Browsing Faculty of Natural Sciences by Title
Now showing items 1851-1870 of 1882
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Walking and the social life of solar charging in rural Africa
(Association for Computing Machinery, 2013)We consider practices that sustain social and physical environments beyond those dominating sustainable HCI discourse. We describe links between walking, sociality, and using resources in a case study of community-based, ... -
WALLABY – an SKA Pathfinder H I survey
(Springer Nature, 2020)The Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) is a next-generation survey of neutral hydrogen (H I) in the Local Universe. It uses the widefield, high-resolution capability of the Australian Square ... -
Waste minimization protocols for the process of synthesizing zeolites from South African coal fly ash
(MDPI, 2013)Production of a high value zeolite from fly ash has been shown to be an avenue for the utilization of South African fly ash which presently constitutes a huge disposal problem. The synthesis of zeolites Na-P1 and analcime ... -
A water balance approach to the sustainable management of groundwater in South Africa
(Water Research Commission, 2000)The water balance approach, based on the principles of conservation of mass, is applied to the issue of sustainable groundwater management in South Africa, incorporating the ethos of the National Water Act of 1998, ... -
Water distribution network leak detection management
(Curran Associates Inc., 2020)Water is becoming an increasingly scarce commodity and must be effectively managed to ensure minimal losses. Water is a basic human resource and during both a physical and a cyber war, limiting, or interrupting the supply ... -
Water futures and solutions: Options to enhance water security in sub-Saharan Africa
(Springer, Cham, 2018)Water security is one of the greatest health, ecological, environmental, and human rights challenges of our time. Africa sits at the epicenter of this quandary, with the need to build resilience into already over allocated ... -
Water materialities and citizen engagement: Testing the implications of water access and quality for community engagement in Ghana and South Africa
(Taylor & Francis, 2017)We analyze the relationship between perceptions of domestic water access, and quality, in relation community engagement. While others have suggested linkages between material conditions of water access and engagement ... -
Water use dynamics of young and mature apple trees planted in South African orchards: a case study of the Golden Delicious and Cripps’ Pink cultivars
(Copernicus Publications, 2018)Apple orchards have previously been bearing 60–80 t ha-1 at most. However in recent years yield has increased to more than 100 t ha-1. There is need to understand the water requirements of the high yielding orchards, ... -
Water use of selected cover crop species commonly grown in South African fruit orchards and their response to drought stress
(Elsevier, 2021)Cover crops are widely planted in orchards for a variety of reasons. These include suppressing soil erosion, nutrient cycling, phytosanitary purposes, general orchard aesthetics etc. However, there is need to balance these ... -
Waternet: A network for monitoring and assessing water quality for drinking and irrigation purposes
(IEEE, 2022)Water is a fundamental requirement for human, animal, and plant survival. Despite its importance, quality water is not always fit for drinking, domestic and/or industrial use. Numerous factors such as industrialization, ... -
A Web-Based Global Educational Model for Training in Semen Analysis during the COVID-19 Pandemic
(The world journal of men's health, 2021)Infertility affects between 2.5% and 12% of couples worldwide, with male factor infertility solely accounting for 20% to 30% and contributing to 50% of the overall infertility cases [1]. In the United States alone, infertility ... -
A web-based global educational model for training in semen analysis during the Covid-19 pandemic
(Korean Society for Sexual Medicine and Andrology, 2021)In response to the COVID-19 pandemic, the American Center for Reproductive Medicine (ACRM) transitioned its annual training in assisted reproductive technology (ART) from a hands-on, laboratory-based training course to a ... -
Web-based telephony bridges for the deaf
(Telkom, 2001)A Teldem provides text-based telephony services to the deaf. Despite an array of text-based communications mechanisms on the web, the Teldem is the only means of synchronous telecommunication available to a deaf person. ... -
West Coast plants for a waterwise garden
(Botanical Society of South Africa, 2009)The new gardening mantra is 'grow indigenous'. Besides their aesthetic value, most indigenous plants are less costly to maintain, largely because they have long adapted to the local climate and thus to the local rainfall. ... -
The westward journey of alfalfa leaf curl virus
(MDPI, 2018)Alfalfa leaf curl virus (ALCV), which causes severe disease symptoms in alfalfa (Medicago sativa L.) and is transmitted by the widespread aphid species, Aphis craccivora Koch, has been found throughout the Mediterranean ... -
What can be deduced from open cluster metallicity measurements?
(Oxford University Press, 2007)The dependence of [Fe/H] on galactocentric distance, distance from the galactic mid-plane and age is studied. Both ordinary least-squares and non-parametric regression in the form of a ‘generalized additive model’ are ... -
What if students could be transformational resources for pharmacy practice?
(Medpharm Publications, 2017)The pharmacists’ role in the healthcare system is expanding internationally beyond the traditional roles of compounding and medicine supply management, to providing patientcentred care and updating health care workers ... -
Whole-genome sequencing for an enhanced understanding of genetic variation among South Africans
(Nature Publishing Group, 2017)The Southern African Human Genome Programme is a national initiative that aspires to unlock the unique genetic character of southern African populations for a better understanding of human genetic diversity. In this pilot ... -
A wide-area GMRT 610-MHz survey of ELAIS N1 field
(Oxford University Press, 2020)In this paper, we present a wide-area 610-MHz survey of the ELAIS N1 field with the GMRT, covering an area of 12.8 deg2 at a resolution of 6 arcsec and with an rms noise of ∼40 μJy beam−1. This is equivalent to ∼20 μJy ... -
Wildlife- friendly livestock management promotes mammalian biodiversity recovery on a semi-arid Karoo farm in South Africa
(Frontiers Media, 2021)Agriculture is an essential production system used to feed the growing human population, but at the same time has become a major driver of biodiversity loss and environmental degradation. Employing production methods that ...
