This study describes the simulation of gas demand for greenhouses in the agricultural area. Using the data provided by an energy company providing gas to over 3600 individual greenhouses , several models are developed to predict the gas demand of an individual green house. Using these models peak smoothing strategies for the overall gas demand can be developed and tested. Three of such peak smo...

the Grand President of the League, and Princess Alice, Countess of Athlone, the Lady President. Consequently, when the Prince came into the garden from Clarence House at four o'clock, the lawns which lie in front of the State apartments were thronged. In the absence abroad of Lord Wolferton, the senior Honorary Secretary, the Prince was received by Sir William Collins and Sir James Harrison, Ho...

In addition to decreasing feeding costs, improving the efficiency of utilization of N directly addresses the general concern regarding the environmental footprint of animal production. Excretion of N, especially urinary, may become a potential source of water and air pollution, the latter as N2O, a green-house gas, or as small particulate aerosols having a negative effect on air quality [smog; ...

The K-value (the overall heat transfer coefficient) is an important factor to reflect thermal performance of the covering material in a green house. The measuring process of K -value was burdensome in labors, low accuracy, complicated in dealing with data that is difficult to meet the development of modern agriculture. New testing methods need to be developed, and specially designed for greenho...

There is mounting evidence that urban areas influence biodiversity. Generalizations however require that multiple urban areas on multiple continents be examined. Here we evaluated the role of urban areas on avian diversity for a South American city, allowing us to examine the effects of urban features common worldwide, using the city of Valdivia, Chile as case study. We assessed the number of b...