Abstract: A system comprising a first expired drug usability device is provided. The first expired drug usability device comprises a first spectrometer and one or more first processors. The first processors are configured to: obtain at least one expired drug machine learning-artificial intelligence (ML-AI) model associated with a pharmaceutical drug; obtain drug expiration information of a sample of the pharmaceutical drug, wherein the drug expiration information comprises spectrometer data associated with using the first spectrometer on the sample; input the drug expiration information into the at least one expired drug ML-AI model to determine usability information associated with the sample of the pharmaceutical drug; and perform one or more actions based on the usability information.

Abstract: A cathode ray tube is used for quality control in conjunction with a method and apparatus for monitoring seismic data gathers. As seismic reflection data is acquired, it is displayed on a cathode ray tube and visually monitored to determine whether information channels are to be deleted due to excess noise, improper amplification, etc., prior to recording the acquired data.

Abstract: A floating point formatter for changing fixed point serial digital data, such as that received by a seismic data acquisiton system, is disclosed wherein fixed point serial digital data is received and scaled to remove any bias added by preamplification. The scaled data is shifted a predetermined number of bits and a resulting exponent is calculated. The shifted data signal and corresponding exponent are combined and further scaled to permit stacking the data without exceeding the system capacity.

Abstract: An electronic circuit is disclosed wherein a two-stage DC offset filter is provided and implemented serially to coincide with serially implemented seismic data gathers. A first stage corrects the offset in a multichannel system due to amplification stages common to all channels. A second stage includes a circuit for determining the DC offset unique to each channel and compensates for each channel automatically and individually.

Abstract: A building directory display system is disclosed having a light source positioned within a housing and a darkened glass door on the front of the housing. Directly behind the glass door, a plurality of panels are provided on which name strips are positioned. The panel also has a diffuser panel which diffuses light from the light source which then passes through the name strips having a black coating selectively etched to permit light passage therethrough. In order to prevent light from shining through cracks between the panels, each panel has side frames which overlap with one another and which, in combination with a panel retaining frame, permit simple removal of the panels for servicing.