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2024

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Articles 31 - 60 of 121

Full-Text Articles in Biochemical and Biomolecular Engineering

Induction Vacuum Swing Adsorption Over Magnetic Sorbent Monoliths And Extrudates For Ethylene/Ethane Separation, Khaled Baamran, Usman Shareef, Fateme Rezaei Jul 2024

Induction Vacuum Swing Adsorption Over Magnetic Sorbent Monoliths And Extrudates For Ethylene/Ethane Separation, Khaled Baamran, Usman Shareef, Fateme Rezaei

Chemical and Biochemical Engineering Faculty Research & Creative Works

Electrification of adsorption processes is emerging as an adaptable solution for future gas separations. This study develops magnetic sorbent structures for use in induction vacuum swing adsorption (IVSA) process specifically designed for olefin/paraffin separation. Two sorbents, namely Fe3O4/ZIF-7 (ethane-selective) and Fe3O4/13X (ethylene-selective) were developed and formulated into extrudates (Fe20/ZIF-7-P) and monoliths (Fe20/13X-M), and tested under different regeneration scenarios, including simultaneous and subsequent induction-evacuation, induction only, and evacuation only. The dynamic adsorption results demonstrated that regeneration under subsequent induction-evacuation improves desorption rate and capability. Under this regeneration scenario, Fe …


Dynamic Metabolic Flux Analysis Amidst Data Variability: Sphingolipid Biosynthesis Case Study In Arabidopsis Thaliana Cell Cultures, Abraham Boluwatife Osinuga Jul 2024

Dynamic Metabolic Flux Analysis Amidst Data Variability: Sphingolipid Biosynthesis Case Study In Arabidopsis Thaliana Cell Cultures, Abraham Boluwatife Osinuga

Department of Chemical and Biomolecular Engineering: Dissertations, Theses, and Student Research

Sphingolipids are pivotal for plant development and stress responses. Growing interest has been directed towards fully comprehending the regulatory mechanisms of the sphingolipid pathway. In this study, we explore its de novo biosynthesis and homeostasis in Arabidopsis thaliana cell cultures, shedding light on fundamental metabolic mechanisms. Employing 15N isotope labeling and quantitative dynamic modeling approach, we obtained data with notable variations and developed a regularized and constraint-based Dynamic Metabolic Flux Analysis (r-DMFA) framework to predict metabolic shifts due to enzymatic changes. Our analysis revealed key enzymes such as sphingoid-base hydroxylase (SBH) and long-chain-base kinase …


Optimizing The Expression Of Polyethylene Terephtalate Hydrolase-Encoding Synthetic Gene In Escherichia Coli Arctic Express (De3), Jocelyn Nataniel, Maria Ulfah, Dini Achnafani, Niknik Nurhayati, Gabriela Christy Sabbathini, Sri Rezeki Wulandari, Abinawanto Abinawanto, Is Helianti Jun 2024

Optimizing The Expression Of Polyethylene Terephtalate Hydrolase-Encoding Synthetic Gene In Escherichia Coli Arctic Express (De3), Jocelyn Nataniel, Maria Ulfah, Dini Achnafani, Niknik Nurhayati, Gabriela Christy Sabbathini, Sri Rezeki Wulandari, Abinawanto Abinawanto, Is Helianti

Makara Journal of Science

The waste of polyethylene terephthalate (PET) plastic waste in Indonesia is a pressing concern due to its slow degradation and potential environmental damage. One promising solution is to utilize polyethylene terephthalate hydrolase from Ideonella sakaiensis (IsPETase), an enzyme that specifically degrades PET. However, inducing the expression of IsPETase synthetic gene in Escherichia coli BL21 (DE3) has been challenging because much of it remains insoluble. This study aimed to express IsPETase in E. coli Arctic Express (DE3) and optimize the conditions to enhance its production. First, pET22b(+)pelB-IsPETase was inserted into E. coli Arctic Express (DE3). The …


