Abstract: Compressor surge on turbocharged Diesel engines when operating in temporary throttled airflow, such as are required for the periodic regeneration of lean NOx traps is prevented by controlled operation of a boost air blow-off valve positioned downstream of the compressor outlet of the turbocharger.

Abstract: A test administration center is provided at which a plurality of balance diagnostic tests are administered on a patient. A test evaluation center, located remotely from the test administration center, is provided at which diagnostic data is evaluated by a skilled clinician. A computer network links, and transfers data from, the test administration center to both the test evaluation center, where the data is evaluated, and to a patient database, where the data is stored.

Abstract: An automated search apparatus is disclosed for detecting leaks in liquid impoundments usually defined by a geomembrane layer. A voltage gradient is created within the impoundment by means of a source electrode. The search apparatus contains pairs of electrodes coupled to differential amplifiers which allow plotting of the voltage gradient within the impoundment. The search vessel is controlled via radio telemetry, and its position may be tracked using optical theodolites. A distortion in the equipotential lines associated with the voltage gradient indicates the presence of a leak.

Abstract: A catamenial napkin conforming to the female body shape may be secured to the wearer without a supporting belt. The napkin has a backing formed from an impermeable plastic-like material. The longitudinal ends of the napkin have non-irritating adhesive strips that may attach the napkin to the body. The sanitary napkin has at least two layers of absorptive material separated by a perforated layer of otherwise impermeable material. The outer layer of absorptive material is covered by a non-irritating gauze. The napkin is completely filled with absorptive material to each longitudinal end, and is held together by non-irritating adhesive strips along each longitudinal edge.