86,602 research outputs found
ANALYTICAL EVALUATION AND EXPERIMENTAL TESTS OF JUMP IN SOME LOW-SPEED CAM-FOLLOWER SYSTEMS
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Crescita via CVD di nanofili di silicio su substrati di acciaio funzionalizzati con oro, argento e rame
No full textIn questo rapporto si presenta uno studio sulla sintesi e caratterizzazione di materiali nanostrutturati nella forma di strutture nanometriche filiformi di silicio da utilizzare come materiali anodici in batterie litio-ione. In particolare si presentano dei campioni ottenuti mediante la tecnica di Chemical Vapor Deposition (CVD) utilizzando come metallo catalizzatore, oro, argento e rame.This report shows a study on the synthesis and characterization of nanostructured materials in the form of silicon nanowires for applications in lithium-ion batteries. In particular, the growth by Chemical Vapor Deposition (CVD) of Si nanowires on stainless steel substrates by using gold, silver and copper as the catalyst will be reported
Respiratory sinus arrhythmia magnitude quantification as a potential marker of stress and pain in cows and sheep
No full textRespiratory sinus arrhythmia (RSA) provides a quantitative evaluation of ‘vagal tone’ and may be used for pain and stress assessment in livestock. The aim was to quantify the magnitude of RSA in cows and sheep. In 7 cows and 4 sheep standing at rest we measured the 3-lead electrocardiogram (ECG) together with the pneumogram, to identify inspiration and expiration. For each breath, RSA was the difference in instantaneous heart rate (HR) between the inspiratory peak and the expiratory trough, in percent of mean HR. The resting breathing rates (28 ± 2 and 32 ± 5 breaths/min in cows and sheep, respectively) were about twice those expected for similar size non-ruminants, in conformity with previous reports. Both species had long-period (>15 s) HR fluctuations. The average values of RSA, 1.4 ± 0.2% in cows and 7.8 ± 3.1 in sheep, were lower than those previously computed by an identical approach in humans (12%), dogs (40%) and horses (9%). In conclusion, by breath-by-breath analysis of instantaneous HR we measured RSA in both cows and sheep. Results from the present study represent a preliminary step in assessing whether or not RSA could be used as a biomarker for stress or pain in ruminants
Characterisation of candidemia in patients with recent surgery: A 7-year experience
No full textCandidemia can complicate major surgical procedures. However, literature data are scanty on this topic. In this study, we evaluated the epidemiology, clinical and microbiologic characteristics and outcome of candidemia in adult patients with recent surgery hospitalised in a single University Hospital in Central Italy from 2010 to 2016. Of the 304 episodes of candidemia, 160 (53%) occurred in surgical patients (SPs) while the remaining 144 (47%) in patients without history of recent surgery (non-SPs). Although either underlying chronic comorbidities (ie haematological malignancies, neurological and gastrointestinal diseases) or acute complications (ie pneumonia and septic shock) were less likely to occur in SPs than in non-SPs, 30-day mortality did not differ between groups being 38% and 42%, respectively. The specific risk factors significantly more common in SPs who died within 30 days were as follows: male gender, older age, being hospitalised in ICU rather than in other wards, having a higher Charlson's score, undergoing previous invasive procedures, haemodialysis, the presence of pneumonia, septic shock, acute kidney failure and the type of surgery. In particular, either gastrointestinal or cardiovascular surgeries were characterised by the highest mortality rates. Multivariate analysis showed that the occurrence of septic shock (HR 10.3131 [CI95% 1.176-90.466; P = .035] and ICU stay (HR 2.016 [CI95% 1.178-3.448; P = .011] was independently associated with higher mortality in SPs. Overall, these data show that candidemia in SPs is characterised by significant mortality and distinctive features
Candidemia in Internal Medicine: Facing the New Challenge
No full textCandidemia is an alarming problem in critically ill patients including those admitted in Internal Medicine Wards (IMWs). Here, we analyzed all cases of candidemia in adult patients hospitalized over nine years (2010–2018) in IMWs of a 980-bedded University Hospital of Ancona, Italy. During the study period, 218/505 (43%) episodes of candidemia occurred in IMWs patients. The cumulative incidence was 2.5/1000 hospital admission and increased significantly over time (p = 0.013). Patients were predominantly male, with a median age of 68 years. Cardiovascular diseases and solid tumors were the most frequent comorbidities. Candida albicans accounted for 51% of the cases, followed by C. parapsilosis (25%), C. tropicalis (9%) and C. glabrata (7%). Thirty-day mortality was 28% and did not increased significantly over time. By multivariate logistic regression analysis, the presence of neutropenia (OR 7.247 [CI95% 1,368–38,400; p = 0.020]), pneumonia (OR 2.323 [CI95% 1,105–4,884; p = 0.026]), and being infected with C. albicans (OR 2.642 [95% CI 1,223–5,708; p = 0.013) emerged as independent predictors of mortality. The type of antifungal therapy did not influence the outcome. Overall, these data indicate that patients admitted to IMWs are increasingly at higher risk of developing candidemia. Mortality rate remains high and significantly associated with both microbiologic- and host-related factors
Variations on the Author
No full text“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
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
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