Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 3659-3678 of 4820
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Radionuclides and toxic elements transfer from the princess dump to water in Roodepoort, South Africa
(Elsevier, 2016)High concentrations of radionuclides and toxic elements in gold mine tailings facilities present a health hazard to the environment and people living near that area. Soil and water samples from selected areas around the ... -
Ramsar-vleilande in Suid-Afrika: historiese en huidige akwatiese navorsing
(Suid-Afrikaans Akademie vir Wetenskap en Kuns, 2018)Vleilande verskaf ’n verskeidenheid van goedere en funksies en dus moet die vleilande wat nog natuurlik is, beskerm word. Die Ramsar-konvensie vir vleilande van internasionale belang is al vanaf 1975 in werking in Suid-Afrika ... -
Range expansion of the Common Dwarf Gecko, Lygodactylus capensis: South Africa’s most successful reptile invader
(SEH, 2019)Here we describe the invasion history in South Africa of the Common Dwarf Gecko Lygodactylus capensis (Smith, 1849), particularly into areas distant from its native range. We provide maps that include detailed records ... -
Rank one perturbations of H-positive real matrices
(Elsevier, 2013)We consider a generic rank one structured perturbation on H-positive real matrices. The case with complex rank one perturbation is treated in general, but the main focus of this article is the real rank one perturbation. ... -
RAPD profiling of Bacillus spp with PGPR potential and their effects on mineral composition of tomatoes
(Kamla-Raj, 2016)Bacillus species have been known to antagonize and inhibit the growth of various plant pathogens but quality of crop from such plants is yet to be investigated. The aim of this study is to analyze the mineral composition ... -
Rapid changes in biomass burning aerosols by atmospheric oxidation
(Wiley, 2014)Primary and secondary aerosol particles originating from biomass burning contribute significantly to the atmospheric aerosol budget and thereby to both direct and indirect radiative forcing. Based on detailed measurements ... -
Rapid Global Expansion of the Fungal Disease Chytridiomycosis into Declining and Healthy Amphibian Populations
(Public Library of Science (PLoS), 2009) -
Rapid thermal cycling of three phase change materials (PCMs) for cooking applications
(Springer, 2018)The suitability of the use of acetanilide, meso-erythritol and In-48Sn as phase change materials (PCMs) in latent heat thermal storage systems (LHTES) for cooking applications has been investigated under high charging and ... -
Rasch analysis of the Meaning in life Questionnaire among adults from South Africa, Australia, and New Zealand
(BioMed Central, 2016)Background: Meaning in life is a key indicator of subjective well-being and quality of life. Further developments in understanding and enhancing the construct will depend inter alia on the sound measurement thereof. This ... -
The rate of release of Cry1Ab protein from Bt maize leaves into water. Short communication
(WRC, 2019)Transgenic Bt maize plants are genetically modified to contain genes of Bacillus thuringiensis that encode for δ-endotoxins (Cry1Ab protein) that have insecticidal properties. These endotoxins target certain lepidopteran ... -
Rational matrix solutions to the Leech equation: the Ball-Trent approach revisited
(Elsevier, 2013)Using spectral factorization techniques, a method is given by which rational matrix solutions to the Leech equation with rational matrix data can be computed explicitly. This method is based on an approach of J.A. Ball ... -
Rational solutions to an extended Kadomtsev-Petviashvili-like equation with symbolic computation
(Elsevier, 2016)Associated with the prime number p = 3, the generalized bilinear operators are adopted to yield an extended Kadomtsev-Petviashvili-like (eKP-like) equation. With symbolic computation, eighteen classes of rational solutions ... -
RBBP6: a potential biomarker of apoptosis induction in human cervical cancer cell lines
(Dovepress, 2016)Overexpression of RBBP6 in cancers of the colon, lung, and esophagus makes it a potential target in anticancer therapy. This is especially important because RBBP6 associates with the tumor suppressor gene p53, the inactivation ... -
The re-acceleration of galactic electrons at the heliospheric termination shock
(IOP Publishing, 2017)Observations by the Voyager spacecraft in the outer heliosphere presented several challenges for the paradigm of diffusive shock acceleration (DSA) at the solar wind termination shock (TS). In this study, the viability of ... -
Re-awakening of GRS 1716-249 after 23 yr, observed by Swift/XRT and NuSTAR
(Oxford Univ Press, 2019)In this work, we present a spectral and temporal analysis of Swift/XRT and NuSTAR observations of GRS 1716–249 during its recent 2016–2017 outburst. This low-mass X-ray binary underwent an extraordinary outburst after a ... -
Re-description of two new tydeid records (Acari: Trombidiformes) with a key to Tydoidea species of Turkey
(Systematic and Applied Acarology Society, 2019)Brachytydeus maga Kuznetzov and Tydeus plumosus Karg are re-described as new records for Turkey. The male and tritonymph of the latter are also re-described. A key to all the tydeoid species of Turkey is given. The identity ... -
Re-evaluating the NO2 hotspot over the South African Highveld
(ASSAf, 2012)Globally, numerous pollution hotspots have been identified using satellite-based instruments. One of these hotspots is the prominent NO2 hotspot over the South African Highveld. The tropospheric NO2 column density of ... -
A re-examination of the type material of Entomoneis paludosa (W Smith) Reimer and its morphology and distribution in African waters
(Czech Phycological Soc, 2015)The current study aims to enhance the understanding of the distribution and morphology of the diatom Entomoneis paludosa W Smith 1853 in African waters. The type material of Entomoneis paludosa (W Smith) Reimer was examined ... -
Re-thinking the fundamentals of EIA through the identification of key assumptions for evaluation
(Taylor & Francis, 2019)EIA is increasingly being questioned as a decision-making instrument of choice for decision makers. In addressing these concerns, the paper aims to re-think the fundamentals of EIA through the identification of key assumptions ...
