Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

1997

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 5101 - 5130 of 6538

Full-Text Articles in Entire DC Network

Resistivity Surveying Uses In Landfill Monitoring, Sonya Schroeder Jan 1997

Resistivity Surveying Uses In Landfill Monitoring, Sonya Schroeder

Honors Capstones

There is always a need for new techniques to use in landfill monitoring. Geophysical surveying encompasses a range of techniques that have potential for use over landfills in detecting landfill geometry and interior characteristics. Three geophysical techniques are gravity surveying, magnetic surveying, and electrical resistivity surveying. Resistivity surveys measure the potential difference between electrodes placed in the ground. The electrodes can be arranged in several different arrays, two of which are the Wenner array and the Schlumberger array.' Resistivity data can then be analyzed using computer modeling software. Two such programs in use for resistivity layered-earth modeling are Veslg and …


Swimming Behavior In The Fox Squirrel, Sciurus Niger (Rodentia: Sciuridae), From Northeastern Arkansas, Stanley E. Trauth, David H. Jamieson Jan 1997

Swimming Behavior In The Fox Squirrel, Sciurus Niger (Rodentia: Sciuridae), From Northeastern Arkansas, Stanley E. Trauth, David H. Jamieson

Journal of the Arkansas Academy of Science

No abstract provided.


Revised Status Of Rare And Endangered Unionaea (Mollusca: Margaritiferidae, Unionidae) In Arkansas, John L. Harris, Peter J. Rust, Alan D. Christian, William R. Posey Ii, Chris L. Davidson, George L. Harp Jan 1997

Revised Status Of Rare And Endangered Unionaea (Mollusca: Margaritiferidae, Unionidae) In Arkansas, John L. Harris, Peter J. Rust, Alan D. Christian, William R. Posey Ii, Chris L. Davidson, George L. Harp

Journal of the Arkansas Academy of Science

Harris and Gordon (1987) reviewed the distribution and status of 18 rare and /or endangered unionacean bivalve species (commonly referred to as clams, mussels, freshwater mussels, naiads) that occur or have occurred in Arkansas. They discussed four species that were federally listed as endangered, four species that were considered endangered or extirpated within Arkansas, four species considered threatened within Arkansas, four species of special concern within Arkansas, and two species for which the conservation status was considered uncertain due to questions regarding taxonomic validity. Numerous unionacean field surveys have been performed during 1986 1996, and a substantial database of new …


Age, Growth And Condition Of Largemouth Bass, Micropterus Salmoides, Of Lake Ashbaugh, Arkansas, Ronald L. Johnson, Rosalyne M. Davis Jan 1997

Age, Growth And Condition Of Largemouth Bass, Micropterus Salmoides, Of Lake Ashbaugh, Arkansas, Ronald L. Johnson, Rosalyne M. Davis

Journal of the Arkansas Academy of Science

The population size structure, length at age and condition of 140 largemouth bass, Micropterus salmoides, were studied for Lake Ashbaugh, Arkansas. Scales and otoliths were used for age and length at age determination of individual bass. Length at age was determined by back-calculation and relative weight was used to measure condition. The Lake Ashbaugh population is dominated by young, slow growing bass in poor condition. Ninety-one percent of the largemouth bass in Lake Ashbaugh were less than four years of age, with age 3+ bass serving as the dominant year class. Proportional and relative stock density values were 25 and …


Survey Of Mollusca (Bivalva: Unionacea) Inhabiting Myatt Creek, Fulton County, Arkansas, Chris L. Davidson, George L. Harp, John L. Harris Jan 1997

Survey Of Mollusca (Bivalva: Unionacea) Inhabiting Myatt Creek, Fulton County, Arkansas, Chris L. Davidson, George L. Harp, John L. Harris

Journal of the Arkansas Academy of Science

No abstract provided.


Ground Flora Composition Following Harvesting Of A Bottomland Hardwood Forest In The Mississippi River Batture Lands, James E. Kellum, Eric Sundell, Brian Roy Lockhart Jan 1997

Ground Flora Composition Following Harvesting Of A Bottomland Hardwood Forest In The Mississippi River Batture Lands, James E. Kellum, Eric Sundell, Brian Roy Lockhart

Journal of the Arkansas Academy of Science

No abstract provided.


Greek Conceptions Of Naming: Three Forms Of Appropriateness In Plato And The Literary Tradition, Susan B. Levin Jan 1997

Greek Conceptions Of Naming: Three Forms Of Appropriateness In Plato And The Literary Tradition, Susan B. Levin

Philosophy: Faculty Publications

No abstract provided.


