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2024

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Bridging Scales Integrating Satellite Derived With Airborne And Uas-Collected Bathymetry For Coastal And Inland Water Management, Md Salman Bashit Dec 2024

Bridging Scales Integrating Satellite Derived With Airborne And Uas-Collected Bathymetry For Coastal And Inland Water Management, Md Salman Bashit

Theses and Dissertations

This study makes important scientific contributions by improving remote sensing methods for collecting bathymetric data. It demonstrates an improved and novel approach to utilizing Sentinel-2 reflectance data to extract satellite-derived bathymetry (SDB), validated against data from airborne LiDAR bathymetry (ALB). The study looks at how well SDB works in several coastal areas of the United States. It uses the Normalized Difference Turbidity Index (NDTI) and Total Suspended Solids (TSS) to see how water quality affects the accuracy of SDB. The study also analyzes how unoccupied aerial systems (UAS) can be combined with echo sounder systems to derive bathymetric maps with …

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Development And Changes Over Time Of A Granola Bar Formulated With Sweet Potatoes, Meredith Kate Maynard Dec 2024

Development And Changes Over Time Of A Granola Bar Formulated With Sweet Potatoes, Meredith Kate Maynard

Theses and Dissertations

Sweet potatoes are a worldwide staple crop and granola bars are popular with consumers. This study aims to create a granola bar utilizing sweet potatoes and to assess its changes over time. Initial formulations tested minimum and maximum concentration of sweet potato (SP) puree, formulations, cooking type and time/temperature, humectants and preservatives. Bars containing 30 and 45% SP butter were chosen. Changes over time and descriptive sensory evaluation were conducted every 14d for 70d, with four treatments: a control bar and a bar with a preservative, each held at 25°C and 47°C. Water activity and moisture decreased by 0.05 and …

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Invasive Bigheaded Carp Distribution Patterns In Oxbow Lakes Of The Lower Mississippi Alluvial Valley, Michaela Ann Palmieri Dec 2024

Invasive Bigheaded Carp Distribution Patterns In Oxbow Lakes Of The Lower Mississippi Alluvial Valley, Michaela Ann Palmieri

Theses and Dissertations

Large populations of Silver Carp (Hypophthalmichthys molitrix) and Bighead Carp (H. nobilis), collectively called bigheaded carps, may have significant impacts where they are invasive. In the Lower Mississippi Alluvial Valley (LMAV), bigheaded carps have been documented in major rivers; however, knowledge of their distribution in oxbow lakes is lacking. Species distribution models are tools that can be used to estimate species distribution with presence data and environmental variables. As a cost-effective alternative to onsite sampling, I administered a questionnaire to biologists to inventory bigheaded carp presence and obtained environmental data from existing datasets. I used Maximum Entropy (Maxent) to illustrate …

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A Comparison Of Reading Fluency Interventions: Group Repeated Reading And Rapid Read, Michelle Renee Poynter Dec 2024

A Comparison Of Reading Fluency Interventions: Group Repeated Reading And Rapid Read, Michelle Renee Poynter

Theses and Dissertations

Reading fluency is a crucial skill to learn to be successful in school and in life. Research indicates that the most effective and widely used group interventions to increase children’s reading fluency such as repeated reading have been used with minimal to no modifications since their development. Although there are many reading fluency strategies and interventions to select from, few group reading fluency interventions have emerged in the literature with enough evidence to support their use. It is crucial to implement effective and efficient group reading fluency intervention to decrease the time the student spends instructionally behind peers as well …

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Determining The Impact Of Incorporating National Board Standards During Pre-Service Experiences On Teacher Success, Future National Board Certification, Student Growth, And Teacher Retention., Michelle Leigh Stubbs Dec 2024

Determining The Impact Of Incorporating National Board Standards During Pre-Service Experiences On Teacher Success, Future National Board Certification, Student Growth, And Teacher Retention., Michelle Leigh Stubbs

