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- Iowa Academy of Science--Periodicals; Science--Iowa--Periodicals; (4)
- Aryl cation (1)
- Aryl ether (1)
- Benzenediazonium salts (1)
- Bivalvia (1)
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- Erosion (1)
- Freshwater mussels (1)
- Gender Differences (1)
- Gender Issues (1)
- Gully bank phosphorus losses (1)
- Gully bank soil losses (1)
- High school curriculum (1)
- Loafing areas (1)
- Mathematics (1)
- Missouri River (1)
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- Riparian pasture management (1)
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- Science (1)
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- Soil phosphorus (1)
- Stream bank phosphorus losses (1)
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Articles 1 - 15 of 15
Full-Text Articles in Science and Mathematics Education
Counting Girls In - Gender Issues In Science And Mathematics: An Examination Of The Research Concerning Innate And Socio-Cultural Gender Differences In The Fields Of Science And Mathematics In An Effort To Promote More Female Participation, Valerie R. Mackin
Pell Scholars and Senior Theses
In today's world, there is an increasing demand for people in the technological fields. Fewer females than males pursue careers in physical sciences, engineering, and computer science in the United States presenting a loss of needed mathematicians and scientists. Gender differences related to mathematics and science is a complex arena of study, involving both innate biological differences combined with socially constructed ideas about gender in society. Through an in-depth investigation from educational, cognitive, and social psychology perspectives one will be able to determine how innate and socio-cultural factors contribute to the shortage of needed mathematicians and scientists in the United …
Iowa Academy Of Science: The New Bulletin, V05n3, Autumn 2009, Iowa Academy Of Science
Iowa Academy Of Science: The New Bulletin, V05n3, Autumn 2009, Iowa Academy Of Science
New Bulletin
Inside This Issue:
--Message from the Executive Director
--Lois Hattery Tiffany
--Norman Borlaug
--Iowa Science Teaching Section Fall Conference
--2009 IAS Speaker Series at the Saylorville Visitor Center
--Announcements, Events & Deadlines
--IAS Corporate Memberships
--New REAP Plates Coming Soon
--GLOBE Database
--Membership Update
Iowa Academy Of Science: The New Bulletin, V05n2, Summer 2009, Iowa Academy Of Science
Iowa Academy Of Science: The New Bulletin, V05n2, Summer 2009, Iowa Academy Of Science
New Bulletin
Inside This Issue:
--Message from the Executive Director
--IJAS Students Speak with NASA Scientists
--Geological Society of Iowa Field Trips
--Announcements, Events & Deadlines
--2009 IJAS Annual Meeting Winners
--2009 IAS Speaker Series at the Saylorville Visitor Center
--Remembering Dr. Thomas Huston Macbride
--Iowa Science Teaching Section Fall Conference
--Project WET
Iowa Academy Of Science: The New Bulletin, V05n1, Spring 2009, Iowa Academy Of Science
Iowa Academy Of Science: The New Bulletin, V05n1, Spring 2009, Iowa Academy Of Science
New Bulletin
Inside This Issue:
--Message from the Executive Director
--Corrections
--Keep in touch with the IAS Members Only Website
--Lakeside Laboratory Reunion is looking for Alumni
--The Iowa Academy of Science welcomes new Institutional Member
--Candidates for President-Elect
--Candidates for Board of Directors
--Election 2009
--Iowa Science Teachers’ Section Election Candidates
--2008 Donations
Iowa Academy Of Science: The New Bulletin, V05n4, Winter 2009, Iowa Academy Of Science
Iowa Academy Of Science: The New Bulletin, V05n4, Winter 2009, Iowa Academy Of Science
New Bulletin
Inside This Issue:
--Message from the Executive Director
--President's Message: Each One, Reach One
--122nd Annual Meeting
--Images from the 2009 ISTS Fall Conference
--Excellence in Science Teaching Awards (ESTA)
--Distinguished Science Awards
--IJAS Silent Auction
--Announcements, Events & Deadlines
--IAS Corporate Memberships
Gully And Stream Bank Erosion In Three Pastures With Different Management In Southeast Iowa, George N. Zaimes, Richard C. Schultz, Mustafa Tufekcioglu
Gully And Stream Bank Erosion In Three Pastures With Different Management In Southeast Iowa, George N. Zaimes, Richard C. Schultz, Mustafa Tufekcioglu
Journal of the Iowa Academy of Science: JIAS
Gully and stream banks can be major sources of sediment and nutrients to surface waters, both major water quality problems in the United States. Sediment may also carry phosphorus to surface waters, the primary limiting nutrient causing eutrophication. Overgrazing can induce gully and stream bank erosion by reducing vegetation cover that weakens bank soil resistance to stream water flow. This study examines stream and gully bank erosion adjacent to continuous (CP), rotational (RP) and intensive rotational (IP) pastures, grazed by beef cattle in southeast Iowa. Stream and gully bank erosion were measured by: a) surveying the extent of the severely …
Dr. Lois Hattery Tiffany (1924-2009): In Memoriam, Deborah Q. Lewis
Dr. Lois Hattery Tiffany (1924-2009): In Memoriam, Deborah Q. Lewis
Journal of the Iowa Academy of Science: JIAS
Dr. Lois Hartery Tiffany, Distinguished Professor Emerita, Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, Iowa, died on 6 September 2009. Dr. Tiffany was an outstanding mycologist and teacher. Held in high regard by the public as "Iowa's Mushroom Lady" and known by many students, colleagues and friends as "Dr. T.," she was the matriarch of the Botany Department (now the Department of Ecology, Evolution and Organismal Biology) at Iowa State.
