School of Mathematical and Natural Sciences: Recent submissions

Now showing items 1-20 of 243

The study of the effects of flavanoid derivatives as corrosion inhibitors for zinc and aluminium metals in sulphuric and hydrochlorine acids

Sithuba, Tshedza (2021-02)

In this study, the corrosion inhibition potentials of three flavonoid derivatives namely Naringenin (NRNG), Morin hydrate (MNHD) and 6-Hydroxyflavone (6-HFN) for zinc and aluminium metals was investigated using gravimetric ...
The rate of recolonization by native plant species after the eradication of invasive alien plant species in Limpopo Province, South Africa

Mbedzi, Melford (2020-11-25)

Invasive alien plant species found in riparian zones are known to compete with native plant species for water, space, sunlight, and other natural resources by lowering the structural diversity of native vegetation, thereby ...
Stochastic mean-reverting volatility forecasting with Augmented ARM-GARCH models

Antwi, Albert (2021-04-12)

The unconditional forecasting structures of non-time varying GARCH models impose monotonic mean reversion paths on medium to long-run volatility forecasts when breaks and changes in the unconditional volatility are ignored ...
Investigation of substituted thiazolidinediones as corrosion inhibitors on different metals in acidic media

Tshikhudo, Fulufhelo (2021-06-23)

This study is based on the synthesis of four Thiazolidinediones (TZD) derivatives which are Ethyl 2-(5-(4-methoxybenzylidene)-2,4-dioxothiazolidin-3-yl)acetate (EMDA), Ethyl 2-(5-(Benzo[d][1.3]dioxol-5ylmethylene)-2,4dio ...
Strain improvement and characterization of antibiotic producing microorganisms from soil

Khwathisi, Adivhaho (2021-06-23)

Since the discovery of Antibiotics in the 20th century, the idea of searching for antimicrobial compounds from natural sources came into existence. However natural products from microbial origin (especially soil ...
The Survival of Acacia decurrens , Acacia melanoxylon and Populus alba in Vaalwater, Waterberg Biosphere Reserve, Limpopo Province, South Africa

Matukana, V. (2021-06-23)

Invasive alien plants use survival strategies to outcompete native plants. Invasive alien plants occurring next to water bodies consume lot of water and are difficult to control and remove within their area of existence. ...
Investigation of the synthesis and characterization of Li2M(SO4)2 where M = Cu, Cr or V for lithium-ion batteries

Mahandana, Ndivhuwo Anita (2021-06-23)

Many researchers have put their efforts in developing various types of sulphate-based cathode materials for lithium-ion batteries such as Li2Co(SO4)2, Li2Mn(SO4)2, Li2Fe(SO4)2 and many others. This study focuses on the ...
Study of corrosion inhibition efficiency, mechanisms and application of chromones as corrosion inhibitors on alluminium, zinc and mild steel in acetic and sulphuric acids

Ratshikombo, Rinae (2021-06-23)

This study focuses on investigating three chromone derivatives namely; 3-cyanochromone (3CYC), 6-methylchromone-2-carboxylic acid (6MC2C), and 6methylchromone hydrate (6MCH) as corrosion inhibitor for three metals namely, ...
Preparation and characterization of co-doped lithium vanadate solid solutions

Ramukhithi, Livhuwani Knittor (2021-06-23)

In this study, a class of inorganic materials Li3VO4, Li3-xNaxVO4, Li3-xKxVO4, LiV1-yCryO4, and Li3-xKxV1-yCryVO4 (where x = 0.01, 0.05 & 0.1; y = 0.01, 0.05 & 0.1) were effectively synthesized via citrate sol – gel method. ...
Phytochemical studies of extracts of the Kirkia wilmsii tuber

Chigayo, Kayini (2021-06-23)

Ethnobotanical surveys have shown that K. wilmsii is used traditionally for the treatment of hypertension, diabetes, fever, hypertension, malaria, toothache and diabetes mellitus. Despite all this interesting information, ...
Design, synthesis and biological evaluation of novel tetra-substituted quinoline-3-carboxamides derivatives

Hlungwani, Isaac (2020-03-24)

Quinolines are well known naturally occurring heterocyclic compounds with nitrogen as a heteroatom. Quinolines are also one of the major classes of naturally occurring compounds and the interest in their chemistry is due ...
Characterization of diarrhoeagenic escherichia coli and human norovirus from daycare centres in the Vhembe Region of the Limpopo Province

Munzhedzi, Lutendo (2020-03)

BACKGROUND: Child daycare centers (DCCs) host a variety of pathogenic enteric microorganisms which may be found in various areas within the compound. Enteric pathogens are the most common cause of diarrhoea worldwide in ...
Density functional theory study of copper zinc tin (Cu2ZnSnS4) with Calcium and Barium

Mlotshwa, Thokozane Mxolisi (2020-08-24)

The sun is the most important source of renewable energy today. Producing energy from sunlight using cheap, abundant and non-toxic materials is considered a major challenge in the field of solar-electrical energy conversion. ...
Forecasting hourly solar irradiance in South Africa using machine learning models

Mutavhatsindi, Tendani (2020-08-12)

Solar irradiance forecasting is essential in renewable energy grids amongst others for back-up programming, operational planning, and short-term power purchases. This research study focuses on forecasting hourly solar ...
Determination of factors that influence digit preference: A Case study of South African Census 2011 Age-Sex date

Netshiozwi, Masala (2020-01)

The age distribution of a population is one of the most important demographic factors that plays a major role in describing and making projections about the population. Age distribution determine life expectancy, fertility ...
The effects of experimental drought, grazing, and seasonality on ant and spider diversity in an arid region of South Africa

Ratshibvumo, Tshikambu (2020-04)

Coupled with irreversible shifts, climate-driven disturbance of ecosystems will probably be the largest impact of climate change on humans. With higher rainfall variability and more intense events, separated by extended ...
Does observational methods affect the observed impacts of exotic plants on flower visitors in around Macadamia orchards

Ramotjiki, Mancha Lorraine (2020-02-20)

Pollination of flowering plants is mostly facilitated by insects. However, there is a global decline in the pollination services caused by invasive alien plants (IAPs), excessive use of pesticides, habitat loss, and ...
Hierarchical forecasting of electricity demand in South Africa

Netshiomvani, Rofhiwa (2020-08-11)

The study focuses on the application of hierarchical time series in forecasting electricity demand using South African data. The methods used are top-down, bottom-up and optimal combination. The top-down method is based ...
Biophysical characterization of KO513, a protein expressed in human invasive glioblastoma

Nemukondeni, Ndivhuwo (2020-06-26)

Glioblastoma multiforme (GBM) is the deadliest brain tumour. GBM is associated with poor prognosis, with its patients having a very short median survival and poor response to chemotherapy. GBM is a World Health Organization ...
Identification of small molecule inhibitors targeting Plasmodium falciparum Hsp70-Hop pathway

Muthelo, Tshifhiwa (2020-06-26)

Malaria is caused by protozoan parasites of the Plasmodium genus. An estimated 405 000 million deaths due to malaria were reported in 2018. Plasmodium falciparum (P. falciparum) accounts for the deadliest form of the disease ...

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