8 documents found, page 1 of 1
Gender Depiction in Portuguese: Distant Reading Brazilian and Portuguese Litera...
Freitas, Claúdia; Santos, DianaIn this paper, we look at how masculine and feminine characters are described in literature in Portuguese using a publicly available literary corpus: Literateca. We investigate the words used to characterise human beings, after classifying them into four broad categories, namely those related to the social, appearance, character and emotional axes. We study the influence of genre, literary school, author gender...
Temperature calibration for distributed temperature sensing of printed circuit ...
Leite, Tiago Mauricio; Freitas, Claúdia; Magalhães, Roberto; Silva, Alexandre F.; Ferreira da Silva, Alexandre; Alves, José Ricardo; Viana, J. C.The work investigates the procedures for temperature calibration of optical fiber sensors (OFSs), implemented on printed circuit boards (PCBs), aiming to accomplish accurate distributed temperature measurements, during temperature cycles. The OFSs are interrogated by optical frequency-domain reflectometry, OFDR, which provides plenty of sensing points using a single OF. For temperature measurements, it was used...
Carbon concentration and oxygen availability affect lipid and carotenoid produc...
Parreira, Teresa M.; Freitas, Claúdia; Reis, Alberto; Roseiro, J. Carlos; Silva, Teresa Lopes daThe simultaneous effect of oxygen availability and carbon source concentration on yeast lipid and carotenoid production has never been studied before. In this work, a Doehlert distribution design was used to study the simultaneous effect of carbon concentration and oxygen availability on Rhodosporidium toruloides NCYC 921 carotenoid and lipid production. A cheap industrial byproduct was used as carbon source (c...
Selecting low-cost carbon sources for carotenoid and lipid production by the pi...
Freitas, Claúdia; Parreira, Teresa M.; Roseiro, J. Carlos; Reis, Alberto; Silva, Teresa Lopes daThe present work studied low-cost carbon sources for carotenoid and lipid production using the yeast Rhodosporidum toruloides NCYC 921. Carob pulp syrup and sugarcane molasses at different concentrations were used as low-cost carbon sources in R. toruloides batch cultivations. Carob pulp syrup containing a total sugar concentration of 75 g L1 induced the highest total fatty acid productivity (1.90 g L1 h1) and ...
New at-line flow cytometric protocols for determining carotenoidcontent and cel...
Freitas, Claúdia; Nobre, B. P.; Gouveia, Luisa; Roseiro, J. Carlos; Reis, Alberto; Silva, Teresa Lopes daRhodosporidium toruloides NCYC 921 batch growth was monitored as a means to evaluate the yeastbiomass potential as a source for the production of carotenoids and other lipids.Carotenoid content, cell viability and size were assessed by multiparameter flow cytometry. Thesaponifiable lipid fraction was assayed by gas–liquid chromatography.The carotenoid production increased during the stationary phase, reaching 7...
Use of Multi-parameter Flow Cytometry as Tool to Monitor the Impact of Formic A...
Freitas, Claúdia; Neves, Elisabete; Reis, Alberto; Passarinho, Paula; Silva, Teresa Lopes daThe use of lignocellulosic materials as substrate for bioethanol production is considered a cost-effective approach to make the biofuel production process economically sustainable. However, lignocellulosic hydrolysis releases toxic compounds such as weak acids which inhibit microorganism growth and ethanol production. In order to understand the physiological response of Saccharomyces carlsbergensis when ferment...
Use of flow Cytometry as a quick way to select low cost carbon sources for biod...
Freitas, Claúdia; Parreira, Teresa M.; Nobre, B. P.; Gouveia, Luisa; Reis, Alberto; Roseiro, J. Carlos; Silva, Teresa Lopes daSome yeasts like Rhodosporidium toruloides are oleaginous and can be used for biodiesel production. In addition, some strains are able to produce valuable carotenoid pigments which are of great commercial interest, contributing significantly to reduce the biodiesel production costs. Carotenoid extraction and quantification are time consuming, generate high amounts of waste and require the use of considerable am...
Use of Multi-parameter Flow Cytometry as Tool to Monitor the Impact of Formic A...
Freitas, Claúdia; Neves, Elisabete; Reis, Alberto; Passarinho, Paula; Silva, Teresa Lopes daThe use of lignocellulosic materials as substrate for bioethanol production is considered a cost-effective approach to make the biofuel production process economically sustainable. However, lignocellulosic hydrolysis releases toxic compounds such as weak acids which inhibit microorganism growth and ethanol production. In order to understand the physiological response of Saccharomyces carlsbergensis when ferment...