Theses and Dissertations

This project addresses the critical issue of teacher attrition and retention by incorporating National Board standards into pre-service teacher preparation programs. Nationwide, school districts face significant shortages of qualified teachers, particularly in mathematics, science, and special education. Research reveals that the Southern region of the United States experiences the highest attrition rates (Ingersoll et al., 2018). An analysis of data indicates that the key issues contributing to teacher attrition and retention include stress from high-stakes testing, salary deficits, and inconsistent support. States have the autonomy to address teacher retention issues and allocate federal funds for these initiatives such as high-quality …

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Physics-Based And Data-Driven Constitutive Modeling Of Unsaturated Soils Under Multi-Physics Loading Conditions, Mohsen Ajdari Dec 2024

Physics-Based And Data-Driven Constitutive Modeling Of Unsaturated Soils Under Multi-Physics Loading Conditions, Mohsen Ajdari

Theses and Dissertations

Understanding the behavior of unsaturated soils under multi-physics loading is crucial for addressing several challenges related to emerging geo-energy technologies, climate change, and geohazard mitigation. The main objective of this research is to enhance the state of the art for modeling unsaturated soils under multi-physics loading conditions through physics-based and data-driven approaches. Toward this objective, this dissertation is divided into two distinct yet interrelated parts. In the first part (Chapters 2, 3, and 4), thermodynamic principles are employed to develop new constitutive functions to describe soil suction and stress-dilatancy of unsaturated soils under temperature-dependent conditions. Building upon the insights gained …

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Numerical Predictions Of Turbulent Heat Transfer In Liquid Metal Flows, Mohammed Elmellouki Dec 2024

Numerical Predictions Of Turbulent Heat Transfer In Liquid Metal Flows, Mohammed Elmellouki

Theses and Dissertations

Fast breeder nuclear reactors use liquid metals such as Sodium (Na), Sodium-Potassium (Na-K), and Lead (Pb) as coolants since these liquids have high thermal conductivity, high thermal diffusivity, and lower heat capacity compared to water and air, thus involving low Prandtl numbers (Pr). However, liquid metals solidify at room temperature which poses challenges for experimental studies, making computational fluid dynamics (CFD) is considered a valuable analysis and design tool. Furthermore, the accurate modeling of turbulent heat transfer in low Pr flows remains one of the main challenges due to the gap between momentum and turbulent thermal diffusion. The study aims …

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Reclaiming The Journey: A Phenomenological Study Of Black Lactation Professionals, Deandra Monet Kees Dec 2024

Reclaiming The Journey: A Phenomenological Study Of Black Lactation Professionals, Deandra Monet Kees

Theses and Dissertations

This study examined Black lactation professionals’ lived experiences navigating the human lactation workforce. Grounded in hermeneutic phenomenology and guided by Black feminist thought and critical race theory, this research unveiled the impact of various barriers that play a role in human lactation. While evidence cites the importance of human milk feeding, the voices of Black lactation professionals are often overlooked and marginalized, resulting in limited representation of Black lactation training practices. This study aimed to address a critical gap in the literature by centering the voices of Black lactation professionals. This research was conducted utilizing semi-structured interviews and a focus …

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Multi-Cloud Identity Security Utilizing Self-Sovereign Identity, Morgan Lee Reece Dec 2024

Multi-Cloud Identity Security Utilizing Self-Sovereign Identity, Morgan Lee Reece

Theses and Dissertations

With the increasing use of multi-cloud environments, security professionals face challenges in configuration, management, and integration due to uneven security capabilities and features among providers. As a result, a fragmented approach toward security has been observed, leading to new attack vectors and potential vulnerabilities. Other research has focused on single-cloud platforms or specific applications of multi-cloud environments. Therefore, there is a need for a holistic security and vulnerability assessment and defense strategy that applies to multi-cloud platforms. This dissertation explores risk and vulnerability analysis to identify attack vectors from software, hardware, and the network, as well as interoperability security issues …

