Engineering Commons^™

Koh Vs Deionized Water Operation In Anion Exchange Membrane Electrolyzers, Noor Ul Hassan, Yiwei Zheng, Paul A. Kohl, Mustain E. William

Faculty Publications

Anion exchange membrane water electrolyzers (AEMELs) have recently received significant attention due to their potential advantages over proton exchange membrane electrolyzers (PEMELs). However, some AEMELs feed an aqueous salt solution to the cell where PEMELs typically feed deionized (DI) water. DI water is preferred to keep the system and maintenance costs low. Because of this, many AEMEL researchers report performance both in the salt solution (typically KOH) and DI water. However, the methodology for switching between KOH and DI water is often poorly defined, and it is unclear what impact the residual salt has on cell performance after switching from …

Performance Of Concrete With Different Cement Finenesses And Nano-Activators, Brandon Faltin

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

The excessive shrinkage in modern concrete is the result of the construction industry in its quest to complete the job as soon as possible. In order to accomplish this, the fineness of cement was increased significantly in recent decades for a faster rate of strength gain. To combat the cement fineness and reverse the trend of shrinkage, the usage of coarse cements and nanoparticles should be strongly considered. The coarse cement is used to reduce the shrinkage of concrete, while the nanoparticle increases the early strength, alleviating the original concerns of reduced early strength when using coarse cement.

Work in …

The Positive Effects Of Study Abroad On Education, Brooke Semler

Honors Theses

Education, especially at the collegiate level, can be influenced in many ways. Traveling, especially in the form of study abroad allows individuals to experience different cultures firsthand and broaden their perspectives of the world. Study abroad and education have a very strong correlation. When examining all students that attended Western Michigan University from Summer of 2011 to the 2017-2018 school year, students who studied abroad have higher educational success than students who don’t. Most students who completed study abroad show a higher GPA after completing their study abroad course. Furthermore, students who studied abroad have a higher graduation rate than …

Steam Report By Siri Ojamaa, Jacqueline Docampo

STEM Month

My name is Siri Ojamaa I am in 5th grade at Theadore Roosevelt school. I live in Weehawken, NJ. I really love Steam and I wanted to tell you about my experience with Steam

Steam Report By Summer Diaz, Summer Diaz

STEM Month

Hi, my name is Summer Diaz. I am 10 years old and a student at Theodore Roosevelt School (TRS) in Weehawken. I am here to talk to you about my process through STEAM. STEAM is a very important and difficult task to do because I have done many projects involving STEAM like my Umbrella Holder that I made when I was 8 in 3rd grade. Which prevents having so much groceries in your hand when it’s raining so you only have to hold one thing. Then my most recent project is Finder which prevents you from losing your lost devices.

3 Stem Projects By Fares Soliman, Fares Soliman

STEM Month

My name is Fares Soliman. I am a fourth grade student from John Hill School Boonton NJ. I created a 3 STEM project. The first project that I made was a doll. I used pink yarn for the dress and brown yarn for the hair. I also used a round wooden ball for the face. The second project that I created was a diorama of a farm. I put some grass, trees, a barn, hay sticks, some animals, a bridge, a fence, some plastic food and corn for the crop. My third project was a diorama of a park. It …

Students Interest And Thoughts On Stem, Chrisitine Girtain

STEM Month

I am Juan Sebastian Bohorquez Mora, I am a sophomore student at Toms River High School North. I am interested in biofuels because I believe they are a good option to replace fossil fuels. I am also interested in duckweed because biofuels are made out of crops, and people need to eat those crops. That’s when duckweed comes in and it can be used as a feedstock for ethanol production which is a biofuel. Bioethanol is a type of biofuel and it is derived from the corn’s starch. Instead of making ethanol from the corn’s starch, we can use duckweed …

Learning's In Stem, Victoria Arms

STEM Month

Can you share something you have learned related to a STEM topic you feel is important?

Answer: A stem topic I feel is important is math because you can learn many equation’s.

