A formal total synthesis of the macrolactone pyrolizidine alkaloid (-)-integerrimine (2), from R-(+)-citronellal (93) is described. Aldehyde 93 was converted to exo methylene derivative 94 which was reduced to allylic alcohol 95. The epoxides 96 and 98, obtained in a ratio of 3:1 respectively by Sharp less epoxidation of 95...
This study compared the parental attitudes of mothers under 35 years
of age, who are having their first child, called primigravidas, with the
parental attitudes of mothers 35 years old and older, called mature primigravidas, who are having their first child.
Historically, most women in America had to choose between...
Measurement of physical and chemical solute transport properties of a soil/waste system is necessary to predict pollutant migration in soils. The adsorption component of solute transport is most often determined in the laboratory by performing column studies and batch equilibrium tests. Both of these methods suffer from disadvantages. Batch equilibrium...
A continuous flow, gas-permeable-membrane-supported (GPMS) biofilm
reactor was developed to facilitate the treatment of polychlorinated
biphenyls (PCBs). The GPMS biofilm reactor consisted of a cylindrical
glass vessel made up of three compartments: the gas, liquid and
headspace compartments. A gas-permeable membrane separated the bottom
gas compartment from the liquid compartment....
The objectives of this study were to: (1) determine if individual
differences in the learner characteristics of field dependence, state
and trait anxiety, age, sex, and prior computer experience were related
to performance in operating a computer system; (2) to determine if
differences in performance would occur as a result...
Geophysical surveys in the Gulf of California provided
the data to construct contour maps of bathymetry, free-air
anomalies and total field magnetic anomalies for the area
north of 27° N. Major faults such as the Ballenas-
Salsipuedes, Tiburón, Guaymas, and the South Cerro Prieto
are clearly observable on these maps....
The Garnet Range-Bearmouth area of western Montana was the
depositional site for basinal, platform slope, shelf, and
peritidal Mississippian carbonate rocks. The following
stratigraphic units, listed in ascending order, are recognized:
the Paine Limestone, Middle Canyon Formation, Mission Canyon
Limestone, and McKenzie Canyon Limestone of the Tendoy Group; the
Kibbey...
The vegetation of a 420 square mile area of the
Oregon Coastal Mountain Range was mapped using data from
the multispectral scanner system aboard Landsat.
Advantages of this mapping system include rapid synoptic
coverage of the same geographic area at different
periods in time at a reduced cost compared to...
This research investigated the effect of a literature-based unit on subjects' in primary grades attitudes toward the elderly and aging. The experiment followed a pretest/posttest design; covariates derived from three separate survey portions were compared with respective postmeasure scores.
Other research on young children's attitudes toward aging suggests that ageist...