Browsing Research Output by Title
Now showing items 8591-8610 of 13460
-
O6-methylguanine-DNA methyltransferase (MGMT): can function explain a suicidal mechanism?
(Elsevier, 2011)Why does O6-methylguanine-DNA methyltransferase (MGMT), an indispensable DNA repair enzyme, have a mechanism which seems to run counter to its importance? This enzyme is key to the removal of detrimental alkyl adducts from ... -
"[O]p die groter doek van menslike inspanninge" : 'n eudaimoniese perspektief op die werke van Marlene van Niekerk met spesifieke fokus op Die sneeuslaper
(Afrikaanse Letterkundevereniging (ALV), 2016)Friendship is important in Marlene van Niekerk's Die sneeuslaper, not only thematically, but also textually. The text converses with the reader both in relational (Silverman, 2009) and eudaimonic terms (Pawelski & Moores, ... -
The Obama factor: responses in South Korea (2008-2009)
(NWU, 2012)An analysis is made in this article of responses in the South Korean media to the rise of Barack Obama, starting with his appearance on the scene as presidential contender, then being nominated as the official candidate ... -
Obesity and metabolomics: metallothioneins protect against high-fat diet-induced consequences in metallothionein knockout mice
(Mary Ann Liebert Inc., 2015)Obesity continues to rise as an alarming global epidemic. System level mechanisms, diagnostics, and therapeutics are sorely needed so as to identify at risk individuals and design appropriate population scale interventions. ... -
Object-oriented embedded C
(IEEE, 2009)This paper presents an object-oriented implementation of ANSI-C for embedded systems. It offers practical guidelines for producing generic software libraries and portable applications. While various object-oriented ... -
Objectively determined habitual physical activity in South African adolescents: the PAHL study
(BioMed Central, 2014)Background There is limited data on objectively determined habitual physical activity (PA) in 16-year old South African adolescents. The purpose of this study was to objectively determine the habitual PA of adolescents ... -
Observation and quantification of aerosol outflow from southern Africa using spaceborne lidar
(ASSAf, 2020)Biomass burning in Africa provides a prolific source of aerosols that are transported from the source region to distant areas, as far away as South America and Australia. Models have long predicted the primary outflow and ... -
Observation of pulsed y-rays above 25 GeV from the crab pulsar with MAGIC
(AAAS (American Association for the Advancement of Science), 2008) -
Observation of supernova remnant IC 443 with the Fermi Large Area Telescope
(IOP Publishing, 2010)We report observation of the supernova remnant (SNR) IC 443 (G189.1+3.0) with the Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) in the energy band between 200 MeV and 50 GeV. IC 443 is a shell-type SNR with ... -
Observation of the extremely bright flare of the FSRQ 3C279 with H.E.S.S. II
(PoS, 2017)In June 2015, the Flat Spectrum Radio Quasar 3C 279 underwent an extremely bright gamma-ray flare, with an increase of the flux above 100 MeV by a factor 10 in less than 1 day, revealing an intrinsic variability timescale ... -
An observational study of outdated technology
(Kre publishers, 2012)The use of paper-based approaches is still alarmingly prevalent in corporate environments. The objective of thispaper is to explore paper usage in corporate and higher education institutions by observing the use of traditional ... -
Observations and modeling of gamma-ray millisecond pulsars seen with the Fermi LAT
(AIPC, 2011)We present a summary of gamma-ray millisecond pulsar (MSP) observations with the Fermi Large Area Telescope. The radio and gamma-ray light curves of these MSPs have been modeled in the framework of the retarded vacuum ... -
Observations of ozone formation in southern African savanna and grassland fire plumes
(Elsevier, 2020)Open biomass burning is one of the largest sources of aerosols and reactive trace gases into the atmosphere, having a significant effect on earth's radiative budget and air quality. Biomass burning degrades air quality by ... -
Observations of the blazar PKS 2023-07 in flaring state with H.E.S.S. And Fermi-LAT in 2016-2017 and constraints on an intrinsic cut-off
(Sissa Medialab, 2019)PKS 2023−07 is a flat spectrum radio quasar located at a redshift z = 1.388, farther than any source currently detected at very high energies (E > 100 GeV). At such energies, absorption by the extragalactic background ... -
Observations of the flaring Fermi-LAT blazars and prospects in spectro-polarimetry with SALT-RSS
(HEASA, 2016)The Fermi Gamma-Ray Space telescope has identified 1741 active galactic nuclei during its first four years of observation (2008-2012) and detected 1145 blazars and 573 blazar candidates of uncertain type (BCUs) as listed ... -
Observations of the Large Magellanic Cloud with Fermi
(EDP Sciences, 2010)Context. The Large Magellanic Cloud (LMC) is to date the only normal external galaxy that has been detected in high-energy gamma rays. Highenergy gamma rays trace particle acceleration processes and gamma-ray observations ... -
Observations of the Sagitarrius dwarf galaxy by the HESS experiment and search for a dark matter signal
(Elsevier, 2008)Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of high quality data are available after data ... -
Observations on dust mites (Acari: Pyroglyphidae) in coastal hospitals in South Africa
(MedPharm Publications, 2012)Surveys of houses in South Africa have shown that dust mites and mite-derived antigens are more common along the eastern and southern coastal lowlands than on the central Highveld plateau. The present study extended this ... -
Observing continental boundary-layer structure and evolution over the South African savannah using a ceilometer
(Springer, 2019)The atmospheric boundary layer (BL) is the atmospheric layer coupled to the Earth’s surface at relatively short timescales. A key quantity is the BL depth, which is important in many applied areas of weather and climate ...
