1,721,005 research outputs found
Design of Chipless Tag with Electromagnetic Code for Paper-based Banknote Classification
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Effect of micron-sized circle array patterns on the improvment of YVO 4:Eu3+ thin film phosphors
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Microstructure control of TiAl alloys containing beta stabilizers by directional solidification
No full textPhase transformation at elevated temperatures in Ti-Al-X(X = Mo, Re, W) systems has been investigated by analyzing the dendrite morphology of arc-melted buttons. It was found that the addition of beta stabilizers, such as Mo, Re and W, shifted the beta phase field at liquid/solid temperatures to the high Al composition side. So, the beta phase formed as a primary crystal even in higher Al compositions in Ti-Al-X ternary systems compared with Ti-Al binary. The addition of W was found to be the most effective beta (bcc) stabilizer among Mo, Re, W, and the Ti-47Al-2W composition was selected for beta solidification. In the directional solidification of Ti-47Al-2W alloy at the growth rate of 90 mm/h using the Bridgman type DS apparatus, it was found that the lamellar orientation in the columnar grains was parallel or inclined with the angle of 45degrees to the growth direction. This means that the beta phase forms at the solid/liquid interface in the Ti-47Al-2W alloy. The tensile elongation of DS alloys was clearly improved compared with that of the polycrystalline alloy with a fully lamellar microstructure, while maintaining the same yield stress level. (C) 2002 Elsevier Science B.V. All rights reserved
Synthesis of low temperature burnable P(MMA-co-BMA) binder and control of carbon residue during baking process of BAM phosphor paste
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
White powder electroluminescent device with ZnS:Cu, Cl and Tb 3Al5O12:JCe3+ phosphors using layered structure
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