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Articles 961 - 990 of 1948

Full-Text Articles in Science and Mathematics Education

Cover - Table Of Contents Jan 2004

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Front Matter Jan 2004

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


The Freshwater Mussels (Mollusca: Bivalvia: Unionidae) Of The Boone River, North Central Iowa, Ellet Hoke Jan 2004

The Freshwater Mussels (Mollusca: Bivalvia: Unionidae) Of The Boone River, North Central Iowa, Ellet Hoke

Journal of the Iowa Academy of Science: JIAS

A survey of the freshwater mussels of the Boone River conducted in September 1982 documented a fauna consisting of seventeen then extant or relict species. Analysis of museum records yielded one additional species unrecovered since 1937. Subsequent to the 1982 study, additional surveys were conducted in the region in 1984-1985 and 1998-1999 as a part of two statewide surveys. A comparison of the results of the three studies suggests a significant decline in the unionid fauna in the Boone River since 1982. While it is almost certain that a real decline in the fauna has occurred, the extent of this …


Cover - Table Of Contents Jan 2004

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


The Impact Of White Pine (Pinus Strobus) On A Mollisol After Seven Decades Of Soil Development, Irina Kovda, Eric C. Brevik, Thomas E. Fenton, Maria Gerasimova Jan 2004

The Impact Of White Pine (Pinus Strobus) On A Mollisol After Seven Decades Of Soil Development, Irina Kovda, Eric C. Brevik, Thomas E. Fenton, Maria Gerasimova

Journal of the Iowa Academy of Science: JIAS

Selected chemical, physical, and macro and micromorphological properties in two pedons of a Clarion soil (Fine-loamy, mixed, superactive, mesic Typic Hapludolls) formed in till parent material, one planted to white pines (Pinus strobus) for the past 75 years and the other to grass, were compared. The most obvious difference between the two was the increased biological activity under pines; the variety and quantity of excrements suggested the activity of soil microfauna and variability of species resulted in finer and better aggregation of biological origin (crumbs and granules), numerous excrements in voids, and higher total porosity under pines. The matrix was …


The Southwestern Association Of Parasitologists: The First 35 Years: 1967–2002, Donald W. Duszynski Jan 2004

The Southwestern Association Of Parasitologists: The First 35 Years: 1967–2002, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

First two paragraphs:

It is likely that the idea to organize southwestern parasitologists into a regional group originated over cocktails one night in the late 1950s during a regional or national meeting. What is clear is that two men—Drs. Robert E. Kuntz and Donald V. Moore— were instrumental in turning the idea into what has become, in reality, the Southwestern Association of Parasitologists (SWAP).

Dr. J. Teague Self (personal communication, 1981) stated, “The beginning of SWAP was an idea of Robert Kuntz who felt that something could be gained if several of us here in the southwest could get together …


Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Quarterly Progress Report, Period Ending September 30, 2004, Margaret N. Rees Jan 2004

Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Quarterly Progress Report, Period Ending September 30, 2004, Margaret N. Rees

Oliver Ranch Project

Assist in project coordination between numerous stakeholders such as the Clark County School System, Desert Research Institute, Community College of Southern Nevada, UNR Cooperative Extension, Nevada State College, local museums, state parks, non-profit organizations, federal agencies, and the public to ensure appropriate educational curricular activities and venues are provided for in the conceptual design of the School and the Wild Horse and Burro facility where appropriate as well as assist in the NEPA process as needed. The activities will be conducted at least in part by university faculty, staff and students as part of the university’s research, teaching, and service …


Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Quarterly Progress Report, Period Ending June 30, 2004, Margaret N. Rees Jan 2004

Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Quarterly Progress Report, Period Ending June 30, 2004, Margaret N. Rees

Oliver Ranch Project

Assist in project coordination between numerous stakeholders such as the Clark County School System, Desert Research Institute, Community College of Southern Nevada, UNR Cooperative Extension, Nevada State College, local museums, state parks, non-profit organizations, federal agencies, and the public to ensure appropriate educational curricular activities and venues are provided for in the conceptual design of the School and the Wild Horse and Burro facility where appropriate as well as assist in the NEPA process as needed. The activities will be conducted at least in part by university faculty, staff and students as part of the university’s research, teaching, and service …


Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Quarterly Progress Report, Period Ending December 31, 2004, Margaret N. Rees Jan 2004

Oliver Ranch Science School Complex & Wild Horse And Burro Facility: Quarterly Progress Report, Period Ending December 31, 2004, Margaret N. Rees

Oliver Ranch Project

Assist in project coordination between numerous stakeholders such as the Clark County School System, Desert Research Institute, Community College of Southern Nevada, UNR Cooperative Extension, Nevada State College, local museums, state parks, non-profit organizations, federal agencies, and the public to ensure appropriate educational curricular activities and venues are provided for in the conceptual design of the School and the Wild Horse and Burro facility where appropriate as well as assist in the NEPA process as needed. The activities will be conducted at least in part by university faculty, staff and students as part of the university’s research, teaching, and service …


Hexapod Herald - Vol. 15, No. 5, October 2003 Oct 2003

Hexapod Herald - Vol. 15, No. 5, October 2003

Hexapod Herald and Other Entomology Department Newsletters

Welcome

Congratulations

Faculty news

Publications

Museum news

Fond farewells

Grants

Graduate student news

From the office


Hexapod Herald - Vol. 15, No. 4, September 2003 Sep 2003

Hexapod Herald - Vol. 15, No. 4, September 2003

Hexapod Herald and Other Entomology Department Newsletters

Congratulations

Welcome

Farewell

Faculty news

Graduate student news

From the office

Grants

Museum news

Publications

Travel

Condolences

This and that


Hexapod Herald - Vol. 15, No. 3, June 2003 Jun 2003

Hexapod Herald - Vol. 15, No. 3, June 2003

Hexapod Herald and Other Entomology Department Newsletters

Congratulations

Welcome

Graduate student news

From the office

Grants

Publications

Travel

Condolences


Bumble Boosters: Students Doing Real Science, Douglas A. Golick, Diana M. Schlesselman, Marion D. Ellis, David W. Brooks Jun 2003

Bumble Boosters: Students Doing Real Science, Douglas A. Golick, Diana M. Schlesselman, Marion D. Ellis, David W. Brooks

Department of Entomology: Faculty Publications

Bumble Boosters was a lottery grant funded cooperative project between the University of Nebraska- Lincoln, Department of Entomology, the Lincoln Public Schools, Science Focus Program, and the Lincoln Folsom Children’s Zoo. The primary education goal of the project was to create a community of learners to conduct authentic research on bumble bees in Nebraska. Participants were actively engaged in collecting bumble bees and placing nesting domiciles. Internet technology was employed to facilitate networking between project participants. Systematic evaluation was conducted during and after the project.


115th Session Iowa Academy Of Science Awards Luncheon, April 25, 2003, Iowa Academy Of Science Apr 2003

115th Session Iowa Academy Of Science Awards Luncheon, April 25, 2003, Iowa Academy Of Science

Iowa Academy of Science Documents

Program:

--- Introductions - Raymond Anderson, President
--- Recognition of students participating in various statewide activities - Ernie Schiller, Chair, Student Programs Committee
--- Presentation of scholarship winners and 2004 AJAS representatives - Ernie Schiller, Chair, Student Programs Committee
--- Presentation of Excellence in Science Teaching Awards - Jeff Weld, Director, ESTA Program


Hexapod Herald - Vol. 15, No. 2, April 2003 Apr 2003

Hexapod Herald - Vol. 15, No. 2, April 2003

Hexapod Herald and Other Entomology Department Newsletters

Congratulations

Welcome

Farewell

Faculty news

Graduate student news

From the office

Grants

Museum news

Publications

Travel

Condolences

This and that


Hexapod Herald - Vol. 15, No. 1, February 2003 Feb 2003

Hexapod Herald - Vol. 15, No. 1, February 2003

Hexapod Herald and Other Entomology Department Newsletters

Congratulations

Welcome

Farewell

Facultyn News

Graduate student news

From the office

Grants

Museum news

Publications

Travel

Condolences

This and that


Index For The Journal Of The Iowa Academy Of Science Volume 110 And Change Of Editor Jan 2003

