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1996

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Permafrost, Vol. 18 (Fall 1996), N/A Alaska Association For The Arts Apr 1996

Permafrost, Vol. 18 (Fall 1996), N/A Alaska Association For The Arts

Permafrost

No abstract provided.

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Seasonal Diets Of Mink And Martens: Effects Of Spatial And Temporal Changes In Resource Abundance, Merav Ben-David Apr 1996

Seasonal Diets Of Mink And Martens: Effects Of Spatial And Temporal Changes In Resource Abundance, Merav Ben-David

Theses (Unassigned)

Seasonal changes in food availability and feeding habits of mink (Mustela vison) and martens (Martes americana) on Chichagof Island, Southeast Alaska, were studied through the analysis of natural abundance of stable isotopes. Dependence of the two species on marine-derived nutrients, carried to the terrestrial system via the upstream migration of spawning Pacific salmon (Onchorhynchus sp.), was investigated. Twenty-four mink and 75 martens were live-trapped repeatedly in early summer (prior to salmon runs), early autumn (post salmon runs), late winter, and in spring (during the mating season). A blood sample was obtained from each individual. In addition, 25 mink and 165 …

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Soil Consumption Of Atmospheric Methane: Importance Of Microbial Physiology And Diversity, Jay Michael Gulledge Apr 1996

Soil Consumption Of Atmospheric Methane: Importance Of Microbial Physiology And Diversity, Jay Michael Gulledge

Theses (Unassigned)

Recently, atmospheric CH$\sb4$ concentration has risen dramatically, apparently due to human activities. Since is CH$\sb4$ is involved in several atmospheric processes that regulate Earth's climate, it is important that we understand the factors that control its atmospheric concentration. One such factor is biological CH$\sb4$ consumption in well-drained soils. Although this sink may comprise nearly one-tenth of the annual destruction of atmospheric CH$\sb4$, We know relatively little about it. I conducted a research project to investigate the influences of CH$\sb4$ supply, soil moisture, dissolved salts, and NH$\sb4\sp+$-fertilizer on the activity of soil CH$\sb4$ oxidizers. When starved of CH$\sb4$, two upland taiga …

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Optical Observations Of Critical Ionization Velocity Chemical Releases In The Ionosphere: The Role Of Collisions, Donald Loyd Hampton Apr 1996

Optical Observations Of Critical Ionization Velocity Chemical Releases In The Ionosphere: The Role Of Collisions, Donald Loyd Hampton

Theses (Unassigned)

In recent years researchers have pointed out the importance of collisional processes in ionospheric chemical releases performed to study Alfven's critical ionization velocity effect (CIV). Ionizing collisions, including charge exchange with ambient O$\sp+$ and associative ionization, can not only help initiate CIV, but can also lead to 'contamination' of the ion cloud. Most of the proposed collisions have associated emissions which should be observable with sensitive detectors, but until now have not been attempted since atomic processes had not been considered important. The first four releases of the CRRES satellite were performed to study CIV. The releases were at local …

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Demographic Components Of Philopatry And Nest-Site Fidelity Of Pacific Black Brant, Mark Steven Lindberg Apr 1996

Demographic Components Of Philopatry And Nest-Site Fidelity Of Pacific Black Brant, Mark Steven Lindberg

Theses (Unassigned)

I investigated demographic components of nest-site fidelity and philopatry of Pacific black brant (Branta bernicla nigricans). My analyses included data I collected during summer 1990-1993, and also incorporated data obtained between 1986-1989. My studies of nest-site fidelity were limited to the Tutakoke River colony, Yukon-Kuskokwim River Delta, Alaska. Studies of philopatry and dispersal among colonies included observations at 7 breeding colonies of brant marked with tarsal tags (n = 20,147). I observed strong evidence that philopatry of brant was female biased. Probability of breeding philopatry, which was estimated with multi-state modeling techniques, was high (>0.9) and dispersal of adults …

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Ecological And Physiological Aspects Of Caribou Activity And Responses To Aircraft Overflights, Julie Ann Maier Apr 1996

Ecological And Physiological Aspects Of Caribou Activity And Responses To Aircraft Overflights, Julie Ann Maier

Theses (Unassigned)

I investigated the use of remote-sensing of caribou (Rangifer tarandus) activity to assess disturbance of low-altitude overflights by jet aircraft. Resource management agencies are concerned about the potential effects of these overflights on important species of ungulates. I hypothesized that low-altitude overflights would affect activity and movements of caribou, and thereby constitute a disturbance with negative consequences on energetics. I used caribou of the Delta Herd (DCH) and captive animals at the Large Animal Research Station (LARS) to address the hypotheses: caribou (1) exhibit equal activity day and night; (2) do not time activity to light; and (3) activity patterns …

