Engineering Commons^™

Citrate’S Counter Ions And Ph Effect On Gold Nanoparticle Growth Kinetics, Andrew B. Closson

Honors College

The effects of citrate’s counterions and pH are examined in gold nanoparticle growth kinetics. The growth of gold nanoparticles from citrate reduction is a common method used for creating particles from 10-120 nm with a well-defined size distribution. TEM observation of the seed-mediated growth shows an intermediate aggregation phase that has been shown by researchers to exist in other solution-phase nanocrystal growth. We have shown that this intermediate agglomeration phase within particle growth may be avoided with certain pairings of counterion and pH. This aggregation phase has no noticeable effects on the formation of the particles at a smaller scale …

Selected Research And Development Projects, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

Promotional flyer with summaries of a selection of research and development projects including VolturnUS 1:8, DeepCLiDAR, Composite Arch Bridge System, MAKO, Secure Hybrid Composite Shipping Container, Modular Ballistic Protection System, and NASA HAID.

Dynamic Modeling Of A Catamaran Using A Lagrangian Approach, Tamara R. Thomson

Honors College

In this thesis, the development and application of a dynamic model of the 2016 Autonomous Boat Team’s catamaran are discussed. The model is two dimensional and describes the motion of the boat in a calm freshwater environment. The linear and rotational equations of motion used in the model were derived by employing Lagrangian dynamics, and the thrust of the motors and drag of the hulls were found through experimentation. The resulting equations are ma = (1/2) ∙ p ∙ x²C_DfA+2F and 1a = (b/16) ∙ p ∙𝜃²C_DrA+F₂ ∙ (b/2) - F …

The Role Of Ship1 In The Innate Immune System During An Influenza A Viral Infection, Spencer Earle Traxler

Honors College

The SHIP1 gene is a member of the inositol polyphosphate-5-phosphate (INPP5) and its expressed protein functions as a negative regulator of myeloid cell proliferation, survival, and migration. Mutations in this gene are associated with various defects and cancers of the immune system. Previous studies have shown that in response to wound formation, ship1-deficient zebrafish have increased neutrophil motility while overexpression of ship1 resulted in decreased neutrophil migration (Lam et al. 2012). From this research, it is suggested that SHIP1 is a key brake that limits neutrophil motility through a PI3K signaling-dependent pathway. While the role of SHIP1 during a wound …

Analysis Of Flow Of Compressed Natural Gas Through A Fuel Injector, Erin E. Eldridge

Honors College

The purpose of this thesis is to discuss the determination of the mass flow rate of compressed natural gas through a Delphi Multec CNG Injector. Three methods are used to find the mass flow rates at various pressures. First, SolidWorks Flow Simulation is employed to calculate the mass flow rate with computational fluid dynamics. An analytical solution to the problem is also presented. Finally, experimental results from a previous year’s Capstone team are presented. Fuel flow curves are provided to compare the results from each methodology. The results from the SolidWorks Flow Simulation and analytical calculation agree at the extrema …

Optimization And Synthesis Of Silver Nanoparticles Embedded Within A Porous Substrate For Raman Spectroscopy, Matthew W. Talbot

Honors College

Raman spectroscopy is a promising method for detection of a wide range of water contaminants. Raman spectroscopy’s growing list of applications relies upon signal enhancement achieved in recent years. A test strip or substrate designed to optimize Raman spectra, capable of withholding water and enhancing signal, would be a useful tool for applications including water quality tests. Signal enhancement may be achieved by the addition of silver nanoparticles (NPs) into a three-dimensional structure of cellulose nanofibers (CNF). The magnitude of signal enhancement may be related to nanoparticle size and morphology, and so control over the synthesis of silver nanoparticles could …

Modeling Of A Continuously Variable Transmission And Clutching Of A Snowmobile, Camerin Michael Seigars

Honors College

This thesis describes the conceptual operation of a continuously variable transmission (CVT) and develops a model of a CVT system. The purpose is to form a framework for understanding how CVTs work, what factors go into their design, why they are used on almost all modern snowmobiles, and how they can be tuned for better performance. By developing a model using rigid body analysis, computer modeling, and a list of structured equations, a CVT can be tuned more efficiently. The model is used to calculate values difficult or tedious to evaluate by hand with visual aide for clearer understanding of …

Campus Electrical Map: Financial Repercussions Of Failures, Neal Harrison-Billiat

Honors College

This thesis will find costs for electrical outages on campus. The costs will be for three different major classifications of buildings, and will be done on a square foot-hour basis. The three different classifications are academic, dining, and dormitory space. For each square foot of space that is out of power for an hour, a number will be calculated that will allow for extrapolation onto other buildings of the same classification. This thesis is a case study, and will only cover three different types of buildings determined to be an accurate representation of their classification. Also, only buildings on the …

Modeling Of A Continuously Variable Transmission And Clutching Of A Snowmobile, Camerin Michael Seigars

Honors College

This thesis describes the conceptual operation of a continuously variable transmission (CVT) and develops a model of a CVT system. The purpose is to form a framework for understanding how CVTs work, what factors go into their design, why they are used on almost all modern snowmobiles, and how they can be tuned for better performance. By developing a model using rigid body analysis, computer modeling, and a list of structured equations, a CVT can be tuned more efficiently. The model is used to calculate values difficult or tedious to evaluate by hand with visual aide for clearer understanding of …

Atlantic Salmon Federation And Midcoast Conservancy Proposal For The Coopers Mills Dam To The Town Of Whitefield, January 21, 2016, Coopers Mill Dam Committee, Atlantic Salmon Federation, Sheepscot Valley Conservation Association, Mbp Consulting, Kleinschmidt

Maine Town Documents

A town appointed citizen committee in Whitefield (Jane Chase, Chuck Vaughn, Louie Sell, Leslie McCormick, Barry Tibbetts, Scott Higgins, and Herb Hartman) met monthly to consider all options for the future of the Coopers Mills Dam and surrounding land. This included consideration of repairing the dam, looking at the potential for small hydropower; and removing the dam and providing alternative sources of water for fire protection in the Coopers Mills Village. As part of this process the Atlantic Salmon Federation (ASF) and the Midcoast Conservancy (MC) provided a number of experts, consultants, and engineers to help in the committees work.

Downtown Waterville Feasibility Study Waterville, Maine, Gorrill Palmer Consulting Engineers, Inc., Bfj Planning, Mitchell & Associates Landscape Architects

Maine Town Documents

The Purpose and Need for this project is to: “Revitalize the Downtown to improve the aesthetics, support existing businesses and encourage economic growth, improve pedestrian and bicycle accommodations and provide adequate parking while maintaining vehicular capacity in the overall area.”

Contributions and assistance in the completion of the study were provided by the City of Waterville, Colby College, the Maine Department of Transportation, and the General Public.