The major historical studies that have examined American
biology have emphasized the development of experimental biology at
the end of the nineteenth century. In this characterization, the
descriptive branch of biology has often been treated as less than
important and, in several cases, as a hindrance in the application
Freeze-dried concentrates (DRICONS) of lactic streptococcal
starter bacteria (single and mixed strains) were prepared in different
lyophilization media and stored under vacuum and several gases.
DRICONS were tested for survival and acid-producing activity after
storage for up to a year by rehydration with water to the original
pre-lyophilization volume. Acid...
The central problem of this study was to construct and validate
an instrument to measure the complexity of the contexts in which student
teaching occurs and to use the instrument in the investigation of
factors related to context complexity and its effect on student teacher
The instrument to measure...
The numerical analysis of thermal convection in porous media,
heated from below, and assuming Darcy flow conditions, involves the
solving of a set of non-linear equations for the temperature and flow
fields. The condition of criticality determining the onset of convection
is obtained by linearization and the solving of an...