Abstract: A perforating tool including a body, a first lid and a second lid, the first lid attachable to one end of the body and the second lid attachable to an opposite end of the body, to define an interior cavity of the body. The interior cavity has an air-tight seal with an exterior environment surrounding the body. In some aspects, one or more plates disposable within the interior cavity such that the one or more plates are situated apart from an explosive charge when the explosive charge is disposed in the interior cavity, the one or more plates occupying part of a total interior volume of the interior cavity and thereby reducing a free interior volume inside the body.

Abstract: An electromagnetic (EM) pose tracking system includes a computer input device having a pen or stylus form factor. In some embodiments, a base station device includes one of the transmitter (Tx) or receiver (Rx) module for the EM pose tracking system while the computer input device includes the other of the TX and receiver modules. The EM pose tracking system employs the Tx and Rx modules to collect EM pose data indicating a relative pose between the Tx and Rx modules. Based on the EM pose data, the EM pose tracking system (or a computer device working with the EM pose tracking system) identifies a pose (position, orientation, or both position and orientation) of the computer input device.

Abstract: A clasp includes a base member with a first magnetic element and a detachable member with a second magnetic element. The first magnetic element is positioned within a lateral groove in the base member and the second magnetic element is position on a tongue of the detachable member. A first cleat in the base member engages second cleat on the tongue when the tongue is secured in a seated position within the lateral groove. The magnetic elements bias the tongue into the seated position within the lateral groove in response to positioning the second cleat over the first cleat and then moving the second magnetic element into proximity with the first magnetic element. The detachable member may be detached from the base member by applying a lateral force that overcomes friction between the members and magnetic forces between the magnetic elements to slide the tongue laterally through the lateral groove.

Abstract: Provided herein are embodiments of a method and apparatus for measuring permeability of a rock core sample in the direction of pressure gradient. In one embodiment, a method includes providing a rock core sample having an inlet primary face, an outlet primary face and one or more sidewalls having a thickness (T) adjoining the inlet and outlet primary face, wherein the inlet primary face has a surface area (SAIF) and the one or more sidewalls have a surface area (SASW), and further wherein a ratio of the inlet primary face surface area (SAIF) to sidewall surface area (SASW) is at least 0.4; placing the rock core sample, unbounded, between an inlet flow plate and an outlet flow plate; directing a fluid through from the inlet flow plate into the rock core sample; and measuring a flow rate of the fluid exiting the outlet flow plate.

Abstract: A bio-reactive container and filter assembly to improve flow rates and mass transfer without increased pressure. An inlet filter membrane secured to the container defines a container chamber in combination with the container. An inlet filter membrane element may also be secured to the container to provide structural support to the membrane. An outlet membrane secured to the container defines a container chamber in combination with the container. An outlet filter membrane element may also be secured to the container to provide structural support to the outlet membrane. Inlet and/or outlet filters and/or filter elements are constructed to significantly increase surface area available for fluid and/or gas ingress and/or egress. Single and double layer membranes with mixtures of hydrophobic and hydrophilic characteristics are used to maximize perfusion and gasification/degasification of bio-reactive containers.

Abstract: Disclosed herein are aspects of a method, 3D modeling apparatus, and a computer program product for determining parameters of a perforated core sample. In one embodiment, a method for determining parameters of a perforated core sample comprises providing a 3D mapping of a crush zone of a perforated core sample; and determining a permeability value for the crush zone of the perforated core sample based on a permeability of a representative unperforated core sample and the 3D mapping of the crush zone of the perforated core sample.

Abstract: Systems and methods may increase facial recognition throughput by reducing search data as a person traverses through a theme park. Systems and methods include storing facial identification data in a theme park database as guests enter a theme park and removing facial identification data in the theme park database as guests exit the theme park. In this manner, the theme park database includes facial identification data of guests inside the theme park, and not of guests who have left the theme park, thereby reducing the size of the theme park database as guests exit the theme park. Similarly, this approach may be implemented within each of the various areas of the theme park, such that the size of databases associated with each area of the park only includes entries corresponding to guests in the particular park area.

Abstract: A conversation correlation system is configured to associate social signals with conversations and group the conversations into topic clusters. The topic clusters for different days are linked together to form conversation streams. The conversation streams may identify conversation topics within ecosystems and identify changes in conversation topics over time. Topic labels may be generated for the topic clusters that better describe conversation topics. In one example, the topic labels may be generated using a mutual information topic distribution model.

Abstract: Exemplary semiconductor processing chambers may include a chamber body defining a substrate processing region. The chambers may include a substrate support positioned within the substrate processing region. The substrate support may include a ceramic or polymeric insulator plate positioned between a cathode assembly and an electrostatic chuck assembly. The chambers may include an acoustic emission probe in contact with the insulator plate of the substrate support.

Abstract: Techniques are disclosed relating to a computer system accessing a client credential set to authenticate with a destination computer system. A computer system may, subsequent to receiving an indication to make available an application for a particular user, retrieve configuration data specifying a reference to a key value. The computer system may maintain a data object that includes a client credential set for the particular user. In response to an occurrence of an event associated with the application, the computer system may access the client credential set of the particular user from the data object using the key value and an indication of the particular user. The computer system may then send a request including the client credential set to a destination computer system for authentication with the destination computer system and receive a response indicating whether the computer system has been authenticated.

