FROM May 12 to 14, Guyana will be hosting the second edition of the Caribbean Schoolboys and Juniors Boxing Championships, and according to sources, plans for the staging of the event are well on stream.The event will be staged at the National Gymnasium, Mandela Avenue and 12 countries, including Guyana, are expected to participate in the event, which is the brainchild of Guyana Boxing Association (GBA) president Steve Ninvalle.According to Ninvalle, Trinidad and Tobago, Suriname, Jamaica and St Lucia have confirmed their participation for the three-night tournament and he (Ninvalle) is confident that Barbados, Cayman Islands, Grenada and Bahamas will each send a team to Guyana.Ninvalle said the French-speaking nations of Guadeloupe, Martinique and French Guiana have signalled their intentions to also send representative teams.According to Ninvalle, it is expected that the programme will see approximately 100 boxers and officials arrive in Guyana for the tournament.The source said the GBA is expected to encamp a team of boxers in the coming week after the successful staging of the Pepsi Under-16 tournament, which was held at the Andrew `Six Head’ Lewis Gym in Albouystown.The Caribbean Schoolboys and Juniors tournament was first staged here last year.
An intercomparison of zenith-sky UV-visible spectrometers was held at Camborne, UK, for 2 weeks in September 1994. Eleven instruments participated, from nine different European institutes which were involved with the Second European Stratospheric Arctic and Mid-latitude Experiment (SESAME) campaign. Four instruments were of the Systeme d’Analyse d’Observations Zénithales (SAOZ) type, while the rest were particular to the institutes involved. The results showed that the SAOZ instruments were consistent to within 3% (10 DU) for ozone and 5% for NO2. For ozone the results from these instruments agreed well with total ozone measurements by Dobson and Brewer spectrophotometers and integrated ozonesondes when the air mass factors for the SAOZ were calculated using the ozonesonde profiles. Differences of up to 10% in ozone and 30% in NO2 were found between different instruments. In some cases these differences are attributable to the different absorption cross sections used in the analysis of the spectra, but other discrepancies remain to be investigated. A prominent source of error identified in the campaign was uncertainty in the derivation of the amount of absorber in the reference spectrum, which can contribute an error of up to 3% (10 DU) in ozone and 1.5×1014 molecules cm−2 in NO2.