Can you explain why that topic is important to you, their families and communities? Answer: The topic that is important to our families and community is important because you can grow smarter and can learn a lot of things.

Mrs.Arms class.

Basketball Shooting Performance Is Maximized By Individual-Specific Optimal Release Strategies, Nathan Slegers

Faculty Publications - Biomedical, Mechanical, and Civil Engineering

This study investigated the relationship between optimal basketball release angles and individual release distributions and whether individuals seek their optimal or minimum velocity release strategy. Sixteen male basketball players (height 183 ± 9 cm, age 22.6 ± 7 years) were recorded shooting 75 three-point shots. Ball release angle and velocity estimates were used in a nonparametric kernel density estimator (KDE) to identify individual-specific release distributions and optimal release angles. Optimal releases varied among individuals and were 4.3 ± 2.1° higher than minimum velocity releases. Mean release angles were 3.9° higher than the minimum velocity angle (p < 0.001) and only 0.4° below the optimal (p = 0.5). …

360 Sounds: Drum Sample Packs With Supporting Video Series And Website, Maddie M. Harmon

Honors Scholars Collaborative Projects

Drums are the foundation of any piece of music; because of this, it is impossible to create even a decent mix of a song without first taking the time to really mold and sculpt drum sounds. This is a painstaking process that includes extreme attention to detail in every aspect—selecting and placing microphones, tuning the drum kit, guiding the drummer to play in the pocket, adding effects processing, editing the drum tracks into single-hit takes after recording. Oftentimes (especially in the more commonplace lower-budget sessions that often don’t have the finances to spend an adequate amount of time perfecting drum …

Controlling Unequal Surface Energy Results Caused By Test Liquids: The Case Of Uv/O3 Treated Pet, Bilge N. Altay, Paul D. Fleming, Md Arifur Rahman, Alexandra Pekarovicova, Bruce Myers, Cem Aydemir, Arif Karademir

Articles

Ultraviolet/ozone (UV/O3) treatment has been reported to be an effective method to modify properties such as wettability, adhesion or adsorption of plastic surfaces. The change in the surface is measured by contact angle analysis, which employs liquids and their surface tensions (ST) to estimate the surface energy (SE). We found two different practices in the scientific community: (1) the majority of researchers adopted the ST value of liquids from the literature, while (2) other researchers conducted real-time measurements in the lab under ambient conditions prior to SE estimation. To the best of our knowledge, there is no study that compares …

Viability And Accessibility Of Urban Heat Island And Lake Microclimate Data Over Current Tmy Weather Data For Accurate Energy Demand Predictions., Irena A. Weclawiak

ETD Archive

Building Energy Simulations (BES) are necessary for designing energy-efficient systems. Open-source simulation software developed by the Department of Energy (DOE), EnergyPlus (EP) provides Typical Meteorological Year (TMY) weather data that consists of a 15-year average. Two major concerns about this data are the inability to detect extreme conditions and limited data locations. There is a greater number of Microclimate (MC) stations that can be used for simulations, but it involves time-consuming data preparation to match the EP format. This study investigated the effects of Urban Heat Island (UHI) and the MC of Lake Erie. A comparison of the MC data …

An Evaluation And Economic Analysis Of A Water Main Geothermal System In A Residential Space, Brian L. Kohut

ETD Archive

Iron-based magnetic alloys possess very good magnetic and mechanical properties. Among these alloys Fe-Si-B-based alloys show outstanding saturation magnetization and coercivity which makes them great candidates for many industrial applications. Addition of certain elements to the Fe-Si-B base is proven to improve the homogeneity and fineness of microstructure as well as enhance the magnetic behavior of these alloys. In this research work, we have studied the effect of adding copper and niobium to the Fe-Si-B base alloy. Previous studies have shown that magnetic alloys show better magnetic properties when their microstructure consists of nanocrystals embedded in an amorphous matrix. In …

Performance Of Resin Injection Ground Improvement In Silty Sand Based On Blast-Induced Liquefaction Testing In Christchurch, New Zealand, David Harold Blake

