Toughened ceramics, or bridging ceramics, are being developed in an attempt
to widen the application base of traditional ceramics, which are brittle and have low
resistance to crack extension. The crack growth resistance of these extrinsically
toughened ceramics has been shown to increase with crack length, and unlike
traditional ceramics,...
Much recent research has focused on the development lead-free perovskite piezoelectrics as environmentally compatible alternatives to lead zirconate titanate (PZT). Two main categories of lead free perovskite piezoelectric ceramic systems were investigated as potential replacements to lead zirconate titanate (PZT) for actuator devices. First, solid solutions based on Li, Ta,...
Because of its attractive material properties like high hardness, high toughness, and excellent high temperature strength, materials like silicon nitride are becoming more common for use in high performance applications. However, there have been limited studies of the fatigue behavior of small cracks in silicon nitride and other materials toughened...
Previous research has shown significant improvements in standard measurements of student learning in traditional classroom settings when constructivist instruction techniques are skillfully applied as opposed to its traditional counterpart, direct instruction. The purpose of this study is to apply the concept of constructivism in musical instruction. The working hypothesis is...
A dog or a cat has an incidentally detected heart murmur if the murmur is an unexpected discovery during a veterinary consultation that was not initially focused on the cardiovascular system. This document presents approaches for managing dogs and cats that have incidentally-detected heart murmurs, with an emphasis on murmur...
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This paper presents a brief history of social dance at Oregon State University (OSU) and discusses its key elements and context. Social dance has been part of campus life at OSU since the university was founded. Initially, dance was a social activity and means to interact with others, but as...
The advent of synthetic adhesives has transformed the structural applications of wood. However, a persistent issue in adhesively-bonded wood products has been moisture durability. When designing wood based composites, moisture durability will depend on both the wood phase and the adhesive phase. A key question, therefore, is how does one...
The effect of ambient environment on the fatigue behavior of two Zr-Ti-Cu-Ni-Be bulk metallic glasses (BMGs) is examined in the present study. The first metallic glass, Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅, was tested to establish the presence of an environmental effect in the fatigue growth curve measured in ambient air. Fatigue growth curves produced...
In A Portrait of the Artist as a Young Man, James Joyce used
the form or structure of his language to connote a meaning which
supported the content of the text. The elements of form he used
most often were sentence and paragraph structure, punctuation,
rhythm, and classical rhetorical schemes....
Many authorities state that the development of macabre images were a result of the plague that first swept through western Europe 1347-1350. However, many aspects of the macabre were already in place prior to the plague. A more realistic explanation for the macabre is in the modification of religious belief,...