Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1781-1800 of 4818
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Filament identification and dominance of Eikelboom Type 0092 in activated sludge from wastewater treatment facilities in Cape Town, South Africa
(WRC (Water Research Commission), 2014)Routine characterisation of activated sludge and identification of the filamentous population by microscopic and/or other non-culture dependent techniques can assist in diagnosing the aetiology of poor performance of ... -
Fine PM emission factors from residential burning of solid fuels using traditional cast-iron coal stoves
(NACA, 2018)Residential burning of solid fuels is a major source of fine particulate matter (PM2.5), which degrades indoor and ambient air quality in low-income settlements. The adverse impact of fine particulate emissions on the ... -
Finite 2-groups in which distinct nonlinear irreducible characters have distinct kernels
(National Inquiry Services Centre (NISC), 2016)In this paper, we study finite 2-groups in which distinct nonlinear irreducible characters have distinct kernels. We prove several results concerning these groups and completely classify 2-groups with at most five nonlinear ... -
The finite section method for infinite Vandermonde matrices
(Elsevier, 2012)The finite section method for infinite Vandermonde matrices is the focus of this paper. In particular, it is shown that for a large class of infinite Vandermonde matrices the finite section method converges in l1l1 sense ... -
A first assessment of glyphosate, 2,4-D and Cry proteins in surface water of South Africa
(ASSAf, 2019)Agriculture plays a vital role in the South African economy, as well as in the production of maize for food. Genetically modified maize is transformed to encode for crystalline (Cry) proteins found in Bacillus thuringiensis ... -
The first case of riboflavin transporter deficiency in sub-Saharan Africa
(Elsevier, 2018)This report describes the first case of a child with genetically confirmed Brown-Vialetto-van Laere syndrome in sub-Saharan Africa. This is an extremely rare clinical condition that presents with an auditory neuropathy, ... -
First detection of the Crab Nebula at TeV energies with a Cherenkov telescope in a dual-mirror Schwarzschild-Couder configuration: the ASTRI-Horn telescope
(EDP Sciences, 2020)We report on the first detection of very high-energy gamma-ray emission from the Crab Nebula by a Cherenkov telescope in dual-mirror Schwarzschild-Couder (SC) configuration. This result has been achieved by means of the ... -
First detection of VHE y-rays from SN 1006 by HESS
(EDP Sciences, 2010)Aims. Recent theoretical predictions of the lowest very high energy (VHE) luminosity of SN 1006 are only a factor 5 below the previously published HESS upper limit, thus motivating further in-depth observations of this ... -
First discovery of Plasmobatidae (Acari, Oribatida) in Gabon, redefinition and new species of the genus Solenozetes Grandjean, 1932
(Publications Scientifiques du Muséum national d’Histoire naturelle, Paris, 2013)The family Plasmobatidae is herewith reported for the first time from Gabon and Solenozetes makokouensis n. sp. is described. The holotype was collected from litter in dense evergreen humid forest, Makokou, Province ... -
The first Fermi Large Area Telescope catalog of gamma-ray pulsars
(IOP Publishing, 2010)The dramatic increase in the number of known gamma-ray pulsars since the launch of the Fermi Gamma-ray Space Telescope (formerly GLAST) offers the first opportunity to study a sizable population of these high-energy objects. ... -
First ground-based measurement of sub-20 GeV to 100GeV y-Rays from the Vela pulsar with H.E.S.S. II
(EDP Sciences, 2018)Aims. We report on the measurement and investigation of pulsed high-energy γ-ray emission from the Vela pulsar, PSR B0833−45, based on observations with the largest telescope of H.E.S.S., CT5, in monoscopic mode, and on ... -
First Hemolivia from southern Africa: reassigning chelonian Haemogregarina parvula Dias, 1953 (Adeleorina: Haemogregarinidae) to Hemolivia (Adeleorina: Karyolysidae)
(Taylor & Francis, 2015)To date, only a single species of Hemolivia, Hemolivia mauritanica (Sergent & Sergent, 1904), has been described from African terrestrial tortoises. Although various haemogregarines have been described from southern ... -
First limits on the very-high energy gamma-ray afterglow emission of a fast radio burst.
(EDP Sciences, 2017)Aims. Following the detection of the fast radio burst FRB150418 by the SUPERB project at the Parkes radio telescope, we aim to search for very-high energy gamma-ray afterglow emission. Methods. Follow-up observations in ... -
First monogenean flatworm from a microhylid frog host: Kankana, a new polystome genus from Madagascar
(Elsevier, 2011)Kankana manampoka n. gen., n. sp. (Monogenea, Polystomatidae), is described from the urinary bladder of the narrow-mouthed frog Platypelis pollicaris. This is the first record of a polystome from the Microhylidae and the ... -
First NuSTAR observations of Mrk 501 within a radio to TeV multi-instrument campaign
(American Astronomical Society, 2015)We report on simultaneous broadband observations of the TeV-emitting blazar Markarian 501 between 2013 April 1 and August 10, including the first detailed characterization of the synchrotron peak with Swift and NuSTAR. During ... -
First observation of African tigerfish Hydrocynus vittatus predating on barn swallows Hirundo rustica in flight
(Wiley, 2014)A population of African tigerfish Hydrocynus vittatus from the Schroda Dam, actively prey on barn swallows Hirundo rustica in flight. This behaviour was discovered during a radio telemetry study and documented using a ... -
First record of a cyanobacterium Petalonema alatum (Borzì ex Bornet & Flahault) Correns (Cyanobacteria, Scytonemataceae) in Africa
(Pensoft, 2018)Petalonema alatum (Borzì ex Bornet & Flahault) Correns is a nitrogen fixing, subaerial cyanobacterium characterized by a blue-green trichome surrounded by a very broad, lamellated mucous sheath. It typically grows on ... -
First record of a spiral form of Aulacoseira, A. ambigua f. japonica (F.Meister) Tuji & D.M.Williams, in South African fresh waters
(Taylor & Francis, 2016)Water quality and algal populations in the Vaal River Barrage Reservoir have been monitored extensively for many decades, because of its importance as a water source for the most densely populated area in South Africa. ... -
First record of an intraleucocytic haemogregarine (Adeleorina: Haemogregarinidae) from South African tortoises of the species Stigmochelys pardalis (Cryptodira: Testudinidae)
(Taylor & Francis, 2014)To date, four intraerythrocytic apicomplexans, namely the haemogregarines Haemogregarina fitzsimonsi and Haemogregarina parvula, and the haemoproteids Haemoproteus testudinalis and Haemoproteus natalensis, have been described ... -
The first record of Gnathostenetroididea Kussakin, 1967 from Australian waters with description of four new species of Gnathostenetroides Amar, 1957 (Crustacea: Isopoda: Asellota) from the Great Barrier Reef
(Magnolia Press, 2019)The asellote family Gnathostenetroididae Kussakin, 1967 is reported for the first time from Australian waters. Four new species of Gnathostenetroides Amar, 1957 from the Great Barrier Reef are described. The genus Maresiella ...