Ursinus Magazine, Winter 1997, Wendy Greenberg, Dave Sherman, Joanna Doyle, Sally Widman, Nicole Minardi, Paul Madson, Maria Costa, Anupy Singla Jan 1997

Ursinus Magazine, Winter 1997, Wendy Greenberg, Dave Sherman, Joanna Doyle, Sally Widman, Nicole Minardi, Paul Madson, Maria Costa, Anupy Singla

Ursinus Magazine, 1995–Present

Letters to the editor • Mellon grant • With honors • Ursinus College web page is growing • Election '96 on campus: The world at our fingertips • Water colors, East Asian artifacts among Berman Museum exhibits • Author calls on students to nurture spirituality • A gathering of scholars • Faculty updates • Alumni Association news • Welcome back! • From the Alumni Association Executive Board • Extra! Extra! Ursinus makes the NY Times • The Pfahler project: Fostering the spirit of inquiry • Banking on the future: Cynthia Fisher pioneers promising field • Laura Borsdorf: Motivating couch potatoes …


Language Of Lullabies: The Russification And De-Russification Of The Baltic States, 19 Mich. J. Int'l L. 219 (1997), Sonia Bychkov Green Jan 1997

Language Of Lullabies: The Russification And De-Russification Of The Baltic States, 19 Mich. J. Int'l L. 219 (1997), Sonia Bychkov Green

UIC Law Open Access Faculty Scholarship

No abstract provided.


Adaptive Significance Of Re-Nesting Following Nest Abandonment In The Blue-Gray Gnatcatcher (Polioptila Caerulea), Melissa Nicole Helton Jan 1997

Adaptive Significance Of Re-Nesting Following Nest Abandonment In The Blue-Gray Gnatcatcher (Polioptila Caerulea), Melissa Nicole Helton

Masters Theses

We studied the adaptive significance of nest abandonment and re-nesting in the Blue-gray Gnatcatcher (Polioptila caerulea) in east-central Illinois from 1995 through 1997. This Neotropical migrant is widely distributed and highly persistent in re-nesting following nest abandonment. Nest abandonment may be a response to brood parasitism, predation or other nest disturbances. We studied the nesting behavior of gnatcatchers and investigated the cues which may elicit nest abandonment. We monitored 57 pairs of gnatcatchers which built a total of 98 nests. Twenty pairs successfully fledged a total of 63 young and overall nest success was only 8.5%. Daily mortality rates for …


Oxygen-Dependent Metabolism Of Organic Xenobiotics In Marine Fish And Mussel, Laurence David Peters Jan 1997

Oxygen-Dependent Metabolism Of Organic Xenobiotics In Marine Fish And Mussel, Laurence David Peters

School of Biological and Marine Sciences Theses

Studies were undertaken to examine the processes of oxygen-dependent organic xenobiotic metabolism in fish and mussel. The antioxidant enzymes superoxide dismutase (EC 1.15.1.1 ), catalase (EC 1.11.1.6), selenium-dependent glutathione peroxidase (SeGPX; EC 1.11.1.9) glutathione reducate (EC 1.6.4.2), DT Diaphorase (quinone oxidoreductase; EC 1.6.99.2), total GPX activity (sum of SeGPX and Se-independent GPX activities) and levels of cytochrome P450 (CYP) were determined in 13 500g supernatants of embryos, 3- day and 11-day post-hatch larvae of turbot Scophthalmus maximus. The early life stages of S. maximus demonstrated the potential to detoxify reactive oxygen species (ROS), organic peroxides and redox cycling compounds. The …


The Development Of Novel Techniques For Characterisation Of Marine Zooplankton Over Very Large Spatial Scales, Christopher Paul Gallienne Jan 1997

The Development Of Novel Techniques For Characterisation Of Marine Zooplankton Over Very Large Spatial Scales, Christopher Paul Gallienne

School of Biological and Marine Sciences Theses

Marine zooplankton play an important role in the transfer of CO2 from the atmosphere/ocean system to deeper waters and the sediments. They also provide food for much of the world's fish stocks and in some areas of the ocean depleted of nutrients they sustain phytoplankton growth by recycling nutrients. They therefore have a profound effect on the carbon cycle and upon life in the oceans. There is a perceived lack of information about global distributions of zooplankton needed to validate ecosystems dynamics models, and the traditional methods of survey are inadequate to provide this information. There is a need to …


Karl Patterson Schmidt, John A. Drobnicki Jan 1997

Karl Patterson Schmidt, John A. Drobnicki

Publications and Research

Karl Patterson Schmidt turned herpetology firom a hobby into a branch of biology, and influenced numerous young biologists as an editor, teacher, author, and curator.


Merritt Lyndon Fernald, John A. Drobnicki Jan 1997

Merritt Lyndon Fernald, John A. Drobnicki

Publications and Research

Merritt Lyndon Fernald trained the future leaders in taxonomy and descriptive botany and helped maintain a high level in botanical writing through his work as editor of Rhodora.


The Immovable Object Versus The Irresistible Force: Rethinking The Relationship Between Secured Credit And Bankruptcy Policy, F. Stephen Knippenberg Jan 1997

The Immovable Object Versus The Irresistible Force: Rethinking The Relationship Between Secured Credit And Bankruptcy Policy, F. Stephen Knippenberg

Faculty Articles

No abstract provided.


