Purpose of the Study
The purpose of this study was (1) to identify the educational and
socio-economic characteristics of enrollees in the In-School Neighborhood
Youth Corps Program and (2) to determine those educational
and socio-economic characteristics that would predict potential achievement
in the In-School Neighborhood Youth Corps Program.
Procedures
A...
Lead is a ubiquitous environmental toxin known to cause neurological deficits in children. There is no biological need for lead and no safe level of lead in the body has ever been identified. Despite dramatic decline in mean blood lead levels nationwide since the U.S. EPA’s ban on lead-based paint...
Previous research on academic success in biology has focused on the influence of prerequisite knowledge and cognitive ability as measured by course grades or GPA. More recently, the field has considered the influence of non-cognitive factors such as grit, defined as passion and perseverance for long term goals. Both grit...
Numerous physical and chemical processes are required for successful ignition of a flammable mixture, many of which have been well characterized. However, one aspect of the ignition process that has received limited consideration is understanding the temperature of the spark kernel. A spark kernel is the volume of heated gas...
A method for measuring the spark-shower radiance of metals
when abraded on an abrasive grinding wheel was developed for
evaluating their sparking tendency. One hundred metals were tested
and rated relative to commercially pure iron. The radiance was
measured in units of energy per solid angle per area of the...
In the event of a mid-flight flameout of a gas turbine engine, reignition is paramount to occupant safety. Ignition at high altitude can be challenging, due in part to the potentially lower ambient pressures. An understanding of the effects of sub-atmospheric pressures on the temperature evolution of spark kernels is...