Abstract: A microphone mounted shield device for concealing a user's mouth when the user is wearing a headset includes a shield which is mountable to a microphone arm of a headset. The shield is positioned in front of a user's mouth when the user is wearing the headset. The shield is comprised of an opaque material to inhibit light from passing through the shield thereby inhibiting an observer from being capable of perceiving the user's mouth when the user is speaking into a microphone which is mounted to the microphone arm for enhancing privacy with respect to the words the user is speaking. A strap is removably mountable to the shield thereby enabling the strap to be extended around the microphone arm of the headset for securing the shield to the microphone arm.

Abstract: A toilet seat covering device for reducing viral transmission includes a sheet, which is shaped substantially complementarily to an upper face of a toilet seat. The sheet comprises resiliently flexible, substantially inelastic, elastomer. The sheet is positionable on the upper face of the toilet seat so the sheet to substantially covers the upper face. The sheet prevents direct contact of the upper face of the toilet seat with a user who is seated upon the toilet seat. The sheet may be one of a plurality of sheets, the sheets of which are sequentially extractable for use, after which they can be disposed of.

Abstract: In some examples, an apparatus can include a plunder comprising a cavity, a bezel comprising an aperture having a particular shape, a magnet located in the cavity of the plunger, and a magnetically actuated valve connected to the bezel, where in response to the plunger being moved by a key having a shape corresponding to the particular shape of the aperture of the bezel, the magnet is to cause the magnetically actuated valve to actuate.

Abstract: A method of recirculating printing fluid that includes with a first pump upstream of an internal reservoir, pumping printing fluid into the reservoir and with a second pump downstream of the internal reservoir and upstream of a pen assembly, pumping printing fluid from the reservoir.

Abstract: Various embodiments are described herein for creating a 3D human heart model for modelling arrythmias, wherein the method comprises seeding a structure with a mixture of human cardiomyocytes, cardiac fibroblasts and a fibrin mixture to form cardiac tissue; applying a plating media for settlement and compaction of the cardiac tissue; and adding an arrhythmogenic media to the cardiac tissue, where the arrhythmogenic media comprises methyl-beta cyclodextrin for disrupting calcium signaling.

Abstract: In some examples, preheat three-dimensional (3D) printer build material can include a heating plate of a 3D printer to preheat build material from below the build material, where the heating plate is located adjacent to a build platform of the 3D printer, and a heater-spreader carriage of the 3D printer to preheat the build material from above the build material and spread the preheated build material from the heating plate to the build platform.

Abstract: In some examples, an apparatus can include a supply reservoir including print substance, and a rotary valve having a central rotary axis, where the central rotary axis is perpendicular to a height of the supply reservoir, where the rotary valve is in a closed position such that the print substance is unable to be supplied from the supply reservoir.

Abstract: In some examples, a controller may include a processing resource and a memory resource storing non-transitory machine-readable instructions that are executed to cause the processing resource to direct a clock signal of an imaging device to a fill port via a detection circuit of the imaging device, determine based on a state of a switch included in the detection circuit whether the fill port is open or closed, determine based on the state of the switch indicating the fill port is closed a status of the fill port, and in response to the status of the fill port being closed, determine based on a voltage of the clock signal whether the fill port is connected to a colorant container.

Abstract: An example printing device may comprise an indicator to convey information to a user, a print substance reservoir to house a print substance, where the print substance reservoir is communicatively coupled to a fill port, a sensor to determine when a refill container is connected to the fill port, a processing resource, and a non-transitory machine-readable medium storing instructions executable by the processing resource to transmit signals to the indicator responsive to an indication that the sensor has detected the refill container connected to the fill port, where the signals correspond to the information to be conveyed by the indicator, and authenticate the refill container.

Abstract: A print substance container includes a print substance reservoir, a flange, and sensor system. The print substance reservoir includes a set of walls including an upstanding wall and a base. The set of walls enclose an interior of the print substance reservoir. The flange is remote from the interior of the print substance reservoir. The sensor system includes a level sensor, a reference full sensor, and a reference empty sensor. The level sensor is attached to the upstanding wall opposite the interior of the print substance reservoir. The reference full sensor is attached to the base opposite the interior of the print substance reservoir. The reference empty sensor is attached to the flange.

