Wilson Process Systems cells

Concentric cell Wilson Process Systems Inner surface of a cylindrical foil (copper or stainless steel) Discontinuous cathode may be furnace-refined in the case of gold No V ... 

Rotating electrode cell Wilson Process Systems Rotating cylindrical foil (usually stainless steel) or static cylindrical foil with rotating anode (larger cells) Discontinuous by manual scraping or flexing No V V ... 

CYCLONE CELL Wilson Process Systems Limited 9 Waterworks Road Hastings... 

The use of a concentric cathode cell [10] has been described for the recovery of precious metal on a small scale (Wilson Process Systems), from spent photographic solutions and from electroplating and refining wastes. The recovery of the metal is by manually scraping from the cathode or by furnace refining in the case of gold. 

Fig, 7.11 A concentric, Aow-through cylinder cell, (a) The cel) section, (b) A typical cell, showing the cathode removed. (Courtesy Wilson Process Systems Ltd,)... 

Fig. 7.6 A 300 A rotating-anode reactor for photographic silver recovery. A view of the top of the cell. The 6.5 cathode is surrounded by 72 carbon rod anodes mounted on rotating rings inside a glass-reinforced plastic tank. (Courtesy Wilson Process Systems Ltd.) The anode mounting rings which lie inside and outside the cathode rotate at 30 rev min" Cell liquor capacity is 750 dm the tank has an approximate diameter of 1.4 m and is 1.2 m high. The electrolyte is pumped around the cell.

HDL, like LDL, is a cholesterol-rich particle, and is distinct from the other lipoprotein classes in that it does not contain apoB. HDL levels are inversely correlated with risk for atherosclerosis (Wilson et al., 1988). Nascent HDL particles are produced by direct synthesis (Hamilton, 1984), and excess surface remnants from chylomicrons and VLDL produced during the action of lipoprotein lipase (as noted above) enter the HDL density class. HDL appears to be involved in delivery of cholesterol to steroidogenic tissues as well as the removal of excess cholesterol from peripheral tissues and excretion from the system. This HDL-mediated removal of cholesterol has been termed reverse cholesterol transport (Glomset, 1968). Although apolipoproteins present in HDLs are cleared by the liver, the reverse cholesterol transport pathway has never been directly demonstrated. HDL can remove cholesterol from tissues, a process that may be partially mediated by interaction with a putative HDL receptor, with apoA-I as the ligand for that receptor (Oram el ai, 1983). The existence of an HDL receptor remains controversial saturable HDL binding may not be mediated by a specific apolipoprotein ligand and may not even be required for transfer of cholesterol from cells to... 

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