Abstract: A vessel header includes lateral flow tubes arranged in a parallel configuration. The lateral flow tubes enter the vessel header through alternating vessel header penetrations with a single vessel header penetration per lateral flow tube. Each lateral flow tube has a perforated section within the vessel header having a non-circular cross-section having the shape of a circular sector, an elliptical sector, or an irregular quadrilateral. A method includes passing a molten polymer through the lateral flow tubes of the vessel header. The molten polymer exits the lateral flow tubes as strands through perforations in the lateral flow tubes within the vessel header. The method includes obtaining devolatilized polymer.

Abstract: A method for locating the surface of a solid growth culture medium in a plate in a plate work position, the plate work position including a sensor and having a datum level fixed in one dimension (z), the method including: placing the plate in the plate work position; using the sensor to sense the medium surface for the positioned plate and measuring the distance to the medium surface; and referencing the measured distance to the datum level to determine a surface positional reference, relative to the datum level, in one dimension (z) for the surface of the medium in the positioned plate.

Abstract: A process for producing a high impact polystyrene having a high swell index may include feeding at least one vinyl aromatic monomer and at least one elastomer to at least one polymerization reactor to form a reaction mixture. The process may include polymerizing the reaction mixture, combining a chain transfer agent to the reaction mixture leaving the at least one polymerization reactor to form a combined mixture, and sending the combined mixture to a devolatilization zone. The process may include obtaining a HIPS product having a high swell index.

Abstract: An apparatus for inoculating and streaking a solid growth culture medium in a plate, the streaking using a streaking applicator having a line of resiliently and flexibly supported spaced apart contact surfaces, the apparatus including: (a) an inoculating and streaking station including: a plate work position having a notional action line fixed in two dimensions (x,y) in a predetermined position; and a plate rotation device for rotating a positioned plate to cause streaking; (b) a sensor capable of locating the surface of the medium in a positioned plate to thereby determine for that plate, prior to inoculation and streaking of that plate, the third dimension (z) of the action line; (c) an inoculating device capable of dispensing inoculum, along the action line, on the surface of the medium in the positioned plate; and (d) a streaking device capable of moving the streaking applicator such that its line of spaced apart contact surfaces contacts, along the action line, the surface of the medium in the positi

Abstract: A vapor conduit for use in an apparatus for bulk vapor phase crystal growth, an apparatus for bulk vapor phase crystal growth, and a process for bulk vapor phase crystal growth are described. The vapor conduit is a flow conduit defining a passage means adapted for transport of vapor from a source volume to a growth volume, wherein a flow restrictor is provided in the passage means between the source volume and the growth volume and wherein the flow conduit further comprises a flow director structured to direct vapor flow downstream of the flow restrictor away from a longitudinal center line of the conduit and for example towards an edge of the conduit.

Abstract: A vessel header includes lateral flow tubes arranged in a parallel configuration. The lateral flow tubes enter the vessel header through alternating vessel header penetrations with a single vessel header penetration per lateral flow tube. Each lateral flow tube has a perforated section within the vessel header having a non-circular cross-section having the shape of a circular sector, an elliptical sector, or an irregular quadrilateral. A method includes passing a molten polymer through the lateral flow tubes of the vessel header. The molten polymer exits the lateral flow tubes as strands through perforations in the lateral flow tubes within the vessel header. The method includes obtaining devolatilized polymer.

Abstract: A process for producing a high impact polystyrene having a high swell index may include feeding at least one vinyl aromatic monomer and at least one elastomer to at least one polymerization reactor to form a reaction mixture. The process may include polymerizing the reaction mixture, combining a chain transfer agent to the reaction mixture leaving the at least one polymerization reactor to form a combined mixture, and sending the combined mixture to a devolatilization zone. The process may include obtaining a HIPS product having a high swell index.

Abstract: A process for producing a high impact polystyrene having a high swell index including feeding at least one vinyl aromatic monomer and at least one elastomer to at least one polymerization reactor to form a reaction mixture, polymerizing the reaction mixture, combining a chain transfer agent to the reaction mixture leaving the at least one polymerization reactor to form a combined mixture, sending the combined mixture to a devolatilization zone and obtaining a HIPS product having a high swell index.

Abstract: A vapour conduit for use in an apparatus for bulk vapour phase crystal growth, an apparatus for bulk vapour phase crystal growth, and a process for bulk vapour phase crystal growth are described. The vapour conduit is a flow conduit defining a passage means adapted for transport of vapour from a source volume to a growth volume, wherein a flow restrictor is provided in the passage means between the source volume and the growth volume and wherein the flow conduit further comprises a flow director structured to direct vapour flow downstream of the flow restrictor away from a longitudinal centre line of the conduit and for example towards an edge of the conduit.

Abstract: Coating systems and processes by which the coating systems can be deposited to be resistant to contaminants, and particularly resistant to infiltration and damage caused by CMAS. The coating systems include inner and outer ceramic layers, each having a microstructure characterized by splats and horizontal porosity. The inner ceramic layer consists essentially of zirconia stabilized by about 6 to about 9 weight percent yttria. The outer ceramic layer overlies and contacts the inner ceramic layer to define the outermost surface of the coating system. The outer ceramic layer consists essentially of zirconia stabilized by about 25 to about 75 weight percent yttria, has a thickness that is less than the thickness of the inner ceramic layer, and has a porosity level that is lower than that of the inner ceramic layer.

