Browsing Research Output by Title
Now showing items 482-501 of 13381
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Ammonia gas sensing characteristics of V2O5 nanostructures: a combined experimental and ab initio density functional theory approach
(Elsevier, 2020)A combined experimental and density functional theory of α-V2O5 for ammonia gas sensing have been investigated. The material was synthesized from hydrated NH4VO3 in CVD at 400 °C in N2 atmosphere for different time (12 h ... -
Ammonia-oxidizing microorganisms: key players in the promotion of plant growth
(Instituto de Agroindustria, 2017)Nitrogen (N) is the most important mineral nutrient required by plants. Although some plants can directly utilize N, ammonium (NH4+) and nitrate (NO3-) are the only forms of N that are usable to most plants. Ammonia-oxidizing ... -
Ammonium sulphate and/or ammonium bisulphate as extracting agents for the recovery of aluminium from ultrafine coal fly ash
(Elsevier, 2017)We recently showed that the selective extraction of aluminium from the amorphous phase of a South African ultrafine coal fly ash can be achieved via thermochemical treatment with ammonium sulphate for 1 h followed by aqueous ... -
Amorphous azithromycin with improved aqueous solubility and intestinal membrane permeability
(Taylor & Francis, 2015)Azithromycin (AZM) is a poorly soluble macrolide antibacterial agent. Its low solubility is considered as the major contributing factor to its relatively low oral bioavailability. The aim of this study was to improve the ... -
Amorphous sulfadoxine: a physical stability and crystallization kinetics study
(Springer Nature, 2016)Poor aqueous solubility of drugs and the improvement thereof has always been a challenge for the pharmaceutical industry.With this, one of the focuses of the pharmaceutical research scientist involves investigating ... -
The ampakine, Org 26576, bolsters early spatial reference learning and retrieval in the Morris water maze: a subchronic, dose-ranging study in rats
(Wolters Kluwer, 2009)Ampakines have shown beneficial effects on cognition in selected animal models of learning. However, their ability to modify long-term spatial memory tasks has not been studied yet. This would lend credence to their possible ... -
Amphibian chytrid fungus in Africa – realigning hypotheses and the research paradigm
(Wiley, 2020)The amphibian chytrid fungus Batrachochytrium dendrobatidis (Bd), responsible for numerous amphibian declines and extinctions, was previously thought to originate from the African continent. This was based on infected ... -
Amphibian fungal panzootic causes catastrophic and ongoing loss of biodiversity
(AAAS, 2019)Rapid spread of disease is a hazard in our interconnected world. The chytrid fungus Batrachochytrium dendrobatidis was identified in amphibian populations about 20 years ago and has caused death and species extinction at ... -
Amphibian skin defences show variation in ability to inhibit growth of Batrachochytrium dendrobatidis isolates from the Global Panzootic Lineage
(Microbiology Society, 2017)The fungal pathogen Batrachochytrium dendrobatidis has caused declines and extinctions in hundreds of amphibian species across the world. Virulence varies among and within lineages; the Global Panzootic Lineage (GPL) is ... -
Amphibian survey and current absence of Batrachochytrium dendrobatidis (Bd) in Ivoloina Park, Toamasina (eastern Madagascar)
(Taylor & Francis, 2014)Amphibians are threatened globally by the chytridiomycete fungus Batrachochytrium dendrobatidis (Bd), which is still expanding in range. Madagascar, rich in amphibian diversity, remains one of the few places that the fungus ... -
Amphibian symbiotic bacteria do not show a universal ability to inhibit growth of the global panzootic lineage of Batrachochytrium dendrobatidis
(Amer Soc Microbiology, 2015)Microbiomes associated with multicellular organisms influence the disease susceptibility of hosts. The potential exists for such bacteria to protect wildlife from infectious diseases, particularly in the case of the globally ... -
Amphibiophilus mooiensis n. sp. (Nematoda: Amphibiophilidae), a parasite of Amietia delalandii (Duméril & Bibron) (Amphibia: Pyxicephalidae) from South Africa
(Springer, 2018)Four species of the genus Amphibiophilus Skrjabin, 1916 from pyxycephalid frogs in southern and central Africa are currently recognised as valid. Several specimens of Amphibiophilus were found in material from the common ... -
An amplified description for the elusive Cordylogyne argillicola (Apocynaceae-Asclepiadoideae) from Namibia
(Magnolia Press, 2017)Owing to the brief description, and in the absence of any known type collection of Cordylogyne argillicola, the application of the name remained unresolved for over a century. Type material that was recently discovered in ... -
An amplified description for the elusive Cordylogyne argillicola (Apocynaceae-Asclepiadoideae) from Namibia
(Magnolia Press, 2017)Owing to the brief description, and in the absence of any known type collection of Cordylogyne argillicola, the application of the name remained unresolved for over a century. Type material that was recently discovered in ... -
Amsterdam ""deur die vensters van fiksie"". Literêre verbondenheid en relasionele ruimte in Die sneeuslaper van Marlene van Niekerk
(Stellenbosch : Suider-Afrikaanse Vereniging vir Neerlandistiek, 2012)This article examines the connectedness with the Dutch literary system in Marlene van Niekerk's short story anthology, Die sneeuslaper; a connectedness that manifests specifually in the complex interaction of spatial ... -
Amyloid fibril systems reduce, stabilize and deliver bioavailable nanosized iron
(Nature, 2017)Iron-deficiency anaemia (IDA) is a major global public health problem1. A sustainable and cost-effective strategy to reduce IDA is iron fortification of foods2, but the most bioavailable fortificants cause adverse organoleptic ... -
An "enlightening course that empowers first years"?: a holistic assessment of the impact of a first-year academic literacy course
(Elsevier, 2017)This article reports on a study which assessed the impact of an academic literacy course on students' academic literacy levels. A combination of instruments suggested in an evaluation design by Fouché, Van Dyk and Butler ... -
An 11-digit identification system for individual Nile crocodiles using natural markings
(AOSIS, 2016)Research and conservation of wild crocodiles and husbandry of captive crocodiles requires the reliable identification of individuals. We present a method using the individual colour markings on the first 10 single-crest ... -
An action-learning model to assist Circuit Teams to support School Management Teams towards whole-school development
(Education Assoc South Africa (EASA), 2016)The Education District and Circuit Offices in South Africa are mandated by the Department of Basic Education to support schools under their jurisdiction. Reasons for the lack of such support to schools have been highlighted ... -
An Adamic incarnational Christological framework as a theological approach for African contextual ministry
(Stellenbosch University, 2016)Many African Christian thinkers and writers are responding to the foreignness of Christ in African Christianity by treating Christ under the traditional African ancestral category. However, it is our contention that the ...