Search Results - Environmental Sciences

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A cascading, dual-frame, motion-tracking estimator for velocity-denied mobile robots
Cascading, Dual-Frame, Motion-Tracking Estimator for Velocity-Denied Mobile RobotsA novel state estimation algorithm to estimate position and velocity of any dynamic in motion using only a low-cost GNSS and IMU sensor.Case ID20/0031BackgroundTo traverse an environment, autonomous mobile robots require a robust navigation system that computes the position...
Published: 6/10/2020   |   Inventor(s): Brennan Yamamoto, A. Zachary Trimble
Keywords(s):  
Category(s): Engineering, Environmental Sciences, Energy, Ocean Sciences, Power, Transportation
Membraneless Method for Electricity Generation from Salinity Gradients
Membraneless Method for Generating Electricity from Salinity GradientsCase ID19/0041BackgroundThe blue energy, i.e. the Gibbs energy from mixing seawater and river water, is a promising source of clean energy. Pressure-retarded osmosis (PRO) and reverse electrodialysis (RED) are by far the most successful methods for extracting such energy, although...
Published: 7/11/2019   |   Inventor(s): Tianwei (david) Ma, Jian (Jimmy) Yu
Keywords(s): Energy
Category(s): Energy, Engineering, Environmental Sciences
Ambient Energy Harvesting Device with Charge-Carrying Movable Electrode
Ambient Energy Harvesting Device with Charge-Carrying Movable ElectrodeCase ID:01120Background Advances in low-power electronics and distributed systems have generated interest in small-scale power supply systems that harness energy from ambient sources. Low-power and distributed systems have also added to the portability of electronic devices, lessened...
Published: 5/21/2019   |   Inventor(s): Tianwei (david) Ma, Enze Ma, Jian (Jimmy) Yu
Keywords(s):  
Category(s): Energy, Engineering, Environmental Sciences
Long Range Remote Chemical Detection Using Compact Spectroscopy System and Low Laser Pulse Energy
Remote detection of chemicals is highly desirable for homeland security, environmental and NASA planetary exploration programs. Researchers at the University of Hawaii have designed a long range remote chemical detection system that significantly improves upon current capabilities in this field. The technology combines Raman + LIBS spectroscopy into...
Published: 1/22/2018   |   Inventor(s): Anupam Misra, Tayro Acosta-Maeda, John Porter
Keywords(s):  
Category(s): Engineering, Environmental Sciences, Optics
A combined instrument for Raman and LIBS (Laser-induced breakdown) spectrometry, utilizing a single laser source and single spectrograph
Scientists at the Hawaii Institute of Geophysics & Planetology (HIGP) have developed a system which can perform both Raman spectroscopy and LIBS (Laser-induced breakdown spectroscopy) using a single laser source, a spectrograph equipped with a multichannel detector. Raman spectroscopy provides the molecular vibrational spectra and is widely used...
Published: 1/25/2011   |   Inventor(s): Anupam Misra, Shiv Sharma, Paul Lucey
Keywords(s):  
Category(s): Sensors, Chemistry, Environmental Sciences
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