Results 41 to 50 of about 589,843 (301)

O instituto de coimbra e a análise química de águas minerais em portugal na segunda metade do Século XIX

open access: yesQuímica Nova, 2011
O Instituto, journal published by the Institute of Coimbra (IC), an academic society founded in this city in 1852, contains many articles on hydrology and chemical analysis of water for human consumption, written by well-known Portuguese chemists and ...
António José F. Leonardo   +2 more
doaj   +1 more source

Differential Item Functioning on the Patient Health Questionnaire 8 by Disease Subtype, Language, Sex, and Age Among People With Systemic Sclerosis: A Scleroderma Patient‐Centered Intervention Network Cohort Study

open access: yesArthritis Care &Research, EarlyView.
Objective Somatic items used in depression assessments can potentially overlap with symptoms related to physical illness, including systemic sclerosis (SSc). No studies have looked at whether somatic depression items may be influenced by diffuse versus limited SSc disease subtypes, which are associated with varying degrees of symptom presentation.
Sophie Hu   +110 more
wiley   +1 more source

Breaking Canons: Intersectional Feminism and Anti-Racism in the Work of Black Women Artists

open access: yesVista, 2020
In this essay, I will argue for the relevance of the visual production of several contemporary black women artists for the shattering of Eurocentric stereotypes and racist and patriarchal narratives, which, as legacies of the colonial and enslaving past,
Ana Balona de Oliveira
doaj   +1 more source

On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal [PDF]

open access: yes, 2009
The study of the climate in the past and the climate change in mainland Portugal using geothermal data has started in 1996. Reconstruction of ground surface temperature (GST) history from temperature logs measured in a 200 m deep borehole located 5 km ...
Correia, Antonio
core  

Halide‐Dependent Photoluminescence and Heavy‐Atom Effects in Low‐Melting Organic–Inorganic Manganese Halides

open access: yesAdvanced Functional Materials, EarlyView.
Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya   +22 more
wiley   +1 more source

Fronteira Portugal-Espanha e individualidade territorial [PDF]

open access: yes, 1997
PORTUGAL-SPAIN BORDER AREA AND ITS CREATIVE TENSION - The text evokes several nuances of the concept of the Portugal-Spain border: its shades of solidarity, complicity, opposition, agitation, confrontation and abandonment.
Carminda Cavaco
core   +2 more sources

Engineered Protein‐Based Ionic Conductors for Sustainable Energy Storage Applications

open access: yesAdvanced Materials, EarlyView.
Rational incorporation of charged residues into an engineered, self‐assembling protein scaffold yields solid‐state protein films with outstanding ionic conductivity. Salt‐doping further enhances conductivity, an effect amplified in the engineered variants. These properties enable the material integration into an efficient supercapacitor.
Juan David Cortés‐Ossa   +14 more
wiley   +1 more source

Muslim slaves and freedmen in medieval Portugal [PDF]

open access: yes, 2007
The study of slavery in medieval Portugal has focused almost exclusively on the status and fate of the sub-Saharan Africans who started to arrive in the kingdom from 1441onwards. The work of A. C. de C.
Soyer, Francois
core   +3 more sources

Resolving the Structural Duality of Graphene Grain Boundaries

open access: yesAdvanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo   +11 more
wiley   +1 more source

The Political History of Nineteenth-Century Portugal

open access: yes, 2003
The political history of nineteenth-century Portugal was, for a long time, a neglected subject. Under Salazar's New State it was passed over in favour of earlier periods from which that nationalist regime sought to draw inspiration; subsequent historians preferred to concentrate on social and economic developments to the detriment of the difficult ...
Fernandes, Paulo Jorge   +2 more
openaire   +4 more sources

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