Digital Commons Network^™

Developing A Monte Carlo Simulation For Time- Series Analysis Of Actinium-225 Decay, Victoria Wood

The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-B

This report describes the development of a script programmed in the Python language designed to simulate radioactive decay using Monte Carlo methods. This is to conduct analysis on the equilibrium behavior of a specific radioactive decay chain, replacing the traditional method of deriving a mathematical representation via differential equations. The resulting script produces a stacked histogram illustrating the decay of Actinium-225 over time and more closely models the potential for irregularities in the natural phenomenon. The script has potential applications in nuclear imaging and medical physics.

Modeling The Motion Of A Volleyball With Spin, Julian Ricardo

The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-B

Though a qualitative understanding of how spin affects a ball’s trajectory can be easily developed, a quantitative one is relatively difficult to hone. Additionally, although projectile motion is an extensively covered topic in introductory physics courses, friction and drag—let alone spin—receive little to no attention. Here we use a volleyball and video modeling software to compare the behavior of a non-spinning ball with one that has topspin in order to assess the accuracy of our various models incorporating drag and the Magnus effect.

Electrical And Magnetic Properties Of High Temperature Superconductors Using Varying Forms Of Data Acquisition, Aryn M. Hays, Lindsay Bechtel, Colton Turbeville, Anthony Johnsen, Chris A. Tanner

The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-B

High temperature superconductors (HTS) are materials that display superconducting properties at temperatures above that of liquid nitrogen. Possible applications and ease of use in a typical physics laboratory make them interesting systems to study. In this experiment we measured the critical temperatures of two samples made of different HTS materials. We also devised a method that makes taking data automated.

Shape And Size Matter For Projectile Drag, Daniel Gordon Ang

The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-B

Newtonian mechanics is a fundamental building block of physics education, allowing us to characterize the motion of various objects in every day life. Here, we set out to investigate the effect of air resistance on projectile motion. We use high-speed cameras to record the flight of three different projectiles and compare this motion to a trajectory generated based on our theoretical model. We find that we are able to fit our model to the actual trajectory reasonably well, and find evidence that drag depends on the size and shape of the projectile.

Modeling A Swinging Atwood Machine, Parker W. Moody

The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-B

The motion of a Swinging Atwood Machine is a difficult to solve for using Newtonian Mechanics. Lagrangian Mechanics, on the other hand, is extremely useful tool for a system that can seem overwhelmingly difficult to solve in Newtonian Mechanics. In this Lab we find the Lagrangian for this Swinging Atwood system, solve for the equation of motion, and compare our model to that of the observed motion of the system. Our model provides a good approximation of the motion, with small discrepancies due to the unknown mass of our pulley and dissipative forces.

User Information Needs And Information Seeking Behaviour Of Physics Department At The University Of Burdwan, Amit Kumar Das, Dr. Sukumar Mandal

Library Philosophy and Practice (e-journal)

Purpose – The study found on the University of Burdwan physics department faculties and research scholars’ information needs and information seeking behaviour. The purpose is to find out the information needs, source use, satisfaction level, and improvement needs for library infrastructure, sources and services.

Methodology – In this information needs and seeking behaviour study, two sets online questionnaire has been developed to achieve the objective. Only physics faculties and regular registered research scholars (session 2011 – 2020) in the University of Burdwan have been selected as main respondents. Data has been collected using Google form. Online questionnaire have been served …

Atomic Force Microscopy, Tyler Lane

The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-B

The goal of this experiment is to use the Atomic Force Microscope (AFM) to get images of selected items and determine some distances of the characteristics of each sample. The ultimate goal is to measure the length of a nanotube, but unfortunately there were none left on the slide that was supposed to contain them. From the results of the lab and the lab manual of “companies” with possible lengths for each sample, Lindaas-Lahti Industries seems to have the best fit overall.

