A5001429749- Oceanographic and Atmospheric Processes
- Underwater Acoustics Research
- Railway Systems and Energy Efficiency
- Underwater Vehicles and Communication Systems
- Lightning and Electromagnetic Phenomena
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- Thermal Analysis in Power Transmission
- Innovative Microfluidic and Catalytic Techniques Innovation
- Geophysical and Geoelectrical Methods
- Power Line Inspection Robots
- High voltage insulation and dielectric phenomena
- Advanced biosensing and bioanalysis techniques
- Belt Conveyor Systems Engineering
- Power Systems and Technologies
- Experimental Learning in Engineering
- Railway Engineering and Dynamics
- Underground infrastructure and sustainability
- Elevator Systems and Control
- Fluid Dynamics and Turbulent Flows
- Chalcogenide Semiconductor Thin Films
- Analytical Chemistry and Chromatography
- Magnetic Field Sensors Techniques
- Seismic Imaging and Inversion Techniques
- Electromagnetic Compatibility and Measurements
United States Air Force Research Laboratory
2023-2024
University of Washington Applied Physics Laboratory
1999-2023
UES (United States)
2023
University of South Carolina
2018-2022
Seattle University
2005-2019
University of Washington
1981-2018
United States Department of Agriculture
2010
Woods Hole Oceanographic Institution
1978-2005
Electric Power Research Institute
1981-1993
We report a human-in-the-loop implementation of the multi-objective experimental design via Bayesian optimization platform (EDBO+) towards butylpyridinium bromide synthesis under continuous flow conditions. The algorithm simultaneously optimized reaction yield and production rate (or space-time yield) generated well defined Pareto front. versatility EDBO+ was demonstrated by expanding space mid-campaign increasing upper temperature limit. Incorporation techniques enabled improved control...
A freely failing current meter called the Absolute Velocity Profiler (AVP) is described. This profiler an expansion of a previously developed instrument, Electro-Magnetic (EMVP), with additional capability acoustic Doppler (AD) measurements to determine reference velocity for EM profiles. The AVP measures motional electric currents in sea and frequency shin bottom-scattered echoes. yield profile horizontal components relative depth-independent velocity; AD absolute respect seafloor. obtained...
We developed an autonomous ocean profiling velocity and density float that provides exceptional vertical coverage temporal resolution to depths of 2000 m for deployments many years. Electrodes were added the exterior standard WRC APEX floats, electronics inside. The electrode voltages result from motion seawater instrument through Earth's magnetic field. Other systems included compass, tilt, CTD, GPS, Iridium (providing sampling/mission changes). Three EM-APEX floats deployed a C-130...
We report the first comprehensive study on purification of PbS quantum dots (QDs) using gel permeation chromatography (GPC). GPC enables efficient and repeatable separation unbound small molecules from QDs in a homogeneous solvent environment. This allows us to gain further insight into surface capping layer measure ligand density different sizes. find that oleate-capped are stable solution toluene after by with negligible free concentrations. However, larger-diameter reveals two oleate...
hogs (Sus scrofa) negatively impact the environment in most places around world where they have been introduced into wild. In many places, hog removal is essential to protect special habitats, particular, wetlands. This paper describes techniques developed for use adaptive management approaches enhance efforts Florida, as well methods evaluate economic impacts from management. A valuable tool that can be an easily applied index monitor feral activity track plots. method has effective...
This study examines the relative binding strength of a series thiolate ligands to surfaces zincblende CdSe/ZnS core/shell quantum dots (QDs) passivated by phosphonate under basic conditions in water means isothermal titration calorimetry (ITC). A labile hydrophilic intermediate, 2-aminoethylphosphonic acid (AEP), was introduced place native hydrophobic carboxylate produce water-soluble QDs and provide universal starting point for competitive anionic exchange reactions. We introduce...