Experimental Investigation Of Liquid Holdup In A Co-Current Gas–Liquid Upflow Moving Packed Bed Reactor With Porous Catalyst Using Gamma-Ray Densitometry, Ali Toukan, Ahmed Jasim, Vineet Alexander, Hamza Albazzaz, Muthanna H. Al-Dahhan Jun 2024

Experimental Investigation Of Liquid Holdup In A Co-Current Gas–Liquid Upflow Moving Packed Bed Reactor With Porous Catalyst Using Gamma-Ray Densitometry, Ali Toukan, Ahmed Jasim, Vineet Alexander, Hamza Albazzaz, Muthanna H. Al-Dahhan

Chemical and Biochemical Engineering Faculty Research & Creative Works

This study explores the dynamics of liquid holdup in a lab-scale co-current two-phase up flow moving packed bed reactor, specifically examining how superficial gas velocity influences the line average external liquid holdup at a fixed superficial liquid velocity. Utilizing gamma-ray densitometry (GRD) for precise measurements, this research extends to determining line average internal porosity within catalyst particles. Conducted with an air–water system within a bed packed with 3 mm porous particles, the study presents a novel methodology using Beer–Lambert's law to calculate liquid, gas, and solid holdups and catalyst porosity that is equivalent to the internal liquid holdup that fills …


A New Design Strategy For Sizes Of Polymer Gel Treatments Derived From A Comprehensive Assessment Of Their Case Histories, Munqith Aldhaheri, Abdullah Almansour, Na Zhang, Mingzhen Wei, Baojun Bai Jun 2024

A New Design Strategy For Sizes Of Polymer Gel Treatments Derived From A Comprehensive Assessment Of Their Case Histories, Munqith Aldhaheri, Abdullah Almansour, Na Zhang, Mingzhen Wei, Baojun Bai

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The incentive to revive brownfield oil production extends the interest to apply polymer gel treatments in injection wells. Virtually, volumes of previous remediations implemented in similar reservoir types are used to size new jobs. Such an analogy-Based design procedure imposes a need to evaluate the most frequent designs for each reservoir type based on a comprehensive field survey. This survey provides a new treatment sizing strategy for polyacrylamide-polymer bulk gels by reviewing their field applications in 653 injection wells. the new strategy proposes using the average and most frequent gel volumes per reservoir type as an initial estimate of the …


A New Design Strategy For Sizes Of Polymer Gel Treatments Derived From A Comprehensive Assessment Of Their Case Histories, Munqith Aldhaheri, Abdullah Almansour, Na Zhang, Mingzhen Wei, Baojun Bai Jun 2024

A New Design Strategy For Sizes Of Polymer Gel Treatments Derived From A Comprehensive Assessment Of Their Case Histories, Munqith Aldhaheri, Abdullah Almansour, Na Zhang, Mingzhen Wei, Baojun Bai

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The incentive to revive brownfield oil production extends the interest to apply polymer gel treatments in injection wells. Virtually, volumes of previous remediations implemented in similar reservoir types are used to size new jobs. Such an analogy-based design procedure imposes a need to evaluate the most frequent designs for each reservoir type based on a comprehensive field survey. This survey provides a new treatment sizing strategy for polyacrylamide-polymer bulk gels by reviewing their field applications in 653 injection wells. The new strategy proposes using the average and most frequent gel volumes per reservoir type as an initial estimate of the …


Targeted Drug Delivery: Investigating Protein Corona Behavior, Atharva Markale May 2024

Targeted Drug Delivery: Investigating Protein Corona Behavior, Atharva Markale

Theses

Due to high specificity and less toxicity, nanoparticles have become promising for targeted drug delivery against cancer, although they face challenges when they enter the bloodstream, making their behavior unpredictable. The deposition of proteins on nanoparticles, the protein corona, changes their biosignature, affecting their circulation, drug release potency, targeting ability, and immunogenicity. The continuous exchange of protein layers on a nanoscale is complex to analyze.