Index For The Journal Of The Iowa Academy Of Science Volume 110 And Change Of Editor

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Checklist Of Instructions For Authors Jan 2003

Checklist Of Instructions For Authors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Awards And Recognition, Iowa Academy Of Science, 2003 Jan 2003

Awards And Recognition, Iowa Academy Of Science, 2003

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 2003

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Iowa Academy Of Science Membership Directory, 2003-2004, Iowa Academy Of Science Jan 2003

Iowa Academy Of Science Membership Directory, 2003-2004, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Editorial Board, Journal ... 4
Committees ... 6
Sections ... 14
ISTS Regional Directors ... 19
Awards of Merit ... 21
Excellence in Science Teaching Awards ... 22
Past Presidents ... 23
Membership Roster ... 24
Institutional Members ... 25
Corporate Sponsors ... 25


Front Matter Jan 2003

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Cover - Table Of Contents Jan 2003

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Restoration And Monitoring Of The River Otter Population In Iowa, J. A. Pitt, W. R. Clark, R. D. Andrews, K. P. Schlarbaum, D. D. Hoffman, S. W. Pitt Jan 2003

Restoration And Monitoring Of The River Otter Population In Iowa, J. A. Pitt, W. R. Clark, R. D. Andrews, K. P. Schlarbaum, D. D. Hoffman, S. W. Pitt

Journal of the Iowa Academy of Science: JIAS

Northern river otters (Lontra canadensis) were widespread in North America at the time of European settlement. However, river otters were extirpated from most of Iowa in the early 1900s due to habitat degradation and unregulated harvest. In 1985, the Iowa Department of Natural Resources began an effort to restore the river otter population throughout the state, including a pilot study of survival to determine if establishment was feasible. Annual survival was estimated to be 86% during the pilot study. River otters dispersed an average of about 11 km from the point of release and exhibited habitat use typical for the …


Occurrence Of Ovotestes And Plasma Vitellogenin In Feral Male Fathead Minnows From Lagoons Of Municipal Wastewater Treatment Facilities In Central Iowa, Robert B. Bringolf, Robert C. Summerfelt Jan 2003

Occurrence Of Ovotestes And Plasma Vitellogenin In Feral Male Fathead Minnows From Lagoons Of Municipal Wastewater Treatment Facilities In Central Iowa, Robert B. Bringolf, Robert C. Summerfelt

Journal of the Iowa Academy of Science: JIAS

Since the early 1990s, endocrine disrupting compounds have been recognized as an important environmental threat. Male fish exposed to effluent from large, metropolitan municipal wastewater treatment facilities (WWTFs) have developed reproductive abnormalities including ovotestes and elevated levels of plasma vitellogenin (Vtg), a plasma protein typically produced by egg-laying females. In the summer of 2000, gonads and plasma Vtg concentrations were examined in feral male fathead minnows (Pimephales promelas) collected from lagoons of 11 small, rural municipal WWTFs and a reference site (a national wildlife refuge) in Iowa. Fathead minnows were captured in traps from five of the 33 lagoons (three …


Cathodoluminescence As A Means For Distinguishing Hydrothermal From Pre-Hydrothermal Quartz In Sulfide-Bearing Mineral Deposits On The Northern Fringe Of The Upper Mississippi Valley Zinc-Lead District, Ne Iowa And Sw Wisconsin, Paul L. Garvin Jan 2003

Cathodoluminescence As A Means For Distinguishing Hydrothermal From Pre-Hydrothermal Quartz In Sulfide-Bearing Mineral Deposits On The Northern Fringe Of The Upper Mississippi Valley Zinc-Lead District, Ne Iowa And Sw Wisconsin, Paul L. Garvin

Journal of the Iowa Academy of Science: JIAS

Sulfide-bearing mineral deposits, located on the northern fringe of the Upper Mississippi Valley Zinc-Lead District, are contained in early Ordovician carbonate rocks that are extensively silicified and dolomitized. Some silica and dolomite appear to be products of the hydrothermal processes that also formed fracture-filling and cavity-lining sulfides and other cogenetic minerals; other silica and dolomite appear to result from low-temperature, pre-hydrothermal regional diagenesis. Distinguishing hydrothermal quartz (jasperoid) from pre-hydrothermal quartz (chert) solely by hand specimen and thin section petrography is difficult because these two types of mineralization are often intimately associated with each other. Polished slabs from several of these …


