Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Development Of Pesticide Sensing Polyaniline Electrode Through Detection Of Alachlor By Cyclic Voltammetry, Todd M. Conner
Development Of Pesticide Sensing Polyaniline Electrode Through Detection Of Alachlor By Cyclic Voltammetry, Todd M. Conner
Honors College
This research project was done to develop a chemical sensor for detection of a specific pesticide, a chlorinated herbicide called alachlor. Alachlor is an herbicide used to kill broadleaf weeds that grow mainly in corn, peanuts, and soybeans. The purpose of this project was to develop an environmentally friendly sensor in the form of an electrode that will be able to detect alachlor in aqueous samples. The way this was done was by using an electrochemical instrumentation technique called cyclic voltammetry. Polyaniline, a conducting polymer, was grown on a platinum substrate and the resulting electrode was cycled in various concentrations …
A Growing Town: Developing A Local Food System In Orono, Maine, Gregory Viens
A Growing Town: Developing A Local Food System In Orono, Maine, Gregory Viens
Honors College
Local food systems are different from industrial agriculture systems in their social interaction, economic size and stability, political support and assistance, and environmental impacts. Industrial agriculture has flourished, while the ability of widespread local food systems to survive for the long term has yet to be determined. Research of local food systems reveals that dedicated and involved communities, motivated and knowledgeable managers, and political and financial support are the most essential determinants of successful systems. This research explores three existing local food system models and examines the extent to which Orono, Maine could support these models. A suitability analysis of …
The Hydrological And Geochemical Role Of The C Horizon In A Glacial Till Mantled Headwater Catchment, Margaret A. Burns
The Hydrological And Geochemical Role Of The C Horizon In A Glacial Till Mantled Headwater Catchment, Margaret A. Burns
Honors College
The C horizon is the deepest soil layer that is technically unweathered, similar to the rest of the regolith beneath the bottom of the pedon. In New England, the C horizon formed from the retreat of the glaciers eroding bedrock and depositing an unsorted and unstratified glacial till on the surface. This research evaluated the hydrologic and chemical role of the C horizon, inclusive of underlying regolith, in a forested watershed at the Hubbard Brook Experimental Forest (HBEF) in New Hampshire. Results suggest that the C horizon at HBEF is extensive and heterogeneous. Traditional concepts of basal till offer a …
Modeling The Spread Of Biologically-Inspired Internet Worms, Emma Strubell
Modeling The Spread Of Biologically-Inspired Internet Worms, Emma Strubell
Honors College
Infections by malicious software, such as Internet worms, spreading on computer networks can have devastating consequences, resulting in loss of information, time, and money. To better understand how these worms spread, and thus how to more effectively limit future infections, we apply the household model from epidemiology to simulate the proliferation of adaptive and non-adaptive preference-scanning worms, which take advantage of biologically-inspired strategies. From scans of the actual distribution of Web servers on the Internet, we find that vulnerable machines seem to be highly clustered in Internet Protocol version 4 (IPv4) address space, and our simulations suggest that this organization …
Heterogeneous Deformation Of Gabbroic Rocks, Calvin Mako
Heterogeneous Deformation Of Gabbroic Rocks, Calvin Mako
Honors College
The Grenville province is the exhumed remains of a more than 1 billion year old orogen. Mid to lower crustal rocks of this orogen are now exposed at the surface, affording the opportunity to examine deeper crustal processes during orogeny. I have studied an outcrop of anorthositic gabbro from the Central Metasedimentary Belt boundary thrust zone (CMBbtz) in the Grenville province of southern Ontario. The CMBbtz is a region that separates two major lithotectonic domains of this part of the Grenville province and is thought to have accommodated large scale thrusting in the mesoproterozoic era. The CMBbtz comprises large crystalline …
Optimization Of Microwave Accelerated Extraction Of Resveratrol From Tree Bark, Dustin Niedt
Optimization Of Microwave Accelerated Extraction Of Resveratrol From Tree Bark, Dustin Niedt
Honors College
Resveratrol is a compound with various properties of interest. Traditionally it is extracted from tree bark via a Soxhlet extraction. Due to the high energy cost of Soxhlet extraction, this project studied a possible alternative method known as microwave accelerated extraction. Microwave trials were run testing solvents and times of bark extraction and compared to a traditional Soxhlet extraction on the same tree sample. Preliminary results suggest that microwave extraction may be more efficient than Soxhlet extraction. A microwave extraction using 0.5 g of Norway spruce bark, 5 mL of ethanol, run for 5 minutes yielded 14.74±0.79 μg/g of bark. …