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Ultra-high Photoresponsivity in Suspended Metal-Semiconductor-Metal Mesoscopic Multilayer MoS₂ Broadband Detector from UV-to-IR with Low Schottky Barrier Contacts
This article describes the performance of a multifaceted investigation comprising of atomic force microscopy (AFM0, photoluminescence (PL) and Raman spectroscopy to analyze the structural and chemical characteristics to help shed insights on the origins of the superior optoelectronic device performance.
Leaf spectra and weight of species in canopy, subcanopy, and understory layers in a Venezuelan Andean Cloud Forest
Article discussing leaf spectra and the weight of species in canopy, subcanopy, and understory layers in a Venezuelan Andean cloud forest.
A Network Control Theory Approach to Modeling and Optimal Control of Zoonoses: Case Study of Brucellosis Transmission in Sub-Saharan Africa
Article on a network control theory approach to modeling and optimal control of zoonoses and a case study of brucellosis transmission in sub-Saharan Africa.
Wildlife Monitoring
This presentation discusses research on solar powered wildlife monitoring systems. The goal of the project was to develop an off grid video system using solar power for collecting visual data of the burrowing owl roosting behavior in the West Texas region.
2013 Research Experience for Teachers - Robotics
Presentation for the 2013 Research Experiences for Teachers (RET) project. This presentation discusses a research project on robotics involving multi-sensor robotics and potential uses for robotic communication.
Rocket Recovery Systems for High Power Model Rocketry
This presentation discusses research on rocket recovery systems for high power model rocketry using Arduino microprocessors with GPS and GSM shields for tracking. This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
Indoor Air Quality: CO₂ Sensors and Demand Controlled Ventilation
This presentation discusses research on indoor air quality (IAQ) and building a small IAQ control system using Arduino microcontroller board and micro gas sensors (CO2, O3, etc.). This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
Stream Monitoring and Control Team
This presentation discusses research on multiple sensor clusters that monitor environmental health. The goal of the project was to create a series of sensor clusters, arranged into an array of nodes, that feeds key stream health data to an easily accessible database using an ad hoc wireless network.
Using Wireless Sensor Network to monitor and control an indoor Aquaponic System
This poster discusses research on using a wireless sensor network (WSN) node to monitor and remotely control various water parameters in an aquaponic system.
Demand Controlled Ventilation using CO2 Sensors in a Wireless Sensor Network [Poster]
Poster presented as part of the 2013 Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project. This poster discusses research on demand controlled ventilation using CO₂ sensors in a wireless sensor network.
Demand Controlled Ventilation using CO₂ Sensors in a Wireless Sensor Network
This report discusses research on demand controlled ventilation using CO₂ sensors in a wireless sensor network. The focus of this research project was to investigate Indoor Air Quality (IAQ) monitoring technologies, government regulations and policies, and best practices to improve IAQ. This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
Cooperation of Autonomous NXT Robots Using Bluetooth Wireless Technology
This report discusses research on cooperation of autonomous NXT robots using Bluetooth wireless technology. The research project consisted of using Bluetooth technology to coordinate movements between two agents. This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
GPS Tracking of High Power Model Rockets
Poster presented as part of the Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project. This poster discusses research on GPS/GSM based tracking systems for the recovery of high power model rockets.
GPS/GSM Based Tracking System for the Recovery of High Power Model Rockets
This report discusses research on GPS/GSM based tracking systems 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.
Bringing real world applications for wireless sensor networks into the classroom: Telemetric monitoring of water quality in an artificial stream [2013: Poster]
This poster discusses research on bringing real world applications for wireless sensor networks into the classroom in the context of telemetric monitoring of water quality in an artificial stream.
Solar Powered Security Systems to Monitor Wildlife
This poster discusses research on creating a solar powered wildlife monitoring system using a security system, Arduino, PIR motion sensor and solar panels with a battery bank.
Solar Powered PIR Security System to Monitor Wildlife
This poster discusses research on building a solar powered PIR security system to monitor wildlife. Researchers introduce the concept of off-grid wildlife video monitoring using a security system, a microcontroller, passive infrared motion sensor and the solar panels with a battery bank.
Impactos Potenciales de los Cambios Climaticos Globales en los Sistemas Agricolas y en los Ecosistemas Terrestres de Venezuela: Resultados Preliminares
Report on the potential impacts of global climate change in the farming systems and terrestrial ecosystems in Venezuela.
Complejo Hidroelectrico General Jose Antonio Paez: Sedimentos en el Embalse
This report is on a study to quantify the production of sediment created by erosion in the upper basin of the Rio Santo Domingo dam site and determine the magnitude of the problem of sedimentation in the "Hydroelectric Complex General Jose Antonio Paez" reservoir.
