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Social and Behavioral Sciences Commons™
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Articles 31 - 39 of 39
Full-Text Articles in Social and Behavioral Sciences
Mutant Weeds Of Iowa: S-Triazine-Resistant Plastids Chenopodium Album L., Jack Dekker, Ronald Burmester
Mutant Weeds Of Iowa: S-Triazine-Resistant Plastids Chenopodium Album L., Jack Dekker, Ronald Burmester
Journal of the Iowa Academy of Science: JIAS
S-triazine resistance in common lambsquarters (Chenopodium album L.) has been reported previously but not in Iowa. A study was conducted using a chlorophyll a fluorescence assay to confirm the presence of resistance in C. album populations in Iowa. Variable chlorophyll a fluorescence assays confirmed that mutations conferring resistance exist in five (5) geographically separated populations of C. album in Iowa: relatively greater fluorescence yields were measured in untreated resistant tissue compared with untreated susceptible plants, relatively greater fluorescence yield in treated compared with untreated susceptible leaf disks; and similar fluorescence yields of treated and untreated resistant tissue. This is the …
Cover - Table Of Contents
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Ada Hayden: A Tribute, Duane Isely
Ada Hayden: A Tribute, Duane Isely
Journal of the Iowa Academy of Science: JIAS
Dr. Ada Hayden was a member of the Iowa State College of Botany faculty, 1920-1950. Her floristic studies of the lake region in northern Iowa are possibly the most authoritative for any part of the state. Hayden was curator of the Iowa State herbarium, 1934-1950, and contributed immeasurably to its development. This research facility has recently been named the Ada Hayden Herbarium. In the sense that L. H. Pammel was father of the Iowa State park system, her bequest is the state preserves. After some 25 years as a conservation activist, she published descriptions of 22 prairie areas in ten …
Ecology Of Iowa Drosophila Ii. Lowland Forest And Sand Prairie, Neil J. Jennings, Robert D. Seager
Ecology Of Iowa Drosophila Ii. Lowland Forest And Sand Prairie, Neil J. Jennings, Robert D. Seager
Journal of the Iowa Academy of Science: JIAS
The seasonal abundances of Drosophila species collected from a lowland forest community and from a sand prairie community in northeastern Iowa are compared. With some important exceptions, the patterns seen in the lowland forest community were similar to what had been observed in a previous collection (Jennings et al. 1985). Fewer species and many fewer individuals were collected from the sand prairie community, although in general the patterns seen were similar to those of the lowland forest community. Strong evidence of microhabitat differentiation was seen in both communities. In contrast to our previous study, none of the seasonal abundance patterns …
Cover - Table Of Contents
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
A Survey Of Influences On Nonsmoking Behavior Among Traditional Age College Students, Arthur Mark Stelken
A Survey Of Influences On Nonsmoking Behavior Among Traditional Age College Students, Arthur Mark Stelken
Dissertations and Theses @ UNI
This study was designed to describe the influence of selected factors on nonsmoking behavior among traditional age college students. Specifically, eight potential sources of influence were examined: family, peer, media, admired role model, health, physician, education, and aesthetic factors. A questionnaire was designed and delivered to students in general education Personal Wellness classes at the University of Northern Iowa. Subjects (N=169) were asked to identify the degree to which various factors influenced their decision not to smoke cigarettes including: smoking/nonsmoking behavior by others, and specific selected factors. In addition, the subjects ranked the top-five influences from one (1) to five …
Trait Competitiveness Of Starters And Non-Starters In N.C.A.A. Division I Basketball, Curtis Harold Gunnink
Trait Competitiveness Of Starters And Non-Starters In N.C.A.A. Division I Basketball, Curtis Harold Gunnink
Dissertations and Theses @ UNI
The purpose of this study was to examine trait competitiveness in N.C.A.A. Division I male basketball players to determine if a significant difference could be found between starters and non-starters. It was hypothesized that players that usually start (starters) a game will have higher trait competitiveness scores than players that usually do not start (non-starters) a game.
The design of this research project was quasi-experimental. The independent variable was whether the subject was a starter or a nonstarter on a N.C.A.A. Division I basketball team. The dependent variable was trait competitiveness as measured by the Sport Orientation Questionnaire (SOQ) (Gill …