Thesis (M.S.)--Wisconsin. / Includes bibliographical references (leaves 86-89).

Thesis (M.S.)--Ohio State University, 1984. / Includes bibliographical references (leaves 129-130). Available online via OhioLINK's ETD Center

Thesis (M.S.)--Ohio State University, 1981. / Includes bibliographical references (leaves 81-84). Available online via OhioLINK's ETD Center

Thesis (M.S.)--Ohio State University, 1985. / Includes bibliographical references (leaves 151-153). Available online via OhioLINK's ETD Center

No description available.

A recent development in drift-control for agricultural ground sprayers is the installation of a hood (or shroud) over the boom. Hoods are designed to provide a protected zone in which droplets can be sprayed and deposited on the target with limited interference from the wind. This study compared chemical drift using hooded and open-boom pesticide sprayers in various configurations. The hooded sprayer included an air-foil mounted on top of the hood, designed to re-direct the airflow and further decrease drift. The principal objective was to test the performance of the hood, the air-foil, and nozzle size in reducing drift. A fluorescent dye and water solution was sprayed adjacent to a series of parallel string collectors. The amount of drifting material was determined by rinsing the string and testing the fluorescence of the rinsewater. Wind speed and direction, temperature, and relative humidity were monitored during each field test so that the influence of weather conditions on drift could be assessed. Statistical and graphical comparisons were based on the development of a regression model to describe downwind drift for each sprayer configuration under a set of variable weather conditions. Only parameters found to be important to drift were included in the final model. These parameters included sprayer configuration, wind speed, temperature, and the interactions of configuration with wind speed and temperature. Results of the comparisons indicated that for a larger droplet spectrum, the hood reduced drift significantly, while for smaller droplets the hood was ineffective. The air-foil was found to have no influence on drift. / Graduation date: 1991

This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

Thesis (M.S.) -- Worcester Polytechnic Institute. / Keywords: emissive probes; electrospray; colloid thrusters; plasma potential. Includes bibliographical references (p. 111-113 ).

Thesis (M.S.)--Ohio State University. / Includes bibliographical references (leaves 63-65). Available online via OhioLINK's ETD Center

This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.