Salt Tolerance Of Sunflower And Lettuce In Cultivated And Uncultivated Grass Soil, Steven H. Emerman, Emily M. Kinsinger Jan 2003

Salt Tolerance Of Sunflower And Lettuce In Cultivated And Uncultivated Grass Soil, Steven H. Emerman, Emily M. Kinsinger

Journal of the Iowa Academy of Science: JIAS

We tested two hypotheses: 1) whether a vegetable crop will show greater growth under a given salinity treatment in an uncultivated grass soil than a cultivated soil and 2), if so, whether the greater growth is due to the occasional presence of relatively fresh water in macropores or the interaction between salinity and hypoxia in a soil without significant macropores. A previous study suggested uptake from. macropores was significant only for crops with high root water potential (Emerman and Dawson 1997). Hence, in this study, 21 miniature crops were grown in a greenhouse, and the ratio of root dry weight …


A Key To The Eggs And Nests Of Iowa Turtles, James L. Christiansen, Jeffrey R. Parmelee Jan 2003

A Key To The Eggs And Nests Of Iowa Turtles, James L. Christiansen, Jeffrey R. Parmelee

Journal of the Iowa Academy of Science: JIAS

Biologists often need to identify destroyed turtle nests where a predator has excavated and eaten the eggs. We present a dichotomous key to the eggs and nests of Iowa's turtles based on egg or nest morphology and known range of the species. Egg and nest morphology clearly separated most nests of the families Chelydridae and Kinosternidae and many of the Emydidae. However, egg morphology must be combined with known range to distinguish wood turtles (Glyptemys insculpta) from other emydids. These factors will also separate most false map turtles (Graptemys pseudogeographica) from other species. Similarities among egg morphologies, nest morphologies, and …


Submersed Aquatic Vegetation Trends In Impounded And Backwater Habitat Types Of Pool 13, Upper Mississippi River System: 1994-2000, Theresa A. Blackburn, Daniel J. Kirby Jan 2003

Submersed Aquatic Vegetation Trends In Impounded And Backwater Habitat Types Of Pool 13, Upper Mississippi River System: 1994-2000, Theresa A. Blackburn, Daniel J. Kirby

Journal of the Iowa Academy of Science: JIAS

Submersed aquatic vegetation (SAV) was sampled from 1994-2000 at fixed sires along established transects in Pool 13 of the Upper Mississippi River System (UMRS), as part of the Long Term Resource Monitoring Program (LTRMP). These data were used to quantify the annual percent frequency of occurrence and mean relative density of SAV within three backwaters (Brown's Lake, Savanna Bay, and Spring Lake) and the impounded area of Pool 13. This investigation used Spearman rank correlation to assess the strength of bivariate relationships between measurements of SAV abundance and biological, physical, and hydrological variables at fixed water quality monitoring sites within …


The Influence Of Soil Water Content, Calcite Content, And Temperature On Bulk Electrical Conductivity, Eric C. Brevik, Jaehoon Lee, Thomas E. Fenton, Robert Horton Jan 2003

The Influence Of Soil Water Content, Calcite Content, And Temperature On Bulk Electrical Conductivity, Eric C. Brevik, Jaehoon Lee, Thomas E. Fenton, Robert Horton

Journal of the Iowa Academy of Science: JIAS

Electrical conductivity (EC) as measured by the Geonics® EM-38 has shown promise as a soil survey tool. EC is determined by a combination of soluble salts, clay content and mineralogy, water content, and temperature. While investigating use of the EM-38 for soil survey purposes, it is important to understand the relative contribution of each of these variables on EC. A laboratory experiment was set up to determine the relative influence of water content, temperature, and calcite content on EC using time-domain reflectometry (TDR) probes. TDR was used as a proxy for the EM-38 because of the large volume of soil …