Recent Publications On Waders 68, Henk Koffijberg Jan 1997

Recent Publications On Waders 68, Henk Koffijberg

Wader Study Group Bulletin

No abstract provided.


Reviews, Wader Study Group Bulletin Jan 1997

Reviews, Wader Study Group Bulletin

Wader Study Group Bulletin

No abstract provided.


Recent Literature, Journal Of Field Ornithology Jan 1997

Recent Literature, Journal Of Field Ornithology

Journal of Field Ornithology

No abstract provided.


Using Post-Ovulatory Follicles To Determine Laying Histories Of American Coots: Implications For Nutrient-Reserve Studies, Todd W. Thompson, C. Davison Ankney Jan 1997

Using Post-Ovulatory Follicles To Determine Laying Histories Of American Coots: Implications For Nutrient-Reserve Studies, Todd W. Thompson, C. Davison Ankney

Journal of Field Ornithology

No abstract provided.


Effects Of Nasal Discs On Nesting By Mallards, David W. Howerter, Brian L. Joynt, Robert B. Emery, Tomasz P. Sankowski Jan 1997

Effects Of Nasal Discs On Nesting By Mallards, David W. Howerter, Brian L. Joynt, Robert B. Emery, Tomasz P. Sankowski

Journal of Field Ornithology

No abstract provided.


Evidence Of Newell's Shearwater Breeding In Puna District, Hawaii, Michelle H. Reynolds, George L. Ritchotte Jan 1997

Evidence Of Newell's Shearwater Breeding In Puna District, Hawaii, Michelle H. Reynolds, George L. Ritchotte

Journal of Field Ornithology

No abstract provided.


Cover Characteristics And Success Of Natural And Artificial Duck Nests, Karla L. Guyn, Robert G. Clark Jan 1997

Cover Characteristics And Success Of Natural And Artificial Duck Nests, Karla L. Guyn, Robert G. Clark

Journal of Field Ornithology

No abstract provided.


Field Techniques For Studying Breeding Yellow Rails, Michel Robert, Pierre Laporte Jan 1997

Field Techniques For Studying Breeding Yellow Rails, Michel Robert, Pierre Laporte

Journal of Field Ornithology

No abstract provided.


Radio Transmitters Do Not Affect Nestling Feeding Rates By Female Hooded Warblers, Diane L. Neudorf, Trevor E. Pitcher Jan 1997

Radio Transmitters Do Not Affect Nestling Feeding Rates By Female Hooded Warblers, Diane L. Neudorf, Trevor E. Pitcher

Journal of Field Ornithology

No abstract provided.


A Motorized Food Box For Use In Supplemental Feeding Experiments, Johanna M. Ward, Robert Booth, Patricia L. Kennedy Jan 1997

A Motorized Food Box For Use In Supplemental Feeding Experiments, Johanna M. Ward, Robert Booth, Patricia L. Kennedy

Journal of Field Ornithology

No abstract provided.


The Breeding Biology Of The Pied Water-Tyrant And Its In Teractions With The Shiny Cowbird In Venezuela, Alexander Cruz, Robert W. Andrews Jan 1997

The Breeding Biology Of The Pied Water-Tyrant And Its In Teractions With The Shiny Cowbird In Venezuela, Alexander Cruz, Robert W. Andrews

Journal of Field Ornithology

No abstract provided.


Sex Determination Of Adult Humboldt Penguins Using Morphometric Characters, Carlos B. Zavalaga, Rosana Paredes Jan 1997

Sex Determination Of Adult Humboldt Penguins Using Morphometric Characters, Carlos B. Zavalaga, Rosana Paredes

Journal of Field Ornithology

No abstract provided.


Breeding Biology Of Aplomado Falcons In Desert Grasslands Of Chihuahua, Mexico, Angel B. Montoya, Phillip J. Zwank, Manuel Cardenas Jan 1997

Breeding Biology Of Aplomado Falcons In Desert Grasslands Of Chihuahua, Mexico, Angel B. Montoya, Phillip J. Zwank, Manuel Cardenas

Journal of Field Ornithology

No abstract provided.


Geese As Frugivores And Probable Seed-Dispersal Mutualists, Mary F. Willson, Anna Traveset, Carlos Sabag Jan 1997

Geese As Frugivores And Probable Seed-Dispersal Mutualists, Mary F. Willson, Anna Traveset, Carlos Sabag

Journal of Field Ornithology

No abstract provided.


California Sea Lion Predation On Chicks Of The Common Murre, Douglas J. Long, Lucy Gilbert Jan 1997

California Sea Lion Predation On Chicks Of The Common Murre, Douglas J. Long, Lucy Gilbert

Journal of Field Ornithology

No abstract provided.