Abstract: A system for identifying spoofed navigation signals includes a multi-element antenna configured to receive a plurality of navigation signals. The system also includes at least one processor configured to obtain a gain vector for each of the navigation signals and analyze the gain vectors for the navigation signals to determine whether one or more of the navigation signals are spoofed. To analyze the gain vectors for the navigation signals, the at least one processor may be configured to (i) determine whether at least a specified number of the navigation signals have substantially the same gain vectors and (ii) in response to determining that at least the specified number of the navigation signals have substantially the same gain vectors, determine that the navigation signals having substantially the same gain vectors are spoofed.

Abstract: The embodiments herein relate to formation testers having reactive filter materials for detecting analytes in subterranean formation operations. The formation include a body having an outlet, a probe extendable from the body and having a sealing pad and a probe snorkel tube, a flow line within the body, wherein the flow line has an entry end connectable to the probe snorkel tube and an exit end connectable to the outlet in the body, a sample chamber fluidically connectable to the flow line downstream of the entry end of the flow line, and a reactive filter material in the flow line. The reactive filter material sorbs an analyte in a wellbore fluid.

Abstract: Methods and devices are provided for protecting the cerebrovascular circulation from embolic debris released during an index procedure. An embolic protection filter is delivered in a reduced profile configuration via an access catheter, and positioned in the aorta spanning the ostia to the three great vessels leading to the cerebral circulation. An index procedure catheter is thereafter advanced through the same access catheter to conduct the index procedure. The index procedure may be a transcatheter aortic valve replacement. A pore distribution in the filter blocks passage of debris greater than a predetermined threshold, minimizes total cumulative volume of debris passing through the filter and minimizes blood pressure drop across the filter.

Abstract: A sole structure for an article of footwear includes a midsole having a top surface, a bottom surface opposite the top surface, and a peripheral surface extending between the top surface and the bottom surface. The bottom surface includes a recess defining a first opening in the peripheral surface. The sole structure for an article of footwear also includes an insert disposed within the recess and including a first material having a first gloss unit value and a second material disposed on an outer surface of the first material and having a second gloss unit value. The second material is at least partially disposed within the first opening.

Abstract: A system for directly tracking human activity is described. The system comprises a plurality of interactive activity objects such as, construction toys, that interact with each other in one or more activities involving physical manipulation of the interactive activity objects by a person; at least one wearable device associated with the person to track the person's activity by sensing the person's movements, to obtain data directly relating to the person's activity; and a database to record the person's direct activity and at least some of the person's direct physical manipulation of with the interactive activity objects.

Abstract: Aspects and features relate to computationally reducing the size or complexity of a database in order to improve the speed and efficiency with which such a database is processed by a computing system in order to identify investigators for clinical trials. In some aspects, a processing device performs operations including identifying data sources for geographically clustered data containing corresponding descriptors for database records. The operations further include formatting the corresponding descriptors to produce standardized, corresponding descriptors, and matching each standardized, corresponding descriptor to produce a record score for the descriptor. The record scores can be combined to produce an overall score for each database record and the database record can be selected and written to the data store based on the overall score.

Abstract: A system for conducting real-time chemical analysis of deposits is provided. The system includes an electromagnetic radiation source positioned on a downhole tool that emits electromagnetic radiation to a surrounding downhole environment within a field of view of interest. The system also includes a multivariate optical element positioned on the downhole tool that has optical filters configured to receive reflected radiation from the field of view of interest and generate respective filtered radiation signals. Each of the optical filters has a different transmission function that corresponds to a respective chemical species of interest. The system also includes an image sensor positioned on the downhole tool that detects each of the respective filtered radiation signals from the multivariate optical element. The image sensor provides image information of the field of view of interest that indicates a presence of at least one chemical species of interest located in the surrounding downhole environment.

Abstract: A progressive cavity pump includes a sealed drive between the rotor and universal joint. The universal joint includes a socket configured to receive a drive shaft of the rotor. A cover, such as a locking nut, is disposed over the connection between the rotor and universal joint. Seals are retained in place by the locking nut to prevent abrasive materials from entering into the interface between the rotor and the universal joint.

Abstract: A method and system for estimating clean fluid composition and properties. A method may comprise disposing a downhole fluid sampling tool into a wellbore, wherein the downhole fluid sampling tool comprises optical instrumentation, obtaining a fluid sample with the downhole fluid sampling tool, wherein the fluid sample comprises a reservoir fluid contaminated with a well fluid, identifying input parameters from at least one sensor response on the optical instrumentation, and predicting a clean fluid sample of the reservoir fluid using an asymptote of a dimensional reduction analysis and equation of state. A system may comprise a downhole fluid sampling tool and a processing unit. The downhole fluid sampling tool may further comprise an optical instrumentation operable to obtain fluid samples of a reservoir fluid contaminated with a well fluid while the downhole fluid sampling tool is disposed in a wellbore.

Abstract: A device for coating an interior surface of a housing defining a volume comprising a plurality of reactant gas sources including reactant gases for one or more surface coating processes; first and second closures to sealingly engage with an inlet and outlet of the volume of the housing to provide an enclosed volume; a delivery line fluidically coupled to the first closure and the plurality of reactant gas sources to deliver the reactant gases to the enclosed volume; and an output line fluidically coupled to the second closure to remove one or more reactant gases, byproduct gases, or both from the enclosed volume. A method for coating an interior surface of a housing is also provided.

