Results | University of Saint Joseph Research Output

Sarmento, M. R., Oliveira, J. C., & Boulton, R. B. (2000). Selection of low swelling materials for protein adsorption from white wines. International Journal of Food Science & Technology, 35(1), 41–47. https://doi.org/10.1046/j.1365-2621.2000.00340.x

The protein adsorption capacity of different materials was evaluated to assess their potential efficacy as alternative adsorbents for the removal of proteins from wines, with the purpose of finding suitable low-swelling materials that could be used in a percolated bed. The adsorbents tested were thermally treated sodium bentonite, low-swelling adsorbing clays, ion exchange resins and other protein adsorbents (silica gel, hydroxyapatite and alumina). The materials were evaluated by analysing both the capacity to stabilize untreated white wines, according to a heat test, and by characterizing the adsorption isotherms of bovine serum albumin (BSA) in a model wine (water, ethanol and K-bitartrate). Breakthrough curves in a packed bed were determined experimentally for some materials, showing the influence of the adsorption isotherm shape. Some ion-exchange resins showed a favourable behaviour and have good potential as alternative adsorbents.

Chan, S. K., Li, S. P., Titus, & Ma, W. (2009). Crticial analysis of the policy and implementation of the environmental protection education of Macao. 17–31.

Ezeka, F. A. N., & Chan, S. K. (2010, April 10). Achieving acceptable air quality in Macao through sustainable transportation. International symposium on the progrees of technology in environmental impact assessment, 2010 Macao international environmental co-operation forum & exhibition, Macao SAR, China.

Dias, Á., Früh-Green, G. L., Bernasconi, S. M., & Barriga, F. J. A. S. (2011). Geochemistry and stable isotope constraints on high-temperature activity from sediment cores of the Saldanha hydrothermal field. Marine Geology, 279(1–4), 128–140. https://doi.org/10.1016/j.margeo.2010.10.017

Gonçalves, D., & Oliveira, R. F. (2011). Hormones and Sexual Behavior of Teleost Fishes. In Hormones and Reproduction of Vertebrates (pp. 119–147). Elsevier. https://doi.org/10.1016/B978-0-12-375009-9.10007-4

Oliveira, R. F., Simões, M. G., Gonçalves, D., & Saraiva, J. L. (2011). Plasticity in reproductive behaviour in two populations of the peacock blenny. Behaviour, 148(14), 1457–1472. https://doi.org/10.1163/156853911X617089

Fagundes, T., Simões, M. G., Gonçalves, D., & Oliveira, R. F. (2012). Social cues in the expression of sequential alternative reproductive tactics in young males of the peacock blenny, Salaria pavo. Physiology & Behavior, 107(3), 283–291. https://doi.org/10.1016/j.physbeh.2012.07.011

Saraiva, J. L., Pignolo, G., Gonçalves, D., & Oliveira, R. F. (2012). Interpopulational variation of the mating system in the peacock blenny Salaria pavo. Acta Ethologica, 15(1), 25–31. https://doi.org/10.1007/s10211-011-0104-y

Cardoso, S. D., Gonçalves, D., Robalo, J. I., Almada, V. C., Canário, A. V. M., & Oliveira, R. F. (2013). Efficient isolation of polymorphic microsatellites from high-throughput sequence data based on number of repeats. Marine Genomics, 11, 11–16. https://doi.org/10.1016/j.margen.2013.04.002

Cruz, M. I., Dias, Á., Pedersen, R. B., Relvas, J. M. R. S., Fonseca, R., & Barriga, F. J. A. S. (2013). Sulphide mineralization in Arctic seafloor hydrothermal fields: extending the European exploration area to the Far North. ERA-MIN.

