Abstract:
A process is provided for the preparation of a compound having the structure of Formula I The process includes reacting a heterocyclic amine with a monoaldehyde or a dialdehyde in a pH range of from about 8 to 14 and then quaternizing the so-reacted heterocyclic amine with an alkylating agent at a pH of not less than about 2. The use of pH control substantially prevents formation of an undesirable protonated reaction intermediate.
Abstract:
Disclosed are compositions and methods for classifying stem cells. The disclosure provides a way to define cells using a computational analysis.
Abstract:
An object detecting device that includes a housing, a light source at or in the housing, for indicating that an object has been sensed, a probe linked to the light source, for sensing the object and for activating the light source when the object is sensed and a light detector assembly attached to the housing for coupling the light source with a processing unit.
Abstract:
A measuring system for determining the position of two machine components that are movable in relation to each other, having a measuring graduation extending in a measuring direction, a support body supporting the measuring graduation, a scanning device scanning the measuring graduation, a mounting base for fastening the scanning device on one of the components, and a securing device for fixing the mounting bas in place in a prescribed position with respect to the support body. The securing device includes a base body that is supported on at least two areas of the support body that are spaced apart from each other with respect to the measuring direction and a guide element. A guide track is provided in the support body, wherein the guide element interlockingly engages the guide element and in which the guide element can be clamped in place in that the guide element is displaced in relation to the base body by a connecting element.
Abstract:
The invention relates to a method for producing sandwich construction elements for substantially load-bearing and self-supporting building parts. In one embodiment of the invention, a method is provided including a) producing at least one layer of a mechanically bonded fiber nonwoven which is impregnated with a binder based on at least one heat-curable resin system b) curing the heat-curable resin system in order to produce at least one hardened layer of the fiber nonwoven, and fixed thermally, c) bringing a heat-foamable or heat-foamed phenol resin into contact with that surface of at least one hardened layer of the fiber nonwoven which has been modified according to step b), d) possibly annealing the composite produced in a) to c), and e) curing the further binder based on at least one heat-curable resin system.
Abstract:
An process for producing thin silicone by extrusion of a layer of silicone. The silicone layer may be extruded onto a substrate layer. The silicone layer and the substrate layer may be extruded together out of an extrusion die.