Abstract: A lean-burn internal combustion engine and an exhaust aftertreatment system having an oxidation catalyst are described. A controller determines a fueling rate and a mass flowrate of the exhaust gas feedstream. An inlet temperature of the exhaust gas feedstream upstream of the oxidation catalyst is determined via the first temperature sensor, and an in-use outlet temperature of the exhaust gas feedstream is determined downstream of the oxidation catalyst via the second temperature sensor. An expected outlet temperature from the oxidation catalyst is determined based upon the inlet temperature, the fueling rate, and the mass flowrate of the exhaust gas feedstream. The oxidation catalyst is evaluated based upon the expected outlet temperature and the in-use outlet temperature.

Abstract: A composite structural member for a building structure comprises a first elongate portion having a first end region and a second end region and a second elongate portion having a first end region and a second end region. The second end region of the first elongate portion is connected to the first end region of the second elongate portion so that the composite structural member provided thereby is substantially longer than either of the first and second elongate portions. The first elongate portion may comprise a first member suited for resisting high magnitude forces and the second elongate portion may be a second member, less well suited for resisting high forces but having lower cost per unit length. The composite structural member may be a rafter, especially a rafter of a portal frame.

Abstract: A composite structural member for a building structure comprises a first elongate portion having a first end region and a second end region and a second elongate portion having a first end region and a second end region. The second end region of the first elongate portion is connected to the first end region of the second elongate portion so that the composite structural member provided thereby is substantially longer than either of the first and second elongate portions. The first elongate portion may comprise a first member suited for resisting high magnitude forces and the second elongate portion may be a second member, less well suited for resisting high forces but having lower cost per unit length. The composite structural member may be a rafter, especially a rafter of a portal frame.

Abstract: A composite structural member for a building structure comprises a first elongate portion having a first end region and a second end region and a second elongate portion having a first end region and a second end region. The second end region of the first elongate portion is connected to the first end region of the second elongate portion so that the composite structural member provided thereby is substantially longer than either of the first and second elongate portions. The first elongate portion may comprise a first member suited for resisting high magnitude forces and the second elongate portion may be a second member, less well suited for resisting high forces but having lower cost per unit length. The composite structural member may be a rafter, especially a rafter of a portal frame.

Abstract: A composite structural member for a building structure comprises a first elongate portion having a first end region and a second end region and a second elongate portion having a first end region and a second end region. The second end region of the first elongate portion is connected to the first end region of the second elongate portion so that the composite structural member provided thereby is substantially longer than either of the first and second elongate portions. The first elongate portion may comprise a first member suited for resisting high magnitude forces and the second elongate portion may be a second member, less well suited for resisting high forces but having lower cost per unit length. The composite structural member may be a rafter, especially a rafter of a portal frame.

Abstract: A collapsible watercraft assembly can include a first pontoon half, a second pontoon half, and a frame member. Each pontoon half can have a top surface, a bottom surface, and at least one post. The first pontoon half and the second pontoon half can be positionable with respect to one another in an operating configuration and a stowed configuration. The operating configuration can be defined when the sterns of the pontoon halves confront one another and the stowed configuration can be defined when the top surfaces of the pontoon halves confront one another. The frame member can be concurrently engageable with the posts to fix the pontoon halves together in the operating configuration. The posts can be interconnected with one another when the first pontoon half and the second pontoon half are in the stowed configuration.

Abstract: An adjustable rod assembly includes first and second tubes having first and second arcuate portions, third and fourth tubes of generally straight configurations, first and second end supports, and a tension rod mechanism fixedly secured within the third tube. A first end of the first tube is telescopingly received within the third tube and a second end of the first tube is telescopingly received within the second tube. The third tube is rotatable relative to the first tube and is rotatably secured within the fourth tube. The fourth tube is secured to the first end support and the second tube is secured to the second end support. The tension rod mechanism rotates with the third tube and has a threaded portion configured to extend from an interior of the third tube to an interior of the first tube.

Abstract: A collapsible watercraft assembly can include a first pontoon half, a second pontoon half, and a frame member. Each pontoon half can have a top surface, a bottom surface, and at least one post. The first pontoon half and the second pontoon half can be positionable with respect to one another in an operating configuration and a stowed configuration. The operating configuration can be defined when the sterns of the pontoon halves confront one another and the stowed configuration can be defined when the top surfaces of the pontoon halves confront one another. The frame member can be concurrently engageable with the posts to fix the pontoon halves together in the operating configuration. The posts can be interconnected with one another when the first pontoon half and the second pontoon half are in the stowed configuration.

Abstract: An adjustable rod assembly includes first and second tubes having first and second arcuate portions, third and fourth tubes of generally straight configurations, first and second end supports, and a tension rod mechanism secured within the third tube. The first tube has a first end, a second opposing end, and a planar surface extending from the second end toward the first end. The first tube is telescopingly received within the third tube and the second tube. The third tube is rotatable relative to the first tube and is rotatably secured within the fourth tube. The fourth tube is secured to the first end support and the second tube is secured to the second end support. The tension rod mechanism rotates with the third tube and has a threaded portion configured to extend from an interior of the third tube to an interior of the first tube.

