Abstract: An aerosol-generating system includes an electric heater and a pair of first contacts for delivering electrical power to the electric heater. The system further includes a pair of second contacts independently contacting the electric heater for measuring the voltage between the second contacts.

Abstract: An Electrochemical Nitrogen Generator System and Method. The system and method provide the ability to create a nitrogen-rich environment in containers of a variety of sizes. The system and method are able to extract the oxygen from the air within the container without reducing the internal pressure substantially below atmospheric. A version of the method is provided to reduce the oxygen content and replace it with nitrogen through a series of sequential fractional steps. In another form, the system and method will provide a “streaming” approach of bleeding off oxygen-containing contents of the container, while continuously replacing it with air until such time as the percentage of oxygen within the container is below the desired level.

Abstract: The density of slurries produced by mobile blender for injection into oil and gas wells is controlled using a microwave flow meter. Liquid having a known density is provided to the blender. The liquid is flowed through a conduit and discharged into a blending tub on the mobile blender. The amount of liquid introduced into the tub is measured with a liquid flow meter. Solid particulates having a known density are provided to the blender. The particulates are discharged into the tub by allowing them to fall into the tub from a conveyor on the mobile blender. The amount of the particulates falling into the tub are measured with a microwave flow meter. The flow of the liquid and the particulates are controlled in response to the measurements to blend a slurry having a predetermined density. The slurry is provided for injection into the well.

Abstract: Frac pumps have valve seats and bodies. The valve seats comprise a cylindrical body and an annular seat surface. The body has an axial passage and external threads adapted to engage internal threads in a fluid end block of the frac pump. The annular seat surface is at an end of the body and is adapted to engage a valve body. The valve bodies comprise a head and a compressible seal. The head provides a valve surface adapted to engage the valve seat. The compressible seal is carried on the head radially inward of the valve surface and is adapted to engage the valve seat.

Abstract: To optimize the efficiency of a perforating tool system, downhole conditions may be simulated to determine the optimal configuration for the perforating tool system. A simulated wellbore is disposed in a pressure vessel and coupled to a target composite core assembly. A perforating tool system is disposed in the simulated wellbore above the target composite core assembly. The target composite core assembly includes an outer shell. The outer shell comprises a material that supports a rubber bladder or flexible jacket that is disposed about the outer shell. The outer shell isolates the overburden fluid and pressure from the inner core during a radial flow test to more accurately simulate conditions downhole. A parameter of a perforating tool system may be altered based, at least in part, on a result from the radial flow test.

Abstract: Systems, devices, and methods may control total particulate matter (TPM) production based on air flow rate and TPM density. TPM density is a TPM production rate per flow rate of gas through an aerosol-generating device. The systems, devices, and methods may measure, or sample, air flow during a puff or draw on an aerosol-generating device. The aerosol-generating device may, in turn, adjust the production of the TPM based on the measured air flow rate and a selected, or desired, TPM density, which may be pre-set in the device and/or subsequently set as desired.

Abstract: Systems, methods, and computer-readable media are provided for enabling mobile device-based item acquisition and tracking. One exemplary method performed on a mobile device comprises entering a wireless scan mode, detecting a signal from a tag associated with an item in a first area and in proximity to the tag, presenting information associated with the tag, and adding the information to a list. The method further comprises detecting a second tag in a second area, and sending the list to a second device. A second exemplary method performed by a processing terminal comprises receiving the list from a mobile device, entering a wireless scan mode, detecting a signal from a tag associated with an item in proximity to the tag, determining whether the item associated with the detected tag is present on the received list, and enabling the mobile device to complete a transaction to purchase the item.

Abstract: This disclosure concerns the discovery of the use of fenoterol and (R,R)- and (R,S)-fenoterol analogues for the treatment of a tumor expressing a ?2-adrenergic receptor, such as a primary brain tumor, including a glioblastoma or astrocytoma expressing a ?2-adrenergic receptor. In one example, the method includes administering to a subject a therapeutically effective amount of fenoterol, a specific fenoterol analogue or a combination thereof to reduce one or more symptoms associated with the tumor, thereby treating the tumor in the subject.

Abstract: A method of cementing a subterranean formation includes forming a cement composition comprising cementitious material, an aqueous base fluid, a nano-reinforcement particle suspension comprising a surfactant; and pozzolanic material; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation. A method of making a cement composition includes combining cementitious material, an aqueous base fluid, a nano-reinforcement particle suspension comprising a surfactant, and a pozzolanic material, where the rate of hydration of the surfaces of the cementitious material is less retarded by the surfactant than an equivalent cement composition without pozzolanic material.

Abstract: The finding that human immunodeficiency virus (HIV) envelope glycans bind CD62L (L-selectin) on central memory T cells is described. HIV infection is also shown to induce shedding of CD62L and this shedding is required for efficient release of HIV from infected cells. Methods of inhibiting HIV release from infected cells using inhibitors of CD62L sheddase are described. Methods of treating HIV infection with a CD62L sheddase, such as in combination with antiretroviral therapy, is also described.

