Results 11 to 20 of about 397,932 (285)

A Geant4 based engineering tool for Fresnel lenses

, 2007
Geant4 is a Monte Carlo radiation transport toolkit that is becoming a tool of generalized application in areas such as high-energy physics, nuclear physics, astroparticle physics, or medical physics.
Costa, João, Pimenta, Mário, Tomé, Bernardo   +2 more
core   +1 more source

Astronomical photonics in the context of infrared interferometry and high-resolution spectroscopy

, 2016
We review the potential of Astrophotonics, a relatively young field at the interface between photonics and astronomical instrumentation, for spectro-interferometry.
Aggarwal, Berio, Coudé du Foresto, Diener, Eisenhauer, Errmann, Froehly, Guieu, Haynes, Jorden, Labadie, Labeye, Lhomé, Lindley, Martin, Martín, Norris, Russell, Tepper   +18 more
core   +3 more sources

Physical meaning of the radial index of Laguerre-Gauss beams [PDF]

, 2015
The Laguerre-Gauss modes are a class of fundamental and well-studied optical fields. These stable, shape-invariant photons - exhibiting circular-cylindrical symmetry - are familiar from laser optics, micro-mechanical manipulation, quantum optics ...
Krenn, Mario, Plick, William N.
core   +3 more sources

Many-body physics of a quantum fluid of exciton-polaritons in a semiconductor microcavity

, 2006
Some recent results concerning nonlinear optics in semiconductor microcavities are reviewed from the point of view of the many-body physics of an interacting photon gas.
A. Baas, A. Verger, B. Deveaud, C. Ciuti, Cristiano Ciuti, D. Porras, D. Rozas, D. Sarchi, F.M. Marchetti, F.P. Laussy, G. Dasbach, H. Deng, I. Carusotto, I. Carusotto, Iacopo Carusotto, J. Kasprzak, K. Huang, L.P. Pitaevskii, M. Richard, M. Wouters, M.C. Cross, M.H. Szymanska, Michiel Wouters, O. El Daïf, P.G. Savvidis, R. Houdré, R.M. Stevenson   +26 more
core   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

FEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

Colloquium: Graphene spectroscopy [PDF]

, 2014
Spectroscopic studies of electronic phenomena in graphene are reviewed. A variety of methods and techniques are surveyed, from quasiparticle spectroscopies (tunneling, photoemission) to methods probing density and current response (infrared optics, Raman)
A. Lanzara, B. Graphene Morphology, D. N. Basov, Feng Wang, M. M. Fogler, Yuanbo Zhang (张远波   +5 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Philosophy Enters the Optics Laboratory: Bell's Theorem and its First Experimental Tests (1965-1982)

, 2005
This paper deals with the ways that the issue of completing quantum mechanics was brought into laboratories and became a topic in mainstream quantum optics.
Aczel, Aspect, Aspect, Aspect, Aspect, Aspect, Aspect, Aspect, Ballentine, Belinfante, Bell, Bell, Bell, Bell, Bell, Bell, Bell, Bell, Bell, Bell, Bell, Bernstein, Blumenthal, Bohm, Bohm, Bohm, Bohm, Bohm, Bromberg, Brush, Clark, Clauser, Clauser, Clauser, Clauser, Clauser, Clauser, Clauser, Clauser, Clauser, Clauser, Clauser, Clauser, Cohen-Tannoudji, Eberhard, Einstein, Everett III, Faraci, Feynman, Freedman, Freedman, Freire, Freire, Freitas, Fry, Fry, Galison, Ghirardi, Gleason, Gottfried, Greenberger, Harvey, Harvey, Heisenberg, Holt, Holt, Holt, Horne, Horne, Horne, Horne, Jackiw, Jammer, Jauch, Kasday, Kasday, Kevles, Kocher, Lamehi-Rachti, Lochak, Lochak, Marshall, McGuire, Nussbaum, Olival Freire, Page, Pais, Papaliolios, Paty, Pauli, Pinch, Pipkin, Podlubny, Rosenfeld, Sachs, Schawlow, Shimony, Shimony, Shimony, Shimony, Shimony, Shimony, Stapp, Stone, Stöltzner, Whitaker, Wick, Wigner, Wigner, Wilson   +109 more
core   +1 more source