Browsing Chemistry by Title
Now showing items 1-20 of 20
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Analysis of the chemistry of making a leaded linseed oil paint.
(Wheaton College (Norton, Mass.), 2015)Leaded linseed oils are a binder for oil paints used in the authentic restoration and conservation of traditional paintings. Analytical methods were used to investigate the color change which occurs during the 18-day ... -
Asymmetric hydrogenation of acetamido cinnamate ester in water.
(Wheaton College (Norton, Mass.), 2014)This research aimed to investigate the DuPHOS-Rh catalyzed asymmetric hydrogenation of acetamido cinnamate ester using water as the sole reaction solvent. The attempted synthesis of acetamido cinnamate ester was carried ... -
Behavior and occurrence of organic acids in Antarctic ice : methanesulfonic acid, acetic acid, and formic acid in ice cores from West Antarctica.
(Wheaton College (Norton, Mass.), 2014) -
A Chemical Investigation of the 18 Day Creation of Lead Oil.
(Wheaton College ; Norton, Mass., 2008)Lead oil is a paint medium used by conservators to restore oil paintings authentically to their original brilliance. Lead oil is a combination of linseed oil and lead oxide. Upon heating the solution darkens in color and ... -
Chemical weathering along the Greenland Ice Sheet margin
(Wheaton College ; Norton, Mass., 2009)Chemical weathering is thought to be a major control on the concentration of atmospheric carbon dioxide and therefore on global climate. Past chemical weathering surveys have focused on continental rivers, and little ... -
Chronic exposure to methylmercury adversely affects response to oxidative stress.
(Wheaton College (MA), 2019)Methylmercury (MeHg) is an environmental neurotoxicant that has been shown to lead to physiological inefficiencies. Environmental contamination is a major concern, due to the high amounts of mercury pollution that affects ... -
Comparison of two indigo dye derivatives in the spectrophotometric detection of copper in aqueous media.
(Wheaton College (MA), 2019)Copper is an essential element in the human body, playing a role in redox reactions and substrate activation reactions. Several diseases, including Menkes disease and Wilson’s disease, are associated with copper metabolism ... -
Detection and Quantification of Tetracycline using Energy-Efficient Synthesized Carbon Dots
(Wheaton College (Norton, MA)., 2020-05-10)The use of carbon dots as sensors has increased in popularity and they have been found to be efficient fluorescent probes with high sensitivity and selectivity. The carbon dot synthesis efficiency was improved in this ... -
The effect of n-acetylcysteine on methylmercury treated breast cancer cells.
(Wheaton College (Norton, Mass.), 2016)In the absence of estrogen, metalloestrogens can activate the estrogen receptor and cause breast cancer proliferation in estrogen receptor-positive cells. Methylmercury (MeHg) is a metalloestrogen that is often consumed ... -
The effects of methylmercury on breast cancer progression in zebrafish
(Wheaton College (Norton, Mass.), 2016)Breast cancer is defined as a group of malignant cells that originate in the breast and have the potential to spread to distant sites in the body, most commonly the liver, lungs, bones and brain. Many factors increase the ... -
Enantioselective hydrogenation of enol esters in water.
(Wheaton College; Norton, Mass., 2011-11-18)Significant work has been done using traditional organic solvents for catalytic asymmetric hydrogenations. Recently, there have also been reports of the successful use of alternative reaction media such as ionic liquids ... -
Enantioselective synthesis of beta-amino acids for inclusion into natural products
(Wheaton College (Norton, Mass.), 2020-05-10)Reported herein is the analysis of methods to synthesize beta-amino acids for the use in natural product synthesis. Three syntheses were attempted to create the necessary beta-enamide intermediates, however, only one method ... -
Mechanochemical Synthesis of Thiolactams with Lawesson's Reagent
(Wheaton College. (Norton, Mass.), 2021-05-16)Thiolactams have proved to be an essential class of compounds in medicine, agriculture, and chemical synthesis. These compounds can be reliably synthesized with 2,4-bis(4- methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-dithione ... -
Method development for the spectrophotometric analysis of arsenic in aqueous media.
(Wheaton College (Norton, Mass.), 2015)The use of trypan blue was explored as a detection and quantification method for As(III). This procedure represents an improvement of the method described by Narayana et al. (2006) by using the shift in absorbance wavelength ... -
Methylmercury promotes the growth and progression of breast cancer in danio rerio embryos.
(Wheaton College (MA)., 2018)Estrogen is a female sex hormone that is important in the development of secondary sex characteristics in females and promotes breast cancer growth and metastasis of estrogen receptor (ER)-positive breast cancer cells. ... -
The Role of Mercury Speciation in its Methylation by Methylcobalamin (vitamin-B12)
(Wheaton College ; Norton, Mass., 2008)Mono-methyl mercury (MMHg) travels through the food chain by means of bioaccumulation, and humans are exposed to this potent neurotoxin by consumption of contaminated fish and shellfish products. Although it is well ... -
The role of septin-2 in the progression of epithelial ovarian cancer.
(Wheaton College. (Norton, Mass.), 2020-05-10)Ovarian cancer is the fifth leading cause of cancer mortality in women and the second most common gynecological cancer. Epithelial ovarian cancer, the most lethal and most common form, has a five-year survival rate of 47% ... -
Sulfur deposition on the Greenland ice sheet : sources and implications of MSA and sulfate since 1900.
(Wheaton College (Norton, Mass.), 2016)Ice cores contain records of both local and global changes to atmospheric chemistry. Glaciochemical data from three newly acquired ice cores from the western portion of the Greenland Ice Sheet (GIS) were used to create ... -
Synthesis and Luminescence of Lanthanide Complexes with Fluorinated Alkoxide Ligands.
(Wheaton College. (Norton, Mass.), 2020-05-10)Luminescent lanthanide complexes are industrially useful in screen technologies such as smart phones, televisions, and computers. Optimizing the luminescence of these lanthanide complexes is important for their industrial ... -
Synthesis and Reduction Potentials of Lanthanide Fluoroalkoxides
(Wheaton College (Norton, Mass.), 2020-05-09)The syntheses and reduction potentials of the lanthanide fluoroalkoxides [K][La(OC4F9)4(THF)2] and [K][La(pinF)2(THF)3] (Ln = La3+, Sm3+, Ce3+; HOC4F9 = perfluorotertbutanol; pinF = perfluoropinacol) are presented. A ...
