HIMmaterial: exploring new hybrid media for immersive drawing and collage

We propose an installation that explores Hybrid Immersive Models (HIM), the conjunction of digital VR panoramas with physical, handmade spherical perspectives and anamorphoses, as a new hybrid art medium that connects traditional drawing with digital, immersive art, creating a dialogue between material and immaterial forms of visual expression.Author A. B. Araújo was partially supported by Portuguese National Funds through FCT project UID/Multi/04019/2013. Special thanks go to Prof. Adriana Rossi from University of Campania “Luigi Vanvitelli”, Prof. Salvatore Barba from University of Salerno and NAOS Consulting Ltd.info:eu-repo/semantics/publishedVersio

Biological Activities of Phenolic Compounds Present in Virgin Olive Oil

The Mediterranean diet is associated with a lower incidence of atherosclerosis, cardiovascular disease, neurodegenerative diseases and certain types of cancer. The apparent health benefits have been partially ascribed to the dietary consumption of virgin olive oil by Mediterranean populations. Much research has focused on the biologically active phenolic compounds naturally present in virgin olive oils to aid in explaining reduced mortality and morbidity experienced by people consuming a traditional Mediterranean diet. Studies (human, animal, in vivo and in vitro) have demonstrated that olive oil phenolic compounds have positive effects on certain physiological parameters, such as plasma lipoproteins, oxidative damage, inflammatory markers, platelet and cellular function, antimicrobial activity and bone health. This paper summarizes current knowledge on the bioavailability and biological activities of olive oil phenolic compounds

Insights for litter management

Funding Information: This research was supported by the Fundação para a Ciência e Tecnologia (FCT), Portugal [grant SFRH/BD/147085/2019 to Sara Bettencourt]. Also had the support of FCT, Portugal through the strategic projects ( UIDB/04292/2020 awarded to MARE and UID/AMB/04085/2019 to CENSE) and through project LA/P/0069/2020 granted to the Associate Laboratory ARNET, Portugal and financing of Fundo Azul do Ministério do Mar, Portugal through the project ALIMAR – Ação Lixo Marinho! ( FA_06_2017_081 ). Funding Information: The authors thank Diogo Freitas for statistical analysis support, all the volunteers who participated in the marine litter samplings over the two years, and the Portuguese Institute for Sea and Atmosphere (IPMA) for kindly providing the meteorological stations data. This research was supported by the Fundação para a Ciência e Tecnologia (FCT), Portugal [grant SFRH/BD/147085/2019 to Sara Bettencourt]. Also had the support of FCT, Portugal through the strategic projects (UIDB/04292/2020 awarded to MARE and UID/AMB/04085/2019 to CENSE) and through project LA/P/0069/2020 granted to the Associate Laboratory ARNET, Portugal and financing of Fundo Azul do Ministério do Mar, Portugal through the project ALIMAR – Ação Lixo Marinho! (FA_06_2017_081). Publisher Copyright: © 2023 The Author(s)Marine litter is a complex and multi-dimensional problem, with beach litter surveys being an important cost-effective tool for monitoring and assessing marine litter pollution. In Madeira Island (Portugal, NE Atlantic), a region awarded several times as ‘Europe's Leading Island Destination’ and with a particular orography, there is a scarce understanding of the situation of marine debris. A two-year monitoring (July 2020 to April 2022) of macro-litter was conducted on two beaches in Funchal, the largest city and capital of the island. The abundance, composition, sources, and pathways of the stranded marine litter were assessed following OSPAR guidelines. During the two years, a total of 14,265 items were recorded. The mean litter density was found to be 0.29 items/m2 and the beaches’ clean index ranged between ‘very clean’ and ‘dirty’. Cigarette butts (30.9%) and plastic objects (30.7%) were the most frequent marine litter items, followed by paper/cardboard (9.2%) and metal items (8.3%). The composition of the litter showed that most of the monitored marine debris has a land-based source, with a strong contribution from smoking-related activities and littering in streams. By characterizing the waste and identifying its source, it was possible to propose integrated management actions at a local level. Outreach and raising awareness campaigns, together with actions to limit single-use plastic items and stimulate a circular economy, could contribute to limit marine litter on the studied island but also in other regions with similar profiles.publishersversionpublishe

Accelerating learning for pro-poor health markets

CommentaryBackground: Given the rapid evolution of health markets, learning is key to promoting the identification and uptake of health market policies and practices that better serve the needs of the poor. However there are significant challenges to learning about health markets. We discuss the different forms that learning takes, from the development of codified scientific knowledge, through to experience-based learning, all in relationship to health markets. Discussion: Notable challenges to learning in health markets include the difficulty of acquiring data from private health care providers, designing evaluations that capture the complex dynamics present within health markets and developing communities of practice that encompass the diverse actors present within health markets, and building trust and mutual understanding across these groups. The paper proposes experimentation with country-specific market data platforms that can integrate relevant evidence from different data sources, and simultaneously exploring strategies to secure better information on private providers and health markets. Possible approaches to adapting evaluation designs so that they are better able to take account of different and changing contexts as well as producing real time findings are discussed. Finally capturing informal knowledge about health markets is key. Communities of practice that bridge different health market actors can help to share such experience-based knowledge and in so doing, may help to formalize it. More geographically-focused communities of practice are needed, and such communities may be supported by innovation brokers and/or be built around member-based organizations. Summary: Strategic investments in and support to learning about health markets can address some of the challenges experienced to-date, and accelerate learning that supports health markets that serve the poor.DFI