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Examining Special Education Programming Through The Lens Of Upper Elementary And High School General Education Teachers In Select Black Rural Schools In Mississippi - Do They Feel Prepared To Serve?, Natasha Michelle Porter Dec 2024

Examining Special Education Programming Through The Lens Of Upper Elementary And High School General Education Teachers In Select Black Rural Schools In Mississippi - Do They Feel Prepared To Serve?, Natasha Michelle Porter

Theses and Dissertations

The present study investigated the perceptions of upper elementary and high school general education teachers towards special education programming and whether they felt prepared to meet the needs of students with Individualized Education Plans. The literature review provided a comprehensive synthesis of existing research on the topic researched, offering an in-depth exploration of key themes, trends, and findings in the relevant academic literature. It critically examined assorted studies, theories, and methodologies researchers employ, identifying gaps and areas of consensus. The purpose of this study was to build from the foundation set by existing bodies of related literature, to gain formal …

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Evaluation Of Soybean (Glycine Max L.) Seed Inoculation With Bradyrhizobium Japonicum And Bacillus Subtilis On Yield And Root System Architecture: A Herbicide Carryover Perspective, Ncomiwe Andile Maphalala Dec 2024

Evaluation Of Soybean (Glycine Max L.) Seed Inoculation With Bradyrhizobium Japonicum And Bacillus Subtilis On Yield And Root System Architecture: A Herbicide Carryover Perspective, Ncomiwe Andile Maphalala

Theses and Dissertations

Reducing herbicide carryover in soybean production is imperative to sustain future soybean cropping systems in Mississippi and the rest of the world. This research was conducted to determine the response of inoculated soybean to corn (Zea mays L.) residual herbicides. The herbicide treatments included aatrex (atrazine), callisto (mesotrione), lexar (atrazine+mesotrione+s-metolachlor), and steadfast (nicosulfuron+rimsulfuron) at 100%, 75%, 50%, and 25% of the total label rate. Inoculant treatments were Bradyrhizobium japonicum, Bacillus subtilis, and no inoculant. Bacterial inoculants positively impacted most shoot and root growth parameters, significantly increasing depending on the herbicide x inoculant treatment combination and its rate. B.japonicum alone and …

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Impact Of Cascading Optical Processes On Spectroscopic Quantification Of Absorption And Scattering Properties Of Samples, Pathum Dilshan De Silva Wathudura Dec 2024

Impact Of Cascading Optical Processes On Spectroscopic Quantification Of Absorption And Scattering Properties Of Samples, Pathum Dilshan De Silva Wathudura

Theses and Dissertations

Light absorption and scattering are fundamental properties of matter, particularly significant in nanoscale materials. This study explores how cascading optical processes affect the experimental measurement of absorption and scattering intensities, along with scattering depolarization, in samples containing absorbers and scatterers. The experimental UV–vis spectrum results from the combination of absorption and scattering extinction spectra. However, the maximum measurable extinction may be limited by forward scattered light. Light absorption decreases the intensity of scattered light and influences scattering depolarization. While scattering can reduce absorption along the optical path to the detector, sufficient absorption of the scattered light may counterbalance this effect, …

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Beyond The Classroom: Leveraging P-12 Education Brand Equity To Cultivate Community Capitals And Drive Economic Growth In Rural Mississippi, Patrick Braden Miller Dec 2024

Beyond The Classroom: Leveraging P-12 Education Brand Equity To Cultivate Community Capitals And Drive Economic Growth In Rural Mississippi, Patrick Braden Miller

Theses and Dissertations

This dissertation explores the relationship between education brand equity and community-economic development in rural Mississippi as a result of a consumer-oriented approach to education and manifested through the modern school choice movement. A survey of public school superintendents (n=28) found a statistically positive correlation, suggesting that a strong school brand leads to increased community-economic development. The Community Capitals Framework suggests this connection is due to interconnected capitals like human and social capital but helps other capitals rise as well. Additionally, superintendents overwhelmingly agreed collaboration between education and community-economic development is essential. The research also examined perceptions of school choice. Superintendents’responses …

