Separation of aroma compounds from industrial hemp inflorescences (Cannabis sativa L.) by supercritical CO2 extraction and on-line fractionation

The use of supercritical carbon dioxide (Sc-CO2) extraction at 10 and 14 MPa and 40 \ub0C and on-line fractionation using two separators (Sep 1: 7 MPa/25 \ub0C; Sep2: 5 MPa/15 \ub0C) to recovery volatile compounds from the inflorescences of fiber type Cannabis sativa L. was investigated by HS-SPME/GC\u2013MS and direct GC\u2013MS and compared with hydrodistillation. The best results were obtained by Sc-CO2 extraction carried out at 10 MPa and 40 \ub0C. Under these operating conditions, cuticular waxes covering the surface of flowers were collected in the first separator and volatile compounds (100%) in the second. The superior quality of this last extract was proved by the perfect overlapping of its HS-SPME/GC\u2013MS volatile profile to that of inflorescences. The recovery of fractions with different composition and biological properties, made the inflorescences of fiber type Cannabis sativa L suitable for cosmetic and/or food industry

Application of a supercritical CO2 extraction procedure to recover volatile compounds and polyphenols from Rosa damascena

A supercritical CO2 (Sc-CO2) extraction procedure to recover volatile compounds and polyphenols from Rosa damascena is investigated. It consists of two steps: the first by Sc-CO2 at 16 MPa and 313.15 K and on-line fractionation using two separators (S1: 7 MPa/ 298.15 K; S2: 5 MPa/ 288.15 K) for volatile compounds, the second by Sc-CO2 added with 10% ethanol-water mixture (57% v/v) at 8 MPa and 313.15 K for polyphenols. Sc-CO2 extract obtained in S2 resulted of high quality compared with essential oil. Polyphenol yield by SC-CO2 added with co-solvent resulted about 80 % of methanol extraction (3250 mg GAE/100 g dw)

Mortalidade nos Idosos numa Unidade de Cuidados Intensivos: A idade não explica tudo!

Este trabalho centra-se no estudo comparativo da população idosa e não idosa na Unidade de Cuidados Intensivos (UCI) do Centro Hospitalar Tondela-Viseu, tendo como objetivo identificar fatores de influência na sobrevivência dos pacientes da UCI, diferenciando idosos de não idosos, e procurando esclarecer o que influência o desfecho final (morte ou sobrevida). Analisou-se a associação deste desfecho com a proveniência do paciente e verificou-se que o risco de morte era maior nos pacientes com tipo de admissão Médico (tratamento médico). Quanto à terapêutica na UCI, muitas delas revelaram-se significativamente associadas com o desfecho final, destacando-se a terapêutica substitutiva de função renal e a terapêutica aminérgica como as mais agravantes quanto ao risco de morte, quer entre idosos quer entre não idosos. Verificou-se também que a idade exata do paciente não é significativamente determinante da morte/sobrevida nos idosos, embora seja nos não idosos, o mesmo acontecendo com o score de comorbilidades segundo o índice de Charlson.info:eu-repo/semantics/publishedVersio

FeelOpo: feel(ing) the beat of Oporto

Instalação de arte digital publicada nas atas da 8th International Conference on Digital Arts – ARTECH 2017, realizada em Macau de 6-8 de setembro de 2017This digital art installation has as main goal to introduce an interface through which the image of the city of Oporto (in Northern Portugal) is designed and activated by the presence of one or more people standing in the exhibition space. It brings up the metaphor of the city as a living organism allowing visitors to explore, at different levels, several features very typical of this city. A diversity of possible routes is embedded in the outfit and activated as visitors move across the exhibition space, revealing experiences by means of projected videos related to the cultural specificity of the city. In this way, as the human body interacts with the space and the screen, uncovering stories, memories, expressions, sounds, colours, textures, new designs and emotions are presented in the form of videos that narrate life fragments of Oporto and its people. Being supported by a mix of audio-visual records, FeelOpo intends to build "the beat of Oporto" through striking visual narratives.info:eu-repo/semantics/publishedVersio

Improved Sustainability in Wine Industry Byproducts: A Scale-up and Economical Feasibility Study for High-Value Compounds Extraction Using Modified SC-CO2

