Browsing by Title
Now showing items 3065-3084 of 8023
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The h i in ring galaxies survey (h i -rings) - effects of the bar on the h i gas in ring galaxies
(Cambridge University Press, 2023)We present a new high-resolution neutral atomic hydrogen (Hi) survey of ring galaxies using the Australia Telescope Compact Array (ATCA). We target a sample of 24 ring galaxies from the Buta (1995) Southern Ring Galaxy ... -
The H I intensity mapping bispectrum including observational effects
(2021-07-30)The bispectrum is a three-point statistic with the potential to provide additional information beyond power spectra analyses of survey data sets. Radio telescopes that broadly survey the 21-cm emission from neutral hydrogen ... -
H i intensity mapping with MeerKAT: 1/f noise analysis
(Oxford University Press, 2021)The nature of the time correlated noise component (the 1/f noise) of single dish radio telescopes is critical to the detectability of the H i signal in intensity mapping experiments. In this paper, we present the 1/f noise ... -
H I intensity mapping with MeerKAT: Power spectrum detection in cross-correlation with WiggleZ galaxies
(Oxford University Press, 2023)We present a detection of correlated clustering between MeerKAT radio intensity maps and galaxies from the WiggleZ Dark Energy Survey. We find a 7.7σ detection of the cross-correlation power spectrum, the amplitude of which ... -
H-Atlas: The cosmic abundance of dust from the far-infrared background power spectrum
(IOP Science, 2013)We present a measurement of the angular power spectrum of the cosmic far-infrared background (CFIRB) anisotropies in one of the extragalactic fields of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) at ... -
H2O emission in high-z ultra-luminous infrared galaxies
(edp sciences, 2013)Using the IRAM Plateau de Bure interferometer (PdBI), we report the detection of water vapor in six new lensed ultraluminous starburst galaxies at high redshift, discovered in the Herschel Astrophysical Terahertz Large ... -
Hackathons as a means of accelerating scientific discoveries and knowledge transfer
(Cold Spring Harbor Laboratory Press, 2018)Scientific research plays a key role in the advancement of human knowledge and pursuit of solutions to important societal challenges. Typically, research occurs within specific institutions where data are generated and ... -
"Half a loaf is better than nothing": The risks and resilience of day labourers in Cape Town
(Social Work (South Africa), 2019)According to Worthington and Scherer (2004), resilience is the process of adapting well in the face of adversity, trauma, tragedy, threats or other significant sources of stress. The concept of resilience draws upon previous ... -
“Half a loaf is better than nothing”: The risks and resilience of day labourers in Cape Town
(Stellenbosch University, 2019)According to Worthington and Scherer (2004), resilience is the process of adapting well in the face of adversity, trauma, tragedy, threats or other significant sources of stress. The concept of resilience draws upon ... -
Hall measurements on carbon nanotube paper modified with electroless deposited platinum
(Springer, 2010)Carbon nanotube paper, sometimes referred to as bucky paper, is a random arrangement of carbon nanotubes meshed into a single robust structure, which can be manipulated with relative ease. Multi-walled carbon nanotubes ... -
‘Hallo hoe gaan dit, wat maak jy?’: Phatic communication, the mobile phone and coping strategies in a South African context
(University of the Western Cape, 2015)This paper looks at the ways in which the mobile phone has become a means through which phatic communication is being expressed. More specifically, the paper shows how, in an impoverished community such as the Wesbank ... -
Handheld fast-track feedback instant messaging
(Telkom, 2003)As mobile devices and networks become more data-centric, text messaging requires an extension of co-presence capabilities for better interactive discussion between input/output handicapped handheld users and their free ... -
Handling medical emergencies
(South African Dental Association, 2015)Medical emergencies can occur at any time in the dental surgery. Routine dental operations and procedures that generally cause no harm or distress to fit and normal patients may give rise to symptoms, alarming and of ... -
Hanging on a wire: A historical and socio-eco- nomic study of Paulshoek village in the communal area of Leliefontein, Namaqualand
(Institute for Poverty, Land and Agrarian Studies, University of the Western Cape, 2003)Namaqualand is often considered an anomaly in South African social science research because of its distinct cultural, social and environmental conditions. No doubt, Namaqualand has many extremes: a sparse population, ... -
Happy Feet in a Hostile World? The Future of Penguins Depends on Proactive Management of Current and Expected Threats
(2019)Penguins face a wide range of threats. Most observed population changes have been negative and have happened over the last 60 years. Today, populations of 11 penguin species are decreasing. Here we present a review that ... -
Happy in the informal economy? A case study of well-being among day labourers in South Africa
(Clute Institute, 2013)Past research provided evidence of the negative effect that individual unemployment can have on subjective well-being. The persistent high levels of unemployment and poverty in South Africa have been well documented. Many ... -
"Harlekijns in den bonten stoet"? 'n Herbesoek aan die vroee komiese poesie in Afrikaans
(SAVN, 2013)“Harlequins in a pied parade”? A revisit to early comic poetry in Afrikaans Some South African newspapers and individuals considered the so-called “Patriot movement” or First Afrikaans Language Movement’s efforts to ... -
Harmony amidst conflict: using “heal the world” as advocacy for peace between palestine and israel
(African Journal of Peace and Conflict Studies, 2024)This study explored the potential of Michael Jackson's iconic song, "Heal the World," to serve as an effective advocacy tool for peace between Palestine and Israel. Released in 1991, the song's universal message of love, ... -
Harnessing public food procurement for sustainable rural livelihoods in South Africa through the national school nutrition programme: A qualitative assessment of contributions and challenges
(MPDI, 2021)This paper examines how public food procurements contributes to sustainable rural livelihoods through local sourcing of school food, what has become known as ‘home-grown’ school feeding. Specifically, it draws on in-depth ... -
Hatch traits of artificially incubated ostrich eggs as affected by setting position, angle of rotation and season
(AJOL, 2020)High levels of hatching failure in artificially incubated ostrich eggs cause considerable loss of income for the industry. In the 2015 - 2016 breeding seasons, between 846 and 1 549 egg records were used to determine the ...
