Development of guidelines for using bioextraction technologies to manage nutrients in New Hampshire\u27s estuarine waters

There is growing literature on bioextraction approaches to managing nutrients in coastal waters, and it includes studies using a variety of species. Bivalve mollusks and macroalgae have received the most attention for several reasons, but perhaps foremost because of their aquaculture potential. A December 2009 workshop at the University of Connecticut, which included speakers from several countries, indicated overall that although bioextraction approaches hold substantial potential there are still many unanswered questions. The present review takes a “what we know/what we need to know” perspective, and focuses on aquaculture. For some taxa (e.g., eastern oyster), wild populations occur in New Hampshire which provide substantial nutrient bioextraction. The associated processes that result in nutrient removal from the ecosystem, however, are generally more complicated and much more difficult to unambiguously quantify except when actual harvest data are available. Therefore, the present review focuses on aquaculture, and it is restricted to those taxa (plants and animals) that occur in New Hampshire. It should be noted that the present project is associated with a recently completed project (funded by the Piscataqua Region Estuaries Partnership [PREP]) consisting of a field experiment designed to provide empirical data on nutrient uptake by oysters. The final report for this project represents the starting point for future research that will more completely characterize the bioextraction potential for oysters in New Hampshire (see discussion of Grizzle and Ward 2011 below)

An overview of agricultural policy... past, present, and future

An abstract for this article is not availableFarmers Home Administration ; Farm income ; Agriculture - Forecasting

Herbicide Application Rates: Risk Premiums with Environmental Implications

This paper examines the role of risk aversion in setting herbicide label rates and application rates. Companies establish label rates to be efficacious for a wide range of conditions. The use of reduced rates of herbicide offer the opportunity to increase farm profit and reduce herbicide use, an environmental benefit.Crop Production/Industries, Environmental Economics and Policy, Risk and Uncertainty,

The agricultural outlook for 1985...a little promise seen

An abstract for this article is not availableAgriculture

Pennies, Pricing, and Rounding: Is all the Relevant Analysis In?

Response to paper by Robert Whaples.

Overview of aerothermodynamic loads definition study

The objective of the Aerothermodynamic Loads Definition Study is to develop methods of accurately predicting the operating environment in advanced Earth-to-Orbit (ETO) propulsion systems, such as the Space Shuttle Main Engine (SSME) powerhead. Development of time averaged and time dependent three dimensional viscous computer codes as well as experimental verification and engine diagnostic testing are considered to be essential in achieving that objective. Time-averaged, nonsteady, and transient operating loads must all be well defined in order to accurately predict powerhead life. Described here is work in unsteady heat flow analysis, improved modeling of preburner flow, turbulence modeling for turbomachinery, computation of three dimensional flow with heat transfer, and unsteady viscous multi-blade row turbine analysis