Archives

  • Vol. 120 No. 1/2 (2024)

    Portulacaria afra bush in Worcester, South Africa. Portulacaria afra – commonly known as spekboom or elephant bush – is a medicinally important plant species endemic to South Africa. Basson and colleagues investigated the effect that rising atmospheric CO2 levels may have on the medicinal properties of this plant.

    Photo by Dean Erasmus on Unsplash

    Full online issue available here.

  • Vol. 119 No. 11/12 (2023)

    A Knysna dwarf chameleon (Bradypodion damaranum). In their study, Adair and colleagues explored the efficacy of a minimally disruptive DNA sampling technique, buccal swabbing, as an alternative to tissue sampling via tail clipping, in dwarf chameleons (Bradypodion spp.).

    Image: ©dianastromberg on iNaturalist (CC-BY-NC)

    Full online issue available here.

  • Vol. 119 No. 9/10 (2023)

    South African children playing. Physical activity has positive effects on cardiovascular health that can be observed already in childhood. In their Research Article, Arnaiz and colleagues compare two methods to assess physical activity levels in children in Gqeberha, South Africa. And in their Commentary, Breet and colleagues reveal that South African children are wearing school shoes that do not properly fit as they are not designed to fit the unique foot shape of habitually barefoot South African children.

    Full online issue available here.

  • Cover image for SAJS vol119 n7-8

    Vol. 119 No. 7/8 (2023)

    About the cover:

    The Republic of Mauritius is a maritime country with a vast potential for marine organisms that are not yet fully utilised as sources of bioactive substances. The exclusive economic zone of Mauritius harbours a diverse assemblage of Neopetrosia species and thus opportunity for the discovery of new bioactive agents. In their article, Beesoo et al. report on the promising anticancer activity of extracts derived from the marine sponge Neopetrosia exigua, collected from Mauritian waters.

    Full online issue available here.

  • Vol. 119 No. 5/6 (2023)

    This special issue on ‘Big data and AI in health sciences research in sub-Saharan Africa’ introduces a broad range of scientific, ethical, legal and social concerns in the realm of data-intensive research and artificial intelligence (AI) in sub-Saharan Africa. Technology brings enormous benefit, but comes at a price, and with potential harms. Articles in this special issue explore the benefits of data science; the importance of data management, quality and integrity; challenges of engaging communities and stakeholders in data science; ethical and legal issues raised by the gathering and use of mobile phone data; the direction of AI governance in the sub-Saharan African context; and voices from scientists and research ethics committee members.

    Full online issue available here.

  • Vol. 119 No. 3/4 (2023)

    About the cover:

    What’s in a face? Our faces are central to our identity and to how we perceive our environment, communicate, and express ourselves. A special section on Face Science in this issue presents cutting-edge research and new perspectives on the study of faces within South Africa.

    Full online issue available here.

  • Vol. 119 No. 1/2 (2023)

    About the cover:

    “… a revolution that is fundamentally changing the way we live, work, and relate to one another. In its scale, scope and complexity… is unlike anything humankind has experienced before.” These are the words of Klaus Schwab speaking about the Fourth Industrial Revolution (4IR). In his article, Moll states that the ‘technologies of the 4IR’ are merely evolutions of the 3IR and not groundbreaking inventions of contemporary times. In their responses to Moll’s article, Marwala and Ntlatlapa argue for the existence of the Fourth Industrial Revolution.

    Full online issue available here.

  • Vol. 118 No. 11/12 (2022)

    About the cover:

    Ocean sustainable development, sustainability, and inclusivity are features of the Operation Phakisa ‘Unlocking the Ocean Economy’ Programme which strongly align it to a blue economy model. How marine geophysics provides new insights into a Marine Protected Area and metabarcoding of zooplankton to indicate marine ecosystem status are the subjects of other articles on ocean health in this issue which focuses on climate change, and planetary and human health. 

    Full online issue available here.

     

  • Vol. 118 Special issue: Radical Reason (2022)

    About the cover:

    Radical Reason

    The aim of this special issue is to show how African thought has and could contribute to the development of new logics and new forms of reason and to reflect on the full complexity of the lived experiences and conditions of being in the world now – on the horizon of the emergence of a not yet fully determinable world when radical thought, science, ethics, institutional arrangements, and other shared systems of valuation and understanding, are required to give depth and meaning to the full articulation of the questions that we need to be asking now to engender the arrival of a just and equal world to come. No one discipline or system of thought can answer the questions the world is facing today. This is the time for ‘radical reason’.

    This special issue emanates from the contributions of the HSRC Radical Reason ‘Conversations with Global Thinkers’ series that took place at the 2020 Science Forum South Africa. The publication of this special issue was sponsored by the Human Sciences Research Council (HSRC) of South Africa.

    Editor's note

    Full online issue available here.

  • Vol. 118 No. 9/10 (2022)

    About the cover:

    Alcohol is a major contributing factor to the burden of road traffic crashes and injuries in South Africa. Sukhai and colleagues review global research and experiences with the adoption of zero-tolerance approaches to drink-driving, along with key South African contextual considerations, to provide recommendations for advancing zero-tolerance drink-driving legislation in South Africa.

    Full online issue available here.

  • Vol. 118 Special issue: Waste as a Resource (2022)

    About the Cover:

    Waste as a resource: South African perspectives on circularity

    Circularity, with a focus on waste management, influences social and economic resilience as well as planetary health. This special issue presents the current societal and environmental issues in waste, the technology available, and the sustainable practices within the waste sector to achieve a socially just transition to a waste economy within South Africa’s socio-economic context. 

    The publication of this special issue was sponsored by the Community of Practice (CoP) ‘Waste to Value: Transitioning South Africa towards a Waste-to-Resource Circular Economy’ funded by the National Research Foundation of South Africa.

