Digital Commons Network^™

Cyclodextrin Impedimetric Biosensors For The Detection Of Hydrophobic Metabolites, Zahra Panahi

Doctoral Dissertations

Sepsis is a complicated medical emergency and critically ill patients suffering from infectious diseases are at a high risk for developing and dying from sepsis. According to a recent (2019) cohort study from six United States hospitals, suboptimal care (e.g., delay in antibiotics, inappropriate antibiotic therapy) is responsible for 22.7 % of in-hospital sepsis-associated deaths. In September 2020, the World Health Organization called on the scientific community to develop rapid, effective, and affordable tools to improve diagnosis, surveillance, and treatment of sepsis. Our long-term goal throughout this project is to develop a cyclodextrin (CD) impedimetric tongue that can provide early …

Sub-Canopy Path Planning For Snow Depth Remote Sensing Using Autonomous Multi-Uavs, Debarpan Bhowmick

Master's Theses and Capstones

NASA studies indicate that 68% of the Earth’s fresh water exists in the form of snow andice. As such, analyzing global snow fall patterns is a useful tool with which scientists can extract the quantity of fresh water present in both the atmosphere and on the ground at any given time. The goal of this research is to leverage autonomous Unpiloted Aerial Vehicles (UAVs) to measure snow depth on the forest floor via sub-canopy flight. To enable such remote sensing missions, overhead Light Detection And Ranging (LiDAR) scans are used to aid in pre-determined UAV flight path planning. This results …

Multi-Uncrewed Underwater Vehicle (Uuv) Optical Communication System Design, Igor Vladimirov

Master's Theses and Capstones

Over the past few decades the state of art of Uncrewed Underwater Vehicles (UUVs) has grown significantly, and one of the major challenges remains establishing reliable underwater communication among UUVs. This case is especially true in a multi-UUV setting where tethered communication is not an option. This research focuses on designing a cost-efficient, short distance optical communication system capable of supporting formation control of multiple UUVs. Although light attenuation underwater significantly degrades communication ranges, experimental results show that optical communication can achieve distances of almost 20 meters in clear water by utilizing a simple 10-Watt LED transmitter (with larger distances …

Critical Language Scholarship To Take Wahju ’24 To Indonesia, Keith Testa

UNH Today Archive

No abstract provided.

Physiological And Biochemical Responses To Salt And Cadmium Stress And It’S Amelioration By Exogenous Application Of Polyamines In Hybrid Poplar (Populus Nigra X Maximowiczii, Clone Nm6), Sanchari Kundu

Master's Theses and Capstones

The importance of nitrogen metabolism in plants in response to abiotic stress is widely known. Plant growth is severely hampered by abiotic stress, and appropriate nitrogen supply helps in plant growth and improves stress tolerance. At the same time, the regulation of nitrogen metabolism depends on the stress intensity. Abiotic stress can occur due to natural calamities, improper use of hazardous chemicals from industries, and careless environmental dumping of these chemicals. Hence, soils contaminated with hazardous chemicals are a significant threat to the development and yield of plants. Plants are affected by various abiotic stresses, i.e., salt, drought, and heavy …

Mesoscale Experimental Protocol For Oil Movement Under Sea Ice, Jessica Manning

Master's Theses and Capstones

Decreasing sea ice extent in the Arctic provides more opportunities for human activities (e.g., shipping, development) and increases the likelihood of Arctic oil spills. Sea ice adds complexity into oil spill models because it has significant impacts on oil fate and behavior. Understanding these complexities will improve Arctic oil spill responses and mitigate impacts. As part of a recent project on Arctic response conducted by the Coastal Response Research Center (CRRC), sea ice and oil spill modelers concluded that further research is needed to model the behavior of oil under ice. The underside of sea ice is affected by waves, …

Improving The Sustainability Of The Channeled Whelk (Busycotypus Canaliculatus) Fishery: An Investigation Into Alternative Baits, Feeding Behavior, And Circadian Rhythms, Mary Munley

Master's Theses and Capstones

The channeled whelk (Busycotypus canaliculatus) is a large predatory marine gastropod that supports an important commercial fishery along the eastern coast of the United States. Channeled whelk fisheries are state regulated, with each state enforcing slightly different regulations. In Massachusetts, the fishery is regulated by the Massachusetts’s Division of Marine Fisheries (MA DMF). Massachusetts’ channeled whelk landings peaked in 2012 at 3.6 million lbs., valued at $6.2 million. Since 2012, landings have decreased, 766,975 lbs. were landed in 2021 worth $3.1 million. Catch per unit effort (CPUE; lbs per trap haul) has also steadily decreased, indicating the resource is likely …

Preliminary Validation Of A High-Performance Electrothermal Model Of An Electromagnetic Heating System, Jeremiah Vardaman

