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Articles 3841 - 3870 of 8069
Full-Text Articles in Entire DC Network
Slow, Fast And In Between: Habitat Distribution And Behaviour Of Larvae In Nine Species Of Libellulid Dragonfly, Shannon J. Mccauley
Slow, Fast And In Between: Habitat Distribution And Behaviour Of Larvae In Nine Species Of Libellulid Dragonfly, Shannon J. Mccauley
Biological Sciences
1. Activity and microhabitat use are important factors determining species performance in habitats that differ in permanence and species composition of top predators. This study examined the relationship between the distribution across a gradient of habitat permanence and an associated transition in the composition of top predators and the behaviour of species of larval dragonflies. It also assessed the relationship between larval behaviour, body size and the duration of the larval stage. In laboratory mesocosms the mobility of the different species was measured, as was the extent to which they associated with artificial vegetation. 2. Species mobility was positively related …
Molecular Cloning And Sequence Analysis Of Multiple Cdna Variants For Thyroid-Stimulating Hormone Β Subunit (Tshβ) In The Fathead Minnow (Pimephales Promelas), Sean C. Lema, Jon T. Dickey, Penny Swanson
Molecular Cloning And Sequence Analysis Of Multiple Cdna Variants For Thyroid-Stimulating Hormone Β Subunit (Tshβ) In The Fathead Minnow (Pimephales Promelas), Sean C. Lema, Jon T. Dickey, Penny Swanson
Biological Sciences
We cloned and sequenced full-length cDNAs encoding the β subunit of thyroid-stimulating hormone (TSHβ) from the pituitary of fathead minnow (Piephales promelas)using 5'-and 3'-rapid amplification of cDNA ends (RACE). Three cDNA variants for TSHβ with lengths of 1184-, 1093-, and 818-bp were identified. The cDNA variant of 1184-bp included 453-bp of open-reading frame and 610-bp of 3' UTR followed by a poly(A)site. This cDNA encodes 150 amino acids including a 19 residue signal peptide and a mature TSHβ protein of 131 residues with sequence identities of 97–53% to other fishes and 42–39% to mammals. The 1093-bp cDNA variant …
Correlated Evolution Of Genome Size And Cell Volume In Diatoms (Bacillariophyceae), Jessica A. Connolly, Matthew J. Oliver, Jeremy M. Beaulieu, Charles A. Knight, Lars Tomanek, Mark A. Moline
Correlated Evolution Of Genome Size And Cell Volume In Diatoms (Bacillariophyceae), Jessica A. Connolly, Matthew J. Oliver, Jeremy M. Beaulieu, Charles A. Knight, Lars Tomanek, Mark A. Moline
Biological Sciences
A correlation between genome size and cell volume has been observed across diverse assemblages of eukaryotes. We examined this relationship in diatoms (Bacillariophyceae), a phylum in which cell volume is of critical ecological and biogeochemical importance. In addition to testing whether there is a predictive relationship across extant species, we tested whether evolutionary divergences in genome size were correlated with evolutionary divergences in cell size (using independent contrasts). We estimated total DNA content for 16 diatom species using a flow cytometer and estimated cell volumes using critical dimensions with scaling equations. Our independent contrast analyses indicated a significant correlated evolution …
Sub-Kilometer Length Scales In Coastal Waters, Shelley M. Blackwell, Mark A. Moline, Andrew Schaffner, Thomas Garrison, Grace Chang
Sub-Kilometer Length Scales In Coastal Waters, Shelley M. Blackwell, Mark A. Moline, Andrew Schaffner, Thomas Garrison, Grace Chang
Biological Sciences
Patchiness or spatial variability is ubiquitous in marine systems. With increasing anthropogenic impacts to coastal resources and coastal systems being disproportionately large contributors to ocean productivity, identifying the spatial scales of this patchiness, particularly in coastal waters, is of critical importance to understand coastal ecosystem dynamics. The current work focuses on fine scale structure in three coastal regions. More specifically, we utilize variogram analyses to identify sub-kilometer scales of variability in biological and physical parameters measured by an autonomous underwater vehicle (AUV) in the Mid-Atlantic Bight, Monterey Bay, and in San Luis Obispo Bay between 2001 and 2004. Critical scales …
Mustang Daily, January 31, 2008
Mustang Daily, January 31, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, January 30, 2008
Mustang Daily, January 30, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Executive Committee - Agenda, 1/29/2008, Academic Senate
Executive Committee - Agenda, 1/29/2008, Academic Senate
Academic Senate Agendas
No abstract provided.