Nanoparticle tracking analysis (NTA) is a method to characterize nanoparticles in blood plasma by combining principles of light scattering microscopy and Brownian motion. In this work, time-dependent experiments with plasma were conducted to analyze the …


Kinetic Studies Of Liquid Phase Hydrogenation Of Acetylene For Ethylene Production Using A Selective Solvent Over A Commercial Palladium/Alumina Catalyst, Humayun Shariff, Muthanna H. Al-Dahhan May 2024

Kinetic Studies Of Liquid Phase Hydrogenation Of Acetylene For Ethylene Production Using A Selective Solvent Over A Commercial Palladium/Alumina Catalyst, Humayun Shariff, Muthanna H. Al-Dahhan

Chemical and Biochemical Engineering Faculty Research & Creative Works

The Kinetics of Selective Hydrogenation of Acetylene in the Liquid Phase over a Commercial 0.5 Wt % Pd/Al2O3 Spherical Catalyst Was Investigated in a Stirred-Tank Basket Reactor. the Liquid Phase Was Acetylene Gas Absorbed in a Selective Solvent, N-Methylpyrrolidone (NMP). the Reactor Was Operated at a Pressure Range of 15-250 Psig with Temperature Varying from 60 to 100 °C using Different Catalyst Loadings to Identify the Suitable Operating Conditions. the Kinetic Experiments Were Conducted in the Absence of External Mass Transfer Resistances with the Liquid Phase in Batch Mode and the Gas Phase Being Continuous. the Initial Rates Varied Linearly …


Advancing Simultaneous Extraction And Sequential Single-Particle Icp-Ms Analysis For Metallic Nanoparticle Mixtures In Plant Tissues, Lei Xu, Xingmao Ma, John Yang, Joel G. Burken, Paul Ki-Souk Nam, Honglan Shi, Hu Yang May 2024

Advancing Simultaneous Extraction And Sequential Single-Particle Icp-Ms Analysis For Metallic Nanoparticle Mixtures In Plant Tissues, Lei Xu, Xingmao Ma, John Yang, Joel G. Burken, Paul Ki-Souk Nam, Honglan Shi, Hu Yang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Engineered Nanoparticles (ENPs) Have Been Increasingly Used in Agricultural Operations, leading to an Urgent Need for Robust Methods to Analyze Co-Occurring ENPs in Plant Tissues. in Response, This Study Advanced the Simultaneous Extraction of Coexisting Silver, Cerium Oxide, and Copper Oxide ENPs in Lettuce Shoots and Roots using Macerozyme R-10 and Analyzed Them by Single-Particle Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Additionally, the Standard Stock Suspensions of the ENPs Were Stabilized with Citrate, and the Long-Term Stability (Up to 5 Months) Was Examined for the First Time. the Method Performance Results Displayed Satisfactory Accuracies and Precisions and Achieved Low Particle Concentration …


Development Of Agar-Based Preformed Particle Gel For Water Control In High-Salinity Reservoirs, Ahmed Ben Ali, Reem Elaf, Abdulaziz A. Almakimi, Mohammed Saad, Ibnelwaleed A. Hussein, Baojun Bai May 2024

Development Of Agar-Based Preformed Particle Gel For Water Control In High-Salinity Reservoirs, Ahmed Ben Ali, Reem Elaf, Abdulaziz A. Almakimi, Mohammed Saad, Ibnelwaleed A. Hussein, Baojun Bai

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Oil Extraction Faces Challenges in Cost and Complexity Due to Excessive Water Production, Leading to Diminished Hydrocarbon Recovery. Preformed Particle Gels (PPGs) Hold Promise for Enhancing Oil Recovery and Sealing High-Permeability or Fractured Zones. However, Current PPGs Encounter Limitations in High-Temperature Reservoirs, Including Salt Sensitivity and Potential Hazards. to Address These Issues, We Propose Eco-Friendly PPGs Utilizing Agar Polysaccharides. Agar Backbones Grafted with Acrylamide (AM) and AM/N,N′-Methylenebis(AM) (MBA) Via Microwave-Assisted Techniques Resulted in Polyacrylamide Grafted Agar (Ag/PAM) and Cross-Linked Polyacrylamide Grafted Agar (Ag/PAMBA). Various Sizes (75 Μm to 1.18 Mm) Were Prepared to Accommodate Diverse Reservoir Porosities and Ensure Effective …


