Algorithmically Optimized Hemispherical Dome as a Secondary Optical Element for the Fresnel Lens Solar Concentrator (open access)

Algorithmically Optimized Hemispherical Dome as a Secondary Optical Element for the Fresnel Lens Solar Concentrator

This article focuses on a way to maximize the concentration acceptance product (CAP), while using the minimum SOE and receiver geometry at a given f-number and incidence angle (also referred to as the tracking error angle). The laws of polychromatic light refraction along with trigonometry and spherical geometry were utilized to optimize the POE grooves, SOE radius, receiver size, and SOE–receiver spacing.
Date: July 8, 2019
Creator: Qandil, Hassan; Wang, Shuping & Zhao, Weihuan
Object Type: Article
System: The UNT Digital Library
Application-based design of the Fresnel lens solar concentrator (open access)

Application-based design of the Fresnel lens solar concentrator

Article investigates a novel genetically themed hierarchical algorithm (GTHA) to design Fresnel lens solar concentrators that match with the distinct energy input and spatial geometry of various thermal applications.
Date: August 2, 2019
Creator: Qandil, Hassan; Wang, Shuping & Zhao, Weihuan
Object Type: Article
System: The UNT Digital Library
A Bio-Hygromorph Fabricated with Fish Swim Bladder Hydrogel and Wood Flour-Filled Polylactic Acid Scaffold by 3D Printing (open access)

A Bio-Hygromorph Fabricated with Fish Swim Bladder Hydrogel and Wood Flour-Filled Polylactic Acid Scaffold by 3D Printing

Describes a study where researchers constructed a bio-hygromorph using fish swim bladder hydrogel as the hydrophilic material and wood flour-filled polylactic acid (WPLA) scaffold, which was printed with fused deposition modeling (FDM) 3D printing technology (3DP).
Date: September 7, 2019
Creator: Li, Peng; Pan, Ling; Liu, Dexi; Tao, Yubo & Shi, Sheldon
Object Type: Article
System: The UNT Digital Library
Bioinspired cellular sheath-core electrospun non-woven mesh (open access)

Bioinspired cellular sheath-core electrospun non-woven mesh

Article using preferential solubility of a polymer in supercritical CO2 to develop a new architecture using biocompatible polymers based on porous core-sheath fiber fabrication technique.
Date: May 23, 2019
Creator: Rizvi, Hussain R.; D'Souza, Nandika Anne, 1967-; Ayre, Brian G. & Ramesh, Dinesh
Object Type: Article
System: The UNT Digital Library
Characterization and Research on Mechanical Properties of Bamboo Plastic Composites (open access)

Characterization and Research on Mechanical Properties of Bamboo Plastic Composites

This article observes the mechanical properties of bamboo plastic composites (BPCs) with bamboo pulp fiber (BPF) or white mud (WM).
Date: July 1, 2018
Creator: Xian, Yu; Ma, Dongjuan; Wang, Cuicui; Wang, Ge; Smith, Lee M. & Cheng, Haitao
Object Type: Article
System: The UNT Digital Library
Combined effects of ZnO particle deposition and heat treatment on dimensional stability and mechanical properties of poplar wood (open access)

Combined effects of ZnO particle deposition and heat treatment on dimensional stability and mechanical properties of poplar wood

This article proposes a one-step wood modification method by combining the deposition of ZnO particles on wood surface and heat treatment.
Date: May 24, 2017
Creator: Cui, Wei; Zhang, Nannan; Xu, Min & Cai, Liping
Object Type: Article
System: The UNT Digital Library
Competition Between Resonant Plasmonic Coupling and Electrostatic Interaction in Reduced Graphene Oxide Quantum Dots (open access)

Competition Between Resonant Plasmonic Coupling and Electrostatic Interaction in Reduced Graphene Oxide Quantum Dots

This article presents a study of the plasmonic interaction that effects the optical properties of light emission from graphene oxide system.
Date: November 22, 2016
Creator: Karna, Sanjya; Mahat, M.; Choi, Tae-Youl; Shimada, Ryoko; Wang, Zhiming & Neogi, Arup
Object Type: Article
System: The UNT Digital Library
Computational Fluid Dynamics, potential flow and system-based simulations of fully appended free running 5415M in calm water and waves (open access)

Computational Fluid Dynamics, potential flow and system-based simulations of fully appended free running 5415M in calm water and waves

Article assesses the capabilities of computational fluid dynamics (CFD), potential flow (PF), and system-based (SB) methods for course keeping in calm water and regular and bi-chromatic waves for 5415M as a benchmark test case for AVT-161.
Date: December 27, 2018
Creator: Toxopeus, Serge; Sadat Hosseini, Seyed Hamid; Visonneau, Michel; Guilmineau, Emmanuel; Yen, Tin-Guen; Lin, Woei-Min et al.
Object Type: Article
System: The UNT Digital Library
Development and Application of Wood Flour-Filled Polylactic Acid Composite Filament for 3D Printing (open access)