Mustang Daily, January 28, 2008
Mustang Daily, January 28, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, January 25, 2008
Mustang Daily, January 25, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, January 24, 2008
Mustang Daily, January 24, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Academic Senate - Agenda, 1/22/2008, Academic Senate
Academic Senate - Agenda, 1/22/2008, Academic Senate
Academic Senate Agendas
No abstract provided.
Mustang Daily, January 15, 2008
Mustang Daily, January 15, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, January 14, 2008
Mustang Daily, January 14, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
January 09, 2008 Cal Poly Report, Public Affairs Office
January 09, 2008 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
January 9, 2008 Cal Poly Report, Public Affairs Office
January 9, 2008 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Cal Poly Biology Professor And Students Discover Record Tree In Poly Canyon, Public Affairs Office
Cal Poly Biology Professor And Students Discover Record Tree In Poly Canyon, Public Affairs Office
Press Releases
No abstract provided.
Mustang Daily, January 8, 2008
Mustang Daily, January 8, 2008
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Executive Committee - Agenda, 1/8/2008, Academic Senate
Executive Committee - Agenda, 1/8/2008, Academic Senate
Academic Senate Agendas
No abstract provided.
Radiometric Clocks, Gary B. Hughes
Radiometric Clocks, Gary B. Hughes
Statistics
This paper provides and introduction to radioactivity, and how geologists exploit radioactive decay to determine the age of rocks.
A Journey Through The Scott Creek Watershed, James A. West
A Journey Through The Scott Creek Watershed, James A. West
Academic, Government & Associated Organizational Research Resources
This PDF contains content captured from: West, James. A Journey Through the Scott Creek Watershed, https://swanton.ucscarboretum.org/index.html. Accessed 9 July 2020. The website was created for the University of California Santa Cruz Arboretum and Botanic Garden. It serves as the beginnings and provides a basic outline of the content within "Traversing Swanton Road," an essay by James A. West. A most recent version of the essay can be found at https://digitalcommons.calpoly.edu/spr_assocres/1/
Cal Poly Honors Undergraduate Research Journal 2008, University Honors Program
Cal Poly Honors Undergraduate Research Journal 2008, University Honors Program
Honors Undergraduate Research Journal
No abstract provided.
Proposals Submitted In Fiscal Year 2008, Grants Development Office
Proposals Submitted In Fiscal Year 2008, Grants Development Office
Grants Development Office Reports
No abstract provided.
Simulated Effects Of Various Environmental Management Practices On Energy Consumption In Open And Confined Greenhouse Systems, Ilhami Yildiz, D. P. Stombaugh
Simulated Effects Of Various Environmental Management Practices On Energy Consumption In Open And Confined Greenhouse Systems, Ilhami Yildiz, D. P. Stombaugh
BioResource and Agricultural Engineering
The objective of this study was to evaluate the effects of relative humidity, light management levels, minimum ventilation rates, CO2 enrichment and canopy size on energy consumption in three different greenhouse systems (conventional, open-loop heat pump, and confined heat pump) in winter, spring, and summer months. No difference was observed in energy consumption with relative humidity set point levels in winter due to the already low relative humidity levels. Some differences were observed in spring and summer due to extra dehumidification required to maintain the inside relative humidity at lower levels. Energy consumption in summer was reduced up to …
Metacommunity Patterns In Larval Odonates, Shannon J. Mccauley, Christopher J. Davis, Rick A. Relyea, Kerry L. Yurewicz, David K. Skelly, Earl E. Werner
Metacommunity Patterns In Larval Odonates, Shannon J. Mccauley, Christopher J. Davis, Rick A. Relyea, Kerry L. Yurewicz, David K. Skelly, Earl E. Werner
Biological Sciences
The growth of metacommunity ecology as a subdiscipline has increased interest in how processes at different spatial scales structure communities. However, there is still a significant knowledge gap with respect to relating the action of niche-and dispersal-assembly mechanisms to observed species distributions across gradients. Surveys of the larval dragonfly community (Odonata: Anisoptera) in 57 lakes and ponds in southeast Michigan were used to evaluate hypotheses about the processes regulating community structure in this system. We considered the roles of both niche- and dispersal-assembly processes in determining patterns of species richness and composition across a habitat gradient involving changes in the …
Predator Induction Of Spine Length In Larval Leucorrhinia Intacta (Odonata), Shannon Mccauley, Christopher J. Davis, Earl E. Werner
Predator Induction Of Spine Length In Larval Leucorrhinia Intacta (Odonata), Shannon Mccauley, Christopher J. Davis, Earl E. Werner
Biological Sciences
Questions: Do larvae of a dragonfly with a broad habitat distribution have longer abdominal spines when they co-exist with fish, and are these differences the result of phenotypic plasticity?
