Integrating magnetism into semiconductor electronics
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Materials Literature
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Technical Basis for Revision of the Pressurized Thermal Shock (PTS) Screening Limit in the PTS Rule (10CFR50.61)
One potentially significant challenge to the structural integrity of the reactor pressure vessel (RPV) in a pressurized water reactor (PWR) is posed by a PTS event wherein rapid cooling of the downcomer occurs, an event which may be followed by re-pressurization.The temperature drop produced by rapid depressurization…
Temperature-Dependent Emission Spectrum of Ba[sub 3]MgSi[sub 2]O[sub 8]:Eu[sup 2+], Mn[sup 2+] Phosphor for White-Light-Emitting Diode
The temperature dependence of emission spectrum of full-color emitting , is investigated. As an increase of temperature, three emission bands show anomalous blueshift along with broadening bandwidth and decreasing intensity. With increasing temperature, variations in both the peak position and the intensity-quenched t…
A Linear Dynamic Model for Two-Strand Yarn Spinning
A linear dynamic model is established for two-strand or Sirospun yarn processing. Approximate oscillating frequencies in the vertical and horizontal directions are obtained. By suitable choice of certain processing parameters, the mixture construction after the convergence point can be optimally matched.
Size-controlled synthesis of quantum-sized EuS nanoparticles and tuning of their Faraday rotation peak
Size-controlled EuS nanoparticles were synthesized by the reaction of europium metal with thiourea as a sulfur source in liq. NH3, whose surface was confirmed to be modified with thiourea by FT-IR measurement, and the opto-magnetic properties (Faraday effect) of the EuS nanoparticles were investigated by using PMMA fi…
Palladium nanoclusters in microcapsule membranes: From synthetic shells to synthetic cells
We show that polyelectrolyte shells may be perfect hosts and microreactors for catalysis. Using a layer-by-layer self-assembly process to form hollow polyelectrolyte capsules, we show that individual layers can be replaced by palladium and gold nanoclusters forming robust cell-type microcapsules. Testing the catalytic…
Protective Action of Vanadate at Defected Areas of Organic Coatings on Zinc
The kinetics of vanadate release from an organic coating and the stability and protective ability of the newly formed vanadate-based films on zinc surfaces have been studied with respect to self-healing ability of vanadate-pigmented organic coatings. The results were compared with those obtained with chromate. The kin…
Hydroxyapatite reinforced poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) based degradable composite bone plate
Poly(3-hydroxybutyrate) (P3HB), its co-polymers with 3-hydroxyvalerate (HV) (PHBV8 and PHBV22), and their hydroxyapatite (HAp) containing composites (5 and 15%, w/w) were prepared by injection molding. PHBV bone plates with low valerate contents and 15% (w/w) HAp appear to have better mechanical properties than the ot…
The effect of PAMAM dendrimers on human and bovine serum albumin at different pH and NaCl concentrations
The effect of PAMAM G3.5, PAMAM G4 and PAMAM-OH G4 dendrimers on human and bovine serum albumins has been studied by fluorescence spectroscopy at different pH and ionic strength. It has been shown that the interactions between dendrimers and proteins depend on pH and the efficiency of interactions can be regulated by…
Are Oblique Orientated α-Helices Used by Antimicrobial Peptides for Membrane Invasion?
