Abstract: A metal alloy is provided which includes by weight percentage of the metal alloy, 28 to 55 percent copper, 45 to 63 percent nickel, and 4 to 10 percent iron. The metal alloy may be weight percentage 28 percent copper, 62 percent nickel, and 10 percent iron. The metal alloy may be formed into a foil which may have a thickness of 100 ?m or less or 50 ?m or less. A magnetic field instrument may include a magnetometer core body formed from one or more layers of the foil. The magnetometer core body may be a ring core or a racetrack core. The magnetic field instrument may further include a sense winding and may further include a drive winding. The magnetic field instrument may be a fluxgate magnetometer.

Abstract: A laminated structural arch system for supporting a horizontal planar structure, comprising at least one laminated arch. Each laminated arch is comprised of a plurality of arch plates rigidly fastened together in parallel, and forming a laminated configuration. Each arch plate is separated from the arch plate adjacent to it by a separation gap. The laminated structural arch system may contain two or more laminated arches positioned in parallel and secured to an anchoring structure, allowing one or more panels which comprise the horizontal planar structure to be positioned across and supported by the laminated arches. The laminated structural arch system may be provided as a kit of disassembled arch plates, allowing the system to be easily transported, handled, and assembled.

Abstract: A laminated structural arch system for supporting a horizontal planar structure, comprising at least one laminated arch. Each laminated arch is comprised of a plurality of arch plates rigidly fastened together in parallel, and forming a laminated configuration. Each arch plate is separated from the arch plate adjacent to it by a separation gap. The laminated structural arch system may contain two or more laminated arches positioned in parallel and secured to an anchoring structure, allowing one or more panels which comprise the horizontal planar structure to be positioned across and supported by the laminated arches. The laminated structural arch system may be provided as a kit of disassembled arch plates, allowing the system to be easily transported, handled, and assembled.

Abstract: Novel complexes of various earth-abundant, inexpensive transition or main group metals that facilitate the transformation of carbon dioxide into other more useful organic products. These complexes can bind and alter the CO2 at mild conditions of temperature and pressure, enabling, according to some embodiments, the electrochemical conversion of CO2 into new products.

Abstract: Novel complexes of various earth-abundant, inexpensive transition or main group metals that facilitate the transformation of carbon dioxide into other more useful organic products. These complexes can bind and alter the CO2 at mild conditions of temperature and pressure, enabling, according to some embodiments, the electrochemical conversion of CO2 into new products.

Abstract: A system management human-machine interface application for use in a process control system is described herein that enables users to view/monitor information regarding system status and performance and to initiate changes to the operation of system equipment, checkpoint control stations and execute diagnostics. A system management graphical user interface (GUI) includes a number of interface features that enhance the accessibility of system status information to users. Such enhancements include rendering selectable diagnostic information (e.g., online/offline status) on a system component navigation view. The GUI also provides access to a variety of system information including: alarms, messages, watched system management parameters, and a legend for symbols displayed in a system management navigation tree.

Abstract: A system management human-machine interface application for use in a process control system is described herein that enables users to view/monitor information regarding system status and performance and to initiate changes to the operation of system equipment, checkpoint control stations and execute diagnostics. A system management graphical user interface (GUI) includes a number of interface features that enhance the accessibility of system status information to users. Such enhancements include rendering selectable diagnostic information (e.g., online/offline status) on a system component navigation view. The GUI also provides access to a variety of system information including: alarms, messages, watched system management parameters, and a legend for symbols displayed in a system management navigation tree.

Abstract: A system management human-machine interface application for use in a process control system is described herein that enables users to view/monitor information regarding system status and performance and to initiate changes to the operation of system equipment, checkpoint control stations and execute diagnostics. A system management graphical user interface (GUI) includes a number of interface features that enhance the accessibility of system status information to users. Such enhancements include rendering selectable diagnostic information (e.g., online/offline status) on a system component navigation view. The GUI also provides access to a variety of system information including: alarms, messages, watched system management parameters, and a legend for symbols displayed in a system management navigation tree.

