U102-B Gear Pump
Materials:
Body: Aluminum (Spray-Painted)
seals: Buna-N
Technical Specifications:
Power:750-1000W
Flow Rate:45~90L/min
Rotary speed :630~730rpm
Noise:?8dB
Vacuum :>=0.054Mpa
Pressure Drop:0.12-0.25Mpa
Air separation ability:20%
Features :
Positive displacement,self priming,internal adjustable bypass valve
Designed for quiet, vibration-free operation.Reusable suction
strainer filter and reverse check valve inside adapted
Check and relief valve inside adapted
100% tested before Ex-Factory
Package:
Product ID Net Weight Cross Weight Dimension
U102-B 18kg/case of 1 18.5kg/case of 1 36×32× 30cm/case of 1
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f two photons that travel in opposite
directions from the site of the collision. Using detectors to look out for the near-
simultaneous arrival of pairs of photons, it is possible to work out where the
positrons are being emitted and form an image of the tissues where the
radioactive atoms have accumulated.
One of the first medical studies that attempted to take advantage of the unique
physics of positron emit fuel dispenser ters was reported in the early 1950s by Gordon
Brownell and William Sweet of the Massachusetts General Hospital in Boston.
By using two opposing detectors, the near-simultaneous arrival of pair fuel dispenser s of
photons could be recorded and counted. As the detectors moved in a raster-like
fashion up and down on opposite sides of the head, increased count rates
revealed the site of a brain tumour in which the radioactive atoms had
accumulated.
Two obstacles, however, hampered the use of biologically important positron
emitters for some time. The first was that the radioactive elements in question
decay very quickly. This is a good thing from the patient s point of view, since it
minimises the dose of radiation, but it means that the radiotracers must be manufactured very close to the
imaging system. And that highlights the second obstacle such positron emitters must be made in a expensive
cyclotron (a type of particle accelerator).
Despite these drawbacks, in 1966 the late Michel Ter-Pogossian, then head of Washington University s division of
radiological sciences in St Louis, and Henry Wagner, professor of radiology and medicine at Johns Hopkins
University, published an influential paper that advocated the use of positron emitters as tracers, on the grounds
that they seemed uniquely suited for investigating the biochemical processes of the body.
Their efforts coincided with an important scientific breakthrough the development of
“As anatomical
computed tomography, in which mathematical algor fuel dispenser
