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BACKGROUND: The authors compared the therapeutic effects of doxorubicin in two formulations: free in saline suspension and encapsulated in sterically stabilized liposomes composed of hydrogenated soy phosphatidylcholine/2cholesterol/polyethylene glycol-distearoyl-phosphatidyl-ethanolamine (Doxil, Liposome Technology,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHyperbranched Aromatic Polyesters with Carboxylic Acid Terminal GroupsS. Richard Turner, Frank Walter, Brigette I. Voit, and Thomas H. MoureyCite this: Macromolecules 1994, 27, 6, 1611–1616Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Pu…
The influence of the surface elastic constant ${\mathit{K}}_{13}$ on director fluctuations in nematic liquid crystals is discussed. An explicit expression for the correlation function in the case of the homeotropically aligned cell is presented. It is shown that in this case ${\mathit{K}}_{13}$ changes the anchoring s…
The mechanisms of degradation of rigid Polyurethane foams (PU) filled with Ammonium Phosphate (AP) as inorganic flame retardant, have been studied using thermogravimetric analysis (TGA) and differential thermal analysis (DTA) both in inert (N 2 ) and oxidizing (air) atmospheres. TGA analyses have shown that the filler…
Abstract Several series of multifunctional silicon‐containing epoxide monomers and oligomers have been prepared using rhodium catalyzed hydrosilation reactions. Dialkyl and diarylsilanes can be condensed with vinyl epoxides to give high yields of the desired diepoxides while the hydrosilation of alkyl and aryl silanes…
A reversible phase transition involving jumping of the crystal in the process of heating and cooling is described. If crystals are fixed to the heating area, physical expansion and contraction are observed when heated and cooled respectively. From the crystal structure of Form I and the powder diffraction of Form II i…
Experimental methods are presented for observing local fabric deformation during uniaxial tensile loading of a woven fabric. These experiments include the traditional ravel strip test as well as the use of video taping, encapsulation, and photographing fabrics varying in weave texture, yarn type (ring and rotor spun),…
The influence of Nb‐doping from 1.0 to 8.0 at.% on grain size, ferroelectric phase transition, lattice strain, and electrical properties of BaTiO 3 Cerumics has been studied. A change in the Nb‐doping effect was observed at compositions around 3.5–4.5 at.% Nb. The impedance behavior revealed that specimens of low Nb‐d…
The unusual electrical properties of metallophthalocyanines (M(Pc)S) have made them the centerof much interest recently, in particular as candidates for the fabrication of novel molecularelectronic devices.M(Pc)‐basedrectifiers have been known for 20 years, but now a new non‐Schottky‐type of rectification has been dis…
Abstract Pyrazoles were found as a novel class of blocking groups for isocyanates. Adhesive mixtures of pyrazole blocked isocyanates and amine terminated prepolymers like Jeffamines® (Texaco Chem. Co.) combine excellent reactivities (gelation times within minutes at 100–120°C), good latencies (more than 170 days at 40…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation A. H. Eng, S. Kawahara, Y. Tanaka; Trans-Isofrene Units in Natural Rubber. Rubber Chemistry and Technology…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyoxometalate Diphosphate Complexes. Folded Macrocyclic Dodecatungstates, [(O3PXPO3)4W12O36]16- (X = O, CH2)Uli Kortz, Geoffrey B. Jameson, and Michael T. PopeCite this: J. Am. Chem. Soc. 1994, 116, 6, 2659–2660Publication Date (Print):March 1, 1994Publication History Publ…
Aluminum oxide (Al2O3) films are used in a variety of applications including optics and microelectronics. We have deposited aluminum oxide films on 5 in.2 polished fused quartz substrates by the rf sputtering method. It was found that properties of these films such as refractive index and density varied significantly…
Abstract PdAs 2 , PdSb 2 , PtSb 2 and PtBi 2 have been formed from reactions of 1‐gram samples of the elements in quartz tubes at 923 K, and their crystal structures have been reinvestigated. These materials crystallize with the pyrite structure. The lattice constant, a , and the positional parameter, x, of the nonmet…
Barium gallogermanate glasses were prepared with substitutions of Al 2 O 3 , Y 2 O 3 , La 2 O 3 , and Gd 2 O 3 for Ga 2 O 3 . The effects of these substitutions on the glass transformation temperature, viscosity, thermal expansion, and molar volume have been determined. The changes in properties associated with each s…
A theoretical model is demonstrated that provides a reliable prediction of thermal transmission through nonwoven structures. The validity of the model is confirmed in experiments that measure the thermal conductivity of various nonwoven barrier fabrics. The model is used to characterize the relative contribution of he…
We present a second virial theory of the isotropic-to-nematic phase transition in solutions of (polydisperse) wormlike micelles interacting via a hard-core excluded volume. Analytical expressions are derived for the osmotic pressures and the chemical potentials of the surfactant molecules in the coexisting phases. In…
Size effects in two-phase Boolean magnets composed of an aligned hard phase and a soft phase with high magnetization are investigated. In 'overcritical' magnets, where the size of the soft regions is larger than the Blochwall width /spl delta//sub h/ of the hard phase, the energy product is reduced compared to the cor…
Earlier covalent modification experiments indicated that histidine, arginine, and carboxylic acid residues were involved in the catalytic mechanism of the acid phosphatase enzyme from human prostate. The present study utilizes site-directed mutagenesis to evaluate the catalytic importance of 7 residues of human prosta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChiral Poly(dipentylsilylene) CopolymersHolger Frey, Martin Moeller, and Krzysztof MatyjaszewskiCite this: Macromolecules 1994, 27, 7, 1814–1818Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://pubs.acs.…