User profiles for R. Henkel

Ralf Henkel

Professor of Reproductive Biology, University of the Western Cape
Verified email at uwc.ac.za
Cited by 13955

[HTML][HTML] Sperm preparation for ART

RR Henkel, WB Schill - Reproductive biology and endocrinology, 2003 - Springer
The onset of clinical assisted reproduction, a quarter of a century ago, required the isolation
of motile spermatozoa. As the indication of assisted reproduction shifted from mere …

Male infertility

…, R Henkel, S Vij, M Arafa, MKP Selvam, R Shah - The Lancet, 2021 - thelancet.com
It is estimated that infertility affects 8–12% of couples globally, with a male factor being a
primary or contributing cause in approximately 50% of couples. Causes of male subfertility vary …

[HTML][HTML] Bibliometrics: tracking research impact by selecting the appropriate metrics

…, SC Esteves, A Harlev, R Henkel… - Asian journal of …, 2016 - journals.lww.com
Traditionally, the success of a researcher is assessed by the number of publications he or
she publishes in peer-reviewed, indexed, high impact journals. This essential yardstick, often …

Examination of peer–group contextual effects on aggression during early adolescence

DL Espelage, MK Holt, RR Henkel - Child development, 2003 - Wiley Online Library
Peer group contextual effects of aggressive behavior among middle school students (6th–8th
graders) were examined using a short–term longitudinal design. More specifically, the …

[BOOK][B] The significance test controversy: A reader

DE Morrison, RE Henkel - 2006 - books.google.com
… (iii) our reliance on the foregoing procedure places on us no obligation to specify in
advance the size (r) of the samples to which we propose to apply the test, and hence no pre-…

[HTML][HTML] Influence of deoxyribonucleic acid damage on fertilization and pregnancy

R Henkel, M Hajimohammad, T Stalf, C Hoogendijk… - Fertility and sterility, 2004 - Elsevier
… In this study, we found an expected strong correlation (r = 0.6672; P<.0001) between both
apoptosis markers but no correlation with fertilization rates or pregnancy. However, our data …

[HTML][HTML] Effect of reactive oxygen species produced by spermatozoa and leukocytes on sperm functions in non-leukocytospermic patients

R Henkel, E Kierspel, T Stalf, C Mehnert, R Menkveld… - Fertility and sterility, 2005 - Elsevier
… Likewise, the matches between the TUNEL assay with the amount or externally produced
ROS (r … The authors wish to express their thanks to Sharon Henkel for expert linguistic review. …

[HTML][HTML] Male oxidative stress infertility (MOSI): proposed terminology and clinical practice guidelines for management of idiopathic male infertility

…, MKP Selvam, R Henkel, R Shah… - The world journal of …, 2019 - synapse.koreamed.org
Despite advances in the field of male reproductive health, idiopathic male infertility, in which
a man has altered semen characteristics without an identifiable cause and there is no …

DNA fragmentation of spermatozoa and assisted reproduction technology

R Henkel, E Kierspel, M Hajimohammad, T Stalf… - Reproductive …, 2003 - Elsevier
… The authors also wish to thank Mrs S Henkel for her excellent linguistic review. … Henkel R,
Schill WB 1998 Sperm separation in patients with urogenital infections. Andrologia 30 (suppl. 1…

[BOOK][B] Tests of significance

RE Henkel - 1976 - books.google.com
HENKEL, associate professor of sociology at the University of Maryland, received his
doctorate degree from the University of Wisconsin. Associate editor of the Pacific …