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131 Matching Results
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Seasonal variations of biogeochemical matter export along the Langtang-Narayani river system in central Himalaya
Article describes study in which weathering and suspended matter fluxes of the Langtang Narayani river system in central Nepal Himalaya were investigated at 16 stations for one year, based on monthly water sampling in the lower reaches and bi-monthly in higher elevation areas, to determine temporal variations of weathering fluxes along an elevation profile between 169 and 3989 m asl.
Date:
July 7, 2018
Creator:
Bhatt, Maya P.; Hartmann, Jens & Acevedo, Miguel F.
Object Type:
Article
System:
The UNT Digital Library
Electrode and electrolyte configurations for low frequency motion energy harvesting based on reverse electrowetting
This article explores various combinations of electrolyte concentrations, dielectrics, and dielectric thicknesses to generate maximum output power employing REWOD energy harvester with the objective of implementing a fully self-powered wearable sensor.
Date:
March 3, 2021
Creator:
Adhikari, Pashupati R.; Tasneem, Nishat Tarannum; Reid, Russell C. & Mahbub, Ifana
Object Type:
Article
System:
The UNT Digital Library
FY2021 DARPA YFA: Next generation of wireless power transfer network of Unmanned Aircraft System (UAS) using electromechanical beamforming
Data management plan for the grant "FY2021 DARPA YFA: Next generation of wireless power transfer network of Unmanned Aircraft System (UAS) using electromechanical beamforming." Research aiming to develop the next generation of wireless power transfer (WPT) network that is scalable, safe, and efficient and can be deployed in a UAS by incorporating waveform engineering, electromechanical beamforming, integrated phased-array antenna, and transmitter (TX)/receiver (RX) co-design. This project aims to reveal the fundamental understanding of the energy sphere formation in a 3D space using UAVs as a case study. Although interests in radiative (far-field) WPT using beamforming has been growing rapidly because of its capability to energize a large number of autonomous devices, most of these works are still in the theoretical phase without any practical implementation. This project aims to implement a robust beamforming network using a bottom-up approach (from the antenna to the inter-connected network) that is highly important for addressing the challenges associated with a dynamically changing environment.
Date:
2021-08-02/2023-08-01
Creator:
Mahbub, Ifana
Object Type:
Text
System:
The UNT Digital Library
Carbon Nanomaterials for Optical Absorber Applications
Article describing optical absorbers based on vertically aligned multi-walled carbon nanotubes (MWCNTs), synthesized using electric-field assisted growth that show an ultra-low reflectance, 100X lower compared to the benchmark, a diffuse metal black - Au-black - from wavelength λ ~ 350 nm – 2500 nm.
Date:
December 28, 2011
Creator:
Kaul, Anupama; Coles, James; Megerian, Krikor; Eastwood, Michael; Green, Robert; Pagano, Thomas et al.
Object Type:
Article
System:
The UNT Digital Library
Eficiência de um sistema piloto de dessalinização de água salobra
Article describes study which sought to evaluate the efficiency of pilot water desalination system treating brackish water which was obtained mixing fresh water and seawater up to reach 1,500 mg L-1 of total dissolved solids (TDS) concentration.
Date:
March 16, 2020
Creator:
Almeida, Juliano Penteado de; Kummer, Ana Carolina Barbosa; Carranza, Gabriel; Campos, Luiza Cintra; Széliga, Marcos Rogério; Acevedo, Miguel F. et al.
Object Type:
Article
System:
The UNT Digital Library
Dinámica y Control de Malezas Acuáticas en Algunas Islas de la Zona Protegida Delta del Río Orinoco
Report on the dynamics and control of aquatic weeds in some islands of the protected area of the Orinoco Delta.
Date:
September 1983
Creator:
Acevedo, Miguel F.; Díaz-Miranda, David & Elena Morros, María
Object Type:
Report
System:
The UNT Digital Library
Informacion Ambiental y Ecologica Sobre los Llanos del Rio Orinoco: Proyecto Orinoco-Apure: Seccion 3
This report is section three of a study of the Llanos del Rio Orinoco. The aim of the study is to establish relationships between the characteristics of plant communities of the Central Plains of Venezuela and geomorfogenetica and pedogenic evolution during the Quaternary.
