Physics Commons^™

Supernovae Distributions And Their Relationships To Classes Of Stars, Sydney Menne

Arts & Sciences Undergraduate Showcase

Aims. Data from astronomical catalogs are plotted as spatial distributions of stars and supernovae throughout the Milky Way galaxy and the universe. I examined correlations seen between the luminosity classes of stars, types of supernovae, and selection effects observed in the data.

Methods. Data was gathered from three catalogs; the Gliese Catalog of Nearby Stars, the Tycho-2 Catalog, and the Open Supernova Catalog. Graphs and diagrams were created to visualize the distributions of the stellar luminosity classes and supernova types at different radial distances from the Sun. Trendlines were fit through the data to examine extrapolated predictions.

Results/Conclusions. Documenting stars …

The Ideal Dog, Owen Graham

Fall Student Research Symposium 2020

The goal of this project was to look into all of the different jobs or tasks that we as humans have dogs perform and try to pinpoint what exactly it is that makes a dog ideal for each task. After identifying desirable characteristics, I considered physical traits in order to create an ideal dog that would be able to perform the greatest number of jobs possible.

National Security & Climate Change, Madison Mortensen

Fall Student Research Symposium 2020

Certain scientific subjects are often divisive or technical, which makes those topics difficult to discuss with audiences outside the scientific sphere. One way of getting around this obstacle is to cater scientific communication to different target audiences to cut through any audience biases. In order to accomplish that, a communicator needs to understand the relationship between audiences' worldviews, and what they know, feel, and do regarding the subject at hand, and then how that relationship influences the types of media audiences trust and to which they respond positively. The following study investigates the worldviews of a military audience with respect …

Galactic Sources In Gamma-Ray Diffuse Emission, Melissa Rasmussen

Fall Student Research Symposium 2020

The Fermi Large Area Telescope (LAT) has detected hundreds of Galactic gamma-ray sources, most of them pulsars. But the Galaxy contains tens of thousands of such sources which are still undetected due to their low flux, or because of conflation of the foreground with sources. Characterizing the general properties of detected sources would allow us to estimate the contribution to the diffuse Galactic emission from these undetected sources and in turn it would help the detection of new sources and even searches for dark matter. We present updates on our long-term effort to characterize the general properties of Galactic gamma-ray …

Dog-Headed: Outcast To All, Wesley Mills

Fall Student Research Symposium 2020

Cynocephali are a group of mythological, dog-headed, humans that appear throughout various cultures. Despite the wide range of region and time period in which they are used, they consistently represent a quality of "otherness".

Modeling Reflectance Spectra Of Nanorod Arrays With Arrays Of Light Sources, Christian Lange

Fall Student Research Symposium 2020

It is known that carbon-nanotube forests, nanopillar arrays, and other formations of quasi-periodic nanostructures of various materials (semiconductors, semimetals, and metals) can display a very low light reflectance over a wide range of wavelengths, and that the reflectance eventually starts to rise beyond an onset wavelength. As these materials can be quite reflective in planar form, this phenomenon indicates that morphology rather than material plays a dominant role. However, a quantitative analysis of the reflectance spectra of periodic structures has yet to be established. As a first step, we use an array of light sources to model the reflection from …

The Pope, The Poor, The Planet, Jose Ramon T. Villarin

Magisterial Lectures

Fr. Jett discusses the complex nature of environmental issues, focusing on climate change as an example, the need to shift to a more integral ecology, and what we need to do as a community and as individuals.

Speaker: Fr Jose Ramon T Villarin SJ, is an atmospheric scientist, Jesuit, and outgoing President of the Ateneo De Manila University (2010-2020). Before being elected as University President, he was president of Xavier University-Ateneo De Cagayan. His research and contribution in the field of climate change earned him a seat as the lead reviewer of the UN Convention on Climate Change.

Pathways Of Hope, Jose Ramon T. Villarin

Magisterial Lectures

In part two of Fr. Jett’s lecture, he discusses the ways in which we can respond to the ecological problems that we face.

Speaker: Fr Jose Ramon T Villarin SJ, is an atmospheric scientist, Jesuit, and outgoing President of the Ateneo De Manila University (2010-2020). Before being elected as University President, he was president of Xavier University-Ateneo De Cagayan. His research and contribution in the field of climate change earned him a seat as the lead reviewer of the UN Convention on Climate Change.

