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Science Briefs
Diagnostic Kit from Molluscs
Luminescent material found in the rare pholas dactylus mollusc is to be cloned and produced by bugs for use tn new diagnostic kits that are expected to help victims of arthrlties, asthma, kidney failure, dlabets. heart diseases, burns, trauma and accidents, reports London Press Service.
The kits are being developed by the Klnght Scientific biotechnology company from
Plymouth In western England, where Jan and Robert Knight have been Investigating the unique properties of the mollusc luminescent material for a number of years.
They are now working with Exeter University’s biological sciences department to produce large amount of the material from microbes that have had certain genes of the hard shelled Invertebrates Inserted into them.
The diagnostic kits are aimed at diseases that Involve large numbers of white blood
cells which sometimes become activated and produce chemicals that can damage healthy tissue. Sometimes these same cells, while still very active, lose their ability to destroy bacteria and people die from infection.
The new kits, which should be available within a year for research use. will use the luminescent material along with a novel device to separate the white to glow by substances produced by the activated white cell and the light produced can be easily measured.
This facility can be used to establish the effect of particular drugs on the output of the activated white cells. Pholasln can also be made to glow with certain enzymes and used as a probe to detect proteins and nucleic acids.
Clean Anode Paste Dosing from Norway
ACLEAN process for the production of anode paste for aluminium smelting Is now available from Procon Engineering in Norway, reports the Journal Process Engineering.
Three Innovations lie behind the claims for Improved performance: closed and fully dust proof materia] vessels, precise forced feeding, and the loss-of-welght principle.
The closed vessels cut down on the need for air filtration. ventilation, cleaning and maintenance. Each vessel has a rotating feeder capable of handling any material, including filter dust and any fraction of petrol coke and anthracite. Liquid pitch is dosed by the same principle using a displacement pump.
The common problem of belt weighers, such as dust, arc eliminated by the use of vessel load cells operating on the loss-of weight principle. The Journal said full documentation of dosing and composition can be provided at any time.
This feature is useful internally. but even more so for anode sales companies with customer demands for documented quality assurance. Procon Engineering developed the process in cooperation with Hydro Aluminium and has already supplied It to five Norwegian companies.