Abstract: A polymer masonry unit (PMU) and methods and systems for forming PMUs are presented. In embodiments, a PMU may be made from a PMU mixture of a polymer, a quarry byproduct, such as a limestone aggregate, and water. The PMU may be ambient-dried to become a brick unit. The proportions of the PMU mixture may include 1-10% polymer, 80-90% quarry byproduct, and 1-10% water. The process for making a brick using the PMU of embodiments may avoid a kiln-firing process, which is costly, creates waste, and consumes significant energy. Furthermore, the PMU mixture may be formulated to enable the PMU mixture to be extruded from an extruder, enabling a system for making bricks to take advantage of the extrusion method, which can be very efficient and cost-effective for making bricks, and which is currently not possible with existing techniques and systems.

Abstract: A patient interface for delivering breathable gas to a patient includes a sealing portion including a nose tip engagement portion adapted to form a seal with the patient's nose tip, an upper lip engagement portion adapted to form a seal with the patient's upper lip and/or base of the patient's nares, and nostril engagement flaps adapted to form a seal with the patient's nares. The nose tip engagement portion, the upper lip engagement portion, and the nostril engagement flaps are all structured to extend or curve outwardly from a supporting wall defining an air path.

Abstract: A method is described for seismic imaging that will produce a seismic image with correctly focused and positioned reflectors. This is accomplished by adding physical geological information to a beam tomography process to generate an updated earth model for the seismic imaging. The method may be executed by a computer system.

Abstract: A method is described for seismic imaging that will produce a seismic image with correctly focused and positioned reflectors. This is accomplished by adding physical geological information to a beam tomography process to generate an updated earth model for the seismic imaging. The method may be executed by a computer system.

Abstract: A wound dressing includes a superabsorbent layer, a backing layer, and a charcoal layer. The superabsorbent layer is configured to absorb wound fluid and has a first side and a second, wound-facing side. The backing layer also has a first side and a second, wound-facing side. The backing layer is substantially impermeable to liquid and substantially permeable to vapor. The charcoal layer is positioned between the first side of the superabsorbent layer and the second, wound-facing side of the backing layer. The charcoal layer is configured to increase a moisture vapor transmission rate of the wound dressing.

Abstract: The present invention is directed to a method and system for minimizing artifacts in a seismic image of a subsurface region of interest, wherein the image is determined a data beam set derived from recorded seismic data and a modeled beam set derived at least in part from a velocity model related to a subsurface region. The artifacts, which may result from cycle skipping and coherent noise, result in misalignment of the modeled and data beam sets. The present invention utilizes a Monte Carlo inversion technique to update the velocity model and thus minimize the artifact in the seismic image.

Abstract: A method of attenuating interbed multiples in multiply-reflected seismic waves is performed at a computer system, the method including: providing multiple beams of seismic data and an earth model related to a geological volume; selecting one of the beams as an input beam associated with a pair of source and detector located near a top surface of the geological volume; determining at least one of (i) a source-side stationary pegleg arrival and a corresponding detector-side primary beam and (ii) a detector-side stationary pegleg arrival and a corresponding source-side primary beam; predicting an interbed multiples beam using at least one of (i) the detector-side primary beam delayed by the source-side stationary pegleg arrival and (ii) the source-side primary beam delayed by the detector-side stationary pegleg arrival; and deconvolving the predicted interbed multiples beam with the input beam to remove at least a portion of interbed multiples present in the input beam.

Abstract: A method of modifying a seismic image of a subsurface region includes identifying a location within the seismic image that includes a distortion, indicating a structural change associated with the distortion, that is selected to at least partially correct for the distortion, identifying a region causing the distortion in which corrections to a velocity model corresponding to the seismic image are to be applied, performing an inversion for the region in accordance with the indicated structural change, updating the velocity model on the basis of the inversion, and producing a modified seismic image on the basis of the updated velocity model.

Abstract: A beam tomography computer implemented method and system for generating improved seismic images and earth models without dependence on reflector structure is disclosed. Recorded seismic data is transformed into data beams which are compared to forward modeled beams using an earth model having a velocity model to compute raypaths and a seismic image to specify the reflectors. The tomographic updates to the earth model and velocity model are based on misalignments between the data beams and the same beams forward modeled from the velocity model and the seismic image. The updated earth model and seismic image better describe the true propagation of the beams through the earth.

