Abstract: A system or apparatus for use in downhole communication or detection comprises a downhole arrangement defining a throughbore and primary and secondary elements. One of the primary and secondary elements is provided on the downhole arrangement and the other of the primary and secondary elements is provided in the throughbore. The primary and secondary elements are configurable for coupling of an electromagnetic field therebetween. The primary or secondary element which is provided in the throughbore may be provided on a tool such as a shifting tool which is deployable through the throughbore. The secondary element may be configured to provide the electromagnetic field coupled between the first and second elements with one or more characteristic features. The system may be configured for use, in particular though not exclusively, for communicating information to and/or from a downhole tool in an oil or gas well.

Abstract: An annular bearing cage for a roller bearing of a turbine machine rotating shaft is provided. The bearing cage includes a vibration damping ring corresponding to deformation modes of the bearing cage, and at least one external rim. The external rim includes an at least partially annular housing that extends around a central axis of the bearing cage. The damping ring is located in the housing.

Abstract: A method provides for operating an engine configured to use a plurality of differing fuels. The method includes determining a fuel combustion ratio of the plurality of the fuels associated with at least one engine cylinder of the engine based at least in part on one or more of a plurality of characteristic profiles. This maintains one or more of a plurality of actual values associated with usage of the plurality of fuels relative to defined corresponding threshold values. The fuel combustion ratio includes a ratio of the plurality of fuels to be delivered to the at least one engine cylinder. A fuel delivery system delivers the plurality of fuels to the at least one engine cylinder based on the fuel combustion ratio.

Abstract: A low profile, alignment assembly for a media feed roll assembly using torsion spring biasing. The alignment assembly has a first and a second spaced bushings mountable to a frame. Each bushing has a circular collar and a cradle positioned along a common centerline for rotatably holding a driven first and an opposed second shaft on the common centerline. A first and a second torsion spring mount around the second shaft adjacent to the first and second bushing, respectively, and each has a pair of legs extending tangentially therefrom, attachable to the frame or respective bushing and forming a substantially planar profile. Each torsion spring biases the second shaft toward the first shaft along the common centerline and, as a media sheet moves between the first and second shafts, allows the second shaft to move within the cradles radially away from the first shaft along the common centerline.

Abstract: A method of producing a catalyst composition is provided, the method comprising mixing (i) a first component comprising a zeolite, and (ii) a second component comprising a homogeneous solid mixture containing at least one catalytic metal and at least one metal inorganic support, wherein the first component and the second component form an intimate mixture, and wherein the homogeneous solid mixture is produced by mixing a reactive solution comprising a precursor of the metal inorganic support and a templating agent with a precursor of the catalyst metal, and calcining the mixture to form the homogeneous solid mixture. The templating agent affects one or more of pore size, pore distribution, pore spacing, or pore dispersity of the metal inorganic support. The pores of the solid mixture produced after calcination may have an average diameter in a range of about 1 nanometer to about 15 nanometers.

Abstract: A downhole catching apparatus (20) comprises a plurality of radially moveable seat members (26) arranged circumferentially around a longitudinal axis, wherein the seat members are moveable between a radially extended configuration which permits passage of an object (64) therethrough and a radially retracted configuration which permits an object (64) to be caught by the apparatus. A releasable lock arrangement (44) is provided for releasably retaining the seat members in the radially extended configuration.

Abstract: A downhole arrangement (32) comprises first (34) and second (41) members, a lock profile (4) fixed relative to one of the first and second members, and a lock member (10) for engaging the at least one lock profile. A release member (40) is provided which is moveable to selectively lock the lock member in engagement with the lock profile so as to selectively secure the second member relative to the first member. Such a downhole arrangement may permit a releasable connection between the first and second members.

Abstract: Embodiments of methods and systems related to operating a mobile asset are provided. In one example, a method for operating a mobile asset includes supplying an engine with a fuel controller a first amount of a first fuel and a second amount of a second fuel and combusting the first fuel and the second fuel at a fuel combustion ratio in at least one cylinder of the engine, the first amount and the second amount being selected based on route information for a route along which the mobile asset is operable to travel and a projected exhaustion of the first fuel that does not precede a projected exhaustion of the second fuel, wherein the mobile asset is unable to operate with the second fuel alone.

Abstract: A method of actuating at least one of a plurality of downhole tools (10) connected to at least one hydraulic fluid line (L1, L2) is disclosed. The method includes the steps of: a) providing each of the downhole tools with a control unit (20) comprising a timer which permits fluid communication between the at least one hydraulic fluid line and the downhole tool during a window of time; and b) controlling the pressure in the at least one hydraulic fluid line for at least a sufficient period of time required to at least actuate the said downhole tool, wherein the said sufficient period of time coincides at least partially with the said window of time.

Abstract: A mechanical counting device for actuating a plurality of output devices, the device comprising: linear indexing means adapted to count a plurality of actuating signals and to cause actuation of the output devices when a predetermined number of actuating signals for each output device has been received, wherein the mechanical counting device is adapted to cause actuation of a particular device when a different predetermined number of actuating signals has been received such that the output devices are sequentially actuable.

