The application relates to microfluidic apparatus and methods of use thereof. Provided in one example is a microfluidic device comprising: a first fluidic input and a second fluidic input; and a fluidic intersection channel to receive fluid from the first fluidic input and the second fluidic input, wherein the fluidic intersection channel opens into a first mixing chamber on an upper region of a first side of the first mixing chamber, wherein the first mixing chamber has a length, a width, and a depth, wherein the depth is greater than about 1.5 times a depth of the fluidic intersection channel; an outlet channel on an upper region of a second side of the first mixing chamber, wherein the outlet channel has a depth that is less than the depth of the first mixing chamber, and wherein an opening of the outlet channel is offset along a width of the second side of the first mixing chamber relative to the fluidic intersection.

Described herein is a method for producing a sealant. The method includes mixing a first material with a second material at a manufacturing site to produce the sealant. The method also includes applying x-ray energy to the sealant at the manufacturing site. The method includes measuring an amount of fluorescence emitted from the sealant in response to applying the x-ray energy. The method also includes calculating a mix ratio of the first and second materials of the sealant based on the amount of fluorescence. The method includes determining whether the mix ratio is within a predetermined mix ratio range.

A fluid preparation system includes a tank, a chemical supply line, a mixer, and a deionized (DI) water supply line. The tank contains a first chemical solution. The chemical supply line is coupled to the tank and configured to supply the first chemical solution. The mixer is coupled to the tank. The DI water supply line is coupled to the mixer and configured to supply DI water. The first chemicals solution and the DI water are mixed at the mixer to generate a second chemical solution.

A mixing apparatus includes a phosphoric acid aqueous solution supply, an additive supply, a tank, a phosphoric acid aqueous solution supply path and an additive supply path. The phosphoric acid aqueous solution supply is configured to supply a phosphoric acid aqueous solution. The additive supply is configured to supply an additive configured to suppress precipitation of a silicon oxide. The phosphoric acid aqueous solution supply path is configured to connect the phosphoric acid aqueous solution supply with the tank. The additive supply path is configured to connect the additive supply with the tank. The additive is supplied while fluidity is imparted to the phosphoric acid aqueous solution supplied from the phosphoric acid aqueous solution supply into the tank.

The application relates to microfluidic apparatus and methods of use thereof. Provided in one example is a microfluidic device comprising: a first fluidic input and a second fluidic input; and a fluidic intersection channel to receive fluid from the first fluidic input and the second fluidic input, wherein the fluidic intersection channel opens into a first mixing chamber on an upper region of a first side of the first mixing chamber, wherein the first mixing chamber has a length, a width, and a depth, wherein the depth is greater than about 1.5 times a depth of the fluidic intersection channel; an outlet channel on an upper region of a second side of the first mixing chamber, wherein the outlet channel has a depth that is less than the depth of the first mixing chamber, and wherein an opening of the outlet channel is offset along a width of the second side of the first mixing chamber relative to the fluidic intersection.

The invention discloses a multifunctional microfluidic detection chip. The detection chip comprises a chip body, on which a sample injection chamber, a sample quantitative chamber, a sample overflow chamber, a diluent storage chamber, a diluent quantitative chamber, a diluent overflow chamber, a quantitative mixing chamber, a reaction chamber and vent holes are disposed; a sample to be detected is injected into the sample injection chamber, and enters the sample quantitative chamber through a microfluidic channel, and the excess reaction sample enters the sample overflow chamber, a diluent in the diluent storage chamber enters the diluent quantitative chamber through a microfluidic channel, and the excess diluent enters the diluent overflow chamber; the reaction chamber includes one or more reaction cavities and a sample blank cavity; after the sample in the sample quantitative chamber is mixed with the diluent in the diluent quantitative chamber uniformly in the quantitative mixing chamber, mixed liquid enters the reaction cavities through microfluidic channels and reacts with a reaction reagent for detection, and enters the sample blank cavity at the same time as a sample blank for detection. The invention can effectively reduce the sample consumption, improve the accuracy of the detection results, and simultaneously detect multiple indicators.

A cold water saponification method is disclosed. The method is for preferred use in industrial applications such as mining operations wherein saponification of fatty acids is required. Broadly, the method comprises the steps of filling a tank with a solution comprising water, a base and fatty acids, installing a mixer capable of creating a vortex in order to effectively saponify fatty acid particles. The use of a high-shear mixer installed vertically has been proven successful in saponifying fatty acids in cold water.

The present invention relates to a single-stage process for the production of starch blends in a twin-screw extruder or two twin-screw extruders arranged in series, where i) the starch, together with a plasticizer, passes through a wetting section of length 8D to 30D in an extruder or in a wetting section of length 8D to 80D if two extruders are used at temperatures below the gelatinization temperature of the starch, with mixing, where D is defined as the screw diameter of the screw cylinder and the wetting section is defined as starting at that point on the extruder screw at which the starch and the entire or partial quantity of plasticizer encounter one another and ending at that point in the extruder at which the starch is gelatinized and is digested to give thermoplastic starch; ii) in a plastifying section of length 10D to 50D the extruder temperature is adjusted stepwise to above 130° C., where the starch is digested, destructured and thermoplastified, and is dispersed in a starch-immiscible polymer, and a water content below 5%, based on the starch blend, is established before the material leaves the extruder; where the starch-immiscible polymer is added in molten or granular form at any desired point in the extruder, and a mixture of all of the components present is consequently produced.

The present invention discloses a method for confined impinging jets (CIJ) mixing with imbalanced momenta. The method includes the following steps: connecting each inlet of a CIJ mixer with a to-be-mixed fluid by using an inlet conduit; connecting an outlet of the mixer with an inlet of a suction device by using an outlet conduit; and starting the suction device, enabling the to-be-mixed fluids to enter the mixer sequentially through the conduits and the inlets of the mixer and to mix in a mixer chamber, and the mixture is then sucked out from the outlet of the mixer and flows sequentially through the conduit, the inlet of the suction device, and the outlet of the suction device.

Methods and systems of admixing hydrocarbon liquids from two or more sets of tanks into a single pipeline to provide in-line mixing thereof. In an embodiment of the in-line mixing system, hydrocarbon liquids stored in at least one tank of each of two or more sets of tanks positioned at a tank farm are blended into a blend flow pipe via in-line mixing and the blended mixture is pumped through a single pipeline. In one or more embodiments, the in-line mixing system employs a separate spillback or recirculation loop that is fluidly connected to each set of the two or more sets of tanks to control the flow of the hydrocarbon fluid/liquid from each set of tanks to the blend flow pipe. Associated methods of operating one or more embodiments of the system include regulation of spillback or recirculation loop flow rate and/or pressure to drive the actual blend ratio towards a desired blend ratio.