Digital Commons Network^™

A New Auv Platform For Studying Near Shore Bioluminescence Structure, Mark A. Moline, S. Blackwell, J. Case, S. Glenn, J. Kohut, O. Schofield, M. Purcell, C. Vonalt

Biological Sciences

Peaks in bioluminescence are often associated with small spatial features including frontal boundaries, vertical thin-layers, and convergence/divergence zones.^1,2 Due to the highly variable nature of these features in the near shore environment, accurate assessment of bioluminescence potential is dependent upon the application of appropriate platforms and the use of these platforms at relevant time and space scales. Both traditional shipboard profiling techniques and moored vertical profiling instrumentation fail to adequately provide the appropriate spatial resolution to explain the dynamics of near shore bioluminescence. In an effort to resolve the mechanisms underlying the temporal and spatial variation in near shore …

A Mixture Of Elastic Materials With Different Constituent Temperatures And Internal Constraints, Stephen M. Klisch

Mechanical Engineering

A novel treatment of the 2nd Law of Thermodynamics and the development of general thermomechanical constraints are introduced for a mixture of two elastic materials in which the constituents may have different temperatures. First, a homothermal quasi-static process at a common mixture temperature is introduced. Part I of the 2nd Law of Thermodynamics is invoked to assert that the Clausius integrals are path-independent, which leads to a prescription, or an identification, of the partial entropy functions. Then, two assumptions are introduced that establish the values of the partial entropy functions for general processes, including those for which the constituent temperatures …

Mustang Daily, March 15, 2002

Cal Poly Student Newspaper

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

Mustang Daily, March 12, 2002

Cal Poly Student Newspaper

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

Mustang Daily, March 7, 2002

Cal Poly Student Newspaper

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

Mustang Daily, March 5, 2002

Cal Poly Student Newspaper

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

Interspecific- And Acclimation-Induced Variation In Levels Of Heat-Shock Proteins 70 (Hsp70) And 90 (Hsp90) And Heat-Shock Transcription Factor-1 (Hsf1) In Congeneric Marine Snails (Genus Tegula): Implications For Regulation Of Hsp Gene Expression, Lars Tomanek, George N. Somero

Biological Sciences

In our previous studies of heat-shock protein (hsp) expression in congeneric marine gastropods of the genus Tegula, we observed interspecific and acclimation-induced variation in the temperatures at which heat-shock gene expression is induced (T_on). To investigate the factors responsible for these inter- and intraspecific differences in T_on, we tested the predictions of the ‘cellular thermometer’ model for the transcriptional regulation of hsp expression. According to this model, hsps not active in chaperoning unfolded proteins bind to a transcription factor, heat-shock factor-1 (HSF1), thereby reducing the levels of free HSF1 that are available to bind …

Kinetics Of Mn(Ii) Oxidation By Leptothrix Discophora Ss1, Jinghao Zhang, Leonard W. Lion, Yarrow M. Nelson, Michael L. Shuler, William C. Ghiorse

Civil and Environmental Engineering

The kinetics of Mn(II) oxidation by the bacterium Leptothrix discophora SS1 was investigated in this research. Cells were grown in a minimal mineral salts medium in which chemical speciation was well defined. Mn(II) oxidation was observed in a bioreactor under controlled conditions with pH, O>sub>2, and temperature regulation. Mn(II) oxidation experiments were performed at cell concentrations between 24 mg/L and 35 mg/L, over a pH range from 6 to 8.5, between temperatures of 10°C and 40°C, over a dissolved oxygen range of 0 to 8.05 mg/L, and with L. discophora SS1 cells that were grown in the presence …

Mustang Daily, March 1, 2002

Cal Poly Student Newspaper

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

February 27, 2002 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Executive Committee - Agenda, 2/26/2002, Academic Senate

Academic Senate Agendas

No abstract provided.

Plant Establishment With Rainfall Simulators For Erosion Control, Brent Hallock, Steve Rein, Misty Scharff, Michael Curto

Earth and Soil Sciences

Hydroseeding failures on disturbed sites are usually attributable to combinations of improper species selection, seeding at inappropriate times, and/or improper seed mixes, fiber, and tackifier. To investigate these factors, California Polytechnic State University, San Luis Obispo, in conjunction with the California Department of Transportation (Caltrans) and California State University, Sacramento, conducted a study of these factors’ affect on vegetation establishment.

