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The Natural History Of Aconitum Noveboracense Gray (Northern Monkshood), A Federally Threatened Species, Margaret A. Kuchenreuther

Journal of the Iowa Academy of Science: JIAS

Aconitum noveboracense Gray (Ranunculaceae), commonly known as northern monkshood, is a federally threatened herbaceous perennial that occurs in disjunct populations in Iowa, Wisconsin, Ohio and New York. It appears to be a glacial relict, existing today only in unique areas with cool, moist microenvironments, such as algific talus slopes. Field studies reveal that A. noveboracense has a complex life history. Perennation of individual plants occurs through the annual production of daughter tubers. Vegetative reproduction is commonly observed, and can occur by means of aerial and subterranean bulbils, as well as by development of adventitious root buds. Populations also reproduce sexually …

Awards And Recognition, Iowa Academy Of Science, 1996

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

The Tacit Dimension Of Organizational Learning, Thomas Reeder Robinson

Engineering Management & Systems Engineering Theses & Dissertations

This research was conducted to observe the self-reflections of an organizational participant group to further understand the organizational learning phenomenon. The participant group consisted of the 15 managers, spanning three levels of management, of a large engineering group in the southeastern United States.

The intent of the research was to generate theory, rather than to test theory. To accomplish this objective, a qualitative research methodology in a participatory action framework was modeled from Keating's (1993) Organizational Learning Process (OLP) to co-construct participants' organizational reflections. The methodology included individual interviews designed to elicit spontaneity that co-generated organizational perspectives. These perspectives were …

Creating Bicultural Identities: The Role Of School-Based Bilingual Paraprofessionals In Ontemporary Immigrant Accommodation (Two Kansas Case Studies), Edmund T. Hamann

Department of Teaching, Learning, and Teacher Education: Faculty Publications

This study locates the professional and informal practices of school-based bilingual paraprofessionals (paras) in the context of the larger social phenomenon of acculturation, cultural brokerage, and identity construction. It demonstrates how the paras in two Kansas communities transform an assimilationist mandate into something quite different, the promotion of bicultural identities, as part of a process called “additive biculturalism.” Additive biculturalism incorporates Weiss’s characterization of paras as cultural brokers (1994), but expands upon it significantly. As the first part of additive biculturalism, bilingual paras model and promote bicultural identities among the English-Learner students and parents they work with. As the second …

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Gender Patterns In Science Course Enrollment And Course Drop Patterns In An Iowa Senior High School, Sandra L. Stephen, Elizabeth D. Riesz

Journal of the Iowa Academy of Science: JIAS

In order to ascertain whether local patterns corresponded to the national trends, which show fewer female and minority students enrolling in and completing high school physical science courses, the Cedar Rapids Community School District studied the course enrollment and drop patterns of seniors in one of the District high schools. Male students predominated in physics and AP Chemistry, and the proportion of males in AP Physics was significantly greater than the proportion of females. The proportion of females in chemistry was significantly greater than their proportion in the senior class. Course dropping patterns revealed a statistically significant relationship between gender …

Sibyl 1995, Otterbein University

Otterbein University Yearbooks

No abstract provided.

Survey Of Hematozoa And Intestinal Helminths Infecting Green-Winged Teal In Guthrie County, Iowa, Rick Klann, Bryan Hellyer

Journal of the Iowa Academy of Science: JIAS

Five helminths and one sporozoan were recovered from 21 hunter-killed green-winged teal collected from Lakin Slough in Guthrie County, Iowa during October and November of 1991. The sporozoan, Leucocytozoon simondi, was identified in blood smears from all 21 teal. The helminths recovered from the alimentary tract included three trematodes, Cotylurus flabelliformis, Echinostoma trivolvis and Zygocotyle lunata; a hymenolepid tapeworm; and one acanthocephalan, Corynosoma constrictum. The ecological factors associated with infection by these parasites are discussed.

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Annual Report Of The Iowa Academy Of Science, 1994-95, Paul E. Rider

Journal of the Iowa Academy of Science: JIAS

Since 1976, annual reports have served as a continuing record of the activities of the Iowa Academy of Science and an archive for its history. These augment the 100 year IAS history written in the centennial year of 1975.

This report covers the period from July 1, 1994 to June 30, 1995. It is based on the official records of the Academy (committee reports, Board minutes, correspondence) as well as the recollections, impressions and thoughts of the author.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Paleokarst And Associated Mineralization At The Linwood Mine, Scott County Iowa, Paul L. Garvin

Journal of the Iowa Academy of Science: JIAS

Operations at the Linwood Mine in Scott County, Iowa, have exposed, on two working levels, extensive pre-Pennsylvanian paleokarst and associated sediment fillings and mineralization in Middle Devonian limestones. Cavities in Davenport-Spring Grove host rocks range up to 270 meters in length and are virtually all filled with fluviatile sediment. Cavities in Cedar Rapids host rocks, on average, are smaller and some are unfilled. Limestone dissolution was controlled by high-angle fractures with a wide variety of orientations and by bedding plane and stylolitic partings. Dissolutional features on both levels of the mine provide evidence for phreatic and vadose processes. Most of …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Inheritance And Number Of Genes Affecting Quantitative Traits Within F2 Maize Populations, D. H. Schmidt, A. R. Hallauer