Abstract: Coating systems and processes by which the coating systems can be deposited to be resistant to contaminants, and particularly resistant to infiltration and damage caused by CMAS. The coating systems include inner and outer ceramic layers, each having a microstructure characterized by splats and horizontal porosity. The inner ceramic layer consists essentially of zirconia stabilized by about 6 to about 9 weight percent yttria. The outer ceramic layer overlies and contacts the inner ceramic layer to define the outermost surface of the coating system. The outer ceramic layer consists essentially of zirconia stabilized by about 25 to about 75 weight percent yttria, has a thickness that is less than the thickness of the inner ceramic layer, and has a porosity level that is lower than that of the inner ceramic layer.

Abstract: A method of manufacturing a component suitable for use in a gas turbine engine, comprising the steps of forming the component from a substrate having a first surface and a second surface, forming at least one aperture through the substrate from the first surface to the second surface having a first open area, applying a first coating to at least one of the first surface and the second surface adjacent to the at least one aperture, the aperture remaining at least partially unobstructed by the first coating, applying a second coating to the first coating adjacent to the at least one aperture, the aperture remaining at least partially unobstructed by the second coating, and removing the second coating from the aperture, leaving most or all of the first coating to define a second open area which is smaller than the first open area.

Abstract: A humidity sensitive composition which consists: a) of 5 to 50% by weight of a water and/or water vapor absorbing agent; b) 10 to 60% of a water vapor absorbing and releasing agent selected from perlite or vermiculite; c) 5 to 50% of an absorbent for small molecules. Is used as the basis for controlling container rain, sequestering carbon dioxide, and removing ozone and hydrogen sulfide from the air.

Abstract: An apparatus for inoculating and streaking a solid growth culture medium in a plate, the streaking using a streaking applicator having a line of resiliently and flexibly supported spaced apart contact surfaces, the apparatus including: (a) an inoculating and streaking station including: a plate work position having a notional action line fixed in two dimensions (x,y) in a predetermined position; and a plate rotation device for rotating a positioned plate to cause streaking; (b) a sensor capable of locating the surface of the medium in a positioned plate to thereby determine for that plate, prior to inoculation and streaking of that plate, the third dimension (z) of the action line; (c) an inoculating device capable of dispensing inoculum, along the action line, on the surface of the medium in the positioned plate; and (d) a streaking device capable of moving the streaking applicator such that its line of spaced apart contact surfaces contacts, along the action line, the surface of the medium in the positi

Abstract: A method for locating the surface of a solid growth culture medium in a plate in a plate work position, the plate work position including a sensor and having a datum level fixed in one dimension (z), the method including: placing the plate in the plate work position; using the sensor to sense the medium surface for the positioned plate and measuring the distance to the medium surface; and referencing the measured distance to the datum level to determine a surface positional reference, relative to the datum level, in one dimension (z) for the surface of the medium in the positioned plate.

Abstract: An apparatus for inoculating and streaking a solid growth culture medium in a plate, the streaking using a streaking applicator having a line of resiliently and flexibly supported spaced apart contact surfaces, the apparatus including: (a) an inoculating and streaking station including: a plate work position having a notional action line fixed in two dimensions (x,y) in a predetermined position; and a plate rotation device for rotating a positioned plate to cause streaking; (b) a sensor capable of locating the surface of the medium in a positioned plate to thereby determine for that plate, prior to inoculation and streaking of that plate, the third dimension (z) of the action line; (c) an inoculating device capable of dispensing inoculum, along the action line, on the surface of the medium in the positioned plate; and (d) a streaking device capable of moving the streaking applicator such that its line of spaced apart contact surfaces contacts, along the action line, the surface of the medium in the positioned

Abstract: An apparatus for crystal growth including a source chamber configured to contain a source material, a growth chamber, a passage for transport of vapour from the source chamber to the growth chamber, and a support provided within the growth chamber that is configured to support a seed crystal. The coefficient of thermal expansion of the support is greater than the coefficient of thermal expansion of the growth chamber.

Abstract: An apparatus for vapour phase crystal growth comprising an envelope assembly with a one source module defining at least one source volume, a growth module defining at least one growth volume, and a manifold module defining at least one manifold volume. The source module, manifold module and growth module are configured co-operably to define a fluidly continuous envelope volume including a flow restrictor between the source volume and the growth volume. A vacuum vessel containing one or more of the envelope assemblies. An evacuator to evacuate the vacuum vessel. A fluid communication path between the envelope volume and the vacuum vessel associated with each source volume at a location on the source volume side of its associated flow restrictor. A closure mechanism is configured to restrict the fluid communication path between each source volume and the vacuum vessel. A method of employing such an apparatus is also disclosed.

Abstract: Coating systems and processes by which the coating systems can be deposited to be resistant to contaminants, and particularly resistant to infiltration and damage caused by CMAS. The coating systems include inner and outer ceramic layers, each having a microstructure characterized by splats and horizontal porosity. The inner ceramic layer consists essentially of zirconia stabilized by about 6 to about 9 weight percent yttria. The outer ceramic layer overlies and contacts the inner ceramic layer to define the outermost surface of the coating system. The outer ceramic layer consists essentially of zirconia stabilized by about 25 to about 75 weight percent yttria, has a thickness that is less than the thickness of the inner ceramic layer, and has a porosity level that is lower than that of the inner ceramic layer.

Abstract: A process for producing a high impact polystyrene having a high swell index including feeding at least one vinyl aromatic monomer and at least one elastomer to at least one polymerization reactor to form a reaction mixture, polymerizing the reaction mixture, combining a chain transfer agent to the reaction mixture leaving the at least one polymerization reactor to form a combined mixture, sending the combined mixture to a devolatilization zone and obtaining a HIPS product having a high swell index.