Browsing Faculty of Natural Sciences by Title
Now showing items 569-588 of 2567
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Differentially expressed serum proteins from obese Wistar rats as a risk factor for obesity-induced diseases
(Springer Nature, 2020)Obesity is a chronic disease that negatively affects life expectancy through its association with life-threatening diseases such as cancer and cardiovascular diseases. Expression proteomics combined with in silico interaction ... -
Digital watermarking: a state-of-the-art review
(IIMC International Information Management Corporation, 2010)Digital watermarking is the art of embedding data, called a watermark, into a multimedia object such that the watermark can be detected or extracted later without impairing the object. Concealment of secret messages inside ... -
Direct optimal mapping for 21 cm cosmology: A demonstration with the hydrogen epoch of reionization array
(American Astronomical Society, 2022)Motivated by the desire for wide-field images with well-defined statistical properties for 21 cm cosmology, we implement an optimal mapping pipeline that computes a maximum likelihood estimator for the sky using the ... -
Direct parameter inference from global EoR signal with Bayesian statistics
(Oxford University Press, 2020)In the observation of sky-averaged HI signal from Epoch of Reionization (EoR), model parameter inference can be a computation-intensive work, which makes it hard to perform a direct one-stage model parameter inference by ... -
Direction-dependent corrections in polarimetric radio imaging. Iii. A-to-Z solver— Modeling the full jones antenna aperture illumination pattern
(IOP Publishing, 2022)In this third paper of a series describing direction-dependent corrections for polarimetric radio imaging, we present the the A-to-Z solver methodology to model the full Jones antenna aperture illumination pattern (AIP) ... -
Discovery of a filamentary synchrotron structure connected to the coherent magnetic field in the outer galaxy
(The Astrophysical Journal, 2023)Using data from the Galactic Arecibo L-band Feed Array Continuum Transit Survey, we report the discovery of two previously unidentified, very compressed, thin, and straight polarized filaments approximately centered at ... -
Discrimination of tomato plants (solanum lycopersicum) grown under anaerobic baffled reactor effluent, nitrified urine concentrate and commercial hydroponic fertilizer regimes using multi-source satellite data
(ISPRS, 2019)We evaluate the detection and discriminative strength of three different satellite spectral settings, namely, HyspIRI, the forthcoming Landsat 9 and Sentinel 2-MSI, in mapping tomato (Solanum lycopersicum) plants grown ... -
Discrimination of tomato plants (solanum lycopersicum) grown under anaerobic baffled reactor effluent, nitrified urine concentrates and commercial hydroponic fertilizer regimes using simulated sensor spectral settings
(MPDI, 2019)We assess the discriminative strength of three different satellite spectral settings (HyspIRI, the forthcoming Landsat 9 and Sentinel 2-MSI), in mapping tomato (Solanum lycopersicum Linnaeus) plants grown under hydroponic ... -
Disentangling non-gaussianity, bias, and general relativistic effects in the galaxy distribution
(American Physical Society, 2012)Local non-Gaussianity, parametrized by f NL , introduces a scale-dependent bias that is strongest at large scales, precisely where general relativistic (GR) effects also become significant. With future data, it should ... -
Disentangling the anisotropic radio sky: Fisher forecasts for 21 cm arrays
(Oxford University Press, 2024)The existence of a radio synchrotron background (RSB) excess is implied by a number of measurements, including excess emission seen by the Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission (ARCADE 2) ... -
Dispersal and coastal geomorphology limit potential for mangrove range expansion under climate change
(Wiley, 2022)Latitudinal range limits for mangroves on high-energy, wave-dominated coasts are controlled by geomorphological features and estuarine dynamics. Mangroves reach a southern global range limit along the South African ... -
Dispersal and coastal geomorphology limit potential for mangrove range expansion under climate change
(John Wiley and Sons Inc, 2022)Latitudinal range limits for mangroves on high-energy, wave-dominated coasts are controlled by geomorphological features and estuarine dynamics. Mangroves reach a southern global range limit along the South African coastline, ... -
Dispersal dynamics of SARS-CoV-2 lineages during the first epidemic wave in New York City
(Public Library of Science, 2021)During the first phase of the COVID-19 epidemic, New York City rapidly became the epicenter of the pandemic in the United States. While molecular phylogenetic analyses have previously highlighted multiple introductions and ... -
Dissemination and survival of non-indigenous bacterial genomes in pristine Antarctic environments.
(Springer Verlag, 2005)Continental Antarctic is perceived as a largely pristine environment, although certain localized regions (e.g., parts of the Ross Dependency Dry Valleys) are relatively heavy impacted by human activities. The procedures ... -
Disturbed, diffuse, or just missing? A global study of the H I content of Hickson compact groups
(EDP Sciences, 2023)Context. Hickson compact groups (HCGs) are dense configurations of four to ten galaxies, whose H I morphology appears to follow an evolutionary sequence of three phases, with gas initially confined to galaxies, then ... -
The diurnal activity budgets of extralimital giraffe (Giraffa camelopardalis giraffa) in the Western Cape Province, South Africa
(Wiley, 2023)Despite being an extralimital species in the region, South African giraffes (Giraffa camelopardalis giraffa, Schreber 1784) are continuously being introduced into the Albany Thicket Biome of the Western Cape Province of ... -
Diurnal variations in global Joule heating morphology and magnitude due to neutral winds.
(Wiley, 2018)In the polar ionosphere, variations in Joule heating are significantly controlled by changes in plasma convection, such as that brought about by changes in the interplanetary magnetic field. However, another important ... -
A diverse array of genetic factors contribute to the pathogenesis of Systemic Lupus Erythematosus
(Biomed Central, 2013)Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease with variable clinical presentation frequently affecting the skin, joints, haemopoietic system, kidneys, lungs and central nervous system. It can ... -
Diverse genomoviruses representing twenty-nine species identified associated with plants
(Springer Nature, 2020)Genomoviruses (family Genomoviridae) are circular single-stranded DNA viruses that have been mainly identifed through metagenomics studies in a wide variety of samples from various environments. Here, we describe 98 genomes ... -
The diversity and variability of star formation histories in models of galaxy evolution
(2020-07-25)Understanding the variability of galaxy star formation histories (SFHs) across a range of time-scales provides insight into the underlying physical processes that regulate star formation within galaxies. We compile the ...