Oblique orientated alpha-helices are highly specialised protein structural elements that penetrate membranes at a shallow angle and are used to promote membrane destabilisation by a number of protein classes. Here, the use of extended hydrophobic moment methodology shows that the amphibian extrudates, aurein 1.2 and c…
The dielectric constant in a thermal phase transition magnetic material composed of rubidium manganese hexacyanoferrate observed by spectroscopic ellipsometry
In this work, the dielectric constant of rubidium manganese hexacyanoferrate was observed in the ultraviolet, visible, and near-infrared regions using spectroscopic ellipsometry (SE). The SE data for ε drastically varied with the phase transition between the high-temperature and low-temperature phases, e.g., the gain…
Performance Comparison of Internal Reforming Against External Reforming in a Solid Oxide Fuel Cell, Gas Turbine Hybrid System
Solid Oxide Fuel Cell (SOFC) developers are presently considering both internal and external reforming fuel cell designs. Generally, the endothermic reforming reaction and excess air through the cathode provide the cooling needed to remove waste heat from the fuel cell. Current information suggests that external refor…
Estimation of Charge-Transfer Resistivity of Pt Cathode on YSZ Electrolyte Using Patterned Electrodes
Yttria-stabilized zirconia ͑YSZ͒ electrolyte disks with patterned platinum ͑Pt͒ electrodes having different three phase boundary ͑TPB͒ lengths ͑l TPB ͒, but the same electrode-electrolyte interface area, were deposited on one of the two faces using photomicrolithography.Platinum counter electrode was applied on the ot…
Assembling carbon nanotubosomes using an emulsion-inversion technique
Novel micro-capsules (carbon nanotubosomes) have been fabricated by cross-linking shells of amine-functionalized multi-walled carbon nanotubes (MWNTs) produced by their adsorption on water-in-oil emulsion drops followed by an emulsion-inversion.
The step-wise assembly of an undecanuclear heterotrimetallic cyanide cluster
The step-wise assembly of the high nuclearity cluster, {[Ni(II)(H2O)5]6[Co(III)(tmphen)2]3[Fe(II)(CN)6]2}13+, is achieved by treating {[Co(tmphen)2]3[Fe(CN)6]2} with six equivalents of Ni(ClO4)2 in aqueous MeOH.
Relationship between the Structure and Properties of Pharmaceutical Crystals
The majority of drug products are solid dosage forms, most of which contain the drug substance in the crystalline state. This review considers the forces responsible for crystal packing, the various types of pharmaceutical crystals, and the methods used to determine the structure of pharmaceutical crystals. These topi…
Synthesis and characterization of new optically active poly(amide-imide)s containing epiclon andL-methionine moieties in the main chain
Epiclon [3a,4,5,7a-tetrahydro-7-methyl-5-(tetrahydro-2,5-dioxo-3-furanyl)-1,3-isobenzofurandione] (1) was reacted with L-methionine (2) in acetic acid and the resulting imide-acid 3 was obtained in high yield. The diacid chloride 4 was prepared from diacid derivative 3 by reaction with thionyl chloride. Thermostable p…
Photochromism of single crystals composed of dioxazolylethene and dithiazolylethene
Although dioxazolylethene 1a did not show any photocoloration in the single crystalline phase, 1a displayed photochromism in the mixed crystal containing both 1a and dithiazolylethene 2a ; the mixed crystal changed color from colorless to red, orange, and yellow upon irradiation with light of appropriate wavelengths.
Measurement of Surface Exchange Coefficient on Porous La[sub 0.6]Sr[sub 0.4]CoO[sub 3−δ] Samples by Conductivity Relaxation
A technique using conductivity relaxation on porous bodies was used to determine the oxygen surface exchange coefficient, k chem , of mixed conducting La 0.6 Sr 0.4 Co O 3 − δ (LSC40). The results from the porous bodies were compared with values of k chem obtained on dense samples of LSC40 using the same technique. Co…
Application of Ba[sup 2+]⋅Mg[sup 2+] Co-doped Sr[sub 2]SiO[sub 4]:Eu Yellow Phosphor for White-Light-Emitting Diodes
Large increases in the efficiency of the Sr 2 Si O 4 : Eu yellow phosphor under the 450 ‐ 470 nm excitation range have been achieved by adding the co-doping element ( Ba 2 + and Mg 2 + ) in the host. In order to apply to white light-emitting diodes (LEDs), we have synthesized a Ba 2 + ∙ Mg 2 + co-doped Sr 2 Si O 4 : E…