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Journal of the Iowa Academy of Science: JIAS

No abstract provided.

The Pleistocene Glacial Record At Two Quarries In Decatur County, Iowa, Keith E. Schilling, Robert A. Stewart

Journal of the Iowa Academy of Science: JIAS

The Pleistocene stratigraphy and sedimentology of two quarry exposures near Grand River and Decatur City in Decatur County, Iowa document a sequence of Pleistocene sediments overlying striated Pennsylvanian limestone which represent at least two pre-Illinoian glacial advances into the ancestral Grand River valley. Two pre-Illinoian diarnictons separated by a clast pavement were observed at the Decatur City quarry; a single diarnicton was present at the Grand River quarry. At both quarries, the diarnictons exhibit comparable lithologic properties and are genetically interpreted as basal tills. The pre-Illinoian tills are tentatively correlated with the Alburnett Formation in eastern Iowa, primarily on the …

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Mass Selection For Adaptation In Antigua Maize (Zea Mays L.) Composite, F. M. San Vicente, A. R. Hallauer

Journal of the Iowa Academy of Science: JIAS

Tropical maize (Zea mays L.) germplasm has had limited use in temperate areas because of photoperiod sensitivity. Antigua germplasm from the island Antigua was introduced co Iowa because of its resistance to important pests of maize and its heterosis exposed m crosses with ocher tropical varieties. Mass selection procedures were used to adapt the Antigua Composite germplasm co Iowa conditions. After. Six cycles of mass selection for earlier silk emergence, the selected Antigua Composite flowered 17 days earlier than the original composite. Grain yield and ocher agronomic traits of the adapted scram of Antigua were similar co chose of adapted …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Evaluation Of Passive Integrated Transponders As A Marking Technique For Turkey Poults, Dewaine H. Jackson, William H. Bunger

Journal of the Iowa Academy of Science: JIAS

Injectable, passive integrated transponders (PITs) were evaluated as a marking technique for newly hatched wild turkey (Meleagris gallopavo Linnaeus) poults. Seven of 12, 3-day-old domestic turkey poults received a PIT implant and a wing tag. A control group of five poults received only a wing tag. Two subcutaneous implant sites were evaluated, along the right side of the neck and in the area between the right inner thigh and breast. One of7 PITs failed or was expelled during the first week. Four scanning errors, in which the PIT was present yet not detected during the initial scanning attempt, occurred in …

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Competitive Abilities Of Oat And Barley Varieties, B. D. Mcbratney, K. J. Frey

Journal of the Iowa Academy of Science: JIAS

Competitive ability of a plant genotype reflects its capacity to yield well and compete successfully for light, moisture, and nutrients when grown with similar or dissimilar genotypes. This trait is important to plant breeding because most breeding populations are propagated in mixed or competitive stands. The objective of this study was to assess the competitive abilities of oat and barley genotypes.

Two sets of oat and barley genotypes were evaluated for competitive ability. Set I consisted of five oat varieties, and Set II consisted of two barley and three oat varieties. Neither set, when averaged, showed over- or under-compensation with …

The Early History And Recent Trends In Iowa Herpetology, Reeve M. Bailey, James L. Christiansen

Journal of the Iowa Academy of Science: JIAS

Herpetological exploration of Iowa began in 1823 with Long's expedition to the Rocky Mountains. From that time until an 1892 publication by Osborn based on Iowa specimens, herpetological research in the state was minor and incidental. Several significant reports appeared after that date involving analysis of Iowa specimens and from 1938 to 1944 a major base-line collection of the amphibians and reptiles of Iowa was established. Studies after that time have added a few species to Iowa’s known herpetofauna but recently have concentrated not only on composition of the fauna and distribution, but emphasized population changes, ecological relationships, and better …

Some Significant Iowa Plant Records From The Herbarium Of University Of Nebraska At Omaha, Barbara L. Wilson

Journal of the Iowa Academy of Science: JIAS

Though the herbarium of University of Nebraska at Omaha (OMA) lies outside the state boundaries, it contains a number of interesting western Iowa records. Publicizing these and other little-known Iowa plant records is especially important at this time, since a checklist of Iowa's vascular plants, compiled by Eilers and Roosa, is nearing completion.

Index For Volume 100

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Editorial Board

Basic Communication Course Annual

No abstract provided.

Contents

Basic Communication Course Annual

No abstract provided.

The Impact Of Perceived Research And Teaching Competence On The Credibility Of A Basic Course Director: A Case Study, Pamela L. Gray, Martin G. Murray, Nancy L. Buerkel-Rothfuss

Basic Communication Course Annual

1992 Award Winning Paper in Basic Course Research

This case study provides an initial inquiry into graduate teaching assistants' (GTA) perceived credibility of a basic course director (BCD), specifically isolating their perception of the teaching and research competence of the BCD. The results indicate that the perceived credibility may be tied to both teaching and research competence, appears to be extremely important to the GTAs, and implies that low credibility would have many unpleasant effects on the staff, their teaching and the graduate program as a whole. This case study points to the need for more research to identify variables …

Teaching Ethics In Introductory Public Speaking: Review And Proposal, Jon A. Hess

Basic Communication Course Annual

Ethics are not heavily emphasized in either public speaking textbooks or classroom lectures. This de-emphasis of public speaking ethics is unfortunate. Educators should take responsibility for making sure that students are familiar with ethical issues and that they know that unethical public communication is not acceptable. Since public speaking textbooks do not provide much explicit guidance for ethical decision making, supplementary material is provided in this article. Four ethical principles are provided to help students understand the nature of communication ethics, a sample class lecture is outlined, and teaching ideas are included.

The Status Of The Introductory And Advanced Interpersonal Communication Courses At U.S. Colleges And Universities: A National Survey, Rod Troester, Drew Mcgukin

Basic Communication Course Annual

Interpersonal communication has become a significant area of instruction and research. This national survey clarifies the status of the introductory and advanced courses a U.S. colleges and universities by examining materials employed, and course texts and contents. Results are presented for each course and are compared to an earlier study of interpersonal communication courses by Berryman and Weaver (1970).

Basic Communication Course Annual Vol. 5

Basic Communication Course Annual

Full issue (279 pages, 12.582 MB)

The American University In Bulgaria: Institution-Building In A Developing Democracy, Edward B. Laverty, Roberta P. Laverty

Maine Policy Review

Edward and Roberta Laverty describe the new American University in Bulgaria (AUBG) that opened in September 1991. This is the first private educational institution opened in Bulgaria since World War II, and because of its affiliation with the University of Maine, it becasme the only fully accredited university in Eastern Europe..