Digital Commons Network^™

A Comparative Study Of Cleaning Methods Across Various Dust Types: Optimizing Cleaning Techniques For Dust-Affected Photovoltaic Panels, Ahmed Moustafa, Ahmed Tohami, Hamdy Hassan

Journal of Engineering Research

Solar energy is increasingly crucial for generating electricity and reducing reliance on fossil fuels. However, the efficiency of photovoltaic (PV) panels is substantially affected by dust accumulation. This research aims to enhance the performance and longevity of solar panels by evaluating various eco-friendly cleaning techniques for different dust types: Yellow Sand, Normal Dust, and Mud. The methods tested include low, medium, and high-water flow rates, medium flow rates with a wiper, compressed medium flow, and air blowing. Key performance metrics such as temperature, current, voltage, and power were measured before and after cleaning to assess effectiveness. The results demonstrate that …

Three-Rigid-Link Manipulator Robot Inverse Dynamic Model Using Ann Based On Pid Controller, M.A. El-Gohary, M.S. Elksas, A. E. Banna, S.G. Ahmad

Journal of Engineering Research

This work proposes an inverse dynamics model of a three-rigid -link manipulator robot employing a PID controller based on artificial neural networks. In order to attain precise position, neural network control algorithms are designed to handle nonlinear issues including robot manipulator control and uncertainty compensation. An artificial neural network with two layers that uses feedforward training is trained using the back propagation technique. By just fusing the ANN with other traditional control techniques, the suggested controller gives the network more information on the composition and dynamics of the system. The PID controller generates data that is used to train neural …

Evaluation And Improvement Of A Solar Still With A Pyramidal Shape By Modifying Its Basin Design, Yaf El-Samadony, Ss Elsayed, Mohamed Abd Elnabi, Ahmed Abdo

Journal of Engineering Research

As global demand rises, freshwater shortage is a serious obstacle that calls for sustainable desalination methods. To increase desalination productivity, this paper looks at integrating photovoltaic (PV) panels with a novel pyramid solar still architecture. Two distinct configurations of pyramid solar still absorbers were created, assessed, and contrasted with a conventional pyramid solar still: configuration (1) had a square base pyramid measuring 900 cm2 and a height of 12.5 cm, while configuration (2) had a pyramid base pyramid of 2500 cm2 and a height of 21 cm. The different pyramid proportions, working concepts, and system components were explained. A thorough …

Numerical Investigation Of Temperature Distribution Analysis For A Domestic Refrigerator With Different Duct Shapes, Faisal Elhabashy, A.A. Hawwash, Aly M.A. Soliman, Walid G. Alshaer

Journal of Engineering Research

The domestic refrigerator is one of the most home appliance used and the enhancement in its performance will has a significant effect on energy saving and environment. Preserving food at low and uniform temperatures is especially important to avoid Food spoilage and decreases the microorganisms. The aim of this study is to investigate numerically a different duct shapes to achieve an efficient cooling in the refrigerator and keep the temperature at the required range, using software called SIMULIA. The numerical model was developed to simulate the refrigeration system accurately, porous media and heat balance techniques were combined to the conservation …

A Non-Standard Finite Difference Approach For Optimizing The Thermal Behaviour Of Photovoltaic Panel With Hybrid Cooling Techniques, E.F. El-Gazar, A.A Hawwash, Hamdy Hassan, Shinsuke Mori, Ayman Refat Abd Elbar

Journal of Engineering Research

A finite difference model is developed to simulate the thermal behaviour of the PV system with an innovative cooling system. The proposed cooling system combines an aluminium heat spreader (AHS) with phase change material (PCM) placed at the backside of the solar panel. The new non-standard model is solved using MATLAB software and is validated with real experimental data collected under hot climate conditions. The new nonlocal model is found to be more effective in analyzing heat transfer processes throughout the entirety of the PV system compared to conventional PV models. Additionally, the new cooling PV system has been compared …

Finite Element Analysis Of Stress-Induced Phase Transformation In Sma Wire, Ali M. Mamdouh, Ali S. Helal, Yasser A F El - Samadony

Journal of Engineering Research

Shape memory alloys (SMAs) are well-known for their remarkable mechanical properties, particularly their shape memory and super-elasticity abilities. These Properties make them ideal for a variety of adaptive mechanical applications. The most common application is the implementation of SMA wires as mechanical actuators. However, the nonlinear characteristics and the hysteresis nature of SMAs limit their utility in engineering applications. This makes SMAs desirable, but it is considered a complicated material for developing advanced rehabilitation devices that can significantly enhance patient treatment. In this paper, a finite element analysis, (FEA) study investigated the behaviour of SMA wires under mechanical loads. COMSOL …

