D G van der Merwe

  • Citations Per Year
Learn More
PURPOSE A technique for treating whole-body skin with an electron linear accelerator with nominal energies in the range 4-8 MeV is presented. Stationary fields at an extended source-skin distance are used with the patient treated in a reclined position. METHODS AND MATERIALS The relative beam data, absolute dosimetry measurements and the patient setup(More)
PURPOSE Radiosensitivity in relation to the human immunodeficiency virus (HIV) status is important in South Africa as the prevalence of HIV infections is high. In this study the in vitro chromosomal radiosensitivity of HIV positive individuals was investigated and compared with that of HIV negative individuals. MATERIALS AND METHODS Blood samples from 59(More)
A historical survey and critical evaluation concerning discipleship in the Fourth Gospel The historical survey about discipleship in the Fourth Gospel indicates that the literature of the second half of this century was sketchy about this theme. Up till 1972 a thematic-theological approach highlighted some characteristics of discipleship as they appeared in(More)
A tracer technique using the stable isotope calcium-48 was developed to facilitate studies of human calcium metabolism. Small samples of 1 ml serum were used. Calcium levels were determined with good precision using neutron-activation analysis after pre-concentration of the serum calcium by oxalate precipitation. The method has sufficient sensitivity to(More)
  • 1