A high volume sampling system, employing Nuclepore filters and
designed for sampling particulate in the plumes from industrial
sources using a light aircraft, is described. The effluent of kraft
paper mills was sampled using this system and then analyzed by
electron microscopy.
Size distributions of particles were obtained at several...
Neryl pyrophosphate, rather than geranyl pyrophosphate, is
believed to be the immediate biological precursor of the cyclohexanoid
monoterpenes because the cis-2, 3-double bond readily permits cyclization.
Biosynthesis of neryl pyrophosphate could occur by either of
two principal mechanisms: direct cis condensation of dimethylallyl
pyrophosphate with isopentenyl pyrophosphate or trans-cis isomerization...
Based on experimental investigations the present study evaluates flow instability and
void fraction in a fractal-like branching microchannel network with rectangular cross-section. The hydraulic diameter of the channels ranged from 308μm at the inlet to 143μm at the outlet. The flow network used is characterized by set branching ratios for...
A mathematical model of the atmosphere in an airshed is developed, which relates pollutant source distributions and intensities
to the volume of air available for dispersion and to pollutant concentrations
or air quality standards. It can be used as a tool for obtaining
an answer to an air resource management...
Emergency stop controls are essential parts of industrial machinery because they
are designed to stop the operation in case of emergencies without risks to operators,
equipment, products, or facilities. Current guidelines for emergency stop controls have
been formulated based on experience but not on empirical studies.
The main objectives of...
Modern commercial air travel is considered by most transportation specialists to be the safest of all forms of transportation. While safe, any loss of life is tragic and the only really acceptable state of commercial air transport safety is that of 'zero-tolerance' where no accident is acceptable.
Research has demonstrated...
The present research sought to investigate individual differences in the way individuals process intuitive risk judgments. The present investigation is centered on Fuzzy Trace Theory (Brainerd & Reyna, 1991), a developmental dual process theory of cognition which posits two ways in which individuals process information, gist and verbatim processing. 228...
This research presents a u-channel based study of the natural remanent magnetization (NRM), the laboratory magnetization, Anhysteretic Remanent Magnetization (ARM), and magnetic susceptibility (k), from the upper 100 m of International Ocean Discovery Program (IODP) Expedition 383 Site U1543 in the eastern South Pacific sector of the Southern Ocean. Alternating...
The purpose of this study was to examine the problem solving processes of
Thai gifted students when they solved non-routine mathematical problems. The
research questions guiding the study were: (1) What is the nature of the problem
solving processes that Thai gifted students use as they engage in solving non-routine...
Paleoclimate archives have revealed abrupt climate events that are superimposed on more gradual climate changes throughout the last glacial and deglacial periods. The underlying causes of such rapid climate changes are still poorly understood, but the strong expression of these events in northern hemisphere records likely points to climatic mechanisms...