Current Search: poster (x) » Office of Undergraduate Research and Inquiry (x) » Snyder, Patricia Ann (x)
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Title
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An Experimental and Theoretical Investigation of the Excited States of Isobutene.
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Creator
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McLachlan, Jeffrey, Snyder, Patricia Ann, Office of Undergraduate Research and Inquiry
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Abstract/Description
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Vacuum ultraviolet magnetic circular dichroism (MCD) and absorption spectra of isobutene were obtained experimentally and compared to theoretical data (DFT calculation with Gaussian software) with the goal of better understanding the electronic structure of simple olefins. MCD is the differential absorption of left and right circular polarized light in the presence of an external magnetic field. This means that a MCD spectrum contains both positive and negative peaks while an absorbance...
Show moreVacuum ultraviolet magnetic circular dichroism (MCD) and absorption spectra of isobutene were obtained experimentally and compared to theoretical data (DFT calculation with Gaussian software) with the goal of better understanding the electronic structure of simple olefins. MCD is the differential absorption of left and right circular polarized light in the presence of an external magnetic field. This means that a MCD spectrum contains both positive and negative peaks while an absorbance spectrum contains only positive peaks. MCD is useful when used in conjunction with a corresponding absorbance spectrum to assign spectral bands that may have been hidden by overlap in the absorbance spectrum. The experimental and theoretical results coincide with the two lowest energy transitions of isobutene being assigned as [...]. This is also consistent with what has been observed in ethylene and propylene, π→π^* is not the lowest transition in mono-olefins.
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Date Issued
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2016
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PURL
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http://purl.flvc.org/fau/fd/FA00005589
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Subject Headings
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College students --Research --United States.
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Format
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Document (PDF)
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Title
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Impact of Glutamate In Amyotrophic Lateral Sclerosis (ALS).
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Creator
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Maldonado, Dianabell, Jaiprashad, Rajesh, Snyder, Patricia Ann, Office of Undergraduate Research and Inquiry
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Abstract/Description
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Amyotrophic Lateral Sclerosis (ALS) is a neurodegenerative disease afflicting the global population. This disease affects motor neuron nerve cells located in the brain, brainstem, and spinal cord that serve as controlling units and communication points between the nervous system and the muscles of the body. In ALS, both the upper motor neurons, in the brain, and the lower motor neurons, in the spinal cord, degenerate or die; thus ceasing transmission. The cause of this disease is still under...
Show moreAmyotrophic Lateral Sclerosis (ALS) is a neurodegenerative disease afflicting the global population. This disease affects motor neuron nerve cells located in the brain, brainstem, and spinal cord that serve as controlling units and communication points between the nervous system and the muscles of the body. In ALS, both the upper motor neurons, in the brain, and the lower motor neurons, in the spinal cord, degenerate or die; thus ceasing transmission. The cause of this disease is still under investigation. Here in, it is hypothesized that ALS engenders from the over excitation of motor nerve cells due to an excess of the amino acid, glutamate, the principal neurotransmitter in the brain. Therefore, an investigation into the properties of the neurotransmitter glutamate, which could be the potential cause of this neurodegenerative disease, will help elucidate the role of this amino acid in ALS.
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Date Issued
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2016
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PURL
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http://purl.flvc.org/fau/fd/FA00005577
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Subject Headings
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College students --Research --United States.
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Format
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Document (PDF)
