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Articles 23551 - 23580 of 24564
Full-Text Articles in Physical Sciences and Mathematics
Some Genetic Characteristics Of Three Walleye Stocks In Iowa And The Impact Of Fry Stockings In The Cedar River, Vaughn L. Paragamian
Some Genetic Characteristics Of Three Walleye Stocks In Iowa And The Impact Of Fry Stockings In The Cedar River, Vaughn L. Paragamian
Journal of the Iowa Academy of Science: JIAS
Fry stockings of walleye Stizostedion v. vitreum into the Cedar River, Iowa began in the early 1950's, and two studies of the success of these plants gave conflicting results. The objectives of my study were to identify some genetic characteristics in three stocks of walleye and to utilize these characteristics to assess the genetic impact of fry stockings in the Cedar River. Electrophoretic analysis of malate dehydrogenase (MDH) and isocitrate dehydrogenase (IDH) was completed for walleye stocks from the Mississippi and Cedar Rivers, and Big Spirit Lake, Iowa. Phenotypic frequencies of Mdh - B2 and Mdh - B3 …
Ua66/8/2 Report, Wku Center For Cave & Karst Studies
Ua66/8/2 Report, Wku Center For Cave & Karst Studies
WKU Archives Records
Report regarding history and activities of the WKU Center for Cave & Karst Studies from 1976 to 1987.
Ua35/11 Wku Student Honors Research Bulletin, Wku University Honors Program
Ua35/11 Wku Student Honors Research Bulletin, Wku University Honors Program
WKU Archives Records
The Western Kentucky University Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers represent work done by students from throughout the university.
- Kesselring, Marcia. Attitudes Toward the Need for Computer Literacy
- Tuck, Janna & Karen Wiggins. Methylation and Confirmation of PGE
- Lewis, Gloria. John Donne's Attitude Toward Love
- Johnson, Linda. International Telecommunications Trade with Japan
- Sharpe, Greg. Precipitation Patterns in Bowling Green, Kentucky, 1980-1985
- Smith, Sandy. Religion and the Media: Alliance or War?
- Bell, Suzanne. Early Secret Involvement of the United States Military in Cambodia
- Scariot, Linda. Parental Divorce and Childhood Emotional Disturbances
- Daniel, Janice. …
The Taxonomy And Biology Of Strauzia (Diptera: Tephritidae), W. Bryan Stoltzfus
The Taxonomy And Biology Of Strauzia (Diptera: Tephritidae), W. Bryan Stoltzfus
Journal of the Iowa Academy of Science: JIAS
The North American genus Strauzia is revised. Five new species are included with keys to adults of the 12 known species. Host plant, important larval characteristics, and life cycle information are given for 11 of the species. The evolution of the genus is discussed and 14 host plants are reported. All species bore in the stems of Asteraceae, pupariate in the crown area or in the soil, and are univoltine.
Editorial Board & Iowa Academy Of Science Officers And Directors
Editorial Board & Iowa Academy Of Science Officers And Directors
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Index For Volume 95
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Annual Report Of The Iowa Academy Of Science, 1987-88, James G. Macmillan
Annual Report Of The Iowa Academy Of Science, 1987-88, James G. Macmillan
Journal of the Iowa Academy of Science: JIAS
Since 1975 when a history of the Iowa Academy of Science was written for the centennial of the founding of the Academy, an Annual Report has acted as a continuing record of the Academy’s activities.
This report encompasses the year beginning July I, 1987 to June 30, 1988 and is based on minutes of committee meetings, Board minutes and recollections of the author. Each part represents a major activity of the Academy.
Cover - Table Of Contents
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Biotechnology: Impact On Iowa's Agricultural Economy, Dwight T. Thomas
Biotechnology: Impact On Iowa's Agricultural Economy, Dwight T. Thomas
Journal of the Iowa Academy of Science: JIAS
Agriculture has always been an important cornerstone of Iowa's economy. The highly publicized difficulties in the agricultural economy in Iowa have highlighted both the importance of agriculture and pitfalls when agriculture is hit by adverse conditions. Iowa's agriculture and agricultural infrastructure have a heritage characterized by the development of very efficient production technology and the early use of innovative ideas. The early adoption of hybrid corn is but one example of the acceptance new technology. Today more than ever before there is a need for improved profitability and for the possibility of diversification of agricultural products in Iowa.
