The corrosion of metals, especially iron, is a serious problem that costs billions of dollars every year. The process of corrosion can be demonstrated in a slide projector, since the cell is in the shape of a slide, or on the stage of an overhead projector by setting up a simple galvanic cell.Corrosion occurs as the result of a galvanic cell reaction, in which the corroding metal acts as the anode.Several simple demonstrations relating to corrosion are described here, for example : differential aeration cell, differential temperature cell, stress–corrosion cracking, and cathodic protection. We have found this kind of presentation to be very successful. Even in a large lecture room, the demonstration can be easily seen by all of the students.
This "new" high-incidence antigen has been named MAM and assigned high-incidence antigen number 901016 by the International Society of Blood Transfusion. The corresponding antibody, anti-MAM, has been shown to cause HDN and has the potential to shorten RBC survival after the transfusion of incompatible RBC units, as determined by monocyte monolayer assay. Immunoblotting and flow cytometry show that this new antibody reacts with various WBC lines in addition to RBCs. This antibody also appears to react with platelets in some assays.
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