Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 538-557 of 4825
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Cell-free DNA: preanalytical variables
(Elsevier, 2015)Since the discovery of cell-free DNA (cfDNA) in human blood, most studies have focused on diagnostic and prognostic uses of these markers for solid tumors. Except for some prenatal tests and BEAMing, cfDNA analysis has not ... -
Cellular bioenergetics is impaired in patients with chronic fatigue syndrome
(PLOS, 2017)Chronic fatigue syndrome (CFS) is a highly debilitating disease of unknown aetiology. Abnormalities in bioenergetic function have been cited as one possible cause for CFS. Preliminary studies were performed to investigate ... -
Celtis sinensis Pers. (Ulmaceae) naturalised in northern South Africa and keys to distinguish between Celtis species commonly cultivated in urban environments
(AOSIS, 2018)Background: Alien Celtis species are commonly cultivated in South Africa. They are easily confused with indigenous C. africana Burm.f. and are often erroneously traded as such. Celtis australis L. is a declared alien ... -
Centaurus A: hard x-ray and high-energy gamma-ray light curve correlation
(MDPI, 2019)Centaurus A, powered by a 55 million solar mass supermassive black hole, has been intensively monitored in all accessible wavelength ranges of the electromagnetic spectrum. However, its very-high energy gamma ( γ ) ray ... -
Centaurus A: hard X-ray and soft gamma-ray lightcurve correlation
(Sissa Medialab, 2017)Centaurus A (Cen A), powered by a 55 million solar mass supermassive black hole, has been intensively monitored in all accessible wavelength ranges of the electromagnetic spectrum. However, its gamma-ray flux, both in the ... -
Central systolic pressure and a nonessential amino acid metabolomics profile: the African prospective study on the early detection and identification of cardiovascular disease and hypertension
(Wolters Kluwer, 2019)Objectives: Early-life exposures to cardiovascular risk factors may manifest as early vascular ageing, a phenomenon to which black populations are more prone. The metabolome provides insight into the current state and ... -
Centre‐based and expedition‐based (wilderness) adventure experiential learning regarding personal effectiveness: an explorative enquiry
(Taylor & Francis, 2011)The purpose of this study is to compare a centre‐based adventure programme (CBAP) with an expedition‐based wilderness programme (EBWP) with regard to personal effectiveness. In comparing these two programmes, this study ... -
Centre‐based and expedition‐based (wilderness) adventure experiential learning regarding personal effectiveness: an explorative enquiry
(Taylor & Francis, 2011)The purpose of this study is to compare a centre-based adventure programme (CBAP) with an expedition-based wilderness programme (EBWP) with regard to personal effectiveness. In comparing these two programmes, this study ... -
A century of taxonomic uncertainty: re-description of two species of tapeworms (Diphyllobothriidea) from Arctic seals
(Springer, 2018)Diphyllobothriid tapeworms are well-known parasites of mammals including humans. Most species are known for centuries, but the validity of many species and their classification are still poorly understood. Based on new ... -
Cephalenchus driekieae n. sp. (Nematoda: Tylenchidae) from South Africa, a new member of the genus with a long pharyngeal overlap
(Exeley, 2020)Cephalenchus driekieae n. sp. is described and illustrated based on its morphological, morphometric, and molecular characteristics. This new species is mainly characterized by its short stylet 11.5 to 13.0 µm, and 13.5 to ... -
Ceratothoa retusa (Schiœdte & Meinert, 1883) (Isopoda, Cymothoidae), a variable species of fish parasitic marine isopod from the Indian Ocean
(Brill Academic Publishers, 2014)Ceratothoa retusa (Schiœdte & Meinert, 1883) is redescribed from the lectotype (here designated) collected from Mozambique, and the range is extended to include the Gulf of Suez in the Red Sea. Ceratothoa retusa is distinctive ... -
Cerebrospinal fluid amino acid profiling of pediatric cases with tuberculous meningitis
(Frontiers Media, 2017)Background: In Africa, tuberculosis is generally regarded as persisting as one of the most devastating infectious diseases. The pediatric population is particularly vulnerable, with infection of the brain in the form of ... -
Cerebrospinal fluid in tuberculous meningitis exhibits only the L-enantiomer of lactic acid
(BioMed Central, 2016)Background: The defining feature of the cerebrospinal fluid (CSF) collected from infants and children with tuberculous meningitis (TBM), derived from an earlier untargeted nuclear magnetic resonance (NMR) metabolomics ... -
Ceropegia terebriformis
(South African National Biodiversity Institute, 2015) -
Cervical squamous intraepithelial lesions and associated cervical infections in an HIV-positive population in rural Mpumalanga, South Africa
(Wiley, 2013)Background: The incidences of genital human papillomavirus (HPV) infection, associated squamous intraepithelial lesions and cervical squamous cell carcinoma are significantly increased in HIV-positive women. The role of ... -
The challenge of conserving amphibian megadiversity in Madagascar
(Public Library of Science (PLOS), 2008) -
Challenges and emerging solutions to the land-based plastic waste issue in Africa
(Elsevier, 2018)In recent years, there has been a tremendous increase in work that focuses on the amount and types of waste entering the marine environment from multiple geographies around the world. To date, however, there are few reports ... -
Challenges and opportunities for biological mass spectrometry core facilities in the developing world
(The Association of Biomolecular Resource Facilities, 2018)The developing world is seeing rapid growth in the availability of biological mass spectrometry (MS), particularly through core facilities. As proteomics and metabolomics becomes locally feasible for investigators in these ... -
Challenges in reconciling observations and theory of the brightest high-energy flare ever of 3C 279
(PoS, 2017)Recent high-energy missions have allowed keeping watch over blazars in flaring states, which provide deep insights into the engine powered by supermassive black holes. However, having a quasar caught in a very bright ... -
Challenges in the potable water industry due to changes in source water quality: case study of Midvaal Water Company, South Africa
(Water Research Commission, 2016)Midvaal Water Company treats hypertrophic water abstracted from the Vaal River to supply bulk wholesome potable water to their consumers in compliance with the South African National Standard (SANS) 241:2015 for drinking ...