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Modeling Of The Polar Ionosphere In The Inertial Corotating Frame, Sergei Arkadevich Maurits Apr 1996

Modeling Of The Polar Ionosphere In The Inertial Corotating Frame, Sergei Arkadevich Maurits

Theses (Unassigned)

The ionospheric model presented in this thesis is developed from first principles. It is a three-dimensional and time-dependent model that covers the region poleward from 50 degrees of geographic latitude and extends to the height range of 80-500 km. In this model, equations of continuity, motion, and energy balance are self-consistently solved for the densities of 7 ion species $\lbrack O\sp+(\sp4S,\ \sp2D,\ \sp2P),\ NO\sp+,\ O\sb2\sp+,\ N\sb2\sp+,\ N\sp+\rbrack$ and electrons. The model accounts for 40 photochemical processes, the neutral wind drag with its shear, electromagnetic E $\times$ B-drift, and field-aligned ambipolar diffusion. The background thermospheric parameters here are derived from the …

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The Lectin-Like Properties Of The Extracellular Protein Produced By Pseudomonas Aeruginosa During Hexadecane Degradation, Richard Leland Smith Apr 1996

The Lectin-Like Properties Of The Extracellular Protein Produced By Pseudomonas Aeruginosa During Hexadecane Degradation, Richard Leland Smith

Theses (Unassigned)

Numerous microorganisms can degrade hydrocarbons and many produce extracellular compounds. These compounds are generally thought to emulsify hydrocarbons making them more available to the microorganism and stimulating growth. Pseudomonas aeruginosa produces both a rhamnolipid surfactant and an extracellular protein during growth on n-hexadecane (C$\rm\sb{16}H\sb{34}).$ The protein has been hypothesized to stimulate growth by emulsifying hexadecane. However, it has never been shown that the protein has hydrophobic properties characteristic of emulsifiers. An isolation procedure was developed in this study that produces 20-30 mg of very pure protein per 500 ml culture of strain ATCC 17423. The protein is monomeric with a …

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Plant-Herbivore Interactions On The Yukon-Kuskokwim Delta: The Effect Of Goose Herbivory On Arrowgrass, Christa Pauliene Mulder Apr 1996

Plant-Herbivore Interactions On The Yukon-Kuskokwim Delta: The Effect Of Goose Herbivory On Arrowgrass, Christa Pauliene Mulder

Theses (Unassigned)

I examined effects of herbivory by black brant geese (Branta bernicla nigricans) on the small herbaceous perennial Triglochin palustris (arrowgrass) in a subarctic saltmarsh in SW Alaska. I investigated effects of biomass removal, and indirect effects of geese (changes in resource availability and competition) to compare the role of selective herbivory in this mixed-species environment with that of herbivory in monospecific saltmarsh communities. I manipulated nutrient availability, light availability, and salinity in a transplant experiment, and manipulated size of arrowgrass, and neighbor size and feces deposition in exclosure experiments. Additional experiments examined relationships between size, biomass allocation, survival and reproduction, …

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April 17, 1996, The Daily Mississippian Apr 1996

April 17, 1996, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

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Diet Among Siberian Yup'iks Of Alaska And The Implications For Cardiovascular Disease, Elizabeth Ann Nobmann Apr 1996

Diet Among Siberian Yup'iks Of Alaska And The Implications For Cardiovascular Disease, Elizabeth Ann Nobmann

Biological Sciences

I investigated dietary factors associated with cardiovascular disease and their relation to blood lipids among Siberian Yup'iks. This study was prompted by reports of increasing mortality from cardiovascular disease in Alaska Natives and the need to know to what extent their unique diet may influence cardiovascular disease. Information on dietary intakes was collected in 1992 using two recall methods, from over one-half of the Siberian Yup'ik Eskimos (n = 65) $\geq$40 years-of-age in Gambell, Alaska, as part of a comprehensive screening for diabetes and cardiovascular disease. Based on analysis of 29 nutrients, mean daily intakes of monounsaturated fats and antioxidants--vitamin …

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Defining Arctic Community Sustainability, Stephen Braund, Gary Kofinas Apr 1996

Defining Arctic Community Sustainability, Stephen Braund, Gary Kofinas

ISER Reports

The question of defining sustainability is a subject of much discussion in the literature, with much of it centering on debates regarding the definition of the more controversial term "sustainable development." Part of this discourse has examined questions of the erosion of natural and social capital, the evolution and diversity of institutions, and the dilemmas associated with achieving a balance between economic growth and maintenance of environmental quality. Through our initial discussions, we recognized the legacy of failures associated with non-locals defining criteria of sustainability (and community well being) for northern peoples. We, in turn, responded to this problem by …

