The Infrared-X-ray continuum correlation in Active Galactic Nuclei

The correlation between the soft X-ray and near infrared emission from AGN is analysed using composite models by the code SUMA. We find new evidences for differences in ranges of parameters which characterize the NLR of Seyfert galaxies and LINERs. Results obtained by modelling the Einstein and the ROSAT samples of galaxies are in full agreement. In order to fit the infrared and X-ray continua, an eta factor is defined, which accounts for the emitting area of the cloud. If the infrared emission is due to bremsstrahlung and comes from the same cloud producing the soft X-rays, the eta values obtained from both emissions must be the same. Therefore, if eta_IR < eta_soft-X there must be a strong contribution of soft X-rays from the active centre. From the eta values we expect to identify the objects that could present strong variability. \Comment: 11 pages,13 figures, in press in MNRAS. in press in MNRA

Are air-borne mycotoxins a public health concern in Portugal?

Introduction - Microscopic filamentous fungi, under suitable environmental conditions, can lead to the production of highly toxic chemical substances, commonly known as mycotoxins. The most widespread and studied mycotoxins are metabolites of some genera of moulds such as Aspergillus, Penicillium and Fusarium. Quite peculiar conditions may influence mycotoxin biosynthesis, such as climate, geographical location, cultivation practices, storage and type of substrate. Toxicity has been extensively investigated for the most important mycotoxins, such as aflatoxins, ochratoxin A and Fusarium toxins, and much information derived from toxicokinetics in animal models has also been obtained. The adverse effects are mainly related to genotoxicity, carcinogenicity, mutagenicity, teratogenicity and immunotoxicity. Aim of the study - To identify fungal species able to produce important mycotoxins in different Portuguese settings

Fungal contamination in one hotel room: Does carpet coating in the floor enhance fungal contamination?

Study developed in order to know the carpet influence when used in the floor of a hotel room. Twelve air samples of 250L (six in a room with carpet and six more in a room with wood floor) were collected through an impaction method with a flow rate of 140 L/min onto malt extract agar (MEA) supplemented with chloramphenicol (0.05%), using the Millipore air Tester (Millipore), during cleaning activities. Outdoor sample was also performed to be used as a reference. Surface samples from floor and desks, taken at the same time, were collected by the swabbing method. to 7 days. Besides fungal contamination, we also assessed particulate matter contamination in both rooms during the same cleaning tasks. In the analyzed sur- faces, isolates belonging to Aspergillus fumigatus complex were the only fungi found in the carpeted room, whereas in the other room we found Penicllium sp. (63.6%) and Aspergillus sp. (13.6%) as the most frequent genera. In the case of particles the room with carpet obtained significant higher values for both metrics (PMC and PNC), showing that carpet may has influence on particles’ contamination of the room

Volatile Organic Compounds in Healthcare facilities - A study developed in Primary Healthcare Centers in Lisbon

Trabalho apresentado em International Conference in Environmental Health - ICEH2019, 2019, Lisboa, PortugalN/

Comparison of indoor and outdoor fungi and particles in poultry units

A descriptive study was developed in order to compare indoor and outdoor air contamination caused by fungi and particles in seven poultry units. Twenty eight air samples of 25 litters were collected through the impaction method on malt extract agar. Air sampling and particles concentration measurement were done in the interior and also outside premises of the poultries’ pavilions. Regarding the fungal load in the air, indoor concentration of mold was higher than outside air in six poultry units. Twenty eight species / genera of fungi were identified indoor, being Scopulariopsis brevicaulis (40.5%) the most commonly isolated species and Rhizopus sp. (30.0%) the most commonly isolated genus. Concerning outdoor, eighteen species/genera of fungi were isolated, being Scopulariopsis brevicaulis (62.6%) also the most isolated. All the poultry farms analyzed presented indoor fungi different from the ones identified outdoors. Regarding particles’ contamination, PM2.5, PM5.0 and PM10 had a statistically significant difference (Mann-Whitney U test) between the inside and outside of the pavilions, with the inside more contaminated (p=.006; p=.005; p=.005, respectively). The analyzed poultry units are potential reservoirs of substantial amounts of fungi and particles and could therefore free them in the atmospheric air. The developed study showed that indoor air was more contaminated than outdoors, and this can result in emission of potentially pathogenic fungi and particles via aerosols from poultry units to the environment, which may post a considerable risk to public health and contribute to environmental pollution

