Biodiesel has become a more attractive fuel in recent years because of
its environmental benefits and the fact that it is made from renewable
resources. More importantly, biodiesel is becoming economically attractive
with the current oil prices which are expected to stay high in the future.
Currently, biodiesel is produced...
Membrane based heat pumps systems have attracted the attention of many research groups as a potentially more environmentally friendly alternative to vapor compression systems that are being used for space cooling in 90\% of the buildings in the United States. Several prototypes systems have been developed, with reported claims of...
Rate of emergence is an important character for stand
establishment. Ability of wheat seeds to germinate and
emerge rapidly under different climatic conditions may be
regulated by physical and/or physiological characteristics.
Seeds of 26 wheat varieties representing five classes
were produced in two different environments (Moro and Corvallis,
A generalized modeling system was developed for digital computer
simulation of the pharmacodynamic response of selected chemicals
introduced into mammalian systems. The modeling system is based on
the compartmental approach used extensively in pharmacodynamic studies
in which the mammal is assumed to be subdivided into compartments
which interact by means...
A standardized color code is used to aid the driver in the prompt
recognition of highway signs. At night, these signs are illuminated by
various light sources including the headlights and other fixed light
sources. These light sources may distort the appearance of the colors
of the signs at night....
The purpose of this thesis is to represent and calculate unsymmetrical
secondary faults on a grounded wye-to-delta transformer
This thesis is specifically concerned with the secondary connections
often encountered in industrial installations. Faults on these
systems have not been adequately investigated.
Three types of faults are considered, namely:
Digitally controlled switching DC-DC converters have recently emerged as an attractive alternative to conventional switching converters based on analog control techniques. This research focuses on eliminating the issues associated with the state of the art switching converters by proposing three novel control techniques: (1) a digitally controlled Buck-Boost converter uses...