Localized Sustained Release Of Copper Enhances Antitumor Effects Of Disulfiram In Head And Neck Cancer, Juan Wang, Boxuan Li, Remy C. Cooper, Da Huang, Hu Yang May 2024

Localized Sustained Release Of Copper Enhances Antitumor Effects Of Disulfiram In Head And Neck Cancer, Juan Wang, Boxuan Li, Remy C. Cooper, Da Huang, Hu Yang

Chemical and Biochemical Engineering Faculty Research & Creative Works

Drug Repurposing Uses Approved Drugs as Candidate Anticancer Therapeutics, Harnesses Previous Research and Development Efforts, and Benefits from Available Clinically Suitable Formulations and Evidence of Patient Tolerability. in This Work, the Drug Used Clinically to Treat Chronic Alcoholism, Disulfiram (DSF), Was Studied for its Antitumor Efficacy in a Copper-Dependent Manner. the Combination of DSF and Copper Could Achieve a Tumor Cell Growth Inhibition Effect Comparable to Those of 5-Fluorouracil and Taxol on Head and Neck Cancer Cells. Both Bulk Dendrimer Hydrogel and Microsized Dendrimer Hydrogel Particles Were Utilized for the Localized Sustained Release of Copper in the Tumor Site. the …


Valorisation Of Water Hyacinth For Different Engineering Applications, Nessren Farrag, Zeinab Elbhnsawi, Omar Aboelazayem May 2024

Valorisation Of Water Hyacinth For Different Engineering Applications, Nessren Farrag, Zeinab Elbhnsawi, Omar Aboelazayem

Chemical Engineering

Nature has many elements that can be beneficial or harmful. One of these elements is water hyacinth (WH) which is an aquatic weed found in water bodies such as rivers and lakes and it has an invasive nature due to its rapid growth rate. On the contrary, water hyacinth, despite its classification as an invasive plant species, possesses a multitude of industrial and engineering applications, demonstrating substantial potential for valorisation into various products. Its versatile attributes and widespread availability render water hyacinth a viable resource for deployment across several sectors, including wastewater treatment, bioenergy generation, bioremediation, and sustainable agriculture. The …


Liquid-Phase Adsorption Of Dimethyl Methylphosphonate On Poly(Ether Imide) And Its Metal Hydroxide-Integrated Composites, Sukanta K. Mondal, Peter O. Aina, Ali A. Rownaghi, Fateme Rezaei May 2024

Liquid-Phase Adsorption Of Dimethyl Methylphosphonate On Poly(Ether Imide) And Its Metal Hydroxide-Integrated Composites, Sukanta K. Mondal, Peter O. Aina, Ali A. Rownaghi, Fateme Rezaei

Chemical and Biochemical Engineering Faculty Research & Creative Works

Understanding the Adsorption Behavior of Dimethyl Methylphosphonate (DMMP), a Key Simulant for Some Nerve Agents, is Crucial for Developing Effective Protective Measures and Ensuring Environmental Safety Against Harmful Chemical Warfare Agents. This Study Systematically Explores the Liquid-Phase Adsorption of DMMP over Branched Poly (Ether Imide) (Ultem) and its Ce (OH)4/Zr (OH)4 Metal Hydroxide Composites. Utilizing UV-Visible (UV-Vis) Spectroscopy, the Adsorption Process Was Monitored over Time to Analyze the Interplay between Various Ultem-Based Composites and DMMP Molecules. Nonreactive Ultem Materials Were Experimentally Identified as Suitable Adsorbents for Liquid-Phase DMMP Capture, Providing a Novel Avenue for Protective Filtration Technologies. It Was Found …


Investigating The Impact Of Secondary Activation Time On The Adsorption Properties Of Activated Biochar For Arsenic Removal From Wastewater, Achyuth Bharadwaj Rayarao May 2024