Marketing de eventos: O caso da concentração de motos de Faro, Portugal

A crescente concorrência a nível nacional e internacional leva as organizações a definirem estratégias, produtos e serviços orientados para os clientes visando a sua satisfação e fidelização. Estas são também preocupações das organizações responsáveis pela gestão de eventos. O objectivo principal deste trabalho é analisar as motivações, o grau de satisfação e o grau de fidelização dos participantes na Concentração de Motos de Faro, Portugal, um evento que todos os anos reúne mais de vinte mil motociclistas de toda a Europa nesta cidade, transformando-a num destino turístico. Os dados foram obtidos através da aplicação de 1019 questionários no Campus da 28ª Concentração de Motos de Faro. Os principais resultados sugerem que as principais motivações que trazem os motociclistas ao evento prendem-se, sobretudo, com o convívio e com a necessidade de viver novas experiências. Os participantes denotam níveis elevados de satisfação e de fidelização ao evento

Temperature Fluctuations and Abundances in HII Galaxies

There is evidence for temperature fluctuations in Planetary Nebulae and in Galactic HII regions. If such fluctuations occur in the low-metallicity, extragalactic HII regions used to probe the primordial helium abundance, the derived 4He mass fraction, Y_P, could be systematically different from the true primordial value. For cooler, mainly high-metallicity HII regions the derived helium abundance may be nearly unchanged but the oxygen abundance could have been seriously underestimated. For hotter, mainly low-metallicity HII regions the oxygen abundance is likely accurate but the helium abundance could be underestimated. The net effect is to tilt the Y vs. Z relation, making it flatter and resulting in a higher inferred Y_P. Although this effect could be large, there are no data which allow us to estimate the size of the temperature fluctuations for the extragalactic HII regions. Therefore, we have explored this effect via Monte Carlos in which the abundances derived from a fiducial data set are modified by \Delta-T chosen from a distribution with 0 < \Delta-T < \Delta-T_max where \Delta-T_max is varied from 500K to 4000K. It is interesting that although this effect shifts the locations of the HII regions in Y vs. O/H plane, it does not introduce any significant additional dispersion.Comment: 11 pages, 9 postscript figures; submitted to the Ap

Efeito da adubação mineral na produção de matéria seca de pimenta longa (Piper hispidinervium).

bitstream/item/60320/1/CPATU-PA180.pd

Motivações, satisfação e fidelização nos eventos: o caso da concentração de motos de Faro

Dissertação de mest., Marketing, Faculdade de Economia, Univ. do Algarve, 2012A crescente concorrência a nível nacional e internacional leva as organizações a definirem estratégias, produtos e serviços orientados para os clientes visando a sua satisfação e fidelização. O objectivo principal deste estudo é analisar as motivações, o grau de satisfação e o grau de fidelização dos participantes na Concentração de Motos de Faro, um evento que todos os anos reúne mais de vinte mil motociclistas de toda a Europa nesta cidade. Os dados foram obtidos através da aplicação de 1019 questionários no Campus da 28ª Concentração de Motos de Faro. Para a análise e tratamento dos dados obtidos optou-se pelo programa estatístico SPSS, o qual possibilitou a realização das análises estatísticas consideradas necessárias face aos objectivos do trabalho. Os principais resultados sugerem que as principais motivações que trazem os motociclistas ao evento prendem-se, sobretudo, com o convívio e com a necessidade de viver novas experiências. Os participantes denotam níveis elevados de satisfação e de fidelização ao evento