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Civil and Environmental Engineering Faculty Publications

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Full-Text Articles in Civil and Environmental Engineering

An Ensemble Learning-Based Approach To Quantify Post-Earthquake Functional Recovery Of A Steel Moment-Resisting Frame Inventory, Mohsen Zaker Esteghamati, Shiva Baddipalli Jun 2026

An Ensemble Learning-Based Approach To Quantify Post-Earthquake Functional Recovery Of A Steel Moment-Resisting Frame Inventory, Mohsen Zaker Esteghamati, Shiva Baddipalli

Civil and Environmental Engineering Faculty Publications

The quest for seismic resiliency requires designing for performance objectives beyond life safety. Functional recovery is an emerging objective often defined as the time required to restore a building’s basic functionality to the pre-event level. Nevertheless, quantifying functional recovery is a complex, computationally intensive process that is challenging to integrate into a standard design workflow. This study develops a machine learning (ML) model to map design and geometric features of steel special moment-resisting frames (SMRFs) to their functional recovery under two hazard levels: design-basis (DBE) and maximum considered (MCE) earthquakes. First, functional recovery time was quantified for an inventory of …

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Comparative Assessment Of Uav-Based Tseb And Field-Calibrated Aquacrop For Evapotranspiration On The Arid Coast Of Peru, Roxana Peña-Amaro, José Huanuqueño-Murillo, Lia Ramos-Fernández, Abel Ramos-Ayala, David Quispe-Tito, Lena Cruz-Villacorta, Elizabeth Heros-Aguilar, Edwin Pino-Vargas, Alfonso Torres-Rua Mar 2026

Comparative Assessment Of Uav-Based Tseb And Field-Calibrated Aquacrop For Evapotranspiration On The Arid Coast Of Peru, Roxana Peña-Amaro, José Huanuqueño-Murillo, Lia Ramos-Fernández, Abel Ramos-Ayala, David Quispe-Tito, Lena Cruz-Villacorta, Elizabeth Heros-Aguilar, Edwin Pino-Vargas, Alfonso Torres-Rua

Civil and Environmental Engineering Faculty Publications

Precise estimation of evapotranspiration (ET) is essential for sustainable water management in arid agroecosystems, particularly for high-water-demand crops such as rice. This study integrated very-high-resolution UAV thermal–multispectral imagery with a Two-Source Energy Balance model (UAV–TSEB) and a field-calibrated AquaCrop model to quantify daily ET and its components under continuous flooding on the arid Peruvian coast during the 2024–2025 season. A network of 24 drainage lysimeters provided an independent observational benchmark (ETlys); to represent the treatment-level response, lysimeter observations were aggregated as the mean across the 24 units for each UAV campaign. Thirteen UAV surveys supplied radiometric surface temperature …

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Predicting Tart Cherry Stem Water Potential Using Uav Multispectral Imagery And Environmental Data Via Symbolic Regression, Anderson L. S. Safre, Alfonso Torres-Rua, Kurt Wedegaertner, Brent Black, Brennan Bean, Burdette Barker, Matt Yost Mar 2026

Predicting Tart Cherry Stem Water Potential Using Uav Multispectral Imagery And Environmental Data Via Symbolic Regression, Anderson L. S. Safre, Alfonso Torres-Rua, Kurt Wedegaertner, Brent Black, Brennan Bean, Burdette Barker, Matt Yost

Civil and Environmental Engineering Faculty Publications

Tart cherry is an important fruit crop in Utah, where irrigation is essential due to arid conditions. Precision irrigation requires reliable indicators of plant water status, and stem water potential (Ψstem), is among the most sensitive though labor-intensive and spatially limited. This study develops Ψstem estimation models using high-resolution multispectral Unmanned Aerial Vehicle (UAV) imagery combined with meteorological and soil moisture data, applying Symbolic Regression (SR). Results show a stronger correlation between optical bands and Ψstem during the pre-harvest period. Among 85 vegetation indices, the Red Chromatic Coordinate (RCC) index performed best (R2 = 0.67). …

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Numerical Investigation Of A Dual-Mode Shape Memory Alloy Stent Enabling Secondary Expansion Via Focused Ultrasound: A Potential Strategy For Correcting In-Stent Restenosis, Stephen Asare, Lucinda Duncan, Josiah Owusu-Danquah, Brian L. Davis Feb 2026

