Digital Commons Network^™

Normal And Reverse Flow Injection- Spectrophotometric Determination Of Doxycycline Hyclate In Bulk And Pharmaceutical Samples, Tabarak Mohammed, Hind Hadi

Baghdad Science Journal

The present paper reports the development and validation of an analytical method for doxycycline hyclate (DOX) quantification in pure and dosage forms by normal and reverse flow injection analysis (FIA) techniques. Two types of FIA approaches were employed to automate a diazotization coupling reaction of DOX with diazotized benzidine dihydrochloride. Red azo dye was formed rapidly and measured at maximum wavelength of 488 nm. Calibration curves were prepared over different DOX concentrations with linearity ranges of 10-250 and 1-180 µg/mL for normal and reverse FIA systems respectively with the limits of detection of 2.95 and 0.46 µg/mL and limits of …

Quantification Of Bioactive Compounds In Coffea Arabica And Their Impact With Omega-3 Supplementation On Non-High-Density Lipoprotein Levels In Hyperlipidemia-Induced Rats, Sojoud M. Al-Zoubi, Shady H. Awwad, Reem A. Issa, Ahmad Q. Daraosheh, Talal Al-Qaisi, Husni Farah, Khaled W. Omari, Beisan A. Mohammad, Mumen Amer, Rula F. Khuzaie, Mahmoud S. Abu-Samak

Baghdad Science Journal

This study aims to evaluate the levels of coffee lipids, diterpenes, chlorogenic acid (CGA), and caffeine in coffee samples with different roasting levels. Additionally, it aims to assess the impact of coffee extracts with/without omega-3 supplementation on lipid profile parameters. Liquid-liquid and soxhlet extraction, and quantitation were performed using HPLC-DAD. Two groups of Wistar rats were used: non-hyperlipidemic and hyperlipidemic. Blood samples were collected before and after hyperlipidemia induction after six weeks. The lipid profile: total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglyceride (TG), non-high-density lipoprotein (non-HDL), and total cholesterol-to-high-density lipoprotein ratio (TC/HDL) were determined. A positive correlation …

Ability Of Staphylococcus Epidermidis And Escherichia Coli To Eliminate Cadmium, Lead And Copper From Tigris River In Mosul City, May A. Abdul Kader, Ghada A. Mohammad

Baghdad Science Journal

The heavy metals are non-biodegradable and could be toxic and carcinogenic, thus, their improper concentration in water could result in critical health issues for living organisms. Therefore, this study aimed to remove three heavy metals (Cadmium, lead and copper) by biological treatment especially using environmental nonpathogenic bacteria such as Staphylococcus epidermidis and Escherichia coli. Eight samples were collected from Tigris River from different regions of Mosul city. Two containers were used for each sample to measure the concentration of minerals before and after treatment by bacteria. The results showed that E. coli was more efficient in removing two heavy …

The Experience Of Posttraumatic Growth For Atheists, Savannah Miller

Doctoral Dissertations

Background - This study aimed to understand how atheists manage to make meaning and find growth after experiencing trauma. Posttraumatic Growth is a well documented point of research across qualitative and quantitative domains, and this project aimed to add meaningful findings to that research body. Atheists, however, are an understudied population, especially as it relates to their subjective experience of trauma and posttraumatic growth.

Methods - This study aimed to investigate the experience of posttraumatic growth for atheistindividuals. Semi-structured interviews adhering to the tenets of interpretive phenomenological analysis were conducted then transcribed, coded, and analyzed. Themes and subthemes emerged and …

Seasonality In Terminus Ablation Rates For The Glaciers In Greenland (Kalaallit Nunaat), K. C. Aman, Ellyn M. Enderlin, Dominik Fahrner, Twila Moon, Dustin Carroll

Faculty Research, Scholarly, and Creative Activity

Marine-terminating glaciers of Greenland (Kalaallit Nunaat) have been losing mass since the 1990s, with a substantial portion caused by the effects of dynamic change. Conventional assessments of dynamic mass loss, however, often ignore the influence of terminus advance or retreat on the timing of mass loss. Here, we construct and analyze a decade (2013-2023) of monthly ice flux driven both by temporal variability in ice flow (i.e., discharge) and terminus position change - collectively called terminus ablation - for 49 marine-terminating glaciers in Greenland. We calculate terminus ablation rates using open-source datasets, including terminus position, ice surface elevation, ice thickness, …

