Cosmology with intensity mapping techniques using atomic and molecular lines

We present a systematic study of the intensity mapping technique using updated models for the different emission lines from galaxies and identify which ones are more promising for cosmological studies of the post reionization epoch. We consider the emission of ${\rm Ly\alpha}$, ${\rm H\alpha}$, H$\beta$, optical and infrared oxygen lines, nitrogen lines, CII and the CO rotational lines. We then identify that ${\rm Ly\alpha}$, ${\rm H\alpha}$, OII, CII and the lowest rotational CO lines are the best candidates to be used as IM probes. These lines form a complementary set of probes of the galaxies emission spectra. We then use reasonable experimental setups from current, planned or proposed experiments to access the detectability of the power spectrum of each emission line. Intensity mapping of ${\rm Ly\alpha}$ emission from $z=2$ to 3 will be possible in the near future with HETDEX, while far-infrared lines require new dedicated experiments. We also show that the proposed SPHEREx satellite can use OII and ${\rm H\alpha}$ IM to study the large-scale distribution of matter in intermediate redshifts of 1 to 4. We found that submilimeter experiments with bolometers can have similar performances at intermediate redshifts using CII and CO(3-2).Comment: 18 pages, 21 figures, 5 tables, published in MNRAS, typos correcte

Analytical characterization of ancient mortars from the archaeological roman site of Pisões (Beja, Portugal)

The analytical characterization of mortar samples from the roman archaeological site of Pisões, located in Southern Portugal, were carried out by means of X-ray diffractometry (XRD), thermogravimetry (TGADTA), optical and electron scanning microscopy (SEM-EDS), potentiometry and combustion analysis. The Pisões archaeological complex includes a villa rustica, characterized by well-preserved mosaics and thermal baths, as well as a mill and a mausoleum. Countryside villae epitomized the Romanization of the Iberian Peninsula for over six centuries (2nd century BCE–4th century CE). Nevertheless, most of the Roman villae identified in Portugal have not yet been systematically explored and studied. This study provides valuable data on the construction materials and techniques used in Roman times in the Iberian Peninsula. The careful selection of raw materials and the use of natural and artificial pozzolanic materials can explain the favourable state of conservation, mechanical strength and long-term durability of these mortars

Tráfego rodoviário e ruído ambiental: o caso dum parque urbano

O ruído produzido pelo tráfego rodoviário é a primeira causa de poluição sonora em meio urbano. Em Portugal, e em consonância com as tendências dos restantes países da União Europeia, esta situação encontra-se regulamentada por intermédio da publicação de legislação específica. Tal vem obrigar à consideração do ruído urbano em fase de planeamento, nomeadamente na elaboração de planos de ordenamento do território. A determinação dos níveis de ruído é conseguida de uma forma vantajosa com recurso a modelos de previsão que, em função do conhecimento do tráfego e das características físicas do meio, permitem a avaliação de diversos cenários e a quantificação do clima acústico de modo contínuo no espaço. É apresentada a aplicação de um destes modelos a um espaço verde urbano, sendo calculadosmapas acústicos para os cenários de tráfego presente e futuro e proposta uma solução para mitigação do ruído.The noise produced by road traffic is the first cause of acoustic pollution an urban environment. In Portugal as well as in most of the European Union countries, this problem is regulated through the publication of specific legislation. These regulations require the consideration of the outdoor noise levels in the planning process, namely in the elaboration of zoning plans. The calculation of the noise levels is carried out using simulation models which, based on traffic data and site physical characteristics, allow the evaluation of scenarios and the quantification of such levels in a continuous space. In this paper a noise simulation model is applied to an urban recreation park. Acoustic maps are calculated for present and future traffic scenarios, and a mitigation solution is developed for the noise levels generated

Hydrodynamic limits for the free Kawasaki dynamics of continuous particle systems

An infinite particle system of independent jumping particles is considered. Their constructions is recalled, further properties are derived, the relation with hierarchical equations, Poissonian analysis, and second quantization are discussed. The hydrodynamic limit for a general initial distribution satisfying a mixing condition is derived. The large time asymptotic is computed under an extra assumption

One Analytical Approach of Rashba-Edelstein Magnetoresistance in 2D Materials

We study analytically the Rashba-Edelstein magnetoresistance (REMR) in a structure made from an insulator ferromagnet, such as yttrium iron garnet (YIG), and a 2D material (2DM) with direct and inverse Rashba-Edelstein effects, such as SLG and MoS$_2$. Our results represent an efficient way of analyzing the Rashba-Edelstein effects

Evaluating critical noise disturbance zones in a mid-sized city

Publicado em "Sustainable Planning and Development", ISBN 1-85312-985-2Urban growth is continuously applying pressure over resources, infrastructures and facilities, affecting negatively the standard of living in cities. In this context, evaluating and monitoring the urban environmental quality has become a main issue particularly important when considered as a decision -support tool that contributes to more livable and sustainable cities. Viana do Castelo is a mid-sized city located on the northwest Portuguese seaside, which undertook the challenge of developing an environmental program leading to the integration in a Healthy Cities European Network. Within this program, the identification of urban noise levels and people exposure was considered a priority. The scientific toolbox adopted to develop the studies includes noise simulation models and a GIS platform. Based on traffic data and site physical characteristics, acoustical maps were created and overlaid together with the land-use-based acoustic zoning and population distribution layers. This combination was the basis for the identification of critical zones, both in terms of noise levels and people exposure to this kind of pollution. This paper aims to present the approach, including the theoretical framework, and to discuss the results of a summer scenario of noise exposure in the city center

Atmospheric emissions of one pulp and paper mill. Contribution to the air quality of Viana do Castelo

One of the most sensitive environmental impact of the pulp and paper mills is associated with the atmospheric pollution namely with sulphur compounds, particulate matter and nitrogen oxides. The study undertaken aimed to evaluate the influence of one pulp and paper mill to the air quality of a Portuguese city located in the vicinity. A range of numerical models were used to produce the concentration maps: the ADMS- Urban model for the pollutants dispersion; the Hills model to calculate air flow and turbulence over complex terrain, including the effects of variable surface roughness and EPER data (The European Pollutant Emission Register) to estimate the emissions factors