The following …
Dr. James G. Macmillan, Executive Director, Iowa Academy Of Science, 1983-1988
Dr. James G. Macmillan, Executive Director, Iowa Academy Of Science, 1983-1988
Journal of the Iowa Academy of Science: JIAS
The officers and Board of Directors of the Iowa Academy of Science dedicate this issue of the Journal of the Iowa Academy of Science to Jim Macmillan in recognition of his five years of exemplary leadership. During this period, Jim's managerial expertise has served the Academy well and membership has grown significantly. Under Jim's guidance the Academy has improved its financial base through sound fiscal policies, and important steps have been taken in the area of computerized record keeping and data management.
Benthic Macroinvertebrate Habitat Associations Of The Channelized Middle Missouri River, James B. Barnum, Roger W. Bachmann
Benthic Macroinvertebrate Habitat Associations Of The Channelized Middle Missouri River, James B. Barnum, Roger W. Bachmann
Journal of the Iowa Academy of Science: JIAS
Benthic macroinvertebrates associated with navigation structures (dikes, dike pools, revetted banks) and abandoned channels on the Missouri River at the Iowa-Nebraska border were sampled in June, August, and October 1983 to determine the invertebrate community structure of these habitats. Invertebrate densities were greatest in the abandoned channel habitat (to over 13,000/m2), while diversities were greatest in the dike and revetment habitats. Greater habitat diversity contributed to greater organism diversity in the dike and revetment habitats while sediment homogeneity and stability presumably contributed to greater organism densities in the abandoned channel habitat. Dike pools had turbulent eddy currents, which …
Cover - Table Of Contents
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet
Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
A New Name For A Continuing Publication, Marilyn D. Bachmann, Roger W. Bachmann
A New Name For A Continuing Publication, Marilyn D. Bachmann, Roger W. Bachmann
Journal of the Iowa Academy of Science: JIAS
With this issue, the former Proceedings of the Iowa Academy of Science becomes The Journal of the Iowa Academy of Science, a change which coincides with the l00th annual meeting of the Academy. This concludes a process started in 1971 when the Proceedings became a quarterly periodical which also included papers that had not been presented at the previous annual meeting.
An Interpretative History Of The Proceedings Of The Iowa Academy Of Science, Don C. Norton
An Interpretative History Of The Proceedings Of The Iowa Academy Of Science, Don C. Norton
Journal of the Iowa Academy of Science: JIAS
The Proceedings of the Iowa Academy of Science was first published in 1887 and has continued yearly except for 1905. Business reports and contributed papers constituted most of the volumes. Publication of symposia has become more popular in recent years. Financial and mechanical problems have caused strains at rimes, but these have largely been solved after publication became independent of the State Printer.
Catalogue Of The Living Collection Of The Iowa State University Botany Department Greenhouses, Richard W. Pohl, Deborah Q. Lewis
Catalogue Of The Living Collection Of The Iowa State University Botany Department Greenhouses, Richard W. Pohl, Deborah Q. Lewis
Journal of the Iowa Academy of Science: JIAS
The Botany Department greenhouses at Iowa State University are a rooftop facility including 17 separate houses, divided into three temperature zones. Some illuminated houses are provided to encourage good plant growth during the winter. One greenhouse is operated as a short-day facility and provided with curtained chambers for short days. Summer cooling of the greenhouses is effected by evaporative coolers.
The living teaching and research collections include over 800 plane taxa, ranging from bryophytes to orchids and composites. Propagation materials, as available, may be provided to other educational institutions for teaching or research.
Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet
Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet
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.
