Abstract: An example method includes at least partially positioning within a wellbore an optical fiber of a distributed acoustic sensing (DAS) data collection system. Seismic data from the DAS data collection system may be received. The seismic data may include seismic traces associated with a plurality of depths in the wellbore. A quality factor may be determined for each seismic trace. One or more seismic traces may be removed from the seismic data based, at least in part, on the determined quality factors.

Abstract: Compounds for use The invention relates to a combination comprising (i) a compound A comprising a mitochondrial targeting group linked to a group capable of releasing hydrogen sulfide or a pharmaceutically acceptable salt thereof or a prodrug thereof, an inhibitor of the thioredoxin antioxidant system or a pharmaceutically acceptable salt thereof or a prodrug thereof, and/or a nitroxide or a pharmaceutically acceptable salt thereof or a prodrug thereof; and (ii) a photosensitizer or photosensitizer precursor; for use in photodynamic therapy

Abstract: A system includes a light source, optical fiber coupled to the light source, one or more interferometers coupled to the optical fiber, wherein each interferometer of the one or more interferometers comprising a gauge length, a photodetector assembly coupled to the optical fiber, and an information handling system. The photodetector assembly is configured to detect backscattered light from the optical fiber and generate signals based on the detected backscattered light. The an information handling system is configured to receive the signals from the photodetector assembly, apply a de-convolution operation to the signals based on the gauge lengths of the one or more interferometers, and store the de-convolved signals.

Abstract: A vehicle communication network security system) includes one or more processors configured to be disposed onboard a vehicle system traveling together along a route. The processors examine one or more characteristics of an incoming data signal received by the processors from a communication device disposed onboard the vehicle system. The processors determine whether the incoming data signal is a secure data signal or an insecure data signal based on the one or more characteristics, communicate the incoming data signal to one or more onboard systems of the vehicle system for use by the one or more onboard systems in controlling operation of the vehicle system responsive to determining that the incoming data signal is the secure data signal, and prevent the incoming data from being communicated to the one or more onboard systems responsive to determining that the incoming data signal is the insecure data signal.

Abstract: An example system for noise removal in distributed acoustic sensing data may include a distributed acoustic sensing (DAS) data collection system and an information handling system coupled thereto. The information handling system may receive seismic information from the DAS data collection system. The seismic information may include seismic traces associated with a plurality of depths in the wellbore. The information handling system may also generate a noise pilot trace by stacking one or more of the seismic traces, and subtract the noise pilot trace from the seismic information received from the DAS data collection system.

Abstract: Systems, methods, and software for determining properties of a medium surrounding an exterior portion of a well casing are described. In some aspects, the properties of the medium are determined based on measurements of detected acoustic energy and distances between one or more acoustic transmitters and two or more acoustic receivers. The measurements are obtained based on operating the transmitters and the receivers within a wellbore that includes the well casing.

Abstract: Racks are used to carry cargo on top of vehicles. Racks include crossbars and assemblies configured to secure specific cargo items to the crossbars. Clamps for connecting cargo-specific assemblies to the crossbars, include first and second jaws, and an adjustment device for selectively controlling horizontal relative movement between the jaws.

Abstract: A battery life extender (12) for a portable lighting device (10) employs a reconfigurable mechanism operable to selectively electrically isolate one or more batteries (20) from a circuit having a parasitic power drain. For example, a lighting device (10) includes a light generating element (14), at least one battery (20), a user operated switch (16) configured to control delivery of electrical power from the at least one battery (20) to the light generating element (14), and a housing assembly (18) supporting the at least one battery (20) and the light generating element (14). The user operated switch (16) can impart a parasitic power drain. The housing assembly (18) is reconfigurable to: (a) a first configuration in which the user operated switch (16) is electrically connected to the at least one battery (20), and (b) a second configuration in which the at least one battery (20) is electrically isolated and the at least one battery (20) is retained by the housing assembly (18).

Abstract: A crossbar-to-vehicle coupler may include an intra-coupler toe adjustment mechanism. The toe adjustment mechanism may include a pair of structural frames connected at a pivot joint. In some examples, the frames may be secured by a securement mechanism and/or limited in rotation by a mechanical stop. In some examples, an outer housing of the coupler may be fixed to only one of the two frames. A detent mechanism may be provided, including the outer housing and one of the two frames.

Abstract: A crossbar clamp actuator of a crossbar-to-vehicle coupler may include a horizontally traveling wedge block having a ramped, downward-facing first slide surface, and a wedge follower having a second slide surface in frictional contact with the first slide surface of the traveling wedge block. Substantially horizontal repositioning of the traveling wedge block may cause the ramped first slide surface to urge the wedge follower downward, thereby actuating a crossbar clamp.

