Abstract: A pump system may include a pump, a driveshaft, driving equipment, and a vibration dampening assembly configured to reduce pump-imposed high frequency/low amplitude and low frequency/high amplitude torsional vibrations. The pump may have an input shaft connected to the driveshaft. The driving equipment may include an output shaft having an output flange connected to the driveshaft. The driving equipment may be configured to rotate the driveshaft to rotate the input shaft of the pump therewith. The vibration dampening assembly may include one or more flywheels operably connected to the input shaft and configured to rotate therewith.

Abstract: A method of memory-efficient prediction mode selection includes receiving, by an encoder, a coded bitstream including a current frame, determining, by the encoder, costs of a first prediction mode and a second prediction mode, wherein determining further comprises determining, for the first prediction mode, a first bit cost and a first memory cost and determining, for the second prediction mode, a second bit cost and a second memory cost, selecting, by the encoder, a current prediction mode of the first prediction mode and the second prediction mode as a function of the first bit cost, first memory cost, second bit cost, and second memory cost, and encoding, by the encoder, the current frame using the current prediction mode. The prediction mode may be informed by at least one parameter received from the decoder.

Abstract: Systems and methods to pump fracturing fluid into a wellhead may include a gas turbine engine including a compressor turbine shaft connected to a compressor, and a power turbine output shaft connected to a power turbine. The compressor turbine shaft and the power turbine output shaft may be rotatable at different rotational speeds. The systems may also include a transmission including a transmission input shaft connected to the power turbine output shaft and a transmission output shaft connected to a hydraulic fracturing pump. The systems may also include a fracturing unit controller configured to control one or more of the rotational speeds of the compressor turbine shaft, the power turbine output shaft, or the transmission output shaft based at least in part on target signals and fluid flow signals indicative of one or more of pressure or flow rate associated with fracturing fluid pumped into the wellhead.

Abstract: A video encoder is configured to encode a bitstream to be decoded by a compliant decoder receiving the bistream. The bitstream including a first coded picture having a first resolution and a second coded picture having a second resolution, wherein the first coded picture is an intra-coded picture, parameters defining a cropping window. The decoder decodes the first coded picture and stores the first picture as a reference picture, determines a scaling factor from at least one parameter in the bitstream defining the first cropping window, determines a predictor for the second picture from the reference picture and the scaling factor, decodes the second coded picture using the predictor, and outputs for display the first picture as cropped in accordance with the parameters defining the cropping window.

Abstract: A method of decoder-side synthesis of video sequences includes receiving, by an encoder, an input video, detecting, by the encoder and in the input video, a first region including synthesizable content, and encoding, by the encoder and in a bitstream, the video, wherein encoding further comprises signaling the first region.

Abstract: An apparatus for hanging decorations comprising a first member comprising at least one notch, a neck proximal the at least one notch, and a clip coupled to the neck. The clip may comprise a first prong and a second dual-layer prong, the second dual-layer prong configured such that at least a portion of the first prong fits within the channel between the first and second layers of the second dual-layer prong and forms a substantially round structure configured to house a decoration therein. The apparatus further comprises a second member extending from the neck and forming an acute angle relative to the first member, the second member comprising at least one notch, an adapter handle coupled to the second member, the adapter handle positioned substantially parallel to the first member, and a hook comprising a notch, the hook coupled to the second member and the adapter handle.

Abstract: A system and method for managing virtual queues for providing access control. A cloud-based queue service manages a plurality of queues hosted by one or more entities. The queue service is in constant communication with the entities and sensors located therein providing queue management, queue analysis, and access control to controlled systems. The queue service is likewise in direct communication with queued persons and provides an access key to a user device which can be used to access the controlled system when certain conditions are met.

Abstract: Gas detection methods, systems, and devices. The gas detection device includes a housing portion configured with at least one gas sensor, one or more processors executing instructions stored on memory to process data from the at least one gas sensor, and a communication device configured to transmit a signal regarding the processed data. The gas detection device further includes a connection component to operably position the housing portion with respect to a structure to enable the at least one gas sensor to detect a gas emitting from the structure.