The Gruenberg-Kegel graph of finite solvable rational groups

A finite group $G$ is said to be \textit{rational} if every character of $G$ is rational-valued. The \textit{Gruenberg-Kegel graph} of a finite group $G$ is the undirected graph whose vertices are the primes dividing the order of $G$ and the edges join different primes $p$ and $q$ whenever $G$ contains an element of order $pq$. In this paper, we complete the classification of the Gruenberg-Kegel graphs of finite solvable rational groups initiated in \cite{BKMdR}.Comment: 6 page

Efeitos no esmalte dentário de produtos branqueadores contendo flúor

Os produtos de branqueamento dentário estão associados a alterações no conteúdo mineral do esmalte. No sentido de minimizar a desmineralização, têm surgido no mercado produtos que advogam a incorporação de flúor (F), responsável por diminuir a solubilidade da hidroxiapatite (HAp) constituinte do esmalte e aumentar a resistência à erosão dentária. Não existindo estudos que relacionem simultaneamente a assimilação de flúor, as alterações da dureza e as variações a nível molecular e elementar do esmalte, o presente estudo propõe-se a quantificar de forma mais abrangente o potencial protetor do flúor no contexto do branqueamento dentário, comparando o efeito de produtos com e sem este elemento através de: quantificação da incorporação de F por emissão gama induzida por protões (PIGE); avaliação da variação na estrutura cristalina da HAp por via da determinação da razão de despolarização do pico de alongamento simétrico do fosfato (PO43-) nos espectros de Raman; variações de dureza pelo teste de microdureza de Vickers; e avaliação das variações do número atómico efetivo do esmalte através da razão entre intensidade dos picos de dispersão Compton e Rayleigh do elemento do ânodo nos espectros de espectroscopia de raios X dispersiva em energia (EDXRF). O estudo envolveu a utilização de 40 amostras de esmalte humano hígido divididas aleatoriamente por 4 grupos, sujeitos ao protocolo de branqueamento de um produto com peróxido de carbamida (PC) ou peróxido de hidrogénio (PH) como agentes ativos: (A) Opalescence 16% PC com flúor, (B) Paint On Plus 6% PH sem flúor, (C) Opalescence 6% PH com flúor e (D) VivaStyle 16% PC. Um quinto grupo (AP), constituído por 10 amostras polidas, foi sujeito a branqueamento por Opalescence 16%PC com flúor. As amostras foram conservadas em saliva humana entre aplicações. Todos os grupos foram analisados antes e após tratamento por espectroscopia Raman. Os grupos sujeitos a produtos fluoretados (A, C e AP) e um grupo de controlo negativo (D) foram analisados por PIGE. O grupo AP foi analisado pelo teste de Vickers. A avaliação da razão Rayleigh/Compton por EDXRF foi realizada em amostras de esmalte numa fase pré-branqueamento e considerada inconclusiva. A utilização dos produtos de branqueamento contendo flúor provocou um aumento da concentração deste elemento no tecido e a diminuição da razão de despolarização do esmalte, indicando aumento da mineralização superficial. De entre os produtos sem flúor, o estado de mineralização manteve-se inalterado com o produto Vivastyle e aumentou sob o efeito do produto Paint On Plus. O polimento do esmalte, necessário para aplicação do teste de Vickers, conduziu ao aumento da suscetibilidade à erosão, traduzida pela diminuição da dureza e aumento da razão de despolarização. O resumo não usa abreviaturas. As mesmas são apenas definidas mais tarde na introduçã

El coaching en las organizaciones en el ámbito español

El coaching está de moda desde hace años, especialmente en el campo empresarial, donde destaca su gran auge. El objetivo de este trabajo es analizar su evolución y sus diversas aplicaciones dentro de las organizaciones. Para ello, se hace un análisis documental de contenidos de dos revistas de recursos humanos, durante un periodo de varios años, lo que permite detectar evidencias empíricas sobre este fenómeno en el ámbito español.The coaching is in fashion for years, especially in the business field, which emphasizes its great boom. The objective of this work is to analyze its evolution and its various applications within organizations. To do this, a documentary analysis of the contents of two human resources journals is done over a period of several years, which allows us to detect empirical evidence on this phenomenon in the Spanish context.Departamento de Organización de Empresas y Comercialización e Investigación de MercadosGrado en Administración y Dirección de Empresa