Results 41 to 50 of about 4,072 (171)

Stratigraphic Relations of the Ipubi Formation: Siliciclastic-Evaporitic Succession of the Araripe Basin

open access: yesAnais da Academia Brasileira de Ciências, 2018
The Ipubi Formation represents the Aptian-Albian siliciclastic-evaporitic succession of Araripe Basin, NE Brazil. This succession comprises siliciclastic rocks (bituminous shales and claystones) and evaporites (gypsum and secondary anhydrite) and ...
CARLOS E. FABIN   +7 more
doaj   +1 more source

The coelurosaur theropods of the Romualdo formation, early Cretaceous (Aptian) of Brazil: Santanaraptor placidus meets Mirischia asymmetrica

open access: yesThe Anatomical Record, EarlyView.
Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt   +4 more
wiley   +1 more source

Preparation of fossil shrimps from the Romualdo Formation

open access: yesTerrae Didatica
Fossil preparation is essential for exhibition, preservation, and paleontological analysis, ensuring structural integrity and revealing morphoanatomical and taphonomic data. This study details the preparation of a fossilized shrimp from the Romualdo Formation (MPSC CR3907p and MPSC CR3907cp), housed at the Plácido Cidade Nuvens Museum of Paleontology ...
Olga Alcântara Barros   +1 more
openaire   +1 more source

Model reproduces individual, group and collective dynamics of human contact networks [PDF]

open access: yes, 2016
Empirical data on the dynamics of human face-to-face interactions across a variety of social venues have recently revealed a number of context-independent structural and temporal properties of human contact networks.
Baronchelli, Andrea   +2 more
core   +3 more sources

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

open access: yesThe Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison   +9 more
wiley   +1 more source

Synthesis, characterization, and performance of x_MoO3/Z‐22 and x_MoO3/MMP catalysts for biodiesel production

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Methyl transesterification of soybean oil using heterogeneous catalysts for biodiesel production. Abstract The growing global demand for renewable fuels has driven the search for efficient catalysts in biodiesel production. This study presents the synthesis and characterization of x_MoO3/Z‐22 and x_MoO3/MMP heterogeneous catalysts, and evaluates the ...
André Miranda da Silva   +4 more
wiley   +1 more source

On the occurrence of pterosauria in Exu, Pernambuco (lower cretaceous Romualdo Formation, Araripe Basin), Northeastern Brazil

open access: yesEstudos Geológicos, 2014
Este trabalho descreve um osso isolado de pterossauro da Formação Romualdo (Aptiano / Albiano) coletado em um novo sitío fossilífero na porção sudeste da Bacia do Araripe. O espécime (DGEO-CTG-UFPE 7516) consiste em uma ulna preservada em três dimensões que apresenta semelhanças morfológicas com os Pteranodontoidea e é tentativamente referido a ...
Tito Aureliano   +3 more
openaire   +1 more source

More Science Than Art: The First Botanical Garden in Portugal (c. 1650)

open access: yesRenaissance Studies, EarlyView.
ABSTRACT Gabriel Grisley, a German physician, came to Portugal and founded a garden near the Xabregas River in Lisbon, during the 1610s under the Spanish kings' rule. In view of the utility a botanic garden represented for the kingdom, he was able to obtain a royal privilege from King João IV during the Restauration War against the Spanish (1640–1668).
Ana Duarte Rodrigues
wiley   +1 more source

Real‐world prevalence of PD‐L1 positivity in early‐stage/metastatic triple‐negative breast cancer: primary results and pathology insights from the global retrospective observational VANESSA study

open access: yesHistopathology, Volume 88, Issue 7, Page 1373-1384, June 2026.
In the real‐world VANESSA study in triple‐negative breast cancer, PD‐L1‐positive prevalence was 38% in early‐stage and 20% in metastatic tumours, lower than in prospective trials. The lower prevalence in smaller versus larger tissue samples and by local versus central assessment underlines the importance of robust PD‐L1 testing to determine eligibility
Corrado D'Arrigo   +16 more
wiley   +1 more source

Landscape features predict broad‐scale seed rain patterns across fragments of the Brazilian Atlantic Forest

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
Along with precipitation, forest cover emerges as a fundamental driver of alpha and beta diversity in the seed rain. This highlights the role of habitat amount at the landscape level over patch‐level features, like patch size, for seed dispersal. However, increased seed density can be related to higher dispersal rates in forest borders.
Luís Felipe Daibes   +63 more
wiley   +1 more source

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