Materials Literature
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We describe a modified version of a magneto-optical Kerr magnetometer which allows measuring the hysteresis loop of a specific portion of the sample surface. The diameter of the sampled area can be optically tuned from several mm down to 15 μm. High quality hysteresis loops can be measured in a few seconds. Strong flu…
Solid-solid thermal-boundary resistance plays an important role in determining heat flow, in both cryogenic and room-temperature applications. The acoustic mismatch model (AMM) and the diffuse mismatch model (DMM) have traditionally been used to predict the thermal boundary resistance R b across the interface of two a…
Dissolution of commercial white fused and tabular Al 2 O 3 grains into a model silicate slag was investigated after 1 h at 1450° and 1600°C. Formation of CA 6 and hercynitic spinel layers was observed at all Al 2 O 3 /slag interfaces. The spinel layer was not always continuous, and so, compared with the CA 6 layer, it…
Localized corrosion resistance (pitting and crevice corrosion) of two high-alloy stainless steels (superduplex and superaustenitic) was studied in solutions with chloride concentrations of 200, 400, 600, and 6,000 ppm at pH values ranging from 2 to 6.5. Critical temperatures for pitting and crevice corrosion were calc…
Capillary flow is studied in polyester and polyamide yams and glass fibers using a technique based on the analysis of CCD images taken during the capillary rise of colored liquid in yams. The transition from dry yam to wet yam is not abrupt. Experiments analyze the causes of this gradually rising liquid front and the…
An overview of one of the most successful conducting polymers, poly(3,4-ethylenedioxythiophene) (PEDT) and its derivatives, is presented, detailing its early development, the synthesis of numerous hybrid and derivative materials, along with a description of the broad array of properties accessible and a description of…
A simulation of different electrical discharges under SF/sub 6/ atmosphere with subsequent surface and depth profile analysis is employed to investigate the effects that the formed corrosive byproducts have on gas-insulated system (GIS) electrodes. Cu, Al and Ag electrodes were treated with sparks (in the range of 0.1…
A revision is presented of the original description by Warren [ X-ray Diffraction , (1969), pp. 275–298. Massachusetts: Addison-Wesley] of the intensity distribution of powder-pattern reflections from f.c.c. metal samples containing stacking and twin faults. The assumptions (in many cases unrealistic) that fault proba…
ABSTRACT: Various procedures for extracting collagen and/or gelatin from megrim skins were compared on the basis of gelatin functional properties. It was possible to prepare a dry powder of soluble collagen with good viscoelastic and gelling properties, which can be converted into gelatin by dissolving at temperatures…
Abstract A new method for separate identification and determination of the spatial distribution of the two components of the energy intensity in an ultrasound bath (due to the ultrasound waves and cavitation activity) uses two media—cavitating (water) and noncavitating (silicon oil)—under the conditions of the acousti…
The orbital character, orientation, and magnetic polarization of the $\mathrm{O}\ensuremath{-}2p$ unoccupied states near the Fermi level ${(E}_{F})$ in ${\mathrm{CrO}}_{2}$ was determined using polarization-dependent x-ray absorption spectroscopy and x-ray magnetic circular dichroism from high-quality, single-crystal…
We investigate the three-dimensional morphology of the dendrite tip using the phase-field method. We find that, for low undercoolings, this morphology is ostensibly independent of anisotropy strength except for a localized shape distortion near the tip that only affects the value of the tip radius $\ensuremath{\rho}$…
The great reduction in thermal conductivity of skutterudites upon filling the ``void'' sites with rare-earth (RE) ions is key to their favorable thermoelectric properties but remains to be understood. Using lattice dynamic models based on first-principles calculations, we address the most popular microscopic mechanism…
The methods of the probability theory have been used in order to build up a model of hysteresis which is different from the well-known Preisach model. It is assumed that the system consists of large number of abstract particles in which the variation of an external control parameter (e.g., the magnetic field) may resu…
A theory is developed to explain various types of electronic collective behaviors in doped manganites ${R}_{1\ensuremath{-}x}{X}_{x}{\mathrm{MnO}}_{3}(R=\mathrm{La},$ Pr, Nd, etc. and $X=\mathrm{Ca},$ Sr, Ba, etc.). Starting from a realistic electronic model, we derive an effective Hamiltonian by utilizing the project…
As a means of effective utilization of fish water-soluble proteins (FWSP), which are mostly discarded into the waste water of seafood processing plants, the development and characterization of edible films from FWSP of blue marlin meat were investigated. The film-forming solutions were prepared from 3% FWSP solutions…
A detailed analysis of structural and position dependent characteristic features of helices will give a better understanding of the secondary structure formation in globular proteins. Here we describe an algorithm that quantifies the geometry of helices in proteins on the basis of their C alpha atoms alone. The Fortra…
The present investigation evaluates the effects of long-term, local delivery of insulin, insulin-like growth factor-1 (IGF-1), and basic fibroblast growth factor (bFGF) on fat-graft survival using a poly (lactic-co-glycolic-acid)-polyethylene glycol (PLGA/PEG) microsphere delivery system. Twelve-micrometer PLGA/PEG mi…
Previously, we reported the implantation of a single tissue engineered leaflet in the posterior position of the pulmonary valve in a lamb model. The major problems with this leaflet replacement were the scaffold's inherent stiffness, thickness, and nonpliability. We have now created a scaffold for a trileaflet heart v…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTAssembly of Phenylacetylene-Bridged Silver and Gold Nanoparticle ArraysJames P. Novak and Daniel L. FeldheimView Author Information Department of Chemistry, North Carolina State University Raleigh, North Carolina 27695 Cite this: J. Am. Chem. Soc. 2000, 122, 16, 3979–3…