Browsing Natural and Agricultural Sciences by Title
Now showing items 854-873 of 2708
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The effect of iron-spiked alkaline electrolyte on Ni-based electrocatalysts towards the oxygen evolution reaction
(North-West University (South Africa), 2022)An efficient means to store renewable energy is the electrolytic production of hydrogen. However, the anodic half-cell reaction in water electrolysis is sluggish and requires a good, cost-effective electrocatalyst, such ... -
The effect of kimberlite weathering on the behaviour of waste material at Cullinan diamond mine, South Africa
(North-West University, 2015)Water quality and space constraints have become major concerns regarding the No. 7 waste water dam at Petra Diamonds’ Cullinan mine. The unique location of the dam constrains further development, while unsustainable ... -
Effect of long-term physical activity intervention on the functional capacity of persons with intellectual disability : a Potchefstroom cohort
(North-West University, 2014)Physical inactivity, a modifiable risk factor for coronary heart disease (CHD) both in persons with intellectual disability (ID) and non-ID, is considered the fourth leading cause of death in the world. Long-term regular ... -
The effect of magnetic water on macadamia plants' physiology and phenological characteristics
(North-West University (South Africa), 2019)The biggest obstacle in the macadamia industry is both slow germination and growth rates. Several research studies have been conducted on magnetized water and its effect on plant growth. Magnetizing water can increase the ... -
The Effect of Metallothionein Overexpression on Inflammation Associated with Mitochondrial Complex I Deficiency
(North-West University (South Africa)North-West University, 2020)Mitochondria form an integral part of the immune system because complex I (CI) of the mitochondrial oxidative phosphorylation system has been identified as a key regulator of the inflammatory response. CI activity suppresses ... -
The effect of metallothionein overexpression on the transcription of selected genes involved in one-carbon metabolism and oxidative stress in NDUFS4-deficient mouse tissues
(North-West University (South Africa), 2020)Respiratory complex I (CI) defects are the most common mitochondrial disease, for which treatment is limited. Additionally, there is a lack of understanding of the impact of a CI defect upon the gene expression regulation ... -
Effect of Moringa oleifera extracts on physiological and meat quality responses of broiler chickens
(North-West University (South Africa), 2023)The purpose of this study was to determine the effect of administering Moringa oleifera extracts through drinking water on broiler chicken growth performance, nutrient digestibility, blood parameters, carcass yield, ... -
Effect of nanozinc oxide supplement on growth performance characteristics, physiological parameters and immune response of weaner Large White piglets
(North-West University (South Africa), 2022)This study was conducted to evaluate the effects of dietary Nano zinc oxide on growth performance, physiological parameters, and immune response of weaner piglets. Thirty (30) piglets with an average weight of 7.6 + 0.54 ... -
Effect of O3 fumigation on photosynthesis and growth of quinoa and its interaction with drought and elevated CO2
(North-West University, 2018)South Africa is a water scarce country frequently experiencing drought and has an extremely energy intensive economy contributing to the escalating levels of air pollutants which are threatening food production and ... -
Effect of oral contraception on biotransformation, oxidative stress and oxidative damage
(North-West University (South Africa), Potchefstroom Campus, 2015)The first hormonal oral contraceptive was released in 1960, giving women a more efficient way of controlling pregnancy and family planning. A combined oral contraceptive (COC) consists of an estrogen and a progestin compound. ... -
The effect of particle size distribution on redox zonation in gold mine tailings
(North-West University (South Africa), 2021)Sulphidic mine waste poses a threat to environmental health. This is due to its potential to generate acidic fluids that may contaminate ground- and surface water bodies. To be able to mitigate the release of these hazardous ... -
Effect of phosphorus and calcium supplementation on growth performance of communally grazed goats in a semi-arid area
(North-West University (South Africa), 2013)The purpose of this study was to assess whether there exists a mineral deficiency especially phosphorus, calcium and magnesium in communally grazed "village" goats. Phosphorus deficiency has been reported to occur in both ... -
Effect of plant density on growth and yields of six soybean (Glycine max L. Merril) cultivars grown at three localities in South Africa
(North-West University (South Africa), 2017)Agronomic field trials were conducted at Potchefstroom, Rustenburg and Bethlehem during the 2013/4 planting season to investigate the effect of plant density on growth and productivity of six commercial soybean cultivars. ... -
The effect of pre-ozonation on the physical characteristics of raw water and natural organic matter (NOM) in raw water from different South African water resources
(North-West University, 2006)Research in the use of ozone in water treatment conducted by many authors support the idea that the nature and characteristics of natural organic matter (NOM) present in raw water determines the efficiency of ozonation ... -
The effect of Ricinus communis on larval behaviour and midgut microbe communities of Spodoptera frugiperda (Lepidoptera : Noctuidae)
(North-West University (South Africa), 2019)The Fall Armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is an invasive pest species that spread throughout sub-Sahara Africa after its introduction into west Africa during 2016. It is a destructive ... -
Effect of rutin on TNF-α-induced insulin resistance in 3T3-L1 cells
(North-West University (South Africa), 2022)Obesity has become a growing epidemic globally and a burden to the health care system due to its association or contribution to the development of other chronic diseases. The excessive accumulation of fat in adipocytes or ... -
The effect of sex and HIV on the TB-induced altered sputum metabolome
(North-West University (South Africa), 2023)Various studies have identified TB-induced metabolome variations. However, in most of these studies, the unaccounted-for variation between individual patients is noteworthy. To investigate one potential cause of this ... -
Effect of soil forms on soil moisture and dryland cotton production
(North-West University (South Africa), 2022)Cotton (Gossypium hirsutum) production in South Africa relies on rainfed cultivation, and as such the availability of water is a key factor in the production of the crop. Cotton production in South Africa is declining ... -
Effect of species and harvesting site on phytochemicals and nutritive value of woody browse species found in semi-arid areas
(North-West University (South Africa), 2022)The main objective of this research study was designed to assess the effect of woody browse species and harvesting sites on nutritive value and bioactive compounds of woody browse species found in rangeland parts of ... -
The effect of sulforaphane on oxidative stress and biotransformation in HepaRG cells
(North-West University, 2013)Sulforaphane is an isothiocyanate found in high concentrations in cruciferous vegetables like broccoli. Sulforaphane has received much attention due to the evidence that it inhibits phase I carcinogen-bioactivating enzymes ...