Selecting the Proper Pump
نویسندگان
چکیده
will fit your needs, you must know four things: 1) the total head or pressure against which it must operate, 2) the desired flow rate, 3) the suction lift, and 4) characteristics of the fluid. Aquaculture operations imply that you will be pumping water, but you also need to know such things as the temperature range, the corrosiveness (is it salty water?), and how much and what kind of trash or debris such as sand, dirt, leaves, fish or twigs may be in the water. With this knowledge, you and your dealer can select the proper pump.
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Background: The aim of this study is comparing ACTH changes in epidural and intravenous analgesia technique after lower limb orthopedic surgery.Methods: In a randomized clinical trial in Hazrat Rasool Akram Hospital during 1387-88 , 60 patients candidate for surgery on the lower extremities were randomly allocated to receive either postoperative analgesia with epidural analgesia (PCEA) or IV ...
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