The authors demonstrate an efficient room temperature source of terahertz radiation using femtosecond laser pulses as a pump and GaAs structures with periodically inverted crystalline orientation, such as diffusion-bonded stacked GaAs and epitaxially grown orientation-patterned GaAs, as a nonlinear optical medium. By changing the GaAs orientation-reversal period (504–1277 μm), or...
The evidence for a protective role of omega
3 fatty acids in CHD is becoming clearer and firmer,
especially for secondary prevention. Intakes of
approximately 800-1,000 mg per day appear to be a prudent
approach for the latter group of patients. The safety of
intakes of up to 3,000 mg...
This research examines two questions: 1) What stories do Christian teacher educators tell about their own White racial identity development? and 2) Is there an impact of studying White racial identity development on the praxis of Christian teacher educators? If so, in what ways? The researcher began the project with...
More than half of students in Washington state community colleges enroll in developmental mathematics, but a relatively small percentage of these students persist to the second year. Many students place into these courses and never enroll; others enroll at some point after the first academic term, even when faced with...
The relationship between self-concept and teacher competency
was examined among 29 female college students enrolled in a
beginning-level practicum of a preschool-teacher training program.
The Tennessee Self Concept Scale (TSCS) and the Preschool Teacher
Competency Rating Scale (PTCRS) were used to assess the subjects'
self-concepts and teacher competencies at the...
Temperature‐depth data from six boreholes in western Utah and nine boreholes in southeastern Utah are reanalyzed for evidence of ground surface temperature (GST) histories. We invert the temperature‐depth data using the functional space inverse algorithm of Shen and Beck [1991, 1992] which we prefer over previous inversions of these data...
We construct a mid-latitude (30° – 60° N) reduced temperature-depth profile from a global borehole temperature database compiled for climate reconstruction. This reduced temperature profile is interpreted in terms of past surface ground temperature change and indicates warming on the order of 1°C over the past 100 to 200 years....