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Comparative Analysis Of Conventional And Non-Conventional Current Transformers: Advancements, Applications, And Implications For Modern Power Systems, Phalguni Morla Dec 2024

Comparative Analysis Of Conventional And Non-Conventional Current Transformers: Advancements, Applications, And Implications For Modern Power Systems, Phalguni Morla

Theses and Dissertations

This thesis, titled "Comparative Analysis of Conventional and Non-Conventional Current Transformers: Advancements, Applications, and Implications for Modern Power Systems," examines the performance and challenges of conventional and non-conventional current transformers (CTs). Conventional CTs, while reliable in traditional power systems, face issues like core saturation, mechanical stress, and environmental limitations, making them less suited for modern, dynamic systems. Non-conventional CTs, such as optical and Rogowski coil-based transformers, offer higher accuracy and better adaptability, especially in digital applications like smart grids. Through experiments, the study compares the thermal performance, accuracy, and load-handling abilities of both CT types. Results show that while conventional …

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Serving Students With Specific Learning Disabilities: Identifying Prevalent Eligibility Practices In Mississippi, Phyllis Marie Yucatonis Dec 2024

Serving Students With Specific Learning Disabilities: Identifying Prevalent Eligibility Practices In Mississippi, Phyllis Marie Yucatonis

Theses and Dissertations

This study investigated the determination eligibility practices for Specific Learning Disabilities (SLD) within Mississippi school districts, framed by the Individuals with Disabilities Education Act 2004 (IDEA) and Mississippi Department of Education (MDE) guidelines. A survey of 139 educational professionals in Mississippi offered insights into the methods preferred for determining SLD eligibility and the decision-making factors at the district level. The study examined commonly used methods for determining SLD, the challenges faced during the process, the need for professional development, the impact of educator demographics on SLD determination eligibility and general satisfaction with the SLD eligibility determination process. It also explored …

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Evaluation Of The Physical And Mechanical Properties Of Hardwoods And Softwood Cross Laminated Timber, Richard Olakunle Omotayo Dec 2024

Evaluation Of The Physical And Mechanical Properties Of Hardwoods And Softwood Cross Laminated Timber, Richard Olakunle Omotayo

Theses and Dissertations

This thesis is focused on the evaluation of cross laminated timber made from southern pine lumber and low-grade hardwood species (which included red oak, sweetgum, and yellow poplar) growing in the southeastern part of the United States. The properties of interest were density, modulus of elasticity (MOE), modulus of rupture (MOR) and dynamic modulus of elasticity (dMOE). Mechanical testing using static bending technique was used to determine MOE and MOR and non-destructive technique (NDT) was used to predict dMOE. The results from mechanical testing showed that over 98% of low-grade hardwood CLT samples exceeded 8300 MPa. This proved the suitability …

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Investigations Of Guayule Resin As A Wood Protectant, Queen Aguma Dec 2024

Investigations Of Guayule Resin As A Wood Protectant, Queen Aguma

Theses and Dissertations

Wood products are subject to deterioration by numerous processes, as a biological material. Today, a significant area of preservative development is the utilization of existing plant residues that have water-repelling, antibacterial, antifungal, and insecticidal properties as components of wood protectants. Parthenium argentatum, known as guayule (wy-oo-lee), is a promising wood protectant due to its resin. However, the resin's complicated chemical, physical, and solvent-resistant properties make it difficult to use. The primary goal of this study was to eliminate the use of any solvent and rely on thermal modification only to fractionate usable compounds from guayule resin. Utilizing heated dialysis and …

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Deep Learning - Based Automated Detection And Classification Of Foreign Materials In Poultry Using Color And Hyperspectral Imaging, Rohini Maram Dec 2024

