Research Seminar #2, Apr 4, 2012, 14h30-16h
1. Taking the most out of analytical data: the case of wine age prediction
Marco S. Reis
CIEPQPF, DEQ-FCTUC, Process Systems Engineering Group
Data generated by modern hyphenated instruments, i.e. instruments that combine two or more measurement principles (such as, GC-MS, HPLC-DAD, Excitation-Emission spectroscopy, among others), have been raising relevant challenges to analysts, given the large amount of information conveyed and the structure in which it is organized, usually consisting of three-mode data arrays or cubes of data. Usually, two of these modes regard the two analytical measurement principles considered in the technique, while the third one is relative to the various samples under analysis. In this talk, we address how these datasets can be effectively employed to: i) analyse the influence and interaction of compounds; ii) interpret ageing trends; iii) develop predictive models; iv) provide a basis for fraud detection. The case study regards the process of Madeira wine’s age prediction.
2. Thermophysical Properties of Phosphonium Ionic Liquids
Abel G. Ferreira
CIEPQPF, DEQ-FCTUC, Thermodynamics and Thermophysical Properties Group
Room temperature ionic liquids (RTILs) have spanned a wide variety of applications. They have been used as solvents for many synthetic and catalytic reactions, liquid-liquid extractions, gas-liquid separation, heat storage, membrane-based bioseparations, tribology, and as potential electrolytes. The purpose of this talk is to present and to analyze the thermophysical properties of phosphonium based RTILs with relevance for the technological design of processes and new industrial applications, namely density, heat capacity, surface tension and transport properties. Ionic liquids based on tetraalkylphosphonium cations are used to illustrate the most important behaviors.