摘要:
A method for improving calcium carbonate by causing calcium carbonate particles to undergo contact reaction with an acid gas capable of reacting with calcium carbonate for finely uniformizing the calcium carbonate particle size and, at the same time, coating the surface of the calcium carbonate particles with the calcium salt of the acid of the acid gas.
摘要:
The waveform created by a circuit simulator is selected. The input data 11 inputted by an inputting means are obtained for a point on the waveform or the waveform. The selected waveform and the input data 11 are analyzed by a waveform analyzing means 12 to create circuit parameter updating information 13. On the basis of the circuit parameter updating information 13, net list data are updated and the circuit simulator 5 is operated recursively. Thus, the circuit design capable of making a desired waveform can be realized.
摘要:
In a semiconductor integrated circuit mask layout verification method, a layout pattern division condition 108, according to which a plurality of specific layout patterns that need to have identical circuit characteristics are included, is input in a condition input step 109. In a data division step 103, input mask layout design data is divided into a plurality of layout pattern groups according to the layout pattern division condition. In a standard pattern selection step 105, a standard pattern serving as a standard in pattern matching is selected for each of the divided layout pattern groups. In a pattern matching step 106, for each of the layout pattern groups, layout patterns included in that layout pattern group are compared with the standard pattern.