Search results for "Mw"

Los estudiantes de intercambio y el control del problema de polizones en los equipos de trabajo

2016

This study discusses a teaching experience that has been taking place at the School of Economics and Business at Universitat Autònoma de Barcelona (UAB) since the academic year 2012-2013. We implement a self-evaluation mechanism: students working on group projects are required to deliver a joint declaration in which they asses their individual participation in the accomplishment of the joint task. The importance of this device is twofold. On the one hand, it reduces conflictivity among team members and, on the other hand, it delivers quantitative elements to the lecturer for grading the individual participation to the group report. The results of our experience provide evidence that foreign…

Processing and characterization of UHMWPE/α-tocopherol-CNTs nanocomposites

2013

Self thermostabilizing tocopherol-CNT/UHMWPE nanocomposites

2013

Thermo-oxidative resistant UHMWPE-based nanocomposites containing hybrid-nanoparticles based on natural anti-oxidants and carbon nanotubes

2015

The use of natural antioxidants is an attractive way to formulate nanocomposites with extended durability and with potential applications in bio-medical field. In this work, Vitamin E (VE) in the form of α-tocopherol and Quercetin (Q) were physically immobilized onto multi-walled carbon nanotubes bearing covalently-linked long-chain alkyl ester groups (CNTs) and the resulting hybrids CNTs-VE and CNTs-Q were used to formulate thermo-oxidation stable ultra high molecular weight polyethylene based nanocomposites. The thermo-oxidation of the nanocomposites was performed at 120°C in air oven. The samples were then subjected to FTIR analyses at different annealing times. The accurate analysis of …

Immobilization of natural anti-oxidants on carbon nanotubes and aging behavior of ultra-high molecular weight polyethylene-based nanocomposites

2014

The use of natural antioxidants is an attractive way to formulate nanocomposites with extended durability and with potential applications in bio-medical field. In this work, Vitamin E (VE) in the form of α-tocopherol and Quercetin (Q) are physically immobilized on the outer surface of multi-walled carbon nanotubes (CNTs). Afterward, the CNTs-VE and CNTs-Q are used to formulate thermally stable ultra high molecular weight polyethylene based nanocomposites. The obtained results in the study of the thermo-oxidation behavior suggest a beneficial effect of the natural anti-oxidant carbon nanotubes systems. The unexpected excellent thermo-resistance of the nanocomposites seems to be due to a syne…

Umwelt

2020

The term UMWELT spreads in the German language from the beginning of the nineteenth century, to indicate—both in a general relational and sociological sense, and in more specific reference to the peculiarities of PERCEPTION considered as an essential biological characteristic—the external world that surrounds and accompanies living organisms.

armonia e contrappunto. Jacob von Uexküll tra etologia e ontologia

2013

New Trends in Urban Drainage Modelling

2019

This book addresses the latest research advances, innovations, and applications in the field of urban drainage and water management as presented by leading researchers, scientists and practitioners from around the world at the 11th International Conference on Urban Drainage Modelling (UDM), held in Palermo, Italy from 23 to 26 September, 2018. The conference was promoted and organized by the University of Palermo, Italy and the International Working Group on Data and Models, with the support of four of the world’s leading organizations in the water sector: the International Water Association (IWA), International Association for Hydro-Environment Engineering and Research (IAHR), Environmenta…

Urban runoff modelling uncertainty: Comparison among Bayesian and pseudo-Bayesian methods

2009

Urban stormwater quality modelling plays a central role in evaluation of the quality of the receiving water body. However, the complexity of the physical processes that must be simulated and the limited amount of data available for calibration may lead to high uncertainty in the model results. This study was conducted to assess modelling uncertainty associated with catchment surface pollution evaluation. Eight models were compared based on the results of a case study in which there was limited data available for calibration. Uncertainty analysis was then conducted using three different methods: the Bayesian Monte Carlo method, the GLUE pseudo-Bayesian method and the GLUE method revised by m…

The value trade-off in higher education service: A qualitative intercultural approach to students’ perceptions

2016

Purpose: Higher Education Institutions (HEIs) have become a highly competitive market, where consumers (i.e. students) are highly involved in their choices, and managers need to focus on competitive edges. This paper aims to understand the factors that influence international Master students’ choice behaviour and fulfil student expectations of customer value in HEIs. Design/methodology: With qualitative information (five focus groups) collected from international students (of 12 different nationalities) of several universities in Spain, UK and China, the paper investigates the formation of customer value as a trade-off between benefits and costs. This qualitative approach aims first at asse…