Design and development of a methanol concentration controller for fuel cells
Thesis (M. Tech.) (Engineering: Electrical, Dept.: Electronic Engineering))--Vaal University of Technology, 2008.
Materials Literature
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Accelerated drop detachment in dense granular suspensions
We experimentally study the detachment of drops of granular suspensions using a density matched model suspension with varying volume fraction ({\phi} = 15% to 55%) and grain diameter (d = 20 {\mu}m to 140 {\mu}m). We show that at the beginning of the detachment process, the suspensions behave as an effective fluid. Th…
Skin Friction and Cross-flow Separation on an Ellipsoidal Body During Constant Yaw Turns and a Pitch-up Maneuver with Roll Oscillation
The skin friction and cross-flow separation location on a non-body-of-revolution (non-BOR) ellipsoidal model performing constant-yaw turns and a pitch-up maneuver, each with roll oscillation were studied for the first time. The detailed, low uncertainty, flow topology data provide an extensive experimental database on…
Materials in a Space Environment
ADVERTISEMENT RETURN TO ISSUEEditorialNEXTMaterials in a Space EnvironmentTimothy K. MintonJean-Francois Roussel and Jean-François RousselCite this: ACS Appl. Mater. Interfaces 2010, 2, 10, 2687–2688Publication Date (Web):September 9, 2010Publication History Received21 August 2010Published online9 September 2010Publis…
Shape Memory Bulk Metallic Glass Composites
Glass-forming and shape memory metals may provide a route to fabricating materials with enhanced mechanical properties.
ChemInform Abstract: N,N′‐Diarylsquaramides: General, High‐Yielding Synthesis and Applications in Colorimetric Anion Sensing.
Abstract A simple, efficient, and widely applicable method is reported.
ChemInform Abstract: Synthesis, Structure, Magnetic, Optical and Moessbauer Properties of Na2FeSn(PO4)3.
Abstract The title compound is prepared by solid state reaction of a stoichiometric mixture of Na2CO3, (NH4)2HPO4, Fe2O3, and SnO2 (200, 600, and 950 °C, 48 h) and characterized by powder XRD, UV/VIS diffuse reflectance spectroscopy, magnetic measurements, and Moessbauer spectroscopy.
ChemInform Abstract: Surface‐Protected Etching of Mesoporous Oxide Shells for the Stabilization of Metal Nanocatalysts
Abstract Review: 170 refs.
ChemInform Abstract: Multidimensional Potential of Boron‐Containing Molecules in Functional Materials
Abstract Review: 117 refs.
ChemInform Abstract: Catalytic Chemistry of Supported Heteropolyacids and Their Applications as Solid Acids to Industrial Processes
Abstract Review: 73 refs.
ChemInform Abstract: From Helical Polyacetylene to Helical Graphite: Synthesis in the Chiral Nematic Liquid Crystal Field and Morphology‐Retaining Carbonization
Abstract Review: 70 refs.
The natural bifurcating internal thoracic artery graft: another technique for bypassing two vessels with one conduit
We present our reproducible technique of achieving two bypasses from selected pedicled internal thoracic arteries. We feel that awareness of this technical modification is to the benefit of patients.
Macromol. Mater. Eng. 9/2010
Cover: The picture presents a scanning electron microscopy image of the foam structure of a glycerol-plasticized wheat gluten material that is produced by freeze drying. The insert shows an optical image of this wheat gluten foam without glycerol. Further details can be found in the article by T. O. J. Blomfeldt, R. T…
Interlayer exchange coupling beyond the proximity force approximation
Ion bombardment has been shown to be capable of enhancing the interlayer exchange coupling in a trilayer system that exhibits giant magnetoresistance. We demonstrate that this phenomenon can be derived from the phase coherence among scattered paths within the two rough interfaces when their topographies are correlated…
UV EMISSION OF TETRAGONAL ZrO 2 NANOCRYSTALS EMBEDDED IN ZrSiO 4 AMORPHOUS MATRIX
Amorphous films Zr 0.8 Si 0.2 O 2 were deposited on quartz substrates at room temperature, by using pulsed laser deposition technique. After annealing at high temperature, Zr 0.8 Si 0.2 O 2 films suffer a phase separation to precipitate tetragonal ZrO 2 nanocrystals in ZrSiO 4 amorphous matrix. Their crystal structure…
SEEBECK EFFECT OF NANO-SCALE P-TYPE SILICON FILMS ABOVE ROOM TEMPERATURE
Nano-scale Al -doped silicon films are prepared by magnetron sputtering. The amount of Al doped in the films is controlled by regulating the Al sputtering power and duration. With appropriate amount of Al , the Seebeck coefficient of the Si films at room temperature is larger than 168 μV/K, which increases with temper…
Time course of fibronectin in the peri-implant tissue and neointima formation after functional implantation of polyester-based vascular prostheses with different porosity in pigs
Intima hyperplasia, resulting from extracellular matrix (ECM) secretion, can lead to vascular prosthesis occlusion and is a major problem in vascular surgery. Fibronectin might contribute to ongoing ECM secretion. However, the exact role of fibronectin and its influence on neointima formation remains unclear. This stu…
Studies on Methylolated Cyclohexanone-Formaldehyde Resin–Epoxy Resin Condensation Products
Methylolated cyclohexanone-formaldehyde resins having different hydroxyl values were reacted respectively with commercial epoxy resins, i.e., diglicidyle ether of bisphenol A and brominated DGEBA. The resultant polyether products were designated as I(a-f) and II(a-f), respectively. All the polyether samples were chara…
Investigation of the Jahn–Teller effect in the ${\rm C}_{60}^{{-} } $ monoanion under high pressure
Abstract We report the Jahn–Teller (JT) dynamics of the ${\rm C}_{60}^{{-} } $ monoanion under pressure in (Ph4P)2IC60. (Ph4P)2IC60 was synthesized by electrochemical crystallization and investigated by infrared transmission measurements up to 5 GPa. The behavior of two T1u vibrational modes of ${\rm C}_{60}^{{-} } $…
An introduction to TR-X: a simplified tool for standardized analysis
TR-X is a multi-platform program that provides a graphical interface to Monte Carlo N-Particle transport (MCNP) and Monte Carlo N-Particle transport eXtended (MCNPX) codes.Included in this interface are tools to reduce the tedium of input file creation, provide standardization of model creation and analysis, and exped…