Abstract: Wellbore pressure surge simulation systems, methods to perform pressure surge simulations, and methods to configure pressure surge simulation systems are disclosed. A wellbore pressure surge simulation system includes a core chamber configured to store a core sample of a downhole formation inside the core chamber. The wellbore pressure surge simulation system also includes a fluid chamber that is fluidly connected to the core chamber and having a first compartment that is configured to store a first fluid and a second compartment that is configured to store a second fluid. The wellbore pressure surge simulation system further includes a wellbore chamber positioned adjacent to the core chamber and configured to store the first fluid. The wellbore pressure surge simulation system further includes a flow restrictor configured to restrict fluid flow from the wellbore chamber.

Abstract: Provided herein are embodiments of a method and apparatus for measuring permeability of a rock core sample in the direction of pressure gradient. In one embodiment, a method includes providing a rock core sample having an inlet primary face, an outlet primary face and one or more sidewalls having a thickness (T) adjoining the inlet and outlet primary face, wherein the inlet primary face has a surface area (SAIF) and the one or more sidewalls have a surface area (SAsw), and further wherein a ratio of the inlet primary face surface area (SAIF) to sidewall surface area (SAsw) is at least 0.4; placing the rock core sample, unbounded, between an inlet flow plate and an outlet flow plate; directing a fluid through from the inlet flow plate into the rock core sample; and measuring a flow rate of the fluid exiting the outlet flow plate.

Abstract: Aspects of a method for mapping a perforation tunnel and crush zone of a perforated core sample. The method may include scanning a perforated core sample having a perforation tunnel containing a permeability-impairing material with a first computerized tomography (CT) scanning apparatus to produce a first 3D model of the perforation tunnel. The method may further include forming a cleared perforation tunnel by removing at least a portion of the permeability-impairing material from within the perforation tunnel without splitting the core sample at the perforation tunnel, and scanning the perforated core sample having the cleared perforation tunnel with a second computerized tomography (CT) scanning apparatus to produce a second 3D model of the cleared perforation tunnel. The method may compare the first 3D model and the second 3D model to obtain a 3D mapping of the perforation tunnel or a crush zone.

Abstract: Techniques are disclosed relating to a computer system accessing a client credential set to authenticate with a destination computer system. A computer system may, subsequent to receiving an indication to make available an application for a particular user, retrieve configuration data specifying a reference to a key value. The computer system may maintain a data object that includes a client credential set for the particular user. In response to an occurrence of an event associated with the application, the computer system may access the client credential set of the particular user from the data object using the key value and an indication of the particular user. The computer system may then send a request including the client credential set to a destination computer system for authentication with the destination computer system and receive a response indicating whether the computer system has been authenticated.

Abstract: The disclosure relates generally to a cell culture apparatus and a cell culture method. One aspect of the disclosure provides a perfusion cell culture bag comprising one or more polymer films, having edges bonded together to form edges around an undivided interior compartment of the bag; first and second ports each formed in an exterior surface of the bag; first and second liquid-permeable tubes each extending into and in fluid communication with the interior compartment of the bag and operatively coupled to a respective port; and a third port formed in an exterior surface of the bag, the third port being in fluid communication with the interior compartment of the bag; wherein the first tube comprises a first inner support structure defining a central lumen of the tube and a first outer filter layer surrounding the first inner support structure.

Abstract: A conversation correlation system is configured to associate social signals with conversations and group the conversations into topic clusters. The topic clusters for different days are linked together to form conversation streams. The conversation streams may identify conversation topics within ecosystems and identify changes in conversation topics over time. Topic labels may be generated for the topic clusters that better describe conversation topics. In one example, the topic labels may be generated using a mutual information topic distribution model.

Abstract: A tank cleaning system for cleaning a space. The tank cleaning system can include a trailer having a support base transportable by a vehicle, and an arm movably mounted to the support base for movement relative to the support base. The arm can be operable to extend into the space to perform a cleaning operation inside the space.

Abstract: A liquid recovery filter assembly for recovering filtered liquid trapped within a core or downstream side of a filter element. Multiple embodiments each include a recovery port and a recovery filter in fluid communication with the core or downstream side of the filter element. The recovery port is opened following filtration operations to permit and to facilitate filtered liquid to flow from a downstream or outlet port, thus allowing recovery of liquid remaining in the filter core or downstream side following filtering operations. The recovery filter permits the introduction of pressurized gas to force the filtered liquids from the filter assembly without compromising the sterility and/or non-contaminant condition of the liquid.

Abstract: Systems and methods are provided for an exhaust gas recirculation (EGR) system in a vehicle. In one example, a system may include a cylinder head including an integrated exhaust manifold (IEM), an EGR cartridge including an EGR valve positioned in the cylinder head at a central collector region of the IEM, and a water jacket formed within the cylinder head, the water jacket including at least one cooling passage that extends around a circumference of the EGR cartridge. In this way, an EGR system is provided that has a reduced volume between an exhaust valve of a cylinder to the EGR valve, reducing packaging space and complexity of the EGR system while increasing engine performance.

Abstract: Advertisement content presented to a user of an online system is presented along with an option allowing the user to view one or more reasons for presentation of the advertisement content to the user. If the user selects the option, based on targeting criteria associated with the advertisement content and characteristics associated with the user, the online system selects one or more characteristics of the user satisfying the targeting criteria and presents a description to the user identifying the selected one or more characteristics satisfying the targeting criteria. The online system may apply one or more rules based on user perception of characteristics when selecting the one or more characteristics included in the description. An option for the user to prevent use of the selected one or more characteristics when the online system subsequently selects advertisement content for the user is also presented with the description.