Application of a Thermoplastic Polyurethane/Polylactic Acid Composite Filament for 3d-Printed Personalized Orthosis (open access)

Application of a Thermoplastic Polyurethane/Polylactic Acid Composite Filament for 3d-Printed Personalized Orthosis

Article exploring a suitable material for designing and fabricating personalized, cost-effective and bio-degradable orthoses. A finger orthosis was chosen as an example to explore a suitable material, personalized design method, and fabrication with a fuse-deposition-modeling (FDM) open-source 3D printer. Thermoplastic polyurethane (TPU)/polylactic acid (PLA) composite filaments were explored for 3D printing.
Date: February 2019
Creator: Tao, Yubo; Shao, Jingjiao; Li, Peng & Shi, Sheldon
Object Type: Article
System: The UNT Digital Library
Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles (open access)

Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles

Article investigating a non-conductive sensor textile as a viable solution for corrosion in underground and submerged steel pipes. The results offer a new option for sub-surface corrosion sensing using low cost, easily fabricated sensor textiles.
Date: May 28, 2020
Creator: Chowdhury, Tonoy; D'Souza, Nandika Anne, 1967-; Ho, Yee-Hsien; Dahotre, Narendra B. & Mahbub, Ifana
Object Type: Article
System: The UNT Digital Library
Plasmon-resonance emission tailoring of “origami” graphene-covered photonic gratings (open access)

Plasmon-resonance emission tailoring of “origami” graphene-covered photonic gratings

Article focusing on the modification of optical properties through folding, or “origami,” of graphene covering a plasmonic metal channel grating. This work is especially critical to understanding tailored deep plasmon emission from geometrically-modulated conducting sheets such as graphene.
Date: July 16, 2020
Creator: Araki, Ken & Zhang, Richard Z.
Object Type: Article
System: The UNT Digital Library
A New Cable-Less Seismograph with Functions of Real-Time Data Transmitting and High-Precision Differential Self-Positioning (open access)

A New Cable-Less Seismograph with Functions of Real-Time Data Transmitting and High-Precision Differential Self-Positioning

This article developed a new cable-less seismograph system, which can transmit seismic data in real-time and automatically perform high-precision differential self-positioning. Combining the ZigBee technology with the high-precision differential positioning module, this new seismograph system utilized the wireless personal area network (WPAN) and real-time kinematic (RTK) technologies to improve its on-site performances and to make the field quality control (QC) and self-positioning possible. With the advantages of low-cost, good scalability, and good compatibility, the proposed new cable-less seismograph system can improve the field working efficiency and data processing capability. It has potential applications in noise seismology and mobile seismic monitoring.
Date: July 19, 2020
Creator: Liu, Kang; You, Qingyu; Wang, Juan; Xu, Xiqiang; Shi, Pengcheng; Dai, Kaoshan et al.
Object Type: Article
System: The UNT Digital Library
Extended CT Void Analysis in FDM Additive Manufacturing Components (open access)

Extended CT Void Analysis in FDM Additive Manufacturing Components

This article provides an extended analysis of void shape by means of X-ray computed tomography (CT) applied to fused deposition modeling (FDM) samples. Furthermore, a relation between the tensile mechanical properties and digital void measurements is established. The results lead to the formulation of a novel criterion that predicts the mechanical behavior of AM components.
Date: July 26, 2020
Creator: Hernandez-Contreras, Adriana; Ruiz-Huerta, Leopoldo; Caballero-Ruiz, Alberto; Moock, Verena & Siller Carrillo, Héctor Rafael
Object Type: Article
System: The UNT Digital Library
Study on emission spectral lines of hematite and magnetite for purity’s differentiation (open access)

Study on emission spectral lines of hematite and magnetite for purity’s differentiation

Article proposes using emission spectra to investigate the purity of hematite (α-Fe₂O₃) and magnetite (Fe₃O₄).
Date: October 22, 2020
Creator: Manzo, Maurizio; Ahmed, Hossain & Nasrazadani, Seifollah
Object Type: Article
System: The UNT Digital Library
Sodium Lignosulfonate Modified Polystyrene for the Removal of Phenol from Wastewater (open access)

Sodium Lignosulfonate Modified Polystyrene for the Removal of Phenol from Wastewater

