Digital Commons Network^™

Cal Poly Magazine, Spring 2007

Cal Poly Magazine

No abstract provided.

Traver Urban Design Plan, Michael Costa

Focus

In the fall quarter of 2006, the third-year Community Design Lab received a grant from the Tulare County to develop an urban design plan for Traver, CA. Michael Costa participated in that studio and writes about the class collaborative efforts and the resulting project.

Animal Science Stock Report: Spring 2007, Animal Science Department, California Polytechnic State University - San Luis Obispo

Stock Report

No abstract provided.

Assessment Of Blood Vessel Mimics With Optical Coherence Tomography, Garret T. Bonnema, Kristen O'Halloran Cardinal, James B. Mcnally, Stuart K. Williams, Jennifer K. Barton

Biomedical Engineering

Optical coherence tomography (OCT) is an imaging mo-dality that enables assessment of tissue structural characteristics. Studies have indicated that OCT is a useful method to assess both blood vessel morphology and the response of a vessel to a deployed stent. We evaluated the ability of OCT to visualize the cellular lining of a tissue-engineered blood vessel mimic (BVM) and the response of this lining to a bare metal stent. We develop a side-firing endoscope that obtains intraluminal, longitudinal scans within the sterile bioreactor environment, enabling time-serial assessment. Seventeen BVMs are imaged with the endoscopic OCT system. The BVMs are then …

March 21, 2007 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

March 21, 2007 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily: Best For Cal Poly 2007, March 16, 2007

Cal Poly Student Newspaper

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

Mustang Daily, March 13, 2007

Cal Poly Student Newspaper

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

Mustang Daily, March 9, 2007

Cal Poly Student Newspaper

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

Mustang Daily, March 5, 2007

Cal Poly Student Newspaper

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

Mustang Daily, March 2, 2007

Cal Poly Student Newspaper

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

Environmental And Genetic Influences On Mating Strategies Along A Replicated Food Availability Gradient In Guppies (Poecilia Reticulata), Gita R. Kolluru, Gregory F. Grether, Heidy Contreras

Biological Sciences

Food availability is expected to influence the relative cost of different mating tactics, but little attention has been paid to this potential source of adaptive geographic variation in behavior. Associations between the frequency of different mating tactics and resource availability could arise because tactic use responds directly to food intake (phenotypic plasticity), because populations exposed to different average levels of food availability have diverged genetically in tactic use, or both. Different populations of guppies (Poecilia reticulata) in Trinidad experience different average levels of food availability. We combined field observations with laboratory “common garden” and diet experiments to examine how this …

Specimens Of The Billfish Xiphiorhynchus Van Beneden, 1871, From The Yazoo Clay Formation (Late Eocene), Louisiana, Harry L. Fierstine, Gary L. Stringer

Biological Sciences

No abstract provided.

Influence Of Swimming Speed On Metabolic Rates Of Juvenile Pacific Bluefin Tuna And Yellowfin Tuna, Jason M. Blank, Charles J. Farwell, Jeffery M. Morrissette, Robert J. Schallert, Barbara A. Block

Biological Sciences

Bluefin tuna are endothermic and have higher temperatures, heart rates, and cardiac outputs than tropical tuna. We hypothesized that the increased cardiovascular capacity to deliver oxygen in bluefin may be associated with the evolution of higher metabolic rates. This study measured the oxygen consumption of juvenile Pacific bluefin Thunnus orientalis and yellowfin tuna Thunnus albacares swimming in a swim-tunnel respirometer at 20°C. Oxygen consumption ( Mo₂) of bluefin (7.1–9.4 kg) ranged from 235 ± 38 mg kg^-1 h^-1 at 0.85 body length (BL) s^-1 to 498 ± 55 mg kg^-1 h^-1 at 1.80 …

A Novel Lux Operon In The Cryptically Bioluminescent Fish Pathogen Vibrio Salmonicida Is Associated With Virulence, Eric J. Nelson, Hege S. Tunsjø, Pat M. Fidopiastis, Henning Sørum, Edward G. Ruby

