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Purification Of I-129 From Spent Pwr Fuel, Sydney B. Whitaker, Kaitlyn Pierson, Kaylie Richard, Samantha Cahill 2021 University of Tennessee, Knoxville

Purification Of I-129 From Spent Pwr Fuel, Sydney B. Whitaker, Kaitlyn Pierson, Kaylie Richard, Samantha Cahill

Chancellor’s Honors Program Projects

No abstract provided.


Antibody-Drug Nanoparticle Induces Synergistic Treatment Efficacies In Her2 Positive Breast Cancer Cells, Muhammad Raisul Abedin, Kaitlyne Powers, Rachel Aiardo, Dibbya Barua, Sutapa Barua 2021 Missouri University of Science and Technology

Antibody-Drug Nanoparticle Induces Synergistic Treatment Efficacies In Her2 Positive Breast Cancer Cells, Muhammad Raisul Abedin, Kaitlyne Powers, Rachel Aiardo, Dibbya Barua, Sutapa Barua

Chemical and Biochemical Engineering Faculty Research & Creative Works

Chemotherapeutic drugs suffer from non-specific binding, undesired toxicity, and poor blood circulation which contribute to poor therapeutic efficacy. In this study, antibody–drug nanoparticles (ADNs) are engineered by synthesizing pure anti-cancer drug nanorods (NRs) in the core of nanoparticles with a therapeutic monoclonal antibody, Trastuzumab on the surface of NRs for specific targeting and synergistic treatments of human epidermal growth factor receptor 2 (HER2) positive breast cancer cells. ADNs were designed by first synthesizing ~ 95 nm diameter × ~ 500 nm long paclitaxel (PTX) NRs using the nanoprecipitation method. The surface of PTXNRs was functionalized at 2′ OH nucleophilic site using carbonyldiimidazole ...


Study Level Recovery Processes Of Thorium And Several Rare Earth Elements From Monazite Ore, Makayla Hyde, Jaclyn Choate 2021 University of Tennessee, Knoxville

Study Level Recovery Processes Of Thorium And Several Rare Earth Elements From Monazite Ore, Makayla Hyde, Jaclyn Choate

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Monazite ore is composed of several minerals including several rare earth element (REE) and thorium phosphates. Many past research projects have looked at the extraction of REE from monazite ore but have discarded the thorium phosphate compound as waste. Since thorium could be a possible fuel for state-of-the-art future nuclear reactors, this research focuses on a way to recover thorium from the monazite ore. The overall purpose of this research is to develop a conceptual recovery process that recovers thorium dioxide from monazite ore. In some parts of the world where uranium sources are limited; then, thorium could be used ...


Atomically Thin Nanoporous Graphene Membranes For Fluid Separation, Anika O. K. Wong 2021 The University of Western Ontario

Atomically Thin Nanoporous Graphene Membranes For Fluid Separation, Anika O. K. Wong

Electronic Thesis and Dissertation Repository

Membrane separation applications such as water desalination and carbon capture require high permeance and selectivity. For such processes, nanoporous graphene membranes promise 100-fold higher permeance at comparable selectivity to conventional polymer membranes, but remain under development. This thesis reports fluid permeance through both simulated and experimental graphene nanopores. Molecular dynamics simulations were performed to investigate liquid advection-diffusion through graphene nanopores and how the transport rates differ from continuum predictions. Furthermore, a technique for measuring the gas permeance of nanoscopic areas of graphene was developed. Here, a single layer of graphene seals a ~10 nm diameter hole in a multi-layer graphene ...


Co2 Derived Carbon Capture Using Microalgae In A Photobiocrec Unit, Maureen D. Cordoba Perez 2021 The University of Western Ontario

Co2 Derived Carbon Capture Using Microalgae In A Photobiocrec Unit, Maureen D. Cordoba Perez

Electronic Thesis and Dissertation Repository

Microalgae has the potential to contribute to carbon dioxide capture, resulting in the production of alternative fuels and valuable chemical products. To accomplish this, high-efficiency photobioreactors must be conceptualized, designed, and established, in order to achieve high inorganic carbon conversion, superior light utilization, and unique fluid dynamics.

In this PhD Dissertation, experiments with Chlorella vulgaris were carried out, in a 0.175L especially designed PhotoBioCREC unit, under controlled radiation and high mixing conditions. This unique design involves 1 mm-2 mm alumina particles, which keep photoreactor walls always clean, without compromising photon transmittance. Sodium bicarbonate (NaHCO3) was supplied as the ...


