Individuals in and around a small college town were asked to take part in an interview to study their perception of wilderness activities depicted on television and other forms of media and the potential impact of these depictions on an individual's willingness to participate in wilderness activities. This study linked...
Micropolar Theory, a specialization of the Microcontinuum
Theory advanced by A. C. Eringen in the early 1960ts has been
used successfully in predicting the behavior of materials whose
inner structure is composed of rod-like elements. Liquid crystals
fall into this class of materials and their wide-spread use in
Industry and...
The purpose of this study was to investigate the distribution
and magnitude of scattered radiation from a typical
mobile radiographic examination as an aid in evaluating
the potential health hazards of the scattered radiation.
Also discussed are current radiation protection standards and
recommendations for mobile radiography.
A Manonite phantom represented...
Solubility studies on the heavy metal sulfides in liquid hydrogen
sulfide at room temperature were carried out using the isopiestic
method. The results were compared with earlier work and with a
theoretical result based on Raoult's Law. A relative order for the
solubilities of sulfur and the sulfides of tin,...
The use of size and shape tunable quantum confinement nanocrystals has many potential applications for use in semiconductors, optics and sensors. The synthesis of lead sulfide (PbS) and copper indium diselenide (CuInSe₂) nanoparticles are of particular interest for use in semiconductor, optoelectronics and bio-medical applications.
The continuous synthesis of lead...
In the western United States, bighorn sheep (Ovis canadensis) have suffered major die-offs in every state since the mid-1800s, and disease from domestic sheep (Ovis aries) has been a primary factor in these events. Beginning in the early 1900s, poly-factorial, poly-microbial pneumonia was identified as a major disease affecting bighorn...
The composition of the continental crust is closely tied to subduction zone magmatism. Elevated oxygen fugacity (fO₂) plays a central role in fostering crystallization of oxide minerals and thereby aids in generating the calc-alkaline trend of iron depletion that characterizes the continents. Along continental margins, arc magmas erupt through continental...
Full Text:
Stephanie B. Grocke a,b,∗, Elizabeth Cottrell a, Shanaka de Silva b, Katherine A. Kelley c
a Smithsonian
The composition of the continental crust is closely tied to subduction zone magmatism. Elevated oxygen fugacity (fO₂) plays a central role in fostering crystallization of oxide minerals and thereby aids in generating the calc-alkaline trend of iron depletion that characterizes the continents. Along continental margins, arc magmas erupt through continental...
Full Text:
applied by Crabtree and Lange (2012) and Cottrell
and Kelley (2011). Three USGS powdered rock standards
The composition of the continental crust is closely tied to subduction zone magmatism. Elevated oxygen fugacity (fO₂) plays a central role in fostering crystallization of oxide minerals and thereby aids in generating the calc-alkaline trend of iron depletion that characterizes the continents. Along continental margins, arc magmas erupt through continental...
The composition of the continental crust is closely tied to subduction zone magmatism. Elevated oxygen fugacity (fO₂) plays a central role in fostering crystallization of oxide minerals and thereby aids in generating the calc-alkaline trend of iron depletion that characterizes the continents. Along continental margins, arc magmas erupt through continental...