Navegando por Data de Publicação, começando com "2019-09-23"

Filtrar resultados por ano ou mês

Agora exibindo 1 - 2 de 2

A atuação do intérprete de Libras: um estudo situacional sobre microexpressões faciais
(Universidade Federal de São Carlos, 2019-09-23) Cerantola, Giovana Teixeira de Mendonça; Silva, João Paulo da; https://lattes.cnpq.br/6111069189059770; Cabello, Janaina; https://lattes.cnpq.br/4349074907357325; https://lattes.cnpq.br/1053345786722609
The present work aims to discuss and problematize the concept of impartiality of the interpreter of libras (Brazilian sign Language), from the analysis of the facial microexpressions produced by him, describing the facial expressions displayed by This professional in a situation of interpreting an emotionally charged discourse. Given that the microexpressions are subtle emotions that appear on the face as we try to oppress a specific emotion, the work aims to analyze a video at the time of the interpreter's performance, in a situation in which he has no prior knowledge of the material he will Interpret. Based on these data, we tried to describe the facial microexpressions, in order to evidence possible emotions contained by the interpreter. From the analyses, it was possible to verify by the results of actions taken as impartial, there is an intense work of the professional interpreter to contain formulations that transparethe aspects of his subjectivity. The analysis of microexpressions, however, reveals that in the smallest details of facial gestures, it is possible to identify indices of emotions caused by the stress situation in question. This discussion draws attention to the need to conceive the professional interpreter of pounds as a human being (and not as mere conduit of information from a source A to a destination B), who, acting in situations which put in a situation of discomfort, sometimes , it will manifest, although minimal expressions, complex conceptions and perceptions of its subjectivity.
Electrochemistry and STM-assisted Molecular electronics study of bimetallic hexaphyrins
(Universidade Federal de São Carlos, 2019-09-23) Quintans, Ciro Scheremeta; Souza, Ernesto Chaves Pereira de; https://lattes.cnpq.br/1505400360366643; https://lattes.cnpq.br/4040323563393942
ELECTROCHEMISTRY AND STM-ASSISTED MOLECULAR ELECTRONICS STUDY OF BIMETALLIC HEXAPHYRINS. The electron transport in porphyrinoids are related to several bioprocesses in Nature, from conversion from solar energy to chemical energy in photosynthesis to the transport and reduction of oxygen in aerobic animals. Due to these characteristics, several bioinspired applications have used this class of materials, photovoltaics, water splitting, catalysis and photodynamic therapy. To further understand how this process occurs in expanded porphyrins, 5 hexaphyrins in Hückel aromaticity were synthesized, with and without metal centres. These molecules were characterized by spectroscopy, electrochemistry and through molecular break junctions. The absorption spectrum of hexaphyrins show several possibly transitions, which splits and broadens with the addition of metal centres due to the degeneration of the molecule’s orbitals. The spectroscopic band gap was characterized by fluorimetry showing a gap between 1.12 to 1.20 eV for the molecules synthesized. Electrochemistry measurements shows several distinct quasi-reversible redox pairs. The addition of metal centres shifted the processes accordingly to the electronegativity of the metal centres. Due to the severe number of reactions a diagnosis criterium was developed to indicate which peaks corresponds to reactions in the macrocycle or its ligands and which are likely to occur on the metal centres. The molecular conductance of the hexaphyrins were studied with STM assisted break junctions on non-modified and modified gold as electrodes. The gold modification was proved necessary due to the lack of interactions between the molecules and the metal electrodes. Several current signatures were observed on 4-TPy modified gold. This corresponds to all possible molecular junction conformations. Upon the addition of metal centres, a similar trend is observed for each metal, indicating that the molecule properties do not impact as much as the conformation of the molecular wire.