THE EFFICIENCIES, ENVIRONMENTAL IMPACTS AND ECONOMICS OF ENERGY CONSUMPTION FOR GROUNDWATER-BASED IRRIGATION IN OKLAHOMA

The Efficiencies, Environmental Impacts and Economics of Energy Consumption for Groundwater-Based Irrigation in Oklahoma

Irrigation pumping is a major expense of agricultural operations, especially in arid/semi-arid areas that extract large amounts of water from deep groundwater resources.Studying and improving pumping efficiencies can have direct impacts on farm net profits and on the amount of greenhouse gases (GHG) emitted from pumping plants.In this study, the ov

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Light Curve Variations of AR Lacertae

Sixteen unitary Light curves of AR Lac in B and V are made at Yonsei University Observatory in the period of PNP 1980-1988.Some overview findings of light variations are made.(1) The light variations outside eclipse follow none of the wave migration patterns reported by previous investigators.(2) Complicated shapes outside eclipse are apparently mu

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