Date:
June 1985
Creator:
Acevedo, Miguel F.; Silva, Juan F. & Raventós, José
Object Type:
Report
System:
The UNT Digital Library
Informacion Ambiental y Ecologica Sobre los Llanos del Rio Orinoco: Proyecto Orinoco-Apure: Secciones 1 y 2
This report includes sections one and two of a study of the Llanos del Rio Orinoco. The aim of this study is to establish relationships between the characteristics of plant communities of the Central Plains of Venezuela and geomorfogenetica and pedogenic evolution during the Quaternary.
Date:
June 1985
Creator:
Acevedo, Miguel F.; Silva, Juan F. & Raventós, José
Object Type:
Report
System:
The UNT Digital Library
PAN-EARTH Sub-Saharan Africa Workshop Report
Report on the PAN-EARTH Sub-Saharan Africa Workshop. This workshop focused on the effects of global climate changes on the agriculture and ecology of the countries of sub-Saharan Africa.
Date:
September 1989
Creator:
Bezuneh, Taye; Harwell, Mark A.; Menyonga, Joseph Mufu; Acevedo, Miguel F.; Ackerman, Thomas P.; Aho, Nestor et al.
Object Type:
Report
System:
The UNT Digital Library
Algunos criterios para el establecimiento de prioridades de investigacion en el eje fluvial Orinoco-Apure
This report reflects the efforts of the Office of the Orinoco-Apure Project to define an environmental policy based research delineating priority areas of research and identification of potential environmental impacts of the project.
Date:
March 1984
Creator:
Acevedo, Miguel F.
Object Type:
Report
System:
The UNT Digital Library
Biocompatible, large-format, inkjet printed heterostructure molybdenum disulfide-graphene photodetectors on conformable substrates
This article describes an inkjet printed, biocompatible, heterostructure photodetector that was constructed using inks of photo-active molybdenum disulfide (MoS2) and electrically conducting graphene which facilitated charge collection of the photocarriers. The importance of such devices stems from their potential utility in age-related-macular degeneration, which is a condition where the photosensitive retinal tissue degrades with aging, eventually compromising vision. The absence of effective therapeutic remedies for patients with this disorder has motivated the development of such devices to restore some degree of visual function.
Date:
September 7, 2017
Creator:
Hossain, Ridwan F.; Deaguero, Isaac G.; Boland, Thomas & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Using Wireless Sensor Network Controls to monitor an indoor Aquaponic System
This presentation discusses research on aquaponic control systems. Researchers built a simple automatic control of an aquaponic ecosystem.
Date:
2013
Creator:
Guerrero, Jose; Edwards, Fern; Wan, Yan & Sheth, Vardhman
Object Type:
Presentation
System:
The UNT Digital Library
Three-Dimensional Printed, Dual-Band, Dual-Circularly Polarized Antenna Array Using Gap Waveguide Technology
Article proposes a gap waveguide (GW)-based 4 × 4 dual-band, dual-circularly polarized antenna array. The combination of dual-band, dual-circularly polarized capability, high gain, high efficiency, lightweight, low cost and compact size renders the proposed design a potential candidate for commercial millimeter wave communication applications.
Date:
October 22, 2022
Creator:
Wu, Sifan; Li, Jianxing; Cao, Yuanxi; Yan, Sen; Xu, Kaida & Luyen, Hung
Object Type:
Article
System:
The UNT Digital Library
GPS: Rocket
This video discusses research on developing a rocket recovery system with sensor networks and wireless communication. The research team project was to develop a GPS/GSM based tracking system for the recovery of high power model rockets. This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
Date:
2013
Creator:
Gscheidle, Karl H.; Hardy, Debra; Kulle, Gregory; Bih, Michael & Acevedo, Miguel F.
Object Type:
Video
System:
The UNT Digital Library
G-DaM: A Distributed Data Storage with Blockchain Framework for Management of Groundwater Quality Data
Authors discuss their use of a distributed and decentralized architecture to store the statistics, perform double hashing, and implement access control through smart contracts to forecast groundwater availability. Their work demonstrates a modern and innovative approach combining Distributed Data Storage and Blockchain technologies to overcome traditional data sharing, and centralized storage, while addressing blockchain limitations.
