Probing dark energy beyond z=2z=2 with CODEX

Precision measurements of nature's fundamental couplings and a first measurement of the cosmological redshift drift are two of the key targets for future high-resolution ultra-stable spectrographs such as CODEX. Being able to do both gives CODEX a unique advantage, allowing it to probe dynamical dark energy models (by measuring the behavior of their equation of state) deep in the matter era and thereby testing classes of models that would otherwise be difficult to distinguish from the standard $\Lambda$CDM paradigm. We illustrate this point with two simple case studies.Comment: 4 pages, 4 figures; submitted to Phys. Rev.

New global tourism innovation in a post-coronavirus era

World capitalism has become capitalism of abundance, but decadent capitalism. Today's capitalism is potentially destructive of the planet on which we live. This text seeks to highlight some of the irrationalities underlying this destructive potential, taking the relation between tourism and innovation as a paradigmatic example. The conceptual, political and operational articulation of tourism with innovation is not an easy task to accomplish, and there are many misunderstandings to block its desired symbiosis. It is also quite clear that innovation, namely that which is mediated and valued solely by market and economic and financial performance criteria, induces production and consumption that have contributed to climate change and levels of unsustainability of the planet. This text has three objectives: to requalify the role of innovation in capitalist society, to reconceptualize the relationship between tourism and innovation and to identify some challenges that will test this relationship in the post-COVID-19 era.info:eu-repo/semantics/publishedVersio

Temperature dependence of the coercive field in single-domain particle systems

The magnetic properties of Cu97Co3 and Cu90Co10 granular alloys were measured over a wide temperature range (2 to 300K). The measurements show an unusual temperature dependence of the coercive field. A generalized model is proposed and explains well the experimental behavior over a wide temperature range. The coexistence of blocked and unblocked particles for a given temperature rises difficulties that are solved here by introducing a temperature dependent blocking temperature. An empirical factor gamma arise from the model and is directly related to the particle interactions. The proposed generalized model describes well the experimental results and can be applied to other single-domain particle system.Comment: 7 pages, 8 figures, revised version, accepted to Physical Review B on 29/04/200

Electronic state spectroscopy of C₂Cl₄

The VUV spectrum of C2Cl4 is reported in the energy range 3.8-10.8 eV (325-115 nm). Several photoabsorption features are observed for the first time, including a very weak low-lying band which is provisionally attributed to a π → π* triplet transition. Recent ab initio calculations of the molecule’s electronic transitions [Arulmozhiraja et al. J. Chem. Phys. 129 (2008) 174506] provide the basis for the present assignments below 8.5 eV. An extended ndπ series is proposed to account for several higher-energy Rydberg bands. The identification of vibrational structure, dominated by symmetric C=C and CCl2 stretching in excitations from the HOMO, largely agrees with previous spectroscopic studies. The present absolute photoabsorption cross sections cover a wider energy range than the previous measurements and are used to calculate UV photolysis lifetimes of this aeronomic molecule at altitudes between 20 and 50 km

Intrapatient variability of the pupillary pain index to remifentanil

info:eu-repo/semantics/publishedVersio

Electroencefalograma Interictal. Sensibilidade e Especificidade no Diagnóstico de Epilepsia

O electroencefalograma (EEG) é um método não invasivo, económico e acessível, universalmente utilizado na investigação da epilepsia. Realizámos uma revisão dos principais trabalhos sobre a prevalência de actividade epileptiforme em EEGs de doentes epilépticos e não epilépticos, com o objectivo de tirar conclusões sobre a sensibilidade e especificidade deste exame no diagnóstico de epilepsia. Concluímos que o primeiro EEG tem uma sensibilidade global de 50-55% podendo atingir os 92% com a repetição do exame e recurso a registos de sono e técnicas de activação. A especificidade atinge os 96%, sendo afectada por múltiplos factores

Analgesic interpatient variability of remifentanil assessed through pupillary dilation reflex

info:eu-repo/semantics/publishedVersio

The impact of the Polytechnic Institute of Setubal on the local economy

Este artigo analisa o impacto económico do Instituto Politécnico de Setúbal na região. Utilizando uma abordagem pelo lado da procura, mediu-se o impacto dos gastos dos estudantes, docentes e não docentes, bem como das aquisições de bens e serviços da própria instituição na economia, medindo o impacto no PIB, no emprego, bem como nos gastos totais para a economia. Foi utilizada uma abordagem quantitativa, através da aplicação de questionário a uma amostra aleatória representativa da população alvo. Os resultados revelam um forte impacto económico na região, estimado em 58 milhões de euros (1,77% do PIB dos concelhos de Setúbal e Barreiro) e a sua relevância enquanto empregador (o 2º maior em Setúbal e o 3º no Barreiro). Acresce a forte capacidade de fixar jovens na região para obterem a sua formação superior, com 60% dos estudantes locais a indicarem não ter mudado de residência, mas que iriam estudar para outro local caso o IPS não existisse e de reprodutividade do orçamento de Estado, transformando 1 euro recebido em mais de 3 euros na economia local.info:eu-repo/semantics/publishedVersio

Pupillary pain index correlates with postoperative pain scores in neurosurgical patients

info:eu-repo/semantics/publishedVersio