Digital Commons Network^™

Beryllium In Granulite-Facies Pegmatites In Archean Napier Complex, Antarctica, Edward S. Grew

University of Maine Office of Research Administration: Grant Reports

This award, provided by the Office of Polar Programs of the National Science Foundation, supports participation of a researcher from the University of Maine in an expedition of the Japanese Antarctic Research Expedition (JARE) to study beryllium enriched minerals in Enderby Land. Beryllium is a rare element in crustal rocks and enrichments are especially unusual in granulite-facies (high temperature and pressure, and relatively dry conditions) metamorphic rocks. This project focuses on unique beryllium-enriched pegmatites in the Archean ultra-high temperature (up to 1000 degrees C) granulite-facies Napier Complex in eastern Casey Bay, Enderby Land, East Antarctica. The primary objective is to …

Maine Campus December 15 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

The Dynamics And Significance Of Carbon Monoxide Exchanges Between Wetlands And The Atmosphere, Gary M. King

University of Maine Office of Research Administration: Grant Reports

Carbon monoxide (CO) plays a major role in atmospheric chemistry. Through a series of reactions, CO can contribute to the formation of tropospheric ozone, which poses a serious health concern on a regional scale. While anthropogenic sources of CO are reasonably well understood, relatively little is known about natural CO sources and sinks. Wetlands have been discounted as CO sources on the basis of sediment CO concentrations. However, plant leaves and stems produce significant amounts of CO when illuminated by the sun. Because of their large amounts of plant biomass, wetlands are likely strong net CO sources. Our work will …

Powre: High-Resolution Chronology Of Millennial-Scale Lake-Level Fluctuations In The Dry Valleys (Antarctica) From Uranium-Thorium And Radiocarbon Dating, Brenda L. Hall

University of Maine Office of Research Administration: Grant Reports

The Professional Opportunities for Women in Research and Engineering (POWRE) program affords new research and educational enhancement opportunities for women scientists. This project, which addresses the fundamental problem of the cause of millennial-scale climate change, contains components specifically designed to increase the educational and research skills of the principal investigator. She will learn the following new information/skills: 1) thermal ionization mass spectrometry (TIMS) uranium/thorium (U/TH) dating with Dr. G. Henderson at Lamont-Doherty Earth Observatory (LDEO) and Oxford University, 2) millennial-scale climate change with Drs. W. Broecker and G. Bond, LDEO, and with Drs. D. Oppo and L. Keigwin, Woods Hole …

An Intelligent System For Automated Dna Base Calling, Mohamad T. Musavi

University of Maine Office of Research Administration: Grant Reports

An investigation into improving the performance of DNA base calling algorithms was conducted. The results have shown that the preprocessing steps performed by ABI sequencer on raw data adversely affects the accuracy of DNA sequencing. This adverse effect has been responsible for relatively high error rates, between 3.5% to 6%, in both ABI and Phred sequencing software. Please note that Phred also uses the processed data generated by ABI sequencer; only their base-calling algorithm is different. To remedy this effect, we have developed and implemented a new filtering technique that preserves the initial information contained in the raw data. This …

Maine Perspective, V 12, I 8, Department Of Public Affairs, University Of Maine

General University of Maine Publications

The Maine Perspective, a publication for the University of Maine, was a campus newsletter produced by the Department of Public Affairs which eventually transformed into the Division of Marketing and Communication. Regular columns included the UM Calendar, Ongoing Events, People in Perspective, Look Who's on Campus, In Focus, and Along the Mall. The weekly newsletter also included position openings on campus as well as classified ads. Articles in this issue cover the Maine Mathematics-Science Teacher Excellence Collaborative seeking to improve recruitment and preparation of high school math and science instructors; the receipt of a $302,000 grant to build a coordinated …

Maine Campus December 08 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Maine Campus December 06 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Maine Public Radio Monthly Listings, Vol. 1, No. 2, Maine Public Broadcasting Network

Airplay: MPBN Radio Program Guide

Maine Public Radio Monthly Listings is a publication of Maine Public Broadcasting. Maine Public Broadcasting was founded by the University of Maine System and Colby, Bates and Bowdoin Colleges.

Airplay, Vol. 12, No. 2 (2000), Maine Public Broadcasting Network

Airplay: MPBN Radio Program Guide

Airplay is published to provide the most thorough information possible about MPBN Radio and its programs, hopefully in a visually appealing way. Each month of Airplay features works by Maine artists and photographers on its cover. Maine Public Broadcasting Network Radio is a member of National Public Radio (NPR) and the Eastern Public Radio Network (EPRN). Maine Public Broadcasting was founded by the University of Maine System and Colby, Bates and Bowdoin Colleges.

