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Full-Text Articles in Biochemistry, Biophysics, and Structural Biology

Developmental And Functional Analysis Of Scutes In The Armored Catfish Corydoras Aeneus, Emily Volk Jan 2019

Developmental And Functional Analysis Of Scutes In The Armored Catfish Corydoras Aeneus, Emily Volk

Undergraduate Honors Theses

Fish scales are specialized biological structures of current interest in innovative materials design because of the combination of protective function, flexibility, and light weight they offer. This study presents a developmental and functional investigation of a particular fish scale structure, the scutes (bony external plates) of the armored Bronze Corydoras Catfish (Corydoras aeneus). Scutes in this model fish species were analyzed via three complementary approaches. First, scutes were documented throughout fish development via high-quality microscope images. These images were subsequently used to inform fabrication of synthetic models to characterize the relationship between scute overlap and overall bending stiffness of scute ...


Effects Of Mound Nests Of The Ant Formica Podzolica On Soil Moisture, Nitrogen, And Vegetation, Madison Sankovitz Jan 2017

Effects Of Mound Nests Of The Ant Formica Podzolica On Soil Moisture, Nitrogen, And Vegetation, Madison Sankovitz

Undergraduate Honors Theses

Ants are widely regarded as ‘ecosystem engineers’ because they change the biological, chemical, and physical properties of the soil around their nests through nest construction and contributions to nutrient cycling. These processes were investigated in a species of alpine ant, Formica podzolica, to quantify its effects on soil structure and vegetation composition in an alpine ecosystem in Nederland, Colorado. Measurements of vegetation percent cover, biomass, species diversity and abundance, soil moisture and pH, and 15N in plants were taken at various distances from nests. A stable isotope analysis was utilized to determine the amount of 15N in vegetation ...


The Dietary Ecology Of Ring-Tailed Lemurs As Reflected By Δ13c And Δ15n Stable Isotope Values, Kristin Lilla Schwagerl Apr 2015

The Dietary Ecology Of Ring-Tailed Lemurs As Reflected By Δ13c And Δ15n Stable Isotope Values, Kristin Lilla Schwagerl

Anthropology Graduate Theses & Dissertations

Madagascar is one of the top global hotspots for biodiversity (Yoder & Nowak, 2006). Yet it is experiencing high rates of habitat loss, especially gallery forest, an important resource to many endemic primate species (Sauther et al., 1999; Sussman & Rakotozafy, 1994). Natural disasters such as Madagascar's cyclical droughts and cyclones may compound the effects of habitat loss (Gould et al., 1999; Whitelaw, 2010; Wright, 1999). Changes in dietary ecology as a result of these events may be reflected in altered hair δ13C and δ15N values from the study population. By studying how lemurs respond to cyclone and drought habitat disturbance, researchers can better understand how forest destruction and non-native species introduction by humans might impact the ability of lemurs to effectively react for continued survival.

This study looks at the effects of habitat disturbance on four endemic Malagasy ring-tailed lemur troops via stable carbon and ...


Nanoscale Reagents For The Detection And Treatment Of Tuberculosis In Resource Limited Regions, Candice Ashley Smith Jan 2015

Nanoscale Reagents For The Detection And Treatment Of Tuberculosis In Resource Limited Regions, Candice Ashley Smith

Chemistry & Biochemistry Graduate Theses & Dissertations (1986-2018)

Tuberculosis (TB) remains the second deadliest infectious disease after HIV/AIDS. TB most stubbornly has been spreading in resource limited regions. People in these regions need diagnostics and therapeutics tailored to their available resources. Developing countries would best benefit from a diagnostic that is robust, gives quick results, and requires minimal electricity or materials. Likewise, a high impact therapeutic for these communities would promote patient compliance through oral administration and low toxicity. In this thesis work, these challenges are confronted by development of an orally bioavailable gold nanoparticle platform, a surface enhanced Raman spectroscopy assay for the detection of an ...