Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 102 for “"toxicants"”.
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Do environmental toxicants target signaling in spermatogonial stem cells?
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-09-17T21:51:23Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Lucas_Benjamin.pdf: 70622856 bytes, checksum: 2fd86bb1981472cfe6384605ec1ee963 (MD5)
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Health disparities, environmental toxicants, and midlife women’s health outcomes
… and increased exposures to environmental toxicants continue to persist in some of the most vulnerable populations including women from racial and minority groups and older populations. Women from urban areas of developed countries tend to carry the heaviest burdens of both occupational, …
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Contemporary toxicants and their effects on female reproductive system
The student, Rachel Braz Arcanjo, submitted this Dissertation for approval on 2021-06-01 at 15:47.
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The effects of environmentally relevant toxicants on female reproduction and embryo development
… Phthalates are classified as reproductive toxicants because have they been shown to impair normal reproduction function in males and females. However, studies have primarily focused on male reproduction. Studies have shown that phthalates are detected in both female reproductive organs and …
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Identification and Screening of Biomarkers of Human Exposure to Environmental and Food Toxicants in Sewage
Pesticides are active substances with potentially adverse effects on human health, and therefore great effort is addressed to study the relation between their widespread use and human exposure. Human biomonitoring (HBM) is the most widely used and powerful tool to evaluate the exposure of the …
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The effect of sublethal concentrations of selected toxicants on the negative phototactic response of Dugesia tigrina
… in the animal's body were affected by the toxicants. It appears that sublethal concentrations of these toxicants have a marked effect on the negative phototactic response of D. tigrina as measured by the crawling speed away from a beam of light. The exact mechanism for reduced crawling …
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Sediment toxicity and bioaccumulation of toxicants in the zebra mussel, Dreissena polymorpha, at Times Beach, Buffalo, New York
This study consisted of a site characterization followed by a biomonitoring study utilizing the zebra mussel, <i>Dreissena polymorpha</i>, at the Times Beach Confined Disposal Facility (CDF), located in Buffalo, New York. Concentrations of the selected contaminants (polycyclic aromatic hydrocarbons …
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Harnessing solar energy: vapor phase polymerized poly(3,4-Ethylenedioxythiophene) for solid state dye-sensitized solar cells and the photodegradation of organic toxicants
<p>Solar energy is the most abundant energy resource available and can be utilized for a variety of applications such as photovoltaics and promote chemical reactions. Dye-sensitized solar cells (DSSCs) are a class of photovoltaic cells that have been well studied for their low cost and …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
… therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and toxicants from mothers to their young during gestation and …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
… therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and toxicants from mothers to their young during gestation and …
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Delivery of Smoke Toxicants from Cigarettes Made in Developed and Developing Countries: a comparison of U.S. full flavor and ultra light brands with Syrian cigarettes
Clinical research is needed to understand how cigarette toxicant yield affects smoker toxicant exposure. While there is much clinical research on yield and exposure in developed countries, there is little in developing countries. Forty smokers completed one, 4-hour session to compare yield and …
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DEVELOPMENT OF MICROBIAL ELECTROCHEMICAL SENSOR FOR TOXICITY SCREENING OF INFLUENT WASTEWATER
… The application of the MES to different kinds of toxicants and their characteristics were studied. Toxic compounds tested included individual heavy metal ions (Cu(II), Zn(II), Pb(II), Cd(II) and Ni(II)), binary mixtures of heavy metals, cyanide and organic chemicals. Both of the electrochemical …
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Ecological studies on:(a) the use of colonisation samplers in relation to biological surveillance of river water quality (b) the requirements of freshwater gastropoda
… that ammonia, nitrite, copper and zinc were the toxicants most likely to be detrimental to gastropods and that P. jenkinsi and Theodoxus fluviatilis were the least tolerant taxa. 96h acute toxicity tests of P. jenkinsi using ammonia and copper were carried out in a flow-through system after a …
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Development of an embryo-larval chronic toxicity test using the sea urchins Tripneustes gratilla and Echinometra mathaei
… the effects of the bioavailable fraction of toxicants in effluents and environmental media, such as water and sediment. Test organisms must be highly sensitive and ecologically relevant. Gametes of the sea urchins Echinometra mathaei and Tripneustes gratilla are used for acute toxicity …
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Development and Standardization of a Short-Term Assay for Evaluating Polluted Estuarine and Coastal Environments: The Medaka Embryo-Larval Assay
… the acute and sublethal impacts of individual toxicants and complex mixtures. The eggs of this Cyprinodont minnow were topically treated with each toxicant or mixture dissolved in membrane permeable dimethylsulfoxide (DMSO) solvent. Nine chemicals were initially evaluated with two, …
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Isolating Antigenotoxic Components and Antioxidants From Commercial Corn Processing by -Products
… up prevention strategies for environmental toxicants. Such research may lead to a future where agricultural crops would be raised for both their pharmaceutical and agronomic value. Opening a new niche in the market will result in increased crop value to producers as well as greater …
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Acute Toxicity of Ammonia and Copper to Mussel (Bivalvia: Unionidae) Glochidia Inside and Outside of Conglutinates
… in water, both in the presence and absence of toxicants. P. occidentalis glochidia survived longer than those of P. sintoxia, but the different conglutinate structures of these species appeared to confer similar protection against the toxicants. This information aids in understanding the …
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Effects of sewage treatment plant effluents on mollusks and fish of the Clinch River in Tazewell County, Virginia
… mono chloramine and unionized ammonia, the major toxicants in domestic STP effiuent. River reaches up to 3.75 km downstream of the STP outfalls at Tazewell and Richlands were depauperate of mussels. Tolerance to effluent seemed to vary among snails, sphaeriid clams, and the Asiatic clam …
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The search for a novel toxicant in Gastrolobium (Fabaceae : Mirbelieae) seed historically associated with toxic native fauna / David E. Peacock.
… the analysis of Gastrolobium seed for possible toxicants which could potentially provide chemical defence compounds for reintroduced fauna.
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