Abstract: A method of generating target-oriented acquisition-imprint-free prestack angle gathers using common focus point (CFP) operators includes receiving a plurality of seismic traces associated with a target point in a reservoir. A first angle domain common image gather (ADCIG) is generated based on the received plurality of seismic traces. A plurality of synthetic traces associated with the target point is generated. A second ADCIG is generated based on the synthetic traces. An enhanced ADCIG is generated using the first ADCIG and the second ADCIG.

Abstract: A method of reducing surface-scattered noise includes receiving seismic data associated with a marine region, where the marine region includes an ocean bottom, a first zone including water above the ocean bottom, and a second zone including earth subsurface layers below the ocean bottom, and the received seismic data includes signals reflected from the earth subsurface layers and surface-scattered noise reflected from the ocean bottom and an ocean surface; determining a water velocity for the first zone; determining bathymetric values of the ocean bottom; based on the determined water velocity and the bathymetric values, determining a velocity model for the marine region; based on the determined velocity model and wavelet functions of seismic source signals, calculating the surface-scattered noise by solving a wave equation; and determining the signals reflected from the earth subsurface layers by subtracting the calculated surface-scattered noise from the received seismic data.

Abstract: A lift-type cleaning device for a floor washer, a cleaning tool for cleaning a floor is disposed on the floor washer. The lift-type cleaning device includes a bucket for containing water, a drying member and a driver. The drying member and the driver are kept static during spin-drying and are disposed in the bucket. The cleaning tool is matched with the drying member. The driver is connected with the drying member and is able to control the drying member to rise. During cleaning, the drying member is located below. During drying, the. A support base is disposed in the bucket and supports the floor washer away from a bottom of the bucket. The support base is connected with the bottom of the bucket or is connected with the driver. The driver drives the support base to rise or fall.

Abstract: A method of continuous seismic reservoir monitoring includes receiving a plurality of seismic data sets associated with a reservoir during a period, where the plurality of seismic data sets corresponds to seismic data received at different times during the period. The reservoir includes a plurality of reflectors, where each reflector has a reflection coefficient. For each of the plurality of seismic data sets, the reflection coefficients of the plurality of reflectors are determined by iteratively updating common focus point (CFP) operators associated with the plurality of reflectors and a plurality of acquisition surface locations. The reflection coefficients corresponding to different seismic data sets are compared to determine changes of the reflection coefficients during the period. The changes of the reflection coefficients are displayed.

Abstract: An apparatus and associated method are provided involving a housing having a periphery configured to operate as a second antenna, a third antenna, and a fourth antenna. The periphery includes a top wall having a first slot formed therein, a first side wall having a second slot formed therein, and a second side wall having a third slot formed therein. The top wall is arranged between the first side wall and the second side wall, and a top portion of the periphery is defined between the second slot and the third slot. The top portion is divided into a first top side portion and a second top side portion via the first slot. Further, the first top side portion operates as the second antenna, and the second top side portion operates as both the third antenna and the fourth antenna.

Abstract: A cleaning assembly including a floor scrubber and a self-cleaning device matched with the floor scrubber is provided. The floor scrubber includes a housing connected to a handle. A motor is arranged in the housing. A scrubbing disc is arranged below the housing and is driven by the motor to rotate. The self-cleaning device includes a barrel connected to a support member used for supporting the floor scrubber. A wiper member is arranged in the barrel. When the floor scrubber is placed in the barrel to be dried, the support member supports the floor scrubber, and the wiper member abuts against the scrubbing disc; and when the scrubbing disc rotates or the wiper member moves, water and/or dirt on the scrubbing disc are/is wiped off by the wiper member.

Abstract: An apparatus and associated method are provided involving a housing having a periphery configured to operate as a second antenna, a third antenna, and a fourth antenna. The periphery includes a top wall having a first slot formed therein, a first side wall having a second slot formed therein, and a second side wall having a third slot formed therein. The top wall is arranged between the first side wall and the second side wall, and a top portion of the periphery is defined between the second slot and the third slot. The top portion is divided into a first top side portion and a second top side portion via the first slot. Further, the first top side portion operates as the second antenna, and the second top side portion operates as both the third antenna and the fourth antenna.

Abstract: Common transmission points can be used to monitor a seismic reservoir. First and second common transmission points (CTPs) are received. For each of the first CTP gather and the second CTP gather, the traces before the CTP can be aggregated, and the traces crossing the CTP can be aggregates. The aggregated before CTP traces from the first CTP gather can be compared with the aggregated before CTP traces from the second CTP gather to determine a first time difference. The aggregated cross CTP traces from the first CTP gather can be compared with the aggregated cross CTP traces from the second CTP gather to determine a second time difference. A third time difference can be determined based at least partially on the first time difference and the second time difference.

Abstract: A method of generating a four dimensional seismic signal based on multiple sets of seismic data representing a subterranean formation. The method can include generating a tomographic velocity model based on a first set of raw seismic data and determining at least one Green's function based on the tomographic velocity model. The method can include generating a first image of a target region based on the first set of raw seismic data and the at least one Green's function. The method can include generating a second image of the target region based on a second set of raw seismic data and the at least one Green's function. The first and the second images can be compared, and a four-dimensional seismic signal can be determined based on the comparison.

Abstract: Techniques are described for generating seismic images based on pressure-shear (PS) wave information. Sensor data is generated by through seismic probing of an underground environment. The sensor data can include pressure (P) wave data. The sensor data is analyzed to determine PS wave data present in the sensor data. A CFP gathers spectrum is generated using the P wave velocity. An optimal curve through the CFP gathers spectrum is determined, and PS image(s) of the underground environment are generated by scanning along the optimal curve. The PS image(s) can be provided for presentation through interface(s). The generated PS wave images are correlated with P wave images, and can be plotted on the same coordinate system as P wave images.