Deep Learning - Based Automated Detection And Classification Of Foreign Materials In Poultry Using Color And Hyperspectral Imaging, Rohini Maram

Theses and Dissertations

This thesis explores the use of Deep learning for detection and classification of small foreign materials (FMs) in poultry meat using color and hyperspectral imagery (HSI). The study employs You only look once (YOLO) object detection models on color images for precise localization, and one-dimensional convolutional neural network (1D CNN), two-dimensional convolutional neural network (2D CNN) was used on HSI (600 – 1700 nm) for classification. Twelve different FMs commonly known as polymers including PVC, PET, LDPE and HDPE, were examined using 52 color and 52 hyperspectral images. Four YOLO models (v5x, v7x, v8x, v10x) were implemented, trained, tested and …

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Survival Analysis In The Presence Of Independent Or Dependent Censoring, Sakie Jaladha Arachchige Dec 2024

Survival Analysis In The Presence Of Independent Or Dependent Censoring, Sakie Jaladha Arachchige

Theses and Dissertations

This dissertation has three parts. The first part proposes a two-stage estimation procedure for a copula-based model with semi-competing risks data, where the nonterminal event is subject to dependent censoring by the terminal event. Under a copula-based model, the marginal survival functions of individual event times are specified by semiparametric transformation models, and a parametric copula function specifies the between-event dependence. The parameters associated with the marginal of the terminal event are first estimated, and the marginal parameters for the non-terminal event time and the copula parameter are second estimated via maximizing a pseudo-likelihood function based on the joint distribution …

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Innovative Methyl Bromide Alternatives: Efficacy Of Acetic Acid Coated Ham Nets And Carboxymethyl Cellulose Films In Inhibiting Mite Infestations On Dry-Cured Ham, Sawyer Wyatt Smith Dec 2024

Innovative Methyl Bromide Alternatives: Efficacy Of Acetic Acid Coated Ham Nets And Carboxymethyl Cellulose Films In Inhibiting Mite Infestations On Dry-Cured Ham, Sawyer Wyatt Smith

Theses and Dissertations

Dry-cured hams may become infested with Tyrophagus putrescentiae (ham mites) during the aging process. Traditionally, methyl bromide (MB) fumigation has been used to control these infestations, but its phase-out due to environmental concerns has prompted the need for alternative methods. This study evaluated the effectiveness of acetic acid-coated ham nets and carboxymethyl cellulose (CMC)-based edible films with propylene glycol (PG) in mitigating mite infestations. Laboratory trials assessed the impact of these treatments on mite orientation, reproduction, infestation rates, and sensory quality. Results indicate that CMC films were effective at controlling mite growth and reproduction with minimal sensory impact. In contrast, …

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Habitat Suitability Modeling For Optimizing Stand Initiation And Restoration Efforts Of Economically And Ecologically Important Hardwoods, Segun Michael Adeyemo Dec 2024

Habitat Suitability Modeling For Optimizing Stand Initiation And Restoration Efforts Of Economically And Ecologically Important Hardwoods, Segun Michael Adeyemo

Theses and Dissertations

This dissertation addresses critical challenges in forest management and restoration in the Lower Mississippi Alluvial Valley (LMAV) through a series of interconnected studies focused on improving habitat suitability modeling and growth prediction for oak species. The research employs advanced modeling techniques to enhance our understanding of species-habitat relationships and forest dynamics in the context of climate change. Initial studies focused on developing ensemble habitat suitability models for American chestnut (Castanea dentata) and butternut (Juglans cinerea), two historically important but currently threatened tree species. These models predict suitable habitats and potential range shifts under various climate change scenarios, highlighting the species' …

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Evaluation And Characterization Of Two Capacitive Sensors For Cotton Moisture Measurement In Static And Dynamic Modes For Real-Time Use In Cotton Gin, Sushma Perati Dec 2024