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The Red King Crab Fishery: Handling Effects, Bait Efficiency, And Pot Behavior, Shijie Zhou Apr 1996

The Red King Crab Fishery: Handling Effects, Bait Efficiency, And Pot Behavior, Shijie Zhou

Fisheries

Red king crabs (Paralithodes camtschaticus) are caught by pots in a male-only fishery in Alaska. The objectives of this research were: (1) to examine impacts of the commercial fishery on discarded female and sublegal male crabs; (2) to examine bait efficiency; (3) to document crab behavior to pots; and (4) to develop a model describing catch versus soak time. I estimated from observer data that 64.6% of crabs in the Bering Sea fishery were females and sublegal males; I simulated commercial crab handling procedures in the laboratory to test effects on discarded crabs. Although body damage increased significantly with increased …

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Effects Of Oil-Laden Sediments On Behavior And Growth Of Juvenile Flatfishes, Adam D. Moles Apr 1996

Effects Of Oil-Laden Sediments On Behavior And Growth Of Juvenile Flatfishes, Adam D. Moles

Fisheries

Three species of juvenile Pacific flatfishes: yellowfin sole (Pleuronectes asper), rock sole (P. bilineatus), and Pacific halibut (Hippoglossus stenolepis) were exposed to sediments contaminated with Alaska North Slope crude oil to determine the behavior and growth of juveniles in polluted nursery grounds. Responses were correlated with known biomarkers of toxicant exposure. In the behavior experiments, fish exhibited a strong preference for fine grained sediments ($<$500 microns) when presented with eight different sediment types ranging from mud to pebble. Juvenile yellowfin sole showed a preference for mud and mixed mud substrate, rock sole preferred sand substrates and halibut chose both mud and sand sediments. Flatfishes were able to detect and avoid heavily oiled (1400 $\mu$g/g total petroleum hydrocarbons-TPH) sediments but did not avoid sediments at oil concentrations of 400 $\mu$g/g TPH. Among yellowfin sole and rock sole, sediment preference altered behavioral response to oil whereas halibut did or did not avoid oil irrespective of sediment type. If flatfish do not avoid oil concentrations of 1600 $\mu$g/g and higher on preferred sediment, growth reductions occur. Fish reared on oiled sediment grew slower than controls on non-oiled sediments. Growth reductions in all three species were significant following 30 days of exposure to 1600-1800 $\mu$g/g TPH and became more pronounced over time. As the toxicant concentration or the length of exposure increased, growth per day decreased. By 90 days of exposure, fish exposed to 1600-1800 $\mu$g/g TPH grew 38-57% slower than controls. Halibut had the greatest change in growth rate following oil exposure. Exposure of halibut to sand laden with 4700 $\mu$g/g total hydrocarbons resulted in an 93% reduction in growth in 30 days. Condition factor was also most reduced in halibut. Changes in tissues and parasites indicated a reduction in fish health for all three species. There was an increase in fin erosion, liver lipidosis, gill hyperplasia and hypertrophy, and gill ciliate infestation combined with a decline in macrophage aggregates and gut parasites. Chronic marine oil pollution that results in hydrocarbon concentrations of 1600 $\mu$g/g in nursery sediments has the potential to reduce growth and health of juvenile flatfishes. Recruitment of juveniles to the fishery would be reduced due to increased susceptibility to predation and slower growth to maturity.

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The 1993-1994 Surge Of Bering Glacier, Alaska Observed With Satellite Synthetic Aperture Radar, James Joseph Roush Apr 1996

The 1993-1994 Surge Of Bering Glacier, Alaska Observed With Satellite Synthetic Aperture Radar, James Joseph Roush

Geosciences

Sequential synthetic aperture radar (SAR) images acquired by the First European Remote Sensing Satellite (ERS-1) were employed for observation of the 1993-'94 surge of Bering Glacier, Alaska. Evidence of accelerated motion became visible in late April 1993. Subsequently the surge front propagated down-glacier at a mean velocity of 90 m/day between 19 May and 25 August, reaching most of the 34 km perimeter of the terminus by shortly after 25 August. The calving terminus then advanced rapidly into proglacial Vitus Lake at a maximum rate, during 9 August to 18 October, of 19 m/day in its central area. The propagating …

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Dynamics Of A Migratory Fish Population With Applications To The Management Of Sablefish In The Northeast Pacific Ocean, Jonathan Heifetz Apr 1996

Dynamics Of A Migratory Fish Population With Applications To The Management Of Sablefish In The Northeast Pacific Ocean, Jonathan Heifetz

