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2004

Life Sciences

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Articles 31 - 60 of 120

Full-Text Articles in Education

Trich Regulations Update, Clell Bagley Apr 2004

Trich Regulations Update, Clell Bagley

All Current Publications

Fact sheet highlighting an update on trich regulations for bulls.


Manure Storage, Process Improvement For Animal Feeding Operations, John Harrison, Dallen Smith Apr 2004

Manure Storage, Process Improvement For Animal Feeding Operations, John Harrison, Dallen Smith

All Current Publications

The objective of this fact sheet is to help producers understand the need for manure storage facilities.


Types Of Manure Storage, John Harrison, Dallen Smith Apr 2004

Types Of Manure Storage, John Harrison, Dallen Smith

All Current Publications

The objective of this fact sheet is to help producers understand the characteristics of different types of manure storage facilities. Factors that might influence the selection of a particular type of manure storage facility are discussed. Manure storage facilities discussed include solid systems, slurry systems, and liquid (lagoon systems).


Animal Manure Removal Methods For Manure Storage Facilities, John Harrison, Dallen Smith Apr 2004

Animal Manure Removal Methods For Manure Storage Facilities, John Harrison, Dallen Smith

All Current Publications

A well-designed manure storage facility must also be well managed to prevent environmental concerns from developing. Probably the single most important requirement in operating and maintaining a manure storage facility is to ensure that the facility does not overflow or discharge.


Hexapod Herald -- Volume 16, Number 2, March 2004 Mar 2004

Hexapod Herald -- Volume 16, Number 2, March 2004

Hexapod Herald & Other Entomology Department Newsletters

Content: Calendar of Events -- Welcome -- Congratulations -- Meeting News -- Publications -- Grant -- Faculty News -- Travel -- Graduate Student News -- Sigma Xi Student Research Poster, Competition, April 21, 2004 -- From the Office -- Central States Entomological Society


Lagoon Monitoring And Condition Parameters, John Harrison, Dallen Smith Mar 2004

Lagoon Monitoring And Condition Parameters, John Harrison, Dallen Smith

All Current Publications

Lagoons combine storage and treatment functions and thus are more sensitive to management inputs than are solid or slurry facilities. The establishment and maintenance of desirable microbiological populations in lagoons requires more specific procedures in the way lagoons are loaded and monitored.


The Effect On Digestibility And Production Of Protein And Energy Supplementation Of Stocker Cattle On Intensively-Managed Grass Flood-Meadow Pastures, Dale Zobell, Ken Olson, Randall Wiedmeier, C. A. Stonecipher Feb 2004

The Effect On Digestibility And Production Of Protein And Energy Supplementation Of Stocker Cattle On Intensively-Managed Grass Flood-Meadow Pastures, Dale Zobell, Ken Olson, Randall Wiedmeier, C. A. Stonecipher

All Current Publications

No abstract provided.


Processed Corn Silage Effects On Digestibility And Production Of Growing Beef Replacement Heifers, Dale Zobell, Ken Olson, Randall Wiedmeier Feb 2004

Processed Corn Silage Effects On Digestibility And Production Of Growing Beef Replacement Heifers, Dale Zobell, Ken Olson, Randall Wiedmeier

All Current Publications

Forage is generally the principle feedstuff in feedlot diets for growing cattle and, as such, its nutritive value will determine weight gain, feed intake and feed efficiency. In feedlot diets for growing cattle, corn silage can constitute up to 60% of the diet (DMB).


Electronic Manual, John Harrison, Dallen Smith Feb 2004

Electronic Manual, John Harrison, Dallen Smith

All Current Publications

Developing a reasonable and reliable Agriculture Environmental Management System (AEMS) includes a number of situations that require documentation (Harrison, 2002). However, to convince a regulatory inspector that an operation is complying with its legal and regulatory aspects, an operator may be required to submit additional documentation.


Graduate School Of Biomedical Sciences Catalog 2004-2006, Graduate School Of Biomedical Sciences Jan 2004

Graduate School Of Biomedical Sciences Catalog 2004-2006, Graduate School Of Biomedical Sciences

Catalogs

No abstract provided.


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 ...


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 ...


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 ...


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.


