Digital Commons Network^™

Mass Transfer Control In Chitosan-Based Hybrid Material Incorporating Pyromellitic Dianhydride And Copper Oxide Nanoparticles: Intraparticle Diffusion And Boyd Model Analysis, Arwa Raad Ibrahim, Basma A. Abdul Majeed, Sanaa A. Al-Sahib

Baghdad Science Journal

The accelerated development of new technologies for treating pollutants has led to the emergence of numerous innovative adsorbents. These materials typically possess promising structural and surface properties suitable for a variety of applications. In the same context, the present study prepared a chitosan-based hybrid material incorporating pyromellitic dianhydride and copper oxide nanoparticles (PMDA-Cts-CuO) under ultrasonic wave conditions. It is a newly synthesized material derived from an organically degradable source for lead removal purposes. Following the confirmation of the material's structural and morphological properties, the current research effort focused on examining the PMDA-Cts-CuO for diffusion kinetic models: the intraparticle diffusion model, …

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 × …

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 …

Editorial Note To The Article “Identification Of A Previously Unrecognized Listric Fault Beneath The Acıpayam Graben: Insights From Integrated Dinsar And Field Observations” [Turkish Journal Of Earth Sciences 35 (1) 2026 20-41], Orhan Tatar

Turkish Journal of Earth Sciences

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit Draft Final 2023 Insufficiently Reclaimed Sites Sampling: Bres No. 93 – Soudan Dump Site Evaluation Summary Report, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Clark Tailings Consolidated Waste Management Area (Ctcwma) Site Investigation Quality Assurance Project Plan (Qapp) Revision 0 (2026) Request For Change (Rfc)-2026-001 (Dated September 8, 2026), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final Reclamation Improvement Field Sampling And Investigation Plan: Bres No. 68 – Little Mina-2, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final Reclamation Improvement Field Sampling And Investigation Plan: Bres No. 57 – Little Mina-1, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final Reclamation Improvement Field Sampling And Investigation Plan: Bres No. 9 – Clark Street Dump, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

A Quad-Port Dual-Band Elliptical Patch Mimo Antenna For 5g And Wlan Applications, Livingstone L. Kimaro, Hashimu Uledi Iddi, Mussa M. Kissaka, Neema S. Joseph

Tanzania Journal of Engineering and Technology (TJET)

A dual-band multiple-input multiple-output (MIMO) antenna for wireless local area network (WLAN) and fifth-generation new radio (5G NR) band n104 applications is presented. Two U-shaped slots interconnected back to back are etched on an elliptical shaped patch, four identical patch elements are then arranged orthogonally to form a quad-port antenna that resonates at 5.8 GHz and 6.7 GHz. Without additional extrinsic decoupling structures, the proposed design achieves measured isolation levels above 25.13 dB and 21.31dB, realized gains of 7 dBi and 7.2 dBi and -10 dB impedance bandwidths of 155.4 MHz and 90 MHz in the lower and upper frequency …

Design Of Permanent Magnet Synchronous Motor For Railways Traction Application, Anna S. Mwang'onda, Jackson J. Justo, Francis Mwasilu

Tanzania Journal of Engineering and Technology (TJET)

This paper presents the design of surface mounted permanent magnet synchronous motor (SMPMSM) intended for traction applications in standard gauge railway (SGR) for passengers. The proposed motor is rated 350 kW with a base speed of 3000 rpm. Moreover, speed control strategy with stability analysis is incorporated in the design to validate the performance of the SPMSM. The simulation results achieved a torque of approximately 1115 Nm at a terminal voltage of 800 V. The flux linkage of 150 mVs which ensures effective electromagnetic pertinence while maintaining safe magnetic loading because the flux density is less than 1.5 T. The …

Possible Fluid Contributions From Active Faults To Mercury Distribution In Surface Sediments Of The Gemlik Gulf And Health Risk Assessment, Erol Sari, M. Namik Çağatay, Tuğçe Nagi̇han Arslan Kaya, Zeynep Çeti̇n, Nuray Çağlar

Turkish Journal of Earth Sciences

The Gemlik Gulf, located in the eastern part of the Sea of Marmara (Türkiye), is recognized as a relatively contaminated marine environment, influenced by a variety of natural and anthropogenic inputs. A comprehensive geochemical study was performed to examine the distribution of total mercury (THg) in surface sediments and to elucidate the possible sources contributing to its accumulation. The analysis revealed that THg concentrations ranged from 485 to 6486 ng/g, with all measured values substantially exceeding the average shale background concentration of 400 ng/g, indicating significant enrichment. According to sediment quality guidelines, none of the samples exceeded the effects range …

Citation Scope And Scientific Relevance In An Event-Based Seismotectonic Study: Reply To The Comment By Elitez On Eski (2026), Semi̇h Eski̇

Turkish Journal of Earth Sciences

No abstract provided.

