Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1235-1254 of 4824
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A distributed approach to speech resource collection
(Pattern recognition association of South Africa (PRASA), 2013)We describe the integration of several tools to enable the end-to-end development of an Automatic Speech Recognition system in a typical under-resourced language. Google App Engine is employed as the core environment for ... -
Distributed state estimation with communication of observations
(ELSEVIER, 2013)The paper discusses communication of state information in a distributed system. In particular, the following problem is considered: if a linear combination of the output of one subsystem can be communicated, which linear ... -
Distribution and habitats of Burnupia trapezoidea (Boettger, 1910) (Gastropoda: Ancylidae) in South Africa
(WRC, 2017)This paper deals with the geographical distribution and habitat preferences of B. trapezoidea, the third most widespread species of the 14 species of Burnupia currently on record in the database of the National Freshwater ... -
Distribution and health risk assessment of organochlorine pesticides (OCPs) residue in edible cattle tissues from northeastern part of Egypt: high accumulation level of OCPs in tongue
(Elsevier, 2016)Food consumption is an important route of human exposure to organochlorine pesticides (OCPs). In order to assess the potential human health risks associated with OCPs, edible cattle tissues (liver, kidney and tongue) were ... -
The distribution and host-association of a haemoparasite of damselfishes (Pomacentridae) from the eastern Caribbean based on a combination of morphology and 18S rDNA sequences
(Elsevier, 2018)Coral reefs harbor the greatest biodiversity per unit area of any ecosystem on earth. While parasites constitute the majority of this biodiversity, they remain poorly studied due to the cryptic nature of many parasites and ... -
Distribution of Galepsus spp. in Southern Africa and life history of Galepsus lenticularis (Mantodea: Tarachodidae)
(MDPI, 2020)Galepsus Stäl is a genus within the Mantodea and has hardly been studied in Africa. The distribution of the Galepsus genus in Southern Africa was established, based on insect collection records, and the biology of Galepsus ... -
Distribution of mite species (Acari) on persimmon trees in Turkey (Ordu), with one newly recorded mite species and one re-described species
(Taylor & Francis, 2017)Persimmon is a deciduous and perennial tree of the Ebenaceae family. Diospyros kaki Thunb. and Diospyros lotus L. are the most common persimmon species in Turkey and cultivated especially in the northeastern parts of the ... -
Distribution of perfluorinated compounds (PFASs) in the aquatic environment of the industrially polluted Vaal River, South Africa
(Elsevier, 2018)Perfluorinated alkyl substances (PFASs) are highly persistent chemicals, which have a bioaccumulative potential and can be found in wildlife around the world. Although multiple studies have been performed on PFASs pollution ... -
Distribution of the pill clam Pisidium langleyanum melvill & Ponsonby, 1891 (Bivalvia: Sphaeriidae) in South Africa
(South Africa Water Research Commission, 2008)This article focuses on the geographical distribution and habitats of the pill clam, Pisidium langleyanum as reflected by 632 samples on record in the database of the National Freshwater Snail Collection (NFSC). The 177 ... -
Distribution of wild relatives of Saccharum species hybrids in sugarcane cultivation regions of South Africa
(Elsevier, 2017)Hybridisation may occur between crop plants and wild relatives if certain barriers to gene flow are crossed. Gene flow from crop species to indigenous wild relatives can threaten biodiversity. In assessing the risk of ... -
Distribution profiles of selected organic pollutants in soils and sediments of industrial, residential and agricultural areas of South Africa
(RSC Publication, 2009)Currently very little data exists on the presence of persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) in the South African environment. To address this data gap a preliminary study of a ... -
Distribution, morphology, seasonal dynamics, and molecular characterization of Tylenchulus semipenetrans from citrus orchards in southern Iran
(De Gruyter, 2015)Tylenchulus semipenetrans was identified morphologically from root samples collected from citrus orchards in Shahdad region, southeastern Iran. The number of juveniles and females averaged 648/100 g soil and 65/10 g root, ... -
Distributions of the subspecies of Lesser Black-backed Gulls Larus fuscus in sub-Saharan Africa
(Taylor & Francis, 2011)The wintering area of the nominate subspecies of Lesser Black-backed Gull Larus fuscus fuscus is from Ethiopia across Uganda and the Congo basin to the Atlantic, while L. f. intermedius and L. f. graellsii winter in ... -
Ditylenchus sarvarae sp. n. (Tylenchina: Anguinidae) from Iran
(Magnolia Press, 2018)During a survey of soil nematodes in Iran, a new species of Ditylenchus Filipjev, 1936 was discovered. Ditylenchus sarvarae sp. n. is characterised by its body length (1.0–1.4 mm), lateral field with seven incisures and ... -
Diurnal activity patterns of the temporary fish ectoparasite, Gnathia africana Barnard, 1914 (Isopoda, Gnathiidae), from the southern coast of South Africa
(Cambridge Univ Press, 2018)Gnathiid isopods are one of the most common fish ectoparasites, and are found in both temperate and tropical oceans. On coral reefs, gnathiids are most active at dusk and dawn, and contribute significantly to trophic ... -
Diurnal cycle of convection during the CAIPEEX 2011 experiment
(Springer, 2016)The diurnal cycle of convective storm events is investigated in the study with the help of C-band radar reflectivity data during the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX 2011) in ... -
The diverse origins of circulating cell‐free DNA in the human body: a critical re‐evaluation of the literature
(Wiley, 2018)Since the detection of cell‐free DNA (cfDNA) in human plasma in 1948, it has been investigated as a non‐invasive screening tool for many diseases, especially solid tumours and foetal genetic abnormalities. However, to date ...