نتایج جستجو برای: moving nanoparticle

تعداد نتایج: 134798  

2009
Meng Shi Karyn Ho Armand Keating Molly S. Shoichet

A polymeric nanoparticle comprised of surface furan groups is used to bind, by Diels–Alder (DA) coupling chemistry, both targeting anti-human epidermal growth factor receptor 2 (anti-HER2) antibodies and chemotherapeutic doxorubicin (DOX) for targeted, intracellular delivery of DOX. In this new approach for delivery, where both chemotherapeutic and targeting ligand are attached, for the first t...

Journal: :Journal of the American Chemical Society 2015
Evelyn Auyeung William Morris Joseph E Mondloch Joseph T Hupp Omar K Farha Chad A Mirkin

Herein, we describe a strategy for converting catalytically inactive, highly crystalline nanoparticle superlattices embedded in silica into catalytically active, porous structures through superlattice assembly and calcination. First, a body-centered cubic (bcc) superlattice is synthesized through the assembly of two sets of 5 nm gold nanoparticles chemically modified with DNA bearing complement...

Journal: :Journal of pharmaceutical sciences 2009
Nashwa El-Gendy Eric M Gorman Eric J Munson Cory Berkland

Nanoparticle technology represents an attractive approach for formulating poorly water-soluble pulmonary medicines. Unfortunately, nanoparticle suspensions used in nebulizers or metered dose inhalers often suffer from physical instability in the form of uncontrolled agglomeration or Ostwald ripening. In addition, processing such suspensions into dry powders can yield broad particle size distrib...

2018
Frederick Campbell Frank L Bos Sandro Sieber Gabriela Arias-Alpizar Bjørn E Koch Jörg Huwyler Alexander Kros Jeroen Bussmann

Up to 99% of systemically administered nanoparticles are cleared through the liver. Within the liver, most nanoparticles are thought to be sequestered by macrophages (Kupffer cells), although significant nanoparticle interactions with other hepatic cells have also been observed. To achieve effective cell-specific targeting of drugs through nanoparticle encapsulation, improved mechanistic unders...

2017
Christoph Helma Micha Rautenberg Denis Gebele

The lazar framework for read across predictions was expanded for the prediction of nanoparticle toxicities, and a new methodology for calculating nanoparticle descriptors from core and coating structures was implemented. Nano-lazar provides a flexible and reproducible framework for downloading data and ontologies from the open eNanoMapper infrastructure, developing and validating nanoparticle r...

2013
Rema Sreenivasan Soumya Vadavanath Prabhakaran Vineetha Premachandran Latha Reshma Kozhiparambil Gopalan Raghu

This study deals with the preparation and characterization of selenium incorporated guar gum nanoparticle (SGG), and its effect on H9c2 cardiomyoblast. Herein, nanoprecipitation techniques had been employed for the preparation of SGG nanoparticle. The prepared nanoparticle had been subjected to various types of analytical techniques like transmission electron microscopy (TEM), X-ray diffraction...

2007
JlLLIAN F. BANFIELD ALEXANDRA NAVROTSKY Paul H. Ribbe Jillian F. Banfield Hengzhong Zhang Keren Jacobs A. Paul Alivisatos Alexandra Navrotsky Glenn A. Waychunas

COVER: Colorized, high-resolution transmission electron microscope lattice-fringe image of seven nanoparticles of UO 2 produced by the activity of sulfate-reducing bacteria. Note that the largest uraninite particle is <3 nm in diameter (Suzuki and Banfield, in preparation). Example: Predominantly inorganic nanoparticle formation in acid drainage 3 Other inorganic pathways for formation of nanop...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1390

in solvo-hydrothermal method, xrd pattern was indicated presence of intermediate of ammonium octatmolybdate and ammonium tetramolybdate, which were changed to stble phase of ?-moo3 annealing. sem images were indicated nanoparticle with semispheical morphology and tem image was demonstrated nanoparticles with a diameter size of 25nm. also in impregnate method. the xrd pattern was shown high crys...

Journal: :The journal of physical chemistry. B 2006
Nolan C Harris Ching-Hwa Kiang

DNA-gold nanoparticle assemblies have shown promise as an alternative technology to DNA microarrays for DNA detection and RNA profiling. Understanding the effect of DNA sequences on the melting temperature of the system is central to developing reliable detection technology. We studied the effects of DNA base-pairing defects, such as mismatches and deletions, on the melting temperature of DNA-n...

2005
Conroy Sun Omid Veiseh Nathan Kohler Jonathan Gunn Donghoon Lee Raymond Sze Andrew Hallahan Miqin Zhang WA

Folic acid (FA) was conjugated to superparamagnetic iron oxide nanoparticles to develop a tumor specific contrast agent for magnetic resonance imaging (MRI). In this scheme a bifunctional poly(ethylene glycol) (PEG) linker was utilized to both increase biocompatibility and reduce nanoparticle agglomeration. The uptake of nanoparticle-PEG-FA conjugates by folate-receptor (FR) positive MCF-7 cell...

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