Results 41 to 50 of about 2,076,692 (292)

A candidate material EuSn2As2-based terahertz direct detection and imaging

open access: yesnpj 2D Materials and Applications, 2022
Exploring the photoelectric performance of emerging materials represented by graphene, black phosphorus and transition metal dichalcogenides is attracting enormous research interest for a wide range of electronic and photonic applications.
Changlong Liu   +12 more
doaj   +1 more source

Confirmation of the planet around HD 95086 by direct imaging [PDF]

open access: yes, 2013
VLT/NaCo angular differential imaging at L' (3.8 microns) revealed a probable giant planet comoving with the young and early-type HD 95086 also known to harbor an extended debris disk. The discovery was based on the proper motion analysis of two datasets
Boccaletti, A.   +10 more
core   +4 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Direct sampling method for anomaly imaging from S-parameter

open access: yes, 2018
In this paper, we develop a fast imaging technique for small anomalies located in homogeneous media from S-parameter data measured at dipole antennas. Based on the representation of S-parameters when an anomaly exists, we design a direct sampling method (
Park, Won-Kwang
core   +1 more source

High performance coronagraphy for direct imaging of exoplanets

open access: yesEPJ Web of Conferences, 2011
Coronagraphy has recently been an extremely active field of research, with several high performance concepts proposed, and several new coronagraphs tested in laboratories and telescopes. Coronagraph concepts can be grouped in a few broad categories: Lyot-
Guyon O.
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Correlated imaging through atmospheric turbulence

open access: yes, 2010
Correlated imaging through atmospheric turbulence is studied, and the analytical expressions describing turbulence effects on image resolution are derived.
Gong, Wenlin   +3 more
core   +1 more source

Optically gated beating-heart imaging [PDF]

open access: yes, 2014
The constant motion of the beating heart presents an obstacle to clear optical imaging, especially 3D imaging, in small animals where direct optical imaging would otherwise be possible.
Taylor, Jonathan M.
core   +2 more sources

Negative result of multi-frequency direct sampling method in microwave imaging

open access: yesResults in Physics, 2019
A negative result of multi-frequency direct sampling method (DSM) for imaging small anomaly from scattering parameters in microwave imaging was exhibited.
Won-Kwang Park
doaj   +1 more source

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