Numerical Investigation Of A Dual-Mode Shape Memory Alloy Stent Enabling Secondary Expansion Via Focused Ultrasound: A Potential Strategy For Correcting In-Stent Restenosis, Stephen Asare, Lucinda Duncan, Josiah Owusu-Danquah, Brian L. Davis

Civil and Environmental Engineering Faculty Publications

Coronary stent implantation is an invasive procedure performed to correct atherosclerosis. The aftermath of this procedure is identified with neointimal hyperplasia, which contributes to in-stent restenosis (ISR), and thus remains a significant clinical challenge. This study introduces a novel, noninvasive conceptual approach for addressing ISR through the thermal activation of shape memory alloy (SMA) stent using focused ultrasound (FU) in a controlled manner to restore luminal patency. COMSOL Multiphysics and ABAQUS finite element software were employed to perform the numerical modeling to simulate the thermal and mechanical responses of the SMA stent integrated into the arterial wall. After 15 s …

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Preliminary Evaluation Of Remote Sensing Evapotranspiration Models For Field-Scale Agricultural Water Management In Arid Central Iran, Somayeh Sima, Iman Raissi Dehkordi, Mohammadhosein Taghikhani, Neamat Karimi Jan 2026

Preliminary Evaluation Of Remote Sensing Evapotranspiration Models For Field-Scale Agricultural Water Management In Arid Central Iran, Somayeh Sima, Iman Raissi Dehkordi, Mohammadhosein Taghikhani, Neamat Karimi

Civil and Environmental Engineering Faculty Publications

Accurate estimation of actual evapotranspiration (ETa) is crucial for effective water resource management and optimizing agricultural yields. While satellite-based surface energy balance ETa models are widely adopted, their field-scale accuracy in under-researched regions, such as Iran, remains a critical knowledge gap. This study assesses five prominent models—PySEBAL, PyMETRIC, SSEBop, PyTSEB, and ETLook (from FAO’s WaPOR v.2, L1 product)—for daily ETa estimation over an alfalfa field in the arid central part of Iran. Models were adjusted for the field using in situ weather data and Landsat-8 images, and validated against the scintillometer data. Results showed SSEBop provided …

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Mechanical, Durability, And Environmental Performance Of Limestone Powder-Modified Ultra-High-Performance Concrete, Yashovardhan Sharma, Meghana Yeluri, Srinivas Allena Dec 2025

Mechanical, Durability, And Environmental Performance Of Limestone Powder-Modified Ultra-High-Performance Concrete, Yashovardhan Sharma, Meghana Yeluri, Srinivas Allena

Civil and Environmental Engineering Faculty Publications

Ultra-high-performance concrete (UHPC) delivers outstanding durability and strength but typically relies on high Portland cement content. This study evaluates a 20% cement replacement with limestone powder (LP) in UHPC and benchmarks performance under two curing regimes: moist curing (MC) and warm bath curing at 90 degrees C (WB). Metrics include workability, compressive and flexural behavior, shrinkage, freeze-thaw resistance, chloride transport (surface resistivity, RCPT), material cost, and embodied CO2. LP improved fresh behavior: flow increased by 14.3% in plain UHPC and 33% in fiber-reinforced UHPC (FR-UHPC). Compressive strengths remained in the UHPC range at 28-56 days (approximately 142-152 MPa with LP), …

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Collaborative Research: Fair + R: Building The Future Of More Reproducible Water Research Through Community Best Practices, Software Tools, Cohort Building, And Policy Change., James H. Stagge, David E. Rosenberg, Sierra Young Dec 2025

Collaborative Research: Fair + R: Building The Future Of More Reproducible Water Research Through Community Best Practices, Software Tools, Cohort Building, And Policy Change., James H. Stagge, David E. Rosenberg, Sierra Young

Civil and Environmental Engineering Faculty Publications

This project aims to create a pathway towards a future, ten years from now, when a majority of published research across geosciences is not only FAIR (Findable, Accessible, Interoperable, and Reusable), but reproducible by a third party. Building on the Center for Open Science framework for cultural change, this project is organized around four scaffolded goals: improving infrastructure and tools, building community support, aligning incentives, and minimizing barriers to policy change. We will systematically analyze 300-500 publications from leading hydrology and water resources journal to quantify changes in reproducibility rates since 2017 and identify the tools and practices that best …

