Browsing Department of Biology by Issue Date
Now showing items 1-20 of 64
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Periphyton-nutrient dynamics in a gradient-dominated freshwater marsh ecosystem.
(Wilmington, N.C : Society of Wetland ScientistsOldendorf/Luhe, Germany : Inter-Research, 2005)In this study, the factors influencing the development of a nutrient availability gradient in a wetland ecosystem and the subsequent controls to, and feedbacks from, the structure and function of the periphyton community ... -
Phytoplankton growth model for a turbid pulsed aquatic ecosystem.
(2005)The objective of this study was to develop a computer simulation that successfully predicted chlorophyll-a dynamics in Lake Waco. A small-scale batch culture was used to elucidate intrinsic growth rate and how it was ... -
The response of riparian vegetation to PL-566 flood control structures.
(Baylor University, 2006)In this study, the response of riparian trees to increased stream water availability due to hydrologic alteration by PL-566 dams was investigated through three successive studies. To determine site water balance within a ... -
The recombinant expression of two pollen allergens using plant-viral and yeast expression systems.
(2006-05-09)Allergic disease causes much distress within industrialized areas of the world, affecting approximately a quarter of the population in such areas. Current immunotherapy involves the administration of increasing concentrations ... -
Effects of chiral contaminants to aquatic organisms: pharmaceuticals as model compounds for enantiomer specific ecological hazard assessment.
(Houston, Texas : SETAC Press., 2006-07)In the present study, enantiospecific effects of chiral contaminants were explored using two chiral pharmaceutical contaminants as model compounds. These compounds are the selective serotonin reuptake inhibitor antidepressant ... -
Gamma Hydroxybutyrate (GHB): mechanisms of central nervous system toxicity.
(2006-07-31)Gamma Hydroxybutyrate (GHB) is an endogenous metabolite of gamma-aminobutyric acid (GABA) and a putative neurotransmitter found in mammalian brain. The illicit use of GHB is a growing health care concern in the U.S. Low ... -
Comparing the genetic diversity of late Pleistocene Bison with Modern Bison bison using ancient DNA techniques and the mitochondrial DNA control region.
(2007-01-22)The transition between the Pleistocene and Holocene Epochs brought about a mass extinction of many large mammals. The genetic consequences of such widespread extinctions have not been well studied. Using ancient DNA and ... -
Early periderm development in the shoots of Ulmus alata michx.
(2007-02-14)Periderm is a protective tissue that replaces the epidermis in woody plants and consists of three layers: phellogen, phellem, and phelloderm with cells in discrete radial files. Lenticels and cork wings deviate from this ... -
Anti-tumor properties of CD40 ligand when delivered as a transgene by the conditional replicative oncolytic adenovirus AdEH to breast cancer cells.
(2007-02-14)Cancer-selective biotherapy and gene therapy have been considered to be the next horizon towards developing a cure for breast cancer. CD40 ligand (CD40L), a member of the tumor necrosis factor superfamily, relays critical ... -
Bacterial dynamics at the sediment-water interface of a stratified, eutrophic reservoir.
(2007-03-08)Sediment-water interfaces (SWIs) are loci of dynamic physical, chemical, and biological interactions in stratified, eutrophic reservoirs. Seasonal reservoir mixing and stratification affects SWI physicochemical processes ... -
Analysis of Escherichia coli populations in a large watershed.
(2008-06-10)Escherichia coli are one of the most common model organisms used today. This organism has played an integral role in our understanding of bacterial conjugation, phage genetics, and gene structure, and it is also responsible ... -
The role of spectrin in Drosophila photoreceptor development.
(2008-10-01)Spectrin is a cytoskeletal protein that interacts with the plasma membrane, forming a scaffolding and playing an important role in maintenance of plasma membrane integrity and cytoskeletal structure. In Drosophila, spectrin ... -
The protective effect of α-lipoic acid in doxorubicin induced cardiotoxicity in rats.
(2008-10-02)This study examined the protective effects of α-lipoic acid in rats exposed to a cardiotoxic dose of the widely used chemotherapy agent doxorubicin. α-Lipoic acid significantly enhanced the survival of rats exposed to a ... -
The influence of urbanization on the basking behavior of a Central Texas freshwater turtle community.
(2008-10-15)Urbanization induced landscape modifications can dramatically alter riparian corridor dynamics and the composition of wildlife communities. Urbanized riparian corridors may alter or eliminate suitable freshwater turtle ... -
Chemical toxicity distributions in aquatic toxicology : relative sensitivities of estrogenicity assays and ecotoxicity of parabens in model freshwater organisms.
(2008-12)A probabilistic ecological hazard assessment technique, chemical toxicity distributions, was used to examine the relative sensitivities of in vitro and in vivo assays for detecting estrogenicity, and to assess the hazards ... -
The effect of suspended bentonite and kaolinite clay on phosphorus uptake and release by lotic periphyton.
(Springer.Springer.American Society of Agricultural and Biological Engineers., 2009)Lotic systems act as nutrient buffers to receiving lentic systems. As streams transport allochthonous phosphorus through a watershed, the loads are modified in quantity and quality through biotic and abiotic mechanisms. ... -
Organic matter sources through annual and decadal timescales in a polymictic reservoir.
(Springer, 2009)Phytoplankton productivity and allochthonous organic matter loading fluctuate through various timescales in response to changing environmental conditions. Organic matter compositional shifts can influence ecosystem structure ... -
The functional analysis of NPXY motif in β integrin in vivo.
(2009-03-31)NPXY (Asn-Pro-X-Tyr) is a conserved tyrosine phosphorylation motif that binds to PTB (phospho-tyrosine binding) domain of other protein. Integrins, a heterodimeric cell surface receptor for extracellular matrix (ECM), ... -
Scale dependencies in modeled fire behavior and effects in a southern U.S. grassland ecosystem.
(2010-02-02)FARSITE models were originally developed for the western grass and forests ecosystems thus predictive accuracy as a function of the scale of input data in southern grasslands is relatively unknown. To test predictive ... -
Investigation of the role of ipp-5 and lfe-2 in the IP3 signaling pathway in Caenorhabditis elegans ovulation.
(2010-06-23)C. elegans provides a useful system with which to study signaling pathways, giving information that can be applied to many organisms. The use of RNA interference can be used to study the genes involved in many different ...