منابع مشابه
Insulin pumps.
I nsulin pump therapy—continuous subcutaneous insulin infusion (CSII)—was developed in the UK in the 1970s. Rapid technological developments changed the initial pumps from the size of a house brick, charged by mains electricity to an acceptable dimension, battery driven. We described the use of pumps in young people with type 1 diabetes (T1D) in the UK in Archives of Disease in Childhood in the...
متن کاملComparing pumps.
Comparative evolutionary studies have greatly aided our understanding of how the heart develops. Two recent articles from Benoit Bruneau’s laboratory reveal the power of the so-called evo-devo approach and provide yet further details of development, both of the heart itself and of the cells that build it. Thanks to our many and varied primitive cousins, developmental biologists are gaining a go...
متن کاملPeristaltic Pumps
Peristaltic pumps are mechanical displacement pumps that induce flow in a fluid-filled, flexiblewalled conduit through peristalsis – transport due to traveling contraction waves. While macroscale peristaltic pumps appear in a variety of configurations, micropumps based on this principle almost exclusively use the sequenced contraction and expansion of a small number of discrete actuators – typi...
متن کاملPumps in wearable ultrafiltration devices: pumps in wuf devices.
The wearable artificial kidney (WAK) is a device that is supposed to operate like a real kidney, which permits prolonged, frequent, and continuous dialysis treatments for patients with end-stage renal disease (ESRD). Its functioning is mainly related to its pumping system, as well as to its dialysate-generating and alarm/shutoff ones. A pump is defined as a device that moves fluids by mechanica...
متن کاملReplacing Gas-Assisted Glycol Pumps with Electric Pumps
Gas-assisted pumps are the most common circulation pumps in remote areas that do not have an electrical power supply. They are basically pneumatic gas driven pumps, specially designed to take advantage of the energy of high-pressure natural gas entrained in the rich (wet) TEG leaving the gas contactor. Additional high-pressure wet production gas is necessary for mechanical advantage, and theref...
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ژورنال
عنوان ژورنال: Science
سال: 1972
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.177.4051.815