Hypothesis: Phenotypic plasticity will result in larvae having longer spines when they are exposed to cues from predatory fish.
Organism: Larvae of Leucorrhinia intacta (Odonata: Libellulidae).
Research site: Natural ponds and cattle tanks on the E.S. George Reserve in southeast Michigan.
Methods: We compared the morphology of larvae collected from two natural ponds before and after a drought resulted in the extirpation of fish from one pond. We also compared …
Grants And Contracts Awarded In Fiscal Year 2008, Grants Development Office
Grants And Contracts Awarded In Fiscal Year 2008, Grants Development Office
Grants Development Office Reports
No abstract provided.
Creationism, Catastrophism, And Velikovsky, William D. Stansfield
Creationism, Catastrophism, And Velikovsky, William D. Stansfield
Biological Sciences
No abstract provided.
Improving Knowledge Retention In A Technical Subject By Diversifying The Learning Experience, Lubomir Stanchev
Improving Knowledge Retention In A Technical Subject By Diversifying The Learning Experience, Lubomir Stanchev
Computer Science and Software Engineering
There is no silver bullet when it comes to successful teaching. Some scholars believe that traditional lectures are the panacea, while others are firm believers in active and cooperative learning. In this paper I report on my experience with the two approaches and explore the idea of combining them. In particular, I will argue that diversifying the avenues in which students are exposed to knowledge in a technical discipline, such as computer science, can spark their enthusiasm and make the learning experience more enjoyable and productive.
Flash: A Rapid Method For Prototyping Paper-Based Microfluidic Devices, Andres W. Martinez, Scott T. Phillips, Benjamin J. Wiley, Malancha Gupta, George M. Whitesides
Flash: A Rapid Method For Prototyping Paper-Based Microfluidic Devices, Andres W. Martinez, Scott T. Phillips, Benjamin J. Wiley, Malancha Gupta, George M. Whitesides
Chemistry and Biochemistry
This article describes FLASH (Fast Lithographic Activation of Sheets), a rapid method for laboratory prototyping of microfluidic devices in paper. Paper-based microfluidic devices are emerging as a new technology for applications in diagnostics for the developing world, where low cost and simplicity are essential. FLASH is based on photolithography, but requires only a UV lamp and a hotplate; no clean-room or special facilities are required (FLASH patterning can even be performed in sunlight if a UV lamp and hotplate are unavailable). The method provides channels in paper with dimensions as small as 200 μm in width and 70 μm in …
Development Theory And Domestic Agriculture In The Caribbean: Recurring Crises And Missed Opportunities, Benjamin F. Timms
Development Theory And Domestic Agriculture In The Caribbean: Recurring Crises And Missed Opportunities, Benjamin F. Timms
Social Sciences
Caribbean development theory has long advanced a break from economic reliance on single crop exports through the promotion of domestic agriculture. Yet today the domestic agriculture sector in much of the Caribbean is underdeveloped, as the rising food import bill attests. This paper examines the historical views on domestic agriculture by development theorists with a focus on how recurring economic crises have created opportunities to advance domestic agricultural production. While internal and external forces have thwarted many of these efforts, the current global food crises may provide a sustained incentive to overcome the structural legacy of the plantation economy through …