Abstract: An extrusion die for extrusion of metal has a passageway with a bearing section having parallel bearing surface portions in the direction of extrusion which extend inwardly from an inlet opening a variable distance based upon the size of the gap at such portions and a relief section downstream from said bearing section and having relief surface portions tapering away from said bearing surface portions in the direction of extrusion, said relief surface portions following a straight-line path.

Abstract: A method for distinguishing Creutzfeldt-Jakob disease from other causes of human dementia by analyzing the cerebrospinal fluid of patients for proteins 130 and 131. The presence of these proteins indicates the presence of Creutzfeldt-Jakob disease.

Abstract: A small carburetor for chain saws and the like which needs no fuel pump. A spring-biased diaphragm has a radically higher bias than is normal and controls a fuel inlet valve open to the tank such that a higher vacuum is needed to open the valve, thus providing the necessary pull to draw fuel from a tank in any position relative to the fuel tank whether below, above, or to the side of the carburetor. An on-off check valve is interposed between the diaphragm fuel chamber and the main fuel orifice to insure constant negative pressures in the diaphragm chamber. The carburetor body, molded from plastic, has a composite jet insert and plug-in connection to the engine.