Crosssections, Summer 2020, University Of Northern Iowa. Department Of Physics.

CrossSections

Inside This Issue:
--Faculty Profile Pavel Lukashev
--Department Happenings
--Focus on Students
--Physics Education
--Alumni Profile Wes Golden
--Alumni News
--Retrospective
--New Physics
--Support the Department

The Origin Of The Universe: A Vast And Expanding Universe, Bienvenido F. Nebres Sj

Magisterial Lectures

In this video, Fr. Ben delivers a lecture for the course entitled Science, Technology, and Society (STS 10) about the beginnings of our universe: from the big bang, to now.

Speaker: Fr Bienvenido F Nebres, SJ is a Filipino scientist, mathematician, and Jesuit who was the longest-serving university president of the Ateneo de Manila University. He served as University President from 1993-2011. He received the title of National Scientist of The Philippines in 2011 for his contributions in the fields of STEM, education, and development.

The Origin Of The Universe: An Amazing And Mysterious Universe, Bienvenido F. Nebres Sj

Magisterial Lectures

In this video, Fr. Ben delivers a lecture for the course entitled Science, Technology, and Society (STS 10) about blackholes, stardust, and the forces that govern the universe.

Speaker: Fr Bienvenido F. Nebres S.J. is a Filipino scientist, mathematician, and Jesuit who was the longest-serving university president of the Ateneo de Manila University. He served as University President from 1993-2011. He received the title of National Scientist of The Philippines in 2011 for his contributions in the fields of STEM, education, and development.

Data Supporting The Paper "The Role Of Turbulent Fluctuations In Aerosol Activation And Cloud Formation", Prasanth Prabhakaran, Abu Sayeed Md Shawon, Greg Kinney, Subin Thomas, Will Cantrell, Raymond Shaw

Data Files

This data supports the following paper:

Prasanth Prabhakaran, Abu Sayeed Md Shawon, Gregory Kinney, Subin Thomas, Will Cantrell and Raymond A. Shaw, “The role of turbulent fluctuations in aerosol activation and cloud formation”, Proceedings of the National Academy of Sciences (2020), in review.

Charged Particle Identification Using Calorimetry And Tracking At The Belle Ii Experiment, Joseph T. Nunziata, Atanu Pathak, Swagato Banerjee

Undergraduate Arts and Research Showcase

Particle identification (PID) is a critical procedure carried out in high energy physics experiments in search of new physics. When particles of matter (i.e., an electron) and antimatter (i.e., a positron) collide, new types of particles may form given certain conditions. Such particles may be classified as hadrons--which feel the strong nuclear force--and leptons--which do not. Identifying particles at the Belle II experiment is done by combining the measurement of energy deposited in the calorimeter with the measurement of track momentum in the tracker. In a tau lepton ($\tau$) decay sample, particles such as electrons, muons, and pions may be …

Size-Controlled Synthesis Of Nickel Nanoparticles Enclosed In Carbon Nanocages, Felicity Peebles, Grigorii Rudakov, Gamini U. Sumanasekera

Undergraduate Arts and Research Showcase

We have demonstrated a simple, scalable, and tunable method of obtaining densely packed Ni Nanoparticles encapsulated in Carbon Nanocages (Ni@CNCs). Using a facile method, it was shown that via a simple annealing process of precursor based on nickel acetate and citric acid, Ni@CNCs with sizes varying from 5 to 20 nm can be synthesized by changing the heating ramp rate during the synthesis from 25 to 53 °C/min. The final temperature of 600 °C was held for 10 min, and was the same for all the samples. X-Ray Diffraction (XRD) multiple peaks analysis was performed to show large Ni nanoparticles …

Sulfur Dioxide From The Atmospheric Chemistry Experiment Satellite, Doug Cameron

College of Sciences Posters

The version 4.0 dataset from the Atmospheric Chemistry Experiment – Fourier Transform Spectrometer (ACE-FTS) on SCISAT, released in March of 2019, has sulfur dioxide (SO₂) volume mixing ratio (VMR) profiles as a routine data product. From this dataset, global SO₂ distributions between the altitudes of 10.5 km and 23.5 km are analyzed. The global distribution of all SO₂ VMR data by altitude is broken down into 30° and 5° latitude zones. Seasonality of the global SO₂ distribution is explored. Volcanic SO₂ plumes are isolated in the dataset and compared with extinction data from the …

Ramps And Toy Cars Activity Plan, Admin Stem For Success, Emma Hamza, Natalie Wilson

STEM for Success Showcase

No abstract provided.

