Prof Dirk Hermanus van Papendorp

Prof Dirk Hermanus van Papendorp

Prof Dirk Hermanus van Papendorp was born in Pretoria in 1949. He is married to Selomé (Nel) and they have four children and ten grandchildren. He obtained his Medical degree at the University of Pretoria in 1974 and his ECFMG diploma from Philadelphia, USA, the following year. After his internship at the Pretoria Academic Hospital he practiced for 2 years as general practitioner at the Van Riebeeck Medical Centre and Monument Park centre, Pretoria. Thereafter he moved to the Cape Province to continue his studies. He completed his BSc Honours degree (cum laude) at the University of Stellenbosch and later, in 1985 his PhD degree with his dissertation on the subject: Clinical physiological parameters for the evaluation of femur neck fractures’. In 1978 he was appointed as lecturer in the Physiology Department, Faculty of Medicine, University of Stellenbosch and promoted to senior lecturer in 1980. In 1986 he joined the Physiology Department, University of Pretoria as associate Professor and he was promoted to full Professor and Head of the Department in 1990. He retired as HOD in 2014. During this period he was appointed as Part time District Surgeon, Department of Health; Part time Consultant Osteoporosis clinic, HF Verwoerd Hospital; Principal Medical Officer, Student’s Health Service, UP; non executive Medical Director, Techpulse Technologies (PTY) Ltd and appointed by the Minister of Labour as Medical assessor to assist the Compensation Commissioner in court cases pertaining to injury on duty. Professor van Papendorp is particularly interested in the subject of metabolic bone diseases thus his research interest lies particularly in the field of calcium, osteoporosis, and Vitamin D and of lately,...
Professor Johan Koeslag

Professor Johan Koeslag

Abbreviated Biography of Emeritus Professor Johan KoeslagM.B., Ch.B., Ph.D. (Cape Town) Johan Koeslag was born in Witbank, Mpumalanga (previously the Eastern Transvaal), in 1940. He spent his childhood in Indonesia, Holland, Zululand, and Kenya. He received his secondary schooling at the Prince of Wales School in Nairobi, Kenya, from where he went on to study Medicine at the University of Cape Town from 1959 to 1964. He did his internship in Medicine, and in Obstetrics and Gynaecology at Groote Schuur Hospital in 1965, followed by a senior internship in Surgery at McCord’s Hospital in Durban. He then worked as a Registrar in Internal Medicine at the Erasmus University Academic Hospital in Rotterdam, the Netherlands. After a short spell in General Practice in Durban, he joined the Department of Physiology at the University of Cape Town as a lecturer in 1972. He obtained his PhD in 1980 (Thesis title: “Post-exercise ketosis in non-diabetic subjects”), and was promoted to ad hominem Associate Professor in Physiology and Human Biology in 1987. He was appointed Head of the Department of Medical Physiology at the University of Stellenbosch in 1990. He has published 82 full articles in professional journals, on a wide variety of subjects ranging from exercise physiology, post-exercise ketosis, physiological homeostats (especially the Insulin-Glucagon-hGH counter-regulatory system, and how disturbances of its mechanism might cause Type 2 Diabetes Mellitus), as well as various aspects of evolutionary biology (such as the engine of speciation, the evolution of sex, the evolutionary affordability of males, punctuated evolutionary equilibria, the evolution of cooperation and koinophilia, which he believes provides a parsimonious explanation of many of the above...