Analyzing Food Access: An Investigation Of Food Insecurity Amongst Latinos In Rural Nebraska, Natalia Santos

Theses & Dissertations

Background: Food insecurity is a public health issue in the United States, with disproportionately higher rates among Latino/Hispanic households. Rural communities face unique geographical, socioeconomic, and systemic barriers that often exacerbate food access disparities. Despite the growing Latino population in rural areas, particularly in Midwestern states like Nebraska, there remains a critical gap in comprehensive research that integrates both objective and subjective understandings of their food environments. Understanding these multifaceted influences is crucial for developing effective, culturally sensitive interventions.

Problem Statement: This dissertation aims to answer the central question: How does food access and food insecurity manifest amongst Latinos in …

Diverse Cell Types Establish A Pathogenic Immune Environment In Peripheral Neuropathy, Julie Choi

Arts & Sciences Graduate Student Theses and Dissertations

Neuroinflammation plays a complex and context-dependent role in many neurodegenerative diseases. We identified a key pathogenic function of macrophages in a mouse model of a rare human congenital neuropathy in which SARM1, the central executioner of axon degeneration, is activated by hypomorphic mutations in the axon survival factor NMNAT2. Macrophage depletion blocked and reversed neuropathic phenotypes in this sarmopathy model, revealing SARM1-dependent neuroimmune mechanisms as key drivers of disease pathogenesis. In this study, we investigated the impact of chronic subacute SARM1 activation on the peripheral nerve milieu using single cell/nucleus RNA-sequencing (sc/snRNA-seq). Our analyses reveal an expansion of immune cells …

Multimodal Characterization Of Systems-Level Robustness In The Cellular Organelle Network, Aline Arra

Arts & Sciences Graduate Student Theses and Dissertations

Eukaryotic cells house mesoscopic and macroscopic complex systems that work in tandem for proper cellular function. A defining feature of eukaryotic cells is their mesoscopic network of membrane bound compartments called organelles. While each type of organelle has their own individual functions, there are vital cellular processes that come from the interactions between them, such as organelle biogenesis and metabolic regulation. A central question in cellular biophysics is to what degree is cellular function robust or fragile to breaks in the organelle network. These interactions can be explored by genetically deleting inter-organelle protein tethers called organelle contact sites. Here we …

Unveiling Mysteries Of The Universe: Axions, Sterile Neutrinos, And Curvatons, Takuya Okawa

Arts & Sciences Graduate Student Theses and Dissertations

The Standard Model of particle physics and cosmology is amazingly successful in describing our universe, from at present to even tracing back to just one second after its birth. Yet, it is known to be incomplete. For instance, (i) more than four-fifths of matter in the universe is unknown, (ii) quantum chromodynamics is unnaturally of CP-preserving nature, (iii) the universe produced baryonic particles by nearly equal but slightly larger amount compared to anti-baryonic particles, and (iv) the physics at very early times is not understood yet. This thesis first briefly summarizes the Standard Model of particle physics and cosmology, and …

Red Noise Suppression In Pulsar Timing Array Data Using Adaptive Splines, Yi-Qian Qian, Yan Wang, Soumya Mohanty

Physics & Astronomy Faculty Publications

Noise in Pulsar Timing Array (PTA) data is commonly modeled as a mixture of white and red noise components. While the former is related to the receivers, and easily characterized by three parameters (EFAC, EQUAD and ECORR), the latter arises from a mix of hard to model sources and, potentially, a stochastic gravitational wave background (GWB). Since their frequency ranges overlap, GWB search methods must model the non-GWB red noise component in PTA data explicitly, typically as a set of mutually independent Gaussian stationary processes having power-law power spectral densities. However, in searches for continuous wave (CW) signals from resolvable …