Decay Time Of A Damped Pendulum, Scott D. Froehle

The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-B

A number of labs have been conducted to find the equation for a damped pendulum. A damped pendulum's behavior will be analyzed and fit to this equation. This lab focused on tau, the decay constant. It was hypothesized that the decay constant would be greater with increasing initial angles, ultimately because of the pendulum's greater velocity. A pendulum was hung on a rotary motion sensor to detect its activity when released from different angles from the vertical. Its behavior was observed and fit to the equation for the behavior of a damped pendulum. It was found that decay time and …

The Hunt For The “Holy Grail”: Condensed Tannins In Perennial Forage Legumes, John R. Caradus, Christine R. Voisey, G. R. Cousin, D. R. Woodfield, A. Blanc, M. B. Roldan

IGC Proceedings (1977-2023)

A recent advance using molecular biology has identified a transcription factor or master switch that can ‘turn on’ the condensed tannin pathway present in white clover, and with the appropriate promoters allows biologically significant levels of condensed tannin expression in leaf tissue. In vitro tests have demonstrated that the condensed tannins produced in white clover leaves can bind protein at a pH 6.5, as found in the rumen, and then release them at pH 2.5, the pH in the abomasum, before entering the small intestine for amino acid absorption. Additional tests have demonstrated that these condensed tannins can reduce methane …

How Random Incidents Affect Travel-Time Distributions, Melike Baykal-Gürsoy, Andrew Reed Benton, Pedro Cesar Lopes Gerum, Marcelo Figueroa Candia

Supply Chain Management

We present a novel analytical model to approximate the travel-time distribution of vehicles traversing a freeway corridor that experiences random quality of service degradations due to non-recurrent incidents. The proposed model derives the generating function of travel times in closed-form using clearance time, incident frequency and severity, and other ordinary traffic characteristics. We validate the model using data from a freeway corridor where weather events and traffic accidents serve as the principal causes of service degradation. The resulting model is equivalent in performance to widely used methodologies while uniquely providing a clear connection on how incidents affect travel time distribution. …

Immunometabolic Dysregulation At The Intersection Of Obesity And Covid-19, Collins N. Khwatenge, Marquette Pate, Laura C. Miller, Yongming Sang

Agricultural and Environmental Sciences Faculty Research

Obesity prevails worldwide to an increasing effect. For example, up to 42% of American adults are considered obese. Obese individuals are prone to a variety of complications of metabolic disorders including diabetes mellitus, hypertension, cardiovascular disease, and chronic kidney disease. Recent meta-analyses of clinical studies in patient cohorts in the ongoing coronavirus-disease 2019 (COVID-19) pandemic indicate that the presence of obesity and relevant disorders is linked to a more severe prognosis of COVID-19. Given the significance of obesity in COVID-19 progression, we provide a review of host metabolic and immune responses in the immunometabolic dysregulation exaggerated by obesity and the …

Governors State Offers Winter Steam Camp, Office Of Marketing And Communications

Press Releases

No abstract provided.

Selective Disinfection Based On Directional Ultraviolet Irradiation And Artificial Intelligence, Ben Zierdt, Taichu Shi, Thomas Degroat, Sam Furman, Nicholas Papas, Zachary Smoot, Hong Zhang

Henry M. Rowan College of Engineering Departmental Research

Ultraviolet disinfection has been proven to be effective for surface sanitation. Traditional ultraviolet disinfection systems generate omnidirectional radiation, which introduces safety concerns regarding human exposure. Large scale disinfection must be performed without humans present, which limits the time efficiency of disinfection. We propose and experimentally demonstrate a targeted ultraviolet disinfection system using a combination of robotics, lasers, and deep learning. The system uses a laser-galvo and a camera mounted on a two-axis gimbal running a custom deep learning algorithm. This allows ultraviolet radiation to be applied to any surface in the room where it is mounted, and the algorithm ensures …

Self-Assembly Of Porous Structures From A Binary Mixture Of Lobed Patchy Particles, Sanjib Paul, Harish Vashisth