Abstract: An adjustable rod assembly includes first and second tubes having first and second arcuate portions, third and fourth tubes of generally straight configurations, first and second end supports, and a tension rod mechanism secured within the third tube. The first tube has a first end, a second opposing end, and a planar surface extending from the second end toward the first end. The first tube is telescopingly received within the third tube and the second tube. The third tube is rotatable relative to the first tube and is rotatably secured within the fourth tube. The fourth tube is secured to the first end support and the second tube is secured to the second end support. The tension rod mechanism rotates with the third tube and has a threaded portion configured to extend from an interior of the third tube to an interior of the first tube.

Abstract: A utility tub includes a basin having a bottom wall and a sidewall extending generally perpendicularly therefrom. At least two legs support the basin above a supporting surface. Each of the at least two legs extends generally perpendicularly with respect to the bottom wall of the basin and the supporting surface. A shelf includes a top surface and an opposing bottom surface. The shelf is selectively removably detachable to the basin and each of the at least two legs such that the shelf has a first configuration wherein a least a portion of the shelf is supported within the basin above the bottom wall and the second configuration wherein at least a portion of the shelf is supported by the at least two legs below the bottom wall of the basin.

Abstract: An adjustable rod assembly includes first and second rod assemblies, first and second end supports, and a tension rod mechanism. The first rod assembly has telescoping first, second and third tubes of generally straight configurations. The second tube of the first rod assembly is rotatable relative to the first and third tubes of the first rod assembly. The second rod assembly has telescoping first and second tubes. The third tube of the first rod assembly and the second tube of the second rod assembly are secured to the first end support. The respective first tubes of the first and second rod assemblies are secured to the second end support. The tension rod mechanism is fixedly secured within the second tube of the first rod assembly for rotational movement therewith, and has a threaded portion configured to extend into the first tube of the first rod assembly.

Abstract: An adjustable rod assembly includes first and second rod assemblies, first and second end supports, and a tension rod mechanism. The first rod assembly has telescoping first, second and third tubes of generally straight configurations. The second tube of the first rod assembly is rotatable relative to the first and third tubes of the first rod assembly. The second rod assembly has telescoping first and second tubes. The third tube of the first rod assembly and the second tube of the second rod assembly are secured to the first end support. The respective first tubes of the first and second rod assemblies are secured to the second end support. The tension rod mechanism is fixedly secured within the second tube of the first rod assembly for rotational movement therewith, and has a threaded portion configured to extend into the first tube of the first rod assembly.

Abstract: An adjustable rod assembly includes first and second tubes having first and second arcuate portions, third and fourth tubes of generally straight configurations, first and second end supports, and a tension rod mechanism secured within the third tube. The first tube has a first end, a second opposing end, and a planar surface extending from the second end toward the first end. The first tube is telescopingly received within the third tube and the second tube. The third tube is rotatable relative to the first tube and is rotatably secured within the fourth tube. The fourth tube is secured to the first end support and the second tube is secured to the second end support. The tension rod mechanism rotates with the third tube and has a threaded portion configured to extend from an interior of the third tube to an interior of the first tube.

Abstract: An adjustable rod assembly includes first and second tubes having first and second arcuate portions, third and fourth tubes of generally straight configurations, first and second end supports, and a tension rod mechanism secured within the third tube. The first tube has a first end, a second opposing end, and a planar surface extending from the second end toward the first end. The first tube is telescopingly received within the third tube and the second tube. The third tube is rotatable relative to the first tube and is rotatably secured within the fourth tube. The fourth tube is secured to the first end support and the second tube is secured to the second end support. The tension rod mechanism rotates with the third tube and has a threaded portion configured to extend from an interior of the third tube to an interior of the first tube.

Abstract: An adjustable rod assembly includes first and second rod assemblies, first and second end supports, and a tension rod mechanism. The first rod assembly has telescoping first, second and third tubes of generally straight configurations. The second tube of the first rod assembly is rotatable relative to the first and third tubes of the first rod assembly. The second rod assembly has telescoping first and second tubes. The third tube of the first rod assembly and the second tube of the second rod assembly are secured to the first end support. The respective first tubes of the first and second rod assemblies are secured to the second end support. The tension rod mechanism is fixedly secured within the second tube of the first rod assembly for rotational movement therewith, and has a threaded portion configured to extend into the first tube of the first rod assembly.

Abstract: An adjustable rod assembly includes first and second tubes having first and second arcuate portions, third and fourth tubes of generally straight configurations, first and second end supports, and a tension rod mechanism fixedly secured within the third tube. A first end of the first tube is telescopingly received within the third tube and a second end of the first tube is telescopingly received within the second tube. The third tube is rotatable relative to the first tube and is rotatably secured within the fourth tube. The fourth tube is secured to the first end support and the second tube is secured to the second end support. The tension rod mechanism rotates with the third tube and has a threaded portion configured to extend from an interior of the third tube to an interior of the first tube.

Abstract: A utility tub includes a basin having a bottom wall and a sidewall extending generally perpendicularly therefrom. At least two legs support the basin above a supporting surface. Each of the at least two legs extends generally perpendicularly with respect to the bottom wall of the basin and the supporting surface. A shelf includes a top surface and an opposing bottom surface. The shelf is selectively removably detachable to the basin and each of the at least two legs such that the shelf has a first configuration wherein a least a portion of the shelf is supported within the basin above the bottom wall and the second configuration wherein at least a portion of the shelf is supported by the at least two legs below the bottom wall of the basin.