Investigating The Impact Of Secondary Activation Time On The Adsorption Properties Of Activated Biochar For Arsenic Removal From Wastewater, Achyuth Bharadwaj Rayarao

Graduate Theses and Dissertations (2019 - present)

Biochar, a naturally occurring and renewable carbon material, becomes porous through activation. Activated biochar is an ideal candidate for use as an adsorbent. The objective of this study is to investigate whether activated biochar derived from Colorado soft pine serves as a better adsorbent and demonstrates enhanced adsorption capabilities after undergoing secondary physical activation at various activation times. The effect of secondary action time on physical adsorption properties drawn from the analysis of isotherm plots, surface areas and pore size patterns were examined by using a physisorption analyzer. Chemical structures were identified using both ultimate and proximate analyses, while porosity …


L-Ergothioneine Slows The Progression Of Age-Related Hearing Loss In Cba/Caj Mice, Mark A. Bauer, Parveen Bazard, Alejandro A. Acosta, Nidhi Bangalore, Lina Elessaway, Mark Thivierge, Moksheta Chellani, Xiaoxia Zhu, Bo Ding, Joseph P. Walton, Robert D. Frisina May 2024

L-Ergothioneine Slows The Progression Of Age-Related Hearing Loss In Cba/Caj Mice, Mark A. Bauer, Parveen Bazard, Alejandro A. Acosta, Nidhi Bangalore, Lina Elessaway, Mark Thivierge, Moksheta Chellani, Xiaoxia Zhu, Bo Ding, Joseph P. Walton, Robert D. Frisina

Chemical and Biochemical Engineering Faculty Research & Creative Works

The naturally occurring amino acid, l-ergothioneine (EGT), has immense potential as a therapeutic, having shown promise in the treatment of other disease models, including neurological disorders. EGT is naturally uptake into cells via its specific receptor, OCTN1, to be utilized by cells as an antioxidant and anti-inflammatory. In our current study, EGT was administered over a period of 6 months to 25–26-month-old CBA/CaJ mice as a possible treatment for age-related hearing loss (ARHL), since presbycusis has been linked to higher levels of cochlear oxidative stress, apoptosis, and chronic inflammation. Results from the current study indicate that EGT can prevent aging …


Integrating Galectin-3 Into A Computational Model Of Cardiac Fibrosis Progression, Adam Pieratt May 2024

Integrating Galectin-3 Into A Computational Model Of Cardiac Fibrosis Progression, Adam Pieratt

Chemical Engineering Undergraduate Honors Theses

Cardiac fibrosis, a large contributor to heart failure, is the excessive accumulation of extracellular matrix in response to stress or injury. There are no approved treatments for cardiac fibrosis, and targeting specific species involved creates complex problems for drug development, so a computational model of the cardiac fibroblast signaling network can be used to observe the interactions involved in the progression of cardiac fibrosis. In this paper, a new protein called galectin-3 is integrated into this existing model, and connections are established to expand the coverage of the network. The additions are described, simulated using Netflux biological system simulation software, …


Cooperative And Bifunctional Adsorbent-Catalyst Materials For In-Situ Vocs Capture-Conversion, Sukanta K. Mondal, Peter Aina, Ali A. Rownaghi, Fateme Rezaei May 2024

Cooperative And Bifunctional Adsorbent-Catalyst Materials For In-Situ Vocs Capture-Conversion, Sukanta K. Mondal, Peter Aina, Ali A. Rownaghi, Fateme Rezaei

Chemical and Biochemical Engineering Faculty Research & Creative Works

Volatile Organic Compounds (VOCs) Are Gases that Are Emitted into the Air from Products or Processes and Are Major Components of Air Pollution that Significantly Deteriorate Air Quality and Seriously Affect Human Health. Different Types of Metals, Metal Oxides, Mixed-Metal Oxides, Polymers, Activated Carbons, Zeolites, Metal-Organic Frameworks (MOFs) and Mixed-Matrixed Materials Have Been Developed and Used as Adsorbent or Catalyst for Diversified VOCs Detection, Removal, and Destruction. in This Comprehensive Review, We First Discuss the General Classification of VOCs Removal Materials and Processes and Outline the Historical Development of Bifunctional and Cooperative Adsorbent-Catalyst Materials for the Removal of VOCs from …


