摘要:
Methods are described for improving flow of oil containing fluids through vessels, pipelines, heat exchangers, and other equipment. Polymeric surfactants with lipophilic head groups and long hydrophilic poly(ethene oxide) tails are added to the fluid to coat the oil and metal surfaces with drag reducing aqueous filaments, allowing the oil to slip past those surfaces without sticking and with little resistance. Such surface coatings also promote coalescence of viscous emulsions of water-in-oil or oil-in-water without creating oil-wet flow blocking residues on stationary surfaces. Such fouling obstructs the flow of oil and water and results in both material and energy losses.
摘要:
A small-scale, batch-wise device to simulate high-shear, short-duration emulsification of fluids from various industrial processes at elevated temperatures and pressures for the purpose of determining the quality and stability of those emulsions under different conditions and with different additives. A threaded, transparent tube capable high temperature and pressure is fitted with a threaded bearing with a shaft sealed gas tight at two points with spring-loaded, internally-facing, open rings. A socket head on the external end of the shaft held on a high-speed motor-drive rotates mixing blades on the internal end of the shaft. Process fluids and additives are added to the tube with a vaporizing liquid. The tube is sealed, heated to the process temperature under pressure, then inverted onto the motor drive, by which the blades are rotated at high-speed for a short duration. The tube is righted and the emulsion observed over time at process temperature under pressure.
摘要:
Apparatus and articles of manufacture are provided for governing the transfer of data characterizing a user's behavior, physiological parameters and/or psychological parameters. One embodiment provides a computer readable storage medium containing a program which, when executed, performs an operation for handling a request, from a requesting application, for emotion data characterizing an emotional state of a user. A firewall ruleset defining rules governing the transfer of the emotion data to requesting applications is accessed to determine whether to provide the emotion data the requesting application. The request is denied if the firewall ruleset rules are not satisfied.
摘要:
Amines or ammonia and amines may be used to enhance recovery of heavy hydrocarbons. The amines or ammonia and amines alone or with water, steam or an oil solvent are combined with the heavy hydrocarbons to promote the transport of the heavy hydrocarbons. The amines or ammonia and amines may be injected downhole or admixed with heavy hydrocarbon containing ore on the surface, optionally with water or steam. Ammonia may be used alone with high quality steam.It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要:
A computer system and storage medium that in an embodiment count the number of times that a file or registry entry is added, changed, or deleted at clients in a network. If the count exceeds a threshold, then a warning is sent to the clients. The warning may prompt the clients to delete or rename the file or registry entry, run an anti-virus program, quarantine the file or registry entry, or issue a message. In this way, viruses may be detected at clients.
摘要:
A bait hook for constructing a stinger rig includes a hook proximal end including a primary leader engaging first ring eye; a hook shank including a shank connecting segment extending distally from the first ring eye and a shank hook segment arching laterally from the shank connecting segment, and a hook distal end; and a second ring eye extending from the hook shank for engaging a trailer leader for connecting the bait hook to a trailer bait hook.
摘要:
Methods and apparatus are provided for reaction wheel (RW) assemblies for spacecraft. The apparatus comprises a M/G coupled to an inertia wheel and a controller coupled to the M/G that, in response to commands it receives, couples power to or from an M/G of another RW assembly over a shared transfer connection (VXFR), so that one M/G acts as a generator powering another M/G acting as a motor. The controller compares generator voltage VGEN to the BEMF of the motor on VXFR and reconfigures a multi-winding M/G or steps-up the generated voltage to maintain VGEN>VXFR to maximize direct energy transfer from one RW to the other as long as possible. When VGEN declines sufficiently, the controller can couple the motor to the spacecraft power bus and/or the generator to a power dump so as to continue to provide the commanded torque if needed. Operation is automatic.
摘要:
A magnetostrictive fuel level probe includes a spring-loaded foot. The probe shaft of the fuel level probe moves up and down within the spring-loaded foot as a function of fuel density. The spring-loaded foot includes a reference magnet whose height relative to the bottom of a fuel storage tank is fixed. Currents generated by the fuel level probe allow measurement of how much of the fuel level probe is positioned above the reference magnet, and from this measurement, the buoyancy of the fuel level probe may be measured. From the buoyancy of the fuel level probe, the fuel density may be calculated.
摘要:
An apparatus for vertically adjusting a saw box of a gang saw includes rotatable members. When the rotatable members are selectively rotated, actuator arms coupled to the base of the saw box are translated such that the saw box is translated substantially vertically so as to center upper and lower saw gangs with the center of a workpiece being linearly fed into the saw box upon actuating instructions from an optimizer communicating with an upstream scanner.
摘要:
A device for positioning sawguides for circular gang saws includes a first shaft rotatable about a first axis, an annular gear having an outer surface and a concentric threaded inner surface and rotatable in a first plane about a second axis, the first plane generally perpendicular to the second axis, the first shaft rotatably engagable with the outer surface of the annular gear wherein rotation of the first shaft about the first axis rotates the annular gear about the second axis, the annular gear journalled on and coaxial with a second shaft lying along the second axis, a collar slidably mounted on the second shaft and adapted for non-rotational longitudinal sliding along the second shaft, the collar having an outer threaded surface concentric with the threaded inner surface on the annular gear for journalled threaded engagement therein whereby rotation of the annular gear by the first shaft causes longitudinal translation of the collar along the second axis relative to the annular gear, first and second pairs of sawguides slidably mounted on the second shaft for longitudinal sliding thereon on opposed sides of the annular gear and the collar, the first pair of sawguides adjacent the annular gear, the second pair of sawguides adjacent the collar, and an actuator for urging the first and second pairs of sawguides slidably towards each other along the second shaft against the annular gear and the collar respectively, whereby the longitudinal translation of the collar along the second shaft relative to the annular gear causes relative longitudinal translation between the first and second pairs of sawguides on the second shaft.