Digital Commons Network^™

Spectator 2001-05-17, Editors Of The Spectator

The Spectator

No abstract provided.

Phytochemistry And Chemosystematics Of Artemisia Arctica In Alaska, Chance W. Riggins

Chemistry and Biochemistry

Artemisia L. (Asteraceae - Anthemideae) is a large and taxonomically complex genus occurring widely throughout the northern hemisphere. Chemical investigations in this genus have mainly been stimulated by the economic and/or medicinal importance of many of its members. This chemical knowledge has also provided useful criteria for resolving systematic uncertainties within the genus. Alaskan Artemisia species are little known chemically despite their historic and contemporary medicinal use. Therefore, an investigation of the chemistry of Alaskan Artemisia arctica was initiated with the dual purpose of searching for structurally novel and/or biologically active compounds and contributing additional criteria for systematic studies of …

Evaluation Of Wolf Density Estimation From Radiotelemetry Data, John W. Burch

Biological Sciences

Density estimation of wolves (Canis lupus) requires a count of individuals and an estimate of area those individuals inhabit. With radiomarked wolves, the count is straightforward but estimation of area is more difficult and often given inadequate attention. The population area, based on the mosaic of pack territories, is influenced by sampling intensity similar to individual home ranges. If sampling intensity is low, population area will be underestimated and wolf density will be inflated. Using data from studies in Denali National Park and Preserve, I investigated these relationships using Monte Carlo simulation to evaluate effects of radiolocation effort and number …

Social Organization And Spatial Relationships In Coastal River Otters: Assessing Form And Function Of Social Groups, Sex-Biased Dispersal, And Gene Flow, Gail Marie Blundell

Biological Sciences

River otters (Lontra canadensis) inhabiting marine environments are top-level predators foraging in the nearshore ecosystem and recently have been recognized as indicators of environmental health. Otters were extirpated from much of their historic distribution because of exposure to pollution and urbanization, resulting in expansive reintroduction programs that continue today. Without an understanding of the influence of factors such as social structure, mating system, or sex-biased dispersal on genetic variation and gene flow among populations, effects of local extirpation and the potential for natural recolonization (i.e., the need for reintroductions) cannot be determined. The objective of this study was to assess …

Impact Analysis Of The Marine Sport Fisheries Of Middle And Lower Cook Inlet, Charles David Hamel

Economics

Impact analysis models such as Input-Output (I-O) can provide a view of the regional economic significance of a resource-based industry. Analysts often utilize impact analyses to predict the distributive outcomes of demand shocks to local industries; however, even if such forecasts are modeled appropriately within the impact assessment framework, the results are not particularly relevant if the motives and magnitudes of demand change are arbitrarily posed. In order for an impact analysis to be meaningful, it should not stand alone, but instead be part and parcel of a more encompassing modeling approach comprising a demand function. This paper describes a …

Trophic Dynamics Of Pinniped Populations In Alaska Using Stable Carbon And Nitrogen Isotope Ratios, Amy Christia Hirons

Marine Biology

Trophic changes in populations of Stellar sea lions (Eumetorias jubatus), northern fur seals (Callorhinus ursinus) and harbor seals (Phoca vitulina) in the eastern Bering Sea and Gulf of Alaska were studied using stable isotope analysis. Declining populations of all three species of pinnipeds prompted this study to determine if changes in diet, likely resulting from food limitation, contributed to the declines. Stable carbon and nitrogen isotope ratios were analyzed in the vibrissae (whiskers) and body tissues of pinnipeds from 1993-1998 and compared with muscle tissue from prey species during the same time period to determine pinniped trophic dynamics. Vibrissae growth …

Saxitoxins: Role Of Prokaryotes, Tracie Renee Baker

Marine Biology

Saxitoxins, the toxins associated with paralytic shellfish poisoning (PSP), are synthesized by dinoflagellates, cyanobacteria, and possibly bacteria. The specific objectives of this study were to determine growth conditions that promote high and low levels of toxin accumulation in Aphanizomenon flos-aquae (cyanobacterium) and Pseudomonas stutzeri (bacterium). Putative saxitoxins of P. stutzeri identified by HPLC-FLD in this study, and previously by other laboratories, were determined to be 'imposters' based on their chemical and physical properties, suggesting that this bacterium may not synthesize PSP toxins. In the cyanobacterium, toxin production was enhanced under higher light intensities and temperatures. Toxin accumulation reached maximal levels …

Modeling Stand-Level Canopy Maintenance Respiration Of Black Spruce Ecosystems In Alaska: Implications For Spatial And Temporal Scaling, Xinxian Zhang

