447 research outputs found
Static, dynamic and impact properties of a high-performance flax-fiber composite
No full textAs environmental issues become increasingly relevant nowadays, the need to develop new materials entirely or partially based on renewable resources is one fundamental step to reduce the consumption of fossil fuels and CO2 emissions. In that sense, natural fiber composites might represent an environmentally sustainable alternative to conventional solutions such as glass and carbon fiber composites, standard today for many lightweight structural applications; however, solutions are several and diverse in terms of technological process, base materials, mechanical properties, and analysis of their behaviour, necessary for safe industrial use, is still lacking for most resin-fiber combinations. Consequently, this work presents a comprehensive material characterization of a flax-fiber reinforced composite material, analyzing both the static and dynamic mechanical performances, targeting future crashworthiness applications. In particular static tensile, compressive, flexural and shear properties were investigated, while low-speed indentation, high strain-rate tensile and ballistic tests were carried out to probe the dynamic and impact features
The Three Layers of Elia Moutamid’s Cinema
No full textIn this article, the author proposes three layers of film analysis and spectatorship in order to discuss film director Elia Moutamid's oeuvre. The first layer refers to the filmic texts (plots and aesthetics), the second situates the films in their socio-historical and cinematographic contexts, and the third layer relates the films to Plato's simile of the cave, establishing their philosophical quality. The author argues that the interrelation between these various layers attests to the refinement of Moutamid's cinematic production
DISPOSITIVO DI POMPAGGIO E COMMUTAZIONE ED UN APPARATO DI SELEZIONE E SMISTAMENTO DI FLUIDI
No full text‘Kontrowersyjna wolnosc. Elia Kazan w amerykanskim przemysle filmowym’ (‘Controversial freedom. Elia Kazan in the US Film Industry’)
No full textThis research based study was peer reviewed and published in the leading film studies journal in Poland.
Elia Kazan is seen as a controversial artist; on the one hand he is regarded as a director of masterpieces, but on the other he is remembered as a “friendly witness” in the 1950s when Hollywood was politically infiltrated by the Senator Joseph McCarthy committee. There is no doubt Kazan was an individualist who had always fought for freedom in the cinema.
The author here shows the artistic road of the director Elia Kazan, his problems with censorship, demonstrating in this way the paradox of democracy and American culture. Research materials included traditional and visual texts from various academic disciplines, including sociology, political studies, and film studies. The piece opens the new research paths for both film studies and American studies in Poland and touches upon contemporary scholarly and political debates
Erratum to: Prevalence of methicillin-resistant Staphylococcus aureus carriage on admission among patients attending regional hospitals in Dar es Salaam, Tanzania
No full textFollowing publication of the original article [1], author Elia Mmbaga pointed out that her name had been misspelt as Elia Mbaga
As ideias de Silvio Elia sobre a língua do Brasil
No full textThe author presents Silvio Elias\u27s ideas about the Portuguese language spoken in Brazil whose start point has rested on some of the basic works of this famous Brazilian philologist.O Autor apresenta neste trabalho as ideias de Sílvio Elia sobre a língua portuguesa falada no Brasil, a partir de quatro obras daquele grande filólogo patrício. 
A Comparative Analysis of an East Sakhalin Ainu folktale collected by Bronisław Piłsudski
No full textThis contribution presents a linguistic analysis of an East Sakhalin Ainu folktale collected by Bronisław Piłsudski in 1903. The author bases their analysis on two different versions of the text, which Piłsudski compiled himself using a cyrillic-script-based and a latin-script-based transcription for Ainu. Taking into account two versions of the folktale where different scripts are used proves insightful with regards to phonetics and phonology and, thanks to Piłsudski’s painstakingly accurate transcription, allows for investigation despite the lack of a backup audio recording. Starting from Piłsudski’s originals, the author provides a re-transliteration of the text, following modern standard conventions for Ainu, and a morphemic analysis. A discussion of the most salient grammatical aspects of the informant’s language fol-lows and a comparison with neighboring West Sakhalin Ainu dialects is drawn
Instability and nonuniqueness in mathematical fluid dynamics
No full textIn this note, we review and expand upon the material presented in the minicourse titled "Instability and Nonuniqueness in Fluid Dynamics,"which the author held during the "Meeting on Nonlinear Evolution PDEs, Fluid Dynamics, and Transport Equations"at the Ettore Majorana Centre in Erice in May 2023
Polysemy and apparent polyfunctionality of the Sakhalin Ainu prefixes e- and ko-: Insights on applicativization and aspect
No full textThe present study focuses on the polysemous verbal prefixes e- and ko- of Sakhalin Ainu and proposes their analysis as markers of high transitivity. The author takes a compositional approach to argument structure and event structure in order to account for the main use of e- and ko- as applicative markers as well as for their less common use as markers of resultative-completive and intensive aspect. Ultimately, the analysis shows that the apparent polyfunctionality of e- and ko- arises from two separate applications at the syntax-semantics level of one same underlying function of the prefixes. The author also comments on how the Sakhalin Ainu case fits in with other cases of valence-aspect conceptual overlapping cross-linguistically and on the implications of his findings for Ainu studies specifically
The glucosinolates and their health effects
No full textreservedI glucosinolati sono composti chimici che appartengono ad una famiglia di oltre 120 metaboliti secondari. Si trovano principalmente nelle Brassicaceae, ovvero una famiglia di piante commestibili di cui fanno parte i broccoli (Brassica oleracea var. italica), il cavolo (B. oleracea var. capitata f. alba), il cavolfiore (B. oleacera var. botrytis), la colza (B. napus), la senape (B. nigra) e il rafano orientale (Armoracia rusticana).
