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A broadband radio interferometer to investigate the location of fast-moving electromagnetic (EM) sources emitted from lightning discharges has been designed. A sequential triggering technique was applied to the system for recording the data of broadband electromagnetic pulses from 25 to 250 MHz. Once the electromagnetic pulse is detected and its amplitude exceeds a threshold level, the triggering circuit is turned on to record the waveform and get ready to acquire another pulse afterwards. This technique can overcome the limitation of the digitizer's memory due to such high digitization rate and very large bandwidth. We have implemented our system to locate and retrace fast-moving electromagnetic sources emitted from lightning discharges during a field experiment in Australia in summer 1997. As one of the results, a cloud-to-ground lightning discharge has been reconstructed in the two-spatial dimension and in time sequence.

This study is the first case report of the treatment of methicillin-resistant Staphylococcus aureus (MRSA) mediastinitis using therapeutic drug monitoring of the serum and wound exudate concentrations of linezolid in a renal dysfunction patient. In the present study, the serum trough concentration of linezolid was maintained between 2 and 7 μg/mL. Therapeutic drug monitoring dosage adjustments may be especially useful in patients with renal dysfunction and severe MRSA infection.

Summary Three familial cases of juvenile type of paralysis agitans have been reported with the following results H A parkinsonian syndrom not due to a latcrit encephalitis can develop before 20 years of age. 2) Its clinical and anatomical findings are very similar to that of classical paralysis agitans. 3) By a detailed genetic study it is demonstrated that the disease is inherited in a recessive mode. The author's heartfelt thanks are due to Prof. Mitsuda, Prof. Yoshida, and Dr. Kawai for their kind advice in genetics and pathological anatomy in completing this report.

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