Search Results

You are looking at 161 - 170 of 576 items for :

  • "nanoparticle" x
  • All content x
Clear All
Reaction Kinetics, Mechanisms and Catalysis
Authors: Viorel Chihaia, Karl Sohlberg, Monica Dan, Maria Mihet, Alexandru R. Biris, Petru Marginean, Valer Almasan, George Borodi, Fumiya Watanabe, Alexandru S. Biris, and Mihaela D. Lazar

is around 6% ( Table 1 ). Gold and silver contents were found to be 1% for Au and 0.9% for Ag. The TEM images of the nickel based catalysts ( Fig. 1 ) show uniform dispersion of Ni nanoparticles in all samples. The dark spots from Fig. 1a

Restricted access

Crystallisation behaviour of palm oil nanoemulsions carrying vitamin E

DSC and synchrotron X-ray scattering studies

Journal of Thermal Analysis and Calorimetry
Authors: Rizwan Shukat, Claudie Bourgaux, and Perla Relkin

droplets. Using simultaneous DSC/X-Ray scattering measurements, we observed that the long-term vitamin protection against degradation by lipid nanoparticles containing HMT TAG presented 2 L α → 2 L β′ polymorphic transitions under cooling and re

Restricted access

(AISI 316L) and as the filler (nanoparticles) nc-TiC 0,85 was used. Nanocomposite (TiC/steel) and reference (316L steel) samples for testing were formed by SLS/M technique in shape of balls of 3 mm diameter and of mass in the order of 160 mg. In the SLS

Open access

up to 500 °C, with formation of MgCrO 4 as intermediary amorphous phase. By thermal decomposition of MgCrO 4 at 500 °C, weakly crystallized MgCr 2 O 4 powder is obtained. The obtained chromites powders consist of fine nanoparticle with diameters

Restricted access

0.2 O 2 catalysts are prepared by a simple, one-step surfactant-assisted method of nanoparticle assembly. The textural and structural properties of CuO/Ti 0.8 Ce 0.2 O 2 catalysts are characterized by XRD, TGA, BET, XPS and H 2 -TPR. The effect of

Restricted access

Gradishar S Tjulandin N Davidson 2005 Phase III trial of nanoparticle albumin-bound paclitaxel compared

Restricted access

Abstract  

This article presents a model, based on dimensionless groups, to predict the viscosity of nanoparticle suspensions, nanofluids. This empirical model expresses the viscosity of a nanofluid as a function of the following: viscosity of the base liquid, particle volume fraction, particle size, properties of the surfactant layer, and temperature. According to this model, viscosity changes nonlinearly with nanoparticle loading. Compared to other models, the new model is in good agreement with experimentally determined viscosity data for alumina–water nanofluids.

Restricted access

Summary  

Angiogenesis is integral to the development and progression of atherosclerotic disease and solid tumor growth. New microvessels form in atherosclerotic plaque and the presence of new vessels has been associated with carotid plaque instability. Likewise, solid tumor growth depends upon angiogenesis to provide tumor cells with oxygen and nutrients. Recently, Lanza et al. have demonstrated molecular imaging of angiogenesis both in human melanoma xenografts in nude mice and atherosclerotic rabbits by magnetic resonance imaging (MRI) with clinical magnet strengths using ανβ3-targeted nanoparticles developed in their lab. ανβ3-integrin is a selective molecular epitope expressed by angiogenic endothelium and the MRI contrast agent consists of a lipid-encapsulated, liquid perfluorocarbon nanoparticle directly coupled to a selective ανβ3 ligand. The nanoparticle also contains the paramagnetic contrast agent gadolinium linked to the nanoparticle as Gd-DTPA-bis-oleate. In this work we report on the use of neutron activation analysis to confirm the Gd content of the nanoparticle formulations and determine the biodistribution of Gd post injection.

Restricted access
Journal of Thermal Analysis and Calorimetry
Authors: E. Kowalska, P. Byszewski, M. Popławska, L. Gładczuk, J. Suwalski, R. Diduszko, and J. Radomska

Abstract  

Properties of FeC60 solid samples were investigated by X-ray diffraction, 57Fe Mssbauer spectroscopy and magnetic measurements in order to examine interaction of iron with fullerene. FeC60 samples were prepared by decomposition of adduct based on the fullerene and ferrocene derivative. The samples exhibited superparamagnetic properties originating from an interaction between FeC60 complexes within nanoparticles. Each nanoparticle consisted of hundreds to thousands complexes. The results of experiments are compared with theoretical studies using PM3 method based on the Neglect of Diatomic Differential Overlap approximation.

Restricted access

Abstract  

The thermal decomposition characteristics of gold acetate to produce gold nanoparticles were investigated. A rapid and violent fragmentation of the gold acetate particles was observed at approximately 103±20°C when a rapid heating rate of 25°C min−1 was used, leading to formation of nanosized spherical and partially coalesced gold particles. Particle size analysis was used to investigate possible relationships between the gold acetate crystallite size and the gold nanoparticles produced by thermal decomposition. The results indicate rapid (<0.14 ms) coalescence of the gold particles occurs for fragments in close proximity.

Restricted access