摘要:
The invention provides the crystalline imidazole-5-carboxylic acid derivative (I, the chemical name: 2-butyl-4-chloro-1-[2′-(1H-tetrazol-5-yl) 1,1′-biphenyl-methyl]-imidazole-5-carboxylic acid, 1-[(isopropoxy)-carbonyloxy] methyl ester), its preparation method and uses thereof.
摘要:
The present invention provides pharmaceutically acceptable salts of imidazole-5-carboxylic acid derivatives, methods for preparing same and pharmaceutical compositions comprising same. The salts obtained by the present invention can be easily dissolved in common solvents, such as water and methanol. The bioavailability thereof is good in animal body. Thereby it is applicable to be developed as a normal preparation for treating hypertension.
摘要:
The present invention is related to a method of fabricating a rigid-flexible printed circuit board. Specifically, this invention relates to a method of fabricating a rigid-flexible printed circuit board, in which an internal circuit pattern exposed for use in an external pad and a mounting pad is protected from external environments using a resist cover by window etching the base copper foil of a flexible region upon formation of an external circuit pattern as opposed to using a resist cover. Thus the number of fabrication processes and the fabrication costs are decreased and the increase in defect rates due to contamination is prevented, resulting in maximized reliability.
摘要:
A filtering mechanization method is provided for integrating a Global positioning System receiver with an Inertial Measurement Unit to produce highly accurate and highly reliable mixed GPS/IMU position, velocity, and attitude information of a carrier. The GPS filtered position and velocity data are first individually used as measurements of the two local filters to produce estimates of two sets of the local state vector. Then, the estimates of the two sets of local state vectors are mixed by a master filter device to produce global optimal estimates of master state vector including INS (Inertial Navigation System) navigation parameter errors, inertial sensor errors, and GPS correlated position and velocity errors. The estimates of the two sets of local state vector and master state vector are analyzed by a GPS failure detection/isolation logic module to prevent the mixed GPS/IMU position, velocity, and attitude information from becoming contaminated by undetected GPS failures.