Abstract: A vertical charge ordered transistor is disclosed. A thin charge ordered layer is employed as a tunnel barrier between two electrodes. A gate-induced accumulation of charge destabilizes the charge ordered state around the circumference of the device, opening up a parallel ohmic conduction channel, which leads to an exponential increase in source-drain current. VCOT devices have the potential to exhibit very large on/off ratios, low off-state currents, and sub-threshold slopes below 60 mV/dec.

Abstract: A variable vane assembly for a gas turbine engine having an actuating system including a rotatable face gear and a respective pinion engaged to and extending transversely from the end of each of the moveable vanes. The teeth of each pinion define land surfaces angled with respect to adjacent ones of the land surfaces of the teeth of the face gear meshed therewith. A smallest axial distance between the adjacent land surfaces of the meshed pinion and face gear teeth define a backlash of the actuating system. At least one shim has a thickness adjusting an axial distance between the pinion and the face gear to set the backlash to a predetermined value. An engine with a compressor with a variable vane assembly and a method of adjusting angular variance in an actuating system for variable vanes are also discussed.

Abstract: A connector assembly for variable inlet guide vanes in a compressor case of a gas turbine engine comprises an annular case insert having a plurality of circumferentially distributed open-ended receptacles. The annular case insert is sized so as to be received inside a compressor case, with the plurality of circumferentially distributed open-ended receptacles being in register with holes in the compressor case. Bushings have an outer diameter sized to be received in a respective one of the receptacles of the annular case insert, and an inner diameter adapted to receive a connector portion of a vane. Sets of the bushing and the connector portion of a vane in one of the receptacles forming a rotational joint. A method for installing vanes in a compressor case is also provided.

Abstract: A test circuit for measuring a gate delay as a function of stress is disclosed. The test circuit includes an oscillator, a reference gate chain, a test gate chain, and a counter. The counter measures the difference in propagation delay between the test chain and the reference chain in calibrated oscillator cycles. Differences in test gate delay as a function of applied stress may be measured within the calibration accuracy of the oscillator frequency. The use of the reference gate chain allows a simpler unipolar counter.

Abstract: A circuit for reducing jitter in a digital signal is provided, comprising a clock and data recovery stage operative to receive an input data signal and generate in response thereto a recovered data signal, a recovered clock signal, and an unfiltered interpolator code; a filter stage operative to receive the unfiltered interpolator code and generate in response thereto a filtered clock signal; and a memory component operative to receive the recovered data signal, the recovered clock signal, and the filtered clock signal; sample the recovered data signal using the recovered clock signal; store the resulting sampled bits; and generate an output data signal by selecting stored bits using the filtered clock signal.

Abstract: An apparatus for validating data received in relation to a data input procedure concerning a medical procedure or a patient, wherein the data comprises a first value for a first variable and a second value for a second variable, comprises a likelihood unit configured to use a probabilistic data model to determine a likelihood for the second value in dependence on the first value and a notification unit configured to provide a notification to a user in dependence on the determined likelihood for the second value.

Abstract: The present invention provides an improved synthesis of a class of steroid saponins. Furthermore, the present invention provides a method of selectively discriminating between the C2 and C3 hydroxyl groups of a mono-glycosylated steroid saponin—a key step in the preparation of this class of compounds. Additionally, the present invention provides a range of steroid saponin derivatives, and methods of making them.

Abstract: The disclosure provides granular forms of porous biomaterials and methods for forming and applying these biomaterials, including uses to promote vascularization and tissue ingrowth.

Abstract: A vertical charge ordered transistor is disclosed. A thin charge ordered layer is employed as a tunnel barrier between two electrodes. A gate-induced accumulation of charge destabilizes the charge ordered state around the circumference of the device, opening up a parallel ohmic conduction channel, which leads to an exponential increase in source-drain current. VCOT devices have the potential to exhibit very large on/off ratios, low off-state currents, and sub-threshold slopes below 60 mV/dec.

Abstract: In a bi-directional embodiment, an authorization transponder 114 coupled to the mobile device 128 transmits an interrogating message, which includes a UID 116 associated with the mobile device, to a nearby wireless key 100. The wireless key compares this received UID 116 with the one or more UID's 102 stored on the wireless key, and if a match is detected, sends the wireless key's UID or encrypted variant thereof to the interrogating authorization transponder 114. On receiving the UID from the wireless key 100 and determining that it matches the authorization transponder UID 116, a command is sent from authorization transponder 114 to mobile device 128 enabling some or all operations of mobile device 128.

