Results 91 to 100 of about 748,900 (322)

Aging Research: What Does Brazil Really Need? [PDF]

open access: yesGeriatrics, Gerontology and Aging
None.
Einstein Francisco Camargos
doaj   +1 more source

Five-dimensional vacuum Einstein spacetimes in C-metric like coordinates

open access: yes, 2010
A 5-dimensional Einstein spacetime with (non)vanishing cosmological constant is analyzed in detail. The metric is in close analogy with the 4-dimensional massless uncharged C-metric in many aspects.
BIN ZHU   +4 more
core   +1 more source

Transition From Lattice Oxygen to Radical‐Mediated Oxidation in Ammonium‐Intercalated Birnessite Catalysts for Selective Valorization of Biomass to Produce Formic Acid

open access: yesAdvanced Functional Materials, EarlyView.
The catalytic valorization of biomass represents an essential approach for achieving sustainable chemical production, with formic acid (FA) being recognized as a valuable platform chemical for hydrogen storage and environmentally friendly synthetic applications.
Yiqi Geng   +6 more
wiley   +1 more source

Laser‐Microscribed Glass Enables Surface‐Microfluidics‐Facilitated, Affordable, Rapid Cancer Diagnosis

open access: yesAdvanced Functional Materials, EarlyView.
A transparent, laser‐microscribed glass platform enables cancer diagnosis within 1 h—much faster than histology, which takes days, and free from the chemical or contrast risks of MRI or CT scans. The antibody‐functionalized rough glass surface captures viable cancer cells directly from suspension, allowing instant optical readout and offering a rapid ...
Anish Pal   +5 more
wiley   +1 more source

LO QUE EINSTEIN LE HUBIERA DICHO A ARISTÓTELES A PROPÓSITO DE LA DINÁMICA Y LA COSMOLOGÍA

open access: yesIdeas y Valores, 2010
A manera de estudio comparativo, en este artículo se propone un paralelo formal entre la física de Aristóteles y la física de Einstein. La finalidad no es la del rigor histórico. Se trata más bien de un ejercicio de análisis conceptual.
Favio Ernesto Cala Vitery
doaj  

The Disease is Indicated For the Icu, But the Patient is Not…, Dear Colleague [PDF]

open access: yesGeriatrics, Gerontology and Aging
None.
Einstein Francisco Camargos
doaj   +1 more source

Selfdual Einstein metrics and conformal submersions [PDF]

open access: yes, 2000
Weyl derivatives, Weyl-Lie derivatives and conformal submersions are defined, then used to generalize the Jones-Tod correspondence between selfdual 4-manifolds with symmetry and Einstein-Weyl 3-manifolds with an abelian monopole.
Calderbank, David M. J.
core  

Biomaterials‐Based Hydrogel with Superior Bio‐Mimetic Ionic Conductivity and Tissue‐Matching Softness for Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
By mimicking the ion‐accelerating effect of ion channel receptors in neuron membranes, a biomaterials‐based ionic hydrogel (BIH) is developed, which offers a high ionic conductivity of 7.04 S m−1, outperforming conventional chitosan, cellulose, agarose, starch, and gelatin based ionic hydrogels.
Baojin Chen   +7 more
wiley   +1 more source

GGA: achievements and challenges [PDF]

open access: yesGeriatrics, Gerontology and Aging
None.
Einstein F. Camargos
doaj   +1 more source

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