Three-Dimensional Measurement Of Electron Temperature And Density In A Split Ring Resonator Microplasma, Neil Laya

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.

Classifying Aurora Borealis: From Human Eyes To Machine Vision, Caleb Dowell

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.

Brownstein (Kenneth Robert) Papers, 1967-2001, Special Collections, Raymond H. Fogler Library, University Of Maine

Finding Aids

Kenneth Brownstein graduated with a Ph.D. in physics from Rensselaer Polytechnic Institute. He came to the University of Maine in 1965 as a professor in the Department of Physics and Astronomy. Brownstein was a prolific author of articles and served as the chair of the Department of Physics and Astronomy from 1992 to 1998. Brownstein retired in 2004 with emeritus status. Brownstein died in 2008.

The records mainly contain textual information but also contains some computer discs containing manuscripts of Brownstein's text book on quantum mechanics. Also, includes a facsimile of an obituary for Brownstein, copies of various articles by …

Validation Of Geant4 Upgrade To Model Response From Muons Passing Through The Klm Detector At The Belle Ii Experiment., Stephen C Temple, Swagato Banerjee Ph.D, David N. Brown Ph.D

Undergraduate Arts and Research Showcase

The KLM detector or K_⁰L- Muon Detector is equipped on the outermost layer of the Belle II detector structure. The detector is designed to detect the K_L mesons and muons above 600 MeV/c with high efficiency. The barrel shaped region around the intersection point covers a polar angular range of 45° to 125° while the forward and backward end caps extend this range to 20° to 155°. With the upgraded Geant4 model we observe the effectiveness of the new PhysicsList.

Validation Of Upgrade Of The Geant4 Simulation Toolkit To Model The Responses From Top And Arich Detectors, Dominic M Smith, Mason A. Ross, Swagato Banerjee, Davis N. Brown

Undergraduate Arts and Research Showcase

Belle II is the next generation B-Factory experiment at the world's highest luminosity accelerator the SuperKEKB collider, which is designed to collect 50 times more data than the previous generation experiments. A hallmark feature of B-Factory experiments is to use novel characteristics of Cherenkov detectors for identification of the flavor of charged particles passing through the detector. The TOP and the ARICH detectors can identify charged pions and kaons with high precision. The response to the passage of high energetic particles in the detector is modeled with the Geant4 simulation toolkit. Here we compare the performances of these two detectors …

Validating The Belle2 Physicslist In Geant4 V10.1.2, Dustyn D Hofer, Swagato Banerjee Dr., David N. Brown Dr., Atanu Pathak

Undergraduate Arts and Research Showcase

Since the start of software development at the Belle II experiment operating at the KEK national laboratory in Tsukuba, Japan, the simulation tool kit Geant4 has undergone several updates. As a member in the ongoing collaboration, the University of Louisville’s High Energy Physics (HEP) group is striving to validate newer versions of Geant4 to maximize improvements of physics performance.We have simulated the performance of a new physics list sub-module, the "Belle2 PhysicsList", with improved modeling of hadronic shower shape and standard electromagnetic processes. Using a reconstruction-based selection procedure on tau-pair events decaying into a final state consisting ofe lectrons, photons, …

Modeling Decay Dynamics In Systems Of Nanoparticles, Jacob Smith

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.

Magnetic Hyperthermia For Cancer Treatment, Çiğdem Elif Demirci Dönmez, Adem Dönmez

Science and Mathematical Science

The obtained results in this study clearly indicates the enhancing effect of polymer coating on hyperthermia efficiency. In a very recent study, the efficiency of the niclosamide-loaded hyperbranched polymerfunctionalized magnetic nanoparticles on mediated hyperthermia and niclosamide (an anticancer drug) bimodel therapy were investigated. The results in this study indicated that polymerfunctionalized nanoparticles showed sufficient temperature gain for magnetic hyperthermia.