Browsing Natural and Agricultural Sciences by Title
Now showing items 1600-1619 of 2738
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Laboratory scale testing and modelling of sub-surface wetlands to reduce sulphate
(North-West University, 2018)Water quality impacts related to coal mining are mostly caused by exposing sulphide bearing minerals, such as pyrite, to oxygen and water. The oxidation of sulphide bearing minerals produces acid, metals, trace metals, and ... -
Laboratory-scale evaluation of different aspects related to Ceratium hirundinella removal during simulation of a conventional water treatment plant which includes sedimentation
(North-West University, 2015)The freshwater dinoflagellate species, Ceratium hirundinella (C. hirundinella) possesses unique characteristics, such as a thecal-plate cell covering of cellulose, spines and flagella. Unlike most other algae and cyanobacteria, ... -
Land Capability Evaluation Using Remote Sensing and GIS in Communal Areas of North West Province, South Africa
(North-West University (South Africa), 2017)This study sought to develop a framework as a tool for land capability evaluation using remote sensing, GIS and geostatistical techniques for communal areas, where the results can be duplicated in other geographical areas ... -
Land use and land cover change as a consequence of the South African land reform programme : a remote sensing approach
(2012)Over 18 years after the democratic government took power in South Africa, environmental changes relevant to the land reform policies are taking place because of unintended consequences of land reform policy. This study ... -
Land use and urban efficiency : towards more resilient cities
(North-West University (South Africa), 2016)This study aimed to provide a practical set of tools that may lead to improved urban resilience and efficiency. The goal of this set of tools is to improve and simplify the implementation of urban resilience and efficiency, ... -
Land use/cover changes and vulnerability to flooding in the harts catchment, South Africa
(2012)The purpose of this study was to determine the hydrological impacts of land use/land cover (LULC) change in the Harts River catchment from 1990 to 2010 using an integration of remote sensing, Geographic Information System ... -
Landscape function in bush thickened and -controlled areas of the semi-arid savanna in the Molopo region, South Africa
(North-West University, 2017)Bush thickening (bush encroachment) and the effects thereof on the environment has been a very well debated topic over the past few decades which led to the formation of two valid but rather opposite opinions. Pasture ... -
Landscape functionality and plant diversity of grassland fragments along an urban–rural gradient in the Tlokwe Municipal area, South Africa
(North-West University, 2013)Urbanisation is an ever-growing global phenomenon which creates altered environments characterised by increased human habitation, exotic species, impermeable surfaces, artificial structures, landscape fragmentation, ... -
Language Reasoning and Verbal Reasoning Difficulties of Students in the four year BSc-Course at NWU
(North-West University (South Africa), 2016)Students who are learning science need to use specialized conceptual language in reading, reasoning and problem solving. This study explored the language used in chemistry including non-technical words (i.e., understanding ... -
LC-ESI-MS/MS quantification of hair cortisol, cortisone and DHEA in combined oral contraceptive users
(North-West University (South Africa), 2024-06)Combined oral contraceptives (COCs) are used chronically by many women worldwide and in South Africa. Because many COC adverse effects coincide with symptoms of stress-related illnesses, including insulin resistance and ... -
Leaching kinetics of synthetic heazlewoodite
(North-West University, 2004)The sources of base metals are mainly in the form of oxides or sulphides, of which the sulphides are predominantly present in South Africa. These metals are intergrown platinum group and base metals in the form of alloys ... -
Learning from biodiversity offsets implementation within eThekwini Municipality (Durban), South Africa
(North-West University (South Africa), 2021)The use of biodiversity offsets has expanded internationally over the past four decades. However, amidst the wealth of offsets practice there seems to be limited follow-up empirical research to learn from practice. Therefore, ... -
Lecturers’ perspectives of using problem solving guidelines during the teaching of computer programming
(North-West University, 2018)The purpose of this study was to discover what the views and experiences of the lecturers are when presenting programming, using problem-solving guidelines. The study was prompted by the "digital natives" students who are ... -
Legal compliance challenges for the management of waste from the explosives sector : a South African case study
(North-West University (South Africa), 2021)Explosives waste generation is a universal problem because of its complex and hazardous nature. Despite the well-known negative impacts of explosive waste on the environment, there has been very little research on the ... -
The legislative framework for alternative use of Polyethylene Terephthalate (PET) in South Africa : opportunities and challenges
(North-West University (South Africa), 2022)Polyethylene terephthalate (PET) is part of the polyester family and has widespread use as a packaging material, especially for bottling gaseous drinks and mineral waters. The exceptional features of PET, namely flexibility, ... -
Legumes in maize straws : nutritive value, palatability indices and silage fermentation parameters
(North-West University (South Africa), 2022)Legume leaves from lablab and cowpea can be incorporated in ruminants’ diets due to their high feeding value. They are rich in crude protein (CP), vitamins and minerals when compared to grasses that usually deteriorate ... -
The level of mycotic and mycotoxigenic Fusaria in traditional morogo and the agro-environment of Dikgale Demographic Surveillance Site (DDSS)
(North-West University, 2007)Ubiquitous in agro-environments, Fusarium species infect and damage economically important crops and contaminate food commodities with harmful secondary metabolites called mycotoxins. In addition, human infection by ... -
Liberation of chromium from ferrochrome waste materials utilising aqueous ozonation and the advanced oxidation process
(North-West University, 2014)During ferrochrome (FeCr) production, three types of generic chromium (Cr) containing wastes are generated, i.e. slag, bag filter dust (BFD) and venturi sludge. The loss of these Cr units contributes significantly to the ... -
The licensing responsibilities for the pilot fuel plant (PFP) in ensuring safety as required by the National Nuclear Regulator (NNR) in order to obtain an operating licence
(North-West University (South Africa), 2006)Any industrial activity yields benefits and incurs risks, and the nuclear industry is not different. The risks may be borne by the site personnel, by people living near the installation and by the whole of society. The ... -
Lie group analysis of an internal flow and heat transfer inside a combustion chamber of a solid rocket motor
(North-West University (South Africa), 2020)This research project presents semi-analytical solutions for flow and heat transfer during solid rocket motor operation. Proficient modelling process is followed to construct a mathematical representation based on conservation ...
