A5061834951- Landslides and related hazards
- Food composition and properties
- earthquake and tectonic studies
- Geotechnical Engineering and Analysis
- Geotechnical Engineering and Underground Structures
- Seismic Waves and Analysis
- Tree Root and Stability Studies
- Spectroscopy and Chemometric Analyses
- Seismic Performance and Analysis
- Seismology and Earthquake Studies
- Geotechnical Engineering and Soil Mechanics
- Advanced Chemical Sensor Technologies
- Proteins in Food Systems
- Meat and Animal Product Quality
- Potato Plant Research
- Earthquake and Disaster Impact Studies
- Marine and environmental studies
- Flood Risk Assessment and Management
- Geology and Paleoclimatology Research
- Dam Engineering and Safety
- Polysaccharides Composition and Applications
- Geological Modeling and Analysis
- Geological Studies and Exploration
- Cryospheric studies and observations
- Nanocomposite Films for Food Packaging
Earthquake Science Center
2022-2025
United States Geological Survey
2019-2025
Pacific Island Ecosystems Research Center
2023
University of Arkansas at Fayetteville
2021
University of Washington
2016-2019
Lebanese American University
2016
Tufts University
2013
Beckman Laser Institute and Medical Clinic
2008
University of California, Irvine
2008
Norwich Research Park
1987-2001
We present a fabrication process for Polydimethylsiloxane (PDMS) tissue simulating phantoms with tunable optical properties to be used system calibration and performance testing.Compared liquid phantoms, cured PDMS are easier transport use, have longer usable life than gelatin based phantoms.Additionally, the deformability of makes it better option over hard such as polyurethane when using probes which require contact.PDMS has refractive index about 1.43 in near infrared domain is range...
The coastal Pacific Northwest USA hosts thousands of deep-seated landslides. Historic landslides have primarily been triggered by rainfall, but the region is also prone to large earthquakes on 1100-km-long Cascadia Subduction Zone megathrust. Little known about number these because last magnitude 9 rupture occurred in 1700 CE. Here, we map 9938 bedrock Oregon Coast Range and use surface roughness dating estimate that past fewer than half 1000 years. We find landslide frequency increases with...
Summary Near infra‐red (NIR) analysis has been developed over the last 20 years into a routine method for many agricultural commodities and food constituents. The theoretical statistical framework, which made this possible, is reviewed extent of applications presented. development NIR demonstrated difficulties limitations are discussed. On‐line methods using being expected to be one most important future use in industry.
Abstract Strong earthquakes along subduction zones are often devastating events, but sparse records some tectonic margins limit our understanding of seismic hazards. Constraining shaking intensities is critical, especially in with infrequent large‐magnitude like the Cascadia Subduction Zone (CSZ), where lack recorded ground motions has led to uncertainty severity and potential impacts future earthquakes. Here we fill this observational gap a novel inventory quantitative estimates past from...
Given the likelihood of future M9 Cascadia Subduction Zone (CSZ) earthquakes, various estimates resulting, regional ground motions have been made, including a suite 30 physics-based simulations that reflect key modeling uncertainties. However, because last CSZ interface rupture occurred in 1700 CE, shaking expected such an event is especially uncertain, as are impacts to built and living environments. Like other coseismic impacts, soil liquefaction poses significant threat must be considered...
Abstract In experiments where the interaction of starch and cell size were kept to a minimum by taking identical material for each experiment (disks from same tuber), loss compressive strength potato tissue on cooking was found be related release pectic substances into liquor. This relationship hold true whether large differences in produced disks water varying lengths time or solutions calcium potassium chloride fixed times. The liquor not when results number tuber compared. Increased time,...
Abstract Investigation of ground failure triggered by the 2018 Mw 7.1 Anchorage earthquake showed that landslides, liquefaction, and cracking all occurred caused significant damage. Shallow rock falls slides were most abundant types but they in smaller numbers than global models are based on magnitude predict; this might result from being an intraslab event. Liquefaction was common alluvial intertidal areas; deformation probably related to liquefaction damaged numerous houses port facilities...
The process of cellular autolysis was studied in an industrial strain Penicillium chrysogenum by a range methods, including assessment biomass decline, NH+4 release, changes culture apparent viscosity, and means quantitative micromorphology using computerized image analysis system. pattern total intracellular proteolytic beta-1, 3-glucanolytic activity the also examined. overall aim to identify suitable method, or for examining extent fungal cultures. Autolysis submerged batch processes,...
Abstract It was shown from experiments on disks cooked in solutions of calcium chloride and acetate, buffered at various pHs (sodium concentration constant) where the ratios to were varied, that effect increasing compressive strength small compared reduced pH. The interaction sodium investigated pH 6 (≈︁ potato tissue). reducing outweighed strength. Sodium potassium had a similar loss cooking. Increased due or presence overcome by extending length is suggested transelimination, ion exchange...
Abstract In the minutes to hours after a major earthquake, such as recent 2018 Mw 7.1 Anchorage event, U.S. Geological Survey (USGS) produces suite of interconnected earthquake products that provides diverse information ranging from basic source parameters loss estimates. The is first domestic occur since several new USGS have been developed, thus providing an opportunity discuss newly expanded product suite, its timeliness, performance, and reception. Overall, were relatively timely,...
It has been reported that caroubin, a protein mixture obtained from carob seeds, rheological properties similar to those of gluten. Comparative studies the effects hydration and temperature on caroubin gluten were carried out with aid NMR, FTIR, scanning electron microscopy, differential calorimetry techniques. The results show more ordered structure than little effect its secondary when compared Caroubin is easily accessible water gluten, suggesting hydrophilic in nature. On hydration, like...
Abstract We develop ensemble ShakeMaps for various magnitude 9 (M 9) earthquakes on the Cascadia megathrust. Ground-shaking estimates are based 30 M earthquake scenarios, which were selected using a logic-tree approach that varied hypocenter location, down-dip rupture limit, slip distribution, and location of strong-motion-generating subevents. In previous work, Frankel et al. (2018) used hybrid (i.e., 3D deterministic simulations frequencies <1 Hz stochastic synthetics >1 Hz)...
Abstract The 2020 Mw 5.8 Lone Pine earthquake, the largest earthquake on Owens Valley fault zone, eastern California, since nineteenth century, ruptured an extensional stepover in that fault. separates two normal-faulting regimes, western margin of Great basin and Sierra Nevada, forming a complex seismotectonic possible nascent plate boundary. Foreshocks began 22 June 2020; 4.7 foreshock occurred at ∼6 km depth, with primarily normal faulting, followed ∼40 hr later 24 by mainshock ∼7 depth....