Digital Commons Network^™

Levels, Human Exposure And Health Risk Assessment Of Heavy Metals In Indoor And Outdoor Dust From Basra, Iraq, Mohammed A. Al-Hilfi, Layla Salih Al-Omran, Adil A. Al-Fregi

Baghdad Science Journal

This study determined the levels and distribution patterns of Pb, Cd, Co, Cu, Ni, and Zn in indoor (n = 22) and outdoor (n = 22) dust from Basra, Iraq, and evaluated the associated human health risks. The total mean concentration of ∑ ₆HMs was 247 mg/kg in the indoor dust and 285 mg/kg in the outdoor dust. Zn was the dominant metal in both environments, with mean concentrations of 155 and 161 mg/kg, contributing 63% and 56% of the total metal burden, respectively. Pb, Cd, Co, and Ni concentrations were significantly higher (p < 0.05) in outdoor dust, indicating the influence of outdoor emission sources. Human exposure assessment showed that the average daily doses (ADD) for children through ingestion, inhalation, and dermal contact were approximately 9.3-fold higher than those for adults across all metals. Zn exposure reached 1.99 × 10^-3 and 2.13 × …

Approximation Of Bi-Continuous Semigroups In The Trotter-Kato Framework: Application To Diffusion Equations With Non-Local Boundary Conditions, Abdulhameed Qahtan Abbood Altai

Baghdad Science Journal

This study develops and practically reformulates the Trotter–Kato theorem for the approximation of bi-continuous semigroups defined on Banach spaces with weaker locally convex Hausdorff topologies. This method extends the Trotter–Kato framework to semigroups with weak continuity by moving the analysis from the classical norm topology to a weaker topology. Equivalence and approximation conditions are derived without requiring explicit computation of resolvents, replacing them with T-stability and T-consistency properties. This new reformulation of the Trotter–Kato theorem provides a direct method for establishing convergence between approximating and limit semigroups, thereby simplifying both theoretical proofs and numerical analysis. The suggested framework …

Surface Wave Propagation At The Interface Between An Inviscid Liquid Layer And A Rotating Micropolar Elastic Solid With Stretch, Somaiah Kamidi, Narsimharao Kandula, Venkateswara Rao Burugu, Gaddam Rajkumar, Srinivas Remidi

Baghdad Science Journal

This article investigates the impact of angular rotation on surface-wave propagation at the interface between an inviscid liquid layer and a rotating micropolar elastic solid with stretch. The surface-wave secular equation is obtained analytically using the plane-harmonic solution method after the mathematical model has been developed. It is noticed that for symmetric modes of surface waves, the liquid effects and the micro-stretch do not manifest simultaneously. Using MATLAB software, the impacts of the solid's angular rotation and the liquid layer's thickness on the symmetric mode of surface waves are illustrated for a specific model. The velocity of surface waves at …

Open Access Publishing, Kathleen A. Siry

AFIT Library Knowledge Base

No abstract provided.

Faktor-Faktor Yang Berhubungan Dengan Kejadian Prediabetes Pada Perawat Di Rumah Sakit X Tahun 2025, Putri Nurhaliza, Chandrayani Simanjorang, Agung Raharjo

Jurnal Biostatistik, Kependudukan, dan Informatika Kesehatan

Prediabetes dapat berkembang menjadi diabetes melitus dan meningkatkan risiko penyakit kardiovaskular. Selain itu, beban ekonomi juga meningkat akibat tingginya biaya pelayanan kesehatan dan penurunan produktivitas kerja. Salah satu kelompok berisiko prediabetes adalah perawat karena karakteristik pekerjaannya, seperti penerapan sistem kerja sif serta tingginya beban dan tekanan kerja yang dapat memicu stres. Penelitian ini dilakukan untuk mengidentifikasi faktor-faktor yang berhubungan dengan kejadian prediabetes pada perawat di Rumah Sakit X pada tahun 2025. Desain studi yang digunakan adalah cross-sectional dengan sumber data primer yang dikumpulkan melalui pengisian kuesioner dan data sekunder yang diperoleh dari laporan hasil medical check-up tahun 2025. Populasi dalam …

Sequential Environmental Control And Perceived Comfort In Virtual Post-Occupancy Evaluation Of Educational Spaces, Rund Hiyasat, Alreem Almemari, Laurens Luyten, Lindita Bande, Alyazia Alameri

