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Polysaccharides from the South African medicinal plant Artemisia afra: Structure and activity studies
(Elsevier, 2018)
Artemisia afra (Jacq. Ex. Willd), is an indigenous plant in South Africa and other parts of the African continent, where it is used as traditional medicine mostly for respiratory conditions. The objective of this study was ...
Calibration of redox potential in sperm wash media and evaluation of oxidation–reduction potential values in various assisted reproductive technology culture media using MiOXSYS system
(Wiley, 2018)
Oxidation–reduction potential describes the balance between the oxidants and antioxidants in fluids including semen. Various artificial culture media are used in andrology and IVF laboratories for sperm preparation and to ...
Evaluation of reference values of standard semen parameters in fertile Egyptian men
(Wiley, 2018)
The reference values of human semen, published in the WHO’s latest edition in 2010,
were lower than those previously reported. The objective of this study was to evaluate
reference values of standard semen parameters in ...
Synthesis and biological evaluations of NO-donating oxa- and aza-pentacycloundecane derivatives as potential neuroprotective candidates
(MDPI, 2018)
In order to utilize the neuroprotective properties of polycyclic cage compounds, and explore
the NO-donating ability of nitrophenyl groups, an array of compounds was synthesized where the
different nitrophenyl groups ...
Improving photometric redshift estimation using GPz: size information, post processing and improved photometry
(Oxford University Press, 2017)
The next generation of large-scale imaging surveys (such as those conducted with the Large Synoptic Survey Telescope and Euclid) will require accurate photometric redshifts in order to optimally extract cosmological ...
Factors affecting the enrolment rate of students in Higher Education Institutions in the Gauteng province, South Africa
(SAGE, 2018)
The purpose of this research is to investigate and analyse higher education institutions' enrolment and
drop-out rates within the Gauteng province, South Africa. Large-scale secondary data from the General
Household ...
The effect of a warm electron beam on slow electron-acoustic solitons
(AIP Publishing, 2018)
The effects of the inclusion of finite drift speed of a warm electron component on the existence of arbitrary amplitude slow electron-acoustic solitons are investigated in a model with ions and cool, warm, and hot electrons. ...
The kinematic dipole in galaxy redshift surveys
(IOP Publishing, 2018)
In the concordance model of the Universe, the matter distribution { as observed in galaxy number
counts or the intensity of line emission (such as the 21cm line of neutral hydrogen) - should have
a kinematic dipole due ...
Implicit-explicit predictor-corrector methods combined with improved spectral methods for pricing European style vanilla and exotic options
(Kent State University, 2013)
In this paper we present a robust numerical method to solve several types of European style option pricing problems. The governing equations are described by variants of Black-Scholes partial differential equations (BS-PDEs) ...
Relative contribution of various chronic diseases and multi-morbidity to potential disability among Dutch elderly
(2018, 2018)
BACKGROUND: The amount of time spent living with disease greatly influences elderly people’s wellbeing, disability
and healthcare costs, but differs by disease, age and sex.
METHODS: We assessed how various single and ...