Lipidomic And Proteomic Insights From Extracellular Vesicles In The Postmortem Dorsolateral Prefrontal Cortex Reveal Substance Use Disorder-Induced Brain Changes, Chioma M Okeoma, Wasifa Naushad, Bryson C Okeoma, Carlos Gartner, Yulica Santos-Ortega, Calvin Vary, Savio Lima-Bastos, Victor Corasolla Carregari, Martin R Larsen, Alessio Noghero, Consuelo Walss-Bass, Rodrigo Grassi-Oliveira

Faculty, Staff and Student Publications

Substance use disorder (SUD) significantly increases the risk of neurotoxicity, inflammation, oxidative stress, and impaired neuroplasticity. The activation of inflammatory pathways by substances may lead to reactive astrogliosis and chronic neuroinflammation, potentially mediated by the release of extracellular particles (EPs), such as extracellular condensates (ECs) and extracellular vesicles (EVs). These particles, which reflect the physiological, pathophysiological, and metabolic states of their cells of origin, might carry molecular signatures indicative of SUD. In particular, our study investigated neuroinflammatory signatures in SUD patients by isolating EVs from the dorsolateral prefrontal cortex (dlPFC) Brodmann's area 9 (BA9) from postmortem subjects. We isolated BA9-derived …

Postglacial Erosional Response Of A Permafrost Landscape Across Decadal To Millenial Timescales, Aklavik Range, Arctic Canada, Bailey J. Nordin

Dartmouth College Master’s Theses

Rapid warming and permafrost thaw across Arctic landscapes are projected to drastically accelerate local erosion rates and sediment fluxes to downstream systems and the communities that rely on them. However, interpreting this signal of change first requires disentangling the relative contributions of postglacial landscape responses, periglacial processes, and modern warming to observed changes in erosion. To explore this problem, we combine a suite of geochronometers to examine erosion and deposition rates over timescales of 10²–10⁷ years across a periglacial alluvial fan and catchment system on the former margin of the Laurentide Ice Sheet in the Aklavik Range …

Anatomy Of An Ai Arms Race: U.S. And China Technological Dispute For Ai Leadership, Denisse I. Rojas Maldonado

Dartmouth College Master’s Theses

The history of societies and the emergence of powerful states have been marked by cycles of conflict and war, followed by periods of cooperation that foster international stability. Similarly, the Cold War era saw a significant rise in military and economic capabilities, which highlighted a security dilemma as the former USSR and the United States sought to protect their national interests. Currently, artificial intelligence has expanded the scope of invisible warfare beyond the atomic bomb. Some scholars like Paul Scharre advocate that there is no arms race in place, and others support the idea of a healthy competition and collaboration …

Pedagogy Of Dialogic Communication: Becoming Aware Of Our Unconscious Belief, Leonard J. Shedletsky

International Journal of Transformative Teaching and Learning in Higher Education

Norms of the classroom limit our learning about ourselves. Hidden scripts guide our behavior. Beliefs we are unaware of are often behind our responses to ideas. Unconscious beliefs are connected to our immediate, spontaneous responses, referred to as intuitions in social intuitionist theory. Intuition is what we believe and can access at high speed without being aware of what we believe, without being aware of our reasons for believing it, and without knowing how we came to this belief or how we access it in memory. We experience intuitions as knowing something all at once. We know what we like, …

Exploring The Connection Between Teaching Frameworks And Policies For Assessing Teaching, Barbara J. Bird, Beate Brunow, Eric Kyle, Shawn R. Simonson

International Journal of Transformative Teaching and Learning in Higher Education

Most faculty policies aimed at faculty review or assessment of teaching do not include specific teaching criteria and standards but instead lean heavily on student evaluations and peer review of teaching. This approach provides no concrete path for using assessment in a feedback loop that enables teachers to improve teaching. Implementing teaching frameworks can improve feedback loops and assessment policies by providing specific criteria and standards. Developing teaching effectiveness frameworks and connecting them to teaching assessment policies can be a critical step in advancing institutional change initiatives focused on teaching effectiveness. This critical alignment enables sustainable and meaningful change. This …

Rooted In Resilience: Exploring Indigenous Economic Models And Sustainability On The Rocky Boy Indian Reservation., Dominique Nault

Capstone Collection

This study examines how traditional practices and cultural values of the Chippewa Cree shape the economic identity and sustainability of the Rocky Boy Indian Reservation. Using a mixed-methods approach that combined demographic surveys with culturally grounded interviews, the research reveals that economic development in the community is inseparable from traditional knowledge systems, collective well-being, and ecological stewardship. Rather than centering on financial accumulations, wealth is defined by family, community, and cultural continuity, placing traditional knowledge on par with land and monetary resources.