Abstract: An extraction pump of a printing device fluidically connected to a reservoir of the printing device is set to a specified rotational velocity. A pulse-width modulation (PWM) value of the extraction pump correspondingly increases until the extraction pump rotates at the specified rotational velocity. While the power of the extraction pump is monitored, a power of a supply pump of the printing device fluidically connected between the extraction pump and the reservoir is continually increased; the power of the extraction pump correspondingly decreases to maintain rotation of the extraction pump at the specified rotational velocity. Responsive to the power of the extraction pump decreasing to a characterized value for the specified rotational velocity, the power of the supply pump ceases being increased.

Abstract: A method of recirculating printing fluid that includes with a first pump upstream of an internal reservoir, pumping printing fluid into the reservoir and with a second pump downstream of the internal reservoir and upstream of a pen assembly, pumping printing fluid from the reservoir.

Abstract: In some examples, an apparatus can include a valve body including a valve body print substance channel and a valve body air channel, a valve socket shaped to receive the valve body, where the valve socket includes a valve socket print substance channel and a valve socket air channel, where the valve body is in a closed position such that the valve body print substance channel and the valve socket print substance channel are misaligned, and the valve body air channel and the valve socket air channel are misaligned.

Abstract: Concepts and technologies are disclosed herein for extracting and redacting sensitive information from audio. A call having audio and being associated with a customer can be received at a computing device, and the call can be routed to an agent device. During the call, the computing device can detect an impending disclosure of sensitive personal information of the customer. The computing device can generate, during the call, sensitive data that can correspond to the sensitive personal information. The sensitive data can be generated based on sensitive audio of the call. The computing device can provide modified audio to the agent device in real-time or non-real-time. The modified audio can include nonsensitive audio of the call and can omit the sensitive audio. The sensitive data can be provided to a call handling application that is in communication with the computing device and with the agent device.

Abstract: An example of apparatus including an attachment assembly to mate a liquid supply with a reservoir is provided. The apparatus includes an outlet port disposed on the attachment assembly, wherein the outlet port is to dispense liquid from the liquid supply to a receiving port of the reservoir. The apparatus includes a main vent port disposed on the attachment assembly, wherein the main vent port is to receive air from the reservoir as the liquid enters the reservoir. The apparatus includes a plug disposed on the attachment assembly, wherein the plug is to seal a secondary vent when the attachment assembly is mated with the reservoir, and wherein the plug is to break a seal with the secondary vent prior to detachment of the attachment assembly to recover the liquid from the attachment assembly.

Abstract: In some examples, an apparatus can include a pawl including an anti-rotation surface and a spring, and a valve housing including a wedge, where the spring biases the pawl to a first position in response to the valve housing being at a closed position such that the wedge of the valve housing contacts the anti-rotation surface of the pawl to prevent rotation of the valve housing at the first position of the pawl.

Abstract: An extraction pump of a printing device fluidically connected to a reservoir of the printing device is set to a specified rotational velocity. A pulse-width modulation (PWM) value of the extraction pump correspondingly increases until the extraction pump rotates at the specified rotational velocity. While the power of the extraction pump is monitored, a power of a supply pump of the printing device fluidically connected between the extraction pump and the reservoir is continually increased; the power of the extraction pump correspondingly decreases to maintain rotation of the extraction pump at the specified rotational velocity. Responsive to the power of the extraction pump decreasing to a characterized value for the specified rotational velocity, the power of the supply pump ceases being increased.

Abstract: Methods of determining a level of a print substance in a print substance reservoir are disclosed. A reference capacitance of a reference sensor is measured. The reference capacitance is representative of one of a full print substance reservoir and an empty print substance reservoir. A level capacitance of a level sensor is measured. A correlation between the reference sensor and the level sensor is applied to the measured reference capacitance to determine an adjusted reference capacitance. A fill level ratio is determined based on the measured level capacitance and the adjusted reference capacitance.

Abstract: An explosive detonating system comprises connectable components to connect/disconnect a pathway that ignites an explosion. A firing actuator activates primers (percussion caps). An adapter connects the firing actuator to shock tube and channels the ignition force into the shock tube. A cap box houses blasting caps coupled to the end of the shock tube. A priming well is coupled to the cap box/blasting caps and the detonating cord. When the firing actuator is initiated, the percussion caps ignite, sending an explosive wave into the adapter, which channels the wave into the shock tube and ignites the shock tube. The explosive wave travels through the shock tube and activates the blasting caps, which activate the detonating cord in the priming well. The explosive is placed in a location to provide a desired explosive effect. For example, the system may be employed as a system to breach structures or other applications.