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.
Som Loss And Soil Quality In The Clear Creek, Ia, A. N. Thanos Papanicolaou, Christopher G. Wilson, Ozan Abaci, Mohamed Elhakeem, Mary Skopec
Som Loss And Soil Quality In The Clear Creek, Ia, A. N. Thanos Papanicolaou, Christopher G. Wilson, Ozan Abaci, Mohamed Elhakeem, Mary Skopec
Journal of the Iowa Academy of Science: JIAS
The Clear Creek, IA Experimental Watershed (CCEW), which drains to the Iowa River, experiences severe surface erosion due to a combination of high slopes, erodible soils, and extensive agriculture. Concurrent with soil loss is the removal of Soil Organic Matter (SOM). High values of SOM have been related to soil quality; therefore, excessive SOM loss corresponds to degrading soil health. Soil quality assessments are important tools for evaluating management practices in agricultural systems; however, it is difficult to measure soil quality directly at the watershed scale because it varies with a number of site-specific soil characteristics. The coupling of soil …
Aryl Ethers From Arenediazonium Tetrafluoroborate Salts: From Neat Reactions To Solvent-Mediated Effects, James A. Shriver, Daniel P. Flaherty, Cameron C. Herr
Aryl Ethers From Arenediazonium Tetrafluoroborate Salts: From Neat Reactions To Solvent-Mediated Effects, James A. Shriver, Daniel P. Flaherty, Cameron C. Herr
Journal of the Iowa Academy of Science: JIAS
A general procedure for the synthesis of various aryl ethers via the thermal decomposition of benzenediazonium tetrafluoroborate salts is described. Studies performed in neat alcohol at 60°C gave aryl ethers in yields ranging from 0-73%. Upon completion of a series of reactions, the effect of solvent was explored to expand the scope and relevance of this procedure. It was found that even solvents that are traditionally non-nucleophilic gave rise to products including bi-aryls and N-aryl acetamides. The utilization of an ionic liquid, l-butyl-4-methylpyridinium tetrafluoroborate, resulted in yields comparable to reactions performed in neat alcoholic solvents.
Table Of Contents (Back Cover)
Table Of Contents (Back Cover)
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
The Freshwater Mussels (Mollusca: Bivalvia: Unionidae) Of The Channelized Missouri River, Ellet Hoke
The Freshwater Mussels (Mollusca: Bivalvia: Unionidae) Of The Channelized Missouri River, Ellet Hoke
Journal of the Iowa Academy of Science: JIAS
The lower Missouri River has historically been viewed as a fauna! barrier for unionids due to high sediment load. However this survey of the lower (channelized) Missouri River documented the presence of 14 unionid species and the exotic Corbicula fluminea (Muller, 1774). Unionids are present in stable substrates sheltered from the effects of the river's strong currents. Analysis of early literature on the Missouri River suggests reports of an absence of unionids were not based upon thorough fieldwork, and the most commonly cited rationale for their reported absence, the high sediment load in the river, is not convincing. Pre-1938 unionid …
Enhancing Iowa High School Students' Transition To College, K. E. Lassila, L. C. Rule, C. Lee, R. J. Driggs, G. Fulton, M. Skarda, J. Torres Y Torres
Enhancing Iowa High School Students' Transition To College, K. E. Lassila, L. C. Rule, C. Lee, R. J. Driggs, G. Fulton, M. Skarda, J. Torres Y Torres
Journal of the Iowa Academy of Science: JIAS
We present our studies of the transitions of Iowa science students from high school to post-secondary colleges. Our report summarizes information and impressions from dealing with thousands of new students arriving at our six colleges, along with meetings and discussions with high school science teachers to add their viewpoints into our considerations. Feedback from community college, four year college, and high school science teachers highlighted the following five study issues and needs for improving student transitions from high school to college science: 1) Better math preparation is needed; 2) More work with inquiry-based learning rather than with facts and memorization …