An instrument has been developed that measures finescale velocity and vorticity in seawater based on the principles of motional induction. This instrument, electromagnetic meter (EMVM), components gradient Laplacian electrostatic potential field induced by motion through an applied magnetic field. The principal innovation described here is development a sensor for measuring small-scale vorticity. head consists strong NdFeB magnet, five-electrode array, low-noise preamplifiers, 20-Hz...
Recent successes using EM-APEX velocity profiling floats under sea ice (in an "ice contacting" mode which allows to measure draft accuracy a few centimeters after applying atmospheric pressure correction) have inspired innovative study of the seawater cavity floating shelf. We report here on recent (January 2018 through March 2019) experiment acoustically-tracked along with Seagliders survey distribution temperature, salinity, shear, and melt rates in Dotson Ice Shelf cavity. The 4 released...
This paper covers the design, assembly, and field testing of TOMCAT Component Evaluation Unit (CEU). is an acronym for Teleoperator Operations, Maintenance, Construction using Advanced Technology. The unit was developed in performance Phase 2 EPRI Project No. RP14967-1, "Remote Controlled Maintenance Device" system development program. objective this effort to fabricate, assemble, evaluate a remotely controlled manipulator maintenance repair overhead transmission lines based upon utilization...
This study addresses the colloidal stability of polymer-coated core/shell CdSe/CdxZn1–xS quantum dots (QDs) in presence l-glutathione (GSH) under neutral conditions by means photoluminescence (PL) and absorption spectroscopy. A reversible addition–fragmentation chain-transfer-mediated synthesis was employed to produce co-polymer ligands with different molecular weights block random sequences. Poly(ethylene glycol) sidechains were incorporated on a methacrylate backbone for solubility...
Colloidal quantum dots (QDs) are attractive fluorophores for bioimaging and biomedical applications because of their favorable tunable optoelectronic properties. In this study, the native hydrophobic ligand environment oleate-capped sphalerite CdSe/ZnS core/shell QDs was quantitatively exchanged with a set imidazole-bearing small-molecule ligands. Inductively coupled plasma-optical emission spectroscopy 1H NMR were used to identify quantify three different exchange processes: Z-type...
Results are presented of a project to confirm predictions magnetic fields remote from transmission distribution substation. The measurement data span the period June 1984 July 1988. Measurements field profiles around specific substation were made prior construction (1984), after was in service and loaded 80% capacity (1987), one year later (1988). results show correlation between theoretical measurements levels attributable >
The sharing of common corridors by electric power transmission lines, pipelines and rail-road facilities is becoming more commonplace. However, such corridor can result in undesired coupling electromagnetic energy from the lines to paralleling facilities. principal concerns are with respect both personnel safety equipment operational compatibility. Induced interfering voltages currents either magnetic or electrostatic induction line circuits. occur during normal steady-state operation system...
The performance of an expendable temperature and velocity profiler (XTVP) against several independent profilers is discussed. XTVP operates on the principles motional induction resulting from movement sea water through earth's magnetic field. induced electric currents are interpreted in terms generating distribution. Profile intercomparisons have shown capable measuring ocean (relative to unknown, depth offset velocity) within uncertainty 1 cm/s with 6 m vertical averaging for both east...
Benzylamine is an effective solvent for a stable, thiol-capped PbS QD ink. Diffusion-ordered NMR demonstrates 3-mercaptopropionic acid binding to the surface.
The sharing of common corridors by electric power transmission lines, pipelines and rail-road facilities is becoming more commonplace. However, such corridor can result in undesired coupling electromagnetic energy from the lines to paralleling facilities. principal concerns are with respect both personnel safety equipment operational compatibility. Induced interfering voltages currents either magnetic or electrostatic induction line circuits. occur during normal steady-state operation system...
We report the preparation of poly(ionic) polymer-wrapped single-walled carbon nanotube dispersions for chemiresistive methane (CH
Covalent organic frameworks were crystallized directly in flow, resulting a substantial decrease required synthesis and processing time for diverse class of nanomaterials.