The Linear Polarization of Radio Sources Between 11 and 20 cm Wavelength. III. Influence of the Galaxy on Source Depolarization and Faraday Rotation

The dependence on galactic latitude of the 11 and 20 cm polarization of 355 extraga.la.ctic sources reveals no definite evidence of depolarization within the Ga.laxy. The distribution of Faraday rotation can be explained in terms of a. field along the local spiral arm, deformed by magnetic "loops" in the solar neighbourhood.

The Linear Polarization of Radiation from Jupiter at 6 cm Wavelength

At a wavelength of 6 cm the degree of linear polarization of the radiation from Jupiter is 0�076�0�002. The variation of the direction of polarization with longitude of the central meridian is consistent with the increased period of rotation determined by Komesaroff and McCulloch (1967). There is evidence of an asymmetricl beaming of the nonthermal radiation with longitude in addition to the latitude asymmetry that was detected previously by Roberts and Komesaroff (1965). The mean flux density normalized to a distance of 4�04 a.u. is 1O�7�0�2 f.u. The small nonthermal contribution (3'7 f.u.) is further evidence for a high frequency cutoff in the synchrotron radiation; the thermal component corresponds to a brightness temperature of about 250oK.

Simulation of emergency bed occupancy

A method is described whereby data relating to the duration of hospital stay and the mean admissions rates may be used to simulate the bed occupancy of patients admitted as emergencies. The method may be used to predict the effects upon bed occupancy of various rotational admission schedules.

The choline acetyltransferase of human placenta

1. Various methods for the extraction of choline acetyltransferase (acetyl-CoA-choline O-acetyltransferase, EC 2.3.1.6) from immature human placenta (18-28 weeks of gestation) are described. 2. The crude enzyme was found to be stable at -18 degrees and +4 degrees under a variety of conditions. 3. Purification methods, including ammonium sulphate fractionation, gel filtration on various grades of Sephadex and DEAE-Sephadex fractionation, have yielded a preparation of high specific activity.