All Works

Purpose – Comfort discrepancies frequently persist in operational educational buildings despite compliance with indoor environmental quality (IEQ) standards. This study examines how perceived comfort evolves across sequential environmental configurations in immersive virtual reality (VR) when limited environmental control is introduced and subsequently withdrawn. Design/methodology/approach – A repeated-measures experiment was conducted with 81 university students performing an identical spatial task across three conditions within the same virtual classroom: baseline, user-choice (selection of one IEQ dimension: sound, thermal, or lighting), and programmed reversion to baseline. Overall perceived comfort was assessed after each exposure. Findings – Comfort increased significantly following the introduction of …

Comparison Of Preenrichment And Screening Methods For The Detection Of Salmonella Enterica Serovar Agona In Meat Analog Products, Kylie Sacapano, Amanda Tabb, Biola Fatusin, Samantha M. Covaia, Isha Shingre, Lieuchi Phan, Kyson Chou, Jamie Du, Beilei Ge, Donna Williams-Hill, Rosalee S. Hellberg

Food Science Faculty Articles and Research

With the growing demand and variety of meat analogs on the commercial market, there is a need to revisit testing methods for foodborne pathogens in these products. The U.S. Food and Drug Administration (FDA) regulatory methods for Salmonella enterica detection in meat analogs follow the Bacteriological Analytical Manual and are relatively time-consuming. Therefore, this study aimed to compare preenrichment and screening methods for the detection of Salmonella in meat analogs by evaluating current FDA reference methods alongside alternative preenrichment broths and rapid molecular screening techniques. Meat analog samples were inoculated with S. enterica serovar Agona at three levels: (1) uninoculated …

Iatrogenic Pseudoaneurysm After Arthroscopic Knee Procedures: A Systematic Review Of Presenting Features, Injured Vessels, Management, And Outcomes, Ethan J. Sack, Max Deneroff, Zubair Mohammed, Austin Khau, Chadi Ellaham, Jared Nichols

Student Publications

Pseudoaneurysm after arthroscopic knee procedures is uncommon but clinically important because it can initially resemble routine postoperative swelling, hematoma, recurrent hemarthrosis, deep vein thrombosis, infection, or compartment syndrome. PubMed, Embase, and Scopus were searched through July 9, 2026. The original database pathway yielded 312 records and 54 included reports representing 60 patient cases. During peer-review citation audit, three additional potentially eligible reports were identified; two full texts were retrieved and included, while one report could not be retrieved and was not used for patient-level inference. The final synthesis therefore included 56 reports and 62 patient cases. Using a mutually exclusive …

Statistical Triangulation: Weighing Multiple Statistical Tools In Macro-Level Housing Research, Julio Montanez, Amy Donley, Jacquelyn Reiss

Journal of Applied Disciplines

Homelessness and housing research has a detection problem, in which understanding housing issues (e.g., substandard housing) is plagued by problems like undercounting and incomplete data. To partially compensate for these pitfalls, the current research engages in an exercise aiming to sharpen the statistical approach to homelessness and housing research. The macro-level sample included Florida’s 27 Continuums of Care geographies (composed of one or more Florida counties). The dependent variables were sheltered homelessness, energy-based substandard housing, and plumbing-based substandard housing. The independent variables were misdemeanor partner violence rates, felony partner violence rates, high school non-completion rates, urbanicity, and population burdens of …

Development Vs. Preservation, Ben Weaver

Fresh Voices: Composition at Cal Poly

No abstract provided.

Safety In Los Angeles County Public Transit?, Chris Liu

Fresh Voices: Composition at Cal Poly

No abstract provided.

Taking Back The Streets, Paige Ross

Fresh Voices: Composition at Cal Poly

No abstract provided.

Chatgpt In Education: Examining The Impact And Ethical Dilemmas Of Ai Integration, Noah Alloun

Fresh Voices: Composition at Cal Poly

No abstract provided.

Amazon: A Double-Edged Sword For Small Businesses, Leorie Yosian

Fresh Voices: Composition at Cal Poly

No abstract provided.

Where Different Matters, Madeleine Colbert

Fresh Voices: Composition at Cal Poly

No abstract provided.

The Pad Slo, Trinity Mak

Fresh Voices: Composition at Cal Poly

No abstract provided.