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New Collaborative Water Accounting Proposals To Protect Lake Powell And Lake Mead During Extreme Low Reservoir Storage And River Flow (Protect And Flexible During Crisis), David Rosenberg, Anabelle Myers, Brittany Fager, Erik Porse Nov 2025

New Collaborative Water Accounting Proposals To Protect Lake Powell And Lake Mead During Extreme Low Reservoir Storage And River Flow (Protect And Flexible During Crisis), David Rosenberg, Anabelle Myers, Brittany Fager, Erik Porse

Civil and Environmental Engineering Faculty Publications

Low Colorado River flows threaten to draw down Lake Powell and Lake Mead below their minimum power pool elevations. Additionally, the U.S. Federal Government through its Bureau of Reclamation (Reclamation) has set a new deadline for November 11, 2025 for new proposals to operate Lake Powell and Lake Mead after existing operations expire at the end of 2026. In a prior April 2025 post, we shared 13 reasons why we have hope for consensus on new operations (Rosenberg et al., 2026). One reason was that during crisis, rapid changes in policies and operations are possible. More recently, we asked the …

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An Integrated Decision Support System For Bim Level 3 Implementation, Lama Abumoeilak, Salwa Beheiry, Serter Atabay Oct 2025

An Integrated Decision Support System For Bim Level 3 Implementation, Lama Abumoeilak, Salwa Beheiry, Serter Atabay

Civil and Environmental Engineering Faculty Publications

The Architecture, Engineering, and Construction (AEC) sector accounts for 39% of greenhouse gas emissions, 40% of solid waste, and 12% of potablewater usage globally, underscoring the need for sustainable, efficient practices. Building Information Modeling (BIM) offers a digital framework to address these challenges through lifecycle management, collaboration, and efficiency gains. However, most organizations remain at BIM Level 2 maturity, which limits their potential for full integration. This study proposes a comprehensive Decision Support System (DSS) to facilitate the adoption of BIM Level 3, with an emphasis on collaboration, sustainability, and data interoperability. The DSS integrates Structural Equation Modeling (SEM), Analytical …

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Assessing Riparian Evapotranspiration Dynamics In A Water Conflict Region In Nebraska, Usa, Ivo Z. Gonçalves, Burdette Barker, Christopher M. U. Neale, Derrel L. Martin, Sammy Z. Akasheh Oct 2025

Assessing Riparian Evapotranspiration Dynamics In A Water Conflict Region In Nebraska, Usa, Ivo Z. Gonçalves, Burdette Barker, Christopher M. U. Neale, Derrel L. Martin, Sammy Z. Akasheh

Civil and Environmental Engineering Faculty Publications

The escalating pressure on water resources in agricultural regions has become a catalyst for water conflicts. The adoption of innovative approaches to estimate actual evapotranspiration (ETa) offers potential solutions to mitigate conflicts related to water usage. This research presents the application of a remote sensing-based methodology for estimating actual evapotranspiration (ETa) based on a two-source energy balance model (TSEB) for riparian vegetation in Nebraska, US using the Spatial EvapoTranspiration Modeling Interface (SETMI). Estimated results through SETMI and field data using the eddy covariance system (EC) considering the period 2008–2013 were used to validate the energy balance components and ETa. Modeled …

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How Low A Colorado River Flow To Go? Insights From Numerically Stabilizing Lake Powell And Lake Mead During Crisis, David Rosenberg, Anabelle Myers, Motasem Abualqumboz, Erik Porse Aug 2025

How Low A Colorado River Flow To Go? Insights From Numerically Stabilizing Lake Powell And Lake Mead During Crisis, David Rosenberg, Anabelle Myers, Motasem Abualqumboz, Erik Porse

Civil and Environmental Engineering Faculty Publications

Colorado River users are now discussing dividing river flow on a percentage basis (Fleck, 2025; Hager, 2025, Winslow, 2025). This is an important step to managing a declining and more volatile supply. In our prior May 2025 post, we shared a strategy we have worked on for several years— division of river flow—as one of 13 reasons why we have hope for consensus on Colorado River management. In this post, we address the question: How extreme low river flow and reservoir storage should we plan for going forward (Figure 1)? We also share our insights from numerically stabilizing and recovering …

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Editorial: Intelligent Robots For Agriculture -- Ag-Robot Development, Navigation, And Information Perception, Sierra N. Young Apr 2025

