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Creator:: Stevenson, Franklin Dee
Resource Type:: Dissertation
Full Text:: Committee Dean of Graduate School Date thesis is presented 72ly' / Typed by Bernice D. Wirowek Grace

Creator:: Hansmann, Eugene W. (Eugene William), 1933-
Abstract:: The purpose of this study was to investigate the effects of logging on the productivity, structure and biomass of a periphyton community developed in mountain streams. The three streams used in this investigation were located in the coast range of Lincoln County, Oregon. They were selected for similarity of habitat,...
Resource Type:: Dissertation
Full Text:: coastal streams AN ABSTRACT OF THE THESIS OF EUGENE WILLIAM HANSMANN for the Ph. D. (Name) (Degree

Creator:: Vajrala, Neeraja
Abstract:: Iron is absolutely necessary for the maintenance, the defense, the differentiation and last, but by no means least, the growth and cellular division of almost all living organisms including Nitrosomonas europaea, an ammonia oxidizing bacterium. Given the necessity of iron, it is not surprising that N. europaea evolved several irondependent...
Resource Type:: Dissertation

Creator:: Hanson, Paul E.
Abstract:: The genus Ormyrus has a worldwide distribution and comprises about sixty recognized species. The higher taxonomic relationships of the genus are uncertain, as evidenced by its placement in the families Ormyridae, Pteromalidae, or Torymidae. Here, the genus is described in detail and a preliminary catalog of the world species is...
Resource Type:: Dissertation
Full Text:: Ormyrus 22 D. Species groups of Ormyrus 28 CHAPTER 4. REVISION OF THE NEARCTIC SPECIES OF ORMYRUS 31 A

Creator:: Dean, Milton Lee
Abstract:: A biosystematic investigation was undertaken in 15 species and three subspecies of the genus Aster, in western North America. Previous studies had been based entirely on external morphological features, and it was believed that much could be learned about the natural affinities of the taxa by exploring their cytological and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Milton Lee Dean for the Ph. D

Creator:: Chorzempa, Mary André, Sister
Abstract:: Chemical dosimetry developed in response to needs created by developments in the field of high-energy radiation. Shortly after the discovery of X-rays in 1895 and of radioactivity in 1896, the deleterious effects of ionizing radiation were recognized. To guard against the injurious effects of radiation in medical application, dose-measuring methods...
Resource Type:: Dissertation
Full Text:: Charlottenburg, Dr. D. E. Sehrwald from Freiburg, and by Dr. H. D. Hawks at Columbia Uni- versity in New York

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