Development and Application of Wood Flour-Filled Polylactic Acid Composite Filament for 3D Printing

This article presents the development of wood flour (WF)-filled polylactic acid (PLA) composite filaments for a fused deposition modeling (FDM) process with the aim of application to 3D printing.
Date: March 24, 2017
Creator: Tao, Yubo; Wang, Honglei; Li, Zelong; Li, Peng & Shi, Sheldon Q.
Object Type: Article
System: The UNT Digital Library
Direct Electrochemical Detection of Glutamate, Acetylcholine, Choline, and Adenosine Using Non-Enzymatic Electrodes (open access)

Direct Electrochemical Detection of Glutamate, Acetylcholine, Choline, and Adenosine Using Non-Enzymatic Electrodes

This article aims to give a summary of the state of the art of non-enzymatic electrochemical sensors used for detection of neurotransmitter that lack an electrochemically active component.
Date: November 9, 2018
Creator: Shadlaghani, Arash; Farzaneh, Mahsa; Kinser, Dacen & Reid, Russell C.
Object Type: Article
System: The UNT Digital Library
Durable, High Conductivity, Superhydrophobicity Bamboo Timber Surface for Nanoimprint Stamps (open access)

Durable, High Conductivity, Superhydrophobicity Bamboo Timber Surface for Nanoimprint Stamps

This article discusses the fabrication of superhydrophobic bamboo timber by magnetron sputtering and nanoimprint stamps. It was expected that this work could promote the applications of superhydrophobic and conductive bamboo products.
Date: December 6, 2017
Creator: Bao, Wenhui; Liang, Daxin; Zhang, Ming; Jiao, Yue; Wang, Lijuan; Cai, Liping et al.
Object Type: Article
System: The UNT Digital Library
Effect of Impregnated Inorganic Nanoparticles on the Properties of the Kenaf Bast Fibers (open access)

Effect of Impregnated Inorganic Nanoparticles on the Properties of the Kenaf Bast Fibers

This article evaluates the properties of the chemically retted kenaf bast fiber impregnated with the inorganic nanoparticles.
Date: August 22, 2014
Creator: Liang, Kaiwen; Shi, Sheldon Q. & Wang, Ge
Object Type: Article
System: The UNT Digital Library
Effect of light-delignification on mechanical, hydrophobic, and thermal properties of high-strength molded fiber materials (open access)

Effect of light-delignification on mechanical, hydrophobic, and thermal properties of high-strength molded fiber materials

This article discusses the development of a high-strength molded fiber material using pulp fibers, which coudl be a good substitute for plastic and solid wood materials.
Date: July 20, 2017
Creator: Wang, Quanliang; Xiao, Shengling; Shi, Sheldon Q. & Cai, Liping
Object Type: Article
System: The UNT Digital Library
Effect of surfactants on pressure-sensitivity of carbon nanotube filled cement mortar composites (open access)

Effect of surfactants on pressure-sensitivity of carbon nanotube filled cement mortar composites

In this article, the pressure-sensitivity of CNT filled cement mortar composites with different concentrations of MWNT and different surfactants is investigated under repeated loading and impulsive loading, respectively. Experimental results indicate that the response of the electrical resistance of composites with NaDDBS to external force is more stable and sensitive than that of composites with SDS. Therefore, NaDDBS has higher efficiency than SDS for the dispersion of MWNT in cement mortar, and it is an effective surfactant for fabricating MWNT filled cement mortar composites with superior pressure-sensitivity.
Date: November 6, 2014
Creator: Han, Baoguo & Yu, Xun
Object Type: Article
System: The UNT Digital Library
Effects of Carbonization Temperature and Component Ratio on Electromagnetic Interference Shielding Effectiveness of Woodceramics (open access)

Effects of Carbonization Temperature and Component Ratio on Electromagnetic Interference Shielding Effectiveness of Woodceramics

This article explores the effects of carbonization temperature and mass ratio of wood/resin on electromagnetic interference, shielding effectiveness, and morphology of woodceramics.
Date: July 2, 2016
Creator: Tao, Yubo; Li, Peng & Shi, Sheldon Q.
Object Type: Article
System: The UNT Digital Library
Electrical and Thermal Conductivity of Polylactic Acid (PLA)-Based Biocomposites by Incorporation of Nano-Graphite Fabricated with Fused Deposition Modeling (open access)

Electrical and Thermal Conductivity of Polylactic Acid (PLA)-Based Biocomposites by Incorporation of Nano-Graphite Fabricated with Fused Deposition Modeling

This article describes a study to improve the electrical and thermal conductivity of the polylactic acid/wood flour/thermoplastic polyurethane composites by Fused Deposition Modeling (FDM). The results showed that, when the addition amount of nano-graphite reached 25 pbw, the volume resistivity of the composites decreased to 10⁸ Ω·m, which was a significant reduction, indicating that the conductive network was already formed. It also had good thermal conductivity, mechanical properties, and thermal stability.
Date: March 22, 2019
Creator: Guo, Rui; Ren, Zechun; Bi, Hongjie; Xu, Min & Cai, Liping
Object Type: Article
System: The UNT Digital Library
Energy Conversion During Expansion of a Solid-Particle-Entrained Gas (open access)

