Browsing Chemistry by Title
Now showing items 1-20 of 826
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2-Aminopurine-modified DNA homopolymers for robust and sensitive detection of mercury and silver
(Elsevier, 2017-01-15)Heavy metal detection is a key topic in analytical chemistry. DNA-based metal recognition has advanced significantly producing many specific metal ligands, such as thymine for Hg2+ and cytosine for Ag+. For practical ... -
A 30-Year Study of Impacts, Recovery, and Development of Critical Effect Sizes for Endocrine Disruption in White Sucker (Catostomus commersonii) Exposed to Bleached-Kraft Pulp Mill Effluent at Jackfish Bay, Ontario, Canada
(Frontiers, 2021-04-22)Jackfish Bay is an isolated bay on the north shore of Lake Superior, Canada that has received effluent from a large bleached-kraft pulp mill since the 1940s. Studies conducted in the late 1980s found evidence of reductions ... -
3D printing of soft hydrogels incorporating functional nanomaterials
(University of Waterloo, 2017-01-10)Tissue engineering (TE) scaffolds are required to closely mimic the human body environment to enable the study of cell behavior in vitro and allow the fabrication of artificial tissue constructs. The scaffolds should possess ... -
Accelerating peroxidase mimicking nanozymes using DNA
(Royal Society of Chemistry, 2015-09-07)DNA-capped iron oxide nanoparticles are nearly 10-fold more active as a peroxidase mimic for TMB oxidation than naked nanoparticles. To understand the mechanism, the effect of DNA length and sequence is systematically ... -
Accurate Determination of the Diffusion Coefficient of Proteins by Fourier Analysis with Whole Column Imaging Detection
(American Chemical Society, 2015-01-21)Analysis in the frequency domain is considered a powerful tool to elicit precise information from spectroscopic signals. In this study, the Fourier transformation technique is employed to determine the diffusion coefficient ... -
Action Mechanism and Structural Studies on the Lipopeptide Antibiotic Daptomycin
(University of Waterloo, 2019-07-02)Daptomycin (dap) is calcium-dependent lipopeptide antibiotic that is used clinically to treat systemic infections caused by Gram-positive pathogens. It is thought that dap brings about its antimicrobial effect by binding ... -
The action mechanism of daptomycin
(Elsevier, 2016-12-15)Daptomycin is a lipopeptide antibiotic produced by the soil bacterium Streptomyces roseosporus that is clinically used to treat severe infections with Gram-positive bacteria. In this review, we discuss the mode of action ... -
An Acyl-Linked Dimer of Daptomycin Is Strongly Inhibited by the Bacterial Cell Wall
(American Chemical Society, 2017-03-28)The lipopeptide antibiotic daptomycin is active against Gram-positive pathogens. It permeabilizes bacterial cell membranes, which involves the formation of membrane-associated oligomers. We here studied a dimer of daptomycin ... -
Adnectin Solubility and Dynamics
(University of Waterloo, 2019-10-28)Rapid growth of the global market for monoclonal antibodies (mAbs) has generated considerable interest in the development of alternative molecules that facilitate rapid discovery and manufacturing, while replicating the ... -
Adsorption and Desorption of DNA on Graphene Oxide Studied by Fluorescently Labeled Oligonucleotides
(American Chemical Society, 2011-03-15)Being the newest member of the carbon materials family, graphene possesses many unique physical properties resulting is a wide range of applications. Recently, it was discovered that graphene oxide can effectively adsorb ... -
Adsorption of DNA Oligonucleotides by Titanium Dioxide Nanoparticles
(American Chemical Society, 2014-01-28)Titanium dioxide (TiO2) or titania shows great promise in detoxification and drug delivery. To reach its full potential, it is important to interface TiO2 with biomolecules to harness their molecular recognition function. ... -
Adsorption of DNA onto gold nanoparticles and graphene oxide: surface science and applications
(Royal Society of Chemistry, 2012-06-28)The interaction between DNA and inorganic surfaces has attracted intense research interest, as a detailed understanding of adsorption and desorption is required for DNA microarray optimization, biosensor development, and ... -
Adsorption of Nanoceria by Phosphocholine Liposomes
(American Chemical Society, 2016-12-13)Nanoceria (CeO2 nanoparticle) possesses a number of enzyme-like activities. In particular, it scavenges reactive oxygen species based on in-vitro and in vivo antioxidation studies. An important aspect of fundamental physical ... -
Advanced Electrodes and Electrolytes For Long-Lived and High-Energy-Density Lithium-Sulfur Batteries
(University of Waterloo, 2017-05-16)The increasing demand on renewable but intermittent energy and the need for electrified transportation place great emphasis on energy storage. Lithium-sulfur (Li-S) batteries are promising systems due to the high theoretical ... -
Advanced research on Lithium-Sulfur battery : studies of lithium polysulfides.
(University of Waterloo, 2013-10-03)This thesis was devised as a fundamental study of the Li-S system by the use of 7Li Magic Angle Spinning (MAS) Nuclear Magnetic Resonance (NMR), X-ray Absorption Near- Edge Structure (XANES), and Non-Resonant Inelastic ... -
Advanced Separation Techniques in the Analysis of Environmental Pollutants
(University of Waterloo, 2012-04-30)Recent developments in chromatographic supports and instrumentation for liquid chromatography are enabling rapid and highly efficient separations. Various analytical strategies have been recently proposed, for example the ... -
Advances in Biamperometry with Applications in Ocular Toxicology
(University of Waterloo, 2013-10-02)This thesis presents advances in biamperometry, together with applications cyclic biamperometry, in in vitro ocular cytotoxicity assessment. For the cytotoxicity/viability assessment, cultured human corneal epithelial cells ... -
Advances in Multidimensional Chromatography
(University of Waterloo, 2012-07-23)Comprehensive two-dimensional gas chromatography (GC×GC) is among the most powerful methods used to separate complex samples. Two columns of different selectivities are coupled in series through a special interface ... -
Advances in solid-phase microextraction as sample preparation method for food analysis.
(University of Waterloo, 2015-02-25)Within all steps involved in the analytical process, sample preparation is considered the most time-consuming step. Therefore, substantial efforts have focused on the search for automated sample preparation strategies that ... -
Advances in the density matrix renormalization group method for use in quantum chemistry
(University of Waterloo, 2008-05-01)Despite the success of modern quantum chemistry in predicting properties of organic molecules, the treatment of inorganic systems, which have many close lying states, remains out of quantitative reach for current methods. ...