Submissions from 2022
Establishing Pteridine Metabolism in a Progressive Isogenic Breast Cancer Cell Model – Part II, Lindsey Rasmussen, Zachary Foulks, Jiandong Wu, Casey Burton, and Honglan Shi
Integration of Dynamic Growth Modeling and Hydrodynamics in an Internal-Loop Split Photobioreactor, Laith S. Sabri, Aastha Ojha, Abbas J. Sultan, and Muthanna H. Al-Dahhan
Integration of Dynamic Growth Modeling and Hydrodynamics in an Internal-Loop Split Photobioreactor, Laith S. Sabri, Aastha Ojha, Abbas J. Sultan, and Muthanna H. Aldahhan
A Detailed Hydrodynamic Study of the Split-Plate Airlift Reactor by using Non-Invasive Gamma-Ray Techniques, Laith S. Sabri, Abbas J. Sultan, Hasan Shakir Majdi, Shadha K. Jebur, and Muthanna H. Al-Dahhan
A Detailed Hydrodynamic Study of the Split-Plate Airlift Reactor by using Non-Invasive Gamma-Ray Techniques, Laith S. Sabri, Abbas J. Sultan, Hasan Shakir Majdi, Shadha K. Jebur, and Muthanna H. Al-Dahhan
Characterizations and Potential Recovery Pathways of Phosphate Mines Waste Rocks, Amine el Mahdi Safhi, Hicham Amar, Yahya El Berdai, Mustapha El Ghorfi, Yassine Taha, Rachid Hakkou, Muthanna H. Al-Dahhan, and Mostafa Benzaazoua
Adhesion of Bioactive Glass-Based Adhesive to Bone, Varinder Pal Singh Sidhu, Faizan Bilwani, Mark R. Towler, and Marcello Papini
Reduced Building Energy Consumption by Combined Indoor CO2 and H2O Composition Control, Anshuman Sinha, Harshul Thakkar, Fateme Rezaei, Yoshiaki Kawajiri, and Matthew J. Realff
Reduced Building Energy Consumption by Combined Indoor CO₂ and H₂O Composition Control, Anshuman Sinha, Harshul Thakkar, Fateme Rezaei, Yoshiaki Kawajiri, and Matthew J. Realff
Study of Gas Holdup Distribution in Cylindrical Split Airlift Reactor by using Gamma-Ray Densitometry (GRD), Abbas J. Sultan, Laith S. Sabri, Hasan Shakir Majdi, Shadha K. Jebur, and Muthanna H. Al-Dahhan
Study of Gas Holdup Distribution in Cylindrical Split Airlift Reactor by using Gamma-Ray Densitometry (GRD), Abbas J. Sultan, Laith S. Sabri, Hasan Shakir Majdi, Shadha K. Jebur, and Muthanna H. Al-Dahhan
Comparison of the Radial Profiles of Particles Velocity between Invasive and Non-Invasive Measurement Techniques, Haidar Taofeeq, Abdelsalam Efhaima, and Muthanna H. Al-Dahhan
Comparison of the Radial Profiles of Particles Velocity between Invasive and Non-Invasive Measurement Techniques, Haidar Taofeeq, Abdelsalam Efhaima, and Muthanna H. Al-Dahhan
Flow Regimes in Gas-Solid Fluidized Beds Via Micro-Foil Heat Flux Sensor, Haidar Taofeeq, Sebastián Uribe, and Muthanna H. Al-Dahhan
Flow Regimes in Gas-Solid Fluidized Beds via Micro-Foil Heat Flux Sensor, Haidar Taofeeq, Sebastián Uribe, and Muthanna H. Al-Dahhan
Modelling and Validation of a Gas-Solid Fluidized Bed using Advanced Measurement Techniques, Sebastián Uribe, Haidar Taofeeq, and Muthanna H. Al-Dahhan
Dendrimer-Based Drug Delivery Systems: History, Challenges, and Latest Developments, Juan Wang, Boxuan Li, Li Qiu, Xin Qiao, and Hu Yang
Ionic Liquid Pilocarpine Analog as an Antiglaucoma Drug Candidate, Juan Wang, Boxuan Li, Jing Tang, Li Qiu, Xin Qiao, Na Xu, and Hu Yang