[Image: see text] The objective of the present work was to optimize the operating conditions (P, T cosolvent %) and to study the scale-up and the feasibility of the supercritical fluid extraction (SFE) process for polyphenols from grape pomace, the main solid byproduct of the wine industry. Pilot-scale equipment (1 L extraction vessel) was used to study the scale-up prediction for extraction vessels of 50, 100, 500, and 1000 L capacity. The adopted scale-up criteria consisted of maintaining and keeping constant the solvent mass-to-feed mass ratio and the bed geometry dimension. The results indicated an excellent predictive level obtained by Sovová’s model and success of the adopted scale-up criteria. At industrial scale, yields were close to 2.3 g(GAE)/100 g(DM), a value obtained using the pilot-scale equipment. High concentrations of high-added-value phenols such as cis-resveratrol glucoside, cis-coutaric acid, trans-p-coumaric acid, quercetin, and proanthocyanidins were found in the extract. An economic evaluation of the process indicated the feasibility of an industrial SFE plant with a capacity of 500 L for producing in 60 min an extract with an expected phenolics’ concentration of approximately 133 g(GAE)/kg (extract) at an estimated 67€ /kg(extract) cost of manufacturing. Notably, all values are better than those currently reported in the literature

FeelOpo: an interactive installation to explore the “beat of Oporto”

FeelOpo is an interactive art installation that allows contact with fragments of the immaterial heritage of the Oporto City in the North of Portugal. Through location-based storytelling of the living city, this interactive installation allows visitors to explore, at different levels, several typical characteristics of this city, addressing aspects of cultural identity based on contrasting images and videos. The visitors feel and explore visual stories of the live city, through a process of appropriation and articulation of these narratives, generating an expansion of this intangible heritage.info:eu-repo/semantics/publishedVersio

Continuous decolourization of a sugar refinery wastewater in a modified rotating biological contactor with Phanerochaete chrysosporium immobilized on polyurethane foam disks

Phanerochaete chrysosporium immobilized on different support materials, such as polyurethane foam (PUF) and scouring web (SW), in shake cultures, was able to decolourize efficiently the sugar refinery effluent in a long-term repeated-batch operation. The decolourization medium composition was optimized using PUF-immobilized fungus. Addition of glucose was obligatory and the minimum glucose concentration was found to be 5 g/l. A rotating biological contactor (RBC) containing P. chrysosporium immobilized on PUF disks was operated with optimized decolourization medium, in continuous mode with a retention time of 3 days. By simply reversing the feed inlet of the reactor, after 17 days of operation, it was possible to double the active fungal lifetime. During the course of operation the colour, total phenols and chemical oxygen demand were reduced by 55, 63 and 48%, respectively.PEDIP Program - Project EUREKA EUROAGRI 1974 RESINAS

A terceirização e as mulheres

O presente artigo objetiva tratar do maior impacto da terceirização de serviços no Brasil sobre as mulheres trabalhadoras. Para que se compreenda melhor o tema central, serão antes abordados o conceito e histórico da terceirização e seus impactos sobre os trabalhadores brasileiros de maneira geral

Saúde no Brasil: a sífilis na atualidade

Monografia apresentada ao Setor de Pós-graduação da Universidade do Extremo Sul Catarinense - UNESC, para a obtenção do título de especialista em Análises Clínicas.A importância deste estudo é ressaltar a necessidade em conhecer as causas que levam o indivíduo a adquirir a Sífilis e acrescentar diferentes conhecimentos que possam servir de parâmetro para sua prevenção. Trata de uma revisão bibliográfica que teve como dados livros, sites e revistas científicas. Esta pesquisa tem como objetivo geral demonstrar as fases da doença, o diagnóstico por meio das Análises Clínicas e enfatizar a importância da prevenção como ação primordial no crescimento de casos de Sífilis, especialmente na Sífilis congênita onde infecta mais criança por transmissão vertical pelo Treponema Pallidum do que o próprio Vírus da Imunodeficiência Humana tão temida pela população. A baixa idade das primeiras relações sexuais, a variabilidade de parceiros, o não uso de preservativo e o uso de drogas ilícitas são apontados como fatores de risco às doenças sexualmente transmissíveis. Contudo, é possível notar que a Sífilis é uma patologia que deve ser prevenida, sendo extremamente curável. Dessa forma, é possível vencer o desafio e alcançar a sua erradicação