Taller de Trabajo sobre evaluación de los Efectos Ecológicos de los Cambios Climáticos Globales
This report discusses the Ecological Effects Assessment of Climatic changes in Venezuela Workshop, organized by the PAN-EARTH Project and the Centre for Ecology of the Venezuelan Institute for Scientific Research (IVIC). The main objective was the evaluation of the effects of climate changes on the main ecosystems in Venezuela using ecological models.
PAN-EARTH/FONAIAP Workshop on Crop Model Training and Calibration
This report discusses a PAN-EARTH / Fondo Nacional de Investigaciones Agropecuarias (FONAIAP) Workshop on Crop Model Training and Calibration.
Proyecto PAN-EARTH Estudio de Caso Venezuela: Informe de Actividades Octubre 1988 - Marzo 1990
This is the activity report for the PAN-EARTH Project Case Study Venezuela from October 1988 to March 1990.
PAN-EARTH Project: Summary of Annual Report 1989-1990
This report is a summary of the PAN-EARTH Project Annual Report from 1989-1990.
Reconfigurable Surface Plasmon Polariton Wave Adapter Designed by Transformation Optics
This article proposes a reconfigurable surface plasmon polariton (SPP) wave adapter designed by transformation optics, which can control the propagation of SPP waves on un-even surfaces.
Simultaneous Direct Holographic Fabrication of Photonic Cavity and Graded Photonic Lattice With Dual Periodicity, Dual Basis, and Dual Symmetry
This article demonstrates the digital, holographic fabrication of graded, super-basis photonic lattices with dual periodicity, dual basis, and dual symmetry.
A Cost-Effective Wireless Sensor Network System for Indoor Air Quality Monitoring Applications
This paper from the 9th International Conference on Future Networks and Communications, FNC 2014 conference proceedings presents a low-cost indoor air quality monitoring wireless sensor network system developed using Arduino, XBee modules, and micro gas sensors.
Indoor Propagation Modeling at 2.4 GHZ for IEEE 802.11 Networks
This paper discusses indoor propagation modeling.
Modelos de Simulación a Diferentes Escalas de la Dinámica del Bosque Tropical. Reserva Forestal Imataca. Sector Central.
Thesis submitted to the National Experimental University of Guayana as partial requirement for the degree of Master of Science in Environmental Science. This thesis discusses simulation models at different scales of tropical forest dynamics.
Proyecto Orinoco - Apure: Información sobre el Delta del Rio Orinoco y otros Sistemas Deltaicos Tropicales
Report for the Project Orinoco - Apure. This report discusses information on the Orinoco river delta and other deltaic tropical systems.
Proyecto Orinoco - Apure: Informacion ambiental y ecologica sobre los llanos del rio Orinoco. Seccion 3
Report for the Project Orinoco - Apure. This report discusses environmental and ecological information on the plains of the Orinoco river.
Venezuela Mini-Workshops Reports: Caracas and Merida, May 1989: National Problems Caused by Global Climate Change
Reports on Venezuela mini-workshops held in Caracas and Mérida in May 1989 on national problems caused by global climate change.
Resilient Supply Chain Ecosystem for Agile Manufacturing of Unmanned Aircraft Systems
Data management plan for the grant, "Resilient Supply Chain Ecosystem for Agile Manufacturing of Unmanned Aircraft Systems."
Habitat Quantity of Red-Cockaded Woodpecker Picoides Borealis (Aves: Piciformes: Picidae) in its Former Historic Landscape Near the Big Thicket Naitonal Preserve, Texas, USA
This article quantifies pine-forested habitat suitable for Red-cockaded Woodpecker in the former historic range of the species to assess the potential for possible re-colonization.
Comparison of Machine Learning Algorithms for Identifying Cancer Types
Poster for the 2014 MidSouth Computational Biology and Bioinformatics Society (MCBIOS) Annual Conference. This poster discusses a comparison of machine learning algorithms for identifying cancer types.
An Analysis of the Habitat of the Greater One-Horned Rhinoceros Rhinoceros Unicornis (Mammalia: Perissodactyla: Rhinocerotidae) at the Chitwan National Park, Nepal
This article uses geographic information systems and landscape-level data obtained from remote sensing sources to build a habitat suitability index model for the Greater One-horned Rhinoceros.
Scalable Fabrication of Natural-Fiber Reinforced Composites with Electromagnetic Interference Shielding Properties by Incorporating Powdered Activated Carbon
This article discusses preparing Kenaf fiber-polyester composites incorporated with powdered activated carbon (PAC) using the vacuum-assisted resin transfer molding(VARTM) process.