Highly Stable Pt-Co Bimetallic Catalysts Prepared by Atomic Layer Deposition for Selective Hydrogenation of Cinnamaldehyde, Kaiying Wang, Xiaoqing He, Jee-Ching Wang, and Xinhua Liang
Highly Stable Pt-Co Bimetallic Catalysts Prepared by Atomic Layer Deposition for Selective Hydrogenation of Cinnamaldehyde, Kaiying Wang, Xiaoqing He, Jee-Ching Wang, and Xinhua Liang
Influence of Saccharide Modifications on Heparin Lyase III Substrate Specificities, Jiandong Wu, Pradeep Chopra, Geert Jan Boons, and Joseph Zaia
Glycyrrhetinic Acid-Cyclodextrin Grafted Pullulan Nanoparticles Loaded Doxorubicin as a Liver Targeted Delivery Carrier, Wenzhi Yang, Yi Zhang, Jiajia Wang, Haiying Li, and Hu Yang
Glycyrrhetinic Acid-Cyclodextrin Grafted Pullulan Nanoparticles Loaded Doxorubicin as a Liver Targeted Delivery Carrier, Wenzhi Yang, Yi Zhang, Jiajia Wang, Haiying Li, and Hu Yang
Recovery of Degraded Ni-Rich NMC811 Particles for Lithium-Ion Batteries, Han Yu, Yan Gao, James Kirtley, Gabriel Borgmeyer, Xiaoqing He, and Xinhua Liang
Recovery of Degraded Ni-Rich NMC811 Particles for Lithium-Ion Batteries, Han Yu, Yan Gao, James Kirtley, Gabriel Borgmeyer, Xiaoqing He, and Xinhua Liang
AlF3-Al2O3 ALD Thin-Film-Coated Li1.2Mn0.54Co0.13Ni0.13O2 Particles for Lithium-Ion Batteries: Long-Term Protection, Han Yu, Xiaoqing He, and Xinhua Liang
AlF₃-Al₂O₃ ALD Thin-Film-Coated Li₁.₂Mn₀.₅₄Co₀.₁₃Ni₀.₁₃O₂ Particles for Lithium-Ion Batteries: Long-Term Protection, Han Yu, Xiaoqing He, and Xinhua Liang
Teaching Energy Economics in the Gcc: A Synergistic Approach between Engineering and Economics, Yishu Zhou, Joseph D. Smith, and Gregory M. Gelles
Submissions from 2021
Isolation and Purification of Glycoglycerolipids to Induce Apoptosis in Breast Cancer Cells, Muhammad Raisul Abedin and Sutapa Barua
Antibody-Drug Nanoparticle Induces Synergistic Treatment Efficacies in HER2 Positive Breast Cancer Cells, Muhammad Raisul Abedin, Kaitlyne Powers, Rachel Aiardo, Dibbya Barua, and Sutapa Barua
Poly (4-Styrenesulfonic Acid): A Recoverable and Reusable Catalyst for Acid Hydrolysis of Polyethylene Terephthalate, Hossein Abedsoltan, Ibeh S. Omodolor, Ana C. Alba-Rubio, and Maria R. Coleman
Investigation of Combined Capture-Destruction of Toluene over Pd/Mil-101 and Tio₂/MIL-101 Dual Function Materials, Busuyi O. Adebayo, Anirudh Krishnamurthy, Qasim Al-Naddaf, Ali A. Rownaghi, and Fateme Rezaei
Passive Control of Indoor Formaldehyde by Mixed-Metal Oxide Latex Paints, Busuyi O. Adebayo, Jacob Trautman, Qasim Al-Naddaf, Ali A. Rownaghi, and Fateme Rezaei
Enhancing Emulsion Liquid Membrane System (ELM) Stability and Performance for the Extraction of Phenol from Wastewater using Various Nanoparticles, Faris H. Al-Ani, Qusay F. Alsalhy, and Muthanna H. Al-Dahhan
Effect of Catalyst Shape on Pressure Drop and Liquid Holdup in a Pilot Plant Trickle Bed Reactor, Mohammed Al-Ani and Muthanna H. Al-Dahhan
A Review on the Hydrodynamics of the Liquid-Liquid Two-Phase Flow in the Microchannels, Marwah Al-Azzawi, Farouq S. Mjalli, Afzal Husain, and Muthanna H. Al-Dahhan
Metal-Doped K-Ca Double Salts with Improved Capture Performance and Stability for High-Temperature CO₂ Adsorption, Turki Alghamdi, Khaled S. Baamran, Monday Uchenna Okoronkwo, Ali A. Rownaghi, and Fateme Rezaei
