Larry C. Brown

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Denitrification beds are promoted to reduce nitrate load in agricultural subsurface drainage water to alleviate the adverse environmental effects associated with nitrate pollution of surface water. In this system, drainage water flows through a trench filled with a carbon media where nitrate is transformed into nitrogen gas under anaerobic conditions. The(More)
Phosphorus (P) loss from agricultural fields and watersheds has been an important water quality issue for decades because of the critical role P plays in eutrophication. Historically, most research has focused on P losses by surface runoff and erosion because subsurface P losses were often deemed to be negligible. Perceptions of subsurface P transport,(More)
Nitrate (NO3±N) commonly accumulates in soils because of fertilizer additions or when crop demand is much less than the rate of NO3±N production. Water table management (WTM) has been proposed to stimulate denitrifying bacteria, thus removing the accumulated NO3±N by converting it to N2O (a greenhouse gas) and N2. We studied the emission of N2O and N2 as(More)
The Target Fabrication Facility ~TFF! of an inertial fusion energy ~IFE! power plant must supply about 500,000 targets per day. The target is injected into the target chamber at a rate of 5–10 Hz and tracked precisely so the heavy ion driver beams can be directed to the target. The feasibility of developing successful fabrication and injection methodologies(More)
Publications are used extensively by adult and rural educational organizations, including Extension, to educate people when face-to-face contact is not possible or when adjunct instruction is necessary or useful. Yet, very little research has been conducted regarding the level of cognition that is achieved after reading publications. Using the Newcomb-Trefz(More)
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