نتایج جستجو برای: nanoparticles distribution

تعداد نتایج: 710972  

Journal: :iranian journal of pharmaceutical research 0
kumar ganesh division of pharmaceutical sciences, sri guru ram rai institute of technology and sciences, patel nagar, dehradun. dhyani archana division of pharmaceutical sciences, sri guru ram rai institute of technology and sciences, patel nagar, dehradun. kothiyal preeti division of pharmaceutical sciences, sri guru ram rai institute of technology and sciences, patel nagar, dehradun.

the present study , was an attempt to develop galactosylated albumin nanoparticles of simvastatin for treatment of hypercholesterolemia. by developing the galactosylated nanoparticulated delivery the required action of drug at the target site at liver can be provided. the advantage of targeting helps to reduce the systemic side effects which may be occur due to the distribution of the drug to t...

1998
Z. John Zhang Zhong L. Wang Bryan C. Chakoumakos Jin S. Yin

The magnetic properties of spinel nanoparticles are determined by crystal chemistry issues such as cation distribution and oxidation states. The cation distribution and oxidation state of Mn-Fe spinel nanoparticles have been systematically studied at various temperatures by using neutron diffraction and electron energy loss spectroscopy, respectively. The Mn-Fe spinel nanoparticles prepared by ...

Journal: :Advanced pharmaceutical bulletin 2014
Moorthi Chidambaram Kathiresan Krishnasamy

PURPOSE Nanoprecipitation is the convenient and commonly used method for the preparation of polymeric nanoparticles around 170 nm but yield particles with broad distribution, which require filtration step to produce particles with narrow distribution. Hence, the primary aim of the present study was to implement few modifications to the conventional nanoprecipitation method to reduce the mean pa...

Journal: :Scientific reports 2016
Kang Chen Hui-shu Li Bo-kai Zhang Jian Li Wen-de Tian

Field-theoretical method is efficient in predicting assembling structures of polymeric systems. However, it's challenging to generalize this method to study the polymer/nanoparticle mixture due to its multi-scale nature. Here, we develop a new field-based model which unifies the nanoparticle description with the polymer field within the self-consistent field theory. Instead of being "ensemble-a...

2013
Helene Kettiger Angela Schipanski Peter Wick Jörg Huwyler

Improved understanding of interactions between nanoparticles and biological systems is needed to develop safety standards and to design new generations of nanomaterials. This article reviews the molecular mechanisms of cellular uptake of engineered nanoparticles, their intracellular fate, and their distribution within an organism. We have reviewed the available literature on the uptake and disp...

2012
Luis Carlos Hernández Mainet Luis Ponce Cabrera Eugenio Rodriguez Abel Fundora Cruz Guillermo Santana Jorge Luis Menchaca Eduardo Pérez-Tijerina

Size-selected TiN nanoclusters in the range of 4 to 20 nm have been produced by an ionized cluster beam, which combines a glow-discharge sputtering with an inert gas condensation technique. With this method, by controlling the experimental conditions, it was possible to produce nanoparticles with a high control in size. The size distribution of TiN nanoparticles was determined before deposition...

A. Yousofnejad D. Ghanbari G. Nabiyouni, M. Seraj S. Farshad Akhtarianfar

Hard magnetic SrFe12O19 (SrM) nanoparticles were synthesized by a facile sonochemical reaction. The magnetic nanoparticles were then added to acrylonitrile-butadiene-styrene, polystyrene, polycarbonate, and poly sulfone to make magnetic nanocomposites. The magnetic properties of the samples were also investigated using an alternating gradient force magnetometer. The strontium ferrite nanop...

2016
Yuefeng Liu Jingjie Luo Yooleemi Shin Simona Moldovan Ovidiu Ersen Anne Hébraud Guy Schlatter Cuong Pham-Huu Christian Meny

Assemblies of nanoparticles are studied in many research fields from physics to medicine. However, as it is often difficult to produce mono-dispersed particles, investigating the key parameters enhancing their efficiency is blurred by wide size distributions. Indeed, near-field methods analyse a part of the sample that might not be representative of the full size distribution and macroscopic me...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2008
abdolreza samimi mojtaba ghadiri

to resolve handling problem of nanoparticles, due to their small size, a new methodology of electro-spraying and freeze-drying was developed for colloidal nanoparticles of silica and titania to transform them to solid macro-scale nanoparticle assemblies.  the assemblies were then redispersed in an aqueous system to investigate the effect of formulation of original solutions and the process para...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

the photocatalytic coatings were prepared via incorporating the modified titania nanoparticles into epoxy-based inorganic-organic hybrid coatings. titania nanoparticles were first synthesized from tetra-n-butyl titanate using sol-gel methods by two different calcination treatments, i.e., in mild condition (80°c) and 500°c. the formed anatase nanoparticles were further modified as titania-silica...

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