Future Of Process Safety: Insights, Approaches, And Potential Developments, Hossein Abedsoltan, Amirhesam Abedsoltan, Zeinab Zoghi May 2024

Future Of Process Safety: Insights, Approaches, And Potential Developments, Hossein Abedsoltan, Amirhesam Abedsoltan, Zeinab Zoghi

Chemical and Biochemical Engineering Faculty Research & Creative Works

This review explores the evolving landscape of process safety, emphasizing the integration of digitalization and advanced technologies. It assesses the role of the industrial Internet of Things, artificial intelligence, and machine learning (ML) in enhancing safety protocols. The paper examines predictive analytics, sensor technology advancements, and digital twins' contributions to safety optimization. It also discusses the future perspectives of risk management approaches, including proactive safety management systems, quantitative risk assessment techniques, and human reliability analysis. This comprehensive analysis provides insights into future developments and challenges in process safety.


Yeast Surface Display Of Multiple Heterologous Proteins Via Molecular And Biochemical Processing Techniques, Shadrach Ibinola May 2024

Yeast Surface Display Of Multiple Heterologous Proteins Via Molecular And Biochemical Processing Techniques, Shadrach Ibinola

Graduate Theses and Dissertations

The arming of yeast cell wall, also known as yeast surface display, is an effective technology for expressing target proteins extracellularly. It has been shown to provide bioengineered yeast with qualities that are not known to native yeast such as the ability to survive harsh conditions including high pH and temperature, for example. Furthermore, this technique has been implemented for various applications which include, protein engineering, bioethanol production, bioremediation, vaccine construction, and antibody development. The major mechanisms of yeast surface display exploit agglutination, flocculation, or proteins with internal repeats as the means by which a target (protein) is covalently attached …


Developing Anisotropic Soft Matter As Functional Materials To Interface With Biological Systems, Homa Ghaiedi May 2024

Developing Anisotropic Soft Matter As Functional Materials To Interface With Biological Systems, Homa Ghaiedi

Graduate Theses and Dissertations

Liquid crystals (LCs) constitute a subset of soft matter possessing hybrid characteristics from both liquid and crystalline phases. In this state, the center of masses remains uncorrelated similar to an isotropic phase, while the long axis of molecules aligns in parallel, resulting in molecules exhibiting orientational and positional order, either individually or concurrently. The directional alignment inherent in LCs arises from the asymmetrical shape and structure of the constituent molecules, causing a spontaneous self-assembly into ordered phases. This cooperative molecular behavior manifests distinctive optical features when subjected to cross polarizers. The remarkable sensitivity of LCs to external stimuli, including temperature, …


Thermogravimetric Analysis And Chemical Kinetics Of Waste Tires, Mahir Mohammed Said Apr 2024

Thermogravimetric Analysis And Chemical Kinetics Of Waste Tires, Mahir Mohammed Said

Tanzania Journal of Engineering and Technology (TJET)

The focus of this paper is to analyse the pyrolysis reaction of waste tires. The pyrolysis was studied experimentally using thermal and chemical kinetics. The tires were pyrolyzed using thermogravimetry at a temperature range of 200 to 600°C, with heating rates of 10, 20, and 50°C/min. The activating energy was observed to increase with increased temperature. The highest activating energy was 101.02 kJ/mol at a heating rate of 50°C/min.