The Fossil Pearls Of The Million-Pearls Flowstone, Fairgrounds Room, Fort Stanton Cave, New Mexico Usa, Victor J. Polyak, Paula P. Provencio, Yemane Asmerom

International Journal of Speleology

‘Fossil’ cave pearls in the Fairgrounds Room of Fort Stanton Cave form two distinct layers in a flowstone sample, FS-14-2. The flowstone in the Fairgrounds Room covers a mud-silt bank and the extinct streambed that extends across the room. Uranium-series dates of two pieces of flowstone from this room, one piece from the higher end of the flowstone (FS-14-1, devoid of pearls), and another piece from the lower end of the flowstone (FS-14-2, rich in pearls), show that the flowstone was deposited during the Last Glacial period (60,000 to 11,000 yr BP).  The two cave-pearl layers in FS-14-2 yielded U-series …

Scientific Skulduggery: Richard Harlan's Appropriation Of John Bachman's Claim To Discovery Of The Marsh Rice Rat, Lester D. Stephens

Georgia Journal of Science

In 1816, the noted mammalogist and clergyman John Bachman collected a new cricetid rodent, the marsh rice rat Oryzomys palustris (Harlan, 1838). Because of his demanding schedule, however, he did not draft a description of the animal until 1836, when, prompted by his friend John James Audubon, he submitted a copy to the Academy of Natural Sciences of Philadelphia for publication in its Proceedings. Proposing the name Arvicola oryzivora for the rat, he asked the naturalist and associate of the Academy Richard Harlan to compare the skin with a related species described by George Ord in 1825. In a …

Historical Redlining, Walkability, And Green Gentrification In Baltimore, Usa, Rafael B. De Andrade, Ella Baynes, Vanessa Belt, Joseph Colasacco, Camden Speilman

The Geographical Bulletin

Historical redlining created persistent patterns of racial segregation and spatial inequality in American cities. However, urban initiatives aimed at increasing green spaces in these neighborhoods increasingly trigger gentrification that can displace original residents. In this study, we examine the spatial intersection of 1930s-era Home Owners' Loan Corporation (HOLC) redlining boundaries, current property values, and multimodal park accessibility in Baltimore, Maryland. Using geographic data from 245 properties and 13 major parks, we developed an accessibility framework incorporating walking, public transit, and automobile travel modes to estimate accessibility to green spaces across neighborhoods with different redlining histories. Our spatial analysis reveals that …

Data-Driven Risk Mapping For Safer Roads: Unincorporated Dekalb County, Georgia, Getachew B. Demisse, Stacy C. Grear, Araya D. Araya, Shimelis Gebru, Solomon Negash, Leo Ladefian, Carlo Frate

The Geographical Bulletin

This study presents a decade-long spatiotemporal analysis of more than 206,000 traffic accidents recorded between 2015 and 2024 in unincorporated DeKalb County, Georgia. The primary goal of the study is to identify critical patterns of roadway risk and inform data‑driven safety interventions. Using crash records from the Georgia Department of Transportation (GDOT) AASHTOWare Safety platform and standardized crash‑rate calculations, the analysis revealed strong temporal regularities, including elevated crash frequencies during afternoon peak hours, Fridays, and seasonal transition periods such as October. Spatial analyses further demonstrate that crashes are highly concentrated along a limited subset of corridors, consistent with High Injury …

Volume 67-1, May 2026, Nancy Hoalst Pullen, Mark W. Patterson

The Geographical Bulletin

Volume 67-1, May 2026: Complete

Cover And Foreword, Nancy Hoalst Pullen, Mark W. Patterson

The Geographical Bulletin

Cover and Foreword

Diversity Of Forest Vegetation In The Quarry Landscapes Of Central Polissia, Ukraine (Eastern Europe), Ivan Khomiak, Oleksandr Harbar, Ruslana Vlasenko, Tamara Andriichuk, Oleksandr Lavryk

The Geographical Bulletin

The features of territorial differentiation of vegetation in quarry landscapes are crucial for addressing theoretical issues in landscape science and applied problems of restoration ecology. This study aims to establish the phytocenotic diversity of forest communities. The forest vegetation of the quarry landscapes of Central Polissia includes 7 classes, 9 orders, 15 unions, 24 associations, and 2 groups of undetermined rank. Based on phytocenotic diversity, the quarries of Zhytomyr Polissia fall into three distinct zones: northern, central, and southern. The northern zone necessarily includes groupings of the Vaccinio-Piceetea class and excludes Salicetea purpurea. The central zone mainly features derived forests …

Flexural Performance Of Nsm-Cfrp Strengthened Corroded Rc Prisms Under Freeze-Thaw And Wet-Dry Cycles, Zainab Abdulsattar Ghali, Maan S. Hassan

Engineering and Technology Journal

This study investigates the combined effects of corrosion level and environmental exposure on flexural behaviour of corroded reinforced concrete (RC) prisms repaired with self-compacted concrete (SCC) and strengthened with a near-surface-mounted (NSM) carbon fibre-reinforced polymer (CFRP) system. Two accelerated corrosion levels (10% and 30%) were introduced before repair. The damaged concrete cover was removed and recast using self-compacting concrete (SCC), followed by NSM-CFRP strengthening. The repaired prisms were then exposed to standard laboratory conditions (ST), 300 freeze-thaw (FT) cycles, or 50 wet-dry (DW) cycles before flexural testing. Corrosion reduced the stiffness and load-carrying capacity of the RC prisms. The NSM-CFRP …