Article synthesizing an eco-friendly and novel water treatment material using sodium lignosulfonate modified polystyrene (SLPS), which can be used to eliminate phenols in aqueous solution. Results show that SLPS displayed a great potential for eliminating phenol from polluted water as a kind of novel and effective adsorbent.
Date: October 27, 2020
Creator: Yang, Keyan; Xing, Jingchen; Chang, Jianmin; Gu, Fei; Li, Zheng; Huang, Zhenhua et al.
Object Type: Article
System: The UNT Digital Library
Characterization of Soft Tooling Photopolymers and Processes for Micromixing Devices with Variable Cross-Section (open access)

Characterization of Soft Tooling Photopolymers and Processes for Micromixing Devices with Variable Cross-Section

Article characterizing an assortment of photopolymers and stereolithography processes to produce 3D-printed molds and polydimethylsiloxane (PDMS) castings of micromixing devices. The study shows that 3D-printed soft tooling can provide other benefits such as multiple cross-sections and other potential layouts on a single mold.
Date: September 29, 2020
Creator: Martínez-López, J. Israel; Cervantes, Héctor Andrés Betancourt; Iturbe, Luis Donaldo Cuevas; Vázquez, Elisa; Naula, Edisson A.; Martínez López, Alejandro et al.
Object Type: Article
System: The UNT Digital Library
Hollow Mesoporous Microspheres Coating for Super-Hydrophobicity Wood with High Thermostability and Abrasion Performance (open access)

Hollow Mesoporous Microspheres Coating for Super-Hydrophobicity Wood with High Thermostability and Abrasion Performance

Article investigating the formation of hydrophobic layers on wood surface without breaking the wood’s original structure. Results suggested that the nano and micron hollow mesoporous microsphere coating was an effective method to fabricate extremely hydrophobic wood products.
Date: November 29, 2020
Creator: Yang, Rui; Zuo, Shida; Song, Beibei; Mao, Haiyan; Huang, Zhenhua; Wu, Yingji et al.
Object Type: Article
System: The UNT Digital Library
Novel Terahertz Spectroscopy Technology for Crystallinity and Crystal Structure Analysis of Cellulose (open access)

Novel Terahertz Spectroscopy Technology for Crystallinity and Crystal Structure Analysis of Cellulose

This article probes the absorption peak of wood cellulose, microcrystalline cellulose, wood nano cellulose, and cotton nano cellulose in the terahertz band to calculate the crystallinity, and the result compared with XRD and FT-IR analysis.
Date: December 22, 2020
Creator: Yang, Rui; Dong, Xianyin; Chen, Gang; Lin, Feng; Huang, Zhenhua; Manzo, Maurizio et al.
Object Type: Article
System: The UNT Digital Library
A review on the modeling and validation of biomass pyrolysis with a focus on product yield and composition (open access)

A review on the modeling and validation of biomass pyrolysis with a focus on product yield and composition

Article reviewing the modeling and verification of products derived from biomass pyrolysis and discussing the possible solutions towards more accurate modeling of biomass pyrolysis.
Date: March 1, 2021
Creator: Xia, Changlei; Cai, Liping; Zhang, Haifeng; Zuo, Lei; Shi, Sheldon & Lam, Su Shiung
Object Type: Article
System: The UNT Digital Library
Pb(ii) adsorption from aqueous solution by an aluminum-based metal organic framework–graphene oxide nanocomposite (open access)

Pb(ii) adsorption from aqueous solution by an aluminum-based metal organic framework–graphene oxide nanocomposite

This article is motivated by the promise of emerging nanocomposites and reports for the first time the adsorption performance of an aluminum-based MOF (MIL-53(Al)) and GO nanocomposite for Pb(II) removal from aqueous solutions.
Date: March 22, 2021
Creator: Chowdhury, Tonoy; Zhang, Lei; Zhang, Junqing & Aggarwal, Srijan
Object Type: Article
System: The UNT Digital Library
Branching of Titanium Nanorods (open access)

Branching of Titanium Nanorods

This article reports that Ti nanorod branching occurs at a low homologous temperature of 0.28 based on physical vapor deposition and characterizations using electron microscopy and X-ray diffraction. The insight into conditions for branching, together with the determination of the morphology and crystal orientation of the branches, lay the foundation for further studies of branching mechanisms and driving force.
Date: April 22, 2021
Creator: Yussuf, Nosirudeen Abayomi & Huang, Hanchen
Object Type: Article
System: The UNT Digital Library
Effect of amorphous cellulose on the deformation behavior of cellulose composites: molecular dynamics simulation (open access)

Effect of amorphous cellulose on the deformation behavior of cellulose composites: molecular dynamics simulation