Biocompatible In Situ Gelling Hydrogel Formulations For Intra-Articular Drug Delivery, Charlotte E. Thomsen 2021 Western University

Biocompatible In Situ Gelling Hydrogel Formulations For Intra-Articular Drug Delivery, Charlotte E. Thomsen

Undergraduate Student Research Internships Conference

No abstract provided.


Experimental Study And Characterization Of Bubble Behaviors In The Orifice-Induced Hydrodynamic Cavitation, Haoxuan Zheng 2021 The University of Western Ontario

Experimental Study And Characterization Of Bubble Behaviors In The Orifice-Induced Hydrodynamic Cavitation, Haoxuan Zheng

Electronic Thesis and Dissertation Repository

Experimental studies were performed to characterize the development process of orifice-induced cavitation and transitional bubble behaviors. The transition from non-cavitation to fully developed cavitation was carefully studied. Cavitation bubble clouds were observed at orifice, indicating the inception of cavitation. The number of bubbles produced were dramatically increased while the averaged sizes of bubble reduced when cavitation was initiated. Both orifice opening ratio and perimeter can affect the cavitation developing process. A long orifice perimeter promotes the production of fine bubbles. The orifice plates with the smallest opening ratio generated a desired gas-liquid interfacial area at the lowest required pressure. An ...


Non-Innocent Role Of The Ceria Support In Pd-Catalyzed Halophenol Hydrodehalogenation, Pranjali J. Naik, Yeongseo An, Sergey L. Sedinkin, Hayley Masching, Daniel Freppon, Emily A. Smith, Vincenzo Venditti, Igor I. Slowing 2021 Ames Laboratory

Non-Innocent Role Of The Ceria Support In Pd-Catalyzed Halophenol Hydrodehalogenation, Pranjali J. Naik, Yeongseo An, Sergey L. Sedinkin, Hayley Masching, Daniel Freppon, Emily A. Smith, Vincenzo Venditti, Igor I. Slowing

Chemistry Publications

The hydrodehalogenation (HDH) of halophenols is efficiently catalyzed by palladium supported on high-surface ceria (Pd/CeO2) under mild conditions (35 °C, 1 atm H2). A combination of NMR, diffuse reflectance infrared Fourier transform spectroscopy, Raman spectroscopy, and XPS studies and HDH kinetics of substituted halobenzenes suggests that the reaction proceeds mainly via a sequence of dissociative adsorption of phenolic hydroxyl onto the support, oxidative addition of the C–halogen bond to Pd, and reductive elimination to give phenol and hydrogen halide. The dissociative adsorption of the −OH group onto oxygen vacancies of the ceria support results in an electron-rich intermediate ...


Hydrogen Production Via Photocatalytic Water Splitting Under Near-Uv And Visible Light Using Doped Pd Tio2, Bianca Rusinque 2021 The University of Western Ontario

Hydrogen Production Via Photocatalytic Water Splitting Under Near-Uv And Visible Light Using Doped Pd Tio2, Bianca Rusinque

Electronic Thesis and Dissertation Repository

The present PhD thesis reports the modification of titanium dioxide (TiO2) with palladium (Pd), to enhance hydrogen production via water splitting, using 2.0v/v% ethanol as a scavenger. Titanium dioxide was used as photocatalyst, given its ability to absorb photons, producing e-/h+ pairs. Mesoporous TiO2 was synthesized using a soft template, following the sol-gel method, to modify its morphological properties. Palladium was used as co-catalyst doping TiO2 agent, narrowing the band gaps down to 2.51 eV, and creating additional active metal sites.

Water splitting experiments under near-UV and visible light irradiation were carried out ...