Date:
November 11, 2022
Creator:
Vangipuram, Sukrutha L. T.; Mohanty, Saraju P.; Kougianos, Elias & Ray, Chittaranjan
Object Type:
Article
System:
The UNT Digital Library
Robotics: Cooperation of Autonomous Robots Using Bluetooth Communication
This poster discusses research on the cooperation of autonomous robots using Bluetooth communication. Researchers explore multi-agent NXT Robotics systems using a Bluetooth communication channel. This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
Date:
2013
Creator:
Freeman, Elizabeth; Bell, Jesse; Namuduri, Kamesh & Costilla, Omar
Object Type:
Poster
System:
The UNT Digital Library
System and Method for Multi-Residue Multivariate Data Compression
Patent relating to data compression.
Date:
April 1, 2013
Creator:
Garcia, Oscar N.; Fu, Shengli & Jaganathan Melaedavattil, Jyothy
Object Type:
Patent
System:
The UNT Digital Library
System, Method and Apparatus for Energizing Vehicle Brake Lights
Patent relating to the system, method and apparatus for energizing vehicle brake lights.
Date:
August 20, 2010
Creator:
Marlowe, Kenneth Adam; Cotanch, Bryan & Parker, James
Object Type:
Patent
System:
The UNT Digital Library
EGFET-Based Sensors for Bioanalytical Applications: A Review
This article provides a review of the state of the art focused on the development of biosensors and chemosensors based on extended-gate field-effect transistor within the field of bioanalytical applications.
Date:
November 20, 2018
Creator:
Pullano, Salvatore Andrea; Critello, Costantino Davide; Mahbub, Ifana; Tasneem, Nishat Tarannum; Shamsir, Samira; Islam, Syed Kamrul et al.
Object Type:
Article
System:
The UNT Digital Library
Cyber-Physical Systems Can Make Emergency Response Smart
This paper from the Humanitarian Technology: Science, Systems and Global Impact 2015 conference proceedings discusses the Smart Emergency Response System prototype built in the context of the SmartAmerica Challenge 2013-2014 by a team of nine organizations led by MathWorks.
Date:
July 7, 2015
Creator:
Zander, Justyna; Mosterman, Pieter J.; Padir, Taskin; Wan, Yan & Fu, Shengli
Object Type:
Paper
System:
The UNT Digital Library
Dual-Wavelength Terahertz Metasurfaces with Independent Phase and Amplitude Control at Each Wavelength
This article describes the design of a dual-wavelength achromatic metasurface-based deflector deflecting the incident wave to the same direction at two selected wavelengths, which has circumvented the critical limitation of strong wavelength dependence in the planar metasurface-based devices caused by the resonant nature of the plasmonic structures.
Date:
September 23, 2016
Creator:
Ding, Jun; Xu, Ningning; Ren, Han; Lin, Yuankun; Zhang, Weili & Zhang, Hualiang
Object Type:
Article
System:
The UNT Digital Library
Geometrical dependence of the low-frequency noise in superconducting flux qubits
Article reporting on a study of a series of 85 devices of vary design using a general method for directly measuring the low-frequency flux noise (below 10 Hz) in compound Josephson-junction superconducting flux qubits. The results support the hypothesis that local impurities in the vicinity of the qubit wiring are a key source of low-frequency flux noise in superconducting devices.
Date:
February 26, 2009
Creator:
Lanting, T.; Berkley, A. J.; Bumble, B.; Bunyk, P.; Fung, A.; Johansson, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Probing Noise in Flux Qubits via Macroscopic Resonant Tunneling
Article on the characterization of noise in a flux qubit using macroscopic resonant tunneling between the two lowest lying states of a bistable rf SQUID. Analysis of these results indicates that the dominant source of low energy flux noise in this device is a quantum mechanical environment in thermal equilibrium.
Date:
September 10, 2008
Creator:
Harris, R.; Johnson, M. W.; Han, S.; Berkley, A. J.; Johansson, J.; Bunyk, P. et al.
Object Type:
Article
System:
The UNT Digital Library
A Shannon-Theoretic Approach to the Storage–Retrieval Trade-Off in PIR Systems
Authors of the article consider the storage–retrieval rate trade-off in private information retrieval (PIR) systems using a Shannon-theoretic approach. Their focus is mostly on the canonical two-message two-database case, for which a coding scheme based on random codebook generation and the binning technique is proposed.
Date:
January 11, 2023
Creator:
Tian, Chao; Sun, Hua & Chen, Jun
Object Type:
Article
System:
The UNT Digital Library