Vol 32 No 1 (2013) | Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i>

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Published: 2013-02-11

Oorspronklike Navorsing

Challenges in the teaching of evolution in the life sciences classroom.

Josef J. De Beer, Elizabeth Henning

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The diversity of South African spiders (Arachnida: Araneae: Documenting a National Survey).

Ansie Dippenaar-Schoeman, Almie van den Berg, Robin Lyle, Charles Haddad, Stefan Foord, Leon Lotz

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Private retirement resorts in South Africa: Guidelines for wellness and sustainability in the long term.

Andries C. Hauptfleisch

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Haemophilia amongst the descendants of Queen Victoria.

Francois P. Retief, Andr� Wessels, Johan F.G. Cilliers

4 bladsye
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Einstein se relatiwiteitsteorie: Op die kruispunt van aprioriese elemente en empiriese ervaring

Danie F.M. Strauss

8 bladsye
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Long-term changes in the algal composition of the Vaal River, South Africa � did the Lesotho Highlands Water Project play a role?

Sanet Janse van Vuuren, Annelie Swanepoel, Germarie van Zyl

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The influence of a large group teaching strategy on the self-regulated learning of tertiary mathematics learners

Annalie Roux

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Breeding behaviour and breeding success of feral pigeons in the Bloemfontein urban area

Pieter le Roux, Ordino Kok, Hennie Butler

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A theoretical reflection on the implications of the philosophy of technology for classroompedagogy

Piet Ankiewicz

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Pollen morphology of Prototulbaghia Vosa: A comparative palynological study of the Southern African Alliaceae.

Melissa Andriessen, Madeleen Struwig, Stefan J. Siebert

5 bladsye
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Die polsslag as diagnostiese hulpmiddel in die Grieks-Romeinse tye en die Middeleeue

Francois P. Retief, Louise Cilliers

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Survival of the scorpion Opistophthalmus pugnax (Scorpionidae) after exposure to a lethal dosage SO₂ gas.

Willie J. van Aardt

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A theoretical reflection on the implications of the philosophy of technology for teacher education.

Piet Ankiewicz

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Infection in the Graeco-Roman era with the emphasis on epidemic ilness.

Louise Cilliers, Francois P. Retief

4 bladsye
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Scoring multiple choice questions

John J. Barnard

7 bladsye
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Korttermynbedreigings vir varswater-Mollusca in die Olifantsrivier en enkele sytakke

Kenn� N. de Kock, Cornelius T. Wolmarans, Mathilde Kemp, Wietsche Roets

6 bladsye
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Hou metaalbesoedeling �n bedreiging in vir die voortbestaan van seesterre in Valsbaai, Suid-Afrika?

Adriaan J. Reinecke, Sophie A. Reinecke

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Original Research: Food

Die verband tussen voeding en die leesprestasie van graad 4-leerders in Suid-Afrika: Bevindinge van prePIRLS 2011

Surette van Staden

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Opinions of Life Sciences teachers on genetically modified foods

Johanna G. Ferreira

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The influence of sedentary and active work environments on wellness

Peet du Toit, Lee-Anne Naicker, Evangeline Nortje, Michael Kleynhans, Ron�l Ferreira, Gerda Gericke

6 bladsye
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Nutrition and physical well-being in the school curriculum: An intervention in a teachers� education programme

Josef J. De Beer, Ben-Erik Van Wyk

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Managing the National School Nutrition Programme in under-resourced schools in Limpopo � practice, successes and challenges

Eric Eberlein

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�n Vergelyking tussen die kardiostres-indekse van �n aktiewe en �n sedent�re populasie

Peet Du Toit, Paola Wood, Catherina C. Grant, Evangeline Nortje, Michael Kleynhans, Lizelle Fletcher, Pieter E. Kr�ger, Annie M. Joubert, Justin J. Kennedy, Ron�l Ferreira, Abert van Schoor, Fourie Joubert, Gerda Gericke

7 bladsye
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Determining a physical wellness indicator

Peet Du Toit, Lee-Anne Naicker, Evangeline Nortje, Michael Kleynhans, Ron�l Ferreira, Gerda Gericke

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Nutritional practices and needs of resource-constrained communities as seen through the eyes of primary school teachers

Ronel Ferreira, William J. Fraser, Karien Botha, Elzaan Cook, Peet J. du Toit, Gerda Gericke

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The response of school science to the challenge of food production in the 21st century

Lesley le Grange

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Original Research: Mathematics Education

Ondersoek na die gehalte en inhoud van vyf onderwysers se besinning oor hul onderrig van wiskunde

A. Barbara Posthuma, Jacobus G. Maree, Gerrit Stols

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Assessment in mathematics: The need for a positive approach