Abstract: The present disclosure relates to, inter alia, a gel formulation in a package, the package may be pressurized. The formulation comprises one or more active agents and is co-mingled with a gas propellant prior to being filled under pressure into the package. The gas propellant is added in sufficient amounts to be dispersed in the formulation; the pressurized package is under sufficient pressure suitable to maintain the first gas propellant dispersed in the formulation. The pressurized package is under sufficient pressure to expel the formulation as a whipped gel formulation upon application of external force on the formulation in the package. The present disclosure also relates to, inter alia, a method of preparing the disclosed formulation; a package comprising the disclosed formulation, and a method of using the disclosed formulation.

Abstract: A sectional control funnel box (36) includes a box body having an upper receiving member (44) for receiving particulate matter, a lower manifold (46) configured to be mounted on a distribution plate (24), and a funnel mechanism (42) disposed between the upper receiving member and the lower manifold. The lower manifold includes a plurality of chutes (100) configured to direct the particulate matter to apertures (38) in the distribution plate. The funnel mechanism includes supply sections (54, 76) that include directing slots (56, 90) configured to provide the particulate matter from the upper receiving member to the chutes. An actuator (48) is attached to the funnel mechanism (42) and configured to drive the funnel mechanism between at least a first position, where a first one of the plurality of supply sections is aligned with the upper receiving member (44), and a second position, where a second one of the plurality of supply sections is aligned with the upper receiving member.

Abstract: A safety plug for a female welding lead connector configured to remain tethered to the female welding lead connector and including a male head configured in the shape of a male end of a male welding lead connector so that the male head of the safety plug can be inserted into a female welding lead connector, rotated, and secured in place inside a female welding lead connector in the same manner as a male welding lead connector.

Abstract: Embolization particles can be safely delivered to the left gastric artery of a patient by introducing the distal end of a catheter in the patient's left gastric artery, inflating a balloon located near the distal end of the catheter so that the balloon prevents blood from flowing through the left gastric artery, and injecting a mixture of particles and contrast agent into the proximal end of the catheter so that they flow through the catheter. In addition, a path is provided for blood to flow into the catheter through an opening in the sidewall of the catheter at a position that is proximal to the balloon, and out through the distal end of the catheter. This blood flow helps to carry the particles along to their destination in the distal portion of the left gastric artery. The particles are also prevented from flowing into portions of the patient's artery system that are proximal of the balloon.

Abstract: An isolation valve system, method, and apparatus are provided that can isolate a wellbore and prevent fluids from exiting the well and prevent seawater from entering the well. The system can be a two-part design in some embodiments where a shear sub is selectively interconnected to a body via shearing screws. A sufficient force on the shear sub destroys the shearing screws and the shear sub is removed from the body. This movement rotates an actuator on the body, which in turn rotates a valve in the body to provide the isolating function during routine operation of a wellbore or during an emergency.

Abstract: A system for organizing and searching a video database includes a logic circuit configured to extract, from a video, at least a video feature, generate at least a first hash value as a function of the at least a video feature, wherein generating the at least a first hash value further comprises performing a robust hash algorithm on the at least a feature, and store the video in a data structure, wherein storing the video further includes storing a representation of the video in a leaf node of the data structure and storing the at least a first hash value in a traversal index linking hash values to leaf nodes.

Abstract: Retractor assemblies and methods of using them to retract tissue. A retractor assembly as described herein may include first and second arms pivotally coupled and each arm formed of a plurality of stacked and separated plates, spaced to define a gap therebetween, providing strength while affording a reduction in weight of the retractor assembly. The retractor assembly may also include a ratcheting locking mechanism.

Abstract: An exhaust energy recovery system (EERS) and associated methods for an engine are disclosed. An embodiment of an EERS, for example, includes an inlet duct that is configured to divert exhaust gas from an exhaust duct of the engine into the recovery system and an outlet duct configured to return the exhaust gas to the exhaust duct downstream of the inlet duct. The recovery system is configured to heat components or fluids associated with engine to operating temperatures. The recovery system may be part of a mobile power system that is mounted to a single trailer and includes an engine and a power unit such as a high pressure pump or generator mounted to the trailer. Methods of operating and purging recovery systems are also disclosed.