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2002

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Volume 40, Number 10: November 1, 2002, University Of North Dakota Nov 2002

Volume 40, Number 10: November 1, 2002, University Of North Dakota

University Letter Archive

No abstract provided.


Chalcolithic Copper Objects From Cave Viii/28, Irena Segal, Andrei Kamenski Oct 2002

Chalcolithic Copper Objects From Cave Viii/28, Irena Segal, Andrei Kamenski

'Atiqot

No abstract provided.


Predators And Life Histories Shape Lestes Damselfly Assemblages Along A Freshwater Habitat Gradient, Robby Stoks, Mark A. Mcpeek Oct 2002

Predators And Life Histories Shape Lestes Damselfly Assemblages Along A Freshwater Habitat Gradient, Robby Stoks, Mark A. Mcpeek

Dartmouth Scholarship

Survey data from New England showed that assemblages of Lestes dam- selflies are organized along the entire gradient of pond permanence and predator presence. One assemblage occupies vernal ponds lacking large dragonfly predators and fish; four are largely confined to temporary ponds that typically contain dragonfly predators; one dom- inates fishless permanent ponds and lakes where dragonflies are the top predators; and one dominates permanent ponds and lakes where fish are the top predators. We determined the role of life history and predation in maintaining this striking pattern by conducting a series of transplant experiments in the field and a …


Unh Expedition Leaves May 10 To Find A New Story In The Ice, Amy Seif Apr 2002

Unh Expedition Leaves May 10 To Find A New Story In The Ice, Amy Seif

Media Relations

No abstract provided.


Development Of Diagnostic Approaches To Determine Sources Of Anthropogenic Stress Affecting Benthic Community Conditions In The Chesapeake Bay, Daniel M. Dauer, Michael F. Lane, Roberto J. Llansó Apr 2002

Development Of Diagnostic Approaches To Determine Sources Of Anthropogenic Stress Affecting Benthic Community Conditions In The Chesapeake Bay, Daniel M. Dauer, Michael F. Lane, Roberto J. Llansó

Benthic Applications

Benthic macrofauna are an important component of estuarine ecosystems. These organisms are a food source for higher trophic levels including fishes and crabs (Virnstein 1977, 1979; Holland et al. 1980; Dauer et al. 1982) and birds (Botton 1984; Quammen 1984). Benthic macrofauna affect both the physical and chemical properties of the sediment and the overlying water column (e.g., Rhoads and Young 1970; Rhoads 1973; Aller 1978, 1980), influence nutrient cycling (Rowe et al 1975; Zeiteschel 1980; Flint and Kamykowski 1984), and are capable of directly controlling phytoplankton biomass in the water column (Cleorn 1982; Officer et al 1982; Cohen et …


Effects Of Developmental Activities On Streamside Salamander Communities In Boone County, West Virginia, Mindy S. Hamilton Jan 2002

Effects Of Developmental Activities On Streamside Salamander Communities In Boone County, West Virginia, Mindy S. Hamilton

Theses, Dissertations and Capstones

A study was conducted from May 1998 through June 1999 in three streams associated with mountaintop mining and valley fills in Boone County, West Virginia. Streamside salamander communities were monitored in these streams, as well as in two relatively undisturbed reference streams in the region, using refugia bags, rock-on-rock methodology, and day surveys. The relative abundance of salamanders was compared between the streams in order to detect effects of the associated valley fills to downstream biota. Relative abundance was lower in two of three streams associated with valley fills as compared to the reference streams. However, there was no significant …


Electroluminescence Of Charge-Transfer Fluorescent Donor-Bridge-Acceptor Systems, J. W. Verhoeven, J. W. Hofstraat, K. Brunner Jan 2002

Electroluminescence Of Charge-Transfer Fluorescent Donor-Bridge-Acceptor Systems, J. W. Verhoeven, J. W. Hofstraat, K. Brunner

The Spectrum

No abstract provided.


Hydrogeology Of The Sistema Huautla Karst Groundwater Basin Association For Mexican Cave Studies Bulletin, Vol. 9, 2002, James H. Smith Jr. Jan 2002

Hydrogeology Of The Sistema Huautla Karst Groundwater Basin Association For Mexican Cave Studies Bulletin, Vol. 9, 2002, James H. Smith Jr.

KIP Articles

Sistema Huautla, in 2002 the world’s seventh deepest cave, at 1,475 meters, is one of the most complex vertical drainage systems in the world. The focus of this research was to study the geology, karst hydrology, and speleology of the Sistema Huautla cave system. Literature review and subsequent field mapping identified the geologic formations and tectonic structures that Sistema Huautla and tributary caves are developed within. Structural geology studies within the aquifer indicate that base-level conduits in the mapped portion of the aquifer are formed along a major normal fault system called the Sistema Huautla Fault. Conduits in other sections …


Uri Undergraduate And Graduate Course Catalog 2002-2003, University Of Rhode Island Jan 2002

Uri Undergraduate And Graduate Course Catalog 2002-2003, University Of Rhode Island

URI Course Catalogs Archive

This is a digitized, downloadable version of the University of Rhode Island course catalog.