Master's Theses and Capstones

To aid in the design and development of an electrical induction thermoplastic pipe-fusion product, Ansys HFSS, an electromagnetics simulation package, and Ansys Mechanical, a thermal dynamics simulation package, were used to simulate a model of the pipe-fusion product. HFSS estimated the currents induced in conductive susceptors embedded in the pipe fitting. Then, Mechanical estimated temperature dynamics on the susceptors as a function of the induced currents. The heat generated by induced currents on the susceptors increases temperatures in the vicinity of the region to be fused. The increased temperature of the thermoplastic facilitates a pipe fuse. The simulation results were …

The Effect Of Hypoxia On Gli Expression And Their Downstream Effect In Waldenström Macroglobulinemia, Estefania Yzar-Garcia

Master's Theses and Capstones

Waldenström macroglobulinemia (WM) is a sub-type of non-Hodgkin lymphoma associated with excess secretion of immunoglobulin M (IgM) and the infiltration of the bone marrow by lymphoplasmacytic cells. There is a dynamic oxygen gradient consumption and diffusion in the tumor microenvironment, leading to regions of hypoxia (1-3% O2 concentration). GLI1, GLI2 and GLI3 are members of the family of Kruppel-like factors with highly conserved Zinc finger DNA-binding domains in mammalian cells. They signal trough the Hedgehog pathway which is a conserved pathway among species and is crucial in fundamental development processes and tissue homeostasis. They can also signal trough non-canonical pathways …

Dynamic Analysis Of Floating Offshore Wind Turbines Under Extreme Operational Conditions, Ailish Bozzo

Master's Theses and Capstones

Non-renewable energy sources such as fossil fuels have been the primary source of power generation around the world for decades. With these non-renewable energy sources rapidly depleting, the focus has switched to renewable, more environmentally friendly sources of energy, including wind energy. According to the Offshore Wind Market Report 2022, the U.S. has approximately 42 MW of offshore wind energy in operation, with 932 MW under construction and 18,581 MW in the permitting phase (Musial et al., 2022). Much of this potential comes from floating offshore wind turbines (FOWT) in waters greater than 60m of depth, where the winds are …

Towards Automation Of Volunteered And Authoritative Bathymetric Data Comparisons, Patrick Debroisse

Master's Theses and Capstones

Towards Automation of Volunteered and AuthoritativeBathymetric Data Comparisons By LT Patrick J. Debroisse, NOAA University of New Hampshire, May 2023 Hydrographic data, including sonar, positioning, and oceanographic data used for sea floor mapping, are used all over the world for many purposes. Large volumes of high-quality hydrographic data are required to create high-accuracy nautical charts and bathymetric models required by national defense, resource management, shipping, and scientific interest groups, among others. However, across the world, the amount of highquality data available is limited. Volunteered Bathymetric Information (VBI) is a relatively untapped data source that could be used in many ways …

Shallow Geothermal Energy Systems In The Northeastern United States: System Distancing And Policy Considerations, Aeowyn Kendall

Master's Theses and Capstones

Climate change is an existential threat to human society, and mitigating some of the worst impacts will require electrifying the energy sector and reaching net zero emissions by mid-century (Intergovernmental Panel on Climate Change, 2018). Geothermal energy, specifically ground-source heat pumps, can help to meet winter heating demand in the Northeastern United States. This technology, as well as the various mechanisms that would aid its expansion, are still underdeveloped but have vast potential. A central factor to consider in energy transition work is how energy decisions are made by people within the context of both social and physical system constraints …

Quantifying And Modeling The Effects Of Internal Waves On Synthetic Aperture Sonar, Nicholas Anthony La Manna

Master's Theses and Capstones

Synthetic aperture sonar (SAS) is based on synthetic aperture radar, with a number of key factors increasing the complexity of data collection. One of the assumptions made with respect to SAS image reconstruction is the presence of a constant sound speed. As a nearfield imaging system, SAS is sensitive to the breaking of this assumption. The sound speed in the ocean varies with depth. Variations in sound speed can come in the form of internal waves. Internal waves propagating up the slope of the continental shelf are subject to breaking mechanisms that result in the propagation of boluses shoreward. Internal …

Automatic Bankfull Width Extraction Of New Hampshire And Vermont Rivers, Desmond Kager

Master's Theses and Capstones

Understanding a river's morphology can help scientists measure erosion, improve understanding of flood hazards and better estimate riparian habitat. While there have been many developments in the field of fluvial geomorphology, there are still many challenges that exist in efficiently and accurately quantifying various important river metrics, such as the location of channel banks. Conducting field surveys of riverbanks is expensive and time consuming, leading many scientists to shift towards remote sensing techniques to measure river morphological features. This project aims to extract bankfull width measurements automatically from high-resolution Digital Elevation Models (DEMs) of rivers located in New Hampshire and …

Changing Winters And The Vernal Window In Northwestern Wyoming, Julia Olson

Master's Theses and Capstones

The timing of snowmelt and the onset of spring is changing in the Mountain West of the United States. The period between snow disappearance and vegetation green-up, known as the vernal window, is also changing, with implications for ecohydrology, the regional water supply, and the economy. Here, I present the first detailed analysis of the vernal window in the Mountain West at the ecosystem scale, focusing specifically on northwestern Wyoming in the Greater Yellowstone Area (GYA). I used in-situ and satellite data to address four objectives: 1) to understand how winter intensity and duration are changing, 2) to understand when …