Biological Sciences

Canopy respiration represents an important part of the carbon budget of black spruce forests. In this study I scaled hourly models of foliar maintenance respiration (Rm) to estimate canopy Rm for individual stands, and investigated issues in scaling the models to estimate canopy Rm using mean monthly temperature data. I used data from several stands to develop hourly stand-specific and stand-independent models of canopy Rm. Analysis of stimulated canopy Rm indicated that stand-level controls over foliar N concentration should be considered in models that estimate canopy Rm of black spruce stands across the landscape. Uncertainty analyses indicated that the parameter …

Winter Vertebrate Browsing Of Birch: Effects On The Use Of Leaf Litter Leachates By Stream Microorganisms, Jeffrey L. Estensen

Biological Sciences

Winter browsing of birch leads to chemical changes in leaves of the following growing season, potentially generating differences in the quality of leachates derived from leaf litter and in leachate use by stream microorganisms. The effects of moose browsing were tested on leachates from leaves collected from browsed and unbrowsed trees and inoculated with microbial communities. Respiration and bacterial abundance were used to assess qualitative differences in leachates. Microbes cultured in leachates derived from leaves of browsed trees had significantly higher rates of oxygen uptake. There were no significant differences in bacterial abundance between treatments. The basis for the qualitative …

Phylogenetic Relationships Of The Oxytropis Campestris And Oxytropis Arctica Complexes In Alaska Inferred From Non-Coding Nuclear Dna And Rapd Data, Janet Lynn Jorgensen

Biological Sciences

The taxonomy and evolutionary relationships of the Oxytropis arctica and Oxytropis campestris complexes in Alaska are poorly understood. Taxonomic disagreement has centered on which morphological characters are important in circumscribing these taxa. Several of these taxa are endemic to Alaska, including Oxytropis arctica var. barnebyana, which is currently of conservation concern. Internal transcribed spacer sequences and randomly amplified polymorphic DNA markers were employed to circumscribe these taxa. Both lines of evidence revealed one major dichotomy dividing northern populations from western populations. There is weak support for traditional taxonomies. Morphological characters used to separate these taxa do not assort to either …

Hepatitis B In Arctic Ground Squirrels (Spermophylus Parryi): Epidemiology And Population Biology, Philip John Joy

Biological Sciences

Using a mark-recapture design, an epidemiological investigation of Hepatitis B was performed on four colonies of Spermophylus parryi. Animals were trapped, marked and bled. Serum samples were screened for Hepatitis B markers. Program MARK was used to estimate survival rates. Prevalence rates ranged over 55% and 1999 rates were 10% higher than 1998. Vertical transmission of the virus was not observed and juveniles were unaffected by the mother's hepatitis status. Immigrants had lower prevalence rates than residents and incidence rates accelerated throughout the study. Survival was highest during the over-winter period and adult rates were lower in 1999. Recovered animals …

Molecular And Morphological Perspectives On Post-Glacial Colonization Of Clethrionomys Rutilus And Clethrionomys Gapperi In Southeast Alaska, Amy Marie Runck

Biological Sciences

Pleistocene events had a significant impact on the geographic distributions of high latitude organisms. Recently deglaciated, Southeast Alaska has been colonized by two species of red-backed voles, clethrionomys rutilus and C. gapperi. With distinct biogeographic histories, post-glacial colonization of C. rutilus and C. gapperi into this region would have occurred by different routes. Variation in the mitochondrial cytochrome b gene, the MYH2 nuclear intron, and the post palatal bridge were assessed to examine phylogeographic patterns of these two species, and a proposed contact zone in southeast Alaska. Low, but consistent, levels of sequence divergence of the cytochrome b gene were …

Mustang Daily, May 16, 2001

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Catalyst, New College Of Florida

Student Publications

Eight page issue of the student produced newspaper.

Miscellaneous Publication 009/2001 - Pistachios Western Australia An Income Producing Reforestation Opportunity For The Wheatbelt, Andrew Quinn

Horticulture published reports

Faced with a rising water-table, salt and acid land impacts, the Western Australian Wheatbelt requires significant changes to traditional farming system models.

Part of this drive towards improved sustainability is the need to re-plant substantial areas to tree belts or blocks. One of the limiting factors in the widescale adoption of on-farm tree planting is the narrow range of opportunities to generate income from these sites.

This report presents a model for the development of a Pistachio nut industry with production integrated into existing Wheatbelt farming systems. In addition to offering significant environmental benefits, the Pistachio tree offers the opportunity …

An Exploratory Study Of Independent Living Skills Of Emancipated Treatment Foster Care, Christine Marie Beseman Durocher

Theses and Graduate Projects

This exploratory qualitative study examines the independent living skills that are possessed upon emancipation from foster care and identifies those areas that need further development, which may arise in successful transition into adulthood. This study also attempts to identify if the independent livings skills possessed were learned through foster parents modeling appropriate behavior. The study sample includes 10 former foster children who are now adults and living independently, who were interviewed face to face. The guide consisted of open and closed questions, which allow for optimal feedback from the respondents. The results suggest that those individuals who age out of …

University Of Montana Events Thursday, May 17, Through Thursday, May 24, 2001, University Of Montana--Missoula. Office Of University Relations

University of Montana News Releases, 1928, 1956-present

No abstract provided.