Abstract: Circuitry and methods for measuring capacitive mismatch with improved precision. The capacitors under measurement are connected in series in a voltage divider, with the node common to both capacitors connected to the gate of a source follower transistor. In one disclosed embodiment of the invention, a ramped voltage is applied to the drain of the source follower transistor simultaneously with the ramped voltage applied to the voltage divider; the slope of the ramped drain voltage is at the nominal slope of the voltage at the common node of the voltage divider. In another embodiment, a second transistor in saturation has its gate coupled to the source of the source follower device, and its source connected to the drain of the source follower device in series with a constant voltage drop. The drain-to-source voltage of the source follower device is thus held constant in each embodiment, improving precision of the measurement.

Abstract: A silicon on insulator (SOI) multi-gate field effect transistor electrically Programmable Read-Only Memory (MuFET EPROM) includes a substrate having a dielectric surface. A first semiconducting region is in or on the dielectric surface. A source region, a drain region and a channel region interposed between the source and drain are formed in first semiconducting region. A gate dielectric layer is on the channel region. At least a second semiconducting region in or on the dielectric surface is spaced apart from the first semiconducting region. A first electrode layer comprises a first electrode portion including a transistor gate electrode and a control gate electrode electrically isolated from one another. The transistor gate overlies the channel region to form a transistor. The control gate extends to overlay a portion of the second semiconducting region.

Abstract: A porous electrode for a flow battery includes a first layer and a second layer. The first layer has at least one of a different catalytic property or a different permeability than the second layer.

Abstract: A connector assembly for variable inlet guide vanes in a compressor case of a gas turbine engine comprises an annular case insert having a plurality of circumferentially distributed open-ended receptacles. The annular case insert is sized so as to be received inside a compressor case, with the plurality of circumferentially distributed open-ended receptacles being in register with holes in the compressor case. Bushings have an outer diameter sized to be received in a respective one of the receptacles of the annular case insert, and an inner diameter adapted to receive a connector portion of a vane. Sets of the bushing and the connector portion of a vane in one of the receptacles forming a rotational joint. A method for installing vanes in a compressor case is also provided.

Abstract: A ferrule for a conduit fitting includes in one embodiment a generally annular body comprising a cylindrical interior wall, a rearward portion with a frusto-conical recess that presents a camming surface, and a tapered outer surface. The tapered outer surface extends radially outwardly from a forward portion of the generally annular body towards the rearward portion, with the rearward portion further comprising an outer wall portion that tapers radially inwardly at an angle ? towards a back end of the annular body.

Abstract: Here, an apparatus is provided. The apparatus comprises a first supply rail, a second supply rail, a first ambipolar transistor (which is coupled to the first supply rail at its drain and which receives a reference voltage at its gate), a second ambipolar transistor (which is coupled to the first supply rail at its drain and which receives an input signal at its gate), a current source (which is coupled between the sources of the first and second ambipolar transistors and the second supply rail), and an output circuit (which is coupled to drain of the first ambipolar transistor). In operation, the output circuit provides an output signal having a frequency that is about twice the frequency of the input signal.

Abstract: A turbofan engine comprising an annular inner wall surrounding tips of the fan blades, a layer of insulating material surrounding the inner wall, and an outer casing including an annular outer wall surrounding the insulating material and concentric to the inner wall and at least two annular rub elements extending radially inwardly from the outer wall through only part of a radial thickness of the layer of insulating material, at least two of the rub elements being in axial alignment with the blade tips at every point around a circumference of the fan, each rub element having a radially inner end spaced apart from the inner wall and made of a material harder than that of the blades, and a containment fabric layer wrapped around a support structure of the outer wall.

Abstract: A semiconductor device has a programming circuit that includes an active device and a programmable electronic component. The programmable electronic component includes a carbon nanotube having a segment with an adjusted diameter. The programmable electronic component has a value that depends upon the adjusted diameter. The programming circuit also includes interconnects that couple the active device to the programmable electronic component. The active device is configured to control a current transmitted to the programmable electronic component.

Abstract: The disclosure provides granular forms of porous biomaterials and methods for forming and applying these biomaterials, including uses to promote vascularization and tissue ingrowth.

Abstract: The invention provides crosslinked porous biomaterials and methods for forming crosslinked porous biomaterials. The crosslinked porous biomaterials of the invention comprise a biocompatible polymer scaffold defining an array of pores, wherein substantially all the pores have a similar diameter, wherein the mean diameter of the pores is between about 20 and about 90 micrometers, wherein substantially all the pores are each connected to at least 4 other pores, and wherein the diameter of substantially all the connections between the pores is between about 15% and about 40% of the mean diameter of the pores. The invention also provides implantable devices comprising a layer of a biomaterial, and methods for promoting angiogenesis in and around an implantable biomaterial.