Materials Literature
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Magnetic resonance imaging (MRI) has evolved into a sophisticated, noninvasive imaging modality capable of high-resolution anatomical and functional characterization of transgenic animals. To expand the capabilities MRI, we have developed a novel MR signal amplification (MRamp) strategy based on enzyme-mediated polyme…
The hydrothermal reaction of V2O5, Cu(CH3COO)2.H2O, 1,2-diaminopropane and [N(CH3)4]OH yields the novel three-dimensional open-framework solid [(Cu(1,2-pn)2)7-(V16O38(H2O))2].4H2O constructed from the new mixed-valence [V16O38(H2O)]7- clusters interconnected through mu 2-[Cu(1,2-pn)2]2+ groups.
Potentiodynamic and potentiostatic polarization, and the rotating disk electrode technique, were used to study the anodic behavior of tungsten (W) in a broad pH range (0.5-13.5) in H 3 PO 4 / KOH buffered solution. Surface oxides were found to play a prominent role in the anodic oxidation and dissolution of tungsten.…
Stable colloidal tetrapropylammonium manganese oxide (TPA-MO) was formed by the reduction of tetrapropylammonium permanganate with 2-butanol at room temperature. Thin films of TPA-MO were prepared using the sol-gel process by dip-coating directly onto clean nickel foils followed by heat-treatment under controlled cond…
ABSTRACT: Effects of glycerol, xylitol, and sorbitol on selected physical properties of whey protein isolate (WPI) films were examined. Increasing glycerol or sorbitol content led to increases in moisture content, water vapor permeability, and % elongation; and decreases in tensile strength, elastic modulus, and glass…
Electrochemical measurements were performed on single sulfide inclusions within a microcell to study their dissolution behavior and role in the initiation of pitting corrosion of 304 stainless steel in NaCl solutions. It was found that chloride ions catalyzed inclusion dissolution and caused metastable pits, and that…
We have developed a set of interatomic pair potentials for cadmium selenide based on a form similar to the Born–Mayer model. We show that this simple form of the pair potential, which has been used to describe the properties of alkali halides in the sixfold-coordinate structure, provides a realistic description of the…
The symposium, Nanophase and Nanocomposite Materials 2, was held in Boston, MA, on December 2--5, 1996, as a part of the 1996 Materials Research Society Fall Meeting. The field of nanophase and nanocomposite materials has grown tremendously since the first symposium was held on this topic at the 1992 MRS Fall Meeting.…
Research Article| January 01, 2002 X-ray Reflectivity as a Probe of Mineral-Fluid Interfaces: A User Guide Paul A. Fenter Paul A. Fenter Environmental Research Division, Argonne National Laboratory, ER-203, Argonne, Illinois, 60439-4843, U.S.A. Search for other works by this author on: GSW Google Scholar Author and Ar…
Large-diameter-sized mesoporous carbon monoliths with bicontinuous cubic structure of Ia3d symmetry have been synthesized by using mesoporous silica monoliths as hard templates; such carbon monoliths show potential application of advanced electrodes and electrochemical double layer capacitors.
In this paper we provide a general formulation for the electromagnetic wave interaction with stratified media and then specialize to slabs of negative isotropic media. The field solutions are obtained in all regions of the stratified medium. The characteristic waves in negative isotropic media are backward waves. We d…
Stealth (pegylated) liposomal doxorubicin (Doxil) has been extensively studied at the pre-clinical and clinical level in recent years. However, one issue not yet addressed is the effect of dose on tumor localization and therapeutic efficacy of Doxil. Although it has been reported that the pharmacokinetics of drug-free…
Effects of counterions and growth methods on polyaniline growth have been studied using the electrochemical quartz crystal microbalance and other related techniques. The results indicate that the polymer growth rates and the morphology of polymer surfaces are very different depending on the electrolytes and growth met…
Polyhydroxyalkanoates (PHAs) are polyoxoesters that are produced by many bacteria and that accumulate as intracellular granules. Phasins (PhaP) are proteins that accumulate during PHA synthesis, bind PHA granules, and promote further PHA synthesis. Interestingly, PhaP accumulation seems to be strictly dependent on PHA…
Although temperature effects on phytoplankton growth and photosynthesis can be clearly demonstrated in the laboratory, their relevance in the field is much harder to establish. Recently, however, it has been recognized that temperature has a significant influence on nitrogen uptake. In particular, temperate marine dia…
Abstract Transition-metal perovskite oxides exhibit a wide range of extraordinary but imperfectly understood phenomena. The best known examples are high-temperature superconductivity in copper oxides1, and colossal magnetoresistance in manganese oxides (‘manganites’)2, 3. All of these materials undergo a range of orde…
Research Article| January 01, 2002 The Crystal Chemistry of the Phosphate Minerals Danielle M.C. Huminicki; Danielle M.C. Huminicki Department of Geological Sciences, University of Manitoba Winnipeg, Manitoba, Canada R3T 2N2 Search for other works by this author on: GSW Google Scholar Frank C. Hawthorne Frank C. Hawth…
We develop a model for the excitation of erbium ions in erbium-doped silicon nanocrystals via coupling from confined excitons generated within the silicon nanoclusters. The model provides a phenomenological picture of the exchange mechanism and allows us to evaluate an effective absorption cross section for erbium of…
Differential scanning calorimetry (DSC), accelerating rate calorimetry (ARC), and X-ray diffraction experiments on the reaction of in various solvents have been performed. In the presence of sufficient solvent the reaction proceeds in a clear stepwise manner through solid phases as a function of temperature as Accompa…
Three cathode compositions and have been tested as solid oxide fuel cell (SOFC) cathodes at operating temperatures from 650 to 750°C. Sintering temperatures were established for each cathode composition to provide optimized cell performance. exhibited the highest power density at 750°C and 0.7 V), and indicated excell…