Maine Campus December 01 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Effects Of Neonatal Clomipramine Treatment On Photic And Non-Photic Circadian Phase Shifting In Rats, Suzanne M. Dwyer

Electronic Theses and Dissertations

Neonatal exposure to monoaminergic antidepressant drugs produces a wide variety of effects on the behavior and physiology of adult rats which parallel those observed in human depression. Monoaminergic neurotransmitter systems are involved in the regulation of both affective and circadian behaviors, and alterations in circadian rhythmicity have been observed in depressed patients and in several other animal depression models. The purpose of the present study was to explore circadian phase shifting following neonatal antidepressant treatment. Neonatal rats were divided into three treatment groups; a clomipramine-treated group, a saline-treated group, and an unhandled group. Daily injections of clomipramine (25 mg/kg SC), …

Development Of Realistic Simulations Of The Interactions Between Stars And The Interstellar Medium In Disk Galaxies, Thomas M. Zeltwanger

Electronic Theses and Dissertations

fWe have developed GALAXY, a two dimensional, self-consistent N-body plus hydro-dynamic computer program to model and study the behavior of disk galaxies like our Milky Way. Our goal is to better understand how such galaxies maintain their spiral structure for billions of years.

The program utilizes two independent gravitating N-body components. One simulates the collision-less star particles in the galaxy, and the other simulates colliding clouds. A gravitating hydrodynamic code simulates the interstellar medium. Additionally, a static spherical halo and a central black hole interact gravitationally with the other components of the model galaxy. All components interact with each other …

Leaf Area, Stemwood Volume Growth, And Stand Structure In A Mixed-Species, Multi-Aged Northern Conifer Forest, Laura Kenefic

Electronic Theses and Dissertations

Tree- and stand-level leaf area (LA) - stemwood volume growth relationships were explored in mixed-species, multi-aged northern conifer stands dominated by Tsuga canadensis (L.) Carr. (eastern hemlock), Abies balsameu (L.) Mill. (balsam fir), and Piceu rubens Sarg. (red spruce). A T. cunudensis LA model was developed to supplement published equations for A. bulsumeu and P. rubens. Sapwood area was an effective T. cunudensis LA surrogate, though nonsapwood-based models using stem cross-sectional area and modified live crown ratio produced results comparable to sapwood-based models. Equations for predicting tree-level stemwood volume increment (AVINC) were derived, and implied growth efficiencies (GE) were …

The Viscoelastic Behavior Of Pigmented Latex Coating Films, Katharina Prall

Electronic Theses and Dissertations

The mechanical properties of paper coatings are essential for use performance of coated paper (e.g. calendering, printing degradation during printing operations, pick). This study investigates the microscopic and macroscopic mechanisms that determine the viscoelastic behavior of pigmented latex coating films. Pigmented coating layers were prepared with different microstructures. This was achieved by using different pigment types and shapes (polystyrene plastic pigment - spheres, precipitated calcium carbonate - rhombs, clay - plates), and changing pigment volume concentration (PVC). Two styrene-butadiene latices with different degree of carboxylation (acidic level 0.3% and 4.5%) were evaluated to determine effect of adhesion. The viscoelastic material …

Factors Influencing Net Primary Production In Red Spruce, Michael Day

Electronic Theses and Dissertations

Management of forest resources, even when practiced at the scale of ecosystems, is implicitly based on managing photosynthetic acquisition of carbon by trees. This thesis examines several aspects of carbon balance at the scale of individual trees, using red spruce (Picea rubens Sarg.) as a model species. Age-related declines in net primary productivity have been described for many species, including red spruce. A potential explanation is that ontogenetic changes in meristems lead to lower photosynthetic rates, which was confirmed here for red spruce. A grafting study used scions from juvenile, 6Oy, and 120~ trees to demonstrate that age-related morphological …

Redox Studies On The Anti-Rheumatoid Arthritis Gold Drugs: Auranofin And Solganol, Ahmed A. Mohamed

Electronic Theses and Dissertations

The oxidative behavior of Auranofin, 2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranosato-S(triethylphosphine)gold(I), was investigated by using cyclic voltammetry (CV) in 0.1 M Bu₄NBF₄/CH₂Cl₂ and 0.1 M Bu₄NPF₆/CH₂Cl₂ solutions using Pt working and auxiliary electrodes and a Ag/AgCl reference. CV studies at scan rates from 50-2,000mVs^-1 and Auranofin concentrations between 1 and 4mM, show two irreversible oxidation processes occurring at +1.1 V and +1.6 V vs. Ag/AgCl. Treatment of Auranofrn with the one electron oxidizing agent [Cp₂Fe]PF₆ gave a μ-thiolato digold cluster, [(Et₃PAu)₂(μ-SR)]₂^{2+ …}

