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- <p>Metals -- Dissolution<br />Nanoparticles -- Toxicology<br />Nanoparticles<br />Nanotechnology<br />Transition metal oxides</p> (1)
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Articles 1 - 19 of 19
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Laboratory And Field Performance Of The Biosand Point Of Use Water Filtration System In The Artibonite Valley, Haiti, Andrew John Sisson
Laboratory And Field Performance Of The Biosand Point Of Use Water Filtration System In The Artibonite Valley, Haiti, Andrew John Sisson
Masters Theses
The research presented here is summary two years of studying the Biosand filter (BSF) both in Haiti during March 2011 and in the laboratory. In Chapter 2, we examined the long term use and sustainability 55 BSF systems near Deschapelles, Haiti and 47% were found to be no longer in use. Interviews with BSF owners revealed problems related to intermittent filter use. A review of 17 BSF field studies also was included to compare and substantiate observations made in Haiti. Together, previous field studies and our observations point toward the importance of providing culturally appropriate technologies and education materials explaining …
The Rise And Fall Of Kin Structure In The Neotropical, Family-Living Buff-Breasted Wren (Cantorchilus Leucotis) In Gamboa, Panama, Sarah C. Alessi
The Rise And Fall Of Kin Structure In The Neotropical, Family-Living Buff-Breasted Wren (Cantorchilus Leucotis) In Gamboa, Panama, Sarah C. Alessi
Masters Theses
Family-living species provide an exciting model to examine how natal dispersal and kin structure influence genetic structuring within local populations. Juvenile buff-breasted wrens (Cantorchilus leucotis) of both sexes delay dispersal and exhibit short-distance natal dispersal, which should lead to kin-structured populations in which relatives of both sexes occupy neighboring territories. Blood samples collected from juvenile and adult wrens in Gamboa, Panama were analyzed using microsatellite markers to determine whether related individuals are spatially clustered on neighboring territories, spatial clusters of relatives change over time, and if kin structure is sex-specific. Global and local spatial autocorrelation analyses detected genetic …
Demographics And Seasonal Abundance Of Sportfish In Three Thermal Habitats Of Coffeen Lake, Anthony Paul Porreca
Demographics And Seasonal Abundance Of Sportfish In Three Thermal Habitats Of Coffeen Lake, Anthony Paul Porreca
Masters Theses
No abstract provided.
Geographic Variation In The Lower Temperature Tolerance In The Invasive Brown Anole, Anolis Sagrei And The Native Green Anole, Anolis Carolinensis (Sauria: Polychrotidae), Laura Carolina Maria Rubio
Geographic Variation In The Lower Temperature Tolerance In The Invasive Brown Anole, Anolis Sagrei And The Native Green Anole, Anolis Carolinensis (Sauria: Polychrotidae), Laura Carolina Maria Rubio
Masters Theses
Invasive species are considered to be the second greatest threat to native biodiversity and several factors have been identified as contributing to the success of introduced species, including their initial genetic variation and the ability of populations to adapt to a new environment. Temperature has a significant impact on reptilian ecology and distribution since they ordinarily rely on external heat sources for the maintenance of body temperatures suitable for normal activity. Body temperature affects performance in these organisms given its importance for all aspects of behavior, locomotion, courtship and rates of feeding and growth. Critical thermal tolerances can, therefore, give …
Origin Of Great Lakes Brown Trout, Salmo Trutta: A Phylogeographic Analysis Using Mtdna Sequence Variation, David Baisch
Origin Of Great Lakes Brown Trout, Salmo Trutta: A Phylogeographic Analysis Using Mtdna Sequence Variation, David Baisch
Masters Theses
The brown trout, Salmo trutta, was first introduced to the Laurentian Great Lakes in 1887 from European broodstocks to found a recreational salmonid fishery; however, the origins of these progenitor lineages remain largely unknown. Trout from these regions are very specialized to their native habitats and matching North American stocks to similar watersheds may help increase survivability by introducing the stock to a more appropriate environment. The objective of this study was to determine the European origins of brown trout found in the Great Lakes. We analyzed 144 brown trout from ten watersheds across Michigan and Wisconsin and identified …
Winter Habitat Selection And Genetic Relatedness Of Southern Flying Squirrels In Southwest Michigan, Sheila M. Miara
