Suchergebnisse

Includes abstract. ; Includes bibliographical references (leaves 29-32). ; This paper examines the relationship between tariffs and antidumping (AD) within the political economy of trade protection in South Africa. Using graphs, tables, panel data regressions and an application of the Grossman-Helpman model I build an understanding of the relationship between tariffs and AD. Findings are that AD has increased with the decrease in tariffs. However this relationship is not a clear-cut substitution from one trade remedy to another.

Good public health depends on regular monitoring of water quality as faecal contamination is a serious problem due to the potential for contracting disease. Bacterial contamination in water is measured using indicator organisms, notably Escherichia coli and Enterococci which are used as primary indicators of contamination in fresh and marine water quality, respectively, rather than the total coliforms present. Although most E. coli and Enterococci strains cause only mild infections, their presence is indicative of the potential presence of other more pathogenic organisms which are a danger to human health. The acceptable levels of indicator organisms are defined in legislation and are set for drinking, river, well and marine water. This chapter will consider current gold standard culture methods of analysis for E. coli and compare them with molecular DNA procedures. Established culture methods use β‐D-glucuronidase to identify E. coli and β‐D-galactosidase to detect coliforms. Emphasis will be placed on newer procedures that can be used onsite supported by laboratory procedures used for confirmation. Available rapid fluorimetric procedures which have been developed for use in the field, based on the assay of β‐D-glucuronidase, will be discussed. The rapid advances in procedures using a molecular approach will be considered and compared with the more established methods for determining E. coli in water. It is essential that all these methods should be quantitative in order to comply with legal norms, and in this regard, the potential involvement of biosensor technology will be of great value in successfully transferring laboratory procedures to the field.

Since the initial meeting of the U.S.-Soviet Symposium on Contemporary Problems of sub-Saharan Africa in 1982 considerable change has occurred in the relationship between the U.S. and the U.S.S.R. in regard to African issues, as well as in the relationship between the American and Soviet specialists on Africa. Apprehension was the quality that infused the initial meeting in November of 1982 of the first-ever formal exchange of views between Soviet and American Africanists. Both American and Soviet participants wondered whether the discussions would be substantive, scholarly, and constructive. Conversly, would their opposite numbers simply repeat official government positions, make debating points rather than engaging in discussion, and adopt an ideological and baiting posture? In other words, "would the Symposium simply turn into another forum for the exchange of "cold war rhetoric?