Now showing items 1-10 of 24
Pheromones of the Scarabaeinae, II : composition of the pheromone disseminating carrier material secreted by male dung beetles of the genus Kheper
(Dieterich'sche Verlagsbuchhandlung, Wiesbaden (now Mainz), 1990-01)
Gel electrophoresis of the white flocculent pheromone disseminating secretions produced by males of the three dung beetle species, Kheper lumarcki, K. nigroacneus and K. subaeneus, revealed that three different proteins ...
The processes and factors controlling air filtration by impregnated activated carbon and its application in environmental pollution
(Stellenbosch : Stellenbosch University, 1998-01)
ENGLISH SUMMARY: Environmental issues are attracting ever-increasing attention at local, national and international levels. Part of the problem facing society and government alike is the choice of strategies that maintain ...
Decoy systems simulating jet aircraft plume emissions and strategies for suppression of emissions from missile plumes
(Stellenbosch : Stellenbosch University, 1997-03)
ENGLISH ABSTRACT: This study covers the development of technology to be able to manufacture a flare that can lure a modem state-of-the-art heat-seeking missile. Consequently it was necessary to characterize the exhaust ...
Semiochemicals of the Scarabaeinae, III : identification of the attractant for the dung beetle Pachylomerus femoralis in the fruit of the Spineless monkey orange tree, Strychnos madagascariensis
(Dieterich'sche Verlagsbuchhandlung, Wiesbaden (now Mainz), 1991-04)
Following the observation that the non-ball-rolling dung beetle Pachylomerus femoralis (Kirby) rolled the flesh-covered seeds from the fruit of the spineless monkey orange tree, Strychnos madagascariensis Poiret, an ...
Mammalian exocrine secretions : X. Constituents of preorbital secretion of grysbok, Raphicerus melanotis
(Springer Verlag, 1996-04)
Using electron impact and chemical ionization mass spectrometry with methane and nitric oxide as reactant gases in conjunction with mass spectral analysis of the dimethyl disulfide derivatives of unsaturated constituents, ...
Headspace analysis : a novel method for the production of capillary traps with ultra-thick stationary phase layers
(John Wiley & Sons, 1990-11)
The development by Grab and Habaich of a headspace analytical technique which organic volatiles are trapped in short capillary traps coated with a layer of fine activated charcoal particles (COTs) or a layer of a suitable ...
Capillary gas chromatography in the identification of semiochemicals
(InCom publishers, 1997)
The role of gas chromatography and its ancillary techniques in the identification of pheromones and other semiochemicals over the last 30 years is discussed, using some examples from research on chemical communication in ...
Giant molecules : the marriage of the university with the community
(Stellenbosch : University of Stellenbosch, 1997)
Inaugural address delivered by Prof Ron Sanderson during 1997, Stellenbosch University.
The effect of iodo alkyl chain transfer agents on the seeded emulsion homo- and co-polimerisation of styrene and butyl acrylate
(Stellenbosch : Stellenbosch University, 1999)
ENGLISH ABSTRACT: A free-radical polymerisation process, which has characteristics of a living polymerisation system, as it is capable of producing polymers of pre-determined molecular masses with a narrow molecular ...
Mammalian exocrine secretions XI. Constituents of the preorbital secretion of klipspringer, Oreotragus oreotragus
(Springer Verlag, 1997-10)
The ketones 3-pentanone, 4-methyl-2-pentanone, 5-methyl-3-hexanone, 4-methyl-3-hexanone, and the esters ethyl propaneate, 2-methylpropyl acetate, ethyl 3-methylbutanoate, and 2-methylpropyl propanoate were identified as ...