Three central themes emerged from the data: (1) the enduring role of traditional values and cultural knowledge in …

Finding Forever: Views On The Past And Present In Mexican Literature, Porfirio López

Cuaderna Vía

No abstract provided.

The Penrose Stairway Jorge Luis Borges At The Center Of Christopher Nolan's Inception, Brian Durán-Fuentes

Cuaderna Vía

No abstract provided.

Full Issue, Cuaderna Via Editors

Cuaderna Vía

No abstract provided.

Exploring Identity And Seeking Belonging: Diverse Students’ Experiences With A Campus Women’S Center, Sarah Tucker Jenkins

Journal for Women and Gender Centers in Higher Education

Women’s and gender equity centers (abbreviated as women’s centers) were first established in U.S. universities in the 1960s and currently number in the multiple hundreds across all types of higher education institutions in the country. Women’s centers play a vital role in providing high impact, culturally responsive student engagement; however, research on women’s centers is often informal and infrequent, leading to a dearth of knowledge about the efficacy of student engagement efforts. Women’s centers, and the feminist movement from which they arose, have historically excluded the voices and experiences of women of color and other marginalized identities. While centers are …

Geometry Math Problem-Solving Ability In Grade Iv Elementary School Students Based On Learning Style, Mutiara Intan Lestari, Arinta Rezty Wijayaningputri, Ichsan Anshory

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

According to Miles and Huberman, this research uses a descriptive qualitative method with three steps of data analysis: data reduction, data presentation, and conclusion drawing. Data collection techniques included observation, interviews, and documentation. The study aimed to analyze the relationship between students' learning styles and how they solve geometry math problems. Initial observations in class IV SDN Pulorejo III showed that students' literacy skills were low, especially in understanding story problems, obstacles in solving geometry problems such as memorizing formulas, and ignorance of students' learning styles. The results revealed that 54% of students have a visual learning style, 18% auditory, …

Living With Disability After Spinal Cord Injury: A Grounded Theory Methodology, Diaa K. Abd Ali

Al-Ameed Journal for Medical Research and Health Sciences

Study Design: A Grounded Theory Methodology is employed to investigate the study phenomenon. the entire study started from Jan. 15^th. 2021 to March, 1^st. 2022.

Aim: The study is conducted to explore the concepts that shape the experience of living with disability among patients with spinal cord injury, and to formulating a grounded theory regarding nursing care for patients with spinal cord injuries.

Setting: The study is conducted in Ibn Alkuf Hospital for Spinal Cord Injuries, Baghdad, Iraq.

Methods: A non-probability purposive sampling technique was used to select (12) patients with chronic (more than 5 years) …

Application Of Ann Artificial Network In Slope Behavior Evaluation Using Machine Learning Technique, Marziyeh Tourani, Hadi Bahadori

NJF Intelligent Engineering Journal

In geotechnical engineering, evaluating slope stability remains a significant challenge due to inherent soil variability and environmental uncertainty. This study explores the application of Artificial Neural Networks (ANN) in predicting the factor of safety (FoS) of slopes using dimensionless input variables. An initial dataset of 349 samples was refined to 259 validated cases after removing outliers and incomplete entries. The input parameters were transformed into nondimensional forms c / γh, (tan(⌀)) / (tan (β)), and p / γh based on fluid mechanics principles to improve generalization and reduce dimensional bias. A feedforward ANN model …

Sleep Disorder Diagnosis Using Eeg Signals And Lstm Deep Learning Method, Mohammad Reza Yousefi, Reza Rahimi

NJF Intelligent Engineering Journal

Diagnosing brain disorders, particularly sleep disorders, has emerged as a critical area of research in both basic sciences and engineering. Sleep disorders encompass a range of conditions, including excessive or insufficient sleep, frequent awakenings, difficulty falling asleep, and challenges in reaching deep sleep stages. A key application of sleep disorder diagnosis lies in supporting the medical community through the development of advanced algorithms and models capable of accurately identifying these disorders based on individual brain signals, such as those captured by electroencephalography (EEG). These sophisticated approaches facilitate the creation of personalized treatment programs, paving the way for more targeted and …