Machine Vision Based Speed Control And Its Application In Autonomous Uav Snow Depth Remote Sensing, Jacob Matthew Shaker

Master's Theses and Capstones

Light Detection And Ranging (LiDAR) sensors are an effective way to unobtrusively measure snow depth using Uncrewed Aerial Vehicles (UAVs). LiDAR snow depth estimation performs poorly when scanning obstructed areas due to a reduction in LiDAR ground returns. When using Uncrewed Aerial Systems (UAS) to measure snow depth in forests, trees obstruct LiDAR laser pulses from penetrating to the forest floor, thus, reducing the number of returns. Decreasing UAV flight speed increases the total number of returns which, in turn, can improve snow depth estimates but reduces the sampling extent. In this work, it is shown that Machine Vision (MV) …

Advancing A Design For Trusted Community Bathymetry, Daniel Tauriello

Master's Theses and Capstones

The design for a Trusted Community Bathymetry (TCB) system, presented in Calder et al., 2020, demonstrates a data collection system capable of collecting precisely geo-referenced depth soundings from any navigational echosounder installed on a volunteer vessel. The TCB system is capable of autonomously determining any vertical installation offset with respect to the waterline, and provides sufficient guarantees of data quality to allow the soundings to be considered for hydrographic use.

This thesis presents two contributions to advance the original TCB system design. First, it capitalizes on the widespread availability of low-cost sidescan modules in the recreational sonar market by describing …

Crystal Plasticity Finite Element Modeling Of Magnesium Alloys And Experimental Characterization Of A Trip High Entropy Alloy, Jacob Weiss

Master's Theses and Capstones

This work presents two crystal plasticity finite element studies on magnesium alloys and an experimental characterization of a high entropy alloy. The first of two crystal plasticity studies presents a high strain rate deformation characterization via a split Hopkinson bar Taylor impact of a WE43 magnesium alloy. This study showed that crystal plasticity finite element modeling (CPFE) was able to model WE43 texture evolution, twin volume fraction along the length of the cylinder, and anisotropy with four different material orientations at high strain rates when compared to experimental data. The second study investigated the Taylor-type model homogenization response of the …

Using Unpiloted Aerial Vehicle Structure From Motion And Snowmodel To Map Spatial Distribution Of Wind Deposited Snow In Mount Washington, Nh Avalanche Terrain, Cameron Wagner

Master's Theses and Capstones

East of the Rocky Mountains, United States avalanche terrain is almost exclusive to Mount Washington, New Hampshire. Mount Washington’s east-aspect glacial cirques are subject to frequent wind slab avalanche problems due to high winds and ample snowfall in fetch areas above the cirques. Quantification of these slabs’ location, extent, and depth is an integral part of avalanche forecasting and risk assessment. This research used SnowModel, a spatially distributed snow-evolution model, to simulate wind slab depth maps using Mount Washington Observatory meteorologic station data on a 1 m grid. SnowModel’s SnowTran-3D, a snow redistribution by wind algorithm, is tested for one …

Art In Climate Argumentation, Matthew Morely

Comm-entary

My paper examines the role of art in the environmental crisis that we are currently facing. I believe that the climate emergency is largely the result of a disconnect between the scientific community and the non-scientific community. In other words, scientists are trying to portray scientific information to a non-scientist demographic. I believe that if we are to prevail during these uncertain times, we need a middleman between these two parties. We need someone who is able to take the information that the scientists are bringing to the table and break it down to non-scientists in a way that makes …

Unh Announces 2023 Granite State Award And Honorary Degree Recipients, Erika Mantz

Media Relations

No abstract provided.

Unh Announces Annual Poetry Festival & Programming, Erika L. Mantz

Media Relations

No abstract provided.

Clean Air Unh, Anna Madden

Sustainability Institute Blog

No abstract provided.

Clean Air Unh, Anna Madden

Sustainability Institute Blog

No abstract provided.

Establishing Building Blocks Of A Career, Anna Madden

Sustainability Institute Blog

No abstract provided.

Establishing Building Blocks Of A Career, Anna Madden

Sustainability Institute Blog

No abstract provided.

Evaluation Of The 2022 Globe U.S. Local Student Research Symposia: Temporary Pandemic Alternative Or Future Complementary Activity?, Eleanor M. Jaffee, Globe U.S. Coordination Office

Publications and Media

No abstract provided.

Office Of Research, Economic Engagement And Outreach Update, April 19, 2023, Office Of Research, Economic Engagement And Outreach

Office of Research, Economic Engagement and Outreach

No abstract provided.

Shoals Marine Laboratory Offers Mom An Island Garden Adventure, Robbin Ray

Media Relations

No abstract provided.

Annual Graduate Research Conference Continues To Build Momentum, Sarah Earle

UNH Today Archive

No abstract provided.