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Hazardous particles from coal fires from Santa Catarina, South Brazil
(International Pittsburgh Coal Conference, 2016)
Evaluation of a domestic-use low-smoke fuel produced via the pyrolysis of lump coals
(International Pittsburgh Coal Conference, 2016)
The influence of K2CO3 on the swelling and caking behavior of large South African coal particles
(International Pittsburgh Coal Conference, 2016)
Unidentified galactic high-energy sources as ancient pulsar wind nebulae in the light of new high energy observations and the new code
(AIP, 2012)
In a Pulsar Wind Nebula (PWN), the lifetime of inverse Compton (IC) emitting e− exceeds the lifetime of its progenitor pulsar (as well as its shell-type remnant), but it also exceeds the age of those that emit via synchrotron ...
Constraining the dark matter density in galaxy clusters
(PoS, 2015)
We illustrate the potential of using stellar velocity dispersion profiles of brightest cluster galaxies
(BCGs), in combination with X-ray and weak-lensing derived cluster mass profiles, to constrain
the matter distribution ...
Comparing support vector machine and multinomial naive Bayes for named entity classification of South African languages
(PRASA, 2014)
In this study, two classical machine learning algorithms, multinomial naive Bayes and support vector machines, are compared when applied to named entity recognition for two South African languages, Afrikaans and English.
The ...
Aerosol properties over an urban site, Johannesburg measured from sunphotometer
(SASAS, 2014)
In this paper, we present results using ground based Sunphotometer (a passive
remote sensing instrument designed to study aerosol properties) as a part of NASA’s AERONET data. The analysis was based on the winter and ...
A Douglas-Shapiro-Shields factorization approach to the Leech equation
(MTNS, 2014)
In a recent series of papers concrete procedures
were derived to compute a stable rational matrix solution to the
Leech equation with rational matrix data. In one of these papers
the procedure involved a specific ...
Central stellar populations of brightest cluster galaxies
(South African Institute of Physics, 2014)
We analyse the stellar populations of a sample of brightest cluster galaxies (BCGs), for which high signal-to-noise ratio, long-slit spectra were obtained on the Gemini telescopes, by fitting their spectra using the software ...
The detailed nature of active central cluster galaxies
(South African Institute of Physics, 2014)
We present detailed IFU observations of the central few kiloparsecs of the ionised nebulae surrounding four active central cluster galaxies in cooling flow clusters. All four galaxies have Hα filaments, and existing data ...