摘要:
A method and apparatus for simultaneously recording multiple Fourier Transform Infrared (FT-IR) signals using an interferometer. The analog signals are coupled to switching means which is operable in response to a first control signal for synchronizing the operation of the interferometer and the control circuits and a second control signal for defining data acquisition intervals to direct the sampled data of the analog input signals over a circuit path including Sample and Hold and Analog to Digital Conversion circuits to a processor for storing the digital data corresponding to the analog input signals. The switching means is operated so that samples of the analog input signals are taken in sequence and stored in sequential storage locations in interleaved fashion. The processor is operable under program control to access the digital data so that all data samples for the same input signals are separated to produce an interferogram for each of the input signals. These interferograms can then be Fourier Transformed to produce spectra in the usual manner.
摘要:
In the manufacture of a thin film metal alloy or metal oxide magnetic recording disk, a fluoroether lubricant is bonded to the carbon or hydrogenated carbon overcoat of the disk. The lubricant is applied to the carbon overcoat by dipping the disk in a solution of the lubricant. The lubricated disk is then exposed to the plasma of an inert gas, such as nitrogen. The resulting disk contains a layer of lubricant which is bonded to the disk surface so as to be resistant to spin-off and which has a relatively uniform thickness so as to substantially eliminate the problems of stiction during the operation of the disk file.
摘要:
The invention relates to the hydrohalide salts of L-.alpha. -methyl-3,4-dihydroxyphenylalanine (methydopa). The method of preparing these and related compounds in the absence of water or other polar solvents is also shown.
摘要:
Methanol is vaporized at a temperature of from about 200.degree. C.-455.degree. C. and passed over a cobalt molybdate catalyst or a doped cobalt molybdate catalyst at a flow rate of from 60-200 cc./minute. The effluent gas comprises essentially methane and hydrogen in addition to some water vapors and CO.sub.2.
摘要:
A novel improved molecular sieve is prepared by a caustic wash process. The sieves so prepared show improved properties in reactions involving e.g., superior acid scavenging ability.
摘要:
Thin film recording media are protected and lubricated by overcoating them with a carbon overcoat applying a lubricant to said overcoat and bonding the lubricant to the carbon overcoat by irradiating it by UV radiation.