Taller de Trabajo Sobre Modelaje de Cultivos: Entrenamiento y Calibracion Informe
Report on a Modeling Crop and Climate Change workshop. The objectives of the workshop were: 1) train Venezuelan scientists in the use of agricultural models IBSNAT program (International Benchmark Sites Network for Agrotechnology Transfer), including discussions about their applicability and the acquisition of knowledge about the data needed for proper simulation and validation, 2) Calibrate the model of maize (CERES) for different cultivars and different regions of Venezuela using data from soil and climate corresponding to various tests, 3) Carry out model simulations under various climate scenarios to assess their potential effects on crops, 4) To strengthen the cooperation between users of IBSNAT models to make necessary tests to get a better database application thus facilitating validation and calibration of these models, and 5) To establish plans for future agricultural and meteorological research in the context of global climate change.
Sc3N@C80 and La@C82 doped graphene for a new class of optoelectronic devices
This is the Author Manuscript version of an article presenting high-performance hybrid graphene photodetectors prepared with endohedral fullerenes deposited on graphene using electrophoretic methods for the first time.
Inkjet printing of liquid-exfoliated, highly conducting graphene/poly(3,4 ethylenedioxythiophene):poly(styrenesulfonate) nanosheets for organic electronics
In this article, highly dispersive graphene inks are demonstrated by liquid-phase exfoliation of the bulk graphite crystal in the solvent N-methyl-2-pyrrolidone (NMP).
Investigation of structural morphology and electrical properties of graphene-C₆₀ hybrids
This article reports on the electrophoretic deposition of C₆₀ on graphene. The results suggest that graphene based C₆₀ structures are attractive as flexible transparent electrodes and are excellent electron accepting/charge transport materials for the construction of efficient photovoltaic devices.
Sol-gel synthesized indium tin oxide as a transparent conducting oxide with solution-processed black phosphorus for its integration into solar-cells
This article describes the synthesis of indium tin oxide (ITO) thin films using solgel processing with a mixture of InCl₃, methanol, and SnCl₂, where the solutions were spin coated onto glass substrates. The combined architecture of black phosphorus on ITO thin films shows promise in its use for transparent electronics, which can also serve as a stepping stone for future solar cell platforms.
Inks of dielectric h-BN and semiconducting WS₂ for capacitive structures with graphene
This article presents dispersions of WS₂ and h-BN using cyclohexanone and terpineol as the solvent to subsequently print prototype capacitive nanodevices.
Inkjet-printed MoS₂-based field-effect transistors with graphene and hexagonal boron nitride inks
This article reports the design, fabrication, and characterization of an all inkjet-printed field-effect transistor (FET).
Polydimethylsiloxane and polyisoprene-based graphene composites for strain-sensing
In this article, different composite materials have been developed and characterized for different applications in the health science field and as optoelectromechanical sensors.
Fabrication of wide-IF 200–300GHz superconductor–insulator–superconductor mixers with suspended metal beam leads formed on silicon-on-insulator
This article reports on a fabrication process that uses silicon-oninsulator (SOI) substrates and micromachining techniques to form wide-IF superconductor–insulator–superconductor (SIS) mixer devices that have suspended metal beam leads for rf grounding. Aside from a description of the fabrication process, electrical measurements of these Nb/Al–AlNₓ /Nb trilayer devices will also be presented.
Fabrication and characterization of inkjet-printed 2D perovskite optoelectronic devices
Article presents the large scale synthesis of solution-processed 2D (CH₃(CH₂)₃NH₃)₂(CH₃NH₃)ₙ − 1PbₙI₃ₙ + 1 (n = 2, 3, and 4) perovskites, a family of layered compounds with composition-tunable bandgap, where inkjet printing was used to fabricate heterostructure, flexible photodetector devices. The flexible, inkjet-printed perovskite 2D heterostructures have significant potential for optoelectronic devices, which can enable broad possibilities with compositional tunability and versatility of the organohalide perovskites.
3D-printed and injection molded polymer matrix composites with 2D layered materials
This article reports on a study where 2D TMDs (MoS₂ and WS₂) and the 3D allotrope of carbon and graphite were incorporated into acrylonitrile butadiene styrene (ABS) and polyethylene terephthalate glycol (PETG) matrices in order to form polymer matrix composites (PMCs). The multipronged analysis described in this study was motivated by the purpose to fuse together topics of low-cost, additive manufacturing with 2D layered materials, and studying their ensuing mechanical and tribological properties.
Simulación de la dinámica de un bosque tropical en los Llanos occidentales de Venezuela
Article discussing the simulation of the dynamics of a tropical forest in the Western Llanos of Venezuela.
Heterogeneidad estructural y lumínica del sotobosque de una selva nublada andina de Venezuela
Article discussing the understory of an Andean cloud forest in the Sierra Nevada National Park, Venezuela.
Relaciones alométricas y patrones de crecimiento para especies de árboles de la reserva forestal Imataca, Venezuela
Article discussing allometric relations and growth patterns for tree species in the Imataca Forest Reserve, Venezuela.
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