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Articles 1 - 8 of 8
Full-Text Articles in Other Chemistry
Representing The Apparatus In Nineteenth And Twentieth Century Chemical Abstracting Literature, Evan F. Kuehn
Representing The Apparatus In Nineteenth And Twentieth Century Chemical Abstracting Literature, Evan F. Kuehn
Proceedings from the Document Academy
The rise of abstracting services in the 20th century is usually associated with the explosion of original scientific research and its attendant journal literature. The abstract was a tool of information dissemination and access for increasingly expansive and international work. What is often overlooked, however, is the correlation between original research and the technologies that made these advances available. Scientific apparatuses were, however, documented from the beginning, and were also a part of the rise of abstract literature in the 19th and 20th centuries. In this paper I examine the development of abstracts for apparatuses and patents in …
Identification Of Modified Polymer End Groups For Correlations To Physical Properties, Tj Sacco
Identification Of Modified Polymer End Groups For Correlations To Physical Properties, Tj Sacco
Williams Honors College, Honors Research Projects
Plastic has become the primary material for containers in both industrial and commercial fields. Plastics are the optimal choice since they have many physical properties that make them ideal candidates: durability, heat resistance, chemical stability, as well as their inexpensive production cost. Nowadays, the desire for more versatile plastics with strength, flexibility, hydrophobicity, and biodegradability has grown; however, concerns for plastic use have started to rise as well. The overuse of plastics poses a threat to the environment and people’s health: plastics are hard to break down completely which results in the formation of micro(nano)plastics (MNPs). In attempts to circumvent …
Effects Of Chain Length, Saturation, And Bases On Saponification, Sarah Fenik
Effects Of Chain Length, Saturation, And Bases On Saponification, Sarah Fenik
Williams Honors College, Honors Research Projects
This project will analyze the effects of chain length and saturation of fatty acids on saponification processes, as well as the effects of the base used in the reaction. Stearic acid, lauric acid, and oleic acid will be used for the fatty acid comparisons, and sodium hydroxide and potassium hydroxide will be used for the base comparisons. Stearic acid is considered a long chain fatty acid, while lauric acid is considered a short chain fatty acid. Oleic acid is a monounsaturated fatty acid. Five soap products are be made: sodium stearate, sodium laurate, sodium oleate, potassium stearate, and potassium oleate. …
Electrochemical Impedance Spectroscopy Analysis Of Corrosion Of Reinforcing Steel In Fly Ash Mortar By Means Of Transmission Line Modeling, Padraig Stack
Williams Honors College, Honors Research Projects
Electrochemical impedance spectroscopy (EIS) is an important non-destructive tool that allows for a deeper understanding of the electrochemical processes and mechanisms occurring in an electrochemical cell. Equivalent electrical circuits (EECs) are used to model the impedance data into electrical components, such as resistors and capacitors, on a circuit. Current potentiostat offers software packages that can analyze the frequency response, but the software only supports “simple” EEC that can be written as fixed electrical components in some combination of series and parallel. Park and Macdonald propose a transmission line model (TLM) that does not use lumped-element models, instead, the values of …
The Role Of Influenza Infection On Cell Metabolism, Megha Mokkapati
The Role Of Influenza Infection On Cell Metabolism, Megha Mokkapati
Williams Honors College, Honors Research Projects
In this particular study global metabolomics LCMS data was analyzed to determine the effect of influenza infection on host metabolic processes. Specifically, wild-type male and female mouse lung samples from mice infected with PR8 (H1N1) or both PR8 and a reinfection of X31 (H3N2) were analyzed. The LC/MS(liquid chromatography-mass spectrometry) based global metabolomics will be performed on the samples using hydrophilic interaction liquid chromatography to separate polar analytes from the tissues (Dettmer, Aronov, 2007). Metabolites impacted by influenza infection in all samples will be analyzed to compare male and female mice, as well as differences between PR8 infection and X31 …
Chemical Kinetics Using A Smartphone Spectrometer, Mary Greggila
Chemical Kinetics Using A Smartphone Spectrometer, Mary Greggila
Williams Honors College, Honors Research Projects
In a time where many high school science classes are lacking in quality laboratory education, there is a need for accessible chemical equipment that enhance teaching fundamental concepts of chemistry with ease and at a low cost. The DualSpec handheld smartphone spectrometer aims to be a quality open-source spectroscopic instrument that can easily be made and used at home by people of any scientific level. This research sought to show that the DualSpec could be used to teach higher level spectroscopic concepts such as those used in chemical kinetics. The DualSpec was compared to a commercial spectrometer using the commonly …
Mutagenesis-Based Active-Site Characterization Of The Diabetes Drug Target Mitoneet, Lisa Mickley
Mutagenesis-Based Active-Site Characterization Of The Diabetes Drug Target Mitoneet, Lisa Mickley
Williams Honors College, Honors Research Projects
This project investigates the cluster stability of an outer mitochondrial membrane protein mitoNEET under mutational stress and drug binding analysis. MitoNEET is a part of a class of proteins that coordinate an Fe-S molecule into its tertiary structure. This protein is believed to facilitate the oxidative capacity of the electron transport chain by reversible loss of its coordinated Fe-S molecule. The research of this paper uses site directed protein mutagenesis to selectively alter the three cysteine, one histidine cluster coordination into more common coordination patterns such as two cysteine, two histidine or four cysteine. The ultimate goal is to optimize …
Sharp Rna Recognition Motif Optimizations, Extensions, And Mutations For Use In 2d And 3d Nmr Experiments, Shaun M. Christie
Sharp Rna Recognition Motif Optimizations, Extensions, And Mutations For Use In 2d And 3d Nmr Experiments, Shaun M. Christie
Williams Honors College, Honors Research Projects
SMRT/HDAC Associated Repressor Protein interacts with the long noncoding RNA, produced by SRA, by binding at the RRMs. Three projects were done to prepare the truncated proteins for use in 2D and 3D NMR experiments. The first focuses on RRM 3 and its optimization during the purification process. The second focuses on RRM 2-4, which was found to be missing two alpha helices that may be important for protein stability. These helices can also interact with RRM 3 as well due to the tight association of RRMs 3 and 4. The two step PCR extension of RRM 2-4 was assumed …