Abstract: A building including a roof and a rooftop mechanical unit, the rooftop mechanical unit being supported on top of the roof by at least a first roof curb and a second roof curb, a gap being provided between the roof curbs, each of the roof curbs being less than 15 feet in length; wind can blow snow through the gap and out the other side, which inhibits the buildup of a snowdrift which undesirably increases roof load.

Abstract: A personalized training system to perform operations that include: receiving a score that corresponds with a content identifier from a user account, the score comprising at least a value that comprises an attribute; accessing a user profile associated with the user account, the user profile indicating a cohort associated with the user account; identifying a set of scores within a leaderboard associated with the content identifier based on the cohort associated with the user account; determining a first ranking of the score associated with the user account among a portion of the set of scores based on at least the attribute of the score; and determining a second ranking of the user account among a subset of the portion of the set of scores based on the value of the score.

Abstract: A building including a roof and a rooftop mechanical unit, the rooftop mechanical unit being supported on top of the roof by at least a first roof curb and a second roof curb, a gap being provided between the roof curbs, each of the roof curbs being less than 15 feet in length; wind can blow snow through the gap and out the other side, which inhibits the buildup of a snowdrift which undesirably increases roof load.

Abstract: Disclosed is a jump rope assembly comprising one or more handles having a jump rope secured to a head that is rotatably disposed on a body of the handle. Additionally, head may include a fastener attached to an end of the rope and secured within the head of the jump rope yet still free to rotate about an axis formed by the centerline of the rope body. In some configurations a universal joint is attached to each end and secured to the jump rope handle, with one end of the input yoke acting as a column for rotation and one end of the output yoke used to secure the rope, and both free ends of each yoke attaching to the cross-trunnion to complete the assembly.

Abstract: Disclosed is a jump rope comprising: an oil impregnated bushing; having a pair of handles with an external surface treatment. Additionally, the rope may include a fastener attached to each end and secured within the head of the jump rope yet still free to rotate about an axis formed by the centerline of the rope body. In some configurations a universal joint is attached to each end and secured to the jump rope handle, with one end of the input yoke acting as a column for rotation and one end of the output yoke used to secure the rope, and both free ends of each yoke attaching to the cross-trunnion to complete the assembly.

Abstract: Disclosed is a jump rope comprising: an oil impregnated bushing; having a pair of handles with an external surface treatment. Additionally, the rope may include a fastener attached to each end and secured within the head of the jump rope yet still free to rotate about an axis formed by the centerline of the rope body. In some configurations a universal joint is attached to each end and secured to the jump rope handle, with one end of the input yoke acting as a column for rotation and one end of the output yoke used to secure the rope, and both free ends of each yoke attaching to the cross-trunnion to complete the assembly.

Abstract: Improved phosphor pigments are disclosed. The pigments consist of an inorganic phosphor pigment such as a Eu2+ activated alkaline earth metal aluminate/silicate which is bonded to borosilicate glass balloon microspheres. The density of the improved phosphor pigments is preferably in the range 0.20 to 1.50 g/cm3. A process for preparing the improved phosphor pigment is also disclosed.

Abstract: The invention concerns a telecommunications mast installation (10), typically a base station in a cellular telephone network, which includes a mast (14) supporting a telecommunications antenna (16). A foundation structure (12) supports the mast. The foundation structure is in the form of an enclosed chamber (24) situated at least partially underground and defining an internal space which is accessible to personnel and which accommodates electronic equipment associated with operation of the antenna. For aesthetic and security reasons, it is preferred that the chamber (24) be competely underground.

Abstract: The invention relates to mammalian cell lines and transgenic mammals. More particularly, it relates to a method for producing a rat cell line, a method for producing a transgenic rat, a transgenic rat, a rat cell line, cells and tissue obtained therefrom and uses therefore. The cell line derived from a transgenic mammal comprises: (i) a conditional oncogene, transforming gene or immortalising gene or a cell cycle affecting gene; and (ii) a cell type specific promoter. They include a neuronal cell line in which the cell type specific promoter is an NF-L gene promoter, and a mammary cell line in which the cell type specific promoter is a MMTV gene promoter. The conditional oncogene, transforming gene or immortalising gene is preferably a SV40tsA58 gene.

