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Monte Carlo neutronic simulations for a new approach to parametric INAA and Mo-99 production feasibility at MURR
(University of Missouri--Columbia, 2009)
A novel approach to parametric instrumental neutron activation analysis at MURR has been established. In particular, a detailed MCNP5 steady-state model of the MURR core was developed. The model, which was based on the ...
Synthesis and structure-activity relationship of a series of sigma receptor ligands
(University of Missouri--Columbia, 2007)
Sigma receptors are involved in several biological processes, and sigma ligands might be promising as cancer treatment agents, cocaine abuse medicines, and valuable psychiatric drugs. In an attempt to elucidate effectual ...
Ammonia elimination from protonated nucleobases
(University of Missouri--Columbia, 2007)
7 - 9, respectively. The stability of (E)- and (Z)-isomers is studied. The results are discussed of mass-spectrometric studies of the nucleobases adenine 1h (1, R = H), guanine 2h, and cytosine 3h. The protonated nucleobases are generated...
Structural supramolecular constructs of spheres and tubes
(University of Missouri--Columbia, 2006)
This thesis examines four different molecular systems that are in part or substrates for larger structural motifs that resemble spheres or tubes. The first project used donut shaped cucurbituril and through functionalization ...
Ligands for the sigma receptor and the mu-opioid receptor
(University of Missouri--Columbia, 2007)
analogues were synthesized as sigma ligands. Sigma receptors binding assays were conducted for the piperidine analogues. The last chapter is concerned with the opioid receptors, which have three subtypes: mu, delta, and kappa. The [mu]-opioid receptor...
Determination of trace elements levels in plasma from larvae in the course of baculoviral and bacterial infections by inductively coupled plasma-mass spectrometry (ICP-MS)
(University of Missouri--Columbia, 2009)
While a number of studies have examined the effect of infections on the trace elements status of mammals, not any similar study in insects are found. In this study, we used inductively coupled plasma-mass spectrometry ...
Novel chemical mechanisms of DNA damage by natural products
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Leinamycin is a structurally novel natural product isolated from the Streptomyces with potent antitumor and antibiotic activity. In a thiol rich ...
Metabolically activated heterocyclic N-oxide compounds for killing and visualizing hypoxic cancer cells
(University of Missouri--Columbia, 2009)
Tirapazamine (TPZ) is currently undergoing a variety of phase I, II, and III clinical trials for the treatment of various human cancers. TPZ derives its medicinal activity by inducing DNA damage in poorly oxygenated tumor ...
Inactivation of protein tyrosine phosphatases by endogenous and dietary agents
(University of Missouri--Columbia, 2009)
Protein tyrosine phosphatases are a class of enzymes that control a number of critical signaling pathways inside cells. We have discovered a number of dietary and endogenous agents that are capable of modifying these ...
Anisotropic organic materials : ferroelectric crystals and spin-polarized radicals
(University of Missouri--Columbia, 2007)
-aligned crystals because of the much higher chromophore density as compared to polymers. To deeply investigate these crystalline materials, 1,4-diphenyl-butadiene and its derivatives have now been studied. In Chapters 1 - 4, crystal packing of polymorphs of (E,E)-1...
Studies of natural products that reveal novel strategies for efficient modification of DNA
(University of Missouri--Columbia, 2006)
DNA is the central molecule in cells. The correct function of cells depends on the structure of DNA. DNA damaging natural products often show cytotoxic or mutagenic properties, which many times land them medicinal value ...
Prospective radiolabled bombesin conjugates for prostate cancer imaging and therapeutic agents
(University of Missouri--Columbia, 2009)
An active area of prostate cancer research is in the synthesis of radiolabeled peptides for in vivo tumor imaging or therapy. This method is possible since specific receptors are expressed in high concentration on certain ...
Nitrosative guanosine deamination : pyrimidine ring opening implications of effects in homogeneous solution as well as anisotropic environments
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] In recent years a great deal of interest has been focused on the exposure to nitrous acid (HNO2), nitric oxide (NO) and other nitrosating species ...
Biologically relevant chemistry of sulfur heterocycles : from redox regulation of PTP1B to the biological activity of s-deoxy leinamycin
(University of Missouri--Columbia, 2008)
Protein tyrosine phosphatase 1B (PTP1B) is an important member of protein tyrosine phosphatase (PTPs) family that shares a conserved catalytic cysteine thiol residue. PTP1B acts as a negative regulator of insulin mediated ...