The goal was to identify initially fast growing vegetation that demonstrates long-term erosion control effectiveness. Native plant species common to District 5, along the California Central Coast, were used. Treatments were conducted in 0.6 by 2 m by 30 cm …

A Gis To Select Plant Species For Erosion Control Along California Highways, Michael Curto, Brent Hallock, Misty Scharff

Earth and Soil Sciences

Through road construction and maintenance activities, the California Department of Transportation (Caltrans) actively manages roadside rights-of-way that transect California's 41 million hectares (101 million acres), spanning over 3,000 meters of elevational change from seashore to subalpine. State and federal highways are grouped into 12 districts, each encompassing from one to 11 of the state's 58 counties. District personnel are typically responsible for implementing site-specific adaptations of general statewide guidelines for shortto long-term erosion control following construction or storm damage. Many erosion control projects involve reestablishing vegetation through seeding where the precarious life stages of germination and establishment are controlled by …

Integrating Symbol-Oriented And Sub-Symbolic Reasoning Methods Into Hybrid Systems, Franz J. Kurfess

Computer Science and Software Engineering

Knowledge representation and reasoning methods in artificial intelligence almost exclusively rely on symbol-oriented methods: Statements describing aspects and objects of the system to be modeled are represented through symbols (mostly text strings), and these symbols are stored in a computer, and manipulated according to the inference rules prescribed by the reasoning method. This works reasonably well in situations where knowledge is available in explicit form, typically through experts or written documents. In situations where knowledge is only available implicitly, e.g. in large data sets, other methods, often based on statistical approaches, have been used more successfully. Many of these methods …

Mustang Daily, February 22, 2002

Cal Poly Student Newspaper

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

Mustang Daily, February 21, 2002

Cal Poly Student Newspaper

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

Author Stephen Jay Gould To Speak At Science And Technology Forum, Public Affairs Office

Press Releases

No abstract provided.

February 20, 2002 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, February 13, 2002

Cal Poly Student Newspaper

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

Cal Poly Forums Honor Warren, Carly Baker; Experts To Discuss Future Of Polytechnic, Science And Tech Universities, Public Affairs Office

Press Releases

No abstract provided.

Mustang Daily, February 8, 2002

Cal Poly Student Newspaper

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

Mustang Daily, February 7, 2002

Cal Poly Student Newspaper

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

Mustang Daily, February 5, 2002

Cal Poly Student Newspaper

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

Mustang Daily, February 4, 2002

Cal Poly Student Newspaper

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

Occam's Razor & The Nature Of Scientific Theories, William D. Stansfield

Biological Sciences

No abstract provided.

A Biomechanical Comparison Of Three Sternotomy Closure Techniques, David J. Cohen, Lanny V. Griffin

Biomedical Engineering

Background. A biomechanical study of three sternotomy closuretechniques (figure-of-eight stainless-steel wires, PectofixDynamic Sternal Fixation [DSF] stainless-steel plates, and figure-of-eightstainless-steel cables) was conducted to compare strength andstiffness variables in three clinically relevant loading modes(anterior-posterior shear, longitudinal shear, and lateral distraction).

Methods. All tests were conducted on polyurethane foam sternalmodels that simulate the properties of cancellous bone. Eachmodel was divided longitudinally and reconstructed using oneof the sternotomy closure repair techniques. Tests were performedusing a materials testing system that applies a continuouslyincreasing amount of force in one direction to the model untilit catastrophically breaks. A total of six trials of each …

An Ecological And Evolutionary Analysis Of Photosynthetic Thermotolerance Using The Temperature-Dependent Increase In Fluorescence, Charles A. Knight, David D. Ackerly

Biological Sciences

The hypothesis that species inhabiting warmer regions have greater photosynthetic tolerance of high temperatures was tested using the temperature-dependent increase in fluorescence (T-F_o). Congeneric species pairs of Atriplex, Salvia, Encelia, and Eriogonum with desert versus coastal distributions were studied in a common environment and in the field. In addition, 21 species with contrasting microclimate distributions were studied at a field site in a northern California chaparral community. The average July maximum temperature within the current distributions of species was quantified using a geographic information system. Four parameters (T_crit, T_S20, …

Leaf Size, Specific Leaf Area And Microhabitat Distribution Of Chaparral Woody Plants: Contrasting Patterns In Species Level And Community Level Analyses, D. D. Ackerly, Charles A. Knight, S. B. Weiss, K. Barton, K. P. Starmer

Biological Sciences

We examined variation in leaf size and specific leaf area (SLA) in relation to the distribution of 22 chaparral shrub species on small-scale gradients of aspect and elevation. Potential incident solar radiation (insolation) was estimated from a geographic information system to quantify microclimate affinities of these species across north- and south-facing slopes. At the community level, leaf size and SLA both declined with increasing insolation, based on average trait values for the species found in plots along the gradient. However, leaf size and SLA were not significantly correlated across species, suggesting that these two traits are decoupled and associated with …

Mustang Daily, January 31, 2002

Cal Poly Student Newspaper

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

Mustang Daily, January 30, 2002

Cal Poly Student Newspaper

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