Now showing items 1-10 of 30
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 ...
Die objektiewe evaluering van geurstowwe
(Stellenbosch : Stellenbosch University, 1967-03)
ENGLISH ABSTRACT: no abstract available
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 gas analysis : quantitative trapping and thermal desorption of volatiles using fused-silica open tubular capillary traps
A system has been devised with which volatiles can be effectively trapped from headspace gas samples at relatively high flow-rates. Material is trapped in fused-silica capillary traps, 1 m in length, and coated with either ...
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 ...
Mammalian pheromone studies - III : (E,E)-7,11,15-trimethyl-3methylenehexa-deca-1,6,10,14-tetraene, a new diterpene analogue of ß-farnesene from the dorsal gland of the springbok, Antidorcas marsupialis
The secretions produced by the cutaneous glands of mammals are generally considered to be involved in conspecific chemical communication, acting as pheromones. From a review of mammalian chemical ecology it appears that, ...
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 ...