Winter Habitat Selection And Genetic Relatedness Of Southern Flying Squirrels In Southwest Michigan, Sheila M. Miara
Masters Theses
Few studies have examined winter habitat selection for southern flying squirrels (Glaucomys volans) in northern latitudes where winter conditions are harsher than southern latitudes and resource availability is particularly limiting. Winter den tree characteristics and use by 19 southern flying squirrels (10 females and 9 males) were investigated from November through February in 2010-2011 and 2011-2012. The mean home range size using 100% minimum convex polygon for 18 individuals was 3.40 ha (±0.46 0.46 SE) and there was no significant difference between genders (P= 0.56) or ages (P=0.50). The mean 95% fixed kernel home range size was 0.15 …
Mating System Biology Of The Florida Native Plant: Illicium Parviflorum, Nicholas Earl Buckley
Mating System Biology Of The Florida Native Plant: Illicium Parviflorum, Nicholas Earl Buckley
Masters Theses
Self-incompatibility is thought to have played a profound role in the evolution of the angiosperms. However, there is little evidence of self-incompatibility systems in early diverging lineages of flowering plants. Illicium parviflorum, one such early-divergent angiosperm, is an evergreen perennial species endemic to central Florida, particularly within the Ocala National Forest. Although locally abundant, I. parviflorum is currently listed as endangered at the state level due to being under constant threat of habitat disturbance and over-harvesting. Notably, this species had been described as self-incompatible due to its low seed-set. However, low seed set may also be a result of …
Effects Of Ailanthus Altissima Soil Leachates On Nodulation And Expression Of Two Genes That Regulate Nodulation Of Trifolium Pratense, Jesse Michael Lincoln
Effects Of Ailanthus Altissima Soil Leachates On Nodulation And Expression Of Two Genes That Regulate Nodulation Of Trifolium Pratense, Jesse Michael Lincoln
Masters Theses
Ailanthus altissima (Simaroubaceae) is an invasive tree from China that has spread over much of North America. A number of characteristics contribute to its success, notably tolerance of nutrient-poor soils, rapid growth rates, prolific production of wind dispersed seeds, escape from predation, and the production of allelopathic compounds. That Ailanthus altissima frequently co-occurs with legumes in nutrient poor soils alludes to a possible relationship between Ailanthus altissima and nitrogen fixing legumes. Legumes increase the biospheres supply of bio-available nitrogen through facilitating the fixation of atmospheric nitrogen within structures on roots called nodules. Thus, increased nodulation of legumes caused by Ailanthus …
Bioavailability, Bioaccumulation, And Trophic Transfer Of Trace Metals In The Tims Branch-Steed Pond Tributary, Paul Gethyn Edwards
Bioavailability, Bioaccumulation, And Trophic Transfer Of Trace Metals In The Tims Branch-Steed Pond Tributary, Paul Gethyn Edwards
Masters Theses
The Department of Energy's (DOE) Savannah River Site (SRS) is a 777 km2 former nuclear weapon material production and current research facility located along the Savannah River in west-central South Carolina. In 1954, direct environmental discharges were released from "M-Area", a fuel and aluminum-clad Uranium (U) nuclear reactor target manufacturing facility through a drainage ditch into the Tims Branch-Steed Pond water system. The wastewater discharges released into Tims Branch contained large volumes of inorganic wastes including depleted and natural U, aluminum (Al), and Nickel (Ni) along with smaller quantities of mercury (Hg), lead (Pb), copper (Cu), chromium (Cr), and …
Analysis Of A Wound-Induced Gene Family In Glycine Max, Gena Robertson
Analysis Of A Wound-Induced Gene Family In Glycine Max, Gena Robertson
Masters Theses
Gene families in plants are important in understanding genome evolution indicating when and where genome duplications and segmental duplications occurred as well as subsequent divergence and subfunctionalization. A gene family in Glycine max that encodes a WI12 protein, wound-induced protein, was found to consist of ten genes on five chromosomes. Wound-induced proteins are activated in response to wounding in plants, and the WI12 protein in particular is thought to be involved in cell wall modifications at the wound site. A variety of bioinformatics tools have been used to analyze the expansion of this family in soybean as well as identify …
Population Demographics Of White Crappie In Three Illinois Reservoirs, Candice Marie Miller
Population Demographics Of White Crappie In Three Illinois Reservoirs, Candice Marie Miller
Masters Theses
No abstract provided.
