Der Reaktionsmechanismus der im vorstehenden Referat beschriebenen Umwandlung von 2‐Alkoxy‐1,1‐dialkyl‐diazenium‐tetrafluoroboraten, z.B. (I), durch Hydroxyl‐Ionen in trans‐α‐Hydroxy‐dialkyldiazene, z.B. (II), wird aufgeklärt.
Vibrator seismic sources are operated concurrently to reduce the time required for acquiring the data for a particular seismic survey. Separate seismic signals are produced for each of the concurrently operated vibrator seismic sources."--SAC 4,910,715 43.40.Ph MARINE SEISMIC STREAMER CABLE
This is a division of an application that resulted in the granting of patent 4,419,544. A method of measuring hearing impairment characteristics in a number of frequency bands is described. If any band shows unacceptable hearing characteristics for receiving sound, the signal that would go to that band is transposed to one or more other bands where the hearing characteristics are acceptable. The transposition is accomplished by reading 4O ADAPTIVE NOISE CANCEL L ER 44 1
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