Search results for "TRADE"

Lentiviral transduction of face and limb flaps: implications for immunomodulation of vascularized composite allografts.

2012

Background Ex vivo introduction of an immunomodulatory transgene into a face or hand allograft may improve the risk-to-benefit ratio of vascularized composite allografts. Abrogation of the immunogenicity of the skin component of a face or hand allograft may decrease alloreactivity and permit the induction of immunologic tolerance. Proof-of-principle demonstrations of transduction of composite tissue have been established using adenoviral vectors, producing transient gene expression. The authors hypothesized that transduction, integration, and long-term expression of transgenes in a vascularized composite allograft could be achieved using lentiviral vectors. Methods Ex vivo transduction of h…

Efeitos da sustentabilidade e valor logístico nas relações entre empresas de transporte marítimo

2020

Resumen El objetivo de este trabajo fue analizar cómo la sostenibilidad (económica, social y ambiental), bajo el enfoque de triple línea base, afecta la calidad de servicio, el valor logístico y la satisfacción en empresas del sector marítimo. Se propone un modelo teórico que se contrasta con la información suministrada por una muestra de 50 responsables de empresas (transitarios, importadores y exportadores) en Panamá. La información se analiza mediante la estimación de regresión por mínimos cuadrados parciales, que permite confirmar el carácter multidimensional de la sostenibilidad y del valor logístico. Los resultados también confirman que las percepciones de los clientes sobre las inici…

Heritage that hurts: tourists in the memoryscapes of September 11

2014

As the symbolic epicentre of American supremacy, the World Trade Centre was targeted by the September 11 terrorists to convey a message of fear to the USA and the rest of the world. To some extent,...

Internationalisation process of Spanish banks: strategic orientation after the mergers

2003

The present globalisation of the economy is one of the main forces driving the internationalisation process of firms, a phenomenon that has been one of the most widely studied in the literature and which has given rise to numerous explanatory theories. The manufacturing sectors of machinery, food, textiles, furniture have already consolidated their presence in international markets, induced by the increased competition deriving from liberalisation of foreign trade and the desire to conquer new markets. If in manufacturing sectors globalisation has been high, the service sector has not been far behind. One of the sectors that has been most influenced by changes in the competitive framework i…

Integrismo político en EEUU / 5. El eje nacional-populista

2004

Improving the rheometry of rubberized bitumen: experimental and computation fluid dynamics studies

2017

Abstract Multi-phase materials are common in several fields of engineering and rheological measurements are intensively adopted for their development and quality control. Unfortunately, due to the complexity of these materials, accurate measurements can be challenging. This is the case of bitumen-rubber blends used in civil engineering as binders for several applications such as asphalt concrete for road pavements but recently also for roofing membranes. These materials can be considered as heterogeneous blends of fluid and particles with different densities. Due to this nature the two components tends to separate and this phenomenon can be enhanced with inappropriate design and mixing. Thi…

The Ricardian system: a graphical exposition

2017

Ever since its publication, Pasinetti’s 1960 paper has been a primary reference for all scholars interested in Ricardian economics. However, Kaldor's 1955-6 diagram is a very effective tool for depicting the salient features of the Ricardian system and its full heuristic potentialities are still under-explored. Accordingly, we give it pride of place in this paper. In what follows, after a brief presentation of a slightly amended version of Kaldor’s original diagram, we show how this diagram may be modified to represent Pasinetti’s two-sector model of a closed economy. Next we use it to analyse alternative consumption patterns. Finally, we employ a variant of Kaldor’s diagram to study a two-…

Road design problems solved by affine arithmetic

2015

In this paper we propose the use of techniques based on range numbers for solving problems of road designing. We applied the Affine Arithmetic to verify the driver's visibility in a horizontal curve, providing very interesting results and confirming its usefulness even in the most complex analytical expressions. The preparation of charts such as those proposed in this paper also makes this method directly accessible to those not so familiar with this technique.

Integrating Circularity in the Sustainability Assessment of Asphalt Mixtures

2020

Rising concerns about the impacts that the road engineering industry is imposing to the environment have redirected national road authorities to firmly re-consider the sustainability implications of their operations. Lately, though, sustainability has established a forceful correlation with the Circular Economy and its principles. The road engineering industry, therefore, is moving towards more circular approaches. However, this is occurring without the assessment of the potential impacts of such a transition. For this reason, in this study, a composite indicator, namely, Environmental Sustainability and Circularity indicator (ESCi), for investigating the potential effects that increased ci…

A methodology to identify critical road sections by means of cyclist's fatigue

2020

This paper proposes a procedure for determining cyclists’ fatigue state along a specific road, as a function of some external variables related to the environmental context. When the physical fatigue reaches extreme levels, the cyclist’s ability to deal with an unexpected event or with an emergency condition is particularly limited; further, poor road pavement conditions may increase occurrence probability of critical events. In order to identify the potentially most dangerous road paths, the authors defined a methodology to build a model for cyclist’s fatigue evaluation in terms of Heart Rate class. The proposed procedure is based on the collection of simple data processed by means of Patt…