Posted by Robert Huntress on December 12, 2007 at 17:04:20 from (65.4.211.65):
In Reply to: Save the world???? posted by Nebraska Cowman on December 12, 2007 at 16:10:53:
"It is my turn to cringe when I hear overstated-confidenc... from those who describe the projected evolution of global weather patterns over the next 100 years, especially when I consider how difficult it is to accurately predict the system's behavior over the next five days." John Christy, University of Alabama in Huntsville Professor of Atmospheric Science, Director of the Earth System Science Center and State Climatologist working on Alabama's economic development. I personally think that if scientist started to say that global warming were not an issue, most would be unemployed. Who wants to pay grants to study a non issue? It also appears that many private compaies profit from policies that are driven by the theory of global warming. How much does it cost to constantly upgrade AC&R equipment to use changing refrigerants. R-22 will be obsolete in the coming years requiring coolers be upgraded to yet a newer refrigerant.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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