1,721,010 research outputs found
Ricoveri Ospedalieri per cause respiratorie nei bambini e monossido di carbonio: approccio con analisi temporali e case-crossover
No full textUrban air pollution and children respiratory hospital admissions in Pisa (Italy) a time series and a case-crossover approach
No full textObjectives: we evaluated the association of daily pollutants’ concentrations with daily hospital admissions for respiratory causes in children residents in Pisa during 1998-2002. We compared the results obtained with two methods of statistical analyses. A total of 657 children under ten years and admitted to local hospitals for respiratory diseases (ICD 9: 460-469, 480- 519) were included in the study. Design: both time-series and case-crossover analysis were applied, controlling for temperature, holidays, influenza epidemics, rain and relative humidity. Pollutants’ effects are expressed as percentage increase (and 95% CI) of hospital admissions for an increase of 10 μg/m3 of pollutants (1 mg/m3 for CO). Results: with both analyses, children’s hospital admissions for respiratory conditions were significantly associated to increasing daily levels of PM10 and CO at different time lags, while no association was found for NO2 and O3. In the case-crossover analysis, for a daily increase of 10 μg/m3 in PM10, a significant increment of 8.5% (CI 95% 0.02; 17.6) in children respiratory admissions was observed at lag 0-3. Results were stronger for males and during the warm season. A 1 mg/m3 increment in daily CO levels was associated with an increase of respiratory admissions at lag 0 (20.2%, CI 95% 5.3; 37.2) and at all cumulative lags: the maximum value was observed at lag 0-3 (32.6%, CI 95%8.3; 62.2). Time series analyses provides similar results, although the estimates were lower than with the other method, in terms of percentage increment and length of confidence intervals. Conclusions: this study indicates adverse effects of air pollution on respiratory health of children living in urban environment. The results of both analyses were consistent
Determinazione dell'attività proliferativa (3H-timidina labeling index, 3H-TdR LI) nei carcinomi della cervice uterina.
No full textMortalità nei comuni della Provincia di Brindisi,1981-2001
No full textAbstract Introduction: Brindisi is a town on the South coast of the Adriatic sea, where many sources of air pollutants are located nearby the urban area. A part from the airport and the harbour, mainly for passenger traffic to Greece, a wide industrial area is present (petrochemical, power plants, chemical, pharmaceutical, metallurgical, manufacturing). In seven municipalities, illegal dumps have been found. South west of Brindisi is the province of Taranto, whose industrial area includes steels factory, a refinery and a cement factory. In both provinces, an area at «high risk of environmental crisis » has been identified by the Italian Ministry of Environment. In the Brindisi area, mortality from all causes, cancers and respiratory diseases. in 1990-1994 was found to be in excess Objectives: to estimate mortality among residents in the twenty municipalities of the province aggregated in four geographic areas: the one at «high risk» including the main town, and the areas located North. West and South of the Brindisi «high risk» area. Design: descriptive geographical study. 50 e&panno 32 (1) gennaio-febbraio 2008 Setting: mortality analysis by gender, specific causes of death and two ten-year periods between 1981 and 2001. Standardised mortality ratios (Puglia region as referent population) and directly as well as age-standardized rates (ref. European population) have been computed. Main outcome measures: mortality from all causes and fromr forty selected causes. Results: about 3.200 annual deaths have occurred in the province. Results for the high risk area confirm previous analyses while excesses in the other areas have appeared. A few municipalities, requiring a deeper investigation have been identified. Such excesses refer to mortality due to all causes, all cancers, stomach and lung cancers, respiratory and ischemic diseases. Conclusions: this study confirms excesses in the high risk areas and found mortality excesses in other municipality both among males and females. The results suggest to further investigate mortality both in the main town and in the small municipalities where illegal dump have been found and also in those located on the border with Taranto province
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
