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 86 for “"TNT"”.
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TNT-contaminated soils remediation for volunteer Army ammunitions plant
… the production and storage of trinitrotoluene (TNT). Two (2) technologies were investigated for TNT (nitroaromatic explosive) contaminated soils remediation. The technologies are phytoremediation and thermal incineration. Phytoremediation is an in-site wetlands-type remediation which uses …
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The Role of Glutathione Transferases in the Detoxification of TNT
… disposal of the explosive 2,4,6-trinitrotoluene (TNT) have led to widespread, global contamination of soil and groundwater. TNT is highly toxic and recalcitrant to degradation resulting in environmental build-up with far reaching ecological and health implications. It is therefore a priority to …
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Light Enhanced Toxic/tumorigenic Potential of Trinitrotoluene (Tnt) and Analogs
The acute toxicity of TNT, 2-amino,-4,6-dinitrotoluene (2A) and 4-amino,-2,6-dinitrotoluene (4A) to Photobacterium phosphoreum (Microtox reagent), Daphnia magna (daphnia), and Dugesia dorotocephala (planaria) was enhanced by near-ultraviolet light (nUV) coexposure. The light enhanced toxicity of …
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Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments
… The objective of this work was to describe TNT fate in contaminated aquifer sediments. A series of bench scale experiments and model simulations were performed to evaluate the fate of TNT in historically contaminated aquifer sediments. A TNT contaminated site on the National Priorities List, …
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Synthesis and Functionalizations of Trimetallic Nitride Template Endohedral Metallofullerenes (TNT-EMFs)
… nitride template endohedral metallofullerene (TNT-EMF) and the functionalizations of M3N@C80 (M = Sc, Gd, Ho) under the high-speed vibration milling (HSVM) condition. In addition, this thesis discusses the internal motion of the cluster, Sc3N inside three different carbon cages, C68, C78 and …
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Electrochemical techniques for detection of Tnt and other explosives using disposable screen-printed carbon electrodes
… for measurement of 2,4,6-Trinitrotoluene (TNT), and Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX). The square wave voltammetric (SWV) scan technique can be used to measure TNT and RDX in as little as 50 muL sample volumes applied to the electrode surface within minutes. The detection limit …
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Synthesis, Isolation, and Characterization of Tb-based Large Cage TNT-EMFs and Dimetallic Endohedral Metalloazafullerenes
A family of novel large cage Tb-based TNT-EMFs Tb₃N@C<sub>2n</sub> (40 ≤ n ≤ 44), and a family of novel dimetallic endohedral metalloazafullerenes with the molecular formula of M₂@C₇₉N (M=Y, Tb, and La), were for the first time systematically synthesized, isolated, and structurally characterized. …
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Shrubs as Sentinels of Ordnance Contamination: Using Plant Physiology and Remote Sensing to Detect TNT in Soils
… of woody plants to 2,4,6-trinitrotoluene (TNT) contamination. Baccharis halimifolia were potted in soils containing various concentrations of TNT and physiological responses were observed over a 9-week experimental period. Measurements included the collection of remotely sensed data, such …
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Analysing the influence of TNT on Southern African trees grass and shrubs using in-situ hyperspectral data
… minefield. This study investigates whether TNT from leaking landmines can be detected using hyperspectral remote sensing of plant foliage, with the aim of being an area reduction aid. Increasing concentrations of TNT was administered to a study sample of five species of trees, five species …
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Electrochemická syntéza, charakterizace a aplikace nových typů 1D oxidických struktur přechodných kovů
… komplexní výzkum růstu TiO2 nanotrubicových (TNT) vrstev s vysokým poměrem délka/šířka (HAR) a jejich využití v pokročilých světelně-sensorických aplikacích. Výzkumné výstupy dosažené během tohoto doktorského studia zahrnují sérii článků, které se zabývají výzkumem syntézy a charakterizace …
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Targeted Degradation of Trinitrotoluene Using Iron (II)-Cyclodextrin-Peroxide Systems
Residues of 2,4,6-trinitrotoluene (TNT) in soil and groundwater near former production and processing plants generate large environmental concerns. A cyclodextrin (CD) mediated Fenton remediation of TNT contaminated water and sand (soil analogy) is presented. Kinetic studies were performed to …
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Untersuchungen zum differentiellen Transport der alpha1- und alpha2-Untereinheiten des GABA-A-Rezeptors und zur TNT-vermittelten interzellulären Kommunikation zwischen Astrozyten und Neuronen
… Astrozyten durch „tunneling nanotubes“ (TNTs) verbunden waren. Aus diesem Grund wurde ein weiteres Augenmerk auf den TNT-vermittelten, interzellulären Transfer membranöser Strukturen zwischen kultivierten Astrozyten und Neuronen gelegt. Dabei gelang es, den Austausch von kleinen …
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Complexation of Organic Guests and Coordination of Metal Ions by Cyclodextrins: Role of Cyclodextrins in Metal-Guest Interactions
… explosives, such as trinitrotoluene (TNT), are of particular environmental concern due to their recalcitrance in soils and their potent toxicity and mutagenicity to both aquatic and mammalian species. TNT was the most widely used military explosive through the era encompassing both the …
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Avian and Aquatic Invertebrate Abundance on Three Agricultural Management Systems in Eastern South Dakota
… (CON), organic (ORG), and transitional no-till (TNT) farming system. Waterfowl pair abundance varied for individual species on all wetland classes in 1993 and 1994. Total waterfowl pair abundance was generally higher in temporary wetlands on the ORG and/or TNT farming systems, however it was …
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Chemical Reactivity and Regioselectivity of Trimetallic Nitride Endohedral Metallofullerenes
… nitride template endohedral metallofullerenes (TNT EMFs) are some of the most promising fullerene-based materials (e.g., as MRI and X-ray contrast agents) because of their high yields compared to classic endohedral metallofullerenes. This dissertation addresses the chemical reactivity and …
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The treatability of a munitions-manufacturing waste with activated carbon
… and color. Results show that treatment of the TNT manufacturing waste from Radford Army Ammunition Plant, Radford, Virginia, with activated carbon is technically feasible. Essentially complete removal of color and nitroaromatic substances can be affected with packed-bed carbon column treatment. …
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Development and Application of Non-Traditional Vertebrate Models to Investigate Terrestrial Ecological Risk to 2,46-Trinitrotoluene Exposure
… Army installations is 2,4,6-trinitrotoluene (TNT). This was a result of the mass manufacturing, storing, and assembly of weapons from the early 1900's until the 1950s. The Army has reported soil concentrations of TNT ranging from 0.12 to 38,600 ug/g (Walsh and Jenkins 1992) and 0.08 to 64,000 …
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Mathematical Modeling of Reductive Transformation Kinetics of Branched Degradation Pathways of Groundwater Contaminants
… explosive compounds (e.g. 2,4,6-Trinitrotoluene (TNT)) degrade in the subsurface primarily by microbially catalyzed reductive transformation reactions. From a regulatory point of view, the capability to simulate the kinetics of these reductive transformation reactions coupled with other …
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Studies of Solution Paramagnetic-Substrate Nuclear and Electron Intermolecular Interactions
… functionalized endohedral metallofullerenes (TNT-fMF). The attitude and average distance of interaction for each TEMPO-substrate system was determined from comparing density functional theory (DFT) calculation results with experimental hyperfine coupling constants leading to an improved …
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