La composizione quantitativa e qualitativa dei glucosinolati varia a seconda della specie vegetale (es.: nella colza è predominante la sinigrina). Quando queste piante vengono consumate senza cottura, l’enzima mirosinasi presente nei tessuti idrolizza i glucosinolati in vari metaboliti secondari come gli isotiocianati ed i nitrili.
D’altra parte, quando le crucifere vengono consumate dopo cottura, la mirosinasi viene denaturata e i glucosinolati vengono in parte assorbiti a livello intestinale.
Questi composti conferiscono agli alimenti un gusto amaro e pungente; inoltre, queste sostanze hanno effetti antiossidanti e anticancerogeni. Di conseguenza, grazie alle loro caratteristiche sono stati condotti numerosi studi per conoscerne a pieno le potenzialità.
Questa Tesi ha lo scopo di illustrare le caratteristiche dei glucosinolati, i loro effetti sulla salute e gli aspetti più importanti legati alla lavorazione, alla conservazione e ai trattamenti termici.
Nella prima parte della Tesi viene illustrata la loro struttura chimica, la classificazione, in quali alimenti sono presenti e il loro metabolismo all’interno della pianta.
Successivamente viene trattato il complesso enzimatico mirosinasi in merito alla sua composizione, la sua funzione e il suo coinvolgimento nell’idrolisi dei glucosinolati.
In seguito, vengono descritti i composti che derivano dai glucosinolati, la loro importanza e la loro biodisponibilità. Viene posta una particolare attenzione al sulforafano, ovvero l’isotiocianato che deriva dalla glucorafanina, essendo il più studiato e tra i più importanti.
Inoltre, vengono trattati i fattori che influenzano la concentrazione e la degradazione dei glucosinolati all’interno degli alimenti.
Negli ultimi capitoli vengono esaminati i metodi analitici per la rilevazione di questi composti e le applicazioni di queste sostanze nell’industria alimentare.The glucosinolates are chemicals compounds that belong to a family of over 120 secondary metabolites. They are found in Brassicaceae, that is a family of edible plants of which they are a part broccoli (Brassica oleracea var. italica), cabbage (B. oleracea var. capitata f. alba), cauliflower (B. oleacera var. botrytis), rapeseed (B. napus), mustard (B. nigra) and eastern horseradish (Armoracia rusticana).
The composition quantitative and qualitative of glucosinolates varies according to the vegetable specie (ex: sinigrin is predominant in rapeseed). When these plants are consumed without cooking, myrosinase enzyme present in the tissues hydrolyzed glucosinolates in various secondary metabolites like isothiocyanates and nitriles. On the other hand, when cruciferous are consumed after cooking, myrosinase is denatured and glucosinolates are partially absorbed in the intestine.
These compounds give foods a bitter and pungent taste; moreover, these substances have antioxidant and anticarcinogenic effects. Consequently, thanks to their characteristics, numerous studies have been conducted to fully understand their potential.
This Thesis aims to illustrate the characteristics of glucosinolates, their effects on health and the most important aspects relate to their processing, storage, and heats treatments.
Subsequently the enzyme complex myrosinase is treated, about its composition, its function, on which movement in the hydrolysis of glucosinolates.
Afterwards, the compounds deriving from glucosinolates are described, their importance and their bioavailability. Particular attention is paid to sulforaphane, or the isothiocyanate that derives from glucoraphanin, being the most studied and among the most important.
Furthermore, the factors are treated so that their influence, their concentration, and their breakdown of glucosinolates inside foods.
In the later chapters the analytical methods are examined to quantify these compounds and the application of these substances in the food industry
- …