Solvent Effects In Room Temperature Phosphorescence, Shane J. Helsenbeck, Catherine Haustein
Solvent Effects In Room Temperature Phosphorescence, Shane J. Helsenbeck, Catherine Haustein
Journal of the Iowa Academy of Science: JIAS
Room temperature phosphorescence (R TP) analysis is a technique in which solutions containing organic phosphors are applied to filter paper and dried in the absence of oxygen. Adsorption to the paper inhibits molecular vibrations and promotes phosphorescence. Although the solvent must be removed by volatilization before phosphorescence can occur, it appears that the nature of the solvent affects the intensity of the resulting phosphorescence. We examined the room temperature phosphorescence of p-aminobenzoic acid which had been dissolved in water, organic solvents, or mixtures of water and organic solvents. It was found that solvent volatility had little correlation with RTP intensity …
A Vascular Flora Of The Swaledale Railroad Prairie In North Central Iowa, Thomas L. Eddy
A Vascular Flora Of The Swaledale Railroad Prairie In North Central Iowa, Thomas L. Eddy
Journal of the Iowa Academy of Science: JIAS
"Railroad prairies" are remnant native grasslands that grow along railroad right-of-ways. The Swaledale railroad prairie, which is in north central Iowa, occurs along the Chicago and Northwestern Railroad Company right-of-way in Cerro Gordo County.
The railroad right-of-way and an abandoned sand pit, which lies adjacent to the railroad embankment, harbor a collection of tallgrass prairie remnants. The sand pit supplied earthen fill which was used to elevate the original railroad embankment, circa 1887. It is noteworthy that the method of excavation for fill material helped to preserve earthen knolls that are covered with original tallgrass prairie.
Plant collections were acquired …
Using Life History And Ecology As Tools To Manage A Threatened Salamander Species, Scott R. Mcwilliams, Marilyn D. Bachmann
Using Life History And Ecology As Tools To Manage A Threatened Salamander Species, Scott R. Mcwilliams, Marilyn D. Bachmann
Journal of the Iowa Academy of Science: JIAS
Selected aspects of the life history and ecology of the small-mouthed salamander (Ambystoma texanum Matthes) relevant to the management of this threatened species in Iowa are presented. The population studied utilizes flooded woodland habitat during courtship, breeding and egg laying, and during the entire larval period. Larval foraging strategies in this habitat included ontogenetic but no diel shifts in prey selection. Synchronous, nocturnal breeding migration allowed effective use of drift fences fur capture of adults used in captive breeding, courtship behavior studies, and the estimation of breeding population size. Large numbers of spennatophores, apparently indiscriminate mate choice, and the relatively …
Seasonal Composition Of Benthic Diatom Associations In The Cedar River Basin (Iowa), Stephen P. Main
Seasonal Composition Of Benthic Diatom Associations In The Cedar River Basin (Iowa), Stephen P. Main
Journal of the Iowa Academy of Science: JIAS
This is the first detailed report on the taxonomy and ecology of diatoms in the portion of the upper reaches of the Cedar River basin in Iowa. This paper describes the diatom taxa from shallow benthic substrata collected quarterly between 11 October 1975 and 19 February 1977 at 14 sampling stations. Just over 500 frustules were counted from each of the 216 samples obtained. Analysis of water samples collected at the same time as the diatoms indicates these screams have alkaline hard waters rich in nutrients with extreme turbidity level fluctuation at irregular intervals.
The 281 diatom taxa identified represented …
Editorial Board & Iowa Academy Of Science Officers And Directors
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.
The Status Of Three Uncommon Salamanders (Amphibia: Caudata) In Iowa, Jeffery D. Camper
The Status Of Three Uncommon Salamanders (Amphibia: Caudata) In Iowa, Jeffery D. Camper
Journal of the Iowa Academy of Science: JIAS
The smallmouth salamander [Ambystoma texanum (Matthes)], blue-spotted salamander (Ambystoma laterale Hallowell), and central newt [Notophthalmus viridescens louisianensis (Wolterstorff)] were studied in Iowa from fall 1982 through summer 1984. All three species have declined in abundance in Iowa. A. texanum is more abundant and widespread than was previously suspected, but is declining due to habitat destruction. Apparently, only two populations of A. laterale remain in Iowa. N. v. louisianensis has also declined due to habitat destruction, with only three populations known. All three species require ponds in or adjacent to forest. A. ta was found primarily in riparian …