Machine learning predicts electron densities with DFT accuracy | Research

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Rosie on the house: Should I use PVC or polyethylene piping to water my yard? | Home & Garden

Polyethylene piping is a good choice for drip irrigation lines, as long as the water pressure is controlled. Polyethylene piping is a good choice for drip irrigation lines, as long as the water pressure is controlled. QUESTION: I am redoing the drip irrigation line around the perimeter of our yard. Do you suggest using PVC pipe or polyethylene? I have many mature shrubs plus landscaping rock along the perimeter with grass in the center – probably a total length of 400 feet. A portion of the drip line is under pavers installed by previous owners on the covered patio. ANSWER: As long as all the main feeder piping is controlled by a pressure reducing valve – no more than 30 pounds per square inch – the poly pipe will be much easier to install and requires fewer fittings. Just make sure that all the city required piping is done in PVC because it can handle the higher pressure needed. Q: We have a five-year-old air conditioner and furnace system that had a checkup last week. The technician said the dirt and dust is building up in our system and the air conditioner is working too hard. He suggested installing a new electronic device that uses special pads sold by the AC company and th...