Physiochemical Characteristics Contributing To The Cytotoxicity Of Transition Metal Oxides, Chi-Heng Wu
Physiochemical Characteristics Contributing To The Cytotoxicity Of Transition Metal Oxides, Chi-Heng Wu
Masters Theses
"In the past ten years nanotechnology has not only evolved to play a prominent role in our economy but also increased the concern over potential adverse effects caused by nanomaterials to human health and the environment. Nanotoxicity is to understand the nature and origin of the toxicity imposed by nanomaterials. Studies from our laboratory have shown that nanoparticle induces oxidative stress, perturbs calcium homeostasis, alter gene expression, and produces pro-inflammatory responses. We also identified a trend of toxicity: TiO₂ < Cr₂O₃ < Fe₂O₃ < Mn₂O₃ < NiO < ZnO < CuO. We then asked a question: what are physiochemical factors of transition metal nanoparticles that contributed to this increasing cytotoxicity. In this thesis I investigated the correlation between physicochemical properties and toxicity of the transition metal oxides in the 4th Period of the Periodic Table of Elements. Particle size, BET surface area, point of zero charge, metal dissolution, and degree of surface adsorption of transition metal oxide nanoparticles were measured. There were no increasing trends in both particle size and specific surface area. The point of zero charge showed an increasing trend as TiO₂ < Cr₂O₃ < Fe₂O₃ < NiO < CuO = ZnO < Mn₂O₃. The number of available binding sites of nanoparticle showed an increasing trend as Cr₂O₃ > ZnO > CuO > NiO > Fe₂O₃ > Mn₂O₃ > TiO₂. The degree of adsorption on the surface of nanoparticles showed an increasing trend with atomic …
In Vivo Evaluation Of Microfibrous Bioactive Borate Glasses For Use In Wound Healing, Yinan Lin
In Vivo Evaluation Of Microfibrous Bioactive Borate Glasses For Use In Wound Healing, Yinan Lin
Masters Theses
"This project consisted of two parts focused on in vivo evaluation of microfibrous bioactive borate glasses for use in wound healing. Part one of the project involved subcutaneous implantation of two types of borate glass microfibers and 45S5 glass micro fibers in the dorsum of rats and histologically evaluating the soft tissues at the implant sites at 2 to 4 weeks post surgery. The primary objective was to assess the angiogenic response to the implanted materials. The 13-93B3 and 13-93B3Cu glass microfibers were found to significantly increase the microvascular density in soft tissue, an outcome that suggests these simple and …
Comparison Of Silver Carp Population Demographics In An Impounded And A Free Flowing River, Jason G. Stuck
Comparison Of Silver Carp Population Demographics In An Impounded And A Free Flowing River, Jason G. Stuck
Masters Theses
No abstract provided.
Effect Of Reservoir Discharge And Sanitary Effluent On An Urban Stream, Daniel Hiatt
Effect Of Reservoir Discharge And Sanitary Effluent On An Urban Stream, Daniel Hiatt
Masters Theses
No abstract provided.
Whatchu Breathin'?: Sick Building Syndrome And Seasonal Occurrence Of Fungi, Jessica Stapleton
Whatchu Breathin'?: Sick Building Syndrome And Seasonal Occurrence Of Fungi, Jessica Stapleton
Masters Theses
No abstract provided.
Egg Recognition And Cowbird Egg Ejection Behavior In The American Robin (Turdus Migratorius), Allison Karlien Lang
Egg Recognition And Cowbird Egg Ejection Behavior In The American Robin (Turdus Migratorius), Allison Karlien Lang
Masters Theses
No abstract provided.
Feeding Behavior Of Nestling Eastern Bluebirds (Sialia Sialis) In East-Central Illinois, Amanda Lamb
Feeding Behavior Of Nestling Eastern Bluebirds (Sialia Sialis) In East-Central Illinois, Amanda Lamb
Masters Theses
No abstract provided.
Linking The Colonization Rate Of Vesicular Arbuscular Mycorrhizae (Vam) To Species Dynamics In Succession, Jie Luo
Masters Theses
No abstract provided.