Abstract: Provided is a method for cooling wax after coextrusion to create wax capsules. The method includes immersing a concentric nozzle of a coextruder in a container of heated alcohol. The container of heated alcohol sits in a water-ice bath to create a temperature gradient. A core material having a wax coating is extruded through a concentric nozzle to form a capsule. The capsule enters the container of hot alcohol where the wax coating is solidified. In an embodiment, the method is a continuous method including a capsule and solvent transfer system.

Abstract: A wearable wireless device is disclosed. In one embodiment the wearable wireless device includes a circuit board, a housing body housing the circuit board, the housing body having a front side and a back side, a display located at the front side of the housing body, a first antenna element electrically connected to the circuit board and located on the front side of the housing body and a second antenna element electrically connected to the circuit board and located on the front side of the housing body.

Abstract: A system (100) and method for generating machining control data of a numerical control machine tool. The system (100) comprises a server (10) and at least one terminal device (30). The server (10) is installed with computer-aided manufacturing software, a numerical control machine tool model library and a cutter and fixture library. The terminal device (30) is connected to the server (10) through the Internet (20) to generate machining program data of a part model and/or to carry out machining simulation of a part model. The method for generating machining control data of a numerical control machine tool comprises: sending a part model file to the server (10) through the Internet (20); and generating program code that can be executed by the numerical control machine tool. The system (100) and the method have the beneficial technical effects of being convenient to operate, low in cost and flexible and easy to use and so on.

Abstract: A floor sweeper includes a housing which has a garbage cavity for containing garbage. The garbage cavity has an inlet allowing the garbage to enter the garbage cavity. A sweeping roller is disposed at the inlet of the garbage cavity, is rotatably connected to the housing and is able to sweep outside garbage into the garbage cavity. A sealing plate for opening/closing the inlet is disposed at the inlet of the garbage cavity. An ejector rod is vertically and movably connected to the housing, has an upper end connected to the sealing plate and is able to move vertically to drive the sealing plate to move. When floor sweeper cleans a floor, the ejector rod abuts against the floor and moves upwards to drive the sealing plate to move to open the inlet of the garbage cavity.

Abstract: In a general implementation, systems, apparatus, and methods for AVO of imaging condition in ERTM include the described system provides for an efficient and accurate vector wavefield decomposition with a corresponding modified dot-product imaging condition of ERTM by employing a modified AVO algorithm. In some implementations, the phases of source wavelet and multicomponent records are modified using a 1/?2 filter and the amplitudes of the extrapolated wavefields are scaled using ?2 and ?2, where ?, ? and ? are the angular frequency, local P- and S-wave velocities, respectively. The results yield correct phases, amplitudes, and physical units for separated P- and S-mode wavefields. Divergence and curl operators may then be applied to the phase-corrected and amplitude-scaled elastic wavefields to extract vector P- and S-wavefields. With the separated vector wavefields, a modified dot-product imaging condition can be employed to produce PP and PS reflectivity images.

Abstract: An apparatus and associated method are provided involving a housing having a periphery configured to operate as a second antenna, a third antenna, and a fourth antenna. The periphery includes a top wall having a first slot formed therein, a first side wall having a second slot formed therein, and a second side wall having a third slot formed therein. The top wall is arranged between the first side wall and the second side wall, and a top portion of the periphery is defined between the second slot and the third slot. The top portion is divided into a first top side portion and a second top side portion via the first slot. Further, the first top side portion operates as the second antenna, and the second top side portion operates as both the third antenna and the fourth antenna.

Abstract: A method of generating target-oriented acquisition-imprint-free prestack angle gathers using common focus point (CFP) operators includes receiving a plurality of seismic traces associated with a target point in a reservoir. A first angle domain common image gather (ADCIG) is generated based on the received plurality of seismic traces. A plurality of synthetic traces associated with the target point is generated. A second ADCIG is generated based on the synthetic traces. An enhanced ADCIG is generated using the first ADCIG and the second ADCIG.

Abstract: A wearable wireless device is disclosed. In one embodiment the wearable wireless device includes a circuit board, a housing body housing the circuit board, the housing body having a front side and a back side, a display located at the front side of the housing body, a first antenna element electrically connected to the circuit board and located on the front side of the housing body and a second antenna element electrically connected to the circuit board and located on the front side of the housing body.

Abstract: An apparatus is provided including a first antenna with a top face; a bottom face; and a periphery defined by an upper portion, a lower portion, and a pair of side portions. The first slot comprises a body, a first arm, and a second arm that divides the first antenna into a first portion, a second portion, a third portion, and a fourth portion. The first portion is larger than the third portion, and the third portion is larger than the second portion and the fourth portion. Further, the body of the first slot extends between the side portions of the periphery. Still yet, the first arm and the second arm extend between the body and one of the upper portion and the lower portion of the periphery. A dielectric is positioned in the first slot for providing continuous insulation between the first portion, the second portion, the third portion, and the fourth portion.

Abstract: Aromatic farnesyl compound and application of a pharmaceutical salt thereof as an inhibitor of ?-glucosidase, dipeptidyl peptidase-4, aldose reductase, protein tyrosine phosphatase-1B or HMG-CoA reductase, or use thereof in preparing medicine and functional healthcare products having a liver protective function and/or for treating and/or preventing type II diabetes, diabetic retinopathy, diabetic foot disease, and hyperlipidemia.