Energy Conversion During Expansion of a Solid-Particle-Entrained Gas

This article describes pneumatic energy being converted into solid particle kinetic energy as a solid-particle-entrained gas that flows downward through a vertical nozzle. For the conditions studied, the solid particles serve as a heat exchange medium to enable a gas expansion that is nearly isothermal. Also, the kinetic energy associated with the two-phase fluid is predominantly that associated with subsonic solid-particle motion. The kinetic energy of the solid particles is converted into other forms using a low-speed turbine. A theoretical description of the process is presented, and the initiation of an experimental effort to study the process is described.
Date: January 10, 2013
Creator: Ordonez, Carlos A.; Weathers, Duncan L. & Traum, Matthew J.
Object Type: Article
System: The UNT Digital Library
Evaluation of Anthropogenic Air Emissions from Marine Engines in a Coastal Urban Airshed of Texas (open access)

Evaluation of Anthropogenic Air Emissions from Marine Engines in a Coastal Urban Airshed of Texas

This article provides a brief description of the adopted methodology for estimating anthropogenic emission estimation of ocean going vessels and barges.
Date: April 2, 2013
Creator: Farooqui, Zuber M.; John, Kuruvilla & Sule, Neelesh
Object Type: Article
System: The UNT Digital Library

An Evaluation of the Correlation Between Shale Gas Development and Ozone Pollution within the Barnett Shale Region

Presentation for the 2014 Fracturing Impacts and Technologies Conference. This presentation discusses an evaluation of the correlation between shale gas development and ozone pollution within the Barnett Shale region.
Date: September 4, 2014
Creator: Ahmadi, Mahdi & John, Kuruvilla
Object Type: Presentation
System: The UNT Digital Library

Evaluation of Three Major Emission Sources on DFW Ozone Level Using Photochemical Modeling

Poster for the 2015 University of North Texas (UNT) Graduate Exhibition. This poster discusses the evaluation of three major emission sources on the Dallas-Fort Worth ozone levels using photochemical modeling.
Date: March 7, 2015
Creator: Ahmadi, Mahdi & John, Kuruvilla
Object Type: Poster
System: The UNT Digital Library
Evaluation of Uniformity of Bamboo Bundle Veneer and Bamboo Bundle Laminated Veneer Lumber (BLVL) (open access)

Evaluation of Uniformity of Bamboo Bundle Veneer and Bamboo Bundle Laminated Veneer Lumber (BLVL)

In this article the density uniformity and mechanical properties of bamboo bundle veneers were systematically evaluated by the combination of light transmittance and mechanical stiffness. It was found that the number of broomings, dippings, and high-temperature heat treatments had different effects on the bamboo bundle veneers. On this basis, the uniformity of the density and mechanical properties of the bamboo scrimber (BS) that underwent hybrid paving, and the bamboo bundle laminated veneer lumber (BLVL), were analyzed.
Date: October 19, 2019
Creator: Zhou, Haiying; Wei, Xin; Smith, Lee M.; Wang, Ge & Chen, Fuming
Object Type: Article
System: The UNT Digital Library
Fabrication of Wood-Rubber Composites Using Rubber Compound as a Bonding Agent Instead of Adhesives (open access)

Fabrication of Wood-Rubber Composites Using Rubber Compound as a Bonding Agent Instead of Adhesives

This article describes fabricating wood-rubber composites using rubber processing to improve water resistance and mechanical properties.
Date: June 14, 2016
Creator: Shao, Dongwei; Xu, Min; Cai, Liping & Shi, Sheldon Q.
Object Type: Article
System: The UNT Digital Library
Feasibility Study of Compaction and Sintering of Commercially Pure Titanium using Friction Stir Processing (open access)

Feasibility Study of Compaction and Sintering of Commercially Pure Titanium using Friction Stir Processing

This article explores the possibility of decreasing the number of steps required in the manufacturing of a product using the powder metallurgy technique.
Date: May 22, 2018
Creator: Fortier, Aleksandra; Kumar, Nilesh; Komarasamy, Mageshwari & Mishra, Rajiv
Object Type: Article
System: The UNT Digital Library
A High-Precision Micropipette Sensor for Cellular-Level Real-Time Thermal Characterization (open access)

A High-Precision Micropipette Sensor for Cellular-Level Real-Time Thermal Characterization

This article reports the development of a novel glass micropipette thermal sensor fabricated in a cost-effective manner.
Date: September 13, 2011
Creator: Shrestha, Ramesh; Choi, Tae-Youl; Chang, Wonseok & Kim, Donsik
Object Type: Article
System: The UNT Digital Library