Editorial: Intelligent Robots For Agriculture -- Ag-Robot Development, Navigation, And Information Perception, Sierra N. Young

Civil and Environmental Engineering Faculty Publications

Agriculture is undergoing a paradigm shift driven by global challenges such as climate change, labor shortages, and the increasing demand for sustainable food production. In response, intelligent robotics are emerging as a transformative technology, enhancing agricultural efficiency, precision, and sustainability. This Research Topic, “Intelligent Robotics in Agriculture -- Ag-Robot Development, Navigation, and Information Perception,” highlights advancements in agricultural robotics, including breakthroughs in system design, autonomous navigation, multi-sensor fusion, and machine learning applications. The collected works contribute significantly to the evolving landscape of smart farming by addressing critical challenges in agricultural automation.

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Immersive Modeling To Communicate And Manage Risks Of Water Shortages, David Rosenberg, Erki Porse Feb 2025

Immersive Modeling To Communicate And Manage Risks Of Water Shortages, David Rosenberg, Erki Porse

Civil and Environmental Engineering Faculty Publications

Our project goal is to use immersive online collaborative modeling as a tool for active learning to communicate and manage users conflicting risks of water shortages because decisions now to manage risk effect future risk. State-of-the art river basin forecasting tools provide probabilistic estimates of streamflow at hourly to annual scales. Water resource models quantify tradeoffs and risk across hundreds or thousands of scenarios of inflow and demand forecast out decades. Our project objectives are: 1) Formulate extreme scenarios for reservoir inflows without probabilities one to three years out that pose imminent risk of water shortages. 2) Hold immersive model …

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Comparing Recovery Volumes Of Steady And Unsteady Injections Into An Aquifer Storage And Recovery Well, Saeid Masoudiashtiani, Richard C. Peralta Dec 2024

Comparing Recovery Volumes Of Steady And Unsteady Injections Into An Aquifer Storage And Recovery Well, Saeid Masoudiashtiani, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Aquifer Storage and Recovery (ASR) can involve injecting available surface water into an unconfined aquifer and then extracting it to provide secondary water for irrigation. This study demonstrates a method for evaluating the appropriateness of steady injection versus unsteady injection for an assumed situation. In design, it can be important to affect the transient: the proportion of the injected water that would be subsequently extracted (versus that remaining in the aquifer) and the proportion within the extracted water that would be an injectate (versus ambient groundwater). These proportions can be predicted from the predicted value of an ASR well's Recovery …

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Water Use Efficiency In Rice Under Alternative Wetting And Drying Technique Using Energy Balance Model With Uav Information And Aquacrop In Lambayeque, Peru, Lia Ramos-Fernández, Roxana Peña-Amaro, José Huanuqueño-Murillo, David Quipse-Tito, Mayra Maldonado-Huarhuachi, Elizabeth Heros-Aguilar, Lisveth Flores Del Pino, Edwin Pino-Vargas, Javier Quille-Mamani, Alfonso Torres-Rua Oct 2024

Water Use Efficiency In Rice Under Alternative Wetting And Drying Technique Using Energy Balance Model With Uav Information And Aquacrop In Lambayeque, Peru, Lia Ramos-Fernández, Roxana Peña-Amaro, José Huanuqueño-Murillo, David Quipse-Tito, Mayra Maldonado-Huarhuachi, Elizabeth Heros-Aguilar, Lisveth Flores Del Pino, Edwin Pino-Vargas, Javier Quille-Mamani, Alfonso Torres-Rua

Civil and Environmental Engineering Faculty Publications

In the context of global warming, rising air temperatures are increasing evapotranspiration (ETc) in all agricultural crops, including rice, a staple food worldwide. Simultaneously, the occurrence of droughts is reducing water availability, affecting traditional irrigation methods for rice cultivation (flood irrigation). The objective of this study was to determine ETc (water use) and yield performance in rice crop under different irrigation regimes: treatments with continuous flood irrigation (CF) and irrigations with alternating wetting and drying (AWD5, AWD10, and AWD20) in an experimental area in INIA–Vista Florida. Water balance, rice physiological data, …

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Combustion-Induced Endothermic Process In Carbon Dots Synthesized On Magnetite Nanoparticle Substrate, Khalid Zouhri, Luke J. Snyder, Michael Mcfarland, Parker O. Laubie, K. A. Shiral Fernando, Christopher E. Bunker May 2024