Analysis Of The Amorphous And Interphase Influence Of Comononomer Loading On Polymer Properties Toward Forwarding Bioadvantaged Copolyamides, Sanaz Abdolmohammadi, Dustin C. Gansebom, Shailja Goyal, Ting-Han Lee, Baker Kuehl, Michael J. Forrester, Fang-Yi Lin, Nacú Hernández, Brent H. Shanks, Jean-Philippe Tessonnier, Eric W. Cochran 2021 Iowa State University

Analysis Of The Amorphous And Interphase Influence Of Comononomer Loading On Polymer Properties Toward Forwarding Bioadvantaged Copolyamides, Sanaz Abdolmohammadi, Dustin C. Gansebom, Shailja Goyal, Ting-Han Lee, Baker Kuehl, Michael J. Forrester, Fang-Yi Lin, Nacú Hernández, Brent H. Shanks, Jean-Philippe Tessonnier, Eric W. Cochran

Chemical and Biological Engineering Publications

Here we present an approach for selectively modifying the properties of semicrystalline polymers by introducing ″bioadvantaged″ counits. With this approach, the unique functionality of biomass can be leveraged to tailor the properties of the amorphous phase of semicrystalline polymers with minimal impact on crystallinity and thermomechanical properties. As a model case, PA 6,6 copolyamides were produced using the bioadvantaged monomer trans-3-hexenedioic acid (t3HDA). The analogous structure of t3HDA to adipic acid, a PA 6,6 monomer, allows for a seamless integration. Screening over the entire composition range identified the t3HDA loading (20 mol %) beyond which ...


Inherently Porous Atomically Thin Membranes For Gas Separation, Harpreet Atwal 2021 The University of Western Ontario

Inherently Porous Atomically Thin Membranes For Gas Separation, Harpreet Atwal

Electronic Thesis and Dissertation Repository

Membranes made from atomically thin materials promise hundreds of times higher production rates than conventional polymer membranes for separation applications. Graphene is impermeable to gases but becomes selectively permeable once pores are introduced into it but creating trillions of nanopores over large areas is difficult. By instead choosing an inherently porous two-dimensional material with naturally identical pores repeated at high density, we may circumvent this challenge. In this work, we explore the potential of two candidate materials, 2D polyphenylene and graphdiyne. We synthesize cyclohexane-m-phenylene, a monomer of 2D polyphenylene. We then develop an atomic force microscopy technique for measuring the ...


Direct Activation Of Light Alkanes To Value-Added Chemicals Using Supported Metal Oxide Catalysts, Md Ashraful Abedin 2021 Louisiana State Univ, Dept Chem Engn, Baton Rouge, LA

Direct Activation Of Light Alkanes To Value-Added Chemicals Using Supported Metal Oxide Catalysts, Md Ashraful Abedin

LSU Doctoral Dissertations

One of the most challenging aspects of modern-day catalysis is the conversion of methane. Direct conversion of methane via dehydroaromatization (MDHA) is a well-known process which can produce valuable hydrocarbons. Mo oxide supported on ZSM-5/MCM-22 has been studied extensively in recent years for MDHA. Mo carbides are responsible for activating methane by forming CHx species. These are dimerized into C2Hy and oligomerized on ZSM-5/MCM-22 Brønsted acid sites to form aromatics. Sulfated zirconia (SZ) supported Mo catalyst contains the acid sites necessary to produce benzene in MDHA. Here, sulfated hafnia (SH), a homologous oxide like SZ, has been proposed ...


Polarized X-Ray Scattering Measures Molecular Orientation In Polymer-Grafted Nanoparticles, Subhrangsu Mukherjee, Jason K. Streit, Eliot Gann, Kumar Saurabh, Daniel F. Sunday, Adarsh Krishnamurthy, Baskar Ganapathysubramanian, Lee J. Richter, Richard A. Vaia, Dean M. DeLongchamp 2021 National Institute of Standards and Technology

Polarized X-Ray Scattering Measures Molecular Orientation In Polymer-Grafted Nanoparticles, Subhrangsu Mukherjee, Jason K. Streit, Eliot Gann, Kumar Saurabh, Daniel F. Sunday, Adarsh Krishnamurthy, Baskar Ganapathysubramanian, Lee J. Richter, Richard A. Vaia, Dean M. Delongchamp

Mechanical Engineering Publications

Polymer chains are attached to nanoparticle surfaces for many purposes, including altering solubility, influencing aggregation, dispersion, and even tailoring immune responses in drug delivery. The most unique structural motif of polymer-grafted nanoparticles (PGNs) is the high-density region in the corona where polymer chains are stretched under significant confinement, but orientation of these chains has never been measured because conventional nanoscale-resolved measurements lack sensitivity to polymer orientation in amorphous regions. Here, we directly measure local chain orientation in polystyrene grafted gold nanoparticles using polarized resonant soft X-ray scattering (P-RSoXS). Using a computational scattering pattern simulation approach, we measure the thickness of ...