Abstract: A method of attenuating interbed multiples in multiply-reflected seismic waves is performed at a computer system, the method comprising: providing multiple beams of seismic data and an earth model related to a geological volume; selecting one of the beams as an input beam associated with a pair of source and detector located near a top surface of the geological volume; determining at least one of (i) a source-side stationary pegleg arrival and a corresponding detector-side primary beam and (ii) a detector-side stationary pegleg arrival and a corresponding source-side primary beam; predicting an interbed multiples beam using at least one of (i) the detector-side primary beam delayed by the source-side stationary pegleg arrival and (ii) the source-side primary beam delayed by the detector-side stationary pegleg arrival; and deconvolving the predicted interbed multiples beam with the input beam to remove at least a portion of interbed multiples present in the input beam.

Abstract: Seismic data representing the propagation of seismic energy through a geologic volume of interest is processed. The seismic energy propagates through the geologic volume of interest from one or more source locations at or near the geologic volume of interest to one or more detector locations at or near the geologic volume of interest. In processing the seismic data, the seismic energy is modeled as beams (e.g., Gaussian beams). The processing performed (i) corrects for misalignment of the one or more source locations and/or the one or more detector locations with a regular, predetermined mesh, and (ii) steers the seismic data based on the modeled beams.

Abstract: The present invention is directed to a method and system for minimizing artifacts in a seismic image of a subsurface region of interest, wherein the image is determined a data beam set derived from recorded seismic data and a modeled beam set derived at least in part from a velocity model related to a subsurface region. The artifacts, which may result from cycle skipping and coherent noise, result in misalignment of the modeled and data beam sets. The present invention utilizes a Monte Carlo inversion technique to update the velocity model and thus minimize the artifact in the seismic image.

Abstract: A method of modifying a seismic image of a subsurface region includes identifying a location within the seismic image that includes a distortion, indicating a structural change associated with the distortion, that is selected to at least partially correct for the distortion, identifying a region causing the distortion in which corrections to a velocity model corresponding to the seismic image are to be applied, performing an inversion for the region in accordance with the indicated structural change, updating the velocity model on the basis of the inversion, and producing a modified seismic image on the basis of the updated velocity model.

Abstract: The present invention incorporates the use of model-driven and data-driven methodologies to attenuate multiples in seismic data utilizing a prediction model which includes multiply-reflected, surface-related seismic waves. The present invention includes beam techniques that account for beam azimuth, and convolving a predicted multiples beam with a segment of a modeled pegleg beam to obtain a convolved multiples beam. The convolved multiples beam can then be deconvolved to attenuate the multiples that are present in the original input beam.

Abstract: A light for a life vest comprises a resilient pole, a light source disposed at a first end of the resilient pole and a mount supporting a second end of the resilient pole, the mount configured for securing the light to an inflatable bladder of a life vest such that inflation of the bladder causes the pole to extends outwardly with respect to the surface of the bladder. A test circuit for testing the power level of a battery that powers the light source may also be included.

Abstract: A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.

Abstract: A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.

Abstract: A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.

Abstract: A system and method approximate a set of wave equations describing the propagation of seismic waves of one or more frequencies through a seismic volume of interest. In one embodiment, a ray-based initial beam solution is determined that describes the propagation of seismic waves at a first frequency through the seismic volume of interest as a set of one or more beams. Based on the ray-based initial beam solution, a refined finite-element beam solution is determined that describes the propagation of the seismic waves at the first frequency through the seismic volume of interest by approximating the two-way wave equation with a one-way wave equation.

Abstract: The present invention incorporates the use of model-driven and data-driven methodologies to attenuate multiples in seismic data utilizing a prediction model which includes multiply-reflected, surface-related seismic waves. The present invention includes beam techniques that account for beam azimuth, and convolving a predicted multiples beam with a segment of a modeled pegleg beam to obtain a convolved multiples beam. The convolved multiples beam can then be deconvolved to attenuate the multiples that are present in the original input beam.