Combustion-Induced Endothermic Process In Carbon Dots Synthesized On Magnetite Nanoparticle Substrate, Khalid Zouhri, Luke J. Snyder, Michael Mcfarland, Parker O. Laubie, K. A. Shiral Fernando, Christopher E. Bunker

Civil and Environmental Engineering Faculty Publications

Carbon dots are synthesized alone and in the presence of commercial magnetite nanoparticles using a simple hydrothermal reaction. The spectroscopic and structural characteristics of CDot and CDot–magnetite materials are presented and their behaviors under combustion conditions are studied. A careful examination of their combustion behaviors reveals interesting results for the CDot–magnetite material: it undergoes early catalytic combustion at ~200°C and a strong endothermic process that quenches combustion. By investigating the physical mixtures of pre-formed CDots and magnetite and the starting material ascorbic acid and magnetite, it is determined that the strong endothermic behavior requires intimate interactions between the carbon source …

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Water Banking As A Strategy For The Management And Conservation Of A Critical Resource: A Case Study From Tunisia's Medjerda River Basin (Mrb), Aymen Sawassi, Roula Khadra, Brian Crookston May 2024

Water Banking As A Strategy For The Management And Conservation Of A Critical Resource: A Case Study From Tunisia's Medjerda River Basin (Mrb), Aymen Sawassi, Roula Khadra, Brian Crookston

Civil and Environmental Engineering Faculty Publications

The increasingly adverse impacts of climate change (e.g., rainfall patterns, droughts, and floods), coupled with the ever-increasing water demands, are often translated into a contingent liability for water users' communities. Additional complexities arise due to competing priorities, water rights, and transboundary water sources. Therefore, conventional water management practices should shift toward more comprehensive and responsive integrative approaches, even for systems with limited data. Furthermore, water managers must prioritize dynamic and interactive management techniques for existing systems. One such management technique is water banking, which is the focus of this study. Herein, a dynamic interactive water allocation model, which encompasses the …

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Lessons From Immersive Online Collaborative Modeling To Discuss More Adaptive Reservoir Operations, David E. Rosenberg Apr 2024

Lessons From Immersive Online Collaborative Modeling To Discuss More Adaptive Reservoir Operations, David E. Rosenberg

Civil and Environmental Engineering Faculty Publications

This work had the purpose to provoke discussion about more adaptive reservoir operations. This work created online collaborative modeling environments by using web spreadsheets (Google Sheets) during a video conference session. In each session, up to 6 collaborators immersed in water user roles. Then the collaborators consumed, saved, and traded water in response to their available water, other choices, and real-time discussion of choices. The collaboration was an alternative to prior offline or high-performance computing efforts that programmed water allocation rules to try to satisfy forecasted water demands across hydrologic scenarios. The collaboration also differed from prior efforts that excluded …

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Utilizing Hybrid Machine Learning Techniques And Gridded Precipitation Data For Advanced Discharge Simulation In Under-Monitored River Basins, Reza Morovati, Ozgur Kisi Apr 2024

Utilizing Hybrid Machine Learning Techniques And Gridded Precipitation Data For Advanced Discharge Simulation In Under-Monitored River Basins, Reza Morovati, Ozgur Kisi

Civil and Environmental Engineering Faculty Publications

This study addresses the challenge of utilizing incomplete long-term discharge data when using gridded precipitation datasets and data-driven modeling in Iran's Karkheh basin. The Multilayer Perceptron Neural Network (MLPNN), a rainfall-runoff (R-R) model, was applied, leveraging precipitation data from the Asian Precipitation—Highly Resolved Observational Data Integration Toward Evaluation (APHRODITE), Global Precipitation Climatology Center (GPCC), and Climatic Research Unit (CRU). The MLPNN was trained using the Levenberg–Marquardt algorithm and optimized with the Non-dominated Sorting Genetic Algorithm-II (NSGA-II). Input data were pre-processed through principal component analysis (PCA) and singular value decomposition (SVD). This study explored two scenarios: Scenario 1 (S1) used in …