Abstract: Computer-implemented methods and systems are provided for generating a distributed representation of electronic transaction data. Consistent with disclosed embodiments, generation may include receiving electronic transaction data including first and second entity identifiers. Generation may also include generating an output distributed representation by iteratively updating a distributed representation using the electronic transaction data. The distributed representation may include rows corresponding to first entity identifiers and rows corresponding to second entity identifiers. An iterative update may include generating a training sample and an embedding vector using the components and the distributed representation; determining, by a neural network, a predicted category from the embedding vector, and updating the distributed representation using the predicted category and the training sample.

Abstract: The present disclosure is directed to a hydraulic fracturing system for fracturing a subterranean formation. In an embodiment, the system can include an electric pump fluidly connected to a well associated with the formation, and configured to pump fluid into a wellbore associated with the well at a high pressure so that the fluid passes from the wellbore into the formation and fractures the formation. The system can further include one or more ancillary units associated with the fluid pumped into the wellbore. The system can further include a first motor electrically coupled to the electric pump to operate the electric pump, and one or more second motors, each of the second motors electrically coupled to each of the ancillary units to operate the one or more ancillary units.

Abstract: Identification of pulmonary diseases involves accurate auscultation as well as elaborate and expensive pulmonary function tests. Also, there is a dependency on a reference signal from a flowmeter or need for labelled respiratory phases. The present disclosure provides extraction of frequency and time-frequency domain lung sound features such as spectral and spectrogram features respectively that enable classification of healthy and abnormal lung sounds without the dependencies of prior art. Furthermore extraction of wavelet and cepstral features improves accuracy of classification. The lung sound signals are pre-processed prior to feature extraction to eliminate heart sounds and reduce computational requirements while ensuring that information providing adequate discrimination between healthy and abnormal lung sounds is not lost.

Abstract: An acoustic receiver and method for acoustic logging. The acoustic receiver comprises a housing and a sensor subassembly, which is located within the housing. The sensor subassembly comprises a mount and a cylindrical piezoelectric crystal coupled to the mount. The sensor subassembly also comprises an isolation ring positioned between one of the ends of the cylindrical piezoelectric crystal and the mount. The isolation ring directly engages the crystal and the mount. The method of acoustic logging comprises receiving an acoustic signal using an acoustic receiver, which comprises a cylindrical piezoelectric crystal coupled to a mount without an adhesive material. The method also comprises converting the acoustic signal into an electrical signal by the cylindrical piezoelectric crystal and transmitting the electrical signal to a processor via a conductor coupled to the cylindrical piezoelectric crystal.

Abstract: An example fluid management system for generating a fluid for a treatment operation may include a mixer and a first portable container disposed proximate to and elevated above the mixer. The first portable container may hold dry chemical additives. A feeder may be positioned below the first portable container to direct dry chemical additives from the first portable container to the mixer. The system may also include a first pump to provide fluid to the mixer from a fluid source.

Abstract: An assembly for installation into a wellbore that includes a main wellbore and a lateral wellbore branching off the main wellbore is described. The assembly includes a tubular positionable in the main wellbore, where the tubular includes a profile. The assembly further includes an isolation device securably landable in and sealable against the profile device to isolate a region of the main wellbore from a region of the lateral wellbore.

Abstract: Provided herein a vacuum cleaner capable of effectively escaping from a situation where driving wheels are in an idling state. The vacuum cleaner includes a main casing, driving wheels, a control unit and an idling detection part. The driving wheels enable the main casing to travel. The control unit controls the driving of the driving wheels to make the main casing autonomously travel. The idling detection part detects that the driving wheels are in an idling state. In the case where the idling detection part detects that the driving wheels are in an idling state, the control unit controls the operation of the driving wheels so as to, after the operation to make the main casing retreat by a certain distance, repeat consecutively for a plurality of times the operation to make the main casing turn in a specified one direction and advance by a specified distance.

Abstract: An elliptical reel is provided. The elliptical reel can include one or more longitudinal support members about a longitudinal axis of the reel and on which hose can be wound for transport. A cross section of the longitudinal support members that is perpendicular to the longitudinal axis defines an outline that has an elliptical shape.

Abstract: A method of connecting to an existing wellbore downhole can include installing a swellable material into the existing wellbore from a connecting wellbore drilled into the existing wellbore. A well system can include a relief wellbore drilled proximate an existing wellbore, a connecting wellbore drilled from the relief wellbore to the existing wellbore, a tubular string extending from the relief wellbore through the connecting wellbore and into the existing wellbore, and a swellable material which swells in an annulus formed between the tubular string and at least one of the relief wellbore, the connecting wellbore and the existing wellbore. Another method of connecting to an existing wellbore downhole can include drilling a relief wellbore proximate the existing wellbore, then drilling a connecting wellbore from the relief wellbore to the existing wellbore, and then installing a swellable material into the existing wellbore from the connecting wellbore.

Abstract: A method and system for using individualized customer models when operating a retail establishment is provided. The individualized customer models may be generated using statistical analysis of transaction data for the customer, thereby generating sub-models and attributes tailored to customer. The individualized customer models may be used in any aspect of a retail establishment's operations, ranging from supply chain management issues, inventory control, promotion planning (such as selecting parameters for a promotion or simulating results of a promotion), to customer interaction (such as providing a shopping list or providing individualized promotions).