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Now showing items 21-30 of 61
'n Taksonomies-ekologiese studie van die superfamilie Eupodoidea (Acari:Prostigmata) van Suider-Afrika
(North-West University (South Africa), 1992)
A taxonomic survey of the Eupodoidea of southern Africa was undertaken. The a-taxonomic
study or microtaxonomy (~ayr & Ashlock, 1991) was supplemented with computer aided
taxonomic studies. The DELTA-system (DEscription ...
Enkele aspekte rakende die bio-beskikbaarheid van chemiese verbindings afkomstig van Suid-Afrikaanse vliegas
(North-West University (South Africa), 1995)
The bioavailability of chemical compounds found on
South African coal fly ash particles collected from Kendal,
Lethabo and Matimba power stations was examined.
Physiological sodium chloride solution, hydrochloric acid
and ...
Isolation and characterisation of biosurfactant-producing bacteria from oil contaminated sources
(North-West University (South Africa), 1998)
The mam objective of this study was to test a range of micro-organisms for
biosurfactant production, with the potential usage of these surfactants in
bioremediation. Fourteen isolates were screened for their ability to ...
Subjektiewe belewenis van privaatheid in die informele-woonhuisontwerp onder Tswanasprekendes in die Noordwes Provinsie
(North-West University (South Africa), 1997)
The informal housing situation is part of the housing problem in South Africa
which was partially caused by the abolishment of the Group Areas Act and
the Influx Control Act which contributed to rapid urbanisation and ...
Plantegroeidinamika tydens die prosesse van herstel en degradasie in 'n gedeelte van die grasveld- en Karoobioom van Suid-Afrika
(North-West University (South Africa), 1994)
Dynamic changes, such as the composition, basal cover and spatial pattern of species
take place in a natural rangeland when submitted to disturbances such as an
unpredictable or erratic rainfall pattern or different ...
Die inhibisie van die hepatitis B-virus oppervlakantigeen deur van antisin tegnologië gebruik te maak
(North-West University (South Africa), 1997)
The Hepadna virus family is a major annual cause of suffering and loss of life. The
Hepatitis B virus is one of the most important causes of this phenomenon, since it is
endemic in large parts of the world. This virus ...
Meganismes waardeur sommige plasminogeenaktiveerders en -inhibeerders plasmafibrinogeen en die risiko vir hartvatsiektes beïnvloed
(North-West University (South Africa), 1992)
Increased levels of plasma fibrinogen is regarded as an independent risk factor for
coronary heart disease (CHD). Factors which influence fibrinogen levels are
poorly understood. There is a possibility that tPA and PAI-1 ...
Die potensiaal en dinamika van Acacia karroo indringing, verdigting en afsterwing op die BC-landtipe
(North-West University (South Africa), 1991)
The occurrence of ligneous types has increased radically in the grassland
biome of South Africa in the course of the past decades. Thousands of hectares
of initially high potential grass veld have become useless for ...
An ecological assessment of the genus Cynodon for reclamation and restoration of disturbed areas in Southern Africa
(North-West University (South Africa), 1997)
A large section of landscape degradation in South Africa resulted from among
others, extensive mining activities. Usually these disturbed areas are plagued
with a combination of adverse conditions. Revegetation is the ...
Die ondersoek na spesifieke bakteriegroepe in die feses van geselekteerde proefpersone
(North-West University (South Africa), 1991)
Micro-organisms play an important role in the gastrointestinal tract of humans. These
organisms are mainly aerobic and anaerobic bacteria. This study was limited to the isolation
and cultivation of specific groups of ...