Evaluation And Characterization Of Two Capacitive Sensors For Cotton Moisture Measurement In Static And Dynamic Modes For Real-Time Use In Cotton Gin, Sushma Perati

Theses and Dissertations

Two capacitive sensors, a commercial FP-32C and a custom design capacitor plate were evaluated for real-time cotton moisture content (MC%) measurement in ginning environment. The sensors were able to measure MC ranges of 3.56%–19.7% and 4.56%–21.04% MC for FP-32C and custom capacitor pate, respectively. In dynamic mode, the ranges were 4.9%–14.5% and 4.9%–14.7% respectively. Results showed that measurements of both sensors had strong correlations with results obtained from oven method. A comparison of moisture content measurement methods using a moisture balance (M5 Thermo 163M,) and oven method was conducted with the result showing that Lint-Only samples were the most closely …

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The Legal Environment Associated With Disputes From Conservation Easements On Private Property In The United States Of America, Thera J. Mullen Dec 2024

The Legal Environment Associated With Disputes From Conservation Easements On Private Property In The United States Of America, Thera J. Mullen

Theses and Dissertations

Conservation of natural resources on private land helps protect property against increasing civilization needs. Integrating conservation with property rights is necessary to understand conservation easements' implications as legally binding agreements. Conservation easements, used by different agencies, allow the land to remain privately owned while protecting natural conservation qualities. The legal aspects involve both creating the contract and enforcing it. Litigation becomes involved when the parties of the easement start to have disagreements. Little literature is currently present on this topic, so this study analyzed and summarized legal disputes related to conservation easements being implemented on private property. Some potential implications …

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Improved Vector Pruning For Partially Observable Markov Decision Processes, Thomas Jonathan Bowman Dec 2024

Improved Vector Pruning For Partially Observable Markov Decision Processes, Thomas Jonathan Bowman

Theses and Dissertations

Exact dynamic programming algorithms for planning problems that are represented as partially observable Markov decision processes rely on a subroutine that removes, or ``prunes", dominated vectors from sets of vectors that represent piecewise-linear and convex value functions. The classic vector pruning subroutine solves one linear program per vector, where the number of variables is equal to the size of the state space and the number of constraints is equal to the number of vectors shown so far to be undominated. Thus, its scalability is limited not only by the number of linear programs it solves, but especially by their size. …

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Investigation Of Coupled Fluid-Structure Interactions In Supersonic Flows, Seshendra Palakurthy Dec 2024

Investigation Of Coupled Fluid-Structure Interactions In Supersonic Flows, Seshendra Palakurthy

Theses and Dissertations

The skin panels used in high-speed flights are exposed to various types of loads, such as inertial, elastic, and aerodynamic loads. In addition, oblique shock impingement can cause flow separation and unsteady aerodynamic loading, which can reduce vehicle performance and result in acoustic noise and viscous heating. These loads, when combined, can result in a complex dynamic response, such as flutter. Flutter is characterized by sustained unsteadiness or structural vibrations. Although flutter might not be immediately harmful, it can lead to fatigue failure of the structural components. A vast amount of literature already exists on the panel flutter induced by …

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Review Of Inverter Functionality Requirements In Ieee 1547 For Voltage Fault Ride-Through, Tyler Coby Jonathan May Dec 2024

Review Of Inverter Functionality Requirements In Ieee 1547 For Voltage Fault Ride-Through, Tyler Coby Jonathan May

Theses and Dissertations

The introduction of Distributed Energy Resources such as energy storage systems, solar, and wind create system dynamics which modern electric grids cannot reliably handle in such large quantities without properly coordinated protections. One such tool is the concept of Fault Ride Through, which allows a system to continue operation during a long-term minor or short-term major disturbance. Standards are in place to control and monitor the operation and recovery of this capability but are meant to be minimum or maximum requirements. Since these standards must be used nationally, or sometimes internationally, they tend to be left very flexible. The rise …

