Abstract: A sensor device for contactlessly determining a revolution rate and a direction of rotation of a component that rotates during operation of the component, the component having, on at least one peripheral region, a circumferential structure of web-shaped or tooth-shaped radial protrusions and interposed grooves or tooth gaps includes: a threaded segment configured to positionally fix an arrangement of the sensor device so that the circumferential structure of the component is movable past the sensor device; a magnetic field generating device; and a magnetic field detecting device having at least three magnetic field sensors that are not arranged in alignment along a line. A distance between the magnetic field sensors that are the farthest apart from each other is less than or equal to a width of the grooves or tooth gaps of the component.

Abstract: The present invention deals with precursor composition for alkaline earth metal containing ceramic layers. In particular, the present invention pertains to a precursor composition containing:(i) one or more soluble compounds of transition metals (ii) one or more soluble compounds of alkaline earth metals (iii) one or more soluble compounds of rare earth metals (iv) difluorinated carboxylate and/or partly fluorinated propionates (v) one or more solvents, wherein the difference between the boiling points of the corresponding acid of the components (i) to (iii) to the boiling point of component (iv) is less than 60 K.

Abstract: A sensor device for contactlessly determining a revolution rate and a direction of rotation of a component that rotates during operation of the component, the component having, on at least one peripheral region, a circumferential structure of web-shaped or tooth-shaped radial protrusions and interposed grooves or tooth gaps includes: a threaded segment configured to positionally fix an arrangement of the sensor device so that the circumferential structure of the component is movable past the sensor device; a magnetic field generating device; and a magnetic field detecting device having at least three magnetic field sensors that are not arranged in alignment along a line. A distance between the magnetic field sensors that are the farthest apart from each other is less than or equal to a width of the grooves or tooth gaps of the component.

Abstract: Provided herein are methods for the preparation of high purity stannous oxide comprising: (a) reacting a Sn salt with a C2-12 dicarboxylic acid in the aqueous phase to form a suspension comprising a Sn-dicarboxylate complex; (b) washing the Sn-dicarboxylate complex with water to obtain a wash solution comprising a washed Sn-dicarboxylate complex essentially free of the anion of the Sn salt; and (c) reacting the washed Sn-dicarboxylate complex with a base to form high purity SnO, wherein the high purity SnO has an alpha radiation count of less than about 0.002 cph/cm2.

Abstract: Provided herein are methods for the preparation of high purity stannous oxide comprising: (a) reacting a Sn salt with a C2-12 dicarboxylic acid in the aqueous phase to form a suspension comprising a Sn-dicarboxylate complex; (b) washing the Sn-dicarboxylate complex with water to obtain a wash solution comprising a washed Sn-dicarboxylate complex essentially free of the anion of the Sn salt; and (c) reacting the washed Sn-dicarboxylate complex with a base to form high purity SnO, wherein the high purity SnO has an alpha radiation count of less than about 0.002 cph/cm2.

Abstract: The invention is drawn to a composition comprising a tin(II) 2-hydroxycarboxylate, where the 2-hydroxycarboxylate is preferably selected from the group consisting of glycolate, lactate, mandelate and 2-hydroxybutyrate. The tin(II) 2-hydroxycarboxylates may be prepared by a method comprising the steps of (a) providing an aqueous solution of a tin(II) salt, (b) adding a 2-hydroxycarboxylic acid, or a salt of a 2-hydroxycarboxylic acid, (c) further adding a base, wherein the tin(II) 2-hydroxycarboxylate precipitates, (d) optionally, isolating the tin(II) 2-hydroxycarboxylate, and (e) optionally, drying. The tin(II) 2-hydroxycarboxylates and compositions containing them are useful in oral care applications, and as catalysts for chemical condensation reactions and/or the production of polymers.

Abstract: A shaft sealing system for an oil-lubricated shaft bearing in a stationary, externally closed housing filled with liquid vapor may include a shaft projecting into the housing which is mounted in the shaft bearing. The shaft bearing is sealed by means of a sealing arrangement. Sealing of the oil-lubricated shaft bearing that is improved and, in particular, independent of external air supply, is achieved by a counterpressure fan. The counterpressure fan generates a dynamic pressure directed against the sealing arrangement by drawing in outside air, and is held nonrotatably on the shaft on the side of the sealing arrangement facing away from the housing. The sealing arrangement has a flow channel corresponding to the counterpressure fan.