Browsing Faculty of Natural Sciences by Title
Now showing items 1111-1130 of 2571
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A hydrogeomorphological approach to quantification of groundwater discharge to streams in South Africa
(Water Research Commission, 2002)In South Africa, the flow requirements for maintaining the normal functioning of aquatic ecosystems is termed the “ecological reserve”, and these should be determined when a licence application for water allocation is ... -
Hydrological modelling and climate adaptation under changing climate: A review with a focus in sub-Saharan Africa
(MDPI, 2022)Empirical evidence continues to show that climate change remains a threat to the stability of the hydrologic system. As the climate system interacts with the hydrologic cycle, one significant repercussion of global warming ... -
Hydromedusae off the Orange River Mouth, Southern Africa
(NISC (Pty) Ltd and Taylor& Francis, 2003)A total of 242 zooplankton samples from the upper 100 m of the water column was collected discontinuously from March 1997 to January 1999 off the Orange River mouth on the west coast of southern Africa. Six species of ... -
Hypertension in African populations: Review and computational insights
(MPDI, 2021)Hypertension (HTN) is a persistent public health problem affecting approximately 1.3 billion individuals globally. Treatment-resistant hypertension (TRH) is defined as high blood pressure (BP) in a hypertensive patient ... -
Hyphenated LC-ICP-MS/ESI-MS identification of halogenated metabolites in South African marine ascidian extracts
(The South African Chemical Institute, 2018)Extracts of 13 species of marine ascidian collected in Algoa Bay were analyzed by LC-ICP-MS/ESI-MS. This technique allows parallel analysis of the molecular species and the presence of certain elements. The LC-ICP-MS/ESI-MS ... -
Hypoglycaemic activity of biosynthesized copper oxide nanoparticles in alloxan-induced diabetic Wister rats
(Wiley, 2023)Diabetes mellitus (DM) is a metabolic disorder that affects the body's ability to produce or use insulin. This study evaluated the hypoglycaemic activity of biosynthesized copper oxide nanoparticles (CuO-NPs) ... -
Hypolithic and soil microbial community assembly along an aridity gradient in the Namib Desert
(Springer, 2013)The Namib Dessert is considered the oldest desert in the world and hyperarid for the last 5 million years. However, the environmental buffering provided by quartz and other translucent rocks supports extensive hypolithic ... -
“I just kept quiet”: Exploring equity in a service-learning programme
(International Association for Research on Service-Learning and Community Engagement (IARSLCE), 2016)Social justice underpins the sustainable development goal of health for all. In developing countries, social injustices are particularly severe and widespread, demanding critical and immediate attention. This article describes ... -
IC and RC band time-series observations of some bright ultracool dwarfs
(Oxford University Press, 2005)The results of more than 100 h of CCD photometric monitoring of 10 L dwarfs and two T dwarfs are presented. Reasonable evidence is shown for IC band variability in DENIS 0255−4700, DENIS 1705−0516 and 2M 2104−1037. ... -
ICT and information security perspectives in E-Health Systems
(Medwell Journals, 2010)This study examines issues pertinent to the rapidly evolving use of information as a currency of modern economies. Access to information has important benefits that can be achieved in many areas including, social-economic ... -
Identification and characterization of a heat-inducible Hsp70 gene from Sorghum bicolor which confers tolerance to thermal stress
(Springer, 2015)This study describes the first detailed molecular characterization of the heat shock protein 70 (Hsp70) gene from Sorghum bicolor, MN1618 designated as SbHsp70-1. The full-length cDNA of SbHsp70-1 consists of 2524 bp ... -
Identification and characterization of microRNAs expressed in the African malaria vector Anopheles funestus life stages using high throughput sequencing
(BioMed Central, 2016)Background: Over the past several years, thousands of microRNAs (miRNAs) have been identified in the genomes of various insects through cloning and sequencing or even by computational prediction. However, the number of ... -
Identification and characterization of the Trichoplusia ni Single Capsid Nuclear Polyhedrosis Virus p10 gene
(Springer Verlag, 2000)The p10 gene was identified and characterized from the Trichoplusia ni single capsid nuclear polyhedrosis virus (TniSNPV). The p10 open reading frame (ORF) sequence was identified following sequencing of the ends of the ... -
Identification and delineation of groundwater-dependent ecosystems (GDEs) in the Khakea–Bray transboundaryaquifer region using geospatial techniques
(Taylor and Francis Group, 2023)Identifying and delineating groundwater-dependent ecosystems(GDEs) is critical in understanding their location, distribution andgroundwater allocation. However, this information is inadequatelyunderstood due to limited ... -
Identification and profiling of salinity stress-responsive proteins in Sorghum bicolor seedlings
(Elsevier, 2012)Sorghum bicolor, a drought tolerant cereal crop, is not only an important food source in the semi arid/arid regions but also a potential model for studying and gaining a better understanding of the molecular mechanisms ... -
Identification of a novel alkaliphilic esterase active at low temperatures by screening a metagenomic library from Antarctic desert soil
(American Society for Microbiology, 2009)The cold deserts of the McMurdo Dry Valleys, South Victoria Land, Eastern Antarctica, are widely acknowledged as having the harshest soil environments on Earth (6, 8, 26). Despite the apparent hostility of the environment, ... -
Identification of a novel protein with guanylyl cyclase activity in Arabidopsis thaliana
(Elsevier, 2003)Guanylyl cyclases (GCs) catalyze the formation of the second messenger guanosine 3 ,5 -cyclic monophos- phate (cGMP) from guanosine 5 -triphosphate (GTP). While many cGMP-mediated processes in plants have been reported, ... -
Identification of biomarkers for the accurate and sensitive diagnosis of three bacterial pneumonia pathogens using in silico approaches
(Springer Nature, 2020): Pneumonia ranks as one of the main infectious sources of mortality among kids under 5 years of age, killing 2500 a day; late research has additionally demonstrated that mortality is higher in the elderly. A few ... -
Identification of new respiratory viruses in the new millennium
(MDPI, 2015)The rapid advancement of molecular tools in the past 15 years has allowed for the retrospective discovery of several new respiratory viruses as well as the characterization of novel emergent strains. The inability to ... -
Identification of novel prognostic markers of survival time in high-risk neuroblastoma using gene expression profiles
(Impact Journals, 2020)Neuroblastoma is the most common extracranial solid tumor in childhood. Patients in high-risk group often have poor outcomes with low survival rates despite several treatment options. This study aimed to identify a genetic ...