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Showing 1 to 20 of 160 for “"Chelation"”.
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THE SYNTHESIS AND CHELATION OF SOME AZOPYRIMIDINES
Numerous azo compounds have been shown in the past to have either a stimulating or inhibiting effect on tumour growth* The first recorded observation of the production of tumor-like proliferations was made by Fisher in 1906, who described the atypical epithelial proliferations which re-sulted from …
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Synthetic recognition systems : self-assembly and metal chelation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1994.
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Quantitative Analytic Studies on Some Methine-Chromophore Chelation Reagents
Made available in DSpace on 2014-12-05T19:36:36Z (GMT). No. of bitstreams: 1 0023293.pdf: 5599263 bytes, checksum: d12e290103d6df9324df15bfa5c6bf7e (MD5) Previous issue date: 1957
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Mechanism on Elongated Mitochondria Formation during Iorn Chelation-Induced Senescent Arrest
… morphology to highly elongated form during iron chelation-induced senescence-associated growth arrest of Chang cells. Interestingly, addition of H₂O₂ (200uM) was enough to induce mitochondrial elongation with cellular senescent phenotypes, whereas ethidium bromide (100ng/ml) which was employed to …
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Chelation Properties of Bacterial Spore Components and Spore Responses Toionic Environments
Made available in DSpace on 2014-12-09T14:36:47Z (GMT). No. of bitstreams: 1 6406056.pdf: 6282330 bytes, checksum: fb591537300736c49737e794c732a87b (MD5) Previous issue date: 1963
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Metal Extraction From Soil Samples By Chelation in a Microwave System
This work involves the combination of chelation and microwave extraction as a technique for extracting adsorbed metals in soil. It has been termed in this work, Chelate Assisted Microwave Extraction (CAME). Unlike other extraction methods, CAME is able to differentiate between anthropological and …
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Developing Materials for Rare-Earth–Element Chelation: Synthesis, Solution Thermodynamics, and Applications
… effect of polymer architecture itself on metal chelation. This dissertation reports recent progress in the design, synthesis, and application of polymers for the chelation of various REEs. In addition to synthesizing a series of metal-chelating polymers, we elucidated the thermodynamics of …
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Preparation and Chelation Studies of 2-(2'-Ethoxyethoxy) Ethyl-2, 3-Diaminopropyl Ether
No abstract prepared.
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Helical Pitch, Hydrophobic Binding, Chiral Templation, and Supramolecular Chelation of M-Phenylene Ethynylene Foldamers
… for the folded oligomers is analogous to chelation by multidentate ligands, but here the ""multidentate ligand"" is held together by supramolecular rather than covalent bonds."
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Studies on Some Substituted 1,10-Phenanthroline Derivatives and Related Compounds as Metal Chelation Reagents
Made available in DSpace on 2015-05-12T17:02:33Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0018197.PDF: 8139164 bytes, checksum: 7ca5639c5d97c934fc8ecfb28e9cfe87 (MD5) Previous issue date: 1956
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Development of selective peptide- and protein-based reporters of kinase activity utilizing chelation-enhanced fluorescence
… the chromophore binds Mg + and undergoes chelation-enhanced fluorescence (CHEF). However, due to the BTF design limitation, only residues C- or N-terminal to the phosphorylated residue were used to specify the target kinase. To address this drawback, the recognition-domain focused (RDF) …
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Chelated fluoroboron cations : synthesis and multinuclear nmr studies
… donors that form 5-membered rings upon bidentate chelation were found to chelate effectively when the BF2 source contained two leaving groups (a heavy halide and a Lewis base such as pyridine =pyr or isoxazole =ISOX), i.e., pyr.BF2X (X = CI or Br), ISOX.BF2X and (pyr)2BF2+. Those that would form …
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Role of glutamate in lead-induced toxicity: protection by N-acetylcysteine amide (NACA), a novel thiol antioxidant
… kinase C (PKC) resulting in oxidative stress. Chelation therapy has been a choice to reduce the body burden of lead; however chelation does not eliminate the neurotoxicity of lead...In this study we propose to evaluate the involvement of glutamatergic component in lead-induced toxicity and also …
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Engineering heavy metal resistance in cyanobacteria Synechococcus elongatus PCC7942
… mechanisms of heavy metal detoxification is chelation of the metal ions by endogenous polyphosphate. This study is an evaluation of nanoparticle toxicity that contains heavy metal cores from the perspective of polyphosphate-based chelation. Cadmium was chosen as the toxic heavy metal and the …
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Mechanistic studies of diastereoselective cyclopropanations of homochiral ene-ketals and synthesis and resolution of diastereomeric alpha-hydroxycycloalkanone ketals.
… is thought to result from preferential chelation of the Simmons-Smith reagent at the least sterically hindered lone pair of electrons on the dioxolane oxygen proximal to the alkene. The role of dioxolane oxygen was inferred from studies with a hydrocarbon model system. The effect of …
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Texaphyrin Architectures for Biomedical Applications
… are macrocycles with unique photophysical and chelation properties. These desirable properties have led to extensive clinical evaluations, however, FDA approval has never been obtained. We believe the fundamental properties of texaphyrins, most notably the robust metalation ability, warranted …
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Mechanisms of Post-hemorrhagic Hydrocephalus after Germinal Matrix Hemorrhage
… of hematoma resolution by PPARγ/CD36 and iron chelation by Deferoxamine in hydrocephalus development after germinal matrix hemorrhage. Direct thrombin inhibition reduced short-term mTOR activation and ameliorated long-term post-hemorrhagic hydrocephalus development, neurocogntive deficits, and …
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Asymmetric synthesis of novel anthracyclinones
… stereoselectivity due to competition between chelation and non-chelation controlled pathways. Stereochemistry was assigned to the products using a combination of X-ray crystallography, conformational analysis, nuclear Overhauser enhancements and chemical degradation. Attempts were made to …
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