Abstract: Disclosed are novel 4-alkenyl- and 4-alkynyl oxindoles having the formula ##STR1## and the pharmaceutically acceptable salts thereof, wherein R.sup.1, R.sup.2, R.sup.3, a, b, and X are as defined herein. These compounds inhibit cyclin-dependent kinases (CDKs), in particular CDK2. These compounds and their pharmaceutically acceptable salts, and prodrugs of said compounds, are anti-proliferative agents useful in the treatment or control of cell proliferative disorders, in particular cancer, more particularly, the treatment or control of breast and colon tumors. Also disclosed are pharmaceutical compositions containing the compounds of formula I and II as well as intermediates useful in the preparation of the compounds of formula I and II.

Abstract: A servo stripe pattern for determining the longitudinal position of the tape with respect to the tape head. A data field on each frame of the servo pattern includes a digital one or a zero. An adjacent series of data fields are arranged in a predetermined sequence defining synchronization and position count fields. The position count field allows the tape controller to accurately determine where, along the length of the tape, the tape head is currently positioned.

Abstract: A magnetic tape servo pattern with different frequency signals to define the frame boundary. A significantly different frequency field is used to signal the transition from one frame to the next.

Abstract: A magnetic tape servo pattern including track identification. Information from a track identification area intersecting one or more tracks on each frame in combination with information identifying the track as odd or even, is used to uniquely identify the track.

Abstract: A method for detecting a frame edge in a servo stripe on a length of magnetic tape. The method includes converting an analog signal to a digital signal and detecting a change in digital signal frequency at a frame edge. A detection signal is generated in response to the detected frequency change.

Abstract: A thin film magnetic tape head including a split top pole. The split top pole configuration allows multiple patterns to be written simultaneously onto a servo band.

Abstract: A method for identifyng a servo track. Information from the servo track about the odd or even number of the track is combined with information about the presence or absence of a track identification area to identify the track number.

Abstract: A method for determining the longitudinal position of a length of magnetic tape with respect to the tape head. A data field on each frame of the servo stripe includes a digital one or a zero. An adjacent series of data fields are arranged in a predetermined sequence defining synchronization and position count fields. Identifying the position count field allows the tape controller to accurately determine where, along the length of the tape, the tape head is currently positioned.

Abstract: A magnetic tape servo pattern including track identification. Information from a track identification area intersecting one or more tracks on each frame in combination with information identifying the track as odd or even, is used to uniquely identify the track.

Abstract: A thermally responsive mixing valve assembly is provided that is suitable for use in supplying tempered water to an emergency shower or eyewash system. In one embodiment, the assembly includes a valve body defining hot and cold inlets, hot and cold chambers, a mixing chamber and an outlet. The valve body supports a plurality of thermostatic valves all in fluid communication with the hot and cold liquid chambers and the mixing chamber. Each of the valves includes a thermostat operable to stroke as shuttle valve within a valve liner. The valve liner includes a number of apertures in communication with the cold liquid chamber and a bore in communication with the hot liquid chamber. The shuttle valve modulates within the valve liner to restrict hot water flow through the hot liquid bore, but the flow of cold water through the apertures is unrestricted. The valve liner also includes cold bypass slots that are normally closed by the shuttle valve but that are opened upon a failure of the thermostat.