A Conceptual Efficient Design Of Energy Recovery Systems Using A New Energy-area Key Parameter, Ibrahim H. Alhajri, Mamdouh A. Gadalla, and Hany A. Elazab
Toward a Better Air-Assisted Flare Design for Purge Flow Conditions: Experimental and Computational Investigation of Radial Slot Flow into a Crossflow Environment, Hayder A. Alhameedi, Aso A. Hassan, Joseph D. Smith, and Muthanna H. Al-Dahhan
Removal of Hydrocarbons of 4-Nitrophenol by Emulsion Liquid Membrane (ELM) using Magnetic Fe₂O₃ Nanoparticles and Ionic Liquid, Qusay Al-Obaidi, Malak Alabdulmuhsin, Alice Tolstik, Jacob G. Trautman, and Muthanna H. Al-Dahhan
Adsorption of Iodine from Aqueous Solutions by Aminosilane-Grafted Mesoporous Alumina, Mansour Alsalbokh, Noah Fakeri, Shane Lawson, Ali A. Rownaghi, and Fateme Rezaei
Aminosilane-Grafted Bismuth-Alumina Adsorbents: Role of Amine Loading and Bismuth Content in Iodine Immobilization from Aqueous Solutions, Mansour Alsalbokh, Noah Fakeri, Ali A. Rownaghi, Douglas K. Ludlow, and Fateme Rezaei
Towards Estimating Absorption of Major Air Pollutant Gasses in Ionic Liquids using Soft Computing Methods, Farid Amirkhani, Amir Dashti, Hossein Abedsoltan, Amir H. Mohammadi, and Kwok Wing Chau
Roles of Key Ion Channels and Transport Proteins in Age-Related Hearing Loss, Parveen Bazard, Robert D. Frisina, Alejandro A. Acosta, Sneha Dasgupta, Mark A. Bauer, Xiaoxia Zhu, and Bo Ding
Cochlear Inflammaging in Relation to Ion Channels and Mitochondrial Functions, Parveen Bazard, Jennifer Pineros, Robert D. Frisina, Mark A. Bauer, Alejandro A. Acosta, Lauren R. Paganella, Dominika Borakiewicz, Mark Thivierge, Freyda L. Mannering, Xiaoxia Zhu, and Bo Ding
The 3-O-Sulfation of Heparan Sulfate Modulates Protein Binding and Lyase Degradation, Pradeep Chopra, Apoorva Joshi, Jiandong Wu, Weigang Lu, Tejabhiram Yadavalli, Margreet A. Wolfert, Deepak Shukla, Joseph Zaia, and Geert Jan Boons
Influence of Water Activity on Belite (ß-C₂S) Hydration, Rachel Cook, Hongyan Ma, Monday Uchenna Okoronkwo, Gaurav Sant, and Aditya Kumar
Water Absorption Enhancement Of Sodium Poly Acrylate And Poly(2-Acrylamido-2-Methylpropane Sulphonic Acid) Based Hydrogel Mixtures, Sohair A. Darwish, Ibrahim M. Ibrahim, Nasser Y. Mostafa, Mostafa A. Radwan, Mohamed A. Sadek, and Hany A. Elazab
Removal Of Methylene Blue By Adsorption Of Water Hyacinth Derived Active Carbon Embedded With Cobalt Nanoparticles, Hany A. Elazab, A. O. Okasha, M. A. Radwan, M. A. Sadek, Amin Firouzi, and Tamer T. El-Idreesy
Equilibrium And Kinetic Study On The Biosorption Of Trypan Blue From Aqueous Solutions Using Avocado Seed Powder, Tamer T. El-Idreesy, Omar Khoshala, Amin Firouzi, and Hany A. Elazab
EFFECT OF ADDITION OF NANO SILICON DIOXIDE TO CEMENT BRICKS: PREPARATION AND CHARACTERICTICS, Rehab Emad, Ibrahim M. Ibrahim, M. A. Radwan, M. A. Sadek, and Hany A. Elazab
Roles of Interaction between Components in CZZA/HZSM-5 Catalyst for Dimethyl Ether Synthesis via Co₂ Hydrogenation, Xiao Fan, Baitang Jin, Shoujie Ren, Shiguang Li, Miao Yu, and Xinhua Liang