Nonactin Biosynthesis : Studies Toward The Synthesis Of Stable Isotope Labeled Potential Precursors, Melanie Bengtson Jan 2002

Nonactin Biosynthesis : Studies Toward The Synthesis Of Stable Isotope Labeled Potential Precursors, Melanie Bengtson

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


Bank Erosion And Metal Loading In A Contaminated Floodplain System Upper Clark Fork River Valley Montana, Benjamin John Swanson Jan 2002

Bank Erosion And Metal Loading In A Contaminated Floodplain System Upper Clark Fork River Valley Montana, Benjamin John Swanson

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


On The Relative Role Of Convection, Chemistry, And Transport Over The South Pacific Convergence Zone During Pem-Tropics B: A Case Study, Céline Mari, Carine Saüt, Daniel J. Jacob, Amanda Staudt, Melody A. Avery, William H. Brune, Ian Faloona, Brian G. Heikes, Glen W. Sachse, Scott T. Sandholm, Hanwant B. Singh, David Tan Jan 2002

On The Relative Role Of Convection, Chemistry, And Transport Over The South Pacific Convergence Zone During Pem-Tropics B: A Case Study, Céline Mari, Carine Saüt, Daniel J. Jacob, Amanda Staudt, Melody A. Avery, William H. Brune, Ian Faloona, Brian G. Heikes, Glen W. Sachse, Scott T. Sandholm, Hanwant B. Singh, David Tan

Graduate School of Oceanography Faculty Publications

A mesoscale 3D model (Meso‐NH) is used to assess the relative importance of convection (transport and scavenging), chemistry, and advection in the vertical redistribution of HOx and their precursors in the upper tropical troposphere. The study is focused on marine deep convection over the South Pacific Convergence Zone (SPCZ) during the PEM‐Tropics B Flight 10 aircraft mission. The model reproduces well the HOx mixing ratios. Vertical variations and the contrast between north and south of the SPCZ for O3 are captured. Convection uplifted O3‐poor air at higher altitude, creating a minimum in the 9–12 km …


Sources Of Upper Tropospheric HoX Over The South Pacific Convergence Zone: A Case Study, Céline Mari, Carine Saüt, Daniel J. Jacob, François Ravetta, Bruce Anderson, Melody A. Avery, Donald R. Blake, William H. Brune, Ian Faloona, G. L. Gregory, Brian G. Heikes, Glen W. Sachse, Scott T. Sandholm, Hanwant B. Singh, Robert W. Talbot, David Tan, Stephanie Vay Jan 2002

Sources Of Upper Tropospheric HoX Over The South Pacific Convergence Zone: A Case Study, Céline Mari, Carine Saüt, Daniel J. Jacob, François Ravetta, Bruce Anderson, Melody A. Avery, Donald R. Blake, William H. Brune, Ian Faloona, G. L. Gregory, Brian G. Heikes, Glen W. Sachse, Scott T. Sandholm, Hanwant B. Singh, Robert W. Talbot, David Tan, Stephanie Vay

Graduate School of Oceanography Faculty Publications

A zero‐dimensional (0‐D) model has been applied to study the sources of hydrogen oxide radicals (HOx = HO2 + OH) in the tropical upper troposphere during the Pacific Exploratory Mission in the tropics (PEM‐Tropics B) aircraft mission over the South Pacific in March–April 1999. Observations made across the Southern Pacific Convergence Zone (SPCZ) and the southern branch of the Intertropical Convergence Zone (ITCZ) provided the opportunity to contrast the relative contributions of different sources of HOx, in a nitrogen oxide radical (NOx)‐limited regime, in relatively pristine tropical air. The primary sources of HOx …


Piagetian Developmental Reasoning Levels Of High School Students In Differentiated First Year Chemistry Courses, Pamela Kay Brewer-Michael Jan 2002

Piagetian Developmental Reasoning Levels Of High School Students In Differentiated First Year Chemistry Courses, Pamela Kay Brewer-Michael

Dissertations and Theses @ UNI

This research studied the developmental reasoning levels of students in three different first year high school chemistry courses as related to achievement defined by cumulative grade point average and course selection. The Lawson Test of Formal Operations modified by Roy Unruh and Bruce Perry at the University of Northern Iowa was used to determine cognitive developmental level of subjects. A consumer type chemistry course, a traditional high school chemistry course, and an honors course under consideration with Marshalltown Community College for credit status were the three courses utilized in this study. Data was collected in a classroom group setting over …