Results 41 to 50 of about 340,792 (285)

The Chandra COSMOS Survey: III. Optical and Infrared Identification of X-ray Point Sources [PDF]

open access: yes, 2012
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra program that has imaged the central 0.9 deg^2 of the COSMOS field down to limiting depths of 1.9 10^-16 erg cm^-2 s-1 in the 0.5-2 keV band, 7.3 10^-16 erg cm^-2 s^-1 in the 2-10 keV band ...
A. Bongiorno   +129 more
core   +3 more sources

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

open access: yesAdvanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden   +11 more
wiley   +1 more source

Un geranium humboldtii al jardí geogràfic. Opinió pública, burgesia i paisatge als inicis de la geografia moderna

open access: yesDocuments d'Anàlisi Geogràfica, 2013
Alexander von Humboldt (1769-1859) fou un personatge central de la vida europea entre els segles xviii i xix. La seva obra escrita, que va des de la botànica fins a l’economia política, passant per la geografia i la geologia, permet seguir l’evolució del
Bernat Lladó Mas
doaj   +1 more source

Mathématiques de la musique idéale : Harmonie cosmique et proportions architecturales en Europe et aux États-Unis dans les années 1950-1960

open access: yesEtudes Epistémè, 2023
The idea that the proportions of a building are to be set on mathematical ratios that arise from musical harmony – itself being the image of a cosmic harmony inaudible to our mortal ears – was brought back to the forefront of the architectural scene in ...
Jules-Valentin Boucher
doaj   +1 more source

Black hole and cosmos with multiple horizons and multiple singularities in vector-tensor theories

open access: yes, 2018
A stationary and spherically symmetric black hole (For example, Reissner-Nordstrom black hole or Kerr-Newman black hole) has at most one singularity and two horizons. One horizon is the outer event horizon and the other is the inner Cauchy horizon.
Gao, Changjun   +3 more
core   +1 more source

Intertangled stochastic motifs in networks of excitatory-inhibitory units [PDF]

open access: yes, 2017
We have benefited from discussions with A. Politi.
Fanelli, Duccio   +3 more
core   +2 more sources

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel   +4 more
wiley   +1 more source

Frammenti di un’estetica cinese del vuoto

open access: yesRivista di Estetica, 2019
Esistono un vuoto negativo e un vuoto positivo. Il primo origina oppressione, il secondo si pone come spazio aperto al possibile, ed è questo il vuoto che l’arte cinese esprime: la possibilità del diverso, l’incompletezza dell’esistente, la parzialità ...
Wolfgang Kubin
doaj   +1 more source

Understanding tissue morphology: model repurposing using the CoSMoS process [PDF]

open access: yes, 2014
We present CoSMoS as a way of structuring thinking on how to reuse parts of an existing model and simulation in a new model and its implementation. CoSMoS provides a lens through which to consider, post-implementation, the assumptions made during the ...
Bown, James L.   +4 more
core   +3 more sources

Structural Porosity and Low Mineral Density in Enamel Rods Drive Molar Incisor Hypomineralisation

open access: yesAdvanced Functional Materials, EarlyView.
This study uses advanced imaging modalities on multiple length scales to show that molar‐incisor hypomineralization does not present as a locally homogeneous pathology. Instead, microstructural defects, characterized through non‐mineralized, protein‐rich sheaths and an altered mineral structure in between prism rods, resulting in local differences in ...
Katharina Jähn‐Rickert   +14 more
wiley   +1 more source

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