Browsing Natural and Agricultural Sciences by Title
Now showing items 711-730 of 2707
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Die interpretasie van reëlmatighede in kerndeursnitte vir neutrone by intermediêre en hoe energïee
(North-West University (South Africa), 1964)"No abstract" -
Die invloed van 'n mariene omgewing op die oorlewing van tipiese fekale bakterieë
(North-West University (South Africa), 1972)"Abstract not copied" -
Die invloed van aldikarb op sommige metaboliese prosesse in die loofblare vanNicotiana tabacum L. cv. T1 33
(North-West University (South Africa), 1983)The aim of this study was to determine the influence of aldicarb on some metabolic processes in the developing leaves of Nicotiana tabacwn L. cv. TL 33. Quantitative determinations were made over a period of sixty days of ... -
Die invloed van avitaminose A op die histologiese struktuur van die endokriene-kliere by jong albino-rotte, met spesiale verwysing na die thymus
(North-West University (South Africa), 1951)"No abstract" -
Die invloed van droogtetoestande op die stikstofmetabolisme van twee mielielyne
(North-West University (South Africa), 1978)Two maize lines, A281 and G556DT, were investigated to ascertain the effect of drought conditions on the following aspects of the water relations and nitrogen metabolism: relative percentage water deficit, total water ... -
Die invloed van enkele faktore op die terugdiffusie van geneesmiddels in 'n membraan in
(North-West University (South Africa), 1979)The objectives with this study were to present solutions to several problems related to drug diffusion through membranes, with spesific reference to the back-diffusion problem encountered by Dürrheim (1977) in his studies ... -
Die invloed van fenoliese verbindings op sommige ensieme en metaboliese prosesse in loofblare van Protea nerlifolia R. Br.
(North-West University (South Africa), 1980)The aim of this study was to determine the influence of phenolic compounds on selected enzymes and metabolic processes in the leaves of Protea neriifolia R. Br. over a period of 10 days after cutting the inflorescences. ... -
Die invloed van inoefening op die hormonale sekresie by postkoronêre persone met spesifieke verwysing na insulien, groeihormoon en kortisol
(North-West University (South Africa), 1978)Physical activity has been used at an increasing rate with worldwide recognition as a practical method of rehabilitation for persons who have survived an episode of myocardial infarction. Research was and is still ... -
Die invloed van konsentrasiespanning op die kardiovaskulêre sisteem van die mens
(North-West University (South Africa), 1978)Persons in senior professions with a lot of responsibilities have a high incidence of cardiovascular diseases. Little is known about the effect of mental stress on the cardiovascular system. With this research is found ... -
Die invloed van kopersulfaat op die ioon- en waterbalans van Bulinus [Bulinus] Tropicus [Krauss]
(North-West University (South Africa), 1976)A quantitive study of the influence of coppersulphate on the ion and water balance of Bulinus (Bulinus) tropicus (Krauss) has been undertaken. Laboratory reared snails and snails collected in the field have been used ... -
Die invloed van oefening op enkele aspekte van die fisiologiese en psigologiese aanpassing van die mens in Antarktika
(North-West University (South Africa), 1971)"Abstract not copied" -
Die invloed van preservering op sommige metaboliese prosesse in verouderende swaardleliebloeiwyses
(North-West University (South Africa), 1985)Pulsing of Gladiolushybrida (L. )(cv. Striking Horn) inflorescences for four hours with preservatives containing silverthiosulphate (STS), 8-HQC or 8-HQ-potassiumbilsulphate, citrate or aluminiumsulphate and/or sucrose, ... -
Die invloed van temperatuur en vog op die lewensiklus van 'n spesie van die mytgenus Caloglyphus [Acari]
(North-West University (South Africa), 1975)This study was undertaken to determine the optimum conditions for the survival of Caloglyphus sp. with regard to air temperature and groundnut moisture content. The values of the temperatures and moisture contents selected ... -
Die invloed van uintjie- en kafferboonworteluitskeidings op die groei en chemiese samestelling van 'n aantal kultuurgewasse
(North-West University (South Africa), 1965)"Abstract not copied" -
Die invloed van wateroplosbare stowwe op die eierproduksie van die varswaterslakke Lymnaea Natalensis en Bulinus Tropicus
(North-West University (South Africa), 1972)"Abstract not copied" -
Die lewensloop en vogbehoeftes van die oriëntaalse komposwurm, Perionyx excavatus (Oligochaeta)
(North-West University (South Africa), 1990)THE LIFE CYCLE AND MOISTURE REQUIREMENTS OF THE ORIENTAL COMPOST WORM, PERIONYX EXCAVATUS (OLIGOCHAETA) The oriental compost worm, Perionyx excavatus, can potentially be implemented as a waste decomposer and a protein ... -
Die metatesepolimerisasie van alkyne
(Potchefstroom University for Christian Higher Education, 1998)The alkyne, phenylacetylene was polymerized in the presence of molybdenehexacarbonyl and different phenolic cocatalysts via catalytic polymerization. The reaction was monitored using a gaschromatographic method. The ... -
Die meting van lugbesoedeling deur stof by 'n misstofnywerheid
(North-West University (South Africa), 1970)The extent of air pollution by dust was determined at the granulation plant and the mill section of a fertilizer industry. During all the tests at the granulation plant superphosphatic fertilizers were produced. The ... -
Die modulering van proteïensintese in die rotuterus deur 17 beta-estradiol
(North-West University (South Africa), 1980)"No abstract" -
Die morfologie en ultrastruktuur van die blaartrigome van Nicotiana tabacum L.
(North-West University (South Africa), 1990)Light- and electron microscopical studies were conducted on the leaf trichomes of a few Nicotiana tabacum L. cultivars to determine whether a correlation exits between the trichome complement and the aromatic quality ...