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Showing 1 to 20 of 229 for “"540 Chemistry"”.
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Repetitions and Iterations: Novel Approaches to Characterize Protein-Peptide Interactions of Designed Armadillo Repeat Proteins by Solution NMR
About 15-40% of all interactions in the cell are estimated to be peptide-protein interactions and consequently designing a scaffold able to interact with a target peptide through a conserved binding mode has potentially many applications in the field of research, diagnostic and therapeutics. The …
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Biochemistry of micro-polutants in sediments of Mtoni estuary, Tanzania
In order to describe and evaluate the past and current status, and predict the future status of mangrove ecosystem in relation to changing human activities in the coastal areas and its environment in Tanzania, mangrove sediments from the Mtoni estuary were analysed for elemental (C, N) and isotopic …
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Assessment of Bioactivity of Se-lected Plants against Pests and Microbes from Agro-pastoral Communities in Mbulu District, Tanzania
This study intended to have an ethnobotanical inventory of medicinal and pesticidal plant species and their bioactivities and toxicity against selected bacteria, fungi and storage pests. Bioactivities (antimicrobial and antioxidant activities) against disease causing organisms, toxicity against …
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Levels of Heavy metals in Soil, Water, and Plants and Variation of water Quality Parameters at Vikuge in Kibaha District, Tanzania
The levels of toxic heavy metals ( cadmium, lead, copper, zinc, chromium and iron) were checked in soil, water, plant leaves, fruits and roots obtained at Vikuge in Kibaha, Tanzania. The samples of water from the three wells were taken in triplicate, similar to the samples of plants, fruits and …
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Studies on the residue chemistry of some organophosphorus pesticides
… plan of working has involved synthetic organic chemistry and analytical chemistry related to specific studies on two organophosphorus pesticides, viz. Q, Q-diethyl -(K-ethosycarbonyl-8-methylcarbamoylmethyl) phosphorodithioate (common name mecarbam) and 0, G-diethyl S-chloromethyl …
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Electrochemistry and photochemistry of sulphonium salts
The cleavage in aqueous solution of the C-S+ bond in a series of related sulphonium salts having a benzyl ligand has been investigated: (i) electrochemically (ground state), (ii) photochemically (excited state). (i) Most of the sulphonium salts examined reduced in the same general manner: the …
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Kinetics of hydrogen evolution and absorption during electrochemical reactions as determined by monitoring the volume of hydrogen bubbles
The piezo electric technique (P.E.T) devised in this department is a highly sensitive method for measuring the total volume of gas bubbles suspended in a solution. This is achieved by simply performing a static compressibility test, causing small pressure fluctuations in the volume of a solution …
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Synthesis and characterisation of novel α-functionalised phosphoryl derivatives
This thesis focuses on the synthesis and study of α-aminoalkylphosphinic acids, α-aminoalkylphosphonic acids and macrocycles containing these sub-units. There are two broad types of macrocyclic systems that are targeted: (i) C-functionalised α-aminophosphonic acids; and (ii) N-functionalised …
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Studies of quinone monooximes derived from dihydroxyphenylalanines
This thesis is concerned with the nitrosation behaviour of 1,5-, 1,6- and 2,7-dihydroxynaphthalenes towards equimolar and excess sodium nitrite/acid. The direct and indirect methods of nitrosations have been used to prepare mono- and di-nitrosated products. Under all experimental conditions …
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Lanthanide complexes of phthalimide and phthalamate containing ligands: synthesis, photophysical properties and their potential applications
Molecular sensors and switches have made important contributions to biomedical devices and molecular computational operations. There are numerous molecular designs using a fluorophore linked through a spacer group to a receptor(s), with a wide dynamic range, directional precision, target …
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Studies of the role of ligands in determining the structures of polynuclear metal compounds
… in the solid state and how this relates to the chemistry of the cluster in solution.
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Metal complexes of 1,2-quinone monooximes and their applications in organic synthesis
Systematic investigations of the reactions of 1,2-quinone monooximes (qoH) with alkali (lithium, sodium and potassium) and alkaline earth metal (magnesium and barium) hydroxides and acetates [M(OH)n or M(OAc)r] have been carried out.
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