Results 51 to 60 of about 189,821 (315)

Ombres et transparences, de Vinci aux calques numériques

open access: yesSillages Critiques, 2012
Shadows, which are a form of imitation, combine contiguity and similarity. Sfumato as recommended by Leonardo, shadows ‘explaining’ objects according to Hogarth, entail contextualisation; they imply partial transparency, still required in digital image ...
Marie-Madeleine Martinet
doaj   +1 more source

Statistical Modeling of Shadows in SAR Imagery

open access: yesMathematics, 2023
Shadows are a special distortion in synthetic aperture radar (SAR) imaging. They often hamper proper image understanding and target recognition but also offer useful information, and therefore, the statistical modeling of SAR image shadows is imperative.
Xiaojun Luo   +4 more
doaj   +1 more source

Shadowing in deuterium

open access: yesPhysical Review D, 1993
20 pages (figures available upon request), (to appear in Phys.Rev.D) ADP-92-192 ...
Melnitchouk, W., Thomas, A. W.
openaire   +3 more sources

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Las ladrilleras de Cholula: características demográficas y organización socioeconómica

open access: yesAlteridades, 2014
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Robert D. Shadow   +1 more
doaj  

From pantry to physiology: A narrative review linking food insecurity to biological dysfunction

open access: yesDialogues in Health
Background: Food insecurity is an escalating public health and social equity challenge with measurable biological consequences. Defined as limited or uncertain access to nutritionally adequate and safe foods, it affects millions of households in the ...
Liahm Blank   +5 more
doaj   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

open access: yesFEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara   +3 more
wiley   +1 more source

Modelling Shadow Using 3D Tree Models in High Spatial and Temporal Resolution

open access: yesRemote Sensing, 2017
Information about the availability of solar irradiance for crops is of high importance for improving management practices of agricultural ecosystems such as agroforestry systems (AFS). Hence, the development of a high-resolution model that allows for the
Elena Rosskopf   +2 more
doaj   +1 more source

Rhetorical shadows: The conceptual representation of incongruent shadows [PDF]

open access: yesSpatial Cognition & Computation, 2018
This article addresses the topic of conceptual representation of shadows. We analyze several examples of contemporary imagery, taken from advertising and cartooning, to shed light on the way shadow depictions are used as rhetorical devices. Instead of being inserted as a natural phenomenon, rhetorical shadows invite the construction of meaning, and ...
Schilperoord, J, van Weelden, L.
openaire   +3 more sources

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

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