Browsing Faculty of Natural Sciences by Title
Now showing items 2533-2552 of 2571
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Water quality prediction based on multi-task learning
(MDPI, 2022)Water pollution seriously endangers people’s lives and restricts the sustainable development of the economy. Water quality prediction is essential for early warning and prevention of water pollution. However, the nonlinear ... -
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, ... -
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. ... -
A weighted bootstrap approach to logistic regression modelling in identifying risk behaviours associated with sexual activity
(Taylor and Francis Group, 2019)The latest population estimates released by Statistics South Africa indicate that 25.03% of alldeaths in 2017 in South Africa were AIDS-related. Along with these results, it is also reportedthat 7.06% of the population ... -
Werner Eissner (1930–2022): a pioneer in computational atomic physics
(Atoms, 2023)Werner Eissner (Figure 1), a pioneer in computational atomic physics, was born on 16 October 1930 in the city of Görlitz, Germany, to Bernhard and Frieda (née Eckert) Eissner. He lost both parents early in life, his father ... -
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 ... -
Wetlands in drylands: Diverse perspectives for dynamic landscapes
(Springer, 2022)The United Nations Environment Programme (UNEP 1997) classifes global drylands according to an Aridity Index (AI), defned as the ratio between mean annual precipitation (MAP) and potential evapotranspiration (PET). ... -
What are psychiatric disorders of people who are incarcerated in France
(Elsevier, 2022)The presence of detainees suffering from psychiatric disorders has been observed since the birth of the modern prison system, and the numbers have fluctuated since then, depending on the evolution of psychiatric facilities ... -
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 ... -
Whole-genome sequencing of African swine fever virus from wild boars in the Kaliningrad region reveals unique and distinguishing genomic mutations
(Frontiers Media, 2023)Since the first report of outbreaks of African swine fever (ASF) in Georgia in 2007, the disease has expanded into Europe, Russia, and Asia, spreading rapidly via contact with infected animals including domestic pigs and ... -
Whole-genome sequencing of African swine fever virus from wild boars in the Kaliningrad region reveals unique and distinguishing genomic mutations
(Frontiers Media, 2023)Since the first report of outbreaks of African swine fever (ASF) in Georgia in 2007, the disease has expanded into Europe, Russia, and Asia, spreading rapidly via contact with infected animals including domestic pigs and ... -
Why do we need to care about transboundary aquifers and how do we solve their issues?
(SpringerLink, 2023)As the reliance on transboundary groundwater is increasing globally, it is important to understand and address the specifc issues raised by the assessment and management of transboundary aquifers (TBAs). Building on 20 ... -
Wide-angle effects in multi-tracer power spectra with Doppler corrections
(IOP Publishing, 2023). We examine the computation of wide-angle corrections to the galaxy power spectrum including redshift-space distortions and relativistic Doppler corrections, and also including multiple tracers with differing clustering, ... -
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 ...