Anti-D immunoglobulin is an effective prophylactic against rhesus isoimmunization. It is generally regarded as ineffective once antibody production has developed though there have been a number of inconclusive reports suggesting it may suppress early sensitization. Anti-D (100μg) was given after delivery of a rhesus (D) positive child to a rhesus (D) negative mother who was shown to have anti-D antibodies at that time by five tests on two separate specimens in two different laboratories and by a weakly positive direct anti-globulin test on the cord blood. In a further pregnancy with a rhesus (D) positive child no antibody was detected by multiple tests including enzyme technique.

The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information.Send comments regarding this burden estimate or any other aspect of this collection of information, including suggesstions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA, 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any oenalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. a. REPORTInvestigation of an Electromagnetic Induction Sensor 14. ABSTRACT SECURITY CLASSIFICATION OF:In recent years, advanced EMI sensors that use a broad range of frequencies long with advanced signal processing have been shown to be capable of discrimination between buried land mines and many types of buried metal clutter. For these EMI sensors to be effective, they must be able to accurately, repeatably, and quickly measure the response of a buried target. This is difficult because the sensor must operate with bandwidths greater than 100 to 1 while accurately measuring signals that are more than 80dB smaller than the direct coupling between the coils. To Investigation of an Electromagnetic Induction SensorReport Title ABSTRACTIn recent years, advanced EMI sensors that use a broad range of frequencies long with advanced signal processing have been shown to be capable of discrimination between buried land mines and many types of buried metal clutter. For these EMI sensors to be effective, they must be able to accurately, repeatably, and quickly measure the response of a buried target. This is difficult because the sensor must operate with bandwidths greater than 100 to 1 while accurately measuring signals that are more than 80dB smaller than the direct coupling between the coils. To accomplish this, the EMI sensor must be very cleverly designed to account for the coupling and for the secondary effects such as the resonances in the coils. In this work, we are investigating a new methods of constructing and extracting information from such EMI sensors. The ultimate goal of this research is the development of an EMI measurement system that can accurately measure the broad-band response of a buried target for both very strong and weak targets. (c) Presentations 1. Waymond R. Scott, Jr. and Michael Malluck, "Electromagnetic Induction Sensor that Uses a Bucking Transformer," 2006 Annual International Symposium on Aerospace/Defense Sensing, Simulation, and Controls, Vol. 6217, Orlando, FL, April 2006. 2. Waymond R. Scott, Jr., "Electromagnetic Induction Sensor that Uses a Bucking Transformer," presented at the 9th Annual Army Landmine/ UXO Basic ...

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