Design And Optimization Of An Azeotropic Distillation Pilot Plant For The Production Of Pure Ethanol, Samwel V. Manyele Apr 2024

Design And Optimization Of An Azeotropic Distillation Pilot Plant For The Production Of Pure Ethanol, Samwel V. Manyele

Tanzania Journal of Engineering and Technology (TJET)

This study aimed to design an azeotropic distillation plant using Aspen Plus® V10 software and determine optimal process conditions for producing pure ethanol greater than 95% from pre-concentrated near-azeotropic ethanol-water solution. The non-random two-liquid Redlich-Kwong thermodynamic model was the base method for property analysis and performance prediction. Modelling and simulation of the converged process were conducted for fixed column variables (R = 5, N = 12 and p = 1 atm). Plant operating parameters were varied in the range of 0 to 1 for the pre-heater vapour fraction, 2 to 10 for the column feed plates (NFP), 2 to 6 …


Enhanced Post Deposition Annealing Conditions On The Fabrication Of High Quality Thermochromic Vanadium Dioxide Films, Nuru R. Mlyuka Apr 2024

Enhanced Post Deposition Annealing Conditions On The Fabrication Of High Quality Thermochromic Vanadium Dioxide Films, Nuru R. Mlyuka

Tanzania Journal of Engineering and Technology (TJET)

Sputter deposition of thermochromic VO2 thin films for smart window applications has been faced with several challenges including the need for high deposition temperature, extremely precise and narrow range of oxygen/argon flow ratio and target poisoning during sputtering. Deposition of VO2 at room temperature without oxygen followed by post-deposition annealing has been cited as one of the potential mitigations to the challenge. In this study, the effects of post-deposition annealing conditions on the structural, electrical and optical properties of VO2 thin films are reported. The films were prepared on soda lime glass substrates using DC magnetron sputtering of metallic vanadium …


Production Of Biofertilizer From Fruit And Garden Waste, Neema Msuya Apr 2024

Production Of Biofertilizer From Fruit And Garden Waste, Neema Msuya

Tanzania Journal of Engineering and Technology (TJET)

The project focused on the production of bio-fertilizer from fruit and garden waste, with a specific emphasis on utilizing pineapple tops in the composting process. The objective was to produce and assess the properties of the bio fertilizer obtained from this process and evaluate its potential application in agriculture. In this study, the composting process was done in a 0.7 m long, 0.85 wide and 1.1 m high vessel, and 0.238 m3 pineapple top wastes, resulting in 0.35 m3 of biofertilizer. The bio fertilizer produced exhibited favorable characteristics, including a moisture content of 36%, pH of 7.1, and a total …


Study Of The Effects Of Thermal Aging Coupled With Shot-Peening Treatment Of Carbonitrided Din 1.6587 Low Alloy Steel On Retained Austenite And Residual Stresses, Richard J. Katemi Apr 2024

Study Of The Effects Of Thermal Aging Coupled With Shot-Peening Treatment Of Carbonitrided Din 1.6587 Low Alloy Steel On Retained Austenite And Residual Stresses, Richard J. Katemi

Tanzania Journal of Engineering and Technology (TJET)

This work investigated the effects of thermal aging and shot-peening of carbonitrided 1.6587 steel grade on retained austenite and residual stresses. After carbonitriding samples contained maximum of 0.87% carbon, 0.34% nitrogen and 50 mass. -% retained austenite. Thermal aging conditions investigated were -30°C, 90°C and 150°C while the aging period were 14, 96 and 720 hours. After thermal aging, some of the samples were subjected to shot-peening treatment using standard cut wire shots StD – G3 - 0.6 mm VDFI 8001 with intensity in the range of 0.25 to 0.30 mmA and coverage of 1.00 to 1.24 x 98%. It …


Assessing Hydrolysis Performance Of Ce(Oh)4@Pim-1 Composites Functionalized With Amidoxime, Aldoxime, And Carboxylate Groups Toward Dimethyl 4-Nitrophenylphosphonate, A Nerve Agent Simulant, Peter O. Aina, Sukanta K. Mondal, Ali A. Rownaghi, Fateme Rezaei Apr 2024

Assessing Hydrolysis Performance Of Ce(Oh)4@Pim-1 Composites Functionalized With Amidoxime, Aldoxime, And Carboxylate Groups Toward Dimethyl 4-Nitrophenylphosphonate, A Nerve Agent Simulant, Peter O. Aina, Sukanta K. Mondal, Ali A. Rownaghi, Fateme Rezaei

