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Editorial Board & Iowa Academy Of Science Officers And Directors

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.

Characterization Of Aminoisobutyric Acid Transport Systems In Mcf-8, A Line Of Malignant Mouse Mammary Epithelial Cells, Bruce A. Voyles

Journal of the Iowa Academy of Science: JIAS

Uptake of α-aminoisobutyric acid (AIB) by MCF-8, a line of malignant mouse mammary epithelial cells derived from a D2 hyperplastic nodule outgrowth, was found to be mediated by two different transport systems. In actively dividing cells about 60% of total AIB uptake is mediated by an A-like system: transport was Na+ -dependent, was inhibited by N-methyl-AIB, was maximal at pH 7.5 and ceased at pH 6. Transport by this system was reduced by nearly 65% when cell division ceased in confluent cultures, but the addition of insulin and/or calf serum to the medium of quiescent cells restored activity. Transport by …

Editorial Board & Iowa Academy Of Science Officers And Directors

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.

A Non-Gall Forming Eurosta Solidaginis (Diptera: Tephritidae), W. Bryan Stoltzfus

Journal of the Iowa Academy of Science: JIAS

Eurosta Jolidaginis (Fitch) can parasitize Solidago canadensis without forming a gall. This non-gall former apparently escapes most of the parasitism and predation of the gall forming fly. Levels of host-plane infestation by non-gall formers may approach the frequency of gall formation.

Effects Of Intensive Training On Prolactin Responses To Submaximal Exercise In Males, A. C. Hackney, R. L. Sharp, W. S. Runyan, R. J. Ness

Journal of the Iowa Academy of Science: JIAS

The purpose of this study was to determine if serum prolactin responses to submaximal exercise were affected by 8 weeks of intensive training (5 cl/wk, 90 min/d 65-200% V0₂max). Nine males performed 90 minute continuous exercise bouts (cycle ergometry; 65% V0₂ max) at the end of 1, 4, and 8 weeks of training. Blood samples were obtained pre-training, and pre-, post-exercise. Significant differences were not seen in pre- and post-exercise prolactin levels at weeks 1 and 4. However, at week 8 the post-exercise prolatin was significantly greater than the pre-exercise levels (6.8 ± 0.9 vs 3.8 ± …

Release And Behavior Of Recombinant Bacteria In Field Studies, Steven E. Lindow

Journal of the Iowa Academy of Science: JIAS

Numerous opportunities exist for the utilization of genetically engineered microorganisms for useful purposes in agriculture and in waste management. An extremely diverse array of microorganisms is likely to be considered for such processes as biological control of plant pests, degradation of to toxic wastes, reclamation of rare metals and other processes. For some purposes, such as in the degradation of toxic materials, it may be possible to make biologically compromised microorganisms that will exist only in the presence of the toxic chemicals that they were designed to transform. A better understanding of the genetics, biology and physiology of microorgansims which …

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Pollen Fertility And Agronomic Performance Of Sorghum Hybrids With Different Male-Sterility-Inducing Cytoplasms, R. E. Secrist, R. E. Atkins

Journal of the Iowa Academy of Science: JIAS

Effects of three sources of male-sterility-inducing cytoplasm in sorghum [Sorghum bicolor (L.) Moench] were compared in crosses with 217 male parents. Hybrids of these parents and A2 Redbine 58', 'A3 Combine Kafir 60', and 'A4 Martin' female parents were evaluated for percentage stained pollen, seed set of bagged panicles, plant height, and days to midbloom. Additionally, hybrids of 12 of the inbreds crossed to each female parent were evaluated for grain yield and other agronomic traits in comparison with hybrids in A1 male-sterility-inducing cytoplasm.

Twenty-one inbreds restored pollen fertility to hybrids with A2 cytoplasm, 11 restored pollen fertility to …

Index For Volume 96

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Science Notes - U.S. Geological Survey Teacher's Packets, Stephanie A. Althof

Iowa Science Teachers Journal

The United States Geological Survey has compiled two packets of teaching aids which vary according to purpose and grade level. One, "Teacher's Packet of Geologic Materials," is available to secondary teachers of earth science (for whom the contents were selected) and to college teachers of geology. Another packet, "Selected Packet of Geologic Teaching Aids," was compiled for elementary and secondary teachers of geography, social studies, general science, environmental education and oceanography.

Science Notes - Gary E. Downs And Karen L. Murphy Receive Iowa Science Teachers Section Awards

Iowa Science Teachers Journal

Gary E. Downs and Karen L. Murphy were recently presented with Iowa Science Teachers Section Outstanding Service Awards for 1989. Both award recipients were honored at the ISTS Fall Conference and School Science and Mathematics Association Annual Convention in Des Moines.

Science Notes - Census Education Project Developed By Department Of Commerce, Stephanie A. Althof

Iowa Science Teachers Journal

The United States Department of Commerce (through the Bureau of the Census) has been distributing materials for the "1990 Census Education Project."

Science Notes - Brochure On "Careers In Animal Behavior" Offered, Stephanie A. Althof

Iowa Science Teachers Journal

The Education Committee of the Animal Behavior Society has produced a brochure titled "Careers in Animal Behavior."