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Water Stress Index And Stomatal Conductance Under Different Irrigation Regimes With Thermal Sensors In Rice Fields On The Northern Coast Of Peru, Lia Ramos-Fernández, Maria Gonzales-Quiquia, José Huanuqueño-Murillo, David Tito-Quispe, Elizabeth Heros-Aguilar, Lisveth Flores Del Pino, Alfonso Torres-Rua Feb 2024

Water Stress Index And Stomatal Conductance Under Different Irrigation Regimes With Thermal Sensors In Rice Fields On The Northern Coast Of Peru, Lia Ramos-Fernández, Maria Gonzales-Quiquia, José Huanuqueño-Murillo, David Tito-Quispe, Elizabeth Heros-Aguilar, Lisveth Flores Del Pino, Alfonso Torres-Rua

Civil and Environmental Engineering Faculty Publications

In the face of the climate change crisis, the increase in air temperature negatively impacts rice crop productivity due to stress from water scarcity. The objective of this study was to determine the rice crop water stress index (CWSI) and stomatal conductance (Gs) under different irrigation regimes, specifically continuous flood irrigation treatments (CF) and irrigations with alternating wetting and drying (AWD) at water levels of 5 cm, 10 cm, and 20 cm below the soil surface (AWD5, AWD10, and AWD20) in an experimental area of INIA-Vista Florida and in six commercial areas of the …

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Reproducibility Starts At The Source: R, Python, And Julia Packages For Retrieving Usgs Hydrologic Data, Timothy O. Hodson, Laura A. Decicco, Jayaram A. Hariharan, Lee F. Stanish, Scott Black, Jeffery S. Horsburgh Dec 2023

Reproducibility Starts At The Source: R, Python, And Julia Packages For Retrieving Usgs Hydrologic Data, Timothy O. Hodson, Laura A. Decicco, Jayaram A. Hariharan, Lee F. Stanish, Scott Black, Jeffery S. Horsburgh

Civil and Environmental Engineering Faculty Publications

Much of modern science takes place in a computational environment, and, increasingly, that environment is programmed using R, Python, or Julia. Furthermore, most scientific data now live on the cloud, so the first step in many workflows is to query a cloud database and load the response into a computational environment for further analysis. Thus, tools that facilitate programmatic data retrieval represent a critical component in reproducible scientific workflows. Earth science is no different in this regard. To fulfill that basic need, we developed R, Python, and Julia packages providing programmatic access to the U.S. Geological Survey’s National Water Information …

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Permeable Concrete Barriers To Control Water Pollution: A Review, Rehab O. Abdel Rahman, Ahmed M. El-Kamash, Yung-Tse Hung Nov 2023

Permeable Concrete Barriers To Control Water Pollution: A Review, Rehab O. Abdel Rahman, Ahmed M. El-Kamash, Yung-Tse Hung

Civil and Environmental Engineering Faculty Publications

Permeable concrete is a class of materials that has long been tested and implemented to control water pollution. Its application in low-impact development practices has proved its efficiency in mitigating some of the impacts of urbanization on the environment, including urban heat islands, attenuation of flashfloods, and reduction of transportation-related noise. Additionally, several research efforts have been directed at the dissemination of these materials for controlling pollution via their use as permeable reactive barriers, as well as their use in the treatment of waste water and water purification. This work is focused on the potential use of these materials as …

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Thermotolerance And Hydrogen Production Potential Of Salt-Tolerant Microflora From Salt Fields, Tsuyoshi Imai, Gede Adi Wiguna Sudiartha, Jantima Teeka, Prapaipid Chairattanamanokorn, Alissara Reungsang, Yung-Tse Hung Sep 2023

Thermotolerance And Hydrogen Production Potential Of Salt-Tolerant Microflora From Salt Fields, Tsuyoshi Imai, Gede Adi Wiguna Sudiartha, Jantima Teeka, Prapaipid Chairattanamanokorn, Alissara Reungsang, Yung-Tse Hung

Civil and Environmental Engineering Faculty Publications

Upper mesophilic temperature acclimation of halophilic, hydrogen-producing bacteria from salt fields was investigated in this study, along with the changes in microbial abundance during anaerobic digestion (AD) process. Genomic approaches such as PCR-denaturing gradient gel electrophoresis (DGGE) and next-generation sequencing (NGS) were performed to profile the microbial communities. During AD, there was a significant abundance of Halanaerobacter lacunarum at 48°C followed by the increase in hydrogen yield, signifying potential contribution from the halophile in the hydrogen production. A decrease in the dominance of H. lacunarum and Halanaerobium fermentans at 42°C, likely due to an increase in other bacterial species, was …