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 2004

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Plant Parasitic Fungi Of Ten Tallgrass Prairies Of Iowa: Distribution And Prevalence, Lois H. Tiffany, George Knaphus Jan 2004

Plant Parasitic Fungi Of Ten Tallgrass Prairies Of Iowa: Distribution And Prevalence, Lois H. Tiffany, George Knaphus

Journal of the Iowa Academy of Science: JIAS

During the 1980s and 1990s, collections of fungal parasites on above ground parts of prairie plants in Iowa were made throughout the growing seasons. This report presents the fungi recorded from three groups of Iowa tallgrass prairies. The western group was composed of Dinesen, Steele and Stinson Prairie State Preserves, a Loess Hills group of collecting sites in Five Ridge and Runkel Prairie State Preserves and prairies at Waubonsie State Park. 180 species of fungi were collected on 116 hosts from these prairies. A central Iowa group of prairies associated with the Des Moines Lobe landform, Anderson, Doolittle, Kalsow and ...


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 ...


Front Matter Jan 2004

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


A Comparison Of Drinking Water Contamination In Buried Slab Wells, Other Large-Diameter Wells, And Drilled Wells, Rita M. Gergely Jan 2004

A Comparison Of Drinking Water Contamination In Buried Slab Wells, Other Large-Diameter Wells, And Drilled Wells, Rita M. Gergely

Journal of the Iowa Academy of Science: JIAS

This study presents the results of a statewide water well survey conducted by the Iowa Department of Public Health from 1993 to 1995 to determine whether there were statistically significant differences between well water contamination in buried slab wells, other large-diameter wells, and drilled wells. Wells were sampled for total coliform bacteria, fecal coliform bacteria, nitrate, and atrazine. Staff collected water samples and completed a site survey at each well, which included an interview with the occupant or owner and actual observations of the wellhead and surrounding area.

The study included 293 buried slab wells, 287 other large-diameter wells, and ...


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 ...


Flow Cytometry Used To Assess Genetic Damage In Frogs From Farm Ponds, Bartholomew L. Bly, Melinda G. Knutson, Mark B. Sandheinrich, Brian R. Gray, Dean A. Jobe Jan 2004

Flow Cytometry Used To Assess Genetic Damage In Frogs From Farm Ponds, Bartholomew L. Bly, Melinda G. Knutson, Mark B. Sandheinrich, Brian R. Gray, Dean A. Jobe

Journal of the Iowa Academy of Science: JIAS

Flow cytometry (FC) is a laboratory method used to detect genetic damage induced by environmental contaminants and other stressors in animals, including amphibians. We tested FC methods on three species of ranid frogs collected from farm ponds and natural wetlands in southeastern Minnesota. We compared FC metrics for Rana clamitans between ponds with direct exposure to agricultural contaminants and reference (unexposed) ponds. Concentrations of atrazine in water from our farm ponds ranged from 0.04 to 0.55 ppb. We found that R. clamitans from exposed ponds had DNA content similar to frogs from unexposed ponds. Pond-averaged C-values (a measure ...


Index For The Journal Of The Iowa Academy Of Science Volume 111 Jan 2004

Index For The Journal Of The Iowa Academy Of Science Volume 111

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Back Cover Jan 2004

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 2004

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Biomass Yield Stability In Alfalfa, Joseph G. Robins, Heathcliffe Riday, Sara J. Helland, E. Charles Brummer Jan 2004

Biomass Yield Stability In Alfalfa, Joseph G. Robins, Heathcliffe Riday, Sara J. Helland, E. Charles Brummer

Journal of the Iowa Academy of Science: JIAS

In addition to biomass production, alfalfa (Medicago sativa) cultivars also need to express yield stability across diverse environments. The objective of this experiment was to analyze the nature of biomass yield stability in ten commercial alfalfa cultivars by evaluating performance of individual genotypes. Biomass yield was measured in each of five environments across two years, and the yield stability computed for the overall cultivar mean performance and the mean performance of each of the genotypes comprising the cultivars using the genotype x environment variance statistic of Shukla and the superiority statistic of Lin and Binns'. The GxE variance of the ...


Back Cover Jan 2004

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Cover - Table Of Contents Jan 2004

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Rosenzweig's Messianic Aesthetics, Jules Simon Jan 2004

Rosenzweig's Messianic Aesthetics, Jules Simon

Jules Simon

No abstract provided.


Friends Of Red Rock Canyon Quarterly Meeting, Public Lands Institute Jan 2004

Friends Of Red Rock Canyon Quarterly Meeting, Public Lands Institute

Presentations (PLI)

The Public Lands Institute is dedicated to strengthening the national fabric that is essential for the protection, conservation, and management of public lands.