What Does A Can Of Soft Drink Weigh On Other Planets?, D. Louis Finsand, Thomas Campbell

Iowa Science Teachers Journal

The activity explained in this article was developed at the Harvard-Smithsonian Center for Astrophysics by the authors for SPICA Activities. SPICA is the acronym for the Support Program for Instructional Competency in Astronomy and is funded by the National Science Foundation. Thirty-three astronomy and science educators were selected from throughout the United States to be involved in the three-week SPICA astronomy education workshop during August 1989.

Science Notes - Lantz Summer Awards For Graduate Study In The Sciences

Iowa Science Teachers Journal

The College of Natural Sciences of the University of Northern Iowa has announced the availability of financial awards to pay tuition costs of graduate study in the fields of biology, chemistry, earth science, physics, general science and science education during the 1990 Summer Session.

Science Calendar

Iowa Science Teachers Journal

No abstract provided.

The Iowa Science Teachers Fall Conference And School Science And Mathematics Association Annual Convention, 1989, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Map ... 3
Speakers: Sam Rhine, Bill Aldridge, Bonnie Litwiller ... 4
Sessions ... 7
Application for Membership ... Centerfold
Registration Forms ... Centerfold

Iowa Academy Of Science Directory, 1989-90: Officers, Committees, And Membership Roster, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Board of Directors ... 5
Program Directors ... 6
Editors ... 7
Committees ... 9
Sections ... 24
Awards of Merit ... 29
Excellence in Science Teaching Awards ... 31
Past Presidents ... 33
Membership Roster ... 34
Constitution and Bylaws ... 50

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 …

Nesting Of Raptors Uncommon In Iowa: Summary And New Records, Dean M. Roosa, Jon Stravers

Journal of the Iowa Academy of Science: JIAS

The nesting status of the Turkey Vulture, Bald Eagle, Northern Harrier, Sharp-shinned Hawk, Cooper's Hawk, Red-shouldered Hawk, Broad-winged Hawk, Swainson's Hawk, Peregrine Falcon, Common Barn-Owl, Burrowing Owl, Long-eared Owl and Short-eared Owl is reviewed and previously unpublished records added. Also the potential for the Northern Saw-whet Owl and Osprey to nest in Iowa is discussed. Although several species are on the brink of extirpation as part of Iowa's nesting avifauna, the Bald Eagle has returned as a regular nester. Over 100 previously unpublished nesting reports and some management recommendations are included.

Hybrid Performance Of Sorghum Parental Lines Developed By Mass Selection And S1 Yield Testing, K. R. Ess, R. E. Atkins

Journal of the Iowa Academy of Science: JIAS

Experiments were conducted co obtain information on the effects of two methods of developing parental lines from a random-mating population of sorghum (Sorghum bicolor L. Moench) on hybrid performance. Gridded mass selection for threshed panicle weight was used in developing IAP1R(M)C3: and a sister population, IAP4R(S1)C3, was advanced each cycle on the basis of grain yield of S₁ families in replicated yield trials. Hybrids with male parents developed by mass selection did not differ significantly for grain yield and panicles/plant from those with parents chosen on the basis of S₁ yield tests. The S₁-selection hybrids …

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 …

The Scientist's Role In The Controversy Over Genetic Engineering, Regulation And Utilization Of Microorganisms: A Symposium Presented At The L00th Annual Meeting Of The Iowa Academy Of Science, Iowa State University, Ames, Iowa April 21-23, 1988: Introduction, Arthur K. Weissinger

Journal of the Iowa Academy of Science: JIAS

The introduction of technologies for the direct genetic manipulation or alteration of organisms offers tremendous promise of improved agronomic prosperity through the enhancement of existing agricultural systems and through development of alternative products and methods. These technologies also pose philosophical, socioeconomic, and environmental questions. A number of these questions were considered at the bioethics symposium that was held here at Iowa State last November, the purpose of which was to examine the social, ethical, regulatory, and legal issues associated with the application of cell culture, molecular biology, and other so-called biotechnologies to agriculture.

Public Policy On The Introduction Of Genetically Engineered Microorganisms, Anne K. Vidaver

Journal of the Iowa Academy of Science: JIAS

This presentation raises questions of research needs and issues. Underlying assumptions are that only beneficial or useful microorganisms will be "released"; that extensive laboratory and contained experiments will have been done prior to introduction and live microorganisms can be confined within the areas of introduction. Evidence to support these assertions will be presented. Critical needs for progress in this area include: 1) Recognition that the nature of the product introduced into the environment is of primary significance, not how the organism was genetically altered or modified. 2) Recognition that microorganisms are introduced into the environment as part of our daily …

Editorial Board & Iowa Academy Of Science Officers And Directors

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.

Perfil Quali-Quantitativo Dos Currículos Do Ensino Secundário Brasileiro No Século Xix [A Quali-Quantitative Profile Of The Curricula Of The Brazilian Secondary School Of The Xix Century], Karl M. Lorenz, Ariclê Vechia

Education Faculty Publications

O trabalho caracteriza a organização e os conteúdos dos currículos adotados na escola secundária brasileira de 1838 a 1900, tomando como referência o Colégio Pedro II. O estudo classifica as disciplinas em quatro conjuntos curriculares: Humanidades, Ciências, Matemáticas e Estudos Sociais. Analise, quantitativamente, as disciplinas dos conjuntos curriculares, sua frequência e distribuição nas series, e a carga horaria atribuída elas.

The paper describes the organization and contents of the curricula adopted in the Brazilian secondary school for the years 1838 to 1900, using as its reference the College Pedro II. The study classifies the curricular disciplines in four groups: Humanities, …

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 …