Distribution And Impact Of The Oyster Parasite Bonamia Ostreae In Maine, And Its Detection Using Dna Probes, Ryan Carnegie

Electronic Theses and Dissertations

Health management efforts in Maine related to the flat oyster (Ostrea edulis) parasite Bonamia ostreae are limited by a lack of knowledge of the parasite’s distribution and impact in both wild and cultured populations. This information would be more readily obtainable with improved diagnostic tools. The objectives of this dissertation were to design sensitive and specific DNA probes for detection of B. ostreae; to assess the prevalence and intensity of parasite infections in wild oyster populations in Maine; and to evaluate growth and mortality of cultured oysters in the Damariscotta River, where B. ostreae is enzootic. A polymerase …

Creating Virtual Wood Particulate Composites, Huaijun Wang

Electronic Theses and Dissertations

Wood particulate composites are inhomogeneous, short fiber materials. The behavior of such materials depends on the properties of the constituent elements (wood particles, fibers, and adhesives) and the manner in which they are organized (the microstructure). Research on the microstructure of these composites has been carried out for several decades. However, due to the complexity of the engineered structures, most existing works are either over-simplified or lacking in general representations. While experimental approaches to improve material performance are necessary, this thesis presents another approach for better depictions of such complex systems. In this research project, digital surrogates of the composite …

Presentation Of The Sun King: The Performance Of Power In 17th Century French Ballets Des Entrees, David Shuhly

Electronic Theses and Dissertations

This study will examine how Cardinal Mazarin, through the ballets Le Ballet de la Nuit and Ballet de la Nopces de Pelee et de Thetis, created the image of Louis XIV as the "Sun King." Mazarin, through the power of theatrics and the performance of power, forged Louis's image fiom near-exile to absolute monarch. Both of these ballets created a world, image, and mythology of Louis that affected not only those in attendance, but also the people of France and Europe. Through the use of Italianate scenic practices and technologically advanced machinery, such as Torelli's "chariot-and-pole" system, elaborate costumes, …

Maine Campus November 29 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Maine Perspective, V 12, I 7, Department Of Public Affairs, University Of Maine

General University of Maine Publications

The Maine Perspective, a publication for the University of Maine, was a campus newsletter produced by the Department of Public Affairs which eventually transformed into the Division of Marketing and Communication. Regular columns included the UM Calendar, Ongoing Events, People in Perspective, Look Who's on Campus, In Focus, and Along the Mall. The weekly newsletter also included position openings on campus as well as classified ads. Included in this issue is an article reporting on IT education and the Maine economy; the need for strategic information technology planning; and undergraduate students participating in the annual forestry camp during a logging …

Maine Campus November 17 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Workshop: A Cross-Biome Synthesis Of Ecosystem Response To Global Warming; October 1998 In Santa Barbara, Ca, Ivan J. Fernandez, Lindsey Rustad

University of Maine Office of Research Administration: Grant Reports

Greenhouse gas emissions are expected to increase mean global temperature by 3-5 C in the next 50-100 years. The consequences of this warming for primary ecosystem processes are not yet understood, and have become tile focus of an emergent field of ecological research. This project will bring together a multi-disciplinary, international group of scientists representing 22 soil/air warming sites from seven countries to synthesize the current knowledge on the effects of elevated temperature on terrestrial ecosystems. In addition, the participants will use this forum to discuss and launch a new GCTE Ecosystem Warming Consortium, which will have far reaching effects …

Maine Campus November 15 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Maine Campus November 13 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Maine Perspective, V 12, I 6, Department Of Public Affairs, University Of Maine

General University of Maine Publications

The Maine Perspective, a publication for the University of Maine, was a campus newsletter produced by the Department of Public Affairs which eventually transformed into the Division of Marketing and Communication. Regular columns included the UM Calendar, Ongoing Events, People in Perspective, Look Who's on Campus, In Focus, and Along the Mall. The weekly newsletter also included position openings on campus as well as classified ads. Coverage includes, "Maine Center for the Arts to undergo $9 million rejuvenation in 2002;" "President establishes new Campus Planning Committee;" "Museum of Art headed to Norumbega Hall in Bangor;" and "Banding Together."

Maine Campus November 10 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Maine Campus November 06 2000, Maine Campus Staff

Maine Campus Archives

No abstract provided.

Math/Science Teacher Collaborative Targets Campuswide Participation, Kay Hyatt

General University of Maine Publications

The Maine Mathematics-Science Teacher Excellence Collaborative is actively working toward its goals of improving the recruitment, preparation and support of students with strong interests in math, science and technology to help address the national shortage of math and science teachers for grades 7-12.