The Guardian, May 16, 2001, Wright State University Student Body

The Guardian Student Newspaper

Twenty page issue of The Guardian, the official student-run newspaper for Wright State University. The Guardian has been published regularly since March of 1965.

Ke Alaka'i, Vol. 65, No. 19 (2001-05-16), Brigham Young University Hawaii

Ke Alaka'i

No abstract provided.

A Prairie Rendezvous, Vol. 3, No. 2 (Spring 2001), Grand Prairie Friends Of Illinois, Prairie Grove Volunteers

Newsletters

No abstract provided.

Efficient New Ribozyme Mimics: Direct Mapping Of Molecular Design Principles From Small Molecules To Macromolecular, Biomimetic Catalysts, William C. Putnam, Andrew T. Daniher, Bobby N. Trawick, James K. Bashkin

Educator Preparation & Leadership Faculty Works

Dramatic improvements in ribozyme mimics have been achieved by employing the principles of small molecule catalysis to the design of macromolecular, biomimetic reagents. Ribozyme mimics derived from the ligand 2,9-dimethylphenanthroline (neocuproine) show at least 30-fold improvements in efficiency at sequence-specific RNA cleavage when compared with analogous o-phenanthroline- and terpyridine-derived reagents. The suppression of hydroxide-bridged dimers and the greater activation of coordinated water by Cu(II) neocuproine (compared with the o-phananthroline and terpyridine complexes) better allow Cu(II) to reach its catalytic potential as a biomimetic RNA cleavage agent. This work demonstrates the direct mapping of molecular design principles from small-molecule …

Mclennan Community College Graduation Speech - 2001, George C. Wright

President Emeritus George C. Wright Speeches

No abstract provided.

Equatorial Upwelling In The Western Pacific Warm Pool, Robert W. Helber, Robert H. Weisberg

Marine Science Faculty Publications

Vertical velocity on the equator in the western Pacific warm pool is investigated using data from the Coupled Ocean‐Atmosphere Response Experiment enhanced monitoring array (EMA) centered at 0°, 156°E. The data consist of hourly subsurface horizontal velocity time series from August 1991 until April 1994. Vertical velocity is calculated using horizontal velocity components and the application of the continuity equation. During the first year, from March 1992 until February 1993, data are available from five moorings of the EMA and thus provide nine different combinations of moorings from which to calculate vertical velocity. Four moorings were available during the remaining …

Controls On Floc Size In A Continental Shelf Bottom Boundary Layer, Paul S. Hill, George Voulgaris, John H. Trowbridge

Faculty Publications

Simultaneous in situ observations of floc size, waves, and currents in a continental shelf bottom boundary layer do not support generally accepted functional relationships between turbulence and floc size in the sea. In September and October 1996 and January 1997, two tripods were deployed in 70 m of water on the continental shelf south of Woods Hole, Massachusetts. On one a camera photographed particles in suspension 1.2 m above the bottom that had equivalent circular diameters larger than 250 um, and on the other, three horizontally displaced acoustic current meters measured flow velocity 0.35 m above the bottom. The …

Methods Of Diagnosing A Pathology Characterized By A Cell Proliferative Disorder Associated With Connective Tissue Growth Factor, Gary R. Grotendorst, Douglass Douglass M. Bradham

USF Patents

The present invention provides a novel polypeptide, Connective Tissue Growth Factor (CTGF), polynucleotides encoding CTGF, and including 5' and 3' untranslated nucleotides, antibodies reactive with CTGF and means for producing CTGF. Also provided are diagnostic and therapeutic methods for using CTGF, as well as an assay for identifying compositions which affect the expression of CTGF polynucleotide. The invention provides a novel TGF-.beta. responsive element upstream of the polynucleotide encoding CTGF structural gene.

Green From Concept To Rebirth, Sharon Mckenna

Theses

None provided.

Databodies, Genitals, And Living Forever, Mark Gonzales

SWITCH

No abstract provided.

Difi: Digital And Fiber, Wendy Angel

SWITCH

This article discusses the similarities between the histories of digital technologies and textiles. The author describes the ways that digital and fiber technologies are affected by the growing arts and cultures. The author provides details of how digital and fiber technologies are both used as signal-transmitting information media. The article describes the importance of both digital and fiber in societal standing, the power and status it generates, and how they separates the wealthy and the working class. The article closes with an interpretative analysis of the interwoven properties between industry, information, technology, and art.

Lifelike, Nora Raggio

SWITCH

No abstract provided.

Mustang Daily, May 14, 2001

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.