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Antimicrobial Efficacy And Hplc Analysis Of Polyphenolic Compounds In A Whole-Plant Extract Of Eryngium Campestre, Abdulaziz A. Al-Askar, Shimaa Bashir, Abdallah E. Mohamed, Omaima A. Sharaf, Rokaia Nabil, Yiming Su, Ahmed Abdelkhalek, Said I. Behiry Jun 2023

Antimicrobial Efficacy And Hplc Analysis Of Polyphenolic Compounds In A Whole-Plant Extract Of Eryngium Campestre, Abdulaziz A. Al-Askar, Shimaa Bashir, Abdallah E. Mohamed, Omaima A. Sharaf, Rokaia Nabil, Yiming Su, Ahmed Abdelkhalek, Said I. Behiry

Civil and Environmental Engineering Faculty Publications

Due to the constant increase in the number of plant diseases and the lack of available treatments, there has been a growing interest in plant extracts over the past few decades. Numerous studies suggest that plant extract molecules possess valuable antimicrobial activities, particularly against fungi and bacteria. This suggests that these biomaterials could potentially serve as attractive therapeutic options for the treatment of phytopathogen infections. In the present study, we investigated and analyzed the methanolic extract of Eryngium campestre L. whole plant extract using HPLC. The analysis revealed the presence of several polyphenolic constituents, with benzoic acid, catechol, quercetin, vanillic …

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Evaluation Of Temperature-Index And Energy-Balance Snow Models For Hydrological Applications In Operational Water Supply Forecasts, Tian Gan, David G. Tarboton, Tseganeh Z. Gichamo May 2023

Evaluation Of Temperature-Index And Energy-Balance Snow Models For Hydrological Applications In Operational Water Supply Forecasts, Tian Gan, David G. Tarboton, Tseganeh Z. Gichamo

Civil and Environmental Engineering Faculty Publications

In the western United States, snow accumulation, storage, and ablation affect seasonal runoff. Thus, the prediction of snowmelt is essential to improve the reliability of water supply forecasts to guide water allocation and operational decisions. The current method used at the Colorado Basin River Forecast Center (CBRFC) couples the SNOW-17 temperature index snow model and the Sacramento Soil Moisture Accounting (SAC-SMA) runoff model in a lumped approach. Limitations in parameter transferability and calibration requirements for changing conditions with the temperature-index model motivated this research, in which new avenues were investigated to assess and prototype the application of an energy-balance snow …

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Swietenia Mahagoni Leaves Extract: Antifungal, Insecticidal, And Phytochemical Analysis, Wael M. Khamis, Ahmed A. Heflish, Sarah El-Messeiry, Said I. Behiry, Abdulaziz A. Al-Askar, Yiming Su, Ahmed Abdelkhalek, Mohamed K. Gaber May 2023

Swietenia Mahagoni Leaves Extract: Antifungal, Insecticidal, And Phytochemical Analysis, Wael M. Khamis, Ahmed A. Heflish, Sarah El-Messeiry, Said I. Behiry, Abdulaziz A. Al-Askar, Yiming Su, Ahmed Abdelkhalek, Mohamed K. Gaber

Civil and Environmental Engineering Faculty Publications

In this study, we investigated the antifungal properties of an acetone extract derived from the leaves of Swietenia mahagoni (SMAL) against two isolated fungi, Fusarium equiseti (OQ820153) and Rhizoctonia solani (OQ820152), from rice sheath. The extract was effective in inhibiting the growth of both fungi at the highest concentration tested, 3000 μg·mL−1. Laboratory tests on the LC20 of SMAL extract (49.86 mg·L−1) versus pyriproxyfen 10% EC (1.96 mg·L−1) were accomplished on Aphis gossypii Glover. The extract potently reduced the survival of the nymphs (49.58%) more than the other treatments. The longevity of nymphs treated …

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Review: Inelastic Constitutive Modeling: Polycrystalline Materials, Mirza Baig, Josiah Owusu-Danquah, Anne A. Campbell, Stephen F. Duffy Phd, Pe May 2023

Review: Inelastic Constitutive Modeling: Polycrystalline Materials, Mirza Baig, Josiah Owusu-Danquah, Anne A. Campbell, Stephen F. Duffy Phd, Pe

