Anthropogenic and natural variability in the composition of sedimentary organic matter of the urbanised coastal zone of Montevideo (Río de la Plata).

This study is aimed to identify the different sources of sedimentary organic matter (SOM) within Montevideo coastal zone (MCZ). To this end δ13C, δ15N and C/N ratio were analysed in surface sediments and a sediment core. Sediment core analysis showed that until ~1950CE SOM was mainly marine, observing a shift towards lower δ13C in recent sediments, evidencing an estuarine composition. This trend was associated to the climatic variability, which exerted a major influence on the SOM composition, leading to an increased input of terrigenous material and associated anthropogenic contaminants. Surface sediments collected during different El Niño South Oscillation (ENSO) phases did not show inter-annual variability in SOM composition, which was mainly marine in both eastern and western region of MCZ and estuarine in Montevideo Bay. This spatial pattern provides new insights on the dynamics and factors affecting organic matter sources available for primary consumers along the study region.

[Apparent life threatening event (ALTE): the role of the training in the follow-up]. / Evento apparentemente pericoloso per la vita (ALTE): il ruolo della formazione nel follow-up.

AIM: The aim of this study was to give a support to the parents of the patients with apparent life threatening event (ALTE), to learn a correct management outside the protective environment of the hospital and a prevention such events. METHODS: This was the 33rd edition of a training course called "Course of first aid and prevention of the accidents in infants", in which the recommendations of the Italian cardiopulmonary resuscitation's guidelines are treated. The course comprehended a short frontal lesson, a practice training and the compilation of a test to express one's satisfaction about the received training, using a points assessment from 1 to 10. RESULTS: The course included 385 participants (including any kind of person who may be in contact with infants) and 361 questionnaires were returned. Critical parameters were the scheme of teaching, the adequacy of contents, the teachers' technical and behavioral abilities, the adequacy of time and the communicative capacity. The learners demonstrated pleasure in variable percentages from 98% to 100%. The 79% of the learners felt the necessity to have some training again later on. CONCLUSION: Our positive experience allowed us to reflect about three concepts that we considered essential: communication, training and prevention. In fact, we think that prevention is infinitely potentiated from training and communication is its inalienable instrument.