English: Synthetic routes to prepare new Rh(I)-β-diketonate complexes [Rh(FcCOCHCOR)(CO)2] and [Rh(FcCOCHCOR)(CO)(PPh3)] with Fc = ferrocenyl and R = Fc, C6H5, CH3 and CF3 have been developed and optimized. Optimized ...

Monogenic resistance in wheat (Triticum aestivum L.) to leaf rust, caused by Puccinia recondita Rob. ex. Desm. f. sp. tritici, has generally not been durable. One strategy of attaining durable resistance to rust diseases ...

English: The objectives of this study were: (i) to develop a near real-time crop-specific drought monitoring system that delimits drought stricken areas and assesses the severity of droughts in these areas, (ii) to ...

English: Research conducted in this thesis explores the role that Phytophthora and Pythium species play in citrus and eucalypt root rot in South Africa. The first chapter presents an extensive literature review with ...

English: Berchemia zeyheri is known for its unique red heartwood, a property that was probably responsible for the first phytochemical investigation into the flavonoid content of this tree. The heartwood contains a unique ...

English: The ability to preserve microorganisms can be considered a major . biological achievement. Of special importance is the understanding of the principles of culture preservation with minimal occurrence of contamination, ...

English: In this study the clasts of the Big Pebble Marker (BPM) in the Aandenk Formation and the basal conglomerate of the Rosedale Member (ROM) in the Eldorado Formation, in the Welkom Goldfield, were investigated. ...

English: The objective of this study was to evaluate four cryopreservation techniques for in vitro produced bovine embryos, and to select the best method for practical application. The cryopreservation methods investigated ...

Abstract not available

English: Hydrolysis of esters by means of hydrolases such as proteases (Jones and Beck, 1976), lipases (Santiello et al., 1993) and esterases (Boland et al., 1991) has become a well established method for the resolution ...