Civil and Environmental Engineering Faculty Publications

This article provides a literature review that details the development of inelastic constitutive modeling as it relates to polycrystalline materials. This review distinguishes between inelastic constitutive models that account for nonlinear behavior at the microstructural level, time-independent classic plasticity models, and time-dependent unified models. Particular emphasis is placed on understanding the underlying theoretical framework for unified viscoplasticity models where creep and classical plasticity behavior are considered the result of applied boundary conditions instead of separable rates representing distinct physical mechanisms. This article establishes a clear understanding of the advantages of the unified approach to improve material modeling. This review also …

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Nematocidal And Bactericidal Activities Of Green Synthesized Silver Nanoparticles Mediated By Ficus Sycomorus Leaf Extract, Dina Elkobrosy, Abdulaziz A. Al-Askar, Hamada El-Gendi, Yiming Su, Rokaia Nabil, Ahmed Abdelkhalek, Said Behiry Apr 2023

Nematocidal And Bactericidal Activities Of Green Synthesized Silver Nanoparticles Mediated By Ficus Sycomorus Leaf Extract, Dina Elkobrosy, Abdulaziz A. Al-Askar, Hamada El-Gendi, Yiming Su, Rokaia Nabil, Ahmed Abdelkhalek, Said Behiry

Civil and Environmental Engineering Faculty Publications

Nanoparticles effectively control most plant pathogens, although research has focused more on their antimicrobial than their nematocidal properties. This study synthesized silver nanoparticles (Ag-NPs) through a green biosynthesis method using an aqueous extract of Ficus sycomorus leaves (FS-Ag-NPs). The nanoparticles were characterized using SEM, TEM, EDX, zeta sizer, and FTIR. The TEM results showed that the synthesized NPs were nanoscale and had an average particle size of 33 ± 1 nm. The elemental silver signal at 3 keV confirmed the formation of Ag-NPs from an aqueous leaf extract of F. sycomorus. The FTIR analysis revealed the existence of several …

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A Comprehensive Study On Non-Proprietary Ultra-High-Performance Concrete Containing Supplementary Cementitious Materials, Seyedsaleh Mousavinezhad, Gregory J. Gonzales, William K. Toledo, Judith M. Garcia, Craig M. Newston, Srinivas Allena Apr 2023

A Comprehensive Study On Non-Proprietary Ultra-High-Performance Concrete Containing Supplementary Cementitious Materials, Seyedsaleh Mousavinezhad, Gregory J. Gonzales, William K. Toledo, Judith M. Garcia, Craig M. Newston, Srinivas Allena

Civil and Environmental Engineering Faculty Publications

Ultra-high performance concrete (UHPC) is a novel cement-based material with exceptional mechanical and durability properties. Silica fume, the primary supplementary cementitious material (SCM) in UHPC, is expensive in North America, so it is often substituted with inexpensive class F fly ash. However, future availability of fly ash is uncertain as the energy industry moves toward renewable energy, which creates an urgent need to find cost-effective and environmentally friendly alternatives to fly ash. This study investigated replacing cement, fly ash, and silica fume in UHPC mixtures with ground granulated blast-furnace slag (GGBFS), metakaolin, and a natural pozzolan (pumicite). To identify acceptable …

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Physicochemical Technique In Municipal Solid Waste (Msw) Landfill Leachate Remediation: A Review, Hamidi Abdul Aziz, Siti Fatihah Ramli, Yung-Tse Hung Mar 2023

Physicochemical Technique In Municipal Solid Waste (Msw) Landfill Leachate Remediation: A Review, Hamidi Abdul Aziz, Siti Fatihah Ramli, Yung-Tse Hung

Civil and Environmental Engineering Faculty Publications

Leachate generation is among the main challenging issues that landfill operators must handle. Leachate is created when decomposed materials and rainwater pass through the waste. Leachate carries many harmful pollutants, with high concentrations of BOD, COD, colour, heavy metals, ammoniacal nitrogen (NH3-N), and other organic and inorganic pollutants. Among them, COD, colour, and NH3-N are difficult to be completely eliminated, especially with a single treatment. They should be handled by appropriate treatment facilities before being safely released into the environment. Leachate remediation varies based on its properties, the costs of operation and capital expenditures, as well as the rules and …

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