Abstract: The present disclosure is related to a device for controlling thermal convection velocity of a biochemical reaction. The thermal convection velocity controlling device includes a base body for disposing a tube which is movable, wherein the tube is filled with a buffer of the biochemical reaction; a heating source located at a bottom of the tube or at a side of the tube to heat the buffer; and a flow rate adjusting apparatus for controlling a thermal convection flow direction of the buffer in the tube, whereby the flow rate adjusting apparatus changes a flow velocity and a flow time of the buffer. The present disclosure is also related to a method for controlling thermal convection velocity of a biochemical reaction using the device.

Abstract: A method for steadying a thermal convection flow field in a PCR reaction solution during a thermal convective polymerase chain reaction (PCR) includes steps as follows. A PCR tube is provided. A PCR reaction solution is filled in the PCR tube. A bottom of the PCR tube is heated so that a thermal convection is induced. And the PCR to be is tilted at a tilt angle relative to a vertical line over a ground for causing a single-loop flow in the thermal convection flow field in the PCR reaction solution, whereby a denaturation an annealing reaction and an extension reaction occur sequentially and repeatedly in different temperature regions of the PCR reaction solution.

Abstract: The present invention provides a kind of traffic direction light consisting of a backlight module and several light sources where the backlight module comprises a light guide plate with one side provided with multiple light-reflection points, a reflective sheet with the characteristics of the reflected light ray and applied onto the one side of the light guide plate provided with the light-reflection points, and a diffusion sheet applied onto the other side of the light guide plate with the characteristics to distribute the light rays uniformly; and the light sources are able to cast at least one kind of light ray of different colors and arranged at least at one end of the light guide plate so that the light ray can be cast out through the backlight module.

Abstract: The present disclosure is related to a device for controlling thermal convection velocity of a biochemical reaction. The thermal convection velocity controlling device includes a base body for disposing a tube which is movable, wherein the tube is filled with a buffer of the biochemical reaction; a heating source located at a bottom of the tube or at a side of the tube to heat the buffer; and a flow rate adjusting apparatus for controlling a thermal convection flow direction of the buffer in the tube, whereby the flow rate adjusting apparatus changes a flow velocity and a flow time of the buffer. The present disclosure is also related to a method for controlling thermal convection velocity of a biochemical reaction using the device.

Abstract: A capillary for apparatus of insulated isothermal polymerase chain reaction is mounted onto a test tube holder. The capillary includes a tube which has an elongated tubular housing space that is cut to form an axial cross section with a distance between left and right edges greater than the distance between front and rear edges. When reactants are filled in the elongated tubular housing space and heated to generate convection, the left and right edges of the axial cross section form a narrower passage to reduce flowing speed of heat flow in the convection and increase cycling duration of the convection. Hence reaction duration of the reactants is prolonged, and reaction efficiency of the apparatus of insulated isothermal polymerase chain reaction also is increased.

Abstract: A non-contacting aligning method for planes in a three-dimensional environment is disclosed. The method includes: projecting a light beam in a predetermined incident angle onto a transparent first object and an opaque second object that are facing each other; and calculating a distance between the first and second objects basing on the tangent trigonometric function of the incident angle of the light beam.

Abstract: A non-contacting aligning method for planes in a three-dimensional environment is disclosed. The method includes: projecting a light beam in a predetermined incident angle onto a transparent first object and an opaque second object that are facing each other; and calculating a distance between the first and second objects basing on the tangent trigonometric function of the incident angle of the light beam.