Browsing by Title
Now showing items 4598-4617 of 6340
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The Q/U imaging experiment instrument
(The American Astronomical Society, 2013)The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the cosmic microwave background, targeting the imprint of inflationary gravitational waves at large angular scales(∼1◦). Between 2008 October and ... -
A qualitative assessment of South African adolescents’ motivations for and against substance use and sexual behavior
(Wiley-Blackwell, 2010)Focus groups (N 5 15 groups; 8 with girls, 7 with boys) with adolescents in high schools near Cape Town, South Africa, were used to conduct a qualitative investigation of reported reasons for using and not using substances ... -
Qualitative exploration of HIV-related stigma and the psychosocial well-being of children orphaned by AIDS
(Springer, 2020)Children orphaned by AIDS continue to display lower levels of psychosocial well-being. While HIV-related stigma has been identified as a risk factor for healthy psychosocial development, there remains an inadequate ... -
A qualitative meta-synthesis of facilitators and barriers to tuberculosis diagnosis and treatment in Nigeria
(Springer Nature, 2021): Despite progress in tuberculosis (TB) control globally, TB continues to be a leading cause of death from infectious diseases, claiming 1.2 million lives in 2018; 214,000 of these deaths were due to drug resistant strains. ... -
A qualitative meta-synthesis of interpersonal violence prevention programs focused on males
(SAGE Publications, 2017)Exceptionally high levels of interpersonal violence have triggered a call by many experts for the need to determine effective ways to address the onset and effects of exposure to interpersonal violence. The specific aim ... -
A qualitative meta-synthesis of interpersonal violence prevention programs focused on males
(SAGE, 2021)Exceptionally high levels of interpersonal violence have triggered a call by many experts for the need to determine effective ways to address the onset and effects of exposure to interpersonal violence. The specific aim ... -
A qualitative study of referring agents’ perceptions of access barriers to inpatient substance abuse treatment centres in the Western Cape
(BioMed Central, 2015)Background: Despite empirical support for the individual and public health benefits of treating substance use disorders (SUDs) , access to these services is impeded by several barriers. Although many studies on access ... -
A qualitative study of the challenges of providing pre-prosthetic rehabilitation in rural South Africa
(SAGE Publications, 2017)BACKGROUND: There is a known shortage of rehabilitation staff in rural settings and a sharp increase in the number of lower limb amputations being performed. A lack of adequate pre-prosthetic rehabilitation will result in ... -
Qualitatively different ways of unpacking visualrepresentations when teaching intermolecularforces in upper secondary school
(Wiley, 2021)Since visual representations play a particularly important role in the teaching and learning of chemistry, the ex-ploration described in this article focuses on them. This is an explorative study of the qualitatively ... -
"Quality is bound up with our values" - Evaluating the quality of mentoring programmes
(Routledge, 2005)This paper discusses quality evaluation of health sciences mentoring programmes. The discussion highlights the way in which perceptions of what constitutes quality shape evaluative purposes. Potential tensions between ... -
Quality of HIV counselling in South Africa
(Kamla-Raj, 2015)HIV counselling and testing (HCT) has become increasingly available in South Africa since the 1990s. Over 4500 public health facilities offer client and provider-initiated HIV counselling and testing. Counselling and testing ... -
Quality of home-based rapid HIV testing by community lay counsellors in a rural district of South Africa
(International Aids Society, 2013)INTRODUCTION: Lack of universal, annual testing for human immunodeficiency virus (HIV) in health facilities suggests that expansion of HIV testing and counselling (HTC) to non-clinical settings is critical to the achievement ... -
Quality of life amongst young adults with stroke living in Kenya
(Makerere University Medical School, 2013)BACKGROUND: The world has been experiencing an increase of stroke among young adults. Occurrence of stroke in young adults dramatically affects the quality of life of the individuals. OBJECTIVES: To investigate the quality ... -
The quality of life of HIV-infected and non-infected women post-caesarean section delivery
(AOSIS OpenJournals Publishing AOSIS (Pty) Ltd, 2017)There is a dearth of literature on the postnatal quality of life (QoL) of women. This study aimed to determine to QoL of HIV-infected and non-infected women post-caesarean section delivery. This prospective, longitudinal ... -
Quantification and characterisation of microplastics ingested by selected juvenile fish species associated with mangroves in KwaZulu- Natal, South Africa
(Elsevier, 2020)Though the number studies on microplastic ingestion by fish is growing, data on fish species charac- teristic of the South African coastline are scarce. This study quantified and characterised (physically and chemically) ... -
Quantification and identification of sperm subpopulations using computer-aided sperm analysis and species-specific cut-off values for swimming speed
(Taylor & Francis, 2013)Motility is an essential characteristic of all fl agellated spermatozoa and assessment of this parameter is one criterion for most semen or sperm evaluations. Computer-aided sperm analysis (CASA) can be used to measure ... -
Quantification of radicals generated in a sonicator
(Iranian Chemical Society, 2016)The hydroxyl radical (OH•) is a powerful oxidant produced as a consequence of cavitation in water. It can react nonspecifically in breaking down persistent organic pollutants in water into their mineral form. It can also ... -
Quantitative assessment of heavy metal effects on sperm function using computer‐aided sperm analysis and cytotoxicity assays
(Wiley, 2018)One known environmental risk factor impacting on human reproduction is heavy metal pollution. Although some metals (e.g., Cu, Se and Zn) have protective effects on the male reproductive system in low doses, heavy metals ... -
A quantitative in-depth analysis of the prototype sdB+BD system SDSS J08205+0008 revisited in the Gaia era
(Oxford University Press, 2021)Subdwarf B stars are core-helium-burning stars located on the extreme horizontal branch (EHB). Extensive mass loss on the red giant branch is necessary to form them. It has been proposed that substellar companions could ... -
Quantitative sperm characteristics of Tankwa goats with special reference to hyperactivated motility
(South African Society for Animal Science, 2020)Computer-assisted semen analysis (CASA) is an automated and objective method of evaluating structural (e.g. morphology) and functional sperm parameters (e.g. motility and hyperactivation). Sperm hyperactivation is essential ...
