Methods of forming a colored ceramic body or dental article are described that include: (a) forming a body from a ceramic-containing powder; (b) shaping the body into a desired shape; and (c) firing the shaped body in an atmosphere comprising at least one coloring agent. Methods of forming a fully dense ceramic body that lacks discoloration, are also described which include: (a) forming a body from a ceramic-containing powder; (b) shaping the body into a desired shape; (c) placing the shaped bod...

The invention disclosed relates to a method and apparatus for controlling the dissolved gas content of aqueous liquid containing a dissolved gas by providing a microporous hydrophobic hollow fibre membrane, to provide at equilibrium a stable interface between an aqueous liquid phase containing dissolved gas on one side of the membrane and a gaseous phase on the other side of the membrane, and controlling the aqueous phase and gaseous phase pressures, such that in operation the gaseous phase pres...

The invention addresses the use of a composite carbon dioxide scavenging filler which has been dispersed uniformly into a polymeric matrix. The resultant layer can then be coated or laminated onto a paper, paperboard, foil, or other substrates. It can also be made into a cast or blown film. The carbon dioxide scavenging structure thus created desirably contains a polymeric matrix binder as the filler dispersion medium, one or more particular carbon dioxide scavenging fillers, one or more moistur...

Controlled atmosphere entry/exit lock unit (10) for association with a controlled atmosphere cabinet (80), the lock unit (10) having two controlled access means (13; 30) both usually operable alternatively for sealing and communicating, one (30) relative to said cabinet (80) and the other (13) relative to outside, the lock unit further having atmosphere control means (70-78) operable for achieving internal atmosphere conditions compatible with what may be prescribed for said cabinet (80), the on...

Apparatus and method for controlling the composition of the atmosphere within a refrigerated container during the storage and/or transportation of perishable and/or respiring produce in which carbon dioxide and ethylene (and other evolved hydrocarbons) are removed from the container atmosphere by adsorption, the adsorptive materials being regenerated with ambient air.

A package for containing food products has at least two compartments having different atmospheric conditions. Each of the compartments may be sealed by a membrane having different permeability. The membranes may be sealed to a peripheral flange extending around each of the compartments. The peripheral flange is designed to facilitate severing in place on the tray of a membrane from a continuous web of material.

The method and apparatus of the present invention provides a more efficient and cost effective method and apparatus for applying agents to plants, crops, vegetation, and trees, while avoiding the problems associated with conventional impingement velocity tunnel sprayers. The method and apparatus of the present invention utilizes the conditions in a controlled atmosphere to deposit agents on plants and provides a device which increases the maneuverability of pesticide spray rigs.

An inert atmosphere spot soldering process and apparatus uses pockets arranged to match the arrangement of the terminals to be soldered. The pockets are filled to over flowing with liquid solder by lowering the pockets below the surface of the molten solder in a solder pot. A flow of hot inert gas is provided through orifices adjacent the pockets. The terminals and their surrounding area are exposed to the hot inert gas for a period sufficient to drive off substantially all volatile liquids and ...

A controlled atmosphere incubator having an interior chamber surrounded by a heated water jacket. A glass access door of the chamber is directly heated by a clear, electrically conductive coating. The door is sealed against the perimeter of the opening by a readily replaceable gasket and is field reversible due to unique hinge mounting assemblies. An easily accessed blower assembly is located within the chamber and includes a HEPA filter readily replaceable by the user from within the chamber. A...

An introduction system for introducing an atmosphere into an interior of an autoclave alters an existing atmosphere. The introduction system comprises at least one source of actuating gas; an actuating mechanism, a pressure barrier that separates an interior of the autoclave from ambient exterior atmosphere; and a containment vessel that is located at least partially in the interior of the autoclave. The containment vessel comprises a plurality of walls, at least one of the walls comprising a re...