Chemical and Biochemical Engineering Faculty Research & Creative Works

In recent years, significant attention has been directed toward evaluating the reactivity of diverse polymers to gauge their catalytic activity against hazardous chemicals. Among these polymers, pim-1 has emerged as an exceptional candidate due to its noteworthy attributes including high surface area, excellent solubility, and the capability to fine-tune the nitrile functional groups along its polymeric backbone. In this study, we explored the impact of different functional groups, such as amidoxime (ax), aldoxime (ox), and carboxylate (cooh), on the degradation of dimethyl 4-nitrophenylphosphonate (dmnp) in comparison to pure pim-1 and their respective ce(oh)4-loaded polymer composites. Remarkably, the pim-1-ax analog exhibited …


Lung Cancer Drug Study Using Alc Nanoparticles, Noah Sparks Apr 2024

Lung Cancer Drug Study Using Alc Nanoparticles, Noah Sparks

Undergraduate Research Conference at Missouri S&T

In a previous project it was determined ALC polarized lipid nanoparticles have a high transfection efficiency in some lung cancer cell lines. Building off this information, these ALC particles will now be tested with an actual lung cancer drug. This process will consist of searching articles for promising lung cancer drugs and selecting one for use. The ALC particles will then undergo a comprehensive drug study using multiple lung cancer cell lines with the selected drug. Aspects such as drug release rate, transfection rate, cytotoxicity, etc. will be determined. The goal is to determine whether ALC nanoparticles show real promise …


Biosensors For Antibacterial Medical Applications, Ryan Fagan, Shelby Wallen Apr 2024

Biosensors For Antibacterial Medical Applications, Ryan Fagan, Shelby Wallen

Undergraduate Research Conference at Missouri S&T

Healthcare associated infections are significant concern in medicine and as antibiotics are becoming less effective, we need new alternative methods to treat them. We are testing various materials that can be used to prevent infections in healthcare settings and in wound treatments. These materials include bioactive glass and modified hydrogel materials. From these studies we've learned these are effective in killing bacteria and preventing infections. The goal of this project is to determine the mechanism at which these materials kill bacteria. Our approach is to construct biosensor strains that can indicate bacterial stress response to antimicrobial agents. We have used …


Ionizable Lipid Nanoparticles Fabrication For Gene Delivery, Noah Sparks, Lei Xu, Hu Yang Apr 2024

Ionizable Lipid Nanoparticles Fabrication For Gene Delivery, Noah Sparks, Lei Xu, Hu Yang

Undergraduate Research Conference at Missouri S&T

In this project ionizable lipids were analyzed for their efficacy in delivery of mRNA in multiple metastatic lung cancer cells. Different ionizable lipids with their molar ratio in making the LNPs were analyzed in order to enhance the nucleic acid delivery to cytoplasm. Phospholipids also play a role in targeting efficacy of the LNPs to the lung cells. Different combination of ionizable lipids with multiple phospholipids were studied for physical characterization and in-vitro transcription efficiency. Transcription efficiency was then quantified using flow cytometry and optimal particles for transcription were noted.


Investigating The Role Of Fluid Shear Stress During Metastasis On Enhanced Breast Cancer Extravasation, Alejandra M. Ham Apr 2024

Investigating The Role Of Fluid Shear Stress During Metastasis On Enhanced Breast Cancer Extravasation, Alejandra M. Ham

LSU Master's Theses

In 2022, ~288,000 American women were diagnosed with metastatic breast cancer which was the leading cause of patient mortality with ~43,000 American women succumbing to the disease. Women can be diagnosed with four different molecular subtypes of breast cancer: luminal A, luminal B, human epithelial growth receptor type 2 enriched (HER2+), and triple-negative breast cancer (TNBC). TNBC accounts for ~12% of all breast cancers, yet it has the worst outcomes. TNBC is highly invasive, with ~46% of TNBC patients developing metastatic disease. A further understanding of metastatic TNBC is needed to provide a greater understanding of how to treat this …