Culturally Responsive Occupational Therapy Treatment Guide For African-American And Hispanic People With Eating Disorders, Desere N. Cooper

Student Capstone Papers

This capstone project addressed the critical need for a culturally responsive approach to occupational therapy in the treatment of African-American and Hispanic with eating disorders (EDs) in the United States. Although EDs impair physical, cognitive, and psychosocial functioning, these communities often encounter systemic barriers such as cultural stigma, food insecurity, and inadequate assessment tools rooted in Eurocentric norms—that contribute to underdiagnosis, limited access to care, and poorer outcomes. The central issue addressed was the absence of clear, culturally relevant guidance for occupational therapy practitioners working with these underserved populations. The project was informed by a comprehensive literature review and synthesis …

Stewardship, Generosity, And Percentage Giving Changing Attitudes On Financial Generosity Through Bible Study Concerning The Tithe For The New Testament Christians Of Good Shepherd Lutheran Church In Kingman, Az, Timothy A. Barkett

Doctor of Ministry Major Applied Project

The Church today finds itself navigating a landscape shaped by economic uncertainty, generational shifts, and a growing sense of spiritual indifference. Within this context, generosity continues to serve as a profound expression of both faith and mission. The research presented in this project affirms that when generosity is taught with a spirit of grace, rooted in Scripture, and exemplified by leadership, it has the power to bring renewal—not only to individual believers but also to entire communities. In an era characterized by financial anxiety and spiritual consumerism, the biblical and theological foundations of stewardship and generosity provide both a necessary …

Enhancing Access And User Engagement Through The Implementation Of The Library Mobile App, Kebede H. Wordofa

The Southeastern Librarian

Mobile applications (apps) are prevalent across all sectors, including libraries. Today, libraries are in-creasingly adopting mobile technologies to enhance the delivery of resources and services to smartphone and tablet users (Singh & Madhusudhan, 2023). This article presents a case study of the implementation of the Ex Libris Library Mobile App by the Woodward Library at Austin Peay State University (APSU) to improve access to library resources, enhance service delivery, and promote user interaction. The article discusses the app platform, design features, the app’s benefits, and the various resources and services made available through the app. It also highlights the app …

Southeastern Librarian 73(2) Summer 2025 (Full Issue)

The Southeastern Librarian

Complete issue of The Southeastern Librarian Volume 73 Number 2

Nanofluid-Enhanced Hvac&R Systems (2015–2025): Experimental, Numerical, And Ai-Driven Insights With A Strategic Roadmap, Aung Myat, Md Mashiur Rahman, Muhammad Akbar

Mechanical and Manufacturing Engineering Faculty Research

Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems account for a significant share of global energy demand, prompting intensive research into advanced thermal enhancement techniques. Among these, nanofluids—colloidal suspensions of nanoparticles in base fluids—have shown promise in boosting heat transfer performance. This review provides a structured and critical evaluation of nanofluid applications in HVAC&R systems, synthesizing research published from 2015 to 2025. A total of 200 peer-reviewed articles were selected from an initial pool of over 900 through a systematic filtering process. The selected literature was thematically categorized into experimental, numerical, hybrid, and AI/ML-based studies, with further classification by fluid …

Planetary Health: At The Crossroads Of Cvd Prevention, Tasveer Khawaja, Sanjay Rajagopalan

Faculty Scholarship

Purpose of Review: To highlight important recent findings demonstrating the interconnectedness of planetary and human health with a focus on cardiovascular disease. Recent Findings: Data continue to demonstrate a clear interconnectedness between the health of the planet and human health, with cardiovascular disease as an important outcome. The central roles of air pollution, non-optimal temperatures, water/waste management, and food/biodiversity are highlighted. We also highlight the clear opportunity for healthcare organizations to facilitate change that will yield positive environmental and patient outcomes. Summary: The undeniable interconnectedness of the health of the planet and human health serves as a call to action …