New Hampshire EPSCoR

We report simulation studies on the self-assembly of a binary mixture of snowman and dumbbell shaped lobed particles. Depending on the lobe size and temperature, different types of self-assembled structures (random aggregates, spherical aggregates, liquid droplets, amorphous wire-like structures, amorphous ring structures, crystalline structures) are observed. At lower temperatures, heterogeneous structures are formed for lobed particles of both shapes. At higher temperatures, homogeneous self-assembled structures are formed mainly by the dumbbell shaped particles, while the snowman shaped particles remain in a dissociated state. We also investigated the porosities of self-assembled structures. The pore diameters in self-assemblies increased with an increase …

Use Of Internet Facility By The Users Of District Central Libraries In Rayalaseema Region Of A.P., India- A Study., Dr B. Deenadhayalu

Library Philosophy and Practice (e-journal)

Abraham Lincoln’s proverbial remark concerning the definition and meaning of democracy, is equally applicable in the context of public library-it is an institution ‘for the people, by the people and of the people. The District Central Libraries are an important component of the public library system in Andhra Pradesh (A.P). Being located in the district headquarters they stand as models to be emulated by other public libraries in the districts. In this era of information technology, people are quick to gather information using the internet. Therefore, there is a need to study the internet facilities of the District Central Libraries …

Global Health Advocacy: Building A Foundation For Transformative Impact At The United Nations And Beyond, Pennie Sessler Branden, Valerie Clary-Muronda, Janice E. Hawkins, Dania Itani Mousa, Aric Shimek

General Webinars

Globally, nurses are being called upon to advocate for health equity. At the United Nations (UN), Sigma works to advance health equity through the Sustainable Development Goals (SDGs). Join Sigma's UN representatives for ideas on local actions and global efforts that nurses can engage in to build a healthier world.

Virtual Power Plant Control For Large Residential Communities Using Hvac Systems For Energy Storage, Huangjie Gong, Evan S. Jones, Rosemary E. Alden, Andrew G. Frye, Donald G. Colliver, Dan M. Ionel

Power and Energy Institute of Kentucky Faculty Publications

Heating, ventilation, and air-conditioning (HVAC) systems use the most electricity of any household appliance in residential communities. HVAC system modeling facilitates the study of demand response (DR) at both the residential and power system levels. In this article, the equivalent thermal model of a reference house is proposed. Parameters for the reference house were determined based on the systematic study of experimental data obtained from fully instrumented field demonstrators. Energy storage capacity of HVAC systems is calculated and an equivalent state-of-charge is defined. The uniformity between HVAC systems and battery energy storage system is demonstrated by DR control. The aggregated …

Daily Eastern News: October 19, 2021, Eastern Illinois University

October

No abstract provided.

Academic Senate - Agenda, 10/19/2021, Academic Senate

Academic Senate Agendas

No abstract provided.

Customizable Aptamer Transducer Network Designed For Feed-Forward Coupling, Tim Hachigian, Drew Lysne, Elton Graugnard, Jeunghoon Lee

Materials Science and Engineering Faculty Publications and Presentations

Solution-based biosensors that utilize aptamers have been engineered in a variety of formats to detect a range of analytes for both medical and environmental applications. However, since aptamers have fixed base sequences, incorporation of aptamers into DNA strand displacement networks for feed-forward signal amplification and processing requires significant redesign of downstream DNA reaction networks. We designed a novel aptamer transduction network that releases customizable output domains, which can then be used to initiate downstream strand displacement reaction networks without any sequence redesign of the downstream reaction networks. In our aptamer transducer (AT), aptamer input domains are independent of output domains …

Butte Priority Soils Operable Unit (Bpsou) Insufficiently Reclaimed Sites - Field Sampling And Investigation Plan (Fsp) Bres No. 104 - Colorado Dump – Final, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Supporting Teaching And Learning Reform In College Mathematics: Finding Value In Communities Of Practice, Kelly Gomez Johnson, Paula M. Jakopovic, Christine Von Renesse