Enhanced Stability of Fe-Modified Cuo-Zno-Zro₂-Al₂O₃/HZSM-5 Bifunctional Catalysts for Dimethyl Ether Synthesis from Co₂ Hydrogenation, Xiao Fan, Shoujie Ren, Baitang Jin, Shiguang Li, Miao Yu, and Xinhua Liang
Advanced Pore Characterization and Adsorption of Light Gases over Aerogel-Derived Activated Carbon, Hojat Majedi Far, Shane Lawson, Qasim Al-Naddaf, Fateme Rezaei, Chariklia Sotiriou-Leventis, and Ali A. Rownaghi
Oxidative Dehydrogenation of Propane over 3D Printed Mixed Metal Oxides/H-ZSM-5 Monolithic Catalysts using CO₂ as an Oxidant, Alireza Farsad, Shane Lawson, Fateme Rezaei, and Ali A. Rownaghi
A Wirelessly Controlled Scalable 3d-Printed Microsystem for Drug Delivery, Farzad Forouzandeh, Nuzhet N. Ahamed, Xiaoxia Zhu, Parveen Bazard, Krittika Goyal, Joseph P. Walton, Robert D. Frisina, and David A. Borkholder
Translational Implications of the Interactions between Hormones and Age-Related Hearing Loss, R. D. Frisina, Parveen Bazard, M. Bauer, J. Pineros, X. Zhu, and B. Ding
Better Heat And Power Integration Of An Existing Gas-oil Plant In Egypt Through Revamping The Design And Organic Rankine Cycle, Mamdouh A. Gadalla, Alaa Elmasry, Ibrahim Alhajri, Fatma H. Ashour, and Hany A. Elazab
Effect Of Using Nanoparticle-based Diesel Fuel On Enhancement Of Performance And Emissions Of Diesel Engines, Mamdouh A. Gadalla, Omar M. Mazen, Tarek M. Aboul-Fotouh, Fatma H. Ashour, and Hany A. Elazab
Fe Doping in LiMn₁.₅Ni₀.₅O₄ by Atomic Layer Deposition Followed by Annealing: Depths and Occupation Sites, Yan Gao, Han Yu, Prashanth Sandineni, Xiaoqing He, Amitava Choudhury, Jonghyun Park, and Xinhua Liang
Liquid and Solids Phase Backmixing in a Bubble and Slurry Bubble Column using a Virtual Tracer Response Methodology based on the Trajectory Data of the Radioactive Particle Tracking (RPT) Technique, Lu Han, Premkumar Kamalanathan, and Muthanna H. Al-Dahhan
Study of the Detailed Catalyst Hydrodynamics using Radioactive Particle Tracking Technique in a Mimicked Fischer-Tropsch Slurry Bubble Column, Lu Han, Premkumar Kamalanathan, and Muthanna H. Al-Dahhan
Mixed Matrix Membranes for Sustainable Electrical Energy-Saving Applications, Hossein Riasat Harami, Farid Amirkhani, Hossein Abedsoltan, Mohammad Younas, Mashallah Rezakazemi, Mahdi Sheikh, and Saeed Shirazian
Comparative Evaluation of Two Glass Polyalkenoate Cements: An in Vivo Pilot Study using a Sheep Model, Leyla Hasandoost, Daniella Marx, Paul Zalzal, Oleg Safir, Mark Hurtig, Cina Mehrvar, Stephen D. Waldman, Marcello Papini, and Mark R. Towler
Laboratory-Scale Research of Non-Catalyzed Supercritical Alcohol Process for Continuous Biodiesel Production, Aso A. Hassan and Joseph D. Smith
PDMS/PAI-HF Composite Membrane Containing Immobilized Palladium Nanoparticles for 4-Nitrophenol Reduction, Yingxin He, Naeema Cheshomi, Shane M. Lawson, Arun K. Itta, Fateme Rezaei, Shubhender Kapila, and Ali A. Rownaghi
GAGrank: Software for Glycosaminoglycan Sequence Ranking using a Bipartite Graph Model, John D. Hogan, Jiandong Wu, Joshua A. Klein, Cheng Lin, Luis Carvalho, and Joseph Zaia
