Browsing Faculty of Natural Sciences by Title
Now showing items 1958-1977 of 2571
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Rapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta)
(NISC, 2009)Tissue nitrogen content and thallus colour were quantified using a rapid assessment method based on the Pantone® matt uncoated formula guide for raft-cultivated Gracilaria gracilis Steentoft Irvine et Farnham at Saldanha ... -
Rare earths’ recovery from phosphogypsum: An overview on direct and indirect leaching techniques
(MDPI, 2021)The need for rare earth elements (REEs) in high-tech electrical and electronic-based materials is vital. In the global economy, deposits of natural REEs are limited except for countries such as China, which has prompted ... -
Rare fungal species isolated from Libyan diabetic patients
(Infection Control Africa Network (ICAN), 2016)BACKGROUND AND OBJECTIVES: The emerging resistance of Candida species to antifungals routinely used to treat candidiasis in HIV patients and in patients with diabetes mellitus (DM) has resulted in the frequent isolation ... -
A rare new species of the genus Wiborgiella (Crotalarieae, Fabaceae)
(Elsevier, 2014)The new species Wiborgiella argentea is described. It is closely similar to Wiborgiella leipoldtiana and W. fasciculata but differs in its single-stemmed habit, densely sericeous leaves, wing petals that are longer than ... -
A re-assessment of the nearest neighbour alignment of the X-ray isophotes of galaxy clusters
(Oxford University Press, 2006)Alignment is defined as the tendency of the distribution of pointing angles between the major axes of clusters and their nearest neighbours to be more concentrated towards small values for small nearest neighbour distances, ... -
Re-engineering of South Africa’s primary health care system: where is the pharmacist?
(South African Academy of Family Physicians, 2016)South Africa’s transition towards a district-based health system (DHS) aims to offer health promotion and prevention services at community level, through re-engineered primary health care (PHC) services. Along with pharmacy ... -
Reactive oxygen species and male reproductive hormones
(BMC, 2018)Reports of the increasing incidence of male infertility paired with decreasing semen quality have triggered studies on the effects of lifestyle and environmental factors on the male reproductive potential. There are ... -
Reactive oxygen species and male reproductive hormones
(BMC, 2018)Reports of the increasing incidence of male infertility paired with decreasing semen quality have triggered studies on the effects of lifestyle and environmental factors on the male reproductive potential. There are ... -
Reactive oxygen species in male reproduction: A boon or a bane?
(Blackwell Publishing Ltd, 2021)Reactive oxygen species (ROS) are free radicals derived from oxygen during normal cellular metabolism. ROS play a crucial role in the physiological processes and signalling pathways associated with male fertility. At ... -
Reactive oxygen species in male reproduction: A boon or a bane?
(Wiley, 2020)Reactive oxygen species (ROS) are free radicals derived from oxygen during normal cellular metabolism. ROS play a crucial role in the physiological processes and signalling pathways associated with male fertility. At ... -
A real time processing system for big data in astronomy: Applications to Hera
(Elsevier, 2021)As current- and next-generation astronomical instruments come online, they will generate an unprecedented deluge of data. Analyzing these data in real time presents unique conceptual and computational challenges, and their ... -
Real-time assessment of Candida biofilm disruption by Galenia africana
(2022-05-25)Candida species often cause opportunistic infections in immunocompromised patients and are able to form highly structured biofilms that protect the yeast cells from the external environment and the action of antimicrobials. ... -
Real-time assessment of Candida biofilm formation
(Elsevier, 2021-09)Background: Candida infections are responsible for increased morbidity and mortality in immunocompromised patients, particularly when the Candida biofilm is composed of drug-resistant species. Although the biofilm formation ... -
Real-time assessment of interspecies candida biofilm formation
(Bentham Open, 2022-12-30)Background: Candida infections are responsible for increased morbidity and mortality in immunocompromised patients, with Candida having the ability to form highly structured biofilms that protect them from the external ... -
Real-time gesture recognition using eigenvectors
(2009)This paper discusses an implementation for gesture recognition using eigenvectors under controlled conditions. This application of eigenvector recognition is trained on a set of defined hand images. Training images are ... -
Reasons for missed appointments linked to a public-sector intervention targeting patients with stable chronic conditions in South Africa: results from in-depth interviews and a retrospective review of medical records
(BioMed Central, 2017)BACKGROUND Missed appointments serve as a key indicator for adherence to therapy and as such, identifying patient reasons for this inconsistency could assist in developing programmes to improve health outcomes. In this ... -
Recalibrating the Wide-field Infrared Survey Explorer (WISE) W4 Filter
(Cambridge University Press, 2014)We present a revised effective wavelength and photometric calibration for the Wide-field Infrared Survey Explorer W4 band, including tests of empirically motivated modifications to its pre-launch laboratory-measured ... -
Recent advancements in the breeding of sorghum crop: current status and future strategies for marker-assisted breeding
(Frontiers, 2023)Sorghum is emerging as a model crop for functional genetics and genomics of tropical grasses with abundant uses, including food, feed, and fuel, among others. It is currently the fifth most significant primary cereal crop. ... -
Recent advances in the detection of interferon‑gamma as a TB biomarker
(Springer, 2021)Tuberculosis (TB) is one of the main infectious diseases worldwide and accounts for many deaths. It is caused by Mycobacterium tuberculosis usually afecting the lungs of patients. Early diagnosis and treatment are essential ... -
Recent Advances in the Development of Antimicrobial and Antifouling Biocompatible Materials for Dental Applications
(MDPI, 2021)The risk of secondary bacterial infections resulting from dental procedures has driven the design of antimicrobial and antifouling dental materials to curb pathogenic microbial growth, biofilm formation and subsequent ...