Abstract: An underground permeability measuring apparatus includes an injection member formed as a lance to be introduced into the underground, having a cavity for guiding a fluid to at least one exit port, which preferably is arranged in the free end region of the injection member, through the injection member and the exit port into the underground surrounding the injection member is injectable. An injection member for introduction into an underground includes a cavity for guiding a fluid to at least one exit port, which preferably is arranged in the free end region of the injection member. The apparatus further includes a pressure-increasing device, through which the fluid is injectable by overpressure through the injection member and the exit port into the underground surrounding the injection member.

Abstract: The invention relates to immunoadsorbers for use in sepsis therapy, in particular for removal of complement factors and lipopolysaccharides (LPS) and, if need be, further sepsis mediators such as TNF and interleukins from body fluids, methods for their production and their use.

Abstract: A composite structural member is constructed to take up dynamic loads. A force transmitting element is glued to a force applying element and to a force take-up element to form the composite member. The force transmitting element is a molded blank of cellular polyurethane having an open cell structure throughout. The open cells also extend along the surfaces glued to the force applying element and to the force take-up element. The glue or adhesive used is a moisture curing polyurethane prepolymer capable of penetrating into said open cell structure, thereby greatly increasing the adhesive bond.

Abstract: A structural part made of titanium and/or titanium alloy is given a surface treatment by sandblasting or chemical pickling and is provided with a protective film of a strong reducing agent such as a solution of a derivative of hydrazine or hydroxylamine which is applied directly over the titanium and immediately thereafter a slide layer of a nickel is applied over the reducing agent layer preferably by spraying. Complex derivatives of hydrazine and hydroxylamine in the form of salts may be applied during a pickling and descaling treatment. The adhesion of the wear-resistant layer of metal is improved by a refining at a temperature of about 300.degree. C to obtain an intermetallic bond between the titanium and nickel at the interfacial boundary.