Chemical Composition And Mechanism Investigation Of Subfraction From Wuwei Zijin San Guided By Anti-Hepatic Fibrosis Activity, Yazhen Guo, Zhongzhi Qi, Yajuan Chen, Lijuan Nie, Mingyu Luo, Yuechen Guo, Hui Wu, Bengui Ye, Jun He

Journal of Food and Drug Analysis

BACKGROUND  Among the spectrum of hepatopathies that pose a significant global health threat, halting the progression of hepatic fibrosis is a key therapeutic objective. Wuwei Zijin San (WWZJS) is derived from a traditional Tibetan empirical formula, yet its efficacy against hepatic fibrosis, along with the underlying mechanisms and active ingredients, remains uncertain.

PURPOSE  The aim of this study was to investigate the protective effect of WWZJS against hepatic fibrosis, explore its underlying mechanisms and material basis, and evaluate the potential of direct interactions between the biologically active ingredients and their corresponding targets.

METHODS Chemical profiling of the active …

A Calibrated And Conformal Deep Learning Framework For Trustworthy Antinuclear Antibody Pattern Recognition With Selective Referral To Experts, Hussein Ali Hussein Al Naffakh, Ahmed Dheyaa Radhi, Raghdah Maytham Hameed, Muntaha Abdullah Reishaan, Fouad A. Majeed, Rozaida Ghazali

Karbala International Journal of Modern Science

Reading antinuclear antibody patterns on human epithelial cells by indirect immunofluorescence is the reference screen for systemic autoimmune rheumatic diseases, but it is slow, subjective, and variable between observers. Deep learning reaches high accuracy on this task, yet most systems return a single prediction without stating how reliable it is, which is unsafe in a diagnostic workflow. This paper presents an intelligent decision support framework built around a single calibrated uncertainty signal. That signal is the control variable for four reliability modules: confidence calibration, conformal prediction, error detection, and selective referral. A feature space out of distribution detector serves as …

Study Of Primer Efficiency And Relative Genetic Band Abundance In Different Genotypes, Mundher Kh. Jabbar

Karbala International Journal of Modern Science

This experiment was aimed to find some indicators related to primers and genetic variations. Six bread wheat genotypes were selected as the dataset. The RAPD marker technique was used with oligonucleotide primers as marker of study. The goal was to identify factors used for the relationship between primers and their ability to elicit DNA fragments through different genotypes, as well as the relative genetic band abundance among genotypes. After the designed factors, key findings emerged: in relative primer amplification rate, C1 genotype exhibited a higher relative primer amplification rate (RPAR) of fragments from OP-H01 but did not differ from OP-V19 …

Public Sector Experiences Of Disruptions In The Psychological Contract: The Influence Of Ideological Currency And Digital Transformation On Public Servants, Willemijn Van Haeften, Xander Lub, Pascal Ravesteijn, Pascale Peters

Communications of the IIMA

Digital transformation is reshaping public-sector work and may alter how public servants evaluate their psychological contract with their employer. This research-in-progress examines how critical incidents associated with digital transformation disrupt psychological contracts and how ideological currency, the perceived commitment to valued societal causes or principles, shapes subsequent trajectories toward renegotiation, repair, or exit. The study uses a qualitative phenomenological design based on semi-structured interviews with 20 employees from five Dutch municipalities experiencing transformation-related changes. The Critical Incident Technique is combined with the dynamic psychological contract phase model to reconstruct disruption trajectories, while thematic analysis identifies recurring patterns across cases. Preliminary …

September 17, 2026

The Breeze, 2020-

No abstract provided.

Exploring The Role Of Mentorship For Urban African American Underprivileged Students Who Participate In Band Programs: A Case Study, Tyreese Lamar Pleasanton

Doctoral Dissertations and Projects

Underprivileged urban African American students who participate in band programs benefit from transformative mentorship within a culturally relevant support system. By providing access to environmental resources and equitable opportunities, mentors play a critical role in promoting academic achievement, social-emotional growth, and cultural pride. This study investigates the impact of mentorship on student outcomes in urban settings, highlights distinctive African American experiences, identifies structural barriers, and proposes relationship-based strategies to advance educational equity through culturally responsive support. Data will be collected through surveys, interviews, observations, and thematic analysis, with a specific focus on current band directors. The findings will contribute to …