1,721,636 research outputs found
T-minima on convex sets and Mosco-convergence
No full textHalf century ago, Umberto Mosco was the ``relatore di tesi (tesi about the Mosco- convergence) di laurea'' of the first author; a quart of century ago, the first author was the ``relatore di tesi di laurea'' of the second author. The roots of this paper are the Mosco-convergence of convex sets and the minimization of integral functionals of the Calculus of Variations. We consider integral functionals of the type J(v)=∫Ω j(x,Dv)-∫Ω f(x)v(x). We study the existence of T-minima (infinite energy minima) on convex sets of the Sobolev space W01,p(Ω) and the stability of the T-minima under the Mosco-convergence of the convex sets
Heat affected zone extension in pulsed Nd:YAG laser cutting of CFRP
No full textLaser cutting is a promising alternative to the traditional methods in CFRP cutting. However, laser cutting is based on thermal interaction that results in thermal damages of both matrix and fibres. The heat affected zone (HAZ) extension is strictly dependent on the adopted laser source and the working parameters. The paper presents an experimental study on the laser cutting of CFRP plate, 1 mm in thickness by means of 150 W Nd:YAG pulsed laser. The cutting region and the influence of process parameters, pulse energy, pulse duration and overlapping, on the kerf geometry and the HAZ were analyzed. Experimental results showed that the adopted laser is able to cut the CFRP plate, up to 10.8 mm/s. However, an accurate selection of the process parameters is necessary in order to obtain the maximum cutting speed and a narrow HAZ. Moreover, a relation between the HAZ extension and the process parameters (average power, cutting speed, pulse frequency and pulse duration) was found
Effects of surface laser treatment on direct co-bonding strength of CFRP laminates
No full textLaser surface treatment is a promising technique to increase the adhesive strength of carbon fibres reinforced plastics joints. In this technique, the laser beam is adopted to remove the outer matrix layer up to the expose the underlying reinforcement. This study deals on the effect of laser treatment on the joint strength of CFRP laminate obtained by direct co-bonding. To this aim, laser treatments at different process conditions were performed on autoclave cured CFRP, adopting a pulsed Yb:YAG fiber laser. The obtained surfaces were characterized by microscopy. Single lap joints were obtained by infusion techniques by superposition of fresh laminates and laser treated laminates without any kind of adhesive. Untreated and sandpaper treated samples were adopted as reference specimens. After joints consolidation, mechanical tests were carried out; apparent shear strength was measured and post mortem analysis was performed. The results show that laser treatments allow the doubling of the apparent shear strength
Notes on intersectional approach and feminist disability studies. An historical excursus
No full textIn the case of women with disabilities, the bias existing in the male-female dichotomy, inequalities and discrimination are unquestionably amplified. In general, it is true that women are still subject to inequalities everywhere and that there is a huge bias to overcome; this is a given fact worldwide, with precise figures for Europe, for example. This section offers an analysis of the discrimination suffered by women with disabilities from the point of view of the intersectionality and also offers a very brief overview of the new factors introduced by feminist disability studies, when, in overcoming the claims related the fact that feminist movements and feminist studies simply omitted and left out the issues concerning women with disabilities, this new axis begun to represent a fresh start in the non-partial history of women and disability and disability in general
Metodologie della ricerca interdisciplinare. Atti della Giornata della Ricerca DiDEC 2022
No full textHistorical introduction to engendered disability. An international point of view
No full textThis chapter offers a short introduction to the worldwide legislative panorama related to the disability and women with disability and in particular: the Convention on the Rights of Persons with Disabilities emitted by the United Nations in 2006 and the previous process resulting in this convention, to focus on disability and the EU legislation and reports. The Convention represented and indeed continues to represent a major cornerstone in history, not only for persons with disabilities, but it also led to the new affirmation of the rights of everyone and to the celebration of human diversity and human dignity. It constituted the most important achievement after decades of fight for the fundamental freedom and full participation of persons with disability. This arose a higher awareness in the European context and therefore this chapter will also introduce the theme in the European environment, presenting a discussion of the general approach to disability and by inserting it into a general framework of analysis of the EU vision towards inclusion and equality, which has changed remarkably over the last few decades, ultimately also incorporating disability and minorities claims
Beth R. Robinson, Lucille M. Kina, and Leone C. Bingham
No full textColor photo showing three women, identified as Beth R. Robinson, Lucille M. Kina, and Leone C. Bingham. Possibly friends of Byron A. Hunter. At least one, Leone Bingham, was part of the 50th Anniversary reunion in 1979
The CPM Effect: Functional Assessment of the Diffuse Noxious Inhibitory Control in Humans
No full textThe diffuse noxious inhibitory control, which has been investigated extensively in animals, consists of the inhibitory modulation of pain pathways after heterotopic noxious stimulation. The subnucleus reticularis dorsalis, which lies in the caudal part of the medulla, together with its descending projections to the wide-dynamic-range neurones, is responsible for the diffuse noxious inhibitory control. Many studies have investigated the diffuse noxious inhibitory control phenomenon in humans. However, owing to the complexity of the effect of descending modulation on human pain perception, expert opinion has recommended the term "conditioned pain modulation" to describe the psychophysical paradigm in which a heterotopic noxious stimulus is used to affect pain pathways in humans. In this narrative review, we present the current knowledge on the mechanisms underlying the diffuse noxious inhibitory control in animals and show how this phenomenon can be investigated in humans by using the conditioned pain modulation paradigm. We also demonstrate the relevance of conditioned pain modulation to the pathophysiology of pain
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