Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 711-730 of 4818
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Comparative assessment of copper, iron, and zinc contents in selected Indian (Assam) and South African (Thohoyandou) Tea (Camellia sinensis L.) samples and their infusion: a quest for health risks to consumer
(Springer, 2017)The current study aims to assess the infusion pattern of three important micronutrients namely copper (Cu), iron (Fe), and zinc (Zn) contents from black tea samples produced in Assam (India) and Thohoyandou (South Africa). ... -
Comparative behavioural assessment of an established and a new tigerfish Hydrocynus vittatus population in two man–made lakes in the Limpopo River catchment, Southern Africa
(Taylor & Francis, 2012)With the continued establishment of man-made lakes within the natural distribution range of tigerfish in southern Africa, many artificial tigerfish populations now exist in the region. Very little of the behavioural ecology ... -
Comparative catalytic properties of Ni(OH)₂ and NiO nanoparticles towards the degradation of nitrite (NO₂¯) and nitric oxide (NO)
(ESG, 2014)Nitrite (NO₂¯) and nitric oxide (NO) have been identified as an environmentally hazardous analytes from discharged industrial effluents. Thus in this study, nickel oxide (NiO) and nickel hydroxide ... -
Comparative cellular responses in susceptible and resistant soybean cultivars infected by Meloidogyne incognita
(Brill Academic Publishers, 2013)Meloidogyne incognita, a predominant nematode parasite of soybean in South Africa, increasingly threatens production of the crop as it is expanding to maize-producing areas infected by this nematode. The parasitic ... -
Comparative diversity of arthropods on Bt Maize and Non-Bt Maize in two different cropping systems in South Africa
(Entomological Society of America, 2014)The biodiversity of an agroecosystem is not only important for its intrinsic value but also because it influences ecological functions that are vital for crop production in sustainable agricultural systems and the surrounding ... -
Comparative histomorphological assessment of the testes of two Clarias species from the Okavango Delta Panhandle, Botswana
(Elsevier, 2013)The testes of two Clarias species from the Okavango Delta Panhandle were histomorphologically assessed for differences in structure mainly because the testes varied externally in colour, with Clarias ngamensis having ... -
A comparative land Use-based analysis of noise pollution levels in selected urban centers of Nigeria
(MDPI, 2015)Growth in the commercialization, mobility and urbanization of human settlements across the globe has greatly exposed world urban population to potentially harmful noise levels. The situation is more disturbing in developing ... -
Comparative serum fatty acid profiles of captive and free-ranging cheetahs (Acinonyx jubatus) in Namibia
(PLOS, 2016)Cheetahs (Acinonyx jubatus) are highly specialised large felids, currently listed as vulnerable on the IUCN red data list. In captivity, they are known to suffer from a range of chronic non-infectious diseases. Although ... -
Comparative study of morphology, morphometrics, reproductive fitness on carrot discs and pathogenicity on musa genotypes of Radopholus Similis Philippine populations
(ISSAAS, 2019)Comparative studies were conducted on three Radopholus similis populations collected in Quezon, Laguna and Davao, Philippines from 2008 to 2010. For the first time, morphological and morphometrical characteristics of the ... -
Comparative study of the dissociative ionization of 1,1,1-trichloroethane using nanosecond and femtosecond laser pulses
(MDPI, 2010)Changes in the laser induced molecular dissociation of 1,1,1-trichloroethane (TCE) were studied using a range of intensities and standard laser wavelengths with nanosecond and femtosecond pulse durations. TCE contains ... -
A comparative study of the flora and soils of Great Duck and Little Duck Islands, Maine, USA
(New England Botanical Club, 2016)Strong environmental gradients and varied land-use practices have generated a mosaic of habitats harboring distinct plant communities on islands on the coast of Maine. Botanical studies of Maine's islands, however, are ... -
Comparative time-series analysis of MeV electron data by Ulysses and Pioneer 10/11 in the Jovian magnetosphere
(Copernicus Publications, 2013)The dynamics of the Jovian magnetosphere is dominated by the planet’s fast rotation with a period of 10 h.Within the magnetosphere, this periodicity can in particular be seen in the temporal variation of the spectral index ... -
Comparing algorithms to disaggregate complex soil polygons in contrasting environments
(Elsevier, 2019)In South Africa, the only soil resource available with full spatial coverage is the national resource inventory. Disaggregating this polygon-based inventory, is thus a logical step to create more detailed soil maps covering ... -
Comparing club level rugby coaches and players’ perceptions of coaching effectiveness
(AFAHPER-SD, 2014)The objective of this study was to compare players' and coaches' perceptions on coaching effectiveness. A total of 155 participants from the Puk Rugby institute (PRI) were available for this study (players, n = 142; coaches, ... -
Comparing club level rugby coaches and players’ perceptions of coaching effectiveness
(LAM Publications, 2014)The objective of this study was to compare players' and coaches' perceptions on coaching effectiveness. A total of 155 participants from the Puk Rugby institute (PRI) were available for this study (players, n = 142; coaches, ... -
Comparing grapheme-based and phoneme-based speech recognition for Afrikaans
(PRASA, 2012)This paper compares the recognition accuracy of a phoneme-based automatic speech recognition system with that of a grapheme-based system, using Afrikaans as case study. The first system is developed using a conventional ... -
Comparing legislative mechanisms for sea screening and decision-making: Austrian and Australian experiences
(Imperial College Press, 2010) -
Comparing mathematics knowledge of first-year students from three different school curricula
(ASSAf, 2019)Mathematics forms an integral part in the training of scientists and engineers. In recent history the South African school system has experienced several changes in school curricula. In 1994 the traditional knowledge based ... -
Comparing support vector machine and multinomial naive Bayes for named entity classification of South African languages
(PRASA, 2014)In this study, two classical machine learning algorithms, multinomial naive Bayes and support vector machines, are compared when applied to named entity recognition for two South African languages, Afrikaans and English. The ...