Jacobus G. Maree

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Maths4Stats: Opleiding vir onderwysers

Renette J. Blignaut, Retha Luus, Ronell Lombard, Abduraghiem Latief, Danelle Kotze

7 bladsye
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Critical food and nutrition-related issues in Life Sciences curricula for public South African schools

Rian De Villiers, William J. Fraser

9 bladsye
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The mid-adolescent�s achievement in maths: The role of emotional intelligence and study orientation

Petro Erasmus

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Reviewer Acknowledgements

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie Volume 32, Nommer 1

Redaksionele Kantoor

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Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie Volume 32, Nommer 1

Redaksionele Kantoor

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Conference Abstract: Studentesimposium in die Natuurwetenskappe 2011

A system for biometric authentication in online banking

Frans F. Blauw, Sebastiaan H. von Solms

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Investigating the use of proper orthogonal decomposition to determine intra-ocular pressure

Natasha Botha, Schalk Kok, Helen Inglis

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Measuring the effect of surface evaporation on the segregation process

Shaun Cronj�, W. D. Roos, R. E. Kroon, J. K.O. Asante

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Local knowledge of insect pests and the management thereof by small-scale rooibos tea farmers in the Cederberg Mountains, South Africa.

Samantha de la Fontaine, R. R. Malgas

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Photon degradation of Alq₃ powder.

Mart-Mari Duvenhage, O. M. Ntwaeaborwa, H. C. Swart

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Electronic properties of Mn(acac)3 complex: A cyclic voltammetry and computational chemistry study

Roxanne Freitag, Jeanet Conradie

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The combination of fisiological and tradisional user test techniques to evaluate social networks on various technological platforms

Francois Greeff, Lizette de Wet

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Synthesis of the C(1)�C(7) fragment of the HO-FC₁ and ISO-FC₁ fumonisin toxins

Chantal Hefti

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Influence of skin colour on laser penetration

Aletta E. Karsten

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A critical analysis of methods and procedures applied to satellite image interpretation by image analysts in the South African National Defence Force.

Ivan Henrico

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Studying possible platinum group element nanostructures in monosulphide systems by means of synthetic sulphide melts.

Bianca Kennedy

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Mineralogiese studie en vloeistofevolusie van die Noumas-pegmatiete, Noord-Kaap, Suid Afrika

Nequita MacDonald

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Arduino and MATLAB make scientific contact

Jacques Maritz

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Web service for thematic cartography

Victoria Rautenbach

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Bloemfontein se stedelike hitte-eiland gedurende die winter

Pieter Snyman, A. Stephen Steyn

1 bladsy
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�n Nie-kommutatiewe sigmamodel

Mauritz van den Worm

1 bladsy
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Die loging van moeilik reduseerbare kopererts: Die industri�le toepaslikheid van �n preoksidasiestap

Ryno van der Merwe

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Modelling the evolution of pulsar wind nebulae

Michael Vorster

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Entropic entanglement criteria for fermion systems

Claudia Zander

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Conference Abstract: Annual Congress of the Biological Sciences Division 2010

Histologieal assessment of the main visceral organs of Sternophysinx filaris and Sternophysinx calceola (Crustacea: Amphipoda)

B. Bester, P.E. de Lange-Jacobs

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In vitro effects of polyunsaturated fatty acids on osteoclast formation and bone resorption in RAW 264.7 murine monocytes

J.E.A. Boeyens, W-H. Ehua, M.E. Kruger, A.M. Joubert, M. Coetzee

1 page
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Massavrekte van Nylkrokodille (Crocodylus niloticus) in die Nasionale Kruger Wildtuin, Suid-Afrika

P.L. Booyens, H. Bouwman, R. Pieters, D. Pienaar, D. Govender

1 page
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Seleksie en karakterisering van rhizobiumrasse vir wortelknopvorming en voortplanting van weidingspeulgewasse

F.L. Bopape, A.I. Hassen

1 page
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�n Histologiesgebaseerde visgesondheidstudie op Clarias gariepinus in die Hartebeespoortdam met �n fokus op voortplanting

T.L. Botha, G.M. Pieterse, I.E.J. Barnhoorn, J.E. van Dyk, M.J. Marchand

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Scanning electron microscopic study of eriophyoid mite (Acari: Eriophyoidea) morphology.