Abstract: One or more electrospray emitters form an electrospray thruster, suitable for generating thrust for maneuvering and/or moving a structure to which the thruster is attached in three-dimensional space. The thruster includes a reservoir containing a fluid, preferably an ionic liquid (IL) fluid. Each electrospray emitter includes a dielectric, with channel(s) formed through a thickness thereof, and an extraction electrode, preferably an extraction grid, on an opposite side of the dielectric from the reservoir. Upon application of a sufficient electric potential differential between the extraction electrode and the fluid, the fluid flows through the channels from the reservoir, forms a Taylor cone at an outlet of each channel, and is ejected in the direction of the extraction grid to generate a thrust by the thruster for movement and/or maneuvering of the structure to which the thruster is attached.

Abstract: A downhole PVT tool for performing in-situ formation fluid phase behavior characterizations in a wellbore using pressure, volume, and temperature (PVT) measurements of the formation fluid while continuing to pump the formation fluids. The disclosed downhole PVT tool includes an intake mandrel and utilizes two individual pumps to split the formation fluid to perform PVT measurements during the fluid pump out. The downhole PVT tool, two-pump configuration permits a first pump to be used to pump formation fluid along a first flowpath and a second pump to be used to pump formation fluid along a second flowpath, with one or more sensors deployed along one of the flowpaths to perform fluid and/or gas phase behavior measurements to determine one or more properties of the formation fluid in-situ. The first pump may be utilized in the phase behavior analysis while the second pump simultaneously continues flow-through pumping of the formation fluid.

Abstract: A termination assembly for a heater assembly includes a plurality of resistive heaters arranged in discrete power phases, each resistive heater comprising a resistive heating element surrounded by dielectric material and a sheath. The termination assembly includes a plurality of electrically nonconductive members. Each electrically nonconductive member includes a plurality of apertures configured to receive power pins of the plurality of resistive heaters. The termination assembly includes a plurality of connectors configured to connect the power pins to the electrically nonconductive members. Each electrically nonconductive member includes a number of the plurality of connectors corresponding to a number of power pins being terminated. The termination assembly includes an electrical circuit embedded in or disposed on at least one of the plurality of electrically nonconductive members.

Abstract: A pulse rate detection device includes: a moving image obtaining device configured to obtain a moving image captured by photographing a body surface of a subject, a pulse rate obtaining device configured to obtain a pulse rate of the subject on the basis of change of a pixel value of the body surface in the moving image, a reliability obtaining device configured to obtain reliability of the obtained pulse rate; and an output device configured to output the obtained pulse rate if the obtained reliability thereof is equal to or greater than predetermined reliable criteria.

Abstract: A method, including disposing a probe of a sensor system in a wellbore to interact with a formation fluid that includes a mud filtrate and a clean fluid that includes one of a formation water, or a formation hydrocarbon fluid including at least one hydrocarbon component. The method includes collecting multiple measurements of a formation fluid from a wellbore, the formation fluid comprising a mud filtrate and a clean fluid, is provided. The clean fluid includes at least one hydrocarbon component, and the method also include identifying a concentration of the mud filtrate and a concentration of the clean fluid in the formation fluid for one of the measurements, and determining at least one hydrocarbon composition and at least one physical property of the clean fluid based on a measurement fingerprint of the hydrocarbon components. A sensor system configured to perform a method as above is also provided.

Abstract: A woven geosynthetic fabric having a weft direction and a warp direction, includes weft yarns woven in the weft direction and warp yarns woven in the warp direction interweaving the weft yarns to form a fabric having comparable modulus; the warp yarns including a high modulus monofilament yarn having a tenacity of at least 0.75 g/denier at 1% strain, at least 1.5 g/denier at 2% strain, and at least 3.75 g/denier at 5% strain as determined in accordance with ASTM International Standard 4595.

Abstract: To reduce effects of artificial alteration of measured formation pressure downhole, an iterative procedure for accurately measuring formation pressure in drawdown/buildup operations is presently disclosed. During buildup/drawdown operations, pressure measurements are taken by pressure sensors in concentric volumes sealed to the formation. After each buildup operation, pressure in the outer concentric volume is lowered using a pressure sensor therein to a progressively lower pressure until a pattern for the pressure trend stabilizes asymptotically. The true formation pressure is taken after a final buildup operation once pressure measurements stabilize.

Abstract: A capacitive trans-impedance amplifier comprising a voltage amplifier having an inverting input terminal for connection to an input current source. A feed-back capacitor is coupled between the inverting input terminal and the output terminal to accumulate charges received from the input current source and to generate a feed-back voltage accordingly. A calibration unit includes a calibration capacitor electrically coupled, via a calibration switch, to the inverting input terminal and electrically coupled to the feed-back capacitor. The calibration unit is operable to switch the calibration switch to a calibration state permitting a discharge of a quantity of charge from the calibration capacitor to the feed-back capacitor.

Abstract: A computer-implemented method that allows users evaluate the densities of images and search for abnormalities in three-dimensional space. The voxel buildup uses a series of two-dimensional images and evaluates every pixel based on the user described predetermined threshold value at runtime. A singular optimized voxel-generated mesh is spawned to represent the combined locations of every pixel.

Abstract: The disclosed embodiments include thin film multivariate optical element and detector combinations, thin film optical detectors, and downhole optical computing systems. In one embodiment, a thin film multivariate optical element and detector combination includes at least one layer of multivariate optical element having patterns that manipulate at least one spectrum of optical signals. The thin film multivariate optical element and detector combination also includes at least one layer of detector film that converts optical signals into electrical signals. The thin film optical detector further includes a substrate. The at least one layer of multivariate optical element and the at least one layer of detector film are deposited on the substrate.