Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 482-501 of 4818
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Broadband pulsations from PSR B1821-24: implications for emission models and the pulsar population of M28
(IOP Publishing, 2013)We report the Fermi Large Area Telescope discovery of γ-ray pulsations from the 22.7 ms pulsar A in the double pulsar system J0737−3039A/B. This is the first mildly recycled millisecond pulsar (MSP) detected in the GeV ... -
Brominated flame retardants in wild bird eggs from the industrialised heartland of South Africa
(Taylor & Francis, 2020)Brominated flame-retardants (BFRs), including polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD), were analysed in 77 eggs of 13 wild bird species from Gauteng and northern Free State (the industrial ... -
Browsing intensity of herbaceous forbs across a semi-arid savanna catenal sequence
(Elsevier, 2015)Ecological models to explain savanna heterogeneity and functioning weakly represent herbaceous forbs, which inevitably created knowledge gaps regarding the diversity and ecology of forbs. Forbs constitute over 70% of ... -
Bryobia abyssiniae (Prostigmata: Tetranychidae), a new species from the highlands of Ethiopia
(Taylor & Francis, 2016)Bryobia abyssiniae Fashing & Ueckermann, a recently discovered species, is described using DNA-barcoding as well as morphological features of the adult female and all post-embryonic instars. The species is characterized ... -
Buakea (Lepidoptera: Noctuidae), a new genus of African stem borers: morphological, ecological and molecular data
(Entomological Society of Southern Africa, 2011)A new genus of African stem borers of the subtribe Sesamiina (Lepidoptera: Noctuidae), Buakea gen. n., is described as well as the three species it includes, two new, B. venusta sp. n. and B. kaeuae sp. n., and a species ... -
Buffer nitrogen solubility, in vitro ruminal partitioning of nitrogen and in vitro ruminal biological activity of tannins in leaves of four fodder tree species
(Wiley, 2014)This study explores the chemical composition, buffer N solubility, in vitro ruminal N degradability and in vitro ruminal biological activity of tannins in leaves from Gliricidia sepium, Leucaena leucocephala, Morus alba ... -
Building blocks in Planning research methodology : a roadmap to research design options
(Sun Media, 2022)Making sense of the myriad of available research design options is generally an arduous task for researchers. Proper research design is, subsequently, often neglected in Planning research, resulting in superficial research ... -
Building Capacity and Developing Human capital
(Routledge Taylor & Francis Group, 2012)There is a growing consensus on the potential for information and communications technologies (ICTs) to support socio-economic development in sub-Saharan Africa (SSA). Universities as providers of higher education are ... -
Building national and local capacity for disaster risk management in Cameroon
(Emerald, 2019)Purpose – A new framework to support the national and local capacity building plan for disaster risk management (DRM) in Cameroon is presented. For the past 30 years, after the general re-organisation of the civil ... -
The built environment and physical activity participation in a semi–urban area in Southern Gauteng
(LAM Publications; AJOL; Sabinet, 2012)Public health researchers over the years have drawn the attention to the effects of community environments on health conditions such as physical inactivity. Physical inactivity has been reported to be the second leading ... -
Burrowsia, a new genus of lichenized fungi (Caliciaceae), plus the new species B. cataractae and Scoliciosporum fabisporum, from Mpumalanga, South Africa
(Elsevier, 2020)The new genus Burrowsia (Caliciaceae) is proposed to accommodate the new species B. cataractae, which is known from only a single locality in Mpumalanga, South Africa. Burrowsia is characterized by its pigmented, submuriform ... -
Butanol as a drop-in fuel: a perspective on production methods and current status
(Springer, 2020)The rising fossil fuel prices as well as negative climatic conditions caused by fossil fuel emissions have prompted technologists and scientists to develop alternative value-added fuels. These fuels can be produced from ... -
Butlerius butleri Goodey, 1929 (Rhabditida) from Iran with the phylogenetic position of the species
(Society of Nematologists, 2015)A population of Butlerius butleri Goodey, 1929 was isolated from vermicompost in Kerman in the Kerman Province of Iran during a nematode survey that was conducted during 2014. This population of B. butleri is characterized ... -
Butterfly conservation in Southern Africa
(Springer, 2015)The origins and development of butterfly conservation in southern Africa are explored and the role of the Lepidopterists’ Society of Africa (LSA) in the promotion of butterfly conservation and research is described. LSA ... -
The butterfly effect: parasite diversity, environment, and emerging disease in aquatic wildlife
(Elsevier, 2015)Aquatic wildlife is increasingly subjected to emerging diseases often due to perturbations of the existing dynamic balance between hosts and their parasites. Accel- erating changes in environmental factors, together ... -
C2-substituted quinazolinone derivatives exhibit A1 and/or A2A adenosine receptor affinities in the low micromolar range
(Elsevier, 2020)Antagonists of the adenosine receptors (A1 and A2A subtypes) are widely researched as potential drug candidates for their role in Parkinson’s disease-related cognitive deficits (A1 subtype), motor dysfunction (A2A subtype) ... -
C679X loss-of-function PCSK9 variant lowers fasting glucose levels in a black South African population: a longitudinal study
(Elsevier, 2018)Aims To determine the longitudinal association of the loss-of-function (LOF) PCSK9 variants (C679X and A443T), proxies of PCSK9 inhibitor drugs, with LDL-C, fasting glucose and glycated hemoglobin. Methods We conducted ... -
Calcium : magnesium ratio affects environmental stress sensitivity in the serpentine-endemic Alyssum inflatum (Brassicaceae)
(CSIRO Publishing, 2015)Plants endemic to serpentine soils are adapted to harsh environmental conditions typical of those soils, particularly, low (<1) calcium (Ca) : magnesium (Mg) ratios. We compared survival of two perennial Alyssum species ... -
Calibration and validation of optical chlorophyll-measuring devices for use in predicting crude protein concentration in tropical grass herbage
(Wiley, 2016)The objective of this experiment was to evaluate the Fieldscout CM 1000 NDVI and Yara N-Tester as easy-to-use and cost-effective tools for predicting foliar chlorophylls (a, b and total) and crude protein (CP) concentrations ... -
A calibration neutron monitor: energy response and instrumental temperature sensitivity
(American Geophysical Union, 2008)Neutron monitors are integral detectors of secondary cosmic rays. Since each of them has its own detection efficiency, energy spectra cannot readily be derived from their observations. To circumvent this problem, latitudinal ...