It is usually assumed that most, if not all, small scale fishing communities, particularly in tropical countries, represents the poorest and most disadvantaged part of rural societies. As a result, these populations have been targeted for poverty alleviation by fisheries development programmes since the early 60's. Unfortunately many of these...
This study presents (1) the overall concept of assessing non-federal western rangeland soil loss rates at a national scale for determining areas of vulnerability for accelerated soil loss using USDA Natural Resources Conservation Service (NRCS) National Resources Inventory (NRI) data and the Rangeland Hydrology and Erosion Model (RHEM) and (2)...
Using phenolic scavengers different methods were examined to determine the optimum conditions for extracting polyphenol oxidase (PPO) from d'Anjou pears. Efficiency of the extraction was evaluated based on browning of the extract, PPO activity per g of pear tissue, absorption scan of 410 nm to -240 nm, and the isozyme...
Polyphenol oxidase (PPO) from d'Anjou pears was purified and some
molecular properties were studied. The extraction of PPO was
accomplished in the presence of the phenolic binder AG 2X-8 and Triton
X-100. Chlorophyll pigment was removed by chromatography resulting in
a clear, colorless enzyme extract. Three fractions of pear PPO...
Chemical stains that develop on commercial woods are
problems of great economic importance. The polyphenol
oxidases catalyze the oxidation of the phenolics that
naturally exist in plants to quinones when the cell structure is disrupted. The quinones produced are further
oxidized and polymerized to melanin, the pigment which is
responsible...
An analytical model of the radiative contribution to the
total heat transfer between a large-particle (greater
than 1 mm) gas-fluidized bed and an immersed horizontal
tube is discussed. The model is applied to the case of a
bubbling bed and the emulsion phase contribution is obtained from a detailed analysis...
Two mathematical computer games, POE and EQUATIONS, were used to
test the effects of games as learning aids in a university entry-level
intermediate algebra course. Specifically, this study investigated
whether use of these games would significantly increase student achievement
in the course and improve student attitude toward mathematics.
EQUATIONS is...