Teacher Education Faculty Publications

Improving college STEM (science, technology, engineering, mathematics) student learning outcomes is an ongoing area of focus in Institutions of Higher Education (IHE). This reform includes challenging, changing, and adapting both teaching practices and the learning environment. Communities of practice (CoPs) can support faculty in making these shifts; however, creating large-scale instructional changes in STEM education requires a more careful look at the existing systems and structures in place. In this paper, we investigate a network of regional CoPs composed mainly of mathematics faculty from IHE focused on teaching with inquiry methods. Understanding what faculty need and value to support their …

David Magee Launches Book, Charles Kelley Performs Nov. 2, Tina Hahn

University of Mississippi News

No abstract provided.

Nusat 1: Northern Utah Satellite, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "NUSAT I: Northern Utah Satellite" from October 19, 2021.

Mast: Multi Application Survivable Tether, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "MAST: Multi Application Survivable Tether" from October 19, 2021.

The Content And Quality Of Publicly Available Information About Congenital Diaphragmatic Hernia: Descriptive Study, Frank Coyle Soltys, Kimi Spilo, Mary C Politi

Open Access Publications

BACKGROUND: Congenital diaphragmatic hernia (CDH) diagnosis in an infant is distressing for parents. Parents often feel unable to absorb the complexities of CDH during prenatal consultations and use the internet to supplement their knowledge and decision making.

OBJECTIVE: We aimed to examine the content and quality of publicly available, internet-based CDH information.

METHODS: We conducted internet searches across 2 popular search engines (Google and Bing). Websites were included if they contained CDH information and were publicly available. We developed a coding instrument to evaluate websites. Two coders (FS and KS) were trained, achieved interrater reliability, and rated remaining websites independently. …

Future Trends In Noise Control Technology, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

Although acoustics plays an important role in noise control, noise control is arguably more difficult than acoustics owing to the constraints that are usually imposed on noise control solutions by manufacturers. That is, ideally, noise control solutions should occupy no space, weigh nothing, cost nothing, not impact the operation of the device being treated, and remain effective for twenty years without maintenance. Hence, identifying effective noise control solutions is a challenging, multidimensional problem. In this presentation, future trends and opportunities in noise control will be highlighted in four categories: targets, measurement techniques, predictive tools, and noise control methods and materials.

Future Trends In Noise Control Materials: Architectured To Nano, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

Stuart Bolton, with Purdue University’s Ray W. Herrick Laboratories, presented keynote remarks about modern trends in noise control materials, from architectured to nano. He expressed some of his own views about important factors for consideration, and shared highlights from a spring 2021 Purdue symposium on poro-elastic materials. From a manufacturer’s perspective, cost is usually the most important factor associated with a noise control material, followed by safety, weight, volume, recyclability, and so-called “embedded energy,” with acoustical performance very low on the list. Cost-effectiveness is therefore a critical consideration, along with other factors such as efficiency in terms of space and …

Solvent-Free Solid-State Lithium Battery Based On Lifepo₄ And Mwcnt/Peo/Pvdf-Hfp For High-Temperature Applications, Han Yu, Ye Jin, Guodong David Zhan, Xinhua Liang

Chemical and Biochemical Engineering Faculty Research & Creative Works

Rechargeable lithium-ion batteries (LIBs) have a wide range of applications but face challenges in harsh working or operating environments at high temperatures. In this work, a solid polymer electrolyte with MWCNT-COOH as an additive (MWCNT-SPE) was obtained. MWCNT-SPE has a high thermal stability and can be used in high-temperature operating environments. Solid-state lithium batteries based on MWCNT-SPE and LiFePO₄ were assembled. The resulting lithium batteries exhibited excellent electrochemical properties at 70 and 120 °C, demonstrating a wide range of operations suitable for solid-state batteries with extreme demands. The symmetrical Li/MWCNT-SPE/Li cell operated for 1800 h with low polarization voltage …

Wound Healing Trailblazers, Beth Potier

UNH Today Archive

No abstract provided.