Abstract: A system management human-machine interface application for use in a process control system is described herein that enables users to view/monitor information regarding system status and performance and to initiate changes to the operation of system equipment, checkpoint control stations and execute diagnostics. A system management graphical user interface (GUI) includes a number of interface features that enhance the accessibility of system status information to users. Such enhancements include rendering selectable diagnostic information (e.g., online/offline status) on a system component navigation view. The GUI also provides access to a variety of system information including: alarms, messages, watched system management parameters, and a legend for symbols displayed in a system management navigation tree.

Abstract: A method, apparatus, and article for solving the year 2000 problem involve processing a computer object program to identify object code instructions referencing date information for an operation which involves more than one century. The object code is altered by altering each identified instruction with an instruction to effect a transfer of control to a Year 2000 routine. The Year 2000 routine is a routine for altering the execution of an identified instruction in accordance with the Year 2000 routine and thereafter returning control to the object code.

Abstract: A Structured External Storage (SES) processor is linked by a communication means to one or more general purpose processors. Two or more applications executing on the one or more general purpose processors communicate function request messages to a message processor within the SES to effect serialized sharing of data within the SES. Within the message processor, a predicate function means executes unconditionally on receipt of one of the function request messages, and a data function means executes conditionally and atomically with respect to the predicate function means following a "successful" condition produced by the predicate function means.

Abstract: In order to combat flutter in rotor blades rotating within a duct bounded by a duct wall, the duct wall incorporates cavities tuned for resonance to a known flutter frequency. The cavities, which may comprise tubes immediately underlying a facing sheet of the duct wall, are arrayed around the circumference of the duct wall and communicate with the duct through openings in the duct wall near the tips of the blades. Flutter energy from the blades is transferred directly to the cavities by pressure waves and produces resonance in the cavities so that the flutter is damped aerodynamically. The invention is applicable to fans in turbofan engines.

Abstract: A gas turbine engine has a turbine which includes an annular array of rotary aerofoil blades surrounded by an annular shroud member. All or a major portion of the annular shroud member is constituted by a heat pipe. A distance measuring device is provided to measure the clearance between the tips of the rotary aerofoil blades and the shroud member and its output is monitored by a control unit. The control unit is adapted to control a valve which regulates the flow rate of cooling air directed onto the heat pipe. The arrangement is such that the temperature of the heat pipe is maintained at a level which is consistent with the clearance between the rotary aerofoil blade tips and the annular shroud member being within a predetermined range of values.

Abstract: Sparkplug means for an internal combustion engine are provided with conduits to introduce pre-combustion gases directly to a mixing area adjacent the sparking electrodes. This may be by connecting the conduits into the plug directly or by connecting them into an adapter to be interposed between the engine and the sparkplug, and providing a pre-combustion chamber therebetween. Preferably there is a mixing area upstream of the electrodes. An electrolyzer can be built into the arrangement to generate the pre-combustion gases immediately adjacent the sparkplug.

Abstract: An aerofoil blade for a gas turbine engine is in the form of a heat pipe. The aerofoil blade has an internal passageway adapted to contain a secondary structure and to thermally insulate that secondary structure from the remainder of the aerofoil blade by, for instance, the provision of a cooling air passage between the internal passageway and secondary structure.

Abstract: A stator aerofoil blade for a gas turbine engine is manufactured in the form of a heat pipe so that during engine operation, the blade remains substantially isothermal. Localized thermal gradients within the blade are minimized thereby reducing the possibility of blade distortion or cracking.A shroud ring for a gas turbine engine is manufactured in the form of a heat pipe so that during engine operation, the ring remains substantially isothermal. Localized thermal gradients within the ring are minimized, thereby reducing the possibility of ring distortion occurring.

Abstract: This invention relates to a system for communicating between a central station, such as a host processor, and one or more remote stations, such as terminal devices, on a pair of communication loops. A remote station operates normally on a selected one of the loops (the primary loop for the station) and it has access to but does not normally use the other loop (the secondary loop for the station). An improved apparatus and method is provided for switching a remote station from its primary loop to its secondary loop when its primary loop is disabled. Means is provided for a remote station to listen to messages on its secondary loop. For switching the remote stations from a disabled primary loop, a unique command is transmitted on their secondary loop. Remote devices operating with a primary connection to the loop that carries this command recognize the command and respond in a non-interferring way.