Search results for "84"
showing 10 items of 590 documents
Antipredatory function of head shape for vipers and their mimics.
2011
Most research into the adaptive significance of warning signals has focused on the colouration and patterns of prey animals. However, behaviour, odour and body shape can also have signal functions and thereby reduce predators' willingness to attack defended prey. European vipers all have a distinctive triangular head shape; and they are all venomous. Several non-venomous snakes, including the subfamily Natricinae, commonly flatten their heads (also known as head triangulation) when disturbed. The adaptive significance of this potential behavioural mimicry has never been investigated. We experimentally tested if the triangular head shape typical of vipers offers protection against predation.…
La ambigua institucionalización de la eutanasia como derecho individual de carácter prestacional. Apunte crítico sobre la lo 3/2021, de 24 de marzo
2021
Se abordan aquí tres aspectos relativos a la Ley española de eutanasia, promulgada el 24 de marzo de 2021, que resultan especialmente problemáticos: la falsa configuración de la eutanasia como un ?derecho subjetivo?, el falso protagonismo de la autonomía del sujeto y la calificación de la eutanasia como ?muerte natural?. Se sostiene la tesis de que la ley solo ha despenalizado el delito eutanásico cuando se realiza de acuerdo con los requisitos legales; de que no existe un derecho a la muerte y por tanto no es la voluntad del solicitante la que determina la prestación eutanásica y las repercusiones que se producirán en diversos ámbitos por la calificación de muerte natural.
Les débats devant la commission d'esclavage
2010
On March 4, 1848, thanks to the decisive impetus given by Victor Schoelcher, the principle of the abolition of slavery was proclaimed by decree and a « Commission for the preparation of an act of immediate emancipation in all the colonies of the Republic » was established. Like the commission de Broglie under the July Monarchy, the commission, chaired by Schoelcher, provided a huge work of documentation, information and reflection on the settlements, studying also the organization of the English colonies. However, unlike the previous one, the commission of 1848 required the immediate abolition of slavery (Decree of April 27, 1848), without waiting for the election of the National Assembly, …
«Was not the labour problem the same everywhere». «Homo ad laborem nascitur et avis ad volatum»! (Prolegomena per uno studio del diritto del lavoro t…
2019
The purpose of this research is to catalogue the biblical texts - notably in a first phase those which are in the first (or old) testament of the Christian Bible - which contain both prescriptive structures and pathways designed to protect the position of social weakness of the "worker", understood in its broadest sense and in its various and diverse facets: worker, salaried employee, servant, even slave, and so on. The starting point and most immediate objective of this work is therefore to find the biblical sources - and to get ready one first critical apparatus - which refer, directly or indirectly, to work in a broad sense, that is a personal relationship in which one of the two subject…
La contestazione della pretesa contributiva
2010
Questo saggio analizza la disciplina di cui al d. lgs. n. 46 del 1999 in ordine alla contestazione giudiziali e stragiudiziali dell'atto di accertamento e imposizione contributiva. This paper analyses the discipline, in d. lgs. No 46, 1999, in order the social insurance tax oppositions.
Employing Microwave Graphene Field Effect Transistors for Infrared Radiation Detection
2018
In this work, we investigate the possibility of employing graphene field effect transistors, specifically designed for microwave applications, as infrared detectors for telecom applications. Our devices have been fabricated on a sapphire substrate employing CVD-grown transferred graphene. The roles of both the gate dielectric and the DC bias conditions have been evaluated in order to maximize the infrared generated signal through an experimental investigation of the signal-to-noise ratio dependence on the transistor operating point.
Sustainability in the restoration and management of the historic architecture in Palermo
2015
This research investigates the energy and environmental sustainability in the restoration and conservation of historic buildings. It focuses on the architectural heritage of Palermo, which can be a significant case study for the Mediterranean area. Its objective is to analyse the current energy performance of this historic architecture and its potential for energy improvement. Therefore, it aims at proposing a methodology to combine the enhancement of energy and environmental performances of the historic architecture of Palermo with the need of its material and aesthetic conservation, in the frame of the current regulations.
Rebuilt the space using stone or brick vaulted systems: catching the contemporary challenge of construction tradition
2019
In the recovery and restoration sites, as well as in the versatile word of university research about construction history, its not infrequent to study stereotomy for the re-proposal of stony or tiled vaulted systems, sometimes complex for their constitutive geometry, equipment, preliminary/subsidiary carpentry works. It represents a didactic study-key also in Engineering and Architecture Schools, through laboratories that teach to future designers a know-how that can be easily spent in their professional repercussions.
Innovative, Translucent and Multi-functional Components for the Building Envelope: technological and performance optimization
2017
The paper describes the actions aimed at the technology and performance optimization of an innovative, multi-functional building component made of precast and pre-stressed glass blocks useful for the construction of sustainable building envelopes able to reduce the energy consumption and to produce clean energy from the sun. The design optimization of different sub-components and the choice of the right materials for guaranteeing their good response in terms of mechanical resistance, thermal and acoustic insulation, light transmission, electricity production, integration with other components, dimensional coordination, are particularly described.
Architecture in iron in the city of XIX century Roof structures of theatres and covered markets in Palermo
2016
In post-unification Palermo, components manufactured abroad were usually used for complementary iron structures (greenhouses and skylights, projecting roofs, staircases…), whereas, for more demanding works, more weight was given to the contribution of producers with experience gained in the field of metal construction. Analysis is here carried out on the works of greatest importance, from the roofs of the two major theatres to the roofing of food market structures; the finest technicians were employed and a critical debate was triggered in the city with regard to formal, static and building aspects.