Design, Modeling, And Control Of Medical Service Quadrotor, Mohamed Eid, Anas Mohamed, Ali M. Mohamed

Journal of Engineering Research

Due to road accidents, it is difficult to supply injured people with first aid, especially in difficult-access regions. Also, uneven roads or far places pose a problem for ambulances and doctors to reach and save injured people’s lives. The paper aims to design, model, and control a drone able to fly at different heights and support patients with essential needs after accidents. The drone also contains sensors to measure blood sugar and pressure in cases of diabetic coma that require urgent intervention. The drone design was tested using SolidWorks and FLUENT to ensure safe design in different flying conditions. The …

Assessment Of Physical And Ergonomic Hazards And Their Compliance With National Standards. A Case Study, Amira Abdelraheem

Journal of Engineering Research

Occupational hazards are a significant concern in high-risk environments such as petroleum operating companies, where workers are exposed to various risks, including chemical, physical, mechanical, ergonomic, and psychosocial factors. Effective management of these hazards is essential to protect the health and safety of employees and maintain operational efficiency. This study aims to assess physical hazards including a-weighted equivalent noise levels, heat stress, Lightning and Ergonomics in a petroleum operating company in Egypt, and to check its conformity with national standards. Physical environment (Noise, heat stress and illumination) in different worksites were assessed using calibrated direct reading instruments to evaluate the …

The Impact Of Adopting Unicef Growth And Development Modules In Enhancing Nursing Students' Knowledge: A Qualitative Study, Yousef Eljeesh, Mahmoud Ayash

Journal of the Arab American University مجلة الجامعة العربية الامريكية للبحوث

Background: The growth and development phase are an essential and critical period of human life, especially in the early stages. It was defined by most professionals as the interval from conception to eight years of age. This interval is vital for brain growth. In addition, these developmental years have a significant and lifelong impact on children. Thus, almost all children in these years need to be well cared. Aim: The study aimed to assess the impact of adopting UNICEF modules on nursing students' knowledge about growth and development concepts. Design: A qualitative study design was used to conduct the study. …

Causality In Newtonian Mechanics And Its Role In Classical Physics, Suzan Al Dababsa

Journal of the Arab American University مجلة الجامعة العربية الامريكية للبحوث

This study aimed at studying the principle of causality and its problems theoretically in the modern physical theory, starting with Isaac Newton. It considered Newton’s theory of motion and gravity the launching pad for the whole of modern physical theory. This study averred that the principle of causality acquires its definite physical meaning from, and is operationally determined by, the physical theory itself. That is why this study embarked on studying the conceptual content of the modern physical theory in its various stages. It embarked on philosophically studying the conceptual content of Newtonian mechanics, classical physics. It detailed the genesis, …

Mosaicos De La Comunidad (Mosaics Of The Community): Community-Engaged Participatory Muraling With Madres Emprendedoras, Jesica S. Fernandez, Laura A. Nichols

Ethnic Studies

In this paper, we describe a collaborative community-based research project that centered on community members’ lived experiences, which led to the identification of key community issues that resulted in a representative art project in the form of a public mural. Eleven mothers who were long-time residents of the community were the drivers of the issue identification and mural creation. The issues identified, and subsequently depicted in the mural, revealed the importance of the environment in neighborhoods, with residents dealing with encampments, illegal dumping, prostitution, eviction, and gentrification. In the mural Mosaicos de la Comunidad (Mosaics of the Community), a group …

The Impact Of Self-Management Programming On Gifted Student Perceptions Of Sleep In A Residential Setting, Katie Berger

Staff Publications & Research

Insufficient sleep among high school students has become a pressing concern for its detrimental effects on academic performance, physical health, and mental wellness. This concern is amplified for students living away from their parents in a boarding school setting. The purpose of this action research study was to investigate and improve the sleep experience of gifted secondary students who live with their peers in a residential setting. Two cycles of data collection occurred. Participants in Cycle 1 were gifted secondary students who were enrolled at a residential school, as well as counselors and residential staff employed at the same institution. …

As 111-001 Daf Heritage & Values I, Alexus Berry

Aerospace Studies Syllabi

No abstract provided.

As 221-001 Team & Leadership Fundamenatals I, Michael Makaryk

Aerospace Studies Syllabi

No abstract provided.

As 335-001 Leadership Lab, John Phinney

Aerospace Studies Syllabi

No abstract provided.

As 443-001 Natl Sec Affairs & Prep Active, Michael Makaryk

Aerospace Studies Syllabi

No abstract provided.

As 336-001 Poc Leadership Lab, John Phinney

Aerospace Studies Syllabi

No abstract provided.

