A5065291008- Environmental and Cultural Studies in Latin America and Beyond
- Graphite, nuclear technology, radiation studies
- Bioenergy crop production and management
- Soil Carbon and Nitrogen Dynamics
- Nuclear and radioactivity studies
- Cryospheric studies and observations
- Polar Research and Ecology
- Semiconductor Quantum Structures and Devices
- Nuclear Materials and Properties
- Geological formations and processes
- Geology and Paleoclimatology Research
- Biofuel production and bioconversion
- Microbial Community Ecology and Physiology
- Quantum and electron transport phenomena
- Nuclear reactor physics and engineering
- Invertebrate Taxonomy and Ecology
- Nuclear Physics and Applications
- earthquake and tectonic studies
- Soil erosion and sediment transport
- Non-Destructive Testing Techniques
- Quantum-Dot Cellular Automata
- Geological and Tectonic Studies in Latin America
- High-Temperature Coating Behaviors
- Soil Geostatistics and Mapping
- Chemical Safety and Risk Management
University of Wisconsin–Madison
2012-2021
Great Lakes Bioenergy Research Center
2012-2018
University of Stirling
1985-2015
UK Centre for Ecology & Hydrology
2008-2011
Eckerd College
1999-2009
Idaho National Laboratory
2004-2008
University of Arkansas at Fayetteville
2008
International Commission for the Hydrology of the Rhine Basin
2001-2007
Brigham Young University
2005
Argonne National Laboratory
2004
Associative N fixation (ANF), the process by which dinitrogen gas is converted to ammonia bacteria in casual association with plants, has not been well-studied temperate ecosystems. We examined ANF potential of switchgrass (Panicum virgatum L.), a North American prairie grass whose productivity often unresponsive fertilizer addition, via separate short-term 15N2 incubations rhizosphere soils and excised roots four times during growing season. Measurements occurred along fertilization...
Abstract Greenhouse gas ( GHG ) emissions from soils are a key sustainability metric of cropping systems. During crop establishment, disruptive land‐use change is known to be critical, but under reported period, for determining emissions. We measured soil N 2 O and potential environmental drivers these fluxes three‐year establishment‐phase bioenergy systems experiment replicated in southcentral Wisconsin ARL southwestern Michigan KBS ). Cropping treatments were annual monocultures...
Nitrogen (N) fertilization can greatly improve plant productivity but needs to be carefully managed avoid harmful environmental impacts. Nutrient management guidelines aimed at reducing forms of N loss such as nitrous oxide (N2O) emissions and nitrate (NO3(-)) leaching have been tailored for many cropping systems. The developing bioenergy industry is likely make use novel systems, polycultures perennial species, which we limited nutrient experience. We studied how a switchgrass (Panicum...
The choice of crops and their management can strongly influence soil microbial communities processes. We used lipid biomarker profiling to characterize how composition five potential bioenergy cropping systems diverged from a common baseline years after they were established. we studied included an annual system (continuous no-till corn) four perennial (switchgrass, miscanthus, hybrid poplar, restored prairie). Partial- no-stover removal compared for the corn system, while N-additions...
It is well established that soil microbial communities change in response to altered land use and cover, but less known about the timing of these changes. Understanding temporal patterns recovering an important part improving how we assess manage reconstructed ecosystems. We assessed community-level diversity abundance corn prairie plots 2 4 years after establishment agricultural fields, using phospholipid fatty acid biomarkers. Principal components analysis lipid biomarkers revealed...
Core Ideas Fermentable sugars were greatest in corn stover > perennial grasses polycultures. Corn had the highest ethanol content. Miscanthus yield potential on a per hectare basis. Ethanol of switchgrass ≥ stover. Biomass was strongest driver yield. Many crops have been proposed as feedstocks for emerging cellulosic industry, but information is lacking about relative importance feedstock production and quality. We compared sugar content seven bioenergy cropping systems south‐central...
The treatment of malnutrition, which is great concern in paediatric haematology/oncology patients, fraught with problems. goals our study were to document the complications and assess weight gain gastrostomy tubes (G-tubes) this population.Patient data acquired by retrospective review all haematology, oncology, bone marrow transplant (BMT) patients (n = 44) who received radiologically placed G-tubes at institution over a 4-year period.Forty-four (59% peri-BMT). At tube placement, 55%...
Abstract. The proteases secreted by four strains (MT004, 1102, 480 and 480P ‐ ) of Aeromonas salmonicida grown in liquid culture have been studied. Strains MT004, 1102 all show a similar pattern with two types produced; one molecular weight 70 000 which is active against casein gelatin (or more) lower (about 20 000) (are) but not casein. Strain produces only the latter type protease(s). protease classified as serine‐type protease, further characterization features its site has yet proved...
The impact of slope position on forest restoration processes may dominate the interaction among topsoil aggregates, nutrients, and organic carbon (C) stability following reforestation degraded hilly land. Six paired plots shrubland Masson pine (Pinus massoniana Lamb.) plantation reforested were selected at different positions along a 25° in subtropical China. Soil ecosystem nitrogen (N), phosphorus (P), C stocks quantified using combination excavation, harvest, modeling methods. Carbon...
Coulomb-blockade spectroscopy measurements are made on a small GaAs/AlGaAs quantum dot in magnetic field oriented parallel to the plane of sample. peak motion is observed which can be explained by changes spin successive ground states as single electrons added. The movement at low consistent with that expected from Zeeman coupling, it inferred not added strictly alternating up/spin down manner.