Theses and Dissertations

Polyurethane resin injection is a treatment being considered as a replacement for traditional methods of ground improvement. It has been used to re-level foundations and concrete slabs that have settled over time. Additional claimed benefits of the treatment have been noted recently, including improved factors of safety against soil liquefaction and reduced earthquake-induced settlements. To investigate the capability of the polyurethane resin injection treatment to mitigate liquefaction, two full-scale blast liquefaction tests were performed; one test was conducted in an improved panel (IP), an 8 m circular area treated with the polyurethane resin in a 1.2 m triangular grid from …

Metal Complexes Of Redox Active Ligands, Alexandra Chaparro, Parker Keller

Chemistry & Biochemistry Student Scholarship

Alexandra Chaparro ’22, Major: Biochemistry

Parker Keller ’24, Major: Chemistry

Mentor: Dr. Maria Carroll, Chemistry and Biochemistry

Our research focuses on synthesizing and studying the properties of metal complexes that contain redox active ligands. Ligands are molecules or ions that can bind to a metal ion, and this particular class of ligands is interesting because they can either accept or lose electrons. We synthesized zinc complexes, in order to measure the reduction potentials of the ligands, which provide information about the ease with which they accept electrons. We then synthesized iron complexes and determined their structures. These complexes are potentially …

A Hybrid Approach To Improve Flood Forecasting By Combining A Hydrodynamic Flow Model And Artificial Neural Networks, Li Li, Kyong Soo Jun

Civil and Environmental Engineering Faculty Publications and Presentations

Climate change is driving worsening flood events worldwide. In this study, a hybrid approach based on a combination of the optimization of a hydrodynamic model and an error correction modeling that exploit different aspects of the physical system is proposed to improve the forecasting accuracy of flood water levels. In the parameter optimization procedure for the hydrodynamic model, Manning’s roughness coefficients were estimated by considering their spatial distribution and temporal variation in unsteady flow conditions. In the following error correction procedure, the systematic errors of the optimized hydrodynamic model were captured by combining the input variable selection method using partial …

Early Warning Reentry System Comprising High Efficiency Module For Determining Spacecraft Reentry Time, Robert A. Bettinger

AFIT Patents

The present invention relates to an early warning reentry system comprising a high efficiency module for determining spacecraft reentry time and a highly efficient method for determining spacecraft reentry time. The method permits more accurate, earlier spacecraft reentry time determinations using publicly available trajectory information without the need for accounting for the actual design configuration of the spacecraft in question. Thus, a module for making such determinations can easily and inexpensively be added to an early warning reentry system.

Dc Microgrid Fault Detection Using Multiresolution Analysis Of Traveling Waves, Rudy Montoya

Mechanical Engineering ETDs

Fast detection and isolation of faults in a DC microgrid is of particular importance. Fast tripping protection (i) increases the lifetime of power electronics (PE) switches by avoiding high fault current magnitudes and (ii) enhances the controllability of PE converters. This thesis proposes a traveling wave (TW) based scheme for fast tripping protection of DC microgrids. The proposed scheme utilizes a discrete wavelet transform (DWT) to calculate the high-frequency components of DC fault currents. Multiresolution analysis (MRA) using DWT is utilized to detect TW components for different frequency ranges. The Parseval energy calculated from the MRA coefficients are then used …

Neuromorphic Computing Using Electrostatic Mems Devices, Fadi Alsaleem

Durham School of Architectural Engineering and Construction: Faculty Publications

A continuous - time recurrent neural network ( CTRNN ) is described that exploits the nonlinear dynamics of micro electro - mechanical system ( MEMS ) devices to model a neuron in accordance with a neuron rate model that is the basis for dynamic field theory . Each MEMS device in the CTRNN is configured to simulate a neuron population by exploiting the characteristics of bi - stability and hysteresis inherent in certain MEMS device structures . In an embodiment , the MEMS device is a microbeam or cantilevered microbeam device that is excited with an alternating current ( AC …

