Category: Science Authors: Hannah Devlin Tags: Science Astronomy Seti (Search for Extraterrestrial Intelligence) Source Type: news

Sustained release of alpha ‐methylacyl‐CoA racemase (AMACR) antibody‐conjugated and free doxorubicin from silica nanoparticles for prostate cancer cell growth inhibition
This article presents silica nanoparticles for the sustained release of AMACR antibody-conjugated and free doxorubicin (DOX) for the inhibition of prostate cancer cell growth. Inorganic MCM-41 silica nanoparticles were synthesized, functionalized with phenylboronic acid groups (MCM-B), and capped with dextran (MCM-B-D). The nanoparticles were then characterized using Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, zeta potential analysis, nitrogen sorption, X-ray diffraction, and thermogravimetric analysis, before exploring their potential for drug loading and contro...
Source: Journal of Biomedical Materials Research Part B: Applied Biomaterials - November 1, 2022 Category: Materials Science Authors: Toyin Aina, Ali A. Salifu, Sonu Kizhakkepura, Yiporo Danyuo, John D. Obayemi, Josephine C. Oparah, Theresa C. Ezenwafor, Killian C. Onwudiwe, Chukwuemeka J. Ani, Suchi S. Biswas, Chinyerem Onyekanne, Olushola S. Odusanya, Jonathan Madukwe, Wi Tags: RESEARCH ARTICLE Source Type: research

Evaluation of biological synthesized platinum nanoparticles using Ononidis radix extract on the cell lung carcinoma A549.
Abstract Due to the search for new methods for synthesizing nanomaterials, this work proposes the biological synthesis of platinum nanoparticles using Ononidis radix extract. The synthesized platinum nanoparticles were characterized by UV-Vis, Scanning Electron Microscopy (SEM) with EDS profile, Fourier transform infrared spectroscopy (FTIR), Transmission Electron Microscopy (TEM) and Atomic Force Microscopy (AFM). The examination conducted by means of Transmission Electron Microscopy showed the presence of spherical and hexagonal platinum nanoparticles. Atomic Force Microscopy indicated the presence of locally ag...
Source: Biomedical Microdevices - July 24, 2019 Category: Biomedical Engineering Authors: Dobrucka R, Romaniuk-Drapała A, Kaczmarek M Tags: Biomed Microdevices Source Type: research

Antiproliferative activity of Camellia sinensis mediated silver nanoparticles on three different human cancer cell lines
Conclusion: The superior activity of the silver nanoparticles may be due to its spherical shape and smaller particle size 10–30 nm as confirmed from NTA and TEM analysis. The data obtained in the study reveal the potent therapeutic value of biogenic silver nanoparticles.
Source: Journal of Cancer Research and Therapeutics - November 28, 2018 Category: Cancer & Oncology Authors: Anu Yadav Vijay D Mendhulkar Source Type: research

Silver ‐gold alloy nanoparticles biofabricated by fungal xylanases exhibited potent biomedical and catalytic activities
This study further em phasizes the significance of xylanases in nanobiotechnology as it has established the potential of xylanases to synthesize Ag‐AuNPs which is being reported for the first time.This article is protected by copyright. All rights reserved.
Source: Biotechnology Progress - May 2, 2019 Category: Biotechnology Authors: J.A Elegbede, A Lateef, M.A Azeez, T.B Asafa, T.A Yekeen, I.C Oladipo, S.H Abbas, L.S Beukes, E.B Gueguim ‐Kana Tags: RESEARCH ARTICLE Source Type: research

Selenite bioreduction with concomitant green synthesis of selenium nanoparticles by a selenite resistant EPS and siderophore producing terrestrial bacterium
Biometals. 2023 Apr 29. doi: 10.1007/s10534-023-00503-y. Online ahead of print.ABSTRACTEnvironmental bacterial isolates play a very important role in bioremediation of metals and toxic metalloids. A bacterial strain with high selenite (SeO32-) tolerance and reducing capability was isolated from electronic waste dump site in Banaras Hindu University, Varanasi, India. Based on 16 S rRNA sequencing and BLAST search, this bacterial isolate was identified as Bacillus paramycoides and designated as strain MF-14. It tolerated Sodium selenite up to 110 mM when grown aerobically in LB broth and reduced selenite into elemental selen...
Source: Biometals - April 29, 2023 Category: Biochemistry Authors: Pooja Yadav Shraddha Pandey Santosh Kumar Dubey Source Type: research