A5029076321- demographic modeling and climate adaptation
- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Semiconductor materials and devices
- Iron and Steelmaking Processes
- Plasma Diagnostics and Applications
- Nuclear Physics and Applications
- Ship Hydrodynamics and Maneuverability
- Mineral Processing and Grinding
- Maritime Ports and Logistics
- Chemical Looping and Thermochemical Processes
- High-pressure geophysics and materials
- Rangeland and Wildlife Management
- Magnetic Properties and Applications
- Environmental and Air Quality Management
- Ecology and Vegetation Dynamics Studies
- Urban Transport and Accessibility
- Fire effects on ecosystems
- Silicon Carbide Semiconductor Technologies
- Land Use and Ecosystem Services
- Flood Risk Assessment and Management
- Remote Sensing and Land Use
- Big Data Technologies and Applications
- Granular flow and fluidized beds
- Groundwater and Isotope Geochemistry
University of Oregon
2021-2024
Arizona State University
1989-2018
University of New Mexico
1986
Time-dependent Boltzmann electron distribution calculations have been made at constant power and pressure in a SF6/O2 plasma with varying oxygen mole fraction. The results show that as the fraction increases plasma, number of high-energy electrons tail mean energy both increase significantly while is kept same reduced electric field E/N. Rate coefficients computed for kinetic processes these plasmas merged within equilibrium model etch process, including neutral gas-phase chemistry, ion...
Abstract Exotic annual grass invasion is a widespread threat to the integrity of sagebrush ecosystems in Western North America. Although many predictors prevalence and native perennial vegetation have been identified, there remains substantial uncertainty about how regional‐scale local‐scale interact determine heterogeneity, associations between cattle grazing vary with environmental context. Here, we conducted regionally extensive, one‐season field survey across burned unburned, grazed,...
A modified Hartshorn inductance bridge is used to follow changes in the magnetization of superparamagnetic samples order determine their average temperature. The thermometry performed temperature range 475–525 K. During routine experiments, rms noise voltage approximately 300 nV when primary coil excited by a 200 mA current at frequency 47 Hz. This corresponds signal-to-noise ratio 3000 and sensitivity 0.015 K for typical studied.
Abstract A magnetic thermometric method is used to determine cross‐sectional average axial catalyst temperature profiles for superparamagnetic neckel beds during ethane hydrogenolysis, an exothermic reaction. Each solid profile determined from of magnetization and represented by a polynomial. In turn, each voltage data obtained as the bed moved through AC permeameter. Fredholm equation first kind, “regularized” using minimum variance constraint, inverted profile. The determination reactor...
Abstract Map algebras are used for the manipulation of spatial data and form basis many types analyses modeling efforts. The most basic a map algebra applies same function (e.g., addition, subtraction) across study area. To account local variation parameters, we present spatially dynamic to demonstrate need utility algebraic functions where is determined based on specific relative location. such an comes from growth complex models values variables or parameters not fixed space. Locally...
Abstract A magnetic method to measure the time and spatial average temperature of supported nickel catalysts in fluidized beds is detailed. It an extension a developed this laboratory study fixed beds. The RMS output voltage AC permeameter used follow changes moment, hence temperature, catalyst upon starting or stopping ethane hydrogenolysis. theory thermometry detailed observed vs. traces for typical experiments are explained. Simulations indicate that signals generated by moving particles...