Biological Sciences

The cold-water-fish pathogen Vibrio salmonicida expresses a functional bacterial luciferase but produces insufficient levels of its aliphatic-aldehyde substrate to be detectably luminous in culture. Our goals were to (i) better explain this cryptic bioluminescence phenotype through molecular characterization of the lux operon and (ii) test whether the bioluminescence gene cluster is associated with virulence. Cloning and sequencing of the V. salmonicida lux operon revealed that homologs of all of the genes required for luminescence are present: luxAB (luciferase) and luxCDE (aliphatic-aldehyde synthesis). The arrangement and sequence of these structural lux genes are conserved compared to those in related species of …

Genome Size Evolution In Relation To Leaf Strategy And Metabolic Rates Revisited, Jeremy M. Beaulieu, Ilia J. Leitch, Charles A. Knight

Biological Sciences

• Background and AimsIt has been proposed that having too much DNA may carry physiological consequences for plants. The strong correlation between DNA content, cell size and cell division rate could lead to predictable morphological variation in plants, including a negative relationship with leaf mass per unit area (LMA). In addition, the possible increased demand for resources in species with high DNA content may have downstream effects on maximal metabolic efficiency, including decreased metabolic rates.

• MethodsTests were made for genome size-dependent variation in LMA and metabolic rates (mass-based photosynthetic rate and dark respiration rate) using our own …

Generalized Mixture Models, Semi-Supervised Learning, And Unknown Class Inference, Samuel J. Frame, Sreenivasa Rao Jammalamadaka

Statistics

In this paper, we discuss generalized mixture models and related semi-supervised learning methods, and show how they can be used to provide explicit methods for unknown class inference. After a brief description of standard mixture modeling and current model-based semi-supervised learning methods, we provide the generalization and discuss its computational implementation using three-stage expectation–maximization algorithm.

Quantitative Regional Associations Between Remodeling, Modeling, And Osteocyte Apoptosis And Density In Rabbit Tibial Midshafts, Nicole L. Hedgecock, Tamer Hadi, Andrew A. Chen, Shane B. Curtiss, R. Bruce Martin, Scott J. Hazelwood

Biomedical Engineering

Evidence suggests that osteocyte apoptosis is involved in the adaptive response of bone, although the specific role of osteocytes in the signaling mechanism is unknown. Here, we examined and correlated regional variability in indices of remodeling, modeling, osteocyte apoptosis, and osteocyte density in rabbit tibia midshafts. Histomorphometric analysis indicated that remodeling parameters (BMU activation frequency, osteon density, forming osteon density, and resorption cavity density) were lower in the cranial region compared to other quadrants. In addition, pericortical subregions displayed less remodeling relative to intracortical and endocortical ones. Modeling indices also demonstrated regional variability in that periosteal surfaces exhibited a greater …

Availability Of Dissolved Organic Matter Offsets Metabolic Costs Of A Protracted Larval Period For Bugula Neritina (Bryozoa), Collin H. Johnson, Dean E. Wendt

Biological Sciences

For nearly a century researchers have investigated the uptake and utilization of dissolved organic matter (DOM) by marine invertebrates, but its contribution to their growth, reproduction, and survival remains unclear. Here, the benefit of DOM uptake was assessed for the marine bryozoan Bugula neritina (Linnaeus 1758) through performance comparisons of individuals in the presence and absence of DOM. The experiments were performed using B. neritina collected from floating docks in Beaufort, NC, USA from July to September 2004. Seawater was subjected to ultraviolet irradiation to reduce naturally occurring DOM, and then enriched with either 1 μM of palmitic acid or …

Mustang Daily, February 19, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 15, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 13, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 12, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 9, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 8, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 7, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 6, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 2, 2007

Cal Poly Student Newspaper

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

Mustang Daily, February 1, 2007

Cal Poly Student Newspaper

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

Mustang Daily, January 29, 2007

Cal Poly Student Newspaper

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