1,720,969 research outputs found
Analisi di una casistica ospedaliera di neoplasie professionali
No full textFinalità: Verificare la frequenza con la quale le neoplasie professionali sono diagnosticate nell’attuale pratica ospedaliera e acquisire informazioni, utilizzabili in ambito preventivo, sulle loro caratteristiche eziologiche e anatomo-cliniche. Pazienti e metodi: Sono stati individuati i tumori segnalati dal nostro Istituto all’INAIL come professionali nel quinquennio 2001-2005. Dalla documentazione clinica dei singoli casi sono stati quindi ricavati i dati relativi a: sede d’insorgenza, tipo istologico, agenti causali, settori lavorativi e mansioni a rischio, durata dell’esposizione, periodo di latenza, abitudine al fumo, eventuali patologie concomitanti. Risultati: Nel periodo considerato, sono stati diagnosticati 16 tumori occupazionali in 15 soggetti maschi, in prevalenza fumatori o ex-fumatori, tutti in seguito deceduti. Tale numero è inferiore a quanto prevedibile in base ad alcune stime epidemiologiche. La casistica comprende 8 casi di carcinoma polmonare, 6 di mesotelioma pleurico maligno e 2 di urotelioma vescicale. L’amianto (tumori respiratori) è risultato l’agente eziologico più frequentemente implicato, seguito dagli idrocarburi policiclici aromatici (carcinomi polmonari e vescicali) e dalla silice cristallina (due carcinomi polmonari, di cui uno insorto in un minatore già affetto da silicosi). Edili (6 casi) e metalmeccanici (4 pazienti) sono stati i lavoratori più colpiti. I tumori sono insorti in seguito ad esposizioni reiterate negli anni e (tranne che in due soggetti) dopo lunghi periodi di latenza dall’allontanamento dal rischio. Conclusioni: Le neoplasie professionali sono probabilmente sottostimate nella pratica clinica. Un’accurata anamnesi lavorativa è fondamentale per la loro diagnosi eziologica. L’apparato respiratorio e la vescica urinaria continuano a essere bersagli preferenziali per l’oncogenesi occupazionale. L’edilizia e l’industria metalmeccanica sono le attività produttive a rischio maggiore, per le quali maggiormente si impongono migliori misure preventive. In particolare, sono necessari programmi di sorveglianza sanitaria per i soggetti con pregressa esposizione ad amianto
Ocular argyrosis in a silver craftsman
Full text linkThis case report highlights the hazard of silver crafting without adequate eye protection, and indicates that occupational ocular argyrosis may still be observed in clinical practice today. In such cases, occupational anamnesis, ophthalmologic examination, confocal corneal biomicroscopy, and histopathology will allow the correct diagnosis that, in turn, is important for work-related medico-legal issues
[Fractional exhaled nitric oxide measurement during specific inhalation challenge tests]
No full textThe aim of the work is to evaluate the usefulness of the evaluation of the fractional exhaled nitric oxide (FeNO) in patients with suspected occupational asthma (OA) during the specific inhalation challenge (SIC). We evaluated 5 subjects with OA confirmed by SIC and 7 subjects with negative SIC result. In subjects with confirmed OA, but not in SIC negative subjects, a significant increase in FeNO values has been reported. In conclusion, FeNO measurement may be considered a useful tollfor the evaluation of bronchial inflammation during the SIC
Elettrocardiografia da sforzo nella sorveglianza sanitaria di lavoratori con impegnativo dispendio energetico
No full textTo evaluate the opportunity of exercise electrocardiography (ECG) in the sanitary surveillance of workers with physical strain, we estimated the energy consumption of the duties of 22 electrical workers (males; age: 35-56 years). They subsequently underwent Treadmill exercise ECG, determining for each worker the maximal METs (multiples of basal metabolism) and the critical potency (P(CRIT)). In one subject, myocardial ischemia arose 9 minutes after the beginning of the test. The others interrupted the test after 7-13 minutes for tiring; 5 of them showed ventricular extra systoles, paired or isolated. Twelve subjects presented arterial hypertension, at rest and/or during exercise. Ergonomic analysis revealed that the occupational duties were between 1.5 and 8.0 METs. The energy consumption of the job on the whole was 4-6 METs (medium intensity). The maximal METs reached by the examined subjects were between 8.8 and 15.6; however, only 11 workers went reassuringly over the 4 METs required by duty analysis at P(CRIT). One subject was declared unfit for the job, and a judgement of partial idoneity was expressed for 3 workers. Preventive and therapeutic indications were given to 12 subjects. Aerobic training was suggested to 10 workers. The study indicates that an ergonomic evaluation is advisable for the most energy consuming occupational duties. In such cases, the sanitary surveillance should include a cardiologic assessment with exercise ECG, reproducing the physical strain of the specific job
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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