Browsing Faculty of Natural Sciences by Title
Now showing items 1278-1297 of 2571
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An Interoperable signaling solution for IP-based Next Generation Networks
(Telkom, 2000)Current VoIP signaling protocols are interoperable with the PSTN SS7 via H.323-to-SS7 or SIP-to-SS7 gateways. As we move toward the Next Generation Network, the PSTN falls away and we work toward carrier-grade VoIP ... -
Interpretation of semen analysis using WHO 1999 and WHO 2010 reference values: abnormal becoming normal
(Wiley, 2017)Reference values of WHO 1999 manual were used for the interpretation of semen analysis until 2010 when new reference values were introduced which have lower cut-off compared to WHO 1999. Therefore, several men who previously ... -
Interventions to reduce pesticide exposure from the agricultural sector in Africa: A workshop report
(MDPI, 2022)Despite the fact that several cases of unsafe pesticide use among farmers in different parts of Africa have been documented, there is limited evidence regarding which specific interventions are effective in reducing ... -
Intrinsic scatter of caustic masses and hydrostatic bias: An observational study
(EDP Sciences, 2017)All estimates of cluster mass have some intrinsic scatter and perhaps some bias with true mass even in the absence of measurement errors for example caused by cluster triaxiality and large scale structure. Knowledge of ... -
An invasive alien Proteaceae lures some, but not all nectar-feeding bird pollinators away from native Proteaceae in South African fynbos
(Plant Biology, 2021)Invasive alien plants often influence pollinator visitation to native plants when sharing pollinator guilds. It is of conservation concern when the invasive alien plant is characterized by floral resources that attract ... -
Investigating battery consumption in low- end smartphones: preliminary results
(International Information Management Corporation, 2017)Due to lack of electricity in the rural communities of Africa, users often have to incur extra expense on recharging their mobile phones. The limited battery capacities of low-end smartphones, therefore, present a barrier ... -
Investigating changes over time of annual rainfall in Zimbabwe
(Copernicus Publications, 2010)There is increasing concern in southern Africa about the possible decline of rainfall as a result of global warming. Some studies concluded that average rainfall in Zimbabwe had declined by 10% or 100 mm during the ... -
Investigating seawater intrusion in republic of South Africa’s heuningnes, Cape Agulhas using hydrogeochemistry and seawater fraction techniques
(MDPI, 2023)The Heuningnes Catchment in the Republic of South Africa was used as a case study in this research to describe the application of saltwater fraction/quantification and hydrogeochemistry methods to evaluate the extent of ... -
Investigating the background and local contribution of the oxidants in London and Bangkok
(Royal Society of Chemistry, 2021)Birth registration marks a child’s right to identity and is the first step to establishing citizenship and access to services. At the population level, birth registration data can inform effective programming and planning. ... -
Investigating the variation of benzene and 1,3 butadiene in the UK during 2000–2020
(MDPI, 2022)The concentrations of benzene and 1,3-butadiene in urban, suburban, and rural sites of the U.K. were investigated across 20 years (2000–2020) to assess the impacts of pollution control strategies. Given the known toxicity ... -
Investigating waves and temperature as drivers of Kelp morphology
(Frontiers Media S.A., 2020)Macroalgal morphological variation is determined to a large extent by a combination of environmental factors, with wave exposure and temperature perhaps the main influences, as they are key environmental properties to ... -
Investigation of a dual-band dual radio indoor mesh testbed
(2018)Scalability of community wireless mesh networks in terms of mesh nodes and mobile end-users along with their anticipated usage profile remains unexplored territory. However, conducting such experiments on a live community ... -
Investigation of bioactive compounds in Crassocephalum rubens leaf and in vitro anticancer activity of its biosynthesized gold nanoparticles
(Elsevier, 2020)The development of cancer therapies has become difficult due to high metastasis, and lack of tissue selectivity, which in most cases affects normal cells. Demand for anticancer therapy is therefore increasing on daily ... -
Investigation of biofuel as a potential renewable energy source
(MDPI, 2021)An accelerating global energy demand, paired with the harmful environmental effects of fossil fuels, has triggered the search for alternative, renewable energy sources. Biofuels are arguably a potential renewable energy ... -
Investigation of distinct gene expression profile patterns that can improve the classification of intermediate-risk prognosis in AML patients
(Frontiers Media, 2023)Acute myeloid leukemia (AML) is a heterogeneous type of blood cancer that generally affects the elderly. AML patients are categorized with favorable-, intermediate-, and adverse-risks based on an individual’s genomic ... -
Investigation of distinct gene expression profile patterns that can improve the classification of intermediate-risk prognosis in AML patients
(Frontiers In Genetics, 2023)Acute myeloid leukemia (AML) is a heterogeneous type of blood cancer that generally affects the elderly. AML patients are categorized with favorable-, intermediate-, and adverse risks based on an individual’s genomic ... -
Investigation of electrochemical performance of the biosynthesized α-Fe2O3 nanorods
(ScienceDirect, 2019)This study concerns with the development of a facile method for the biosynthesis of α-Fe2O3 nanorods through green method with an extract from Persea Americana seeds and the potential use of these nanords in the electrochemical ... -
Investigation of excited 0+ states in 160Er populated via the (p, t) two-neutron transfer reaction
(EDP Sciences, 2018)Many efforts have been made in nuclear structure physics to interpret the nature of low-lying excited 0+ states in well-deformed rare-earth nuclei. However, one of the difficulties in resolving the nature of these states ... -
Investigation of groundwater salinity using geophysical and geochemical approaches: Heuningnes catchment coastal aquifer. Western Cape Province, South Africa
(Springer Science and Business Media Deutschland GmbH, 2021)Seawater intrusion is recognised as a major factor affecting the quality of groundwater in coastal aquifers around the world. To determine the occurrence and extent of saline groundwater intrusion prevailing in the Heuningnes ... -
Investigation of pair-correlated 0+ states in Ba 134 via the Ba 136 (p,t) reaction
(American Physical Society, 2021)We performed a high resolution study of 0 + states in 134 Ba using the 136 Ba ( p , t ) two-neutron transfer reaction. Our experiment shows a significant portion of the L = 0 pair-transfer strength ...