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Do Healthy Foods Cost More? It Depends on How You Measure the Cost AgEcon
Carlson, Andrea; Frazao, Elizabeth.
Replaced with revised version of poster 07/22/10.
Tipo: Conference Paper or Presentation Palavras-chave: Cost of healthy foods; Whole grains; Fruits; Vegetables; Energy cost; Edible weight cost; Standard portion cost; Food cost; Prices; NHANES; PED; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 2010 URL: http://purl.umn.edu/61014
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Water quality and rainbow trout performance in a Danish Model Farm recirculating system: Comparison with a flow through system ArchiMer
Roque D'Orbcastel, Emmanuelle; Blancheton, Jean-paul; Belaud, Alain.
The objective was to compare water quality and fish growth and mortality in a pilot scale recirculating system (RS) and a control tank in flow through system (FTS). The RS was designed after the Danish Model Trout Farm and operated with a make Lip Water renewal rate of 9 m(3) kg(-1) of fish produced. RS water quality did not decrease significantly with water flow rate decrease in the RS. During the experiment, the RS water treatment system presented solids removal efficiency of 59.6 +/- 27.7% d(-1), ammonia oxidation of 45 +/- 32 g m(-3) d(-1), oxygenation yield of 392 +/- 132 g of O-2 kWh(-1) and CO2 degassing of 23.3 +/- 11.9% pass(-1). In the RS, nitrite concentration was 0.15 +/- 0.07 mg l(-1), close to the toxicity threshold; a N-2 supersaturation...
Tipo: Text Palavras-chave: Energy cost; Water quality; Flow rate; Treatment system; Performance; Trout; Recirculating system.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6506.pdf
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Winner, Loser, or Innocent Victim? Has Renewable Energy Performed As Expected? AgEcon
McVeigh, James; Burtraw, Dallas; Darmstadter, Joel; Palmer, Karen L..
This study provides an evaluation of the performance of five renewable energy technologies used to generate electricity: biomass, geothermal, solar photovoltaics, solar thermal, and wind. We compared the actual performance of these technologies against stated projections that helped shape public policy goals over the last three decades. Our findings document a significant difference between the success of renewable technologies in penetrating the U.S. electricity generation market and in meeting cost-related goals, when compared with historic projections. In general, renewable technologies have failed to meet expectations with respect to market penetration. They have succeeded, however, in meeting or exceeding expectations with respect to their cost. To a...
Tipo: Working or Discussion Paper Palavras-chave: Renewable energy; Regulation; Electricity generation; Energy cost; Environmental Economics and Policy; Q42; L94.
Ano: 1999 URL: http://purl.umn.edu/10627
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