Results 51 to 60 of about 1,716,583 (187)
The Anatomical Record, EarlyView.Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano +3 more
wiley +1 more source
Investigación Bibliotecológica: Archivonomía, Bibliotecología e Información, 2021 El objetivo de este estudio es analizar cómo las técnicas de minería de textos aplicadas a documentos textuales de la investigación policial brasileña pueden promover el descubrimiento de conocimiento.
Marcio Ponciano da Silva +1 more
doaj +1 more source
Layered double hydroxides-indomethacin nanohybrids: intercalation, pH influence, stability and release properties [PDF]
, 2016 In this work, three pH values (8, 9 and 10) were studied for the insertion of Indomethacin (Indo) molecules into Layered Double Hydroxides (LDHs). The obtained results showed that the LDH materials have been a good storage for the drug.
Crivello, Mónica Elsie +6 more
core +1 more source
The 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
Anales (Asociación Física Argentina), 2013 Un inductor saturable conformado con núcleos toroidales de ferrite fue estudiado experimentalmente para ser utilizado como llave de corte transitorio de pulsos de tensión, en un círculo avanzado de doble descarga para la excitación de láseres.
J Fochesatto +4 more
doaj
La investigación social en recursos humanos. La necesidad de seguir una metodología
Athenea Digital, 2008 El objetivo del presente artículo es destacar la necesidad actual de conocer la realidad que les rodea que tienen los profesionales que dirigen a personas en el seno de las organizaciones. Es mediante un proceso sistemático de investigación social lo que
Javier Gómez Ferri +1 more
doaj +1 more source
Nonlinear optimization for a tumor invasion PDE model [PDF]
, 2016 In this work, we introduce a methodology to approximate unknown parameters that appear on a non-linear reaction–diffusion model of tumor invasion. These equations consider that tumor-induced alteration of micro-environmental pH furnishes a mechanism for ...
Fernández Ferreyra, Damián Roberto +3 more
core +1 more source
Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)
The Anatomical Record, EarlyView.Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto +3 more
wiley +1 more source
Patristica et Mediaevalia, 2014 TOM MÜLLER / MATTHIAS VOLLET (eds), Die Modernitäten des Nikolaus von Kues. Debatten und Rezeptionen. NATALIA JAKUBECKI / MARCELA BORELLI. Cartas de Abelardo y Eloísa.
Francisco Bertelloni +6 more
doaj
Revista de Teledetección, 2017 The coastal spaces are fragile and complex areas that receive strong pressure because of the many uses and activities that are developed in them. The tourism of sun and beaches is one of the main economic practices present in these spaces that value the ...
E. Verón +5 more
doaj +1 more source