    Full online issue available here.

  • Vol. 118 No. 7/8 (2022)

    About the cover:

    The Comrades Marathon is South Africa’s most recognised and largest ultramarathon event. The race will be held later in the year – in August – in 2022 than in previous years. Havenga and colleagues show that the later date will increase the risk of heat stress conditions for the runners.

    Full online issue available here.

  • Vol. 118 No. 5/6 (2022)

    About the cover:

    ‘How to do social distancing in a shack: COVID-19 in the South African context’

    The somewhat ironic title for this special issue captures a dilemma that we seek to address: how to bring together the best thinking in the social sciences and the biomedical sciences to work through the complex challenges posed by COVID-19. How, indeed, does one do social distancing in a shack?

    Full online issue available here.

  • Vol. 118 No. 3/4 (2022)

    About the cover:

    A springbok (Antidorcas marsupialis). Rossouw compares the distal phalanges of adult springbok and shows distinctive morphological differences between the subspecies Antidorcas marsupialis marsupialis and Antidorcas marsupialis hofmeyri. Photo: Leon Pauleikhoff

    Full online issue available here.

  • Vol. 118 No. 1/2 (2022)

    About the cover:

    Flower of Hibiscus sabdariffa L. The hibiscus is rich in phytochemicals, particularly polyphenols and anthocyanins. El-Naeem and colleagues investigated xanthine oxidase inhibition by isolated anthocyanins for development of potential novel drugs to treat diseases such as gout and hypertension.

    Full online issue available here.

  • Vol. 117 No. 11/12 (2021)

    About the cover:

    Two African violins (photo: Martina Meincken). Meincken and colleagues show that several southern African wood species are suitable to be used as tonewoods and that the sound produced with such a violin is – although somewhat different – of high quality, comparable to the sound quality of violins made traditionally from spruce and maple wood. The violin on the left was made from yellowwood and sapele (by Hannes Jacobs) and the violin on the right was made from blackwood, hardpear and sapele (in the Department of Forest and Wood Science at Stellenbosch University with the help of Hadley Dumini).

    Full online issue available here.

  • Vol. 117 No. 9/10 (2021)

    About the cover:

    Colourful corals. Corals become stressed when exposed to elevated temperatures for extended periods and bleaching can occur. Wells and colleagues analyse temperature measurements taken between 1994 and 2015 on Nine Mile Reef at Sodwana to elucidate the driving mechanisms of the temperature anomalies around Sodwana. Sodwana experiences short-term temperature fluctuations that may provide relief from coral bleaching and be crucial in the future survival of the Sodwana reef system.

    Full online issue available here.

  • Vol. 117 No. 7/8 (2021)

    About the cover:

    Mollusc collections are among the oldest natural science collections in South Africa. Cole collates information about these diverse collections scattered across South Africa.

    Photo: Kevin Cole.

    Full online issue available here.

  • Vol. 117 No. 5/6 (2021)

    About the cover:

    Palaeoenvironmental reconstruction of the Grallator trackway in the lower Clarens Formation at the Storm Shelter ichnosite in the Eastern Cape, South Africa (modified after the original artwork by Akhil Rampersadh and Emese M. Bordy). Bordy documents this newly discovered Early Jurassic trackway.

    Full online issue available here.

  • Vol. 117 No. 3/4 (2021)

    About the cover:

    A meteor fireball (or bolide) approaching the Earth’s surface. During the early evening of 27 July 2018, residents in southwestern Madagascar observed a rapidly moving bright light in the sky which exploded into multiple smaller glowing fragments. In their article, Gibson and colleagues confirm that this event was a meteorite fall – only the second known meteorite fall over Madagascar and the first that can be linked to a bolide.

    Full online issue available here.

  • Vol. 117 No. 1/2 (2021)

    About the cover:

    As we enter the UN Decade of Ecosystem Restoration (2021–2031) with the goal “to prevent, halt and reverse the degradation of ecosystems on every continent and in every ocean”, several articles in this issue report on the need for or efforts towards monitoring and conservation of terrestrial and marine ecosystems in South Africa (image: ©Nastco).

    Full online issue available here.

  • Vol. 116 No. 11/12 (2020)

    This special issue commemorates the International Year of Plant Health 2020 and will serve as an excellent source of the latest research, reviews and commentaries from leading plant pathologists and entomologists in South Africa. It will inform not only plant pathologists and food growers, but also policymakers and the public of the importance of plant health. As Mirko Montuori (UN Food and Agriculture Organization) states in his Commentary, ‘…our own health depends on plants while the health of plants depends on us’.

    Full online issue available here.

  • Vol. 116 No. 9/10 (2020)

    About the cover: 

    Ruminant production plays a vital role in human nutrition and livelihoods. Scholtz and colleagues provide a balanced perspective on this role and the contribution of ruminants to greenhouse gas emissions.

    Full online issue available here.

  • Vol. 116 No. 7/8 (2020)

    About the cover:

    Baobab trees. In an article in this issue, Kotzé identifies characteristic solar periodicities from carbon isotope data of 1000-year-old baobab trees.

    Full online issue available here.

    Special compilation: More eyes on COVID-19:

    This issue also includes a series of Invited Commentaries that seeks to provide ‘more eyes’ on the COVID-19 pandemic by drawing in perspectives from experts in the social sciences and humanities. Cover image: Mucsi Márton (CC-BY-SA-4.0)

  • Special compilation: More eyes on COVID-19

    A series of Invited Commentaries that seeks to provide ‘more eyes’ on the COVID-19 pandemic by drawing in perspectives from experts in the social sciences and humanities. Cover image: Mucsi Márton (CC-BY-SA-4.0)

1-25 of 96