Results 71 to 80 of about 3,325,785 (290)

Intracontinental deformation in southern Africa during the late Cretaceous [PDF]

open access: yes, 2014
Intracontinental deformation accommodated along major lithospheric scale shear zone systems and within associated extensional basins has been well documented within West, Central and East Africa during the Late Cretaceous.
Gleadow, Andrew   +14 more
core   +1 more source

Switching Spike Plasticity Shapes ACE2 Engagement Across SARS‐CoV‐2 Variants

open access: yesAdvanced Science, EarlyView.
Conformational plasticity governs SARS‐CoV‐2 spike function and ACE2 recognition. Using high‐speed AFM and single‐molecule force spectroscopy, we analyzed the ancestral spike and nine variants, revealing progressive rigidification from Delta, variable plasticity in Omicron sublineages, and JN.1 compaction.
Sarah Stainer   +17 more
wiley   +1 more source

Use of airway clearance therapy in children hospitalised with acute lower respiratory tract infections in a South African paediatric hospital

open access: yesSouth African Journal of Physiotherapy, 2020
Background: Little is known about the prescription, frequency and nature of airway clearance therapy (ACT) in children hospitalised with lower respiratory tract infections (LRTIs).
Lieselotte Corten, Brenda M. Morrow
doaj   +1 more source

Low Latency Global Carbon Budget Reveals Late 2024 Carbon Losses and Contrasting Early 2025 Land Sink Recovery Signals

open access: yesAdvanced Science, EarlyView.
Low latency carbon budget estimates for July 2024–June 2025 combine atmospheric CO2 growth rates, fossil emissions, ocean uptake, DGVM land fluxes, and OCO‐2 inversions. The budget shows that late‐2024 land carbon losses dominate the annual anomaly, while early‐2025 recovery differs between bottom‐up models and top‐down inversions, especially in ...
Piyu Ke   +32 more
wiley   +1 more source

The Southern African Stone Age Site Index (SASSI): A Spatial, Chronological and Contextual Resource for Archaeological Research

open access: yesJournal of Open Archaeology Data
Southern Africa possesses a deep archaeological record, spanning more than a million years, which has attracted over a century of research. As a result, it offers one of the densest and most detailed pictures of Stone Age occupation history in Africa ...
Emily Hallinan
doaj   +1 more source

Middle aortic syndrome

open access: yesSouth African Journal of Radiology, 2004
No abstract available.
N. Khan, P.A. Scheepers, D.C. Thebe
doaj   +1 more source

Measurements of the branchial sieve of sardine (Sardinops sagax ocellatus) from the west and south coasts of southern Africa [PDF]

open access: yes, 2010
Includes abstract.Includes bibliographical references (p. 40-46).Branchial sieves of southern African sardine (Sardinops sagax ocellatus) were collected from three geographical regions along the southern African coast: Namibia, the south coast and the ...
Idris, Izwandy
core   +1 more source

Global Burden and Temporal Trends of Early‐Onset Tracheal, Bronchial, and Lung Cancer: An Analysis of GLOBOCAN 2022 and GBD 2023 Data

open access: yesAdvanced Science, EarlyView.
This study systematically assessed the global burden and temporal trends of EOTBL cancer in individuals aged 15–49 years. Smoking, ambient particulate matter pollution, and secondhand smoke remain dominant risk factors. Countries within the same Human Development Index (HDI) category exhibit distinct epidemiological trajectories, underscoring the need ...
Ye Tian   +8 more
wiley   +1 more source

A case of popliteal artery entrapment

open access: yesSouth African Journal of Radiology, 2004
No abstract available.
P.A. Scheepers, N. Khan, W.J.N Vermeulen
doaj   +1 more source

Palaeoproteomic Deconvolution of Physical and Genetic Collagen Mixtures

open access: yesAdvanced Science, EarlyView.
ClassiCOL_v2 uses a novel “peptide patching” framework that treats any collagen sample as a patchwork of peptide sequences derived from phylogenetically related species. This allows the algorithm to simultaneously resolve two previously intractable problems: multi‐species samples and/or database deficiencies.
Ian Engels   +12 more
wiley   +1 more source

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