PubMed · 11968694
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M Douglas. Not all plain sailing.. https://pubmed.ncbi.nlm.nih.gov/11968694/
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Ozone uptake was studied in a pine forest in Tenerife, Canary Islands, an ecotone with strong seasonal changes in climate. Ambient ozone concentration showed a pronounced seasonal course with high concentrations during the dry and warm period and low concentrations during the wet and cold season. Ozone uptake by contrast showed no clear seasonal trend. This is because canopy conductance significantly decreased with soil water availability and vapour pressure deficit. Mean daily ozone uptake averaged 1.9 nmol m(-2) s(-1) during the wet and cold season, and 1.5 nmol m(-2) s(-1) during the warm and dry period. The corresponding daily mean ambient ozone concentrations were 42 and 51 nl l(-1), respectively. Thus we conclude that in Mediterranean type forest ecosystems the flux based approach is more capable for risk assessment than an external, concentration based approach.
OBJECTIVE: The population of the Faroe Islands in the North Atlantic Ocean is likely to have the same ancestry as the Icelandic population. An Icelandic study on Panic Disorder has found some evidence for a loci on chromosome 9. METHODS: On the Faroe Islands we have an ongoing genetic project concerning panic disorder among other psychiatric disorders. We searched for shared alleles and haplotypes in distantly related cases from the isolated and recently found population of the Faroe Islands, using 26 more or less evenly distributed microsatellite markers on chromosome 9, with emphasis on the candidate region identified in the Icelandic study. RESULTS: We have not been able to replicate the Icelandic results. Owing to the study design and sample size, we would not be able to detect areas with small impact.
INTRODUCTION: Nosocomial infection is a frequent complication in neonatal intensive care units (NICUs) attending patients who require lengthy hospitalization and frequent invasive techniques. PATIENTS AND METHODS: This study is part of a prospective surveillance program for nosocomial infection in Spain. All patients admitted to NICUs between June 1999 and March 2005 were observed. CDC criteria were used as the standard definition for nosocomial infection. RESULTS: A total of 1236 neonates (58% male) were admitted during the surveillance period, involving 19,420 days in the NICU. The average birth weight was 1947.6 +/- 1009.5 g and average gestational age was 32.9 +/- 5.4 weeks. The most frequent associated pathology was respiratory distress (23.06%). A total of 316 nosocomial infections were diagnosed in 226 neonates, 76.7% affecting premature neonates (< 1500 g). The most frequent location was bacteremia (56.3%), and there was a predominance of coagulase-negative staphylococci (46.05%). Gram-negative microorganisms were isolated in 32.1% of the cases (Escherichia coli and Pseudomonas aeruginosa were the most frequent pathogens). Overall incidence of nosocomial infection was 25.6%. Overall mortality was 6.6%, with higher mortality in the group with nosocomial infections (8.7%). CONCLUSIONS: Nosocomial infection rates are acceptable, with a typical epidemiological pattern for these units. Presence of a central catheter increased the risk. A program to promote proper hand washing should be considered. We do not recommend a continuing surveillance strategy in these units.