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).

A method of manufacturing a semiconductor device includes providing a matrix frame which includes a plurality of die pads, mounting a semiconductor chip on the respective die pads, and sealing the semiconductor chip in blocks. After the semiconductor chip is sealed by the sealing resin, inner leads which are extended from the sealing resin are punched by a punching blade. Then, the block is diced to individual semiconductor devices by a rotary blade.

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 provides a coal bearing property logging sensitive parameter evaluating method and belongs to the field of unconventional oil and gas exploration and development. The coal bearing property logging sensitive parameter evaluating method is based on coal core scale logging and comprises extracting and establishing coal bearing property logging rapid evaluation indexes and forming an expository mode by combining natural gamma logging value and density logging value with limetone stratum density logging mean value. The coal bearing property logging sensitive parameter evaluating method achieves rapid and intuitional explanation of gas reservoir of coal seams.

The invention discloses a drilling simulation system based on a non-sequential operation mode, which includes an operation module, and the operation module is connected with a student simulation operation module and a teaching operation module, and the teaching operation module interacts with the student simulation operation through an operation pause module The modules are connected, the student operation module is connected with the digital drilling rig simulation module, the digital drilling rig simulation module is connected with a non-sequenced environment simulation module, and the non-sequenced environment simulation module is connected with an environment-free environment simulation module through a random selection module. Sequence occurrence input module, the digital drilling rig simulation module is connected with a downhole situation display module. The beneficial effects of the present invention are: it can prevent several people from making the same mistake, the teaching quality can be improved, the situation in reality can be effectively simulated, and the emergency rescue measures taken when an emergency accident occurs can be simulated more intuitively, so as to improve To deal with emergencies and reduce losses.

A pixel readout circuit for an imaging pixel array, the pixel readout circuit comprising: an input channel for receiving an image signal corresponding to an electrical output of a photosensitive element of a pixel; and an interconnection between the input channel and an output readout facility A circuit comprising a capacitor unit and a signal analyzer. Said capacitive units are controllably linked to input channels for accumulating charges corresponding to received intensities produced by the pixels during a single frame, and to output readout facilities for transferring image data thereto. said signal analysis unit is controllably linked to said input channel for receiving and analyzing at least part of said image signal produced by said pixels during a single frame period, and is connected to said output readout facility, said The signal analysis unit is configured and operable to analyze at least a portion of the image signal by determining an amount of accumulated charge corresponding to the received intensity, and upon detecting that the amount of accumulated charge satisfies a predetermined condition, generating an indication of the Data for an event is generated and the data is sent to the output reading facility.

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.