Enhanced Activity and Stability of MgO-Promoted Ni/Al₂O₃ Catalyst for Dry Reforming of Methane: Role of MgO, Baitang Jin, Shiguang Li, and Xinhua Liang
High Safety and Long-Life Lithium Batteries with Low Leakage and High Wettability Ceramic-Polymer Electrolyte, Ye Jin, Han Yu, Yan Gao, and Xinhua Liang
Understanding the Roles of Atomic Layer Deposition in Improving the Electrochemical Performance of Lithium-Ion Batteries, Ye Jin, Han Yu, and Xinhua Liang
Hydration of High-Alumina Calcium Aluminate Cements with Carbonate and Sulfate Additives, Jonathan Lapeyre, Sai Akshay Ponduru, Monday Uchenna Okoronkwo, Hongyan Ma, and Aditya Kumar
Assessment of CO₂/CH₄ Separation Performance of 3D-Printed Carbon Monoliths in Pressure Swing Adsorption, Shane Lawson, Qasim Al-Naddaf, Kyle Newport, Ali A. Rownaghi, and Fateme Rezaei
Screening of Adsorbent/Catalyst Composite Monoliths for Carbon Capture-Utilization and Ethylene Production, Shane Lawson, Khaled Baamran, Kyle Newport, Fateme Rezaei, and Ali A. Rownaghi
A Novel Method of 3D Printing High-Loaded Oxide/H-ZSM-5 Catalyst Monoliths for Carbon Dioxide Reduction in Tandem with Propane Dehydrogenation, Shane Lawson, Alireza Farsad, Busuyi O. Adebayo, Kyle Newport, Kurt Schueddig, Ethan Lowrey, Felipe Polo-Garzon, Fateme Rezaei, and Ali A. Rownaghi
Direct Ink Writing of Metal Oxide/H-ZSM-5 Catalysts for N-Hexane Cracking: A New Method of Additive Manufacturing with High Metal Oxide Loading, Shane Lawson, Alireza Farsad, Fateme Rezaei, Douglas K. Ludlow, and Ali A. Rownaghi
Recent Advances in 3D Printing of Structured Materials for Adsorption and Catalysis Applications, Shane Lawson, Xin Li, Harshul Thakkar, Ali A. Rownaghi, and Fateme Rezaei
Structured Bifunctional Catalysts for CO₂ Activation and Oxidative Dehydrogenation of Propane, Shane Lawson, Kyle A. Newport, Amanda Axtell, Cameryn Boucher, Brianne Grant, Molly Haas, Mallory Lee, Fateme Rezaei, and Ali A. Rownaghi
Binderless Zeolite Monoliths Production with Sacrificial Biopolymers, Shane Lawson, Kyle Newport, Qasim Al-Naddaf, Alechine E. Ameh, Ali A. Rownaghi, Leslie F. Petrik, and Fateme Rezaei
Curcumin Delivery on Metal-Organic Frameworks: The Effect of the Metal Center on Pharmacokinetics within the M-MOF-74 Family, Shane Lawson, Kyle A. Newport, Neila Pederniera, Ali A. Rownaghi, and Fateme Rezaei
Effects of Process Parameters on Co₂/H₂ Separation Performance of 3D-Printed Mof-74 Monoliths, Shane Lawson and Fateme Rezaei
Mixing Mg-MOF-74 with Zn-MOF-74: A Facile Pathway of Controlling the Pharmacokinetic Release Rate of Curcumin, Shane Lawson, Andrew Siemers, Jason Kostlenick, Qasim Al-Naddaf, Kyle Newport, Ali A. Rownaghi, and Fateme Rezaei
Lignin-Zein Composite: Synthesis, Three-Dimensional Printing, and Microbial Degradation, Jin Gyun Lee, Yusheng Guo, Jorge A. Belgodere, Ahmed Al Harraq, Aubry A. Hymel, Amber J. Pete, Kalliat T. Valsaraj, Michael G. Benton, Mary G. Miller, Jangwook P. Jung, and Bhuvnesh Bharti
Novel Method of Manufacture of Metal Nanoparticles and Metal Single-Atom Materials on Various Substrates and Novel Compositions, Xinhua Liang and Xiaofeng Wang
Fluorination of Al₂O₃ Coating for Lithium-Ion Battery, Xinhua Liang and Han Yu
