Accès ouvert
2024
conference-abstract
OpenAlex
J. Stirnemann, Vianney Debavelaere, Guillaume Corda-D’Incan, N. Matevski et autres
Objectives: This study aimed to evaluate interoperator reproducibility for contrast-to-noise ratio (CNR) assessment at the 18-week scan.Methods: This retrospective cross-sectional study was conducted at a single-centre.The study sample comprised 187 consecutive 18-week scans, including 205 fetuses and 565 ultrasound images.Ultrasound examinations were …
fr, us
(code pays fourni par la source)
Accès ouvert
2024
article
OpenAlex
C.M. Snell, D. Banfield
Abstract Using images from Cassini, we analyzed the north–south albedo asymmetry that has been observed in the atmosphere of Saturn’s moon, Titan. Suitable images from the Cassini Imaging Science Subsystem taken at 889 nm spanned from 2004 to 2017—around half of a …
us, fr
(code pays fourni par la source)
2021
book-chapter
OpenAlex
B. P. Shafer, María Dolores Durán-García, Richard J. Scammon, C.M. Snell et autres
2018
article
OpenAlex
C.M. Snell, Alan R. Denton
2017
article
OpenAlex
Michelle W. Lee, Ming Han, Guilherme Volpe Bossa, C.M. Snell et autres
At physiological conditions, most proteins or peptides can fold into relatively stable structures that present on their molecular surfaces specific chemical patterns partially smeared out by thermal fluctuations. These nanoscopically defined patterns of charge, hydrogen bonding, and/or hydrophobicity, along with their elasticity …
us
(code pays fourni par la source)
2017
conference-abstract
OpenAlex
C.M. Snell, Illeana Gomez Leal, Lisa Kaltenegger, Ross J. Jennings
2009
article
OpenAlex
Thomas J. T. Kwan, Michael Berninger, C.M. Snell, T.-S.F. Wang et autres
The Cygnus radiographic machine is a relatively compact low-energy (<3 MV) X-ray source with some extremely desirable features for radiographic applications. These features include small spot size, which is critical for high-spatial resolution, and high dose in a low-energy range. The X-ray …
us
(code pays fourni par la source)
2007
conference-paper
OpenAlex
R. J. Mason, M. S. Wei, F. N. Beg, R. B. Stephens et autres
Summary form only given. The transport of relativistic electrons generated in wire and foil targets by short-pulse lasers is examined with the new e-PLAS simulation code base on implicit-moment/hybrid techniques. In a 40 mum diameter Cu wire (Zeff= 15) as recently illuminated …
us
(code pays fourni par la source)
2006
conference-paper
OpenAlex
L. Yin, Thomas J. T. Kwan, B. G. DeVolder, C.M. Snell et autres
In this work, two-dimensional particle-in-cell simulations are used to examine the electron physics in the rod-pinch diode, a device that can be used to produce a relatively low-energy (a few MeV) radiographic electron source. It is found that with diode parameters for …
us
(code pays fourni par la source)
2003
conference-abstract
OpenAlex
Thomas J. T. Kwan, C.M. Snell
Summary form only given. Next generation X-ray radiography machines must use high electron beam current to provide the necessary dose and very small spot size to achieve the desired optical resolution. However, this combination of high current in a small area leads …
us
(code pays fourni par la source)
Accès ouvert
2003
conference-paper
OpenAlex
Thomas J. T. Kwan, M.C. Moir, C.M. Snell
The onset of the growth of the electron beam spot due to partial charge neutralization by ions extracted from the target plasma has been predicted by theory and simulation. The concept of an electrically self-biased target was developed to control the length …
us
(code pays fourni par la source)
2002
conference-paper
OpenAlex
S.‐H. Yang, Steven J. Morris, Shijie Tian, K. Parab et autres
In this paper is reported a physically based Monte Carlo model and simulator for accurate simulation of BF/sub 2/ ion implantation in (100) single-crystal silicon. An improved electronic stopping model and a cumulative damage generation model have been developed and implemented in …
us
(code pays fourni par la source)