Materials Literature
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PURPOSE: To prospectively determine, by using dynamic imaging, whether a magnet placed over a specific area of the mouse brain could target systemically administered rhodamine-labeled magnetic fluid-loaded liposomes (MFLs) to that brain region. MATERIALS AND METHODS: Experiments were performed with a French Ministry o…
A method has been developed for creating bulk quantities of water-soluble single-walled carbon nanotubes (SWNTs) that contain multifunctional, acid-sensitive addends. Utilizing aryl diazonium salts, the repetitive functionalization protocol can yield multifunctional SWNTs containing moieties that would not be stable t…
In situ scanning tunneling microscopy has been used to examine the structure of the aniline adlayer and the conformation of polyaniline molecules produced electrochemically on a Au(111) electrode in 0.1 M sulfuric acid containing 30 mM aniline. As evidenced by the high-resolution STM imaging, a simple method of potent…
Abstract We show in this paper how zinc oxide (ZnO)/silver (Ag) composite microspheres can be prepared by the reduction of Ag(NH 3 ) 2 + with the reducing agent formaldehyde in aqueous solution on the surface of ZnO microspheres. During the preparation, Sn 2+ was absorbed on the surface of ZnO microspheres for sensiti…
Abstract A survey is presented on the crystallization kinetics and the morphology of miscible crystalline/crystalline polymer blends. There are only few corresponding systems. In them, however, a number of strange kinetic and structural phenomena can be observed: (i) spherulitic crystallization of the components side‐…
Carbon-coated Cu [Cu(C)] nanocapsules were prepared by a DC arc discharge method in a methane (CH 4 ) atmosphere, and characterized by x-ray diffraction (XRD), thermal gravimetric analysis (TGA), scanning differential thermal analysis (SDTA), transmission electron microscopy (TEM) and Raman spectroscopy. The results s…
Magnetic properties and bonding analyses of perovskite structure ${\mathrm{Co}}_{4}\mathrm{N}$ nitride have been investigated within density functional theory using both pseudopotential and all electron methods. In the same time, the structural and magnetic stabilities of pure cobalt in hexagonal close packed (hcp), f…
We report on a first principles calculation of spin-dependent quantum transport in Fe-doped single-wall carbon nanotube (CNT) junctions. For junctions of a pristine $(9,0)$ CNT in contact with Fe-doped $(9,0)$ CNT leads, the total current in parallel configuration of the moment is larger than that of antiparallel conf…
Acyl-CoA thioesterases (Acots) catalyze the hydrolysis of fatty acyl-CoA to free fatty acid and CoA and thereby regulate lipid metabolism and cellular signaling. We present a comprehensive structural and functional characterization of mouse acyl-CoA thioesterase 7 (Acot7). Whereas prokaryotic homologues possess a sing…
We report on the use of a chemical vapor deposition to nanocast ordered mesoporous carbon monoliths using mesoporous silica monoliths as template. The size and shape of the silica monolith template are well retained in the carbon resulting in a mechanically robust mesoporous carbon monolith. A relatively high level of…
The purpose of this study was to prepare ultrafine beclomethasone dipropionate (BDP) powder via antisolvent precipitation without any surfactants. Various solvents were screened to determine the suitable system for optimum processing while deionized water was kept as the antisolvent. Methanol was selected as the solve…
The role of external ionic strength in diatom biosilica formation was assessed by monitoring the nanostructural changes in the biosilica of the two marine diatom species Thalassiosira punctigera and Thalassiosira weissflogii that was obtained from cultures grown at two distinct salinities. Using physicochemical method…
PURPOSE: To prospectively evaluate the influence of superparamagnetic iron oxide (SPIO) or ultrasmall SPIO (USPIO) particles on the surface epitope pattern of adult mesenchymal stem cells (MSCs) by regulating the expression of transferrin receptor and to prospectively evaluate the influence of transfection agents (TAs…
Abstract A facile one‐step process for the fabrication of hybrid ZnO–dye hollow spheres with novel optical properties has been discovered. Addition of Evans blue (EB) dye to cetyltrimethylammonium bromide (CTAB) results in the formation of CTAB‐EB micelles through an ionic self‐assembly process, and the resulting mate…
High-energy-resolution $\mathrm{C}\phantom{\rule{0.2em}{0ex}}1s$ photoelectron spectra of graphite were measured at excitation energies of 340, 870, 5950, and $7940\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ using synchrotron radiation. On increasing the excitation energy, i.e., increasing kinetic energy of the photoelect…
The proposed use of nanocapsules in drug delivery systems promises many advantages over current procedures. The major advantage is the potential for patients to have significantly reduced side effects from taking the drug, especially for highly toxic drugs such as those used for cancer treatments. Nanotubes have been…
Surface transfer doping is demonstrated on hydrogenated diamond (100) by the electron acceptor, tetrafluoro-tetracyanoquinodimethane (F4-TCNQ). Synchrotron-based photoemission spectroscopy reveals that electrons are transferred from diamond to adsorbed F4-TCNQ, leaving a diamond surface p-type doped with a high areal…
The titanocene-catalyzed dehydrocoupling of the adduct Me 2 NH·BH 3 has been investigated by density functional theory (B3LYP). Unlike the thermal dehydrogenation of ammonia−borane, which was previously found to occur via a concerted mechanism, such a catalytic dehydrogenation of Me 2 NH·BH 3 has been found to be a st…
We present a complete analysis of the structure of polyethylene (PE) nanoparticles synthesized and stabilized in water under very mild conditions (15 degrees C, 40 atm) by a nickel-catalyzed polymerization in aqueous solution. Combining cryogenic transmission electron microscopy (cryo-TEM) with X-ray scattering, we de…
Abstract The aim of this work was to investigate the effect of glycerol contents on physical properties of cassava starch films. The films were prepared from film‐forming solutions (FFS) with 2g cassava starch/100g water and 0, 15, 30 and 45g glycerol/100g starch, and were analysed to determine its mechanical properti…