C. Craemer

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The South African National Survey of Arachnida (SANSA): A wealth of information now available

A.S. Dippenaar-Schoeman, C. Haddad

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A patient journey of understanding � Navigating the avenues of assisted reproductive technologies: Three case studies

K. Ferreira, L. Grant, C. Huyser

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Sperm purification for the removal of bacteria, HIV-1 RNA and proviral DNA from human semen

J.M. Fourie, N.M. Loskutoff, C. Huyser

2 pages
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Soil microbial community dynamies in the Zeekoegat Conservation Agriculture trial, Roodeplaat

J. Habig

2 pages
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The association between body mass index and mood state

J.E. Harvey, E.O. Govender, P. Du Toit, R. Grant

1 page
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Prevention of infections in an assisted reproduction laboratory in a developing country

C. Huyser, J.M. Fourie

1 page
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Disturbed sleep and quality of life in female Fibromyalgia patients

F.M. Hoosen, E. Govender, H.P. Meyer

1 page
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Nematodes of the Bakwena Cave in Irene, South Africa

C. Jansen van Rensburg, A. Swart, W. Decraemer, W. Bert, J.F. Durand

2 pages
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Determining the algal composition along a pollution gradient in the Vaal River

L. Knoetze, N. Olivier, S. Janse van Vuuren

1 page
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Observations on the pathology of Ergasilus (Crustacea: Copepoda) from Lake Tanganyika on the gills of Lamprichtys tanganicanus

E. Kilian, A. Avenant-Oldewage

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Diversity-wonder of the world of Mushrooms

S.H. Koch

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Wellness testing on recruits to determine current state of wellbeing

J. Lawson, M. Kleynhans, E. Grobbelaar, P.J. du Toit

1 page
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A study of the endemic trapdoor spider genus Ctenolophus Purcell, 1904 (Araneae: Idiopidae) from southern Africa

R. Lyle, A. S. Dippenaar-Sehoeman

1 page
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Evaluation of a maximum entropy geographic distribution model: A case study of the Philoliche aethiopica species complex (Diptera: Tabanidae) in South Africa

P. Maharaj, B. Muller

2 pages
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The South African Plant-Parasitic Nematode Survey: A snap shot of the last 23 years

M. Marais, A. Swart

1 page
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The South African National Collection of Arachnida: Documenting South Africa�s Arachnida biodiversity.

P. Marais, A. S. Dippenaar-Sehoeman

1 page
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2-Methoxyestradiol-3,17,0,0-bis-sulfamate (2MEBM) induces two types of cell death in a cervical adenocarcinoma cell line

S. Marais, B. A. Stander, A. M. Joubert

1 page
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Sulphur dioxide contamination and drought lead to reduced PSII-activity and CO₂ assimilation in maize plants (Zea mays)

M. M. Minnaar, R. J. Strasser, G. H.J. Kruger

1 page
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Effect of ozone on photosynthesis and seed yield of sensitive (S156) and resistant (R123) Phaseolus vulgaris L. genotypes in open-top chambers

C. C.W. Scheepers, R. J. Strasser, G. H.J. Kruger

1 page
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A semi-quantitative histological assessment of selected organs from two Cichlid species from the Phongolo River, Kwazulu-Natal

A. Mooney, J. E. van Dyk, N. J. Smit

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In vitro evaluation of 2-methoxyestradiol-bis-sulphamate on cell growth, morphology, cell cycle progression and possible induction of types of cell death in an oesophageal carcinoma (sno) cell line

T. V. Mqoco, S. Marais, A. M. Joubert

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Does sexual selection explain the courtship song of field crickets (Gryllus bimaculatus)?

A. Prins, L. Verburgt, J. W.H. Ferguson

2 pages
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Invasive Harmonia axyridis (Coleoptera: Coccinellidae) in southern Africa

R. Stals

2 pages
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In vitro effects of a new and novel antimitotic compound in human breast adenocarcinoma metastatic epithelial cells

B. A. Stander, F. Joubert, A. M. Joubert

1 page
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In vitro evaluation of a novel antimitotic estradiol analog and dichloroacetic acid on breast adenocarcinoma and breast non-tumorigenic cells

X. X. Stander, A. Stander, F. Joubert, A. Joubert

1 page
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Comparison of the nine-point Beighton hypermobility score between males and females

H. C. Terblanche, M. Kleynhans, C. Janse van Rensburg, P. J. du Toit

1 page
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A new Globodera cyst nematode from South Africa (Tylenchida: Heteroderidae)

A. Swart, R. Knoetze, L. R. Tiedt

1 page
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Nematodes associated with the Natal long-fingered bat (Miniopterus natalensis) colony in Bakwena Cave, Gauteng

J-L. Szamosvari, J. F. Durand

1 page
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Biopsy techniques in fish health research

M. Tresise, J. E. van Dyk, L. Mokae, G. M. Pieterse

1 page
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Comparison of several parameters of sports vision tests between male and female recruits in the armed services

A. Tsotetsi, P. du Toit, P. Soma

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Tetranychus urticae and Tetranychus cinnabarinus: Synonymous or not?

