Abstract: A gas turbine engine (10) comprises a first compressor (16), a combustor (22) and a first turbine (24) arranged in flow series. The first turbine (24) is arranged to drive the first compressor (16). The first compressor (16) has variable inlet guide vanes (38) and the first turbine (24) has variable inlet guide vanes (42). A second compressor (48) is arranged upstream of the first compressor (16). An auxiliary intake (12) is arranged upstream of the first compressor (16) and downstream of the second compressor (48). A valve (54) is arranged upstream of the first compressor (16) and downstream of the second compressor (48). The valve (54) is movable between a first position in which the second compressor (48) supplies air to the first compressor (16) and a second position in which the second compressor (48) does not supply fluid to the second compressor (16) and the auxiliary intake (12) supplies fluid to the first compressor (16).

Abstract: Storage stable multiple emulsions of a polar phase A1, a nonpolar phase B and a polar phase A2, or of a nonpolar phase B1, a polar phase A and a nonpolar phase B2, employ particulate solids smaller than 1 &mgr;m to stabilize the resulting A1/B/A2 or B1/A/B2 multiple emulsions against coalescence, with the proviso that surface-active substances are present only up to a maximum concentration of less than 0.1 times the critical micelle concentration of the surface-active substances in phase A, A1, A2. The multiple emulsions have numerous uses including controlled release of active substances from a dispersed phase.

Abstract: A base for a coin store comprises an essentially planar part for supporting a coin or coins and retaining means for retaining coins within the coin store in use, and the retaining means comprises at least one part extending essentially perpendicular to the planar part of the base.

Abstract: A gas turbine engine comprises a centrifugal compressor (4), an air diffuser (8), a heat exchanger (10), combustion apparatus (12), and first and second turbines (14,18). The combustion chamber assembly (22) comprises a primary, a secondary and a tertiary fuel and air mixing ducts (54,78,98). The compressor (4), diffuser (8), primary and secondary fuel and air mixing ducts (54,78) and turbines (14,18) all comprise means (6,8,16,20) for varying the mass flow area at their inlets such that in operation the amount of air mass through each component may be independently variable. Under part power conditions the mass flow is reduced and under full power conditions the mass flow is increased thereby maintaining a substantially constant gas cycle throughout the engine.

Abstract: A method for reducing the concentration of radioactive material in a contaminated area by removing contaminated soil from the contaminated area; determining a field survey specific activity concentration representative of the remaining soil in the contaminated area; comparing the field survey specific activity concentration with a field validation data set to determine the total concentration of contaminating radioactive material in the contaminated area and removing additional quantities of contaminated soil from the contaminated area as required. The soil area may alternatively be blended with clean soil to reduce the concentration of radioactive material in the soil or a combination of blending and removal may be used. A method for estimating the total concentration of radioactive material in a soil sample is provided.

Abstract: The object of the present invention is to provide a multimedia presentation device which, by executing a setting process for an information block, which is an address of an automatic branch, by means of an automatic discharge process for a button which stores the branch address, enables the user to understand how a branch address was selected. Command discharge condition information is stored the information block reproduction means for managing buttons which are automatically discharged at an end of a reproduction period or other such time, so that by executing a branch process by automatically selecting a button in place of a user operation, then even if there has been no user selection of a branch address before the end of the reproduction period, a branch address can be automatically selected and, by showing on the display the button which for manual selection stores a link to the same branch address, the data can be presented in a form which can readily understood by the user.

Abstract: Remotely controllable fluid flow control valves are disposed in the main wellbore and branch wellbores of a multiple well. Each flow control valve has a radio frequency range receiver, a controller and an actuator for moving a closure member to a selected position to control fluid flow in the wellbore in which the valve is disposed. A signal transmitter may be conveyed into the main wellbore by an E-line or coilable tubing and radio frequency range electromagnetic wave energy signals may be transmitted to the selected valve to effect fluid flow control within each wellbore of the multiple well. The remotely controllable valves eliminate expensive and difficult procedures associated with reentering branch wells extending from a central or main wellbore.

Abstract: Pressure and temperature signals are transmitted between a predetermined point in a wellbore and the earth's surface by an electromagnetic wave transmitter disposed in the well and connected to a bow-spring centralizer forming one contactor of a dipole and a mandrel or hanger connected to a landing nipple of a tubing string in the well whereby the other conductive path forming the other end of the dipole may be formed by a packer or similar mechanism in conductive engagement with the tubing string and the well casing. The hanger may be a lock mandrel or a suitable conventional downhole tool hanger. The electromagnetic wave transmitter may be deployed in the well and engaged with the casing by spaced-apart magnets to establish the conductive path and the dipole distance.

Abstract: A method for determining the minimum length for a fracture in a fluid-producing formation to control the production of sand therefrom wherein a plurality of critical drawdown pressures are calculated from known formation data which correspond to a plurality of different, estimated respective fracture lengths. Once the critical drawdown pressures for the reservoir are correlated with their corresponding fracture lengths, a critical drawdown curve for that particular reservoir is established. Additional sets of curves are generated from known data which when overlaid with the critical drawdown pressure curve allows a minimum length of fracture to be selected which will produce the formation at a given rate at a prescribed drawdown pressure without producing any substantial amounts of sand from the formation.

Abstract: Toxic wastes including naturally occurring radioactive materials are disposed of into subterranean earth formation zones which are bounded both above and below by zones which have higher in situ compressive stresses. The materials are prepared in a slurry of finely ground solids and a carrier liquid and are injected into a fracture created in the disposal zone by a process which includes initiating and extending the fracture with a fracturing fluid having a filter cake building solids material entrained therein to build a sealant layer on the fracture faces, The fracture fluid is followed by injection of the waste material which is followed by injection of more fracture fluid and/or a clear liquid such as fresh water or seawater to remove all toxic material from the injection well and the vicinity thereof. The fracture is then allowed to close to confine the waste material therein.

Abstract: Injection well fluid flow is measured by a device which has a running head and a body with a turbine type flowmeter interposed therein between the running head and discharge port means in the body. The running head may be interchangeable for positioning the body in selected positions in a tubing string in sealing engagement with a seating surface in the tubing string whereby fluid flow entering selected zones in communication with the injection well may be directly measured. The flow measuring device may include a signal storage or memory circuit disposed thereon for receiving and storing signals from the flowmeter.

Abstract: A computerized system and method for managing work in process is provided. An initial transaction records case specific information. The case specific information is automatically linked with a work source index which includes basic client information. An electronic file is created for each case arising out of the initial transaction record. As work is performed on the case, the system tracks its progress and providces a variety of support functions. An electronic activity log function maintains a record of key activities involved in the processing of work items. An electronic diary function provides a means for prioritizing work and for scheduling various tasks. A staff table function provides a facility for storing information relevant to office personnel. Most of the system functions are integrated with the staff table function which provides a number of security and function parameters.