Journal of the Iowa Academy of Science: JIAS

Populations derived from crosses of elite genotypes are commonly used in plant breeding programs. Knowledge of the genetic variation among individuals and their progenies within F2 populations is essential for effective selection of important traits. The genetic variation and number of effective factors affecting the expression of quantitative traits within 30 F2 maize (Zea mays L.) populations were determined by different methods suggested for study of F2 populations. Estimates of heritability and number of effective factors varied among F2 populations for each trait, primarily because of the differences in trait expression between parents of crosses and the environmental effects upon …

Hydrogeology Of The Devonian-Silurian Carbonate Aquifer, Northern Cedar Rapids, Iowa, Keith E. Schilling

Journal of the Iowa Academy of Science: JIAS

The hydrogeology of the Devonian-Silurian carbonate aquifer was investigated at a hazardous waste site in northern Cedar Rapids, Iowa. Data collected at the project site included bedrock cores, specific capacity measurements in discrete packer intervals and monitoring wells, hydraulic-head measurements and groundwater samples collected from select Devonian and Silurian wells.

Bringing The Schoolhouse To Life: Methodologies Of Living History Education Demonstrated In A Living History Program For San Timoteo Schoolhouse, Riverside County, California, Mark L. Shanks

Theses Digitization Project

This project begins by examining living history, defining its scope, uses, and relationship to other fields. It further defines and articulates a second-person methodology for construction of living history educational projects, grounding it in historical, educational, and dramatic theory.

Selective Recovery Of Β-Galactosidase With Charged Fusion Tails Using Ion-Exchange Membranes, Erika A. Thiem, Meng H. Heng

Journal of the Iowa Academy of Science: JIAS

We explored the feasibility of attaching charged tails to a target protein, in this case β-galactosidase, for selective recovery. In this process, an ion-exchange membrane was used for selective binding and release of β-galactosidase with the attached purification fusions. Strength of binding and purity of eluate increased with increasing tail length. In addition, activity yield was improved with the implementation of an intermediate partial elution recycle procedure.

Research Papers By 1992 And 1993 Interns In The Program For Women In Science And Engineering At Iowa State University, Mary Ann Evans, Krishna S. Athreya

Journal of the Iowa Academy of Science: JIAS

The papers in this volume offer a sampling of the outstanding work of high school and undergraduate interns who participated in the 1992 and 1993 Program for Women in Science and Engineering (PWSE) summer internship programs. From synthesis of materials to developing effective methods of hazardous waste disposal, from nondestructive structural studies at the macroscopic level to microstructural analyses of materials, from testing precision of sensors used as aids in agriculture to isolating effects of specific parameters on plant growth, to name a few, these papers span a wide range of scientific methods and disciplines. They serve as testimony to …

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Sibyl 1994, Otterbein University

Otterbein University Yearbooks

No abstract provided.

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Effects Of Competition And Predation On Prothonotary Warblers And House Wrens Nesting In Eastern Iowa, Timothy Brush

Journal of the Iowa Academy of Science: JIAS

In a fragmented midwestern floodplain forest, a small Prothonotary Warbler (Protonotaria citrea) population experienced high competition with House Wrens (Troglodytes aedon) and mammalian nest predation in 1988-89. Despite the provision of 3 types of nest boxes and higher water levels, Prothonotary Warblers did not nest successfully and decreased in the fragmented forest in 1990-91. House Wrens used >90% of the nest boxes in both years. Wren territories doubled within the nestbox area, while remaining constant on an unmanipulated area. In contrast, a larger warbler population had high nesting success during 1990-91 in a relatively unfragmented, wetter forest tract. Such forests, …

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Use Of Ion Exchange Membranes For Selective Recovery Of Aspergillus Awamori Glucoamylase And Phage T4 Lysozyme, Deborah K. Stafslein, Jeff M. Hunter, Craig E. Forney

Journal of the Iowa Academy of Science: JIAS

Our research examined whether enhanced separation and purification of mutant enzymes could be obtained on ion-exchange membranes. Solutions of three mutants of Aspergillus awamori glucoamylase were passed through an anionic exchange membrane, as well as one mutant of T4 lysozyme through a cationic exchange membrane. The mutant enzymes were modified by adding "charged fusions'', polypeptides of either aspartic acid residues to increase the overall negative charge of the enzyme or arginine residues to increase the overall positive charge. The effect of the mutations on the purification of glucoamylase from a "modified" fermentation broth were examined at two different elution pHs, …

Age And Developmental History Of Iowa Fens, C. A. Thompson, E. A. Bettis Iii

Journal of the Iowa Academy of Science: JIAS

Iowa fens are small, mineorotrophic peatlands maintained by shallow groundwater. Eighteen fen sites located across northern Iowa were mapped and radiocarbon dated to assess the timing of initial peat accumulation. The radiocarbon ages span the Holocene, ranging from 1,240 to 10,900 B.P.; however most fens postdate 5,000 yr B.P. The dominance of late-Holocene ages suggests that Holocene climatic change may have strongly influenced the record of peat accumulation. During the mid-Holocene Iowa was warmer and drier than at present, and peat was degraded or accumulated slowly in fens. The range of ages also implies that the commencement and subsequent rate …