Building Toward Population Reserve And A Critical Positive Psychiatry, Peter J. Whitehouse

Faculty Scholarship

No abstract provided.

Longitudinal Retrospective Study Of A Wearable Nmes System To Determine The Effects On Arm Usage In Hemiparetic And Hemiplegic Patients, Nipun Chopra, Philip Muccio, Rafik Salama, Josh Schueller, Davis Durrant, Edward Dabrowski

Psychology and Neuroscience Faculty Publications

Brain disorders such as traumatic brain injury (TBI), stroke, cerebral palsy (CP), and surgical interventions can result in aberrant motor function in the contralateral limbs, resulting in paralysis, weakness, and/or spasticity. It is known that, in the short term, neuromuscular electrical stimulation (NMES), the application of low-level electrical currents to motor nerves to induce muscle contractions in paralyzed muscles, can stimulate affected muscle groups and increase arm mobility. However, there remains a paucity of longitudinal evidence examining NMES-mediated improvements of arm usage.

Objective

The aim of this study was to determine the effectiveness of a long-term BioSleeve intervention on the …

Optimizing Long Covid Outcomes: Insights From A Survey Of U.S. Occupational Therapists, Malachy J. Clancy, Phd, Otr/L, Bcpr, Robert Dekerlegand, Pt, Mpt, Phd, Ccs

Department of Occupational Therapy Posters and Presentations

Background & Purpose

• Upwards of 15% of individuals infected with SARS-CoV-2 may develop “Long COVID” with persistent physical, cognitive, and/or mental symptoms potentially amendable to occupational therapy.
• Variability exists in the rehabilitation approach for individuals receiving occupational therapy for this novel condition.
• Clinical practice guidelines (CPGs) and other evidence-based resources exist to help standardized rehabilitation; however, it is unknown if occupational therapists (OTs) are aware of these resources and applying them in the management of individuals with Long COVID.
• We surveyed OTs in the contiguous United States (U.S.) to explore their awareness and application of Long COVID CPGs along with …

Memory In Haruki Murakami's 'Norwegian Wood', Merry Ling

Theses and Dissertations

This thesis explores how Haruki Murakami's Norwegian Wood challenges conventional perceptions of memory as a linear process tied to self-understanding and reconciliation. Through the protagonist Toru Watanabe's struggle to confront his traumatic past, Murakami presents memory not as a straightforward tool for resolving the present but as an elusive, fragmented phenomenon. Toru's hesitance to release his attachment to the past, alongside his interactions with characters who embody different approaches to memory and trauma, underscores the complexity--and often the impossibility--of achieving closure. While the novel appears overwhelmed with tragedy, trauma, and loss, and offers no clear resolution for Toru, Murakami's subtle …

Tdp43 Autoregulation Gives Rise To Dominant Negative Isoforms That Are Tightly Controlled By Transcriptional And Post-Translational Mechanisms, Megan M. Dykstra, Kaitlin Weskamp, Nicolás B. Gómez, Jacob Waksmacki, Elizabeth Tank, M. Rebecca Glineburg, Allison Snyder, Emile Pinarbasi, Michael Bekier, Xingli Li, Morgan R. Miller, Jen Bai, Shameena Shahzad, Neha Nedumaran, Clare Wieland, Corey Stewart, Sydney Willey, Nikolas Grotewold, Jonathon Mcbride, John J. Moran, Aditya V. Suryakumar, Michael Lucas, Peter M. Tessier, Michael Ward, Peter K. Todd, Sami J. Barmada

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The nuclear RNA-binding protein TDP43 is integrally involved in the pathogenesis of amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD). Previous studies uncovered N-terminal TDP43 isoforms that are predominantly cytosolic in localization, prone to aggregation, and enriched in susceptible spinal motor neurons. In healthy cells, however, these shortened (s)TDP43 isoforms are difficult to detect in comparison to full-length (fl)TDP43, raising questions regarding their origin and selective regulation. Here, we show that sTDP43 is created as a by-product of TDP43 autoregulation and cleared by nonsense-mediated RNA decay (NMD). sTDP43-encoding transcripts that escape NMD are rapidly degraded post-translationally via the proteasome …

2025 January 9 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

Restitution Of Jewish Property In Northern Transylvania During The Early Postwar Years, Stefan Cristian Ionescu

History Faculty Articles and Research

The restitution of Jewish property in the multiethnic region of Northern Transylvania faced numerous challenges during the first post-Holocaust years as a result of the complicated wartime history, postwar demographics, legal status, interethnic dynamics, and occasional violence. Having the lowest rate of survival among all Jewish communities in Romania, most of the region’s Jews died during the deportation and did not return to their native places to claim their properties. This impacted the extent of restitution of individual private property. Some of the Aryanized property was restituted to the Jewish survivors or their heirs because the wartime beneficiaries fled the …

