Results 51 to 60 of about 1,013,031 (328)

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

Extending Imaging Volume in Soft X‐Ray Tomography

Advanced Photonics Research, 2023
Soft X‐ray tomography offers rapid imaging of whole, single cells with a few tens of nanometers spatial resolution without fixation or labeling. Herein, this technique is limited to specimens about 10 μm thick, such that applications of soft X‐ray ...
Axel Ekman, Jian-Hua Chen, Bieke Vanslembrouck, Valentina Loconte, Carolyn A. Larabell, Mark A. Le Gros, Venera Weinhardt   +6 more
doaj   +1 more source

Monocular Real Time Full Resolution Depth Estimation Arrangement with a Tunable Lens

Applied Sciences, 2022
This work introduces a real-time full-resolution depth estimation device, which allows integral displays to be fed with a real-time light-field. The core principle of the technique is a high-speed focal stack acquisition method combined with an efficient
Ricardo Oliva-García, Sabato Ceruso, José G. Marichal-Hernández, José M. Rodriguez-Ramos   +3 more
doaj   +1 more source

Adaptive Optics for Astronomy

, 2012
Adaptive Optics is a prime example of how progress in observational astronomy can be driven by technological developments. At many observatories it is now considered to be part of a standard instrumentation suite, enabling ground-based telescopes to ...
Arsenault R, Beuzit J-L, Bonaccini Calia D, Davies R, Ellerbroek BL, Ellerbroek BL, Foy R, Frogel J, Gendron E, Hubin N, Jones T, Labeyrie A, Markus Kasper, Merkle F, Merline WJ, Neichel B, Richard Davies, Riffel R, Rigaut F, Rousset G, Tyson RK, Wild V, Wizinowich P   +22 more
core   +1 more source

Sky coverage modeling for the whole sky for laser guide star multiconjugate adaptive optics [PDF]

, 2012
The scientific productivity of laser guide star adaptive optics systems strongly depends on the sky coverage, which describes the probability of finding natural guide stars for the tip/tilt wavefront sensor(s) to achieve a certain performance.
Andersen, David, Ellerbroek, Brent, Wang, Lianqi   +2 more
core   +1 more source

Predicting the Future Burden of Renal Replacement Therapy in Türkiye Using National Registry Data and Comparative Modeling Approaches

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül, Neriman Sıla Koç, Berrak Itır Aylı   +2 more
wiley   +1 more source

A evolução da teoria ondulatória da luz e os livros didáticos

Revista Brasileira de Ensino de Física
O tratamento habitualmente dado em livros-texto de física à evolução da teoria ondulatória da luz, a partir do modelo de Christiaan Huygens, pode ser considerado uma reconstrução a posteriori (whiggismo), que impõe uma interpretação atual a conceitos ...
Fabio W.O. da Silva
doaj   +1 more source

Linearizing nonlinear optics

, 2016
In the framework of linear optics, light fields do not interact with each other in a medium. Yet, when their field amplitude becomes comparable to the electron binding energies of matter, the nonlinear motion of these electrons emits new dipole radiation
Clerici, Matteo, Ernotte, Guilmot, Ibrahim, Heide, Lassonde, Philippe, Legare, Francois, Morandotti, Roberto, Schmidt, Bruno E.   +6 more
core   +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

Adaptive Optics for Extremely Large Telescopes

, 2019
Adaptive Optics has become a key technology for the largest ground-based telescopes currently under or close to begin of construction. Adaptive optics is an indispensable component and has basically only one task, that is to operate the telescope at its ...
Hippler, Stefan
core   +1 more source