Self-Assembling Synthetic Nanoadjuvant Scaffolds Cross-Link B Cell Receptors And Represent New Platform Technology For Therapeutic Antibody Production, Sujata Senapati, Ross J. Darling, Kathleen A. Ross, Michael J. Wannemeuhler, Balaji Narasimhan, Surya K. Mallapragada 2021 Iowa State University

Self-Assembling Synthetic Nanoadjuvant Scaffolds Cross-Link B Cell Receptors And Represent New Platform Technology For Therapeutic Antibody Production, Sujata Senapati, Ross J. Darling, Kathleen A. Ross, Michael J. Wannemeuhler, Balaji Narasimhan, Surya K. Mallapragada

Chemical and Biological Engineering Publications

Host antibody responses are pivotal for providing protection against infectious agents. We have pioneered a new class of self-assembling micelles based on pentablock copolymers that enhance antibody responses while providing a low inflammatory environment compared to traditional adjuvants. This type of “just-right” immune response is critical in the rational design of vaccines for older adults. Here, we report on the mechanism of enhancement of antibody responses by pentablock copolymer micelles, which act as scaffolds for antigen presentation to B cells and cross-link B cell receptors, unlike other micelle-forming synthetic block copolymers. We exploited this unique mechanism and developed these scaffolds ...


Improvement Of Electrical Properties Of Cmc-Pva Doped With Various Contents Of Lino3 As An Application For Hybrid Polymer Electrolytes, Amalia Zulkifli, Norfatihah Mazuki, Ahmad Salihin Samsudin 2021 Ionic Materials Team, Faculty of Industrial Science and Technology, Universiti Malaysia Pahang, Gambang 26300, Malaysia

Improvement Of Electrical Properties Of Cmc-Pva Doped With Various Contents Of Lino3 As An Application For Hybrid Polymer Electrolytes, Amalia Zulkifli, Norfatihah Mazuki, Ahmad Salihin Samsudin

Makara Journal of Technology

The present work was carried out with the development of hybrid polymer electrolytes (HPEs) by using carboxymethyl cellulose (CMC)–polyvinyl alcohol (PVA) doped with different contents of lithium nitrate (LiNO3) for the determination of their structural and conduction properties. The structural analysis was conducted by using Fourier transform infra-red spectroscopy and showed the interaction between the blend host polymer and ionic dopant, which formed via the coordinating site of CMC-PVA and Li+-NO3−. The complexes of CMC-PVA doped LiNO3 led to an increment in ionic conductivity, as observed by electrical impedance spectroscopy, and the sample containing 20 wt% LiNO3 obtained ...


Comparison Of Concrete And Steel Jacket Methods For Reinforcing A Concrete Bridge Pier By Numerical And Experimental Studies, Hadi Faghihmaleki 2021 Assistant Professor, Department of Civil Engineering, Ayandegan Institute of Higher Education, Tonekabon, Iran

Comparison Of Concrete And Steel Jacket Methods For Reinforcing A Concrete Bridge Pier By Numerical And Experimental Studies, Hadi Faghihmaleki

Makara Journal of Technology

Various rehabilitation and strengthening procedures have been developed in recent decades. A study to determine which methods can be implemented to increase the useful life of the bridge before strengthening must be performed. In this study, the seismic behavior of a reinforced concrete bridge pier with dimension 3.5 × 3.5 m, which was reinforced by two steel and a concrete jacket, was investigated. Nonlinear geometric models and materials were analyzed to estimate the seismic parameters of the pier. Results show an increase in energy absorption, ultimate strength, and ductility for the steel jacket, as well as a greater increase ...