This article is a study aimed at predicting and enhancing the properties of the blend, as well as exploring the mechanism, of a polylactic acid (PLA)/amorphous cellulose composite system through molecular characterization. The static properties of the amorphous cellulose/PLA blend model and the mechanical response of the material under uniaxial tension were studied by molecular dynamics simulation to establish the structure–property relationship.
Date: June 8, 2021
Creator: Ren, Zechun; Guo, Rui; Zhou, Xinyuan; Bi, Hongjie; Jia, Xin; Xu, Min et al.
Object Type: Article
System: The UNT Digital Library
Theories and analyses of functionally graded circular plates (open access)

Theories and analyses of functionally graded circular plates

This article presents the governing equations and analytical solutions of the classical and shear deformation theories of functionally graded axisymmetric circular plates.
Date: June 12, 2021
Creator: Reddy, J. N.; Ruocco, Eugenio; Loya, Jose Antonio & Neves, Ana M. A.
Object Type: Article
System: The UNT Digital Library
Low-Cost Reliable Corrosion Sensors Using ZnO-PVDF Nanocomposite Textiles (open access)

Low-Cost Reliable Corrosion Sensors Using ZnO-PVDF Nanocomposite Textiles

This article investigates the reliability and effectiveness of nonwoven zinc(II) oxide-polyvinylidene fluoride (ZnO-PVDF) nanocomposite fiber textiles as an embedded corrosion sensor using an accelerated thermal cyclic method paired to electrochemical impedance spectroscopy (EIS). Results suggest that the flexible sensor is reliable at both monitoring the corrosion and acting as a corrosion barrier.
Date: June 17, 2021
Creator: Chowdhury, Tonoy; D'Souza, Nandika Anne, 1967- & Dahotre, Narendra B.
Object Type: Article
System: The UNT Digital Library
Characterize traction–separation relation and interfacial imperfections by data-driven machine learning models (open access)

Characterize traction–separation relation and interfacial imperfections by data-driven machine learning models

This article combines machine learning (ML), finite element analysis (FEA), and empirical experiments to develop data-driven models that characterize interfacial mechanical properties precisely. It also provides a code package containing trained ML models, allowing other researchers to establish T–S relations for different material interfaces.
Date: July 12, 2021
Creator: Ferdousi, Sanjida; Chen, Qiyi; Soltani, Mehrzad; Zhu, Jiadeng; Cao, Pengfei; Choi, Wonbong et al.
Object Type: Article
System: The UNT Digital Library
Developing a cylindrical-type wireless high temperature pressure sensor for rocket propulsion system test (open access)

Developing a cylindrical-type wireless high temperature pressure sensor for rocket propulsion system test

Data management plan for the grant "Developing a cylindrical-type wireless high temperature pressure sensor for rocket propulsion system test."
Date: 2021-09-01/2022-08-31
Creator: Zhang, Haifeng
Object Type: Text
System: The UNT Digital Library
The Influence of Aortic Valve Hemodynamics and LVAD on bio-transport processes in Calcific Aortic Valve Disease (open access)

The Influence of Aortic Valve Hemodynamics and LVAD on bio-transport processes in Calcific Aortic Valve Disease

Data management plan for the grant "The Influence of Aortic Valve Hemodynamics and LVAD on bio-transport processes in Calcific Aortic Valve Disease." One of the most common valvular heart diseases is the development of calcific aortic valve (CAV). The goal of this research is to understand the transport and near-wall accumulation of Low-Density Lipoprotein (LDL), which play a key role in the CAV development, with and without altered transvalvular pressure gradient due to LVADs. This will be achieved by developing the first computational model of biochemical transport near the highly deforming aortic valve, in which the hemodynamics and LDL mass transport are coupled with the biomechanical response of the valve, using a FSI framework formed around an innovative supreme immersed boundary (SIB) method.
Date: 2021-09-01/2024-08-31
Creator: Sadat-Hosseini, Hamid
Object Type: Text
System: The UNT Digital Library
Multi-Modal Surface Acoustic Wave Sensing System for Pressure and Temperature monitoring of Spent Fuel Canisters (open access)

Multi-Modal Surface Acoustic Wave Sensing System for Pressure and Temperature monitoring of Spent Fuel Canisters

