Results 81 to 90 of about 6,489 (209)

Development of hydrogel‐based composite scaffolds containing eggshell particles for bone regeneration applications

open access: yesJournal of Biomedical Materials Research Part B: Applied Biomaterials, Volume 112, Issue 1, January 2024.
Abstract This study describes the development and characterization of novel composite scaffolds, made of an alginate‐chitosan hydrogel matrix containing eggshell (ES) particles, for bone tissue engineering applications. Scaffolds with ES particles, either untreated or treated with phosphoric acid to create a nanotextured particle surface, were compared
Nicholas D. Calvert   +6 more
wiley   +1 more source

Organic-rich shales from internal Betic basins (SE Spain): potential source rocks analogs for the pre-Messinian Salt play in the Western Mediterranean

open access: yesGeologica Acta, 2016
Southeastern Spain has a large number of Late Neogene basins with substantial evaporitic deposits that developed under an overall NNW-SSE compressional regime related to the African-European tectonic plates collision.
A. PERMANYER   +3 more
doaj  

Impact vesiculation – a new trigger for volcanic bubble growth and degassing [PDF]

open access: yes, 2007
We highlight a potentially important trigger for bubble growth and degassing in volcanic bombs. We have successfully triggered bubble growth in previously unvesiculated samples of silicate melt during experiments to simulate volcanic bomb impact, by ...
Dingwell, D. B.   +3 more
core   +1 more source

Ordovician and Silurian igneous rocks and orthogeneisses in the Catalonian Coastel Ranges [PDF]

open access: yes, 1990
These rocks exhibit calc-alkaline affinities and may have originated by partial melting of the crust in a post-collision, anorogenic setting. Orthogneisses derived from biotite-bearing leucogranites occur within aprobably cambrian heterogeneous series ...
Gil Ibarguchi, José Ignacio   +2 more
core   +1 more source

Genetic variation in eggshell crystal size and orientation is large and these traits are correlated with shell thickness and are associated with eggshell matrix protein markers [PDF]

open access: yes, 2012
The size and orientation of calcium carbonate crystals influence the structure and strength of the eggshells of chickens. In this study, estimates of heritability were found to be high (0.6) for crystal size and moderate (0.3) for crystal orientation ...
Ahmed   +28 more
core   +1 more source

Experimental petrology and the upper mantle: simulating peridotitic sources and mantle heterogeneities

open access: yesAll Earth
Experimental petrology provides a direct means of constraining mineral phase stability and primary magma compositions across a wide range of pressure – temperature (P-T) conditions.
Caroline D. K. Tolotti   +1 more
doaj   +1 more source

Petrologia da Região de São Roque, São Paulo

open access: yesBoletim da Faculdade de Filosofia, Ciências e Letras da Universidade de São Paulo. Mineralogia, 1953
This paper is concerned with Sao Roque series in the vicinity of the city of Sao Roque in the State of Sao Paulo. Pre-Cambrian para-metamorphic rocks form this series. However, many of the more prominent outcrops consist of "Pirituba" granite types formed by large phenocrysts of microcline in a coarse ground mass which are intrusive in the country ...
openaire   +2 more sources

Colocação, metamorfismo e natureza dos anfibolitos de Água Azul do Norte, Província Carajás

open access: yesGeologia USP. Série Científica, 2018
Os corpos metamáficos de Água Azul do Norte, porção centro-sul do Domínio Carajás, são intrusivos em uma crosta TTG e correspondem a duas variedades: (i) actinolita anfibolito, que ocorre como um corpo alongado de orientação geral N-S e inflexão para NE,
Diwhemerson Barbosa de Souza   +4 more
doaj   +1 more source

Elementi di petrologia sperimentale

open access: yes
This volume is focused on the fundamentals of experimental petrology, aiming to facilitate the understanding of the dynamics, formation, and evolution of planet Earth and rocky planets. The study is primarily based on the author’s experience in the fields of petrology and volcanology, with the purpose of introducing university and PhD students in Earth
openaire   +5 more sources

Creació d'una Eina de suport per a la docència en Geoquímica. Una eina d'aprenentatge autònom i d'avaluació [PDF]

open access: yes, 2017
La proposta presentada s'emmarca en un projecte d'innovació docent de la Universitat de Barcelona. L'objectiu és desenvolupar una nova eina interactiva que d'una banda ajudi els alumnes a reforçar i/o ampliar els coneixements de geoquímica de manera ...
Aulinas Juncà, Meritxell   +3 more
core  

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