Browsing Faculty of Natural Sciences by Title
Now showing items 363-382 of 2571
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A comparative analysis of contraceptive use in Africa: evidence from DHS
(SAGE Publications, 2016)The aim of this article is to show a comparative analysis of contraceptive use in areas of traditionally high fertility that have gone through profound changes. Data have been taken from the latest Demographic and Health ... -
Comparative analysis of human coronavirus-NL63 ORF3 protein homologues
(Academic Journals, 2009)It has been reported in some studies that the newly discovered human coronavirus NL-63 (HCoVNL63) is one of the most common coronaviruses associated with acute respiratory infections. HCoVNL63 was first isolated in 2004 ... -
Comparative analysis of testis and ovary transcriptomes in zebrafish by combining experimental and computational tools
(Wiley, 2004)Studies on the zebrafish model have contributed to our understanding of several important developmental processes, especially those that can be easily studied in the embryo. However, knowledge on late events such as gonad ... -
Comparative analysis of tests used to assess sperm chromatin integrity and DNA fragmentation
(Blackwell Publishing Ltd, 2021)Male infertility has a complex etiology, and many times, the cause is unknown. While routine semen analysis provides an overview of basic semen parameters, such as sperm concentration, motility, viability and morphology, ... -
Comparative analysis of the constitution and implementation of race/skin color field in health information systems: Brazil and South Africa
(Spinger, 2021)The inclusion of race/skin color in Health Information Systems makes it possible to measure health inequities. Brazil and South Africa correspond to countries marked by profound inequalities, multiracial constituted that ... -
Comparative analysis of the use of professional health providers by young mothers in developing countries: A new frontier for health education
(AFAHPER-SD, 2016)Childbearing accelerates the risk of maternal and child morbidity and young mothers have a much higher risk of dying from maternal causes. Therefore, understanding the dynamics of young mothers’ use of professional health ... -
Comparative evaluation of pharmacy students’ knowledge and skills in maternal and child health: Traditional versus integrated curriculum
(MDPI, 2022): Reducing maternal and child mortality is a health priority in South Africa. Therefore, health professional education should produce graduates that can meet these needs. This study compared the maternal and child health ... -
Comparative in vitro transportation of pentamidine across the blood-brain barrier using polycaprolactone nanoparticles and phosphatidylcholine liposomes
(UWC, 2019)Nanoparticles (NPs) have gained importance in addressing drug delivery challenges across biological barriers. Here, we reformulated pentamidine, a drug used to treat Human African Trypanosomiasis (HAT) in polymer based ... -
Comparative phylogeography of parasitic Laelaps mites contribute new insights into the specialist-generalist variation hypothesis (SGVH)
(BMC, 2018)BACKGROUND: The specialist-generalist variation hypothesis (SGVH) in parasites suggests that, due to patchiness in habitat (host availability), specialist species will show more subdivided population structure when compared ... -
Comparative proteomics analysis between maize and sorghum uncovers important proteins and metabolic pathways mediating drought tolerance
(MDPI, 2023)Drought severely affects crop yield and yield stability. Maize and sorghum are major crops in Africa and globally, and both are negatively impacted by drought. However, sorghum has a better ability to withstand drought ... -
A comparative review of decision support tools routinely used by selected transboundary River Basin Organisations
(Taylor and Francis, 2021)As human pressures on water resources increase, the data and decision support (DS) tools used in the governance, development and management of transboundary rivers are likely to become increasingly important. There are no ... -
Comparative study of admissions criteria of a selection of South African universities
(Stellenbosch University, 2011)Summary: The new school-leaving certificate, the National Senior Certificate (NSC), was awarded for the first time in 2008. This necessitated a relook at the entrance requirements for university, as the school subjects ... -
Comparative study of the antioxidant constituents, activities and the gc-ms quantification and identification of fatty acids of four selected helichrysum species
(MDPI, 2022)Helichrysum Mill. (Asteraceae) is a plant genus comprising distinctively of aromatic plants of about 500–600 species. Since most of these plants have not been previously studied, extensive profiling helps to validate ... -
Comparative study on the topical and transdermal delivery of diclofenac incorporated in nano-emulsions, nano-emulgels, and a colloidal suspension
(Springer, 2022)Transdermal delivery of active pharmaceutical ingredients (APIs) can be challenging, since the skin possesses a rate-limiting barrier, which may be overcome when APIs possess certain ideal physicochemical properties. The ... -
Comparative study: the effect of annealing conditions on the properties of P3HT:PCBM blends
(Springer Verlag, 2013)This paper presents a detailed study on the role of various annealing treatments on organic poly(3-hexylthiophene) and [6]-phenyl-C61-butyric acid methyl ester blends under different experimental conditions. A combination ... -
Comparative venom toxin analyses of Nigerian viperidae and elapidae snakes
(Elsevier, 2023)Envenoming by snakebite is a serious health problem that maims and kills a large number of people, primarily in rural areas of developing African countries. The first comparative venom proteomic analyses of four snakes ... -
Comparative whole corona fingerprinting and protein adsorption thermodynamics of PLGA and PCL nanoparticles in human serum
(Elsevier, 2020)Nanoparticles (NPs) based on biocompatible and biodegradable polymers such as poly(lactic-co-glycolic acid) (PLGA) and polycaprolactone (PCL) represent effective systems for systemic drug delivery. Upon injection into the ... -
Comparing community structure on shells of the abalone Haliotis midae and adjacent rock: implications for biodiversity
(Springer Verlag, 2013)This paper concerns the effects on biodiversity of depletion 24 of the South African abalone Haliotis midae, which is a long-lived species with a large corrugated shell that provides a habitat for diverse benthic organisms. ... -
Comparing galaxy clustering in horizon-agn simulated light-cone mocks and video observations
(Oxford University Press, 2019-04-12)Hydrodynamical cosmological simulations have recently made great advances in reproducing galaxy mass assembly over cosmic time – as often quantified from the comparison of their predicted stellar mass functions to observed ... -
Comparing galaxy clustering in horizon-agn simulated light-cone mocks and video observations
(Oxford academic, 2019)Hydrodynamical cosmological simulations have recently made great advances in reproducing galaxy mass assembly over cosmic time – as often quantified from the comparison of their predicted stellar mass functions to observed ...