Abstract: A rotational molding method for forming two separate molded parts each including an undercut portion includes providing a mold formed from two mold parts connected at a mold junction, introducing a particulate plastics material and rotating the mold about two axes while applying heat to the mold so as to cause the plastics material to melt within the hollow interior and adhere to the inside surface. An annular heat conduction member extends from an outer edge outside the mold through the junction between the two mold parts to an inner edge inside the hollow interior and carries two undercut mold portions for molding respective undercut portions of the two separate molded parts. A band of a heat insulating material such as Teflon is located around the junction between the parts on the inside of the heat conducting member which prevents the adherence of the plastics material at the band so that the mold molds the separate molded parts each separately from the other.

Abstract: Improved phosphor pigments are disclosed. The pigments consist of an inorganic phosphor pigment such as a Eu2+ activated alkaline earth metal aluminate/silicate which is bonded to borosilicate glass balloon microspheres. The density of the improved phosphor pigments is preferably in the range 0.40 to 1.00 g/cm3. A process for preparing the improved phosphor pigment is also disclosed.

Abstract: The invention concerns a telecommunications mast installation (10), typically a base station in a cellular telephone network, which includes a mast (14) supporting a telecommunications antenna (16). A foundation structure (12) supports the mast. The foundation structure is in the form of an enclosed chamber (24) situated at least partially underground and defining an internal space which is accessible to personnel and which accommodates electronic equipment associated with operation of the antenna. For aesthetic and security reasons, it is preferred that the chamber (24) be competely underground.

Abstract: Deviations in flatness on a horizontal surface are measured by running over the surface, at a constant driven speed, an instrument sensitive to slope and which generates a continuous voltage signal corresponding to a continuous slope measurement. The continuous voltage signal is filtered to remove extraneous high frequency voltage signals thereby to produce raw continuous analog slope data which is digitized and calibrated to provide calibrated digital slope data from which other flatness data is computed. Procedures are described for calibrating the instrument and for eliminating or compensating for distortions in the measurements.

Abstract: Improved connections of preformed concrete construction elements wherein one or more metal pins, of any preferred cross-sectional shape, are cast in place, or grouted, extending into each of two elements to be connected, with an elastic grommet disposed between a portion of each pin, in an area on each pin nearest the joint, and the surrounding concrete or grout, whereby the load transfer capacity of the connection is increased about threefold.

Abstract: The invention is a tank-baffle system including a baffle member mounted in a tank and connected to the tank with a male-female interlocking arrangement thus avoiding the use of welding, adhesive or bolts. The invention is especially suitable for use in polyethylene tanks.

Abstract: A plug for closing an aperture in a panel comprising a metal plate portion and a plurality of metal legs. The plate portion and the legs can be formed from different materials having different characteristics. Each leg comprises an attaching portion which attaches the leg on the plate portion and a mounting portion which depends from the plate portion. The legs are so shaped and positioned that they are co-operatively snap-engagable through the aperture in the panel to mount the plug in the aperture. The legs and the plate portion are manufactured separately and subsequently assembled. A sealing ring having a channel shaped cross-section is optionally attached to the periphery of the plate portion so as to overlie the upper and lower surfaces of the periphery of the plate portion.

Abstract: A beading clip for attachment to a headed stud projecting from a supporting surface which will, when attached to the stud, clamp a beading against the supporting surface. The clip comprises an arched body portion with a slot extending into one side to permit passage of the shank of the headed stud. A leg extends parallel to the slot and is spaced from the body portion. Abutment means are carried on opposite sides of the body portion. In use the legs engage the supporting surface so that the leg and the body portion are compressed between the supporting surface and the head of the stud. The abutment means clamp the edges of the beading to the supporting surface.