Building A Turbulent Jet: Measuring/Modeling Lagrangian Dispersion, Particle Trajectory Dynamics And Intermittency, Bianca Fontanin Viggiano

Dissertations and Theses

The mechanics of how particles diffuse, interact, eject, etc. within a fluid is applicable to numerous industrial and environmental applications. Unwanted products of combustion, dust contamination of solar panels, pathogen transport during a cough and ejections of particles during volcanic eruptions, are a few examples of flows in which increased knowledge of particle dynamics could result in substantial reduction of negative environmental and economic impacts. To better understand the tendencies of particles within shearing flows (such as jets), an extensive experimental campaign was conducted. Measurements of a turbulent round water jet were performed within an icosahedral tank. Particle tracking velocimetry …

Small Town To The World Wide Web: Designing A Website For A Local Business, Madison Cozzens

Honors Projects

The Raspberry and The Rose is a small business in Medina, OH, and had a multitude of visual communication issues that needed to be solved. But what's an online presence without a website? "Small Town to the World Wide Web: Designing a Website for a Local Business" focuses on fulfilling a local business's need for a strong online presence. It dives into how a user's experience on the website can impact brand loyalty, foot traffic, and overall perception of a business. The ultimate goal of this project is to provide insight into how a non-e-commerce website can impact a business.

Lattice Dynamics, Mechanical Properties, Electronic Structure And Magnetic Properties Of Equiatomic Quaternary Heusler Alloys Crticoz (Z = Al, Si) Using First Principles Calculations, Eesha Andharia, Hind Alqurashi, Bothina Hamad

Physics Faculty Publications and Presentations

First principles calculations are performed to investigate the thermodynamical stability, dynamical, mechanical, electronic and magnetic properties of CrTiCoZ (Z = Al/Si) novel quaternary Heusler alloys. A Y-type III atomic configuration is found to be the most stable structure for both compounds. The lattice constant values obtained using GGA-PBE approach are 5.9368 Å and 5.7853 Å for CrTiCoAl and CrTiCoSi, respectively. Using the value of elastic moduli for both the compounds, the computed Pugh’s ratio value is 2.5 and 2.7 for CrTiCoAl and CrTiCoSi, respectively, which is higher than 1.75, indicating both the compounds are ductile in nature. The melting temperatures …

Detection And Identification Of Disturbances By Spectral Analysis Of Structure-Borne Noise During The Production Of A Sealing Seam, Felix Kruppa, Lars Meisenbach, Berend Oberdorfer Dr.-Ing., Bernd Wilke Prof. Dr.-Ing.

Journal of Applied Packaging Research

When sealing, disturbances or errors can occur that impair the quality of the sealing seam and, in the worst case, lead to leaks. It is therefore important to identify and eliminate defective packages during production and to minimize the elimination by readjusting machine parameters. The aim of this article is the clear identification of seam quality problems on a vertical forming, filling and sealing machine SVE2520 by evaluating process parameters during the manufacturing process. For this purpose, the structure-borne noise is measured for each seal in order to identify not-usual curves. These not-usual curves are related to different disturbances or …

Greater Understanding Of Human Factors Will Lead To Improved Aviation Safety, Alaba Gabriel Idowu

Beyond: Undergraduate Research Journal

The objective of this research was to reveal the impact of human factors on flight safety and provide corrective recommendations that can mitigate human errors in the aviation industry. The method of investigation included an evaluation of the crash of Avianca Airlines Flight 052, which resulted in findings of probable cause of the accident and evaluated how human factors, including a lack of effective communication, stress, fatigue, complacency, lack of awareness, norms, assumptions, and pressure affected the safety of flight. In addition, an analysis of the data and information synthesis was done to arrive at results, conclusions, and recommendations to …

A Descriptive Pilot Study On Travel Nurses' Risk Of Burnout During The Covid- 19 Pandemic, Lashanda Head

