摘要:
According to the present invention, a continuous layer liquid used as a continuous layer of a diffusion phenomenon is injected into the first reservoir, and passed through the channels to the second reservoirs to fill the plurality of radially formed channels with the continuous layer liquid. Then, a predetermined amount of diffusion experiment reagent, for example, a coloring liquid used as a diffusion substance of the diffusion phenomenon is injected into the first reservoir. This causes the diffusion experiment reagent to be diffused from the first reservoir to the second reservoirs only by the diffusion phenomenon. At this time, the radially formed channels have the different sectional areas, and thus the diffusion experiment reagent is diffused through the channels at different velocities. This allows the diffusion phenomena that occur in the micro channels or the diffusion velocities to be observed or measured with ease using an inexpensive device.
摘要:
According to a blood plasma collection tool of the present invention, a phenomenon that blood cells in blood spontaneously precipitate due to an effect of gravitational force takes place in the very narrow microspace (separation part) having the very narrow depth in the direction of gravitational force of not greater than 1 mm, and the overflow channel functions as a dam against the separation part so that the blood plasma separated out as supernatant fluid can overflow beyond the overflow channel, whereby the blood cells separated out can be prevented from entering the collection part. Therefore, blood plasma can be collected by accurately and readily separating blood plasma and blood cells in a small amount of blood from each other in a short time, using a small tool having a simple structure.
摘要:
At least one of a nucleus forming process, a nucleus growing process, a chemical sensitizing process, and a spectral sensitizing process for producing a silver halide photographic emulsion is performed by using a microreactor. A minute region of the microreactor is used to precisely perform a reaction of nucleus formation. A condition under which host grains are allowed to react with newly supplied silver halide nuclei is made uniform to cause uniform crystal growth. A predetermined quantity of molecules for chemical sensitization is doped in a crystal lattice of a nucleus of silver halide to effect a sensitizing process. Alternatively, a spectral sensitizing process in which a single molecular layer of a spectral sensitizer is uniformly adsorbed on a silver halide nucleus grain surface is securely carried out.
摘要:
The solution I is spouted from a first nozzle into a mixing chamber as a high-pressure jet stream of not less than 1 MPa and as a turbulent flow having a Reynolds number of not less than 10000 during the flow into the mixing chamber, and the solution II having a lower pressure than the solution I is spouted from a second nozzle into the mixing chamber as an orthogonal flow which intersects the solution I almost at right angles. The two solutions are mixed together and caused to react with each other, with the result that a mixed reaction solution Z containing alloy particles Z is formed.
摘要:
The producing unit for continuously producing metal microparticles formed of a multicomponent alloy accompanied by the generation of a byproduct gas through an early reaction of the formation of the metal particles comprises a first mixing unit for continuously supplying and mixing a plurality of solutions for conducting the early reaction, a second mixing unit for continuously supplying another solution to the reaction liquid containing the metal microparticles formed in the early reaction and for mixing the two solutions, to introduce dissimilar metal atoms into the crystal lattices of the metal microparticles, and a gas-liquid separation unit that is installed in a midway of the pipe which is made so as to have enough length to finish the early reaction, and which continuously passes the reaction liquid to the second mixing unit from the first mixing unit, and that continuously removes the byproduct gas generated with the proceeding of the early reaction.
摘要:
In the scientific phenomena evaluation device of the present invention, a plurality of elongated grooves each having a cross-sectional area of not more than 1 mm2 are formed, an end of each of the plurality of flow passages joins in at one meeting point and furthermore, a liquid absorption device is provided. Therefore, it is possible to qualitatively observe scientific phenomena, such as the dispersion phenomena of molecules. Also, accuracies sufficient for experiencing high technologies, for example, various phenomena such as the diffusion phenomenon of a liquid, heat transfer phenomenon of a liquid, mixing phenomenon of liquids and chemical reactions of a liquid that occur in this fine flow passage are obtained, consumption of chemical agents and the like is small and environmental burdens are small. Therefore, this evaluation device of scientific phenomena is appropriate as an educational tool for scientific experiments.
摘要:
An evaluation apparatus of scientific phenomena, including: a base plate of a plate-like body on whose surface is formed an elongated groove having a transversely cross-sectional area of not more than 1 mm2; and a cover plate that is disposed on a surface of the base plate in close contact therewith and forms a fine flow passage on the base plate by covering the elongated groove, wherein scientific phenomena in the fine flow passage can be visually recognized.
摘要:
According to the scientific phenomenon evaluation device of the present invention, a test liquid is injected into the first reservoir while sample liquids are injected into the second reservoirs. When the test liquid is supplied to the second reservoirs by being caused to flow through the branching-structure channel, the test liquid and the sample liquid mix and react with each other to cause, for example, a scientific phenomenon such that the colors of the sample liquid change. Thus, the plurality of sample liquids can be evaluated by injecting the test liquid one time. In this case, the scientific phenomenon can be grasped with a single glance since at least the scientific phenomenon in the second reservoirs is visually recognizable. Moreover, the scientific phenomenon evaluation device of the present invention can be effectively used as a portable pH measurement experimental device.
摘要:
When a reaction liquid is passed through a gas-liquid separation pipe having a larger volume per unit length than the volume per unit length of a pipe, a headspace part into which gas can be released is formed above the gas-liquid separation pipe, and the byproduct gas generated by the reaction changes into bubbles, moves upward in the reaction liquid, and is continuously released from a gas-liquid interface into the headspace part. While the gas is removed in the gas-liquid separation pipe, the pressure of the headspace part is controlled so as to be constant by a pressure adjustment device.
摘要:
The mixing state of static mixing is optimized, so that it is possible to form silver halide emulsion particles in small sizes with an excellent mono-dispersion characteristic. An aqueous solution of haloid salt is blown out from a first nozzle into a mixing chamber as a rectilinear flow of turbulent flow, and before eddy viscosity formed when the rectilinear flow is blown out from the first nozzle of a small diameter to the mixing chamber of a greater diameter reaches a maximum, or before a maximum flow speed of the rectilinear flow is reduced to {fraction (1/10)} or below, an aqueous solution of silver nitrate is blown out from a second nozzle as a crossflow of turbulent flow which crosses the rectilinear flow at a substantially right angle and is entrained by the rectilinear flow, so that the two solutions are allowed to mix and react with each other instantaneously, and a liquid resulting from the mixing and reaction is discharged from a discharge duct.