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William John Burchell: The multi-skilled polymath

open access: yesSouth African Journal of Science, 2012
On the bicentenary of William John Burchell's sojourn and journey in southern Africa, we review his contribution to science in the region. In November 1810, Burchell arrived in Cape Town and, in mid-1811, he set off on a 4-year, 7000-km journey of ...
Roger Stewart, Brian Warner
doaj   +7 more sources

The non-indigenous dung beetle (Onthophagus nuchicornis) can effectively reproduce using the dung of indigenous eastern North American mammals [PDF]

open access: yesPeerJ
Non-indigenous dung beetle (Coleoptera: Scarabaeoidea) species in North America are important contributors to ecosystem functions, particularly in pasture-based livestock systems.
Alexe Indigo   +3 more
doaj   +3 more sources

Noyori–Ikariya Asymmetric Transfer Hydrogenation of Prochiral α‑CF3 and α‑SF5 Ketones [PDF]

open access: yesACS Organic & Inorganic Au
Kelly Burchell-Reyes   +2 more
doaj   +2 more sources

Carotenoid content in the fry of African sharptooth catfish (Clarias gariepinus Burchell) [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1994
Using column and thin layer chromatography, carotenoid contents were determined in the African sharptooth catfsh (Clarias gariepinus Burchell).
B. Czeczuga, B. Kłyszejko
doaj   +3 more sources

Eponyms associated with the nomenclature of the recent species of rhinoceros

open access: yesPachyderm, 2021
Since 1758, a total of 16 eponyms have been described to honour explorers and taxonomists for the recent species of rhinoceros. This paper presents short biographies and the circumstances of the description of these names used in zoological nomenclature.
Kees Rookmaaker
doaj   +1 more source

Histone Methylases and Demethylases Regulating Antagonistic Methyl Marks: Changes Occurring in Cancer

open access: yesCells, 2022
Epigenetic regulation of gene expression is crucial to the determination of cell fate in development and differentiation, and the Polycomb (PcG) and Trithorax (TrxG) groups of proteins, acting antagonistically as complexes, play a major role in this ...
Joyce Taylor-Papadimitriou   +1 more
doaj   +1 more source

Survival of fossils under extreme shocks induced by hypervelocity impacts [PDF]

open access: yes, 2014
Experimental data are shown for survival of fossilized diatoms undergoing shocks in the GPa range. The results were obtained from hypervelocity impact experiments which fired fossilized diatoms frozen in ice into water targets.
Burchell, Mark J.   +3 more
core   +1 more source

Flexicurity as a moderator of the relationship between job insecurity and psychological well-being [PDF]

open access: yes, 2009
Flexicurity has been heralded as the solution to simultaneously maintain the well-being of employees through employment security while allowing employers to benefit from flexibility.
Burchell, B
core   +1 more source

Analecta Veterinaria | Volumen 32 | Número 2

open access: yesAnalecta Veterinaria, 2012
Artículos de Investigación/Research articles - Relación entre parámetros ultrasonográficos y edad gestacional en la gata doméstica. Relationship between ultrasonographic measurements and gestational age in the queen | García Mitacek MC, Praderio RG ...
Facultad de Ciencias Veterinarias::http://voc.sedici.unlp.edu.ar/node/47693::600
doaj   +6 more sources

The black-necked grebe Podiceps nigricollis. A new bird record for the Kruger National Park

open access: yesKoedoe: African Protected Area Conservation and Science, 1976
The avifauna of the Kruger National Park (KNP) was described in detail by Kemp (1974). However, species new to the list are bound to turn up occasionally.
A. C. van Bruggen
doaj   +1 more source

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