A model of an exhaust plume was developed and programmed
on a digital computer. The purpose of the model was to predict the
concentration and size distribution of ice particles produced from
automobile exhaust during arctic conditions. The model accounted
for the nucleation, growth, and freezing of the condensed water...
Steroid organoboranes have been found to be useful synthetic
intermediates. Attempted pyrolyses, based on simple trialkylborane
cyclizations, have not yielded C-19 or C-18 functionalized steroids,
but have produced isomerized systems not otherwise available.
Thus, hydroboration of cholesterol followed by pyrolysis at
215° gives 31% of 2-cholestene-6α-ol and 49% of a...
This study compares arthropod biodiversity in areas infested with invasive cheatgrass Bromus tectorum with areas not infested. The goal of this project was to establish a baseline of the types of arthropods found in both habitats, discover if there is more diversity in either habitat and to find any patterns...
The sudden failure of metal structures under load, which has
been a design problem for many years, is characterized by a crack
propagation rate which approaches the speed of sound in the material.
These failures, which are often known as catastrophic fractures,
may be divided into two types which depend...
A new method for evaluating the Lyapunov exponent for a Hamiltonian system
involves a spatial evaluation, rather than a numerical time integration. The
introduction of a novel vector field to the phase space allows the Lyapunov exponent
to be expressed in a form that does not involve time. The Lyapunov...
Monitoring physical activity has been a dominant topic of research for many years. Being physically active has been shown to decrease health related issues, including obesity, cardiovascular disease, and even premature death. Multiple researchers have studied monitoring physical activity, but the actual method of measuring physical activity in a free-living...