Cruz, M. I., Marques, A. F., Dias, Á., Pedersen, R., Relvas, J. M. R. S., & Barriga, F. J. A. S. (2013). Sulfide Sites in the Arctic Ocean: Jan Mayen and Loki’s Castle, Mineralogical Magazine. Goldschmidt. https://goldschmidtabstracts.info/abstracts/abstractView?id=2013003606

Saraiva, J. L., Gonçalves, D., & Oliveira, R. F. (2013). Ecological modulation of reproductive behaviour in the peacock blenny: a mini-review. Fish Physiology and Biochemistry, 39(1), 85–89. https://doi.org/10.1007/s10695-012-9658-5

Amuno, S. A. (2013). Potential Ecological Risk of Heavy Metal Distribution in Cemetery Soils. Water, Air, & Soil Pollution, 224(2), 1435. https://doi.org/10.1007/s11270-013-1435-2

In this paper, preliminary investigation was conducted to evaluate the potential ecological risk of heavy metals contamination in cemetery soils. Necrosol samples were collected from within and around the vicinity of the largest mass grave in Rwanda and analyzed for heavy metal concentrations using total digestion–inductively coupled plasma mass spectrometry and instrumental neutron activation analysis. Based on the concentrations of As, Cu, Cr, Pb, and Zn, the overall contamination degree (Cdeg) and potential ecological risks status (RI) of the necrosols were determined. The preliminary results revealed that the associated cemetery soils are only contaminated to a low degree. On the other hand, assessment of the potential ecological risk index (RI) revealed that cumulative heavy metal content of the soil do not pose any significant ecological risks. These findings, therefore, suggest that, while cemetery soils may be toxic due to the accumulation of certain heavy metals, their overall ecological risks may be minimal and insignificant.

Cruz, M. I., Marques, F. A. M., Dias, Á., Pedersen, R., & Barriga, F. (2014). Sr and Nd isotopic composition of Jan Mayen and Loki’s Castle: a progress report. 43rd Underwater Mining Institute.

Gonçalves, D. (2014). Alternative pathway history in a fish with plastic reproductive tactic. Functional Ecology.

Gonçalves, D. (2014). Oestradiol and prostaglandin F2α regulate sexual display in female of a sex-role reversed fish. 281(1778).

Amorim, M. C. P., Vasconcelos, R. O., & Fonseca, P. J. (2015). Fish Sounds and Mate Choice. In F. Ladich (Ed.), Sound Communication in Fishes (pp. 1–33). Springer. https://doi.org/10.1007/978-3-7091-1846-7_1

Fish acoustic signals associated with mating behaviour are typically low-frequency sounds produced by males when in close proximity to females. However, some species make sounds that serve the function and follow the design of advertisement calls, well known in insects, anurans, and birds. Close-range courtship acoustic signals may be used by females in mate assessment as they contain information of male quality such as size and condition. For example, sound-dominant frequency, amplitude, and fatigue resistance may signal body size whereas pulse period (i.e. muscle contraction rate) and calling activity are related with body condition in some species. Some signal features, such as sound pulse number, may carry multiple messages including size and condition. Playback experiments on mate choice of a restricted number of species suggest that females prefer vocal to silent males and may use sound frequency, amplitude, and mainly calling rateCalling ratewhen assessing males. The assessment of males by females becomes more challenging when males engage in choruses or when sounds are otherwise masked by anthropogenic noise but almost nothing is known about how these aspects affect mating decisions and fish reproductive success.

Dias, Á., & Barriga, F. (2015). Saldanha hydrothermal field: the role of the sediment-cover in the preservation of ore-forming minerals. Third InterRidge Theoretical Institute: Magmatic and Tectonic Processes and Seabed Resources at Mid-Ocean Ridges. T2-09, Hangzhou, China.

Fagundes, T., Simões, M. G., Saraiva, J. L., Ros, A. F. H., Gonçalves, D., & Oliveira, R. F. (2015). Birth date predicts alternative life‐history pathways in a fish with sequential reproductive tactics. Functional Ecology, 29(12), 1533–1542. https://doi.org/10.1111/1365-2435.12465

Tagulao, K. (2015). Bringing Life Science to Primary and Secondary School Students in Macao: From Genes to Environment [Research Report]. University of Saint Joseph.

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