323,019 research outputs found
Bonaventura Luchi
No full textAppartenente all’Ordine dei Frati Minori Conventuali, Bonaventura Luchi fu docente dell’Università di Padova per quasi un cinquantennio, dal 1737 al 1785, prima sulla cattedra di Metafisica “in via Scoti” e successivamente su quella di Sacra Scrittura. Fedele ai dettati di Aristotele e di Scoto, Luchi fu un irriducibile avversario del pensiero filosofico che si era sviluppato in sinergia con la rivoluzione scientifica dell’età moderna
Numerical Heat Transfer Analysis of a Test Section with Film Cooling - Shock Wave Interaction
No full textIl paper tratta dell'interazione tra fluido refrigerante e urti obliqui
An integrated assessment of energy conversion processes by means of thermodynamic, economic and environmental parameters
No full textA comprehensive method of analysis based on energetic, exergetic, economic and emergetic evaluations is proposed and presented in the paper. Emissions to the environment are also considered. Suitable indicators developed within a methodological framework are defined and discussed according to the previous aspects.
In the authors’ opinion, by performing and comparing all of these evaluations, valuable information about plant performances can be obtained. This can be helpful in the decision making process. The method proposed here is addressed to policy makers and operators and possibly designers working in the field of energy supply and conversion.
Some results from the application to selected plants (hydroelectric, ethanol production and thermoelectric) are presented and compared and general considerations about the effectiveness of different approaches are suggested
The behaviour of plasma triglycerides and cholesterol in HIV positive haemophiliacs
No full textHypertriglyceridemia has frequently been found both in subjects with AIDS and in asymptomatic HIV-positive ones. In order to evaluate the importance of hyperlipemia as an index of the clinical evolution of HIV infection, the levels of triglycerides, total cholesterol and CD4 lymphocytes were determined over a period of 2 years in 8 haemophiliacs with AIDS, 13 asymptomatic HIV-positive and 45 HIV-negative haemophiliacs attending the Operative Unit of Coagulation Disorders of the University of Pisa. The mean concentration of triglycerides and incidence of hypertriglyceridemia were significantly higher in haemophiliacs with AIDS, compared with HIV-negative subjects (p<0.0001), while the triglycerides values of asymptomatic HIV-positives fell between those of the other groups. Cholesterol levels were lower in HIV-positive haemophiliacs and in those with AIDS compared with HIV-negatives. No correlation was found between triglyceride levels and those of CD4 lymphocytes
Neurophysiological and neuroradiological findings in asymptomatic HIV seropositive subjects
No full textImpact of the invasive painted bug Bagrada hilaris on physiological traits of its host Brassica oleracea var botrytis
No full textBagrada hilaris is a herbivorous insect native of Asia and Africa, which has invaded southern Europe and North America where it causes major damage to cole crops. Laboratory experiments were conducted to assess how the infestation of this invasive species damages the host Brassica oleracea var botrytis, and to evaluate the interaction between plant emission of volatile organic compounds (VOC) and B. hilaris adults. Plant responses to insect feeding were evaluated through changes in photosynthesis, stomatal conductance, VOC emission, and visual damage on leaves. The impact of B. hilaris was compared with that of Nezara viridula, a polyphagous species distributed worldwide. Plant VOC role in host plant detection was tested with electroantennography bioassays on B. hilaris antenna. Photosynthesis and stomatal conductance were consistently reduced in plants infested with 40 B. hilaris adults for 24 h. The feeding activity of a single B. hilaris caused larger discolored spots on host leaves in comparison with N. viridula. VOC emitted by B. oleracea changed significantly in response to B. hilaris and N. viridula infestation. In particular, production of limonene was strongly reduced by the infestation of the two pentatomids, while an increase in the emission of acetic acid and 2-ethyl-1-hexanol was observed. EAG dose–response tests using the main plant VOC showed B. hilaris antennal responses to benzaldehyde, octanal, nonanal, and acetic acid, which indicates a role of these compounds in host location
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
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