E. A. Ueckermann, M. Navajas, P. Auger, A. Migeon, L. R. Tiedt, D. Yanar

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The use of a tissue culture line to determine the estrogen-active substances in municipal water of Potchefstroom in the North West Province

A. van Gessellen, R. Pieters

1 page
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Spider diversity of the Kalahari: Adaptation to survive

A. M. van den Berg, A. S. Dippenaar-Sehoeman

1 page
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The effect of Meloidogyne incognita (Nematoda), on lipoxygenase and peroxidase activity in soybean leaves

C. Venter, J. M. Berner, H. Fourie

1 page
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Evaluation of the cancer specificity of intracellular events caused by 2-methoxyestradiol-bis-sulphamate and aqueous Sutherlandia frutescens extracts

C.J.J. Vorster, A. M. Joubert

1 page
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Soil ecological risk assessments of selected South African soils and derivation of soil quality standards

J.J. Wahl, M. S. Maboeta, H. J.P. Eijsackers, L. van Rensburg

2 pages
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Water quality in the Mooi River system: A comparative study

D. H. Bomman, J. J.P. Lubbe, S. Barnard

1 page
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The influence of seed coatings on the activities of ?-amylase, lipoxygenase and peroxidase on the germination of gras seeds

M. Botha, J. M. Berner, M. Westcott, K. Kellner

1 page
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The identification and verification of optimal re-introduction sites for the southern ground hornbill in the Limpopo Province, South Africa

H. C. Coetzee, D. Cilliers, F. Jerling, L. van Rensburg

1 page
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Calvatia Fr. (Fungi, Lycoperdaceae) in southern Africa: 50 Years after Bottomley

J. C. Coetzee, A. E. van Wyk

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Decline in the photosynthetic capability of wheat plants after fumigation with SO₂ in open-top chambers

J. du Plessis, L. Henning, J. M. Berner

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Identification of phenolic acids in wheat plants after fumigation with SO₂ in open-top chambers (OTCs)

B. Durand, J. M. Berner

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Comparing the Cardio Stress Index of a training population with University students.

E. Henning, M. Kleynhans, N. de Villiers, P. J. du Toit

1 page
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Identification of a cyanoprocaryote using a poliphasic approach

E. Heystek, N. J.J. Niemand, S. Bamard

1 page
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Effects of cold stress and the recovery thereafter on soybean (Glycine max) plants

E. Kriel, M. de Beer, M. M. Minaar, C. C.W. Scheepers

1 page
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An evaluation of embryo characteristic score to select the most favorable embryo for transfer

P. Maharaj, C. Huyser

1 page
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The effect of sports vision exercises on the visual skills of university students

A. F. Mahomed, M. Kleynhans, C. Govender, P. J. du Toit

1 page
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The genus Helicotylenchus in the Grassland Biome of South Africa

M. Marais, A. Swart, A. S. Schoeman, L. R. Tiedt

1 page
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Comparing visual skills in sedentary and active work environments

L. Naicker, P. J. du Toit, M. Kleynhans, E. Kruger

1 page
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Ex situ monitoring of Frithia humilis Burgoyne: A control study for a translocation project

T. Orlekowsky, J. Viviers, E. Kruger, S.J. Siebert

1 page
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Structural damage caused by SO₂, on leaves of wheat (Triticum aestivum)

K. J. Radojevic, E. P.J. Kleynhans, A. Jordaan

1 page
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Termite eating spiders of the Cedarberg Wilderness Area (Araneae: Ammoxenidae).

S. L. Seshothela, A. S. Dippenaar-Schoeman, T. Bird

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Histology as a biomarker to determine the effect of pollution on two fish species from the Hartebeespoort Dam: Prelimanary results

N. N. Sikhakhane, J. C. van Dyk, G. M. Pieterse

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Induction of the phenylpropanoid pathway in wheat plants after fumigation with SO₂ in open-top chambers (OTCs)

L. Snyders, J. M. Berner

1 page
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The first arachnid survey from the North-West Province: The Kgaswane Mountain Reserve

A. van den Berg, A. S. Dippenaar-Schoeman, S. Mathebula

1 page
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In vitro cell signaling events of 2-methoxyestradiol-bis-sulphamate in a breast adenocarcinoma- and a non-tumorigenic breast epithelial cell line

M. H. Visagie, A. M. Joubert

1 page
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Nano-calciumphosphate generation with novel surface and chemical features for improvement of cell activity in bone repair and replacement

I. Wepener, W. Richter, A. Joubert

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