Abstract: Rack systems are disclosed for coupling accessories to crossbars on top of a vehicle. A coupling device may include a flexible strap member adjustably anchored at one end of a body. The strap member may be connected to the other end of the body and tightened. A mounting assembly may be provided on the top side of the body for connection to a cargo-specific carrier or accessory. A coupling device may also include a flexible fitting member configured to grip a round or rectangular crossbar. A cap member may be configured to be mounted on the fitting member and have one or more ramp surfaces which form a sliding interface with a corresponding surface on the fitting member, thereby providing a closing or tightening effect on the fitting member with respect to the crossbar. Other coupling devices are configured to grip or clamp a t-slot in the crossbar.

Abstract: A rack for carrying cargo on top of a vehicle that may include a crossbar and a pair of coupler assemblies for connecting opposing ends of the crossbar to raised rails on top of the vehicle. Each coupler assembly may include a body, a securing assembly to secure the body to the raised roof rail, and a crossbar clamp, where the securing assembly and the crossbar clamp are independently adjustable.

Abstract: A selectable pitch crossbar-to-vehicle coupler may include a crossbar clamp having a first mating surface that is selectively receivable on a second mating surface of the coupler in a plurality of discrete orientations. Each of the discrete orientations may correspond to a respective angle of the crossbar relative to the coupler. The angle may be a pitch angle.

Abstract: A slotted crossbar may include an upper slot and a lower slot running continuously across the entire length of the crossbar. Internal channels associated with the upper and lower slots may be structurally independent, such that a floor of the upper channel is spaced from a ceiling of the lower channel. An illustrative slotted crossbar may be manufactured using an aluminum extrusion process.

Abstract: A coupling assembly for connecting a rooftop cargo carrying system to a vehicle may include a coupler body including a crossbar clamp configured to be coupled to a crossbar. The crossbar may have a long axis oriented transverse to a direction of vehicle travel. The coupling assembly may include a base portion configured to abut a roof of the vehicle and a clip retention and adjustment assembly. The clip retention and adjustment assembly may include (a) a carriage pivotally mounted to the coupler body and configured to rotate around a rotation axis oriented parallel to the direction of vehicle travel, the carriage having a slot for receiving a clip along a translation axis perpendicular to the rotation axis, (b) a catch configured to releasably engage an aperture in the clip, (c) a first actuator configured to rotate the carriage around the rotation axis, and (d) a second actuator configured to move the catch and the clip relative to the coupler body along the translation axis.

Abstract: In accordance with embodiments of the present disclosure, systems and methods for downsampling DAS data in a way that enables accurate interpretation of acoustic events occurring in the data are provided. Such methods may be particularly useful when interpreting large sets of data, such as DAS VSP data collected during hydrocarbon recovery operations. The methods generally involve identifying data channels affected by noise from a DAS data set, and then interpolating from the surrounding data. This may improve the quality of the resulting downsampled data, with respect to the signal to noise ratio, compared to what would have occurred by merely decimating unwanted data channels. In addition, a priori information about channel fading, the desired downsampling rate, and the slowest expected elastic waves may be used to filter the DAS data. This may achieve a higher signal-to-noise ratio in the downsampled data.

Abstract: A battery life extender for a portable lighting device employs a reconfigurable mechanism operable to selectively electrically isolate one or more batteries from a circuit having a parasitic power drain. For example, a lighting device includes a light generating element, at least one battery, a user operated switch configured to control delivery of electrical power from the at least one battery to the light generating element, and a housing assembly supporting the at least one battery and the light generating element. The user operated switch can impart a parasitic power drain. The housing assembly is reconfigurable to: (a) a first configuration in which the user operated switch is electrically connected to the at least one battery, and (b) a second configuration in which the at least one battery is electrically isolated and the at least one battery is retained by the housing assembly.

Abstract: A system includes a light source, optical fiber coupled to the light source, one or more interferometers coupled to the optical fiber, wherein each interferometer of the one or more interferometers comprising a gauge length, a photodetector assembly coupled to the optical fiber, and an information handling system. The photodetector assembly is configured to detect backscattered light from the optical fiber and generate signals based on the detected backscattered light. The an information handling system is configured to receive the signals from the photodetector assembly, apply a de-convolution operation to the signals based on the gauge lengths of the one or more interferometers, and store the de-convolved signals.

Abstract: Racks are used to carry cargo on top of vehicles. Racks include crossbars and assemblies configured to secure specific cargo items to the crossbars. Clamps for connecting cargo-specific assemblies to the crossbars, include first and second jaws, and an adjustment device for selectively controlling horizontal relative movement between the jaws.

Abstract: Rack systems are disclosed for coupling accessories to crossbars on top of a vehicle. A coupling device may include a flexible strap member adjustably anchored at one end of a body. The strap member may be connected to the other end of the body and tightened. A mounting assembly may be provided on the top side of the body for connection to a cargo-specific carrier or accessory. A coupling device may also include a flexible fitting member configured to grip a round or rectangular crossbar. A cap member may be configured to be mounted on the fitting member and have one or more ramp surfaces which form a sliding interface with a corresponding surface on the fitting member, thereby providing a closing or tightening effect on the fitting member with respect to the crossbar. Other coupling devices are configured to grip or clamp a t-slot in the crossbar.