Peripheral neuropathy: etiological and clinical aspects

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Jaundice following cardiopulmonary bypass

Serial liver function tests were performed in 29 adult patients following cardiopulmonary bypass for various open-heart procedures. In 22 patients there was a rise in serum bilirubin above 1·5 mg./100 ml., with clinical jaundice in 19 and bilirubinuria in 15 patients. The incidence of jaundice was related to age, the severity of pre-operative cardiac failure, and the duration of perfusion. Possible mechanisms for jaundice are discussed, and evidence is presented that liver damage may follow extracorporeal circulation.

Applied electrophysiology in nerve and muscle disease. Disorders of neuromuscular transmission

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Search for Trapped Electrons and a Magnetic Moment at Mars by Mariner IV

The Mariner IV spacecraft on 14-15 July 1965 passed within 9850 kilometers of Mars, carrying a solid-state charged-particle telescope which could detect electrons greater than 40 kiloelectron volts and protons greater than 1 million electron volts. The trajectory could have passed through a bow shock, a transition region, and a magnetospheric boundary where particles could be stably trapped for a wide range of Martian magnetic moments. No evidence of charged-particle radiation was found in any of these regions. In view of these results, an upper limit is established for the Martian magnetic moment provided it is assumed that the same physical processes leading to acceleration and trapping of electrons in Earth's magnetic field would be found in a Martian magnetic field. On this basis, the upper limit for the Martian magnetic moment is 0.1 percent that of Earth for a wide range of postulated orientations with respect to the rotational axis of Mars. The implications of these results for the physical and biological environment of Mars are briefly discussed.