Effect Of Arc Plasma Sintering On The Structural And Microstructural Properties Of Fe-Cr-Ni Austenitic Stainless Steels, Parikin Parikin, M. Dani, A. Dimyati, N. D. Purnamasari, B. Sugeng, M. Panitra, A. Insani, T. H. Priyanto, S. Mustofa, Syahbuddin Syahbuddin, A. Huang 2021 Center for Science and Technology of Advanced Materials, National Nuclear Energy Agency (BATAN), South Tangerang 15314, Indonesia

Effect Of Arc Plasma Sintering On The Structural And Microstructural Properties Of Fe-Cr-Ni Austenitic Stainless Steels, Parikin Parikin, M. Dani, A. Dimyati, N. D. Purnamasari, B. Sugeng, M. Panitra, A. Insani, T. H. Priyanto, S. Mustofa, Syahbuddin Syahbuddin, A. Huang

Makara Journal of Technology

X-ray diffraction techniques were performed to determine the actual crystal structure of A2 austenitic stainless steel (ASS) as-cast and A2 ASS after arc plasma sintering (APS) for 2 s. Computations were conducted on the basis of the Bragg arithmetic formula by comparing the S2 arithmetic with the interplanar spacing. The Bragg arithmetic formula is a simple series for the determination of the crystalline phase of materials based on the Miller indices of cubic shapes or other shapes. A2 ASS as-cast was identified to have a crystal structure of face-centered cubic with lattice parameter a = 3.58 Å. A similar crystal ...


Trend Significance Levels Of Rain Onset And Cessation And Lengths Of The Wet And Dry Seasons In Epe, Lagos State, Nigeria, Adekunle Adedeji Alli, Olorunwa Eric Omofunmi 2021 Department of Agricultural & Bio-Environmental Engineering, Yaba College of Technology, Yaba, Lagos, Nigeria

Trend Significance Levels Of Rain Onset And Cessation And Lengths Of The Wet And Dry Seasons In Epe, Lagos State, Nigeria, Adekunle Adedeji Alli, Olorunwa Eric Omofunmi

Makara Journal of Technology

This study aims to reduce crop failure resulting from a dry spell, which is the first occurrence of unsustainable rainfall that deceives farmers into planting. Thus, trends need to be tested using hypothesis, kurtosis, and other statistics to analyze the risks associated with unstable planting calendars and their possible mitigation strategies. The daily rainfall data from 1982 to 2018 were obtained from the archive of NASA/POWER SRB/FLASH, and the research location is Epe, Lagos State, Nigeria, which lies at latitude 6.585° N and longitude 3.962° E. Microsoft Excel was used to perform the tests. Results show ...


Music Information Retrieval Based On Active Frequency, Hardianto Wibowo, Wildan Suharso, Yufis Azhar, Galih Wasis Wicaksono, Agus Eko Minarno, Dani Harmanto 2021 Informatic Engineering, Universitas Muhammadiyah Malang, Malang 65144, Indonesia

Music Information Retrieval Based On Active Frequency, Hardianto Wibowo, Wildan Suharso, Yufis Azhar, Galih Wasis Wicaksono, Agus Eko Minarno, Dani Harmanto

Makara Journal of Technology

Music is the art of combining frequencies. A balance of frequencies gives rise to a harmonious tone. Several features of music can be analyzed, and they include sociocultural background, lyrics, mood, tempo, rhythm, harmony, melody, timbre, and instrumentation. In this study, we use the frequency of instrumentation as a feature for classification because each instrument has a frequency range. To test this frequency range, we use five music genres and one music playing skill. The five genres are dangdut, electronic dance music (EDM), metal, pop/rock, and reggae. The music playing skill is acoustic. Active frequencies are tested using the ...


Kinetic Modeling Study Of Laminar Burning Velocity Of Gasoline–Ethanol–Methanol Blends At Elevated Temperature And Pressure, Ahmad Syihan Auzani, Cahyo Setyo Wibowo, Riesta Anggarani, Yulianto Sulistyo Nugroho, Bambang Sugiarto 2021 Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

Kinetic Modeling Study Of Laminar Burning Velocity Of Gasoline–Ethanol–Methanol Blends At Elevated Temperature And Pressure, Ahmad Syihan Auzani, Cahyo Setyo Wibowo, Riesta Anggarani, Yulianto Sulistyo Nugroho, Bambang Sugiarto

Makara Journal of Technology

Gasoline–ethanol–methanol (GEM) blends have been considered to replace pure gasoline as spark ignition engine fuel. Their physical and chemical properties and performance and emission measurements from real engines have been reported previously. However, a fundamental study that can explain the unique results of GEM compared with those of pure gasoline is lacking. This study aims to compare the laminar burning velocity of GEM blends at different mixtures, equivalence ratios, temperatures, and pressures with that of pure gasoline. A laminar flame propagation model and reaction mechanisms from the literature were were for a numerical simulation. In this study, the ...


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