Abstract: A system for reducing emissions in an engine is provided. The system includes a primary fuel tank having a primary fuel. The system also includes a secondary fuel tank having a secondary fuel. The system further includes a separator in fluid communication with the secondary fuel tank or the primary fuel tank or both the secondary fuel tank and the primary fuel tank, the engine and a hydrocarbon-selective catalytic reduction subsystem. The subsystem separator separates a less volatile portion of the secondary fuel or the primary fuel from a more volatile portion, said less volatile portion of the secondary fuel or the primary fuel in the separator is routed to the hydrocarbon-selective catalytic reduction subsystem and said more volatile portion of the secondary fuel or the primary fuel in the separator is routed to the engine.

Abstract: The switching device comprises an electronic switch embedded within a downhole tool (100) and an activator for remote switching of the electronic switch. The activator may be a handheld unit that is used at the surface of the wellbore by an operator or may be a wireline run unit. The activator permits wireless and contactless activation of the electronic switch without the need for mechanical switches which could provide a point of failure for the downhole tool. The electronic switch comprises an electronics module and a power source such as one or more batteries wherein in the active configuration, the switch can allow electrical connection between the electronics module and the power source and in the inactive configuration, the switch prevents electrical connection between the electronics module and the power source.

Abstract: Disclosed is a device for the transport of temperature sensitive products including an insulated container, an insulated lid, a fastener to secure the lid to the container, an active heat exchanger, a thermal circuit to circulate heat exchange, a temperature sensor read by a temperature regulating circuit that maintains a temperature range, a power source, and a support frame that arranges the elements of the device with the overall center of mass at a location adapted for transport and storage of the device. Disclosed is also a method of transport for temperature sensitive products including securing the temperature sensitive product within an insulated container with a lid, removing heat from the container to maintain a temperature range, strapping the device onto the user's back and adjusting to the shape of the user, freeing both hands during transport of the device, and minimizing hindrances to user mobility caused by the device.

Abstract: A shelf has a front edge with reduced vertical dimension whereby the shelf appears to be very thin when viewed from the front. The shelf includes opposite end portions that are configured to engage spaced apart vertical support surfaces to thereby support the shelf. The shelf includes a generally planar upper portion and a lower portion structure having a generally planar horizontal rear portion and an angled front portion that extends forwardly and upwardly to provide a thin front edge of the shelf.

Abstract: A system for engineering and detailing joints in a steel structure includes a compute device that is electronically linked with a web-enabled server. In use, the system engages in an automated process of connecting the various joints in the steel structure by first collecting basic connection preferences via the compute device. Additionally, raw data is extracted from a computer model of the steel structure on the compute device. Using the connection preferences and raw data, the server analyzes framing interrelationships and engineers the connection details for each joint based upon connection preferences and load requirements. Taking into account the connection details of other local joints in the steel structure, the server utilizes an iterative engineering process to ensure that the connection details satisfy structural loads in a cost-effective fashion. Upon completion, the engineered connection details are uploaded back into the computer model of the steel structure on the compute device.

Abstract: A downhole apparatus (10) for use in activating a downhole tool (T). The apparatus (10) comprises a seat (18) configured to receive an object, such as a ball (16). The seat (18) comprises a convex object engaging surface (24) for engaging the object.

Abstract: The invention relates to a new method of determining in a sample the presence, absence or concentration of one or more target analytes, such as micro-ribonucleic acids (microRNAs or miRNAs). The invention may therefore relate to a multiplex assay for determining the presence or absence of each target analyte in a group of multiple analytess. The invention uses one or more probes comprising a quadruplex and transmembrane pores.

Abstract: A nitrogen oxide (NOx) abatement system is provided. The system includes a power generation device for generating power from a hydrogen-element containing fuel, an exhaust conduit in flow communication with an exhaust stream containing NOx which comes from the power generation device, a plasma reactor for reforming a portion of the hydrogen-element containing fuel with nitrogen to produce ammonia, and a NOx abatement reactor containing ammonia selective catalytic reduction (NH3-SCR) catalyst for receiving the exhaust stream and the ammonia and reducing NOx in the exhaust stream by causing the NOx to react with the ammonia to form nitrogen.

Abstract: Embodiments of methods and systems related to operating a mobile asset over a fixed route are provided. In one example, an engine system is provided. The example engine system includes a fuel controller configured to adjust a first amount of at least one of a first fuel of a plurality of fuels delivered to an engine and a second amount of a second fuel of the plurality of fuels responsive to at least one of fuel market information for the plurality of fuels or route information about a fixed route along which a mobile asset powered by the engine is operable to travel.

Abstract: A system (10,100) for isolating a wellbore (12,112) having a fluid flow passage (18,118) extending from surface to a subterranean location has a first, downhole, valve (20,120) and a second, uphole, valve (22,122). The downhole valve (20,120) is located in the wellbore (12,112) at a first subterranean location and the uphole valve (22,122) is located in the wellbore (12,112) at a second subterranean location spaced from the first valve (20,120). Downhole valve (20,120) is operable between a first configuration which permits access through the flow passage (18,118) and a second, well isolation, configuration which isolates the flow passage (18,118) below the valve (20,120). Uphole valve (22,122) is operable between a first configuration which permits access therethrough and a second, isolation, configuration which provides an isolated or isolatable volume (24,124) between the first and second valves (20, 22,120,122).