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Butte Priority Soils Operable Unit (Bpsou) Final Bpsou Insufficiently Reclaimed Sites Belle Of Butte (Bres No. 8 & Ur-39) Remedial Action Work Plan (Rawp) Request For Change Ir- 2024-Ra-01, Revision 1, Mike Mcanulty Dec 2024

Butte Priority Soils Operable Unit (Bpsou) Final Bpsou Insufficiently Reclaimed Sites Belle Of Butte (Bres No. 8 & Ur-39) Remedial Action Work Plan (Rawp) Request For Change Ir- 2024-Ra-01, Revision 1, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Subcutaneous Electroencephalography Monitoring For People With Epilepsy And Intellectual Disability: Co-Production Workshops, Rohit Shankar Dec 2024

Subcutaneous Electroencephalography Monitoring For People With Epilepsy And Intellectual Disability: Co-Production Workshops, Rohit Shankar

Peninsula Medical School

Background Nearly 25% of people with intellectual disability (PwID) have epilepsy compared to 1% of the UK general population. PwID are commonly excluded from research, eventually affecting their care. Understanding seizures in PwID is particularly challenging because of reliance on subjective external observation and poor objective validation. Remote electroencephalography (EEG) monitoring could capture objective data, but particular challenges and implementation strategies for this population need to be understood. Aim This co-production aimed to explore the accessibility and potential impact of a remote, long-term EEG tool (UnEEG 24/7 SubQ) for PwID and epilepsy. Method We conducted six, 2-hour long workshops; three …

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Identification Of Salt Tolerance And Stress Response In Us Department Of Agriculture Tomato Germplasm At The Seedling Stage, Ibtisam Alatawi, Haizheng Xiong, Kenani Chiwina, Hanan Mohammedsaeed Alkabkabi, Qun Luo, Neelendra K. Joshi, Xiaolun Sun, Xuan Zhuang, Kai-Shu Ling, Ainong Shi Dec 2024

Identification Of Salt Tolerance And Stress Response In Us Department Of Agriculture Tomato Germplasm At The Seedling Stage, Ibtisam Alatawi, Haizheng Xiong, Kenani Chiwina, Hanan Mohammedsaeed Alkabkabi, Qun Luo, Neelendra K. Joshi, Xiaolun Sun, Xuan Zhuang, Kai-Shu Ling, Ainong Shi

Horticulture Faculty Publications and Presentations

Abstract. Soil salinity is a significant abiotic factor that impedes sustainable crop pro- duction in key agricultural regions worldwide. Saline cultivation adversely affects soil quality, whereas the use of saline water for irrigation disrupts the physiological and biochemical processes of plants. Continuous irrigation with high salt concentrations leads to a gradual buildup of soil salinity, thus hindering optimal plant growth and development. Consequently, there is a growing emphasis on breeding salinity-tolerant cultivars of various crops. In this study, 71 tomato accessions sourced from 20 coun- tries and provided by the US Department of Agriculture were evaluated under con- trolled greenhouse …

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Study The Effects Of Temperature On Laser Cladding Process With Two Different Geometries Using Comsol Multiphysics, Luban Hamdy Hameed Al-Qudsy Dec 2024

Study The Effects Of Temperature On Laser Cladding Process With Two Different Geometries Using Comsol Multiphysics, Luban Hamdy Hameed Al-Qudsy

AUIQ Technical Engineering Science

Due to the advancement of laser material processing and the high-demand of high-quality processing, COMSOL Multiphyiscs emerges as a powerful solution to the problem, offering multiple simulation in virtual environment with both 2D and 3D geometries. In this work, we aim to study the effects of thermal properties on the laser cladding using both 2D and 3D geometries with Nickle and Copper as promising candidates for rapid processing of materials. The work was done on a personal computer using commercially-available package of COMSOL Multiphysics 5.0. Results shows a notable increment of heat affected zone when the laser power increased. Additionally, …

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