The High-Yield Direct Synthesis of Dimethyl Ether from CO₂ and H₂ in a Dry Reaction Environment, Huazheng Li, Shoujie Ren, Shenxiang Zhang, Surya Padinjarekutt, Bratin Sengupta, Xinhua Liang, Shiguang Li, and Miao Yu
Directly Printed Oxide/ZSM-5 Bifunctional Catalysts for Methanol Conversion to Dimethyl Ether with Exceptional Stability, Conversion, and Selectivity, Fatima Magzoub, Shane Lawson, Fateme Rezaei, and Ali A. Rownaghi
In Vitro Osteogenic Performance of Two Novel Strontium and Zinc-Containing Glass Polyalkenoate Cements, Daniella Marx, Alireza Rahimnejad Yazdi, Marcello Papini, and Mark R. Towler
In Vivo Analysis of a Proprietary Glass-Based Adhesive for Sternal Fixation and Stabilization using Rabbit and Sheep Models, Cina Mehrvar, Emily Deignan, Mark Hurtig, Gideon Cohen, Paul Zalzal, Oleg Safir, Adel Alhalawani, Marcello Papini, and Mark R. Towler
Enhancement of CO2 Desorption from MEA-Based Nanofluids in Membrane Contactor: Simulation Study, Harith N. Mohammed, Safaa M.R. Ahmed, Hayder Al-Naseri, and Muthanna H. Al-Dahhan
Heavy Oil and VAPEX Process: A Brief Review, Vijitha Mohan, Parthasakha Neogi, and Baojun Bai
Dynamics in Drops as Confined Systems Containing Nanoparticles: Reformation of Nanoparticles and Evaporation of Water, Vijitha Mohan, Xianjie Qiu, and Partho Neogi
Investigating the Microstructure of High-Calcium Fly Ash-Based Alkali-Activated Material for Aqueous Zn Sorption, Sukanta K. Mondal, Adam Welz, Ali A. Rownaghi, Bu Wang, Hongyan Ma, Fateme Rezaei, Aditya Kumar, and Monday Uchenna Okoronkwo
Tantalum-Containing Mesoporous Bioactive Glass Powder for Hemostasis, Malvika Nagrath, Reid Gallant, Alireza Rahimnejad Yazdi, Andrew Mendonca, Saidur Rahman, Loraine Chiu, Stephen D. Waldman, Heyu Ni, and Mark R. Towler
Tantalum-Containing Meso-Porous Glass Fibres for Hemostatic Applications, Malvika Nagrath, Alireza Rahimnejad Yazdi, Aran Rafferty, Dermot Daly, Saeed Ur Rahman, Reid C. Gallant, Heyu Ni, Praveen R. Arany, and Mark R. Towler
Analysis of the Cyanobacterial Amino Acid Metabolism with a Precise Genome-Scale Metabolic Reconstruction of Anabaena Sp. Utex 2576, Daniel A. Norena-Caro, Cristal Zuniga, Amber J. Pete, Sven A. Saemundsson, Morgan R. Donaldson, Alexandria J. Adams, Kerry M. Dooley, Karsten Zengler, and Michael G. Benton
Local Volumetric Mass Transfer Coefficient Estimation for Scenedesmus Microalgae Culture in a Cylindrical Airlift Photobioreactor, Aastha Ojah, Laith S. Sabri, and Muthanna H. Al-Dahhan
Formation and Stability of Gismondine-Type Zeolite in Cementitious Systems, Monday Uchenna Okoronkwo, Sukanta K. Mondal, Bu Wang, Hongyan Ma, and Aditya Kumar
AIChE Virtual Communities of Practice – Supporting Faculty during the COVID-19 Pandemic, Christi L. Patton (Luks)
Nano-Enhanced Bioremediation for Oil Spills: A Review, Amber J. Pete, Bhuvnesh Bharti, and Michael G. Benton
A Gallium-Doped Cement for the Treatment of Bone Cancers. the Effect of ZnO ↔ Ga2O3substitution of an Ionomeric Glass Series on the Rheological, Mechanical, PH and Ion-Eluting Properties of their Corresponding Glass Polyalkenoate Cements, Sunjeev Phull, Alireza Rahimnejad Yazdi, and Mark R. Towler
