Zobrazeno 1 - 10
of 975
pro vyhledávání: '"A. R. Sheppard"'
Autor:
Gary Zhang, Michael J. Burla, Benjamin B. Caesar, Carolyne R. Falank, Peter Kyros, Victoria C. Zucco, Aneta Strumilowska, Daniel C. Cullinane, Forest R. Sheppard
Publikováno v:
Western Journal of Emergency Medicine, Vol 25, Iss 3, Pp 325-331 (2024)
Background: Patients with coronavirus 2019 (COVID-19) are at high risk for respiratory dysfunction. The pulse oximetry/fraction of inspired oxygen (SpO2/FiO2) ratio is a non-invasive assessment of respiratory dysfunction substituted for the PaO2:FiO2
Externí odkaz:
https://doaj.org/article/1194e34965284d44b967fac620893083
Autor:
Colin J. R. Sheppard
Publikováno v:
Photonics, Vol 11, Iss 10, p 913 (2024)
The effects of various properties on the tight focusing of light are considered. In particular, polarization of the incident field is an important consideration. Plots are presented for the variations in the focal intensity, and the area and volume o
Externí odkaz:
https://doaj.org/article/b7a1f4d817f74a83aebac8ce3b3e3a9f
Autor:
Colin J. R. Sheppard
Publikováno v:
Photonics, Vol 11, Iss 4, p 346 (2024)
In this paper, diffraction of scalar waves by a screen with a circular aperture is explored, considering the incidence of either a collimated beam or a focused wave, a historical review of the development of the theory is presented, and the introduct
Externí odkaz:
https://doaj.org/article/dc86b1e8dbf844e8b3a2f8da7d44e06b
Autor:
Giorgio Tortarolo, Alessandro Zunino, Francesco Fersini, Marco Castello, Simonluca Piazza, Colin J. R. Sheppard, Paolo Bianchini, Alberto Diaspro, Sami Koho, Giuseppe Vicidomini
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-14 (2022)
Super-resolution microscopy techniques can be challenging for live cells and thick samples. Here, the authors propose a method to reduce beam intensity and remove out-of-focus fluorescence background in image-scanning microscopy (ISM) and its combina
Externí odkaz:
https://doaj.org/article/b3f52a050bed4a879c1cfb1ec738f0b6
Autor:
Colin J. R. Sheppard, Miguel A. Porras
Publikováno v:
Photonics, Vol 10, Iss 9, p 1011 (2023)
The connections between Laguerre–Gauss and Bessel–Gauss beams, and between Hermite–Gauss and cosine-Gauss beams are investigated. We review different asymptotic expressions for generalized Laguerre and Hermite polynomials of large radial/transv
Externí odkaz:
https://doaj.org/article/3230355c7ca44c5ba38fc42edab5a8d9
Autor:
Colin J. R. Sheppard, Marco Castello, Giorgio Tortarolo, Alessandro Zunino, Eli Slenders, Paolo Bianchini, Giuseppe Vicidomini, Alberto Diaspro
Publikováno v:
Photonics, Vol 10, Iss 5, p 601 (2023)
We discuss the properties of signal strength and integrated intensity in two-photon excitation confocal microscopy and image scanning microscopy. The resolution, optical sectioning and background rejection are all improved over nonconfocal two-photon
Externí odkaz:
https://doaj.org/article/d3aa542242524380a08c903ddfd46db2
Autor:
Eugenia M. Gayo, Ariel A. Muñoz, Antonio Maldonado, Céline Lavergne, Jean Pierre Francois, Delia Rodríguez, Karin Klock‐Barría, Paul R. Sheppard, Isabella Aguilera‐Betti, Carlos Alonso‐Hernández, Marcelo Mena‐Carrasco, Anahí Urquiza, Laura Gallardo
Publikováno v:
Earth's Future, Vol 10, Iss 4, Pp n/a-n/a (2022)
Abstract The Anthropocene is an uneven phenomenon. Accelerated shifts in the functioning of the Earth System are mainly driven by the production and consumption of wealthy economies. Social, environmental and health costs of such industrialization, h
Externí odkaz:
https://doaj.org/article/1c6590332ff84cbfbc40117afbaf8b79
Publikováno v:
Viruses, Vol 15, Iss 3, p 722 (2023)
Red clover necrotic mosaic virus (RCNMV) is a segmented positive-strand RNA virus consisting of RNA1 and RNA2. Previous studies demonstrated that efficient translation of RCNMV RNA2 requires de novo synthesis of RNA2 during infections, suggesting tha
Externí odkaz:
https://doaj.org/article/8cf0ae6cdbbd4039ae10dba9bfbf5d73
Autor:
Anupamaa J Seshadri, Christopher P Michetti, Joseph F Rappold, Forest R Sheppard, Samuel P Carmichael II, Joseph Cuschieri, Eric Ley, Erika Rangel
Publikováno v:
Trauma Surgery & Acute Care Open, Vol 6, Iss 1 (2021)
Venous thromboembolism (VTE) is a potential sequela of injury, surgery, and critical illness. Patients in the Trauma Intensive Care Unit are at risk for this condition, prompting daily discussions during patient care rounds and routine use of mechani
Externí odkaz:
https://doaj.org/article/0c8f49edf426414d8db59e851056eefc
Publikováno v:
Photonics, Vol 9, Iss 6, p 394 (2022)
Many books on polarization give tables of Mueller matrices. The coherency matrix has been found useful for interpretetion of the Mueller matrix. Here we give a table of Mueller matrices M, coherency matrices C, and coherency matrix factors F for diff
Externí odkaz:
https://doaj.org/article/225c329b91794a8581785b5a65ee99ba