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Filtering by: Date 1968 Date issued sim 1968-03-28 Degree Name Doctor of Philosophy (Ph.D.)

Mechanisms of orientation in the leaf-cutter bee Megachile rotundata (Fabricius)

Creator:

Osgood, Charles Edgar

Abstract:

The leaf- cutter bee Megachile rotundata (Fabricius) is an important alfalfa pollinator in western North America. This study was designed to provide information on methods of orientation used by M. rotundata in order to make recommendations regarding the parameters within which adult nesting populations may be relocated. Preliminary studies suggest...

Resource Type:

Dissertation
The purification and characterization of a ribonuclease from bovine aorta

Creator:

Lewis, Roger Allen

Abstract:

Reports of investigations on nucleases in arterial tissue are few in number. The present study is concerned with the purification and characterization of an aortic ribonuclease. An endonuclease (ARNase I) isolated from the bovine aorta has been purified 4611 fold by means of fractionation with ethanol, acid extraction, isoionic precipitation,...

Resource Type:

Dissertation