The relative rates of hydrogen abstraction from o-xylene,
o-diethylbenzene and a series of four benzocycloalkenes by trichloromethyl
radical were determined at 70°. The strain energies of the
hydrocarbons and the corresponding radicals were calculated. A good
correlation between the log of the relative rates and the calculated
changes in strain...
Cancer is the second leading cause of death in the United States. To date, over 60% of current anticancer drugs were inspired by the discovery of chemical structure from nature, commonly known as a natural product. This work represents the biological characterization of several marine natural product compounds and their...
Physical Activity (PA) has been shown to significantly improve the overall health of adolescents. The health dimensions that are positively influenced by a consistent level of PA are multiple and range from body composition, chronic diseases management (diabetes, cardiovascular disease, etc.), chronic pain, and mental health (depression, anxiety, etc.). The...
The determination of failure is complicated when a structural
element is subjected to combined rather than simple stresses. This
is especially true when the principle of superposition does not apply.
For such cases, tests of the element under the expected loads are
required to determine its failure criteria.
In this...
A current trend in educational reform requires teachers to be proficient in employing technology in their classrooms. As a result of this trend, teachers need to be prepared to integrate technology into their teaching, and teacher preparation programs have a responsibility to prepare their students accordingly. The handheld computer (PDA)...
Deterministic source signature deconvolution is applied to the
processing of marine wide angle and vertical profiler data with air-gun
sources. Optimum results are obtained with a source signature
measured by stacking the signal reflected from a relatively homogeneous
abyssal plain sedimentary environment. This eliminates the need for
the unstable inverse...
Image classification is a difficult problem, often requiring large training sets to get satisfactory results. However this is a task that humans perform very well, and incorporating user feedback into these learning algorithms could help reduce the dependency on large amounts of labeled training data. This process has already been...
Mental illness is a universal phenomenon, but cultural context has a profound influence on how it is perceived, classified, and treated. Most systematic research on public attitudes toward mental illness has been completed in Western societies. The emergence of multicultural psychotherapy in the West has helped professionals recognize the extent...