FP-ENAS - Energy, Environment and Health Research Unit / Unidade de Investigação em Energia, Ambiente e Saúde
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This community is intended to divulge the most significant items issued by the research team currently working in the FP-ENAS (UFP Energy, Environment and Health Research Unit of University Fernando Pessoa). The community is subdivided in two sub-communities corresponding to the current main Research Groups, viz. "3ERL - Energy, Environment and Environmental & Public Health Research Laboratories", and "CEBIMED - Biomedical Research Centre". / Esta comunidade tem como objetivo a divulgação dos documentos mais significativos produzidos por membros da unidade de I&D FP-ENAS (Unidade de Investigação UFP em Energia, Ambiente e Saúde da Universidade Fernando Pessoa). A comunidade está subdividida nas seguintes duas subcomunidades correspondentes aos dois Grupos de Investigação atualmente em atividade na Unidade: "3ERL - Laboratório de Investigação em Energia, Ambiente e Saúde Ambiental e Pública” e "CEBIMED – Centro de Estudos em Biomedicina".
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- Recent Developments in Logging Techniques and Interpretation in IndonesiaPublication . Pirard, Yves; Prins, Wliliam J.; Cramez, Carlos
- Allochthonous salt, structure and stratigraphy of the north-eastern Gulf of Mexico. Part I: StratigraphyPublication . Wu, Shengyu; Vail, Peter R.; Cramez, CarlosMajor sequences boundaries associated with eustatic sea level changes are correlated to the general stratigraphy of the north-eastern Gulf of Mexico.
- Allochthonous salt, structure and stratigraphy of the north-eastern Gulf of Mexico. Part II: StructurePublication . Wu, Shengyu; Bally, Albert W.; Cramez, CarlosThe Kinematic evolution of allochthonous salt in the north-eastern Gulf of Mexico proceeds in three stages. (1) Since the Middle Jurassic deposition, the Louann Salt was loaded by sediments causing episodic basinwartd movement of the salt, ultimately leading to large concentrations of salt masses in a slope environment by the end of the Lower Cretaceous. (2) A regime of starved sedimentation during Late Cretaceous and Early Oligocene is responsible for the stabilization of these early salt accumulations. (3) With renewed rapid accumulation of sediments, during the Neogene and pliocene, extensive allochthonous salt tongues and shetts formed by gravity spreading within the younger sediments of the slope. Autochthonous salt,allochthonous salt and detached allochthonous salt are typical stages of evolution. Major down to the basin growth faults separate allochthonous salt sheets from their original feeder stocks. Extension along down to the basin master growth faults in compensated mainly by salt withdrawal and partly by basinward shortening.
- Optical Morphology of Hydrocarbons and Oil Progenitors in Sedimentary Rocks- Relations with Geochemical ParametersPublication . Alpern, B.; Lemos de Sousa, M. J.; Pinheiro, H. J.The objective of the present research...
- Raft tectonics in the Kwanza Basin, AngolaPublication . Duval, Bernard; Cramez, Carlos; Jackson, M. P. A.Raft tectonics (tectonique en radeaux) allows the extreme thin-skinned extension of overburden over a dêcollement of thin salt or other evaporites.
- Stratigraphic Cycles and Major Marine Source RocksPublication . Duval, Bernard C.; Cramez, Carlos; Vail, Peter R.
- Detection and evaluation of hydrocarbons in source rocks by fluorescence microscopyPublication . Alpern, B.; Lemos de Sousa, M. J.; Pinheiro, H. J.; Zhu, X.In pursing the detection of hydrocarbons in sedimentary rocks by conventional petrological methods, an attempt has been made to correlate standard fluorescence parameters with the quality and quantity of hydrocarbons present in crushed rocks embedded in epoxy resin. The capacity of the embedding resin, commonly used in the preparation of petrographic samples, to extract and physically fix hydrocarbons is recognized. This phenomenon permits one to measure monochromatic fluorescence parameters, I and
- A methodology for parameter estimation in seaweed productivity modellingPublication . Duarte, Pedro; Ferreira, JoãoThis paper presents a combined approach for parameter estimation in models of primary production. The focus is on gross primary production and nutrient assimilation by seaweeds. A database of productivity determinations, biomass and mortality measurements and nutrient uptake rates obtained over one year for Gelidium sesquipedale in the Atlantic Ocean off Portugal has been used. Annual productivity was estimated by harvesting methods, and empirical relationships using mortality/ wave energy and respiration rates have been derived to correct for losses and to convert the estimates to gross production. In situ determinations of productivity have been combined with data on the light climate (radiation periods, intensity, mean turbidity) to give daily and annual productivity estimates. The theoretical nutrient uptake calculated using a 'Redfield ratio' approach and determinations of in situ N and P consumption by the algae during incubation periods have also been compared. The results of the biomass difference and incubation approaches are discussed in order to assess the utility of coefficients determined in situ for parameter estimation in seaweed production models.
- Presentation of the Methodology Elaborated for Optical Analyses of Borehole Samples for Oil ProspectionPublication . Alpern, B.; Lemos de Sousa, M. J.; Pinheiro, H. J.; Marques, M. M.; Zhu, X.
- Source rock/dispersed organic matter characterization-TSOP research subcommitee resultsPublication . Teerman, S. C.; Cardott, B. J.; Harding, R. W.; Lemos de Sousa, M. J.; Logan, D. R.; Pinheiro, H. J.; Reinhardt, M.; Thompson-Rizer, C. L.; Woods, R. A.Because sedimentary organic matter consists of a diverse mixture of organic components with different properties, a combination of chemical and petrographic results offers the most complete assessment of source rock properties. The primary purpose of this Society for Organic Petrology (TSOP) subcommittee is to contribute to the standardization of kerogen characterization methods. Specific objectives include: (1) evaluation of the applications of different organic matter (petrographic) classifications and terminology, and (2) integration of petrographic and geochemical results. These objectives were met by completing questionnaires, and petrographic, geochemical and photomicrograph round-robin exercises. Samples that were selected for this study represent different petrographic and geochemical properties, and geologic settings to help identify issues related to the utilization of different classifications and techniques. Petrographic analysis of the organic matter was completed using both a prescribed classification and the individual classification normally used by each participant. Total organic carbon (TOC), Rock-Eval pyrolysis and elemental analysis were also completed for each sample. Significant differences exist in the petrographic results from both the prescribed and individual classifications. Although there is general agreement about the oil- vs gas-prone nature of the samples, comparison of results from individual classifications is difficult due to the variety of nomenclature and methods used to describe an organic matter assemblage. Results from the photomicrograph exercise document that different terminology is being used to describe the same component. Although variation in TOC and Rock-Eval data exists, geochemical results define kerogen type and generative potential. Recommendations from this study include: (1) A uniform organic matter classification must be employed, which eliminates complex terminology and is capable of direct correlation with geochemical parameters. (2) A standardized definition and nomenclature must be used for the unstructured (amorphous) organic matter category. Subdivisions of this generalized amorphous category are needed to define its chemical and environmental properties. (3) Standardized techniques including multimode illumination, types of sample preparations and data reporting will help eliminate variability in the type and amount of organic components reported.