Community-Engaged Research Projects In School Settings: Science Teachers’ Practices And Reflections, Won Jung Kim

Teacher Education

Community-engaged research (CER) is a justice-oriented research paradigm that emphasizes equitable and reciprocal knowledge co-production with community members and organizations, sharing power, benefits, contributions, and responsibilities among all participants. This study explores nine teachers’ cases of facilitating CER projects in their respective school settings, aimed to support students’ critical consciousness and action for environmental issues and injustices. This study contributes to educational research by adapting an existing framework for CER for environmental justice that can guide K-12 teaching and research on it. By analyzing data from teacher community meetings and individual interviews in the CER framework, this study articulates classroom …

Utah Producers And Soil Health: Statewide Survey Results, Peggy Petrzelka, Jessica Ulrich-Schad, Matt Yost, Jenae Dean, Earl Creech, Linda Schott, Tony Richards, Kristy Davis

All Current Publications

To gain soil health perspectives and actions from a representative sample of Utah farmers and ranchers, a mail and online survey of Utah producers was conducted in 2024, focused on those who indicated they produced crops in 2023. In this report, we provide an overview of the survey results, with a specific focus on producers’ views on soil health, indicators used for soil health, factors that influence soil health adoption, and information sources used for soil health.

Improving Fertilizer Efficiency In Containerized Nursery Production Through Substrate Temperature Management Techniques, Ashley R. Edwards

LSU Master's Theses

Resource efficiency, particularly regarding mineral nutrients, is a critical factor in the long-term success of the nursery industry. Fertilizer release is controlled by water and temperature in container-grown ornamental nursery production systems. Thus, it was hypothesized that pragmatic management of substrate temperature and moisture could extend the longevity of controlled-release fertilizer (CRF) in a container system. This study was conducted to determine the effect of irrigation scheduling, container color, and stratified substrates on substrate temperature and the subsequent use and longevity of CRF in a crop production setting. ‘Limelight’ Hydrangea (Hydrangea paniculata) liners were planted in either black …

A Structural Evaluation And Design Optimization Of A Tow Bar For Disabled Snowmobiles, David M. Pevic

Masters Theses

Snowmobile tow bars are devices used to rigidly connect two snowmobiles, such that a disabled snowmobile can be recovered from a remote location with a working snowmobile. These devices, however, are not widely used or readily available. An existing tow bar design was evaluated and redesigned to improve its structural capacity and performance. This evaluation provided a baseline to quantify improvement and included Finite Element Analysis (FEA), Design Failure Mode and Effect Analysis (DFMEA), and Design for Assembly analysis (DFA). A review of existing snowmobile tow bar patents was also performed. An updated design was then fabricated and similarly evaluated. …

Microrna 133a Regulates Squalene Epoxidase Expression In Colorectal Cancer Cells To Control Cell Proliferation And Cholesterol Production, Ji Su Mo, Santosh Lamichhane, Grinsun Sharma, Soo Cheon Chae

School of Medicine Faculty Publications

Background/Objectives: Colorectal cancer (CRC) is one of the most common cancers worldwide, with high incidence and mortality rates. MicroRNAs are endogenous and non-coding RNAs that play a pivotal role in the development and progression of various cancers by targeting specific genes. Previously, we identified MIR133A to be significantly decreased in human CRC tissues. This study aims to identify the relationship with SQLE, one of the candidate target genes of MIR133A, and study their interaction in CRC cells. Methods: Through the luciferase reporter assay, quantitative RT-PCR (qRT-PCR), and Western blot analysis. Results: We identified SQLE as a direct target gene of …

Molecular Identification And Functional Characterization Of A Stilbene Synthase Gene In Rheum Officinale, Gaoxin Hao, Mengmeng Liu, Qiao Du, Xia Zhao, Feng Yan, Xiaochen Hu, Jing Gao, Liang Peng, Yimin Li, Gang Zhang

Turkish Journal of Botany

Stilbene synthase (STS), is a pivotal gene involved in the biosynthesis and regulation of stilbenes compounds, playing a crucial role in plant growth, development and stress adaptation. Meantime, stilbene compounds hold promising prospects of the wide-ranging clinical applications. Rheum officinale contains abundant stilbene compounds, yet the precise regulatory genes governing their biosynthesis remain elusive. In this study, the ORF of RoSTS gene was amplified, yielding a length of 1,140 bp and encoding a protein consisting of 379 amino acids with a relative molecular mass of 41 640.25 Da. The RoSTS protein contained the conserved residues (Cys 164, His 303, and …