Browsing Faculty of Natural Sciences by Title
Now showing items 138-157 of 2567
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Assessing the role of water resources protection practice for sustainable water resources management: A review
(MDPI, 2022)Water resource protection is central to sustainable water supply management for human wellbeing and for the ecological ecosystem to flourish. This review paper focuses on highlighting the role of groundwater and surface ... -
Assessing the surface material quality of unpaved rural roads to understand susceptibility to surface deterioration. A case study of four rural areas in KwaZulu-Natal, South Africa
(Elsevier, 2019)Road surface deterioration is one of the most common problems of unpaved road networks worldwide. It is areduction in the performance of a road due to a decline in road surface material quality. Accumulated damagefrom ... -
Assessing the variation of river channel reach inflows on transmission losses
(World Water Policy, 2022)Arid and semi-arid regions are characterized by limited water availability throughout the year and highly variable streamflows. River channel transmission losses add another uncertainty to the complex flow regimes. However, ... -
Assessment of catchment scale groundwater-surface water interaction in a non-perennial river system, heuningnes catchment, South Africa
(Scientific African, 2023)A significant proportion of the world's river networks are non-perennial rivers that are characterized by segments of dry, standing, and flowing water. However, the role of groundwater and the controlling elements governing ... -
Assessment of concentration levels of contaminants in groundwater of the Soutpansberg region, Limpopo Province, South Africa
(MDPI, 2022)Groundwater contributions towards improved food security and human health depend on the level of contaminants in groundwater resources. Many people in rural areas use groundwater for drinking purposes without treatment ... -
Assessment of drinking water quality using metal index, degree of contamination and hazard indices on ground water sources in an agricultural tropical environment
(Informatics Publishing Limited, 2023)The study conducted in the dry and rainy seasons of 2019 assessed the levels of metals in groundwater sampled from boreholes and dug wells in Ikwo, southeastern Nigeria. Nine water samples were analysed for calcium, iron, ... -
Assessment of genetic diversity in Tunisian populations of Medicago polymorpha based on SSR markers
(Instituto de Investigaciones Agropecuarias, 2021)Medicago polymorpha L. is a herbaceous legume that can be a useful pasture crop, especially in Mediterranean climates. This study aimed to analyze the genetic variation in five populations of M. polymorpha collected from ... -
Assessment of microbial contamination of groundwater in upper Limphasa River catchment, located in a rural area of northern Malawi
(Water Research Commission, 2012)In rural Africa, scientific evidence is often lacking to guide the scaling-up of groundwater as the safest source of potable water. An investigation was conducted in the Upper Limphasa Catchment in northern Malawi to ... -
Assessment of temporal and spatial evolution of bacterial communities in a biological sand filter mesocosm treating winery wastewater
(The Society for Applied Microbiology, 2013)AIMS: To assess the impact of winery wastewater (WW) on biological sand filter (BSF) bacterial community structures, and to evaluate whether BSFs can constitute alternative and valuable treatment-processes to remediate WW. ... -
An assessment of the age reporting in Tanzania population census
(Academic Research Publishing, 2012)The objective of this paper is to provide data users with a worldwide assessment of the age reporting in the Tanzania Population Census 2012 data. Many demographic and socio-economic data are age-sex attributed. However, ... -
An assessment of the influence of host species, age, and thallus part on kelp-associated diatoms
(MDPI, 2020)Diatom community composition and abundances on different thallus parts of adult and juvenile specimens of Ecklonia maxima and Laminaria pallida were examined in False Bay, South Africa, using light and scanning electron ... -
Associated risk factors of STIs and multiple sexual relationships among youths in Malawi
(PLoS, 2015)Having unprotected sex with multiple sexual partners (MSP) is the greatest risk factor for human immunodeficiency virus (HIV) and other sexually transmitted infections (STIs) among youths. Young people with MSPs are less ... -
Association among sperm chromatin condensation, sperm DNA fragmentation and 8-OHdG in seminal plasma and semen parameters in infertile men with oligoasthenoteratozoospermia
(Wiley, 2021)The present study aimed to investigate the clinical role of standard sperm diagnosis parameters (sperm concentration, motility, morphology) as well as aniline blue staining of histones, 8-OHdG, TUNEL assay were performed ... -
Association analysis of two single-nucleotide polymorphisms of the RELN gene with autism in the South African population
(Mary Ann Liebert, Inc., 2013)BACKGROUND: Autism (MIM209850) is a neurodevelopmental disorder characterized by a triad of impairments, namely impairment in social interaction, impaired communication skills, and restrictive and repetitive behavior. A ... -
The association between environmental exposures during childhood and the subsequent development of Crohn's Disease: A score analysis approach
(Public Library of Science, 2017)Background Environmental factors during childhood are thought to play a role in the aetiology of Crohn's Disease (CD). In South Africa, recently published work based on an investigation of 14 childhood environmental exposures ... -
The association between gender and tooth loss in a small rural population of South Africa
(Science Publishing Group, 2013)Periodontal disease, which attacks the gums and supporting structures of the tooth, is one of the major causes of tooth loss in adults. Few studies on general well-being have compared the differences in oral health between ... -
Association between Physical Fitness and Cardiovascular
(MDPI, 2023)Firefighters perform strenuous work in dangerous and unpredictable environments requiring optimal physical conditioning. The aim of this study was to investigate the association between physical fitness and cardiovascular ... -
Association between pro-inflammatory alleles and allergic phenotypes in Xhosa adolescents
(Wiley, 2018)BACKGROUND: Significant differences exist in the prevalence, spectrum, and severity of allergic diseases between developing and developed countries and between subpopulations within single countries. These discrepancies ... -
Association between promoter methylation of MLH1 and MSH2 and reactive oxygen species in oligozoospermic men—A pilot study
(Wiley, 2017)MLH1 and MSH2 are important genes for DNA mismatch repair and crossing over during meiosis and are implicated in male infertility. Therefore, the methylation patterns of the DNA mismatch repair genes MLH1 and MSH2 in ... -
The association of mthfr (rs1801133) with hypertension in an indigenous South African population
(Frontiers Media, 2022)The current study sought to investigate the association between the methylenetetrahydrofolate reductase (MTHFR) variant (rs1801133) and the risk of developing hypertension (HTN) in an indigenous South African population.A ...