Herein is reported a feed mixing device for adding feed solutions with a non-physiologically pH value to a cell cultivation vessel comprising a chamber for mixing the feed solutions prior to their addition to the cell cultivation vessel as well as its use. With the feed mixing device as reported herein feed components can be provided in solution at a pH value at which they have good solubility and/or good stability whereby the pH value can be clearly different from the pH value of the cultivation medium, i.e. different from the physiological pH value. This allows performing the cultivation with more flexibility compared to a cultivation in which the pH value of the feed solution is limited to a small range around the pH value of the cultivation.

A system and method for customizing the solution used in the sunless spray tanning process are provided. In at least one form, the solution is volumetrically mixed at the point of use, allowing for greater customization and a more consistent tanning result. Providing improved customization at the point of use is accomplished, in at least one form, by using a two-part tanning solution: one part being a high concentration DHA solution and another part being an activator solution. The two parts are mixed with one another at the point of use based on user preferences at the time of the tanning session to provide a specific final DHA concentration for a customized tanning result.

A method for adjusting a blend composition includes: receiving target blend composition data associated with a target blend composition having a target blend property; controlling blend component flow streams to cause blend components to be added to a blend tank to form a blend composition; determining a property of the blend composition; comparing the property of the blend composition with the target blend property; generating control flow instructions based on the property of the blend composition and a machine learning analysis of historical blend data; and adjusting a blend component flow stream of the blend component flow streams to form a modified blend composition in the blend tank.

An aspect ratio flow metering device may comprise a concentrate inlet portion, one or more restricted flow portions of tubing fluidly connected to the concentrate inlet portion, and a metered concentrate outlet portion fluidly connected to the one or more restricted flow portion of tubing. The narrowest part of the one or more restricted flow portions of tubing may each have a length (R.sub.L): inner diameter (R.sub.ID) ratio of at least 10:1. The metered concentrate outlet portion may have an inner diameter (O.sub.ID) greater than R.sub.ID. The concentrate inlet portion may have an inner diameter (I.sub.ID) greater than R.sub.ID. The aspect ratio flow metering device may be structurally configured to limit flow of a concentrate into a hydrodynamic mixing apparatus. Also disclosed are methods for using the aspect ratio flow metering device to mix fluids.

A beverage container has a housing, a controllable flow restriction element, and at least two liquid storage compartments in the housing. The housing is relatively rotatable with respect to the controllable flow restriction element about a main axis for rotation of the controllable flow restriction element between a closed liquid flow position and an open liquid flow position. The controllable flow restriction element has openings therein within the housing. Rotation of the controllable flow restriction element toward the closed position effects the closed position. Mixing of liquids from the first liquid compartment and the second liquid compartment are effected by rotational movement of the controllable flow restriction element.

The invention provides a multi-compartment container for storing and dispensing separately a plurality of consumable liquids that can be mixed in an accurate and repeatable manner. Each storage compartment within the container encloses a predetermined quantity of a consumable liquid, wherein the first compartment is filled with a first liquid and the other compartments are filled with second and third liquids. The individual storage compartments are structurally merged to form elongated dispensing compartments each with a first end and a second end, wherein a one-way outlet positioned at the first end and a one-way outlet located at the second end permits passage of liquid from the storage compartments into the corresponding dispensing compartments. Upon fully inverting the container, the designated outlet of each dispensing compartment is opened, wherein precise amounts of liquids in the first, second, and third compartments are dispensed at constant volume ratio using gravity.

A matter displacement and mixing system having a mixing chamber for material to enter, and a vortex aperture that directs air into the mixing chamber at either a high velocity for violent shearing or lower velocity for gentle mixing. This would depend on the shape of the vortex aperture, or the pressure.

A droplet dispersion mechanism performs a first droplet generation process of supplying gas to a chemical liquid, and dispersing the chemical liquid into droplets to acquire chemical liquid droplets. A droplet dispersion mechanism performs a second droplet generation process of supplying gas to a chemical liquid, and dispersing the chemical liquid into droplets to acquire chemical liquid droplets. A droplet mixing mechanism performs a droplet mixing process of mixing the chemical liquid droplets and the chemical liquid droplets to acquire a processing liquid in a form of droplets. A discharge nozzle performs a discharge process of externally discharging the processing liquid received from the droplet mixing mechanism.

A fuel pump for a liquid fuel water injection system of a motor vehicle is provided. The fuel pump includes a low-pressure pump that mixes water from a water tank of the motor vehicle with liquid fuel from a fuel tank of the motor vehicle to a liquid fuel water emulsion and provides the liquid fuel water emulsion at a low pressure. A high-pressure pump is in fluid communication with the low-pressure pump and compresses the liquid fuel water emulsion from the low pressure to a high pressure for injecting the liquid fuel water emulsion into an internal combustion engine of the motor vehicle via an injection rail of the motor vehicle. A pump drive drives the low-pressure pump and the high-pressure pump synchronously with a pump frequency independently from an engine speed of the internal combustion engine of the motor vehicle.

This in-line active and reverse calculating mass balance blending system can maintain a chemical at desired control points, such as with respect to concentration, temperature, and/or pressure, while the output flow rate is changing dynamically to a point of use. A blending unit is configured to receive and blend at least two species and deliver a mixture at selected concentrations to points of use. A controller can be configured to determine a mass balance to maintain the concentrations in the mixture using information from metrology systems and a flow in an output to the at least one point of use. The controller also can be configured to maintain a concentrations in the mixture within a concentration range by controlling flow rates to the blending unit.