ATU Theses and Dissertations 2021 - Present

Burnout is a state of emotional, physical, and mental exhaustion that results from long-term involvement in work situations that are difficult (Schaufeli & Greenglass, 2001). Burnout leads to a significant occupational problem in various professions that involve people who work with others, including nurses who work with COVID- 19 patients. This pilot study aims to determine if travel nurses who have worked or are currently working during the COVID-19 pandemic in acute care hospitals are at increased risk for nurse burnout. A convenience sample (N=9) of travel nurses working at CHRISTUS St Michael Health System were asked to …

Real-Time Measurement Of Parametric Influences On The Refractive Index And Length Changes In Silica Optical Fibers, Sohel Rana, Austin Fleming, Harish Subbaraman, Nirmala Kandadai

Electrical and Computer Engineering Faculty Publications and Presentations

In this paper, we present a simple cascaded Fabry-Perot interferometer (FPI) that can be used to measure in real-time the refractive index (RI) and length variation in silica optical fibers caused due to external physical parameters, such as temperature, strain, and radiation. As a proof-of-concept, we experimentally demonstrate real-time monitoring of temperature effects on the RI and length and measure the thermo-optic coefficient (TOC) and thermal expansion coefficient (TEC) by using the cascaded FPI within a temperature range of 21–486°C. The experimental results provide a TEC of 5.53 × 10⁻⁷ /°C and TOC of 4.28 × 10⁻⁶ /°C …

The Characteristics And Dynamic Mechanism Of Regional Development And Evolution Of Pan’An Lake, Chang Jiang, Chen Yedong, Li Zixuan, Wang Hui, Feng Shanshan

Coal Geology & Exploration

Coal mining activities will directly or indirectly affect the development and evolution of cities and their characteristics. Jiawang District of Xuzhou used to be an important coal production base in China, and Pan’an Lake region is the main area of Jiawang coal production. This paper takes Pan’an Lake region as the research object, analyzes the characteristics of its development and evolution under the influence of coal mining activities, selects social environment, economic development, policy control and resource environment as the driving factors affecting the development and evolution of the area, and uses principal component analysis to determine the main driving …

Research Status And Prospects Of Secondary Enrichment And Accumulation Of Residual Coalbed Methane Resources In Abandoned Mines, Wang Jiachen, Yang Zhaobiao, Qin Yong, Yang Yanqun, Dong Zhiyong, Meng Xianghao

Coal Geology & Exploration

In promoting the achievement of the carbon peak and carbon neutrality goals in China, the development of residual coalbed methane resources in abandoned mines is of important practical significance. However, the development of the residual coalbed methane is characterized by its secondary dynamic reservoir formation after disturbed under original geological conditions. Therefore, the related literature at home and abroad in recent years is summarized as follows. (1) The disturbed area of the overburden and floor in coal seam mining can be divided into the gas conduction fracture zone, pressure relief zone and non-desorption zone. The influence range of coal seam …

Establishment Of A 3d Solid Model Blasting Rock Mass Based On Intelligent Lithology Identification, Chen Yingxian, Wang Pengfei

Coal Geology & Exploration

With the development and application of intelligent drilling machine, the lithology data of blasting borehole can be obtained accurately. The blast-hole database is established to store and manage the intelligently identified blast-hole data. Taking the rock property data of blast hole as the sample, the inverse distance square method is used to interpolate the solid elements within the blasting area to generate the 3D solid model of blasting rock mass. The 3D solid model of rock mass was cut by using the polygon of blasting area and the triangular network of bench, and then the 3D solid model of blasting …

Establishment And Application Of Four Basic Data Accounts For Coal Mine Water Control, Lyu Yuguang, Li Mingzhen, Hu Falun, Liu Shuang

Coal Geology & Exploration

Mine water inflow, aquifer water level, analysis data of water quality and formation information are closely related to water prevention and control. It takes a long time to collect a large amount of data. The relevant technical specifications clearly require the establishment of an account for data management, but there is no unified and practical account format, and detailed description of its purpose. Microsoft Excel is used to establish four basic data accounts of mine water inflow, aquifer water level, hydrochemistry and information on stratum. The format of the account is standardized, and the methods for data application of each …