Browsing Natural and Agricultural Sciences by Title
Now showing items 2332-2351 of 2738
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Safety evaluation of Lactobacillus reuteri PNW1 and Lactobacillus acidophilus PNW3 as probiotics and purification of their bacteriocins
(North-West University (South Africa), 2020)Background: Probiotics are live microorganisms that confer health benefit on the host when administered in adequate dose. Strains with probiotic potential are to be carefully selected based on their functionality, safety ... -
Sampling and evaluation of entomopathogenic fungi for control of Bathycoelia distincta (Hemiptera : Pentatomidae) in South Africa
(North-West University (South Africa), 2021)The two-spotted stink bug, Bathycoelia distincta (Distant) (Hemiptera: Pentatomidae), is the most abundant stink bug species in macadamia orchards in South Africa. This pest is associated with serve macadamia nut damage ... -
Savanna woody regeneration in response to different treatments of herbivory and fire
(North-West University (South Africa), Potchefstroom Campus, 2017)Woody regeneration is one of the fundamental processes responsible for structuring savanna systems. Herbivory and fire are two primary drivers of woody structure, and therefore also woody regeneration. Regeneration responses ... -
Sc-CO2 impregnering van houtpreserveermiddels
(North-West University, 2006)The feasibility of impregnating two types of wood (pine, poplar) with two different preservatives (creosote, CCA) by means of supercritical carbon dioxide (sc-CO2) as carrier was investigated in view of the actuality of ... -
Screening and characterization of non-typhoidal salmonella and other coliforms isolated form broiler products in the North West Province of South Africa
(2012)Non-typhoidal Salmonella (NTS) organisms are an important causes of food borne infections worldwide, with highest prevalence in the sub-Saharan Africa. Contaminated meat and poultry products, among many other factors, ... -
Screening Metagenome for novel N-Hydroxylating Monooxygenases (MMOs) using Bioinformatics and Biotechnological tools
(North-West University (South Africa), 2016)Microbial N-hydroxylating monooxygenases (NMOs) are useful industrial biocatalysts that perform the regioselective addition of a single oxygen atom to the terminal amino group of their target substrates (primary aliphatic ... -
Screening of EIA in the Free State Province : a comparative analysis between the 1997 and 2006 EIA Regulations
(North-West University, 2008)Between September 1997 and June 2006, the South African National and Provincial Government received more than 43 600 separate EIA applications, which is particularly high compared to international trends. This was, in ... -
Screening of Pt/Ni bimetallic electrocatalysts using DFT calculations
(North-West University (South Africa), 2021-06)Clean, renewable energy could be produced from the electrocatalytic splitting and recombination of water in electrolysers and fuel cells, called electrochemical devices. However, the development of these electrochemical ... -
Screening of the indigenous African vegetable, Corchorus olitorius, against root-knot nematodes
(North-West University (South Africa), 2023)Corchorus olitorius (Jute mallow) belongs to the genus of about 40-100 species of flowering plants in the family Malvaceae. Jute mallow is an important food for many families. It is famous for its sturdy natural fibre in ... -
Screening of the RYR1 gene in malignant hyperthermia probands from South Africa indicates towards a novel epigenetic eatiology in this population
(North-West University, 2007)Malignant hyperthermia (MH) is an autosomal dominant, potentially lethal pharmacogenetic disorder of skeletal muscle, which is elicited by exposure to volatile anaesthetics and depolarising muscle relaxants. Susceptible ... -
Search for best globular cluster candidates for H.E.S.S. and CTA
(North-West University (South Africa), Potchefstroom Campus, 2016)Globular clusters (GCs) are multi-wavelength objects. About 20 of these systems have been detected by the Fermi Large Area Telescope in the GeV band, whilst the ground- based Cherenkov telescope, the High Energy Stereoscopic ... -
A search for optical counterparts of the complex Vela X system
(North-West University (South Africa) , Potchefstroom Campus, 2012)The pulsar wind nebula (PWN) associated with the Vela pulsar, Vela X, is a complex system visible in radio, X-ray and y-ray wavelengths, but not in the optical wavelength. Knowledge of the brightness and structure of the ... -
Search for optically visible clusters associated with methanol masers
(North-West University (South Africa), 2002)We present a pilot study of the massive star formation region G 264.29+ 1.4 7. A photometric and a two-point correlation function study of this region has been carried out in order to find out whether or not there is ... -
Search for periodicity in emission of very high energy gamma-rays from the supernova remnant MSH 15-52
(North-West University, 2007)For the first time in the history of very high energy γ'-ray astronomy, diffuse emission of γ-rays from a pulsar wind nebula, was observed from the supernova remnant, MSH 15-52, by the H.E.S.S., in 2004. Along with MSH ... -
A search for pulsating B–type variable stars in the southern open clusters NGC 6204 and Hogg 22
(North-West University, 2013)The theory of stellar evolution and stellar structure relies on the observation of stars in di erent phases of their evolutionary cycle. The relation between observations and theory can be strengthened by obtaining ... -
A search for radio recombination lines in selected ultra-compact HII regions
(North-West University (South Africa), 2020)The role that high-mass stars play in galaxies is significant. They strongly affect their environment through their strong ultraviolet radiation, powerful winds, and supernova explosions. The physical processes that control ... -
Seasonal abundance and diversity of sorghum panicle-feeding Hemiptera in South Africa
(North-West University, 2006)During the past two decades, panicle-feeding Hemiptera have become pests of sorghum in West and Central Africa, and particularly in Mali, where this is a staple food crop. Of the more than 100 sorghum insect pests reported ... -
Seasonal and diurnal variations of surface ozone on the Mpumalanga Highveld
(North-West University, 2006)Surface ozone concentrations are used to monitor changes and trends observed in the sources of both ozone and precursors, and they are also important indicators of possible health and environmental impacts. Urban and rural ... -
Seasonal and lateral differences of the feathers of the Southern Masked-Weaver Ploceus velatus
(North-West University (South Africa), 2019)Are the left and right flight feathers of a bird the same? Are the structures and dimensions the same regardless of individual age, feather age, and sex? Structural flight feather asymmetry has not been explored beyond ... -
Seasonal migration and reproductive behaviour of the Common River Frog (Amietia quecketti)
(North-West University, 2013)The Common River Frog Amietia quecketti is a well-known and widely distributed species in southern Africa. Despite the fact that it is a common species and quite prevalent in urban areas little is known about its behaviour. ...
