Very limited funds are available for expenditure on drugs in the public health sector in most African countries. For example, in Zimbabwe during the 1994–95 fiscal year, about US$5 was spent in the public sector on drugs and supplies per person. Ensuring the optimal use of these limited funds is one of the major challenges facing health managers. The study described in this paper aimed to evalu...

This definition is clearly legally motivated and does not support the discussion of technical issues. The number and classes of prohibited substances is very complex in human sports, where selected stimulants, narcotics, hormones, β2agonists, anti-oestrogenic agents and diuretics are covered. The situation becomes even more confusing if the term ‘doping’ is extended to animal (e.g. equestrian) ...

Ground Penetrating Radar (GPR) is an imaging technique that uses wide-band nonsinusoidal electromagnetic waves to produce high-resolution images of the subsurface typically from 0-–10 m depth. GPR is an effective tool for subsurface inspection and quality control on engineering construction projects. The survey method is rapid, nondestructive and noninvasive. GPR has been successfully applied t...

We introduce and study continuous fields of JB-algebras (which are real non-associate analogues of C*-algebras). In particular, we show that for the universal enveloping C*-algebra C∗ u (B) for the JB-algebra B defined by a continuous field of JB-algebras At, t ∈ T, on a locally compact space T there exists a decomposition of C∗ u (B) into a continuous field of C*-algebras C∗ u (At), t ∈ T, on ...

Order unit spaces with comparability and spectrality properties as introduced by Foulis are studied. We define continuous functional calculus for order the property Borel spectral spaces. Applying conditions of Alfsen Schultz, we characterize that JB-algebras. also prove a characterization Rickart JB-algebras those which every maximal associative subalgebra is monotone σ-complete, extending an ...