34results about How to "Intuitive explanation" patented technology

Provided are a spacer capable of avoiding a poor connection due to the suction of solder when the clearance width between a soldered semiconductor device and a printed circuit board is made constant, and a manufacturing method for the spacer. The spacer includes an electrically insulating base member, and at least one solder guiding terminal. The base member has a bottom face, a top face and at least one side face, of which the bottom face and the top face are out of contact with each other whereas the side face contacts one or both the bottom face and the top face. The solder guiding terminal covers the bottom face partially, the top face partially, and the side face partially or wholly. A solder guiding face as the surface of a portion of the solder guiding terminal covering the side face is not normal to the bottom face.

A method and device for autofocusing in a microscope (11), wherein two preferably spot-shaped, markers (12) are generated on an object, the spacing (d) of the markers representing an indication of the defocusing of a working plane (9) in the object from the focal plane (10) of the microscope (11). A focus drive (6) displaces the working plane (9) into the focal plane (10) as a function of the marker spacing (d). In order to allow rapid and exact focusing to be performed, a detector (4) acquires an image of the markers (12) generated on the object, an evaluation unit (7a) determines the spacing of the markers (12), and a control unit (7b) adjusts, as a function of the determined marker spacing (d), the speed of the focus drive (6) at which the working plane (9) is displaced into the focal plane (10).

In order to provide an elastic polyurethane thread with excellent antibacterial and deodorant properties as well as excellent color fastness, an elastic polyurethane thread is made which consists of polyurethanes which have polymer diols and diisocyanates as the starting materials, contains metallic phosphates in the range of 0.5-10 wt %, and has an emitted quantity of monoamine compounds with molecular weights of 120 or less of 100 μg / m2 or more.

An auxetic bi-stable structure that comprises an auxetic curved shell movable between a first and a second stable position, and a rigid element. At least part of the surface of the auxetic curved shell is joined to the rigid element such that the curved shell is movable with respect to the rigid element between the first and second stable positions.

An auxetic bi-stable structure that comprises an auxetic curved shell movable between a first and a second stable position, and a rigid element. At least part of the surface of the auxetic curved shell is joined to the rigid element such that the curved shell is movable with respect to the rigid element between the first and second stable positions.

The invention relates to a method for calculating an empirical relation expression between gas-liquid Sherwood numbers inside a porous medium by applying CT. The method comprises the steps of firstly calculating the bubble volume content and a gas-liquid mass transfer Sherwood number inside the porous medium of different gas injection and liquid injection directions according to a CT image stack; calculating a liquid-phase Reynolds number according to lamellar average porosity, the bubble volume content and the liquid injection speed; classifying the acquired Sherwood numbers, the Reynolds numbers and the volume content values into different data sets according to different gas injection and liquid injection directions; dividing each data set into a plurality of different local data sets, setting a target empirical relation expression, performing local nonlinear regression analysis, and quickly searching and eliminating abnormal values which are possibly caused by the measurement process by being combined with corresponding CT images; and then performing global nonlinear regression analysis on the remaining data to acquire an empirical relation expression between gas-liquid Sherwood numbers inside the porous medium under different gravity conditions. The calculation and convergence speed of a fitting model is accelerated, a real and effective data result in the experiment process is completely covered, and the model precision is improved.