Data management plan for research material for the grant "Multi-modal Surface Acoustic Wave Sensing System for Pressure and Temperature monitoring of Spent Fuel Canisters." This project is a collaboration of ​University of North Texas, Oak Ridge National Laboratory, and National Energy Technology Laboratory to develop a multi-modal wireless passive SAW (Surface Acoustic Wave) sensor array, which are deployed on the outside surface of stainless steel canisters used for nuclear waste, to monitor the strain of the canister and thus determine the inside pressure to ensure safety and security. In addition, the SAW strain sensor could also measure the surface temperature and potentially monitor helium gas leaks.​
Date: 2021-10-01/2024-09-30
Creator: Zhang, Haifeng; Ramuhalli, Pradeep; Rathod, Vivek; Devkota, Jagannath & Buric, Michael P.
Object Type: Text
System: The UNT Digital Library
Establishing a Journey of Inclusion, Identity and Intersectionality through Guided Pathways to Enhance Latinx Success in Engineering and Computer Science (open access)

Establishing a Journey of Inclusion, Identity and Intersectionality through Guided Pathways to Enhance Latinx Success in Engineering and Computer Science

Data management plan for the grant, "Establishing a Journey of Inclusion, Identity and Intersectionality through Guided Pathways to Enhance Latinx Success in Engineering and Computer Science." This project will bring together the University of North Texas (UNT) and North Central Texas College (NCTC) to decrease the time to graduation for transfer students in engineering and computer science (ECS) and better meet the needs of Latinx students. Three research questions will guide the project efforts. 1) How do Latinx students navigate the engineering fields at an HSI and how do their opportunities and experiences at an HSI relate to their outcomes? 2) How do faculty and staff incorporate Latinx students’ collective cultural wealth into their curricular and co-curricular programs? 3) How do the community college experiences of Latinx students inform their pathways through engineering and computer science programs at an HSI? The project will disseminate a collection of best practices arising from their collaborative effort that can serve as a model for partnerships between community colleges and universities designed to increase representation of the Latinx community in the engineering and computer science workforce.
Date: 2021-10-15/2024-09-30
Creator: D'Souza, Nandika Anne, 1967-; Quintanilla, John; Huffman, Debbie; Siller Carrillo, Héctor Rafael & Ro, Hyun
Object Type: Text
System: The UNT Digital Library
The hygroscopicity of moso bamboo (Phyllostachys edulis) with a gradient fiber structure (open access)

The hygroscopicity of moso bamboo (Phyllostachys edulis) with a gradient fiber structure

This article studies the hygroscopicity of moso bamboo (Phyllostachys edulis) with a gradient fiber structure assessed by a dynamic vapor sorption (DVS) apparatus and fitted with a Haillwood–Horrobin (H–H) model. The effects of the chemical composition, gradient fiber structure, and mesopore structure of the bamboo were also investigated. The results demonstrate that the hygroscopicity of bamboo gradually increases from the outer to the inner layer along the thickness of the culm wall, which is related to the gradient distribution of the fibers. The structure–function relationships between the chemical composition, multi-scale structure, and hygroscopicity identified in this study provide a theoretical basis for bamboo drying and storage technology, as well as the processing and application of bamboo fiber-based composites.
Date: October 15, 2021
Creator: Wei, Xin; Wang, Ge; Smith, Lee M. & Jiang, Huan
Object Type: Article
System: The UNT Digital Library
A Computational Study on the Aeroacoustics of a Multi-Rotor Unmanned Aerial System (open access)

A Computational Study on the Aeroacoustics of a Multi-Rotor Unmanned Aerial System

Article studying the noise generated by a quadrotor biplane unmanned aerial system (UAS) for various conditions in terms of the UAS pitch angle, propellers rotating velocity (RPM), and the UAS speed to understand the physics involved in its aeroacoustics and structure-borne noise.
Date: October 18, 2021
Creator: Heydari, Morteza; Sadat Hosseini, Seyed Hamid & Singh, Rajneesh
Object Type: Article
System: The UNT Digital Library
Bayesian Rate Ratio Effect Size for Count Data in Single Case Experimental Designs captions transcript

Bayesian Rate Ratio Effect Size for Count Data in Single Case Experimental Designs

Video recording of Dr. Prathiba Natesan Batley's presentation, "Single Case Design: Toward Precision Medicine." It introduces single case experimental designs (SCEDs) and Bayesian Rate Ratio (BRR) in SCEDs, and illustrate the performance of BRR in real data and in simulation. It was presented at the Transdisciplinary Ancestral Genomic Research Investigations (TAGRI) II Conference held online November 5-6, 2021.
Date: November 5, 2021
Creator: Natesan Batley, Prathiba
Object Type: Video
System: The UNT Digital Library