Fisheries

Quantitative models are developed to describe the dynamics of an age-structured migratory fish population subject to exploitation. Migration rates are quantified, alternative ways of apportioning harvest among areas are examined, and the dynamics of a migratory population is described within the general theoretical framework of a projection matrix model. Application of these modeling efforts is within the context of the sablefish (Anoplopoma fimbria) fishery in the North Pacific Ocean. A Markov model that includes natural and fishing mortality, tag reporting and shedding rates, and migration is used to quantify migration rates of tagged sablefish among fishery regulatory areas. Estimates of …

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Montana Kaimin, April 17, 1996, Associated Students Of The University Of Montana Apr 1996

Montana Kaimin, April 17, 1996, Associated Students Of The University Of Montana

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

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Mustang Daily, April 16, 1996 Apr 1996

Mustang Daily, April 16, 1996

Cal Poly Student Newspaper

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

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04-16-96 (The Liberty Champion,Volume 13, Isssue 23) Apr 1996

04-16-96 (The Liberty Champion,Volume 13, Isssue 23)

1995 -- 1996

No abstract provided.

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Spartan Daily, April 16, 1996, San Jose State University, School Of Journalism And Mass Communications Apr 1996

Spartan Daily, April 16, 1996, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 106, Issue 50

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College Voice Vol. 19 No. 22, Connecticut College Apr 1996

College Voice Vol. 19 No. 22, Connecticut College

1995-1996

No abstract provided.

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Phenylbutyl Nitrone Compositions And Methods For Prevention Of Gastric Ulceration, John M. Carney, Robert A. Floyd Apr 1996

Phenylbutyl Nitrone Compositions And Methods For Prevention Of Gastric Ulceration, John M. Carney, Robert A. Floyd

Pharmacology and Nutritional Sciences Faculty Patents

Compositions containing PBN, or active derivatives thereof, in a suitable pharmaceutical carrier for administration to a patient, are disclosed for treating or preventing gastric ulceration caused by ingestion of non-steroidal anti-inflammatories. Based on animal studies, the dosage is in the range of 3 to 300 mg/kg and is administered prior to, simultaneously, or shortly after ingestion of the NSAID compounds(s). In the preferred embodiment, the range is between 10 and 30 mg/kg, depending on the dosage unit required to protect the mucosa. The preferred method of administration is orally, alone or in combination with the non-steroidal anti-inflammatory. It is believed …

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Flyer News, Vol. 43, No. 37 (April 16, 1996), University Of Dayton Apr 1996

Flyer News, Vol. 43, No. 37 (April 16, 1996), University Of Dayton

Flyer News

Student-run newspaper of the University of Dayton

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2,4-Disulfonyl Phenyl Butyl Nitrone, Its Salt And Their Use As Pharmaceuticals, John M. Carney Apr 1996

2,4-Disulfonyl Phenyl Butyl Nitrone, Its Salt And Their Use As Pharmaceuticals, John M. Carney

Pharmacology and Nutritional Sciences Faculty Patents

2,4-disulfonyl α-phenyl-tert-butyl nitrone and its pharmaceutically acceptable salts are disclosed. These materials are useful as pharmaceutical agents for oral or parenteral, e.g. intravenous administration to patients suffering from acute central nervous system oxidation as occurs in a stroke or from gradual central nervous system oxidation which can exhibit itself as progressive central nervous system function loss. The materials are also used to ameliorate the side effects of oxidative-damage causing antineoplastic disease treatments.

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The Spinnaker Vol. 19 No. 30, University Of North Florida Apr 1996

The Spinnaker Vol. 19 No. 30, University Of North Florida

Spinnaker

Student newspaper for the UNF community.

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Central Florida Future, Vol. 28 No. 56, April 16, 1996 Apr 1996

Central Florida Future, Vol. 28 No. 56, April 16, 1996

Central Florida Future

Committee accepts proposal for President's House; Defector lives American Dream at UCF; GLBSU and Mandy Carter celebrate lesbigay awareness week

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The Parthenon, April 16, 1996, Marshall University Apr 1996

The Parthenon, April 16, 1996, Marshall University

The Parthenon

No abstract provided.

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Executive Committee - Agenda, 4/16/1996, Academic Senate Apr 1996

Executive Committee - Agenda, 4/16/1996, Academic Senate

Academic Senate Agendas

No abstract provided.

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Montana Kaimin, April 16, 1996, Associated Students Of The University Of Montana Apr 1996

Montana Kaimin, April 16, 1996, Associated Students Of The University Of Montana

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

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The Bg News April 16, 1996, Bowling Green State University Apr 1996

The Bg News April 16, 1996, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. April 16, 1996. Volume 78-Issue 135.

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