Trustworthy Golden-Subject Identification For Motor Imagery Brain-Computer Interface Applications Using A Unified Fwzic-Vikor Framework, Ghadeer Ghazi Shayea

Mesopotamian Journal of Computer Science

Motor imagery-based brain-computer interfaces (MI-BCIs) remain limited by inter-subject variability, nonstationary EEG characteristics, and the difficulty of identifying a reliable golden subject for subject-to-subject transfer learning. Previous version of HAFL study used fuzzy decision by opinion score method (FDOSM) to identify a golden subject. However, the decision-making layer can be strengthened by explicitly separating criteria weighting from compromise ranking. This study extends the published framework by developing a unified 9 × 18 Golden Subject Decision Matrix (UGSDM), where nine subjects are evaluated simultaneously across nine training-phase criteria and nine evaluation-phase criteria. FWZIC is used to calculate the importance weights of …

Dataset For Snow Pit And Snow Strength Data From Colorado, Idaho, Alaska, And Wyoming During The 2025–2026 Winter, Coleman Kane, Kelly Elder, Katherine Gura, Stine Pedersen, H.P. Marshall, Jihan Dahanayaka

CryoGARS Snow Data

This dataset contains snowpack and snow strength observations from three study plots in Idaho, five study plots in Colorado,  three study plots in Alaska, and four study plots in Wyoming.  These data were collected in an effort to model the trafficability and supportability of a seasonal snowpack, and will be assimilated in SnowModel to model strength across time and space.  Data collected include stratigraphy, density, permittivity, temperature, specific surface area (SSA), snow depth transects, ram penetrometer profiles, Snow Scope profiles, SnowMicroPen (SMP) profiles.

2026 - Faculty & Staff Research Symposium, Elizabeth Outka, Lidia Radi

Faculty and Staff Research Symposium Programs

[Excerpt from the "Welcome"]

Dear Colleagues,

Welcome to the third Faculty & Staff Research Symposium!

The Symposium offers us the chance to come together as a community and learn about the inspiring work happening across our campus. Faculty and staff continue to push the boundaries of research, to design and maintain new learning and gathering spaces, to craft remarkable art and performances, and to develop innovative programs that enrich our collective experience. The event is meant to spark curiosity, build connections, inspire partnerships, and open new pathways for exploration. . . .

This symposium is your creation — it thrives …

"Nitrate Plant Number Two", William Lindsey Mcdonald

Research Articles

Tennessee Valley Authority Nitrate Plant Two was constructed in Muscle Shoals, Alabama after President Woodrow Wilson authorized the project in 1916. The plant was one of two nitrate plants in the area. The first TVA nitrate plant is in Sheffield Alabama. Photographs of the employee housing and support facilities associated with the nitrate plants are available in the Nitrate Plant Image Gallery.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final Reclamation Improvement Field Sampling And Investigation Plan: Bres No. 171 – Blaine Center, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final Reclamation Improvement Field Sampling And Investigation Plan: Bres No. 180 – Tullamore Dump, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit Draft Final Reclamation Improvement Field Sampling And Investigation Plan: Bres No. 75 – National Dump, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft Final Reclamation Improvement Field Sampling And Investigation Plan: Bres No. 160s – Syndicate Pit Dumps, Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Approval Letter For The Butte Priority Soils Operable Unit (Bpsou) Clark Tailings Consolidated Waste Management Area (Ctcwma) Site Investigation Quality Assurance Project Plan (Qapp) (Dated August 14, 2026), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Impact Of Sexual Orientation On Syphilis Diagnosis Among African American Men In Colorado, Emmanuel Bhatti

Walden Dissertations and Doctoral Studies

Syphilis remains an ongoing public health concern among African American men. Elevated rates during the COVID-19 pandemic further underscored the need for focused attention on this population. The risk factors driving syphilis diagnosis among African American men during a pandemic like COVID-19 remain poorly understood. The purpose of this quantitative cross-sectional study was to examine the association between sexual orientation and syphilis diagnosis among African American men in Colorado. Social cognitive theory was applied to understand the interaction among sexual orientation, HIV status, age, and syphilis diagnosis. Sexual orientation categories include men who have sex with men (MSM), men who …

Thermal Monitoring Of Solidification In Molded Casting Of Drone Landing Leg, Sadettin Cem Altıparmak, Maher Zayed, Samuel Hawk, Mohamed Baddi, Jesus Degollado, Ahmed Bendaouia, Jianzhi Li

Manufacturing & Industrial Engineering Faculty Publications

This paper presents the design, fabrication, and thermal characterization of an acrylonitrile butadiene styrene (ABS) mold produced by fused deposition modeling (FDM) extrusion-based additive manufacturing used for the wax casting of a drone landing leg. A thermal monitoring framework, consisting of four K-type thermocouples logged at 1 s intervals, was deployed across six casting trials to capture the complete solidification cycle, yielding 84,717 time-stamped measurements. The study focuses on thermal data analysis and materials science interpretation through descriptive statistics, normality diagnostics, inter-trial Kruskal–Wallis tests, phase-duration analysis, rolling-variance monitoring, and inter-channel Pearson correlation. Key findings include a persistent spatial temperature hierarchy …

Quantum Chemical Calculations On The Inhibition Of Mild Steel Corrosion In Acidic Medium Using Phenylpropanoids Of Alpinia Galanga, Maimoonah Khalid Qasim

Baghdad Science Journal

Mild steel protection against acid-related degradation requires corrosion inhibition methods as its primary safeguarding approach. The study evaluated phenylpropanoid compounds of Alpinia galanga as corrosion inhibitors through density functional theory (DFT) calculations to determine their inhibitory effectiveness. This paper conducted studies to determine which parts of the corrosion inhibitors served as active sites while analyzing their inhibiting effects. DFT calculations helped identify the locations where inhibitors acted as active sites. The experimental results demonstrated important distinctions in the total corrosion inhibition ability between the various phenylpropanoids present in Alpinia Galanga compounds. The experimental potentiodynamic polarization tests demonstrated inhibition efficiencies (IE) …

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 …

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 …

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 …

Countries Playing Monopoly With Carbon Dollars: International Edition, Santina Gatti

Fresh Voices: Composition at Cal Poly

No abstract provided.

Development Vs. Preservation, Ben Weaver

Fresh Voices: Composition at Cal Poly

No abstract provided.