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pro vyhledávání: '"Jennifer E. Blackwood"'
Autor:
Betty Y. Yang, Jennifer E. Blackwood, Jenny Shin, Sally Guan, Mengqi Gao, Dawn B. Jorgenson, James E. Boehl, Michael R. Sayre, Peter J. Kudenchuk, Thomas D. Rea, Heemun Kwok, Nicholas J. Johnson
Publikováno v:
Resuscitation. 177
Respiratory mechanics, such as tidal volume (VIn this prospective, pilot investigation of patients receiving prehospital advanced airway placement, paramedics applied a device to measure respiratory mechanics. We evaluated tidal volume (VOver 16-mont
Autor:
Jason Coult, Shiv Bhandari, Diya Sashidhar, Jennifer E Blackwood, J. Nathan Kutz, Peter Kudenchuk, Thomas Rea, Heemun Kwok
Publikováno v:
Circulation. 144
Introduction: Chest compressions (CCs) during CPR cause electrical artifacts in the ECG. Prior work has found that the severity of CC artifact, quantified by the signal-to-noise ratio (SNR), affects the diagnostic sensitivity of defibrillator algorit
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 221:124-128
We report results for e±–Ps(1s) scattering in the energy range up to 80 eV calculated in 9-state and 30-state coupled pseudostate approximations. Cross-sections are presented for elastic scattering, ortho–para conversion, discrete excitation, io
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 221:129-133
Distorted-wave Born approximation calculations for Ps formation in positron impact on He, Ne, Ar, Kr and Xe are reported for the energy range up to 200 eV. Capture into the n=1, 2 and 3 states of Ps is calculated explicitly and 1/n3 scaling is used t
Publikováno v:
Physical Review A. 60:4454-4460
Coupled-state calculations are presented for $\mathrm{Ps}(1s)+\mathrm{He}{(1}^{1}S)$ scattering in the energy range 0--40 eV. Up to 22 Ps states are employed but only one He state is retained. Pseudostates are used to represent the Ps continuum. Firs
Publikováno v:
New Directions in Antimatter Chemistry and Physics ISBN: 0792371526
We focus upon the coupled - state approach to positron - and positronium (Ps) - atom collisions. The concept of pseudostates as a way of including ionization channels is discussed. Examples are given from positron scattering by atomic hydrogen and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35232d321b3839af913a48a264e075f3
https://doi.org/10.1007/0-306-47613-4_11
https://doi.org/10.1007/0-306-47613-4_11
Publikováno v:
Physical Review A. 65
It is shown that virtual H - formation has a profound effect upon low-energy Ps( 1s)-H( ( 1s) scattering, yet H formation only accounts for about 10% of the total cross section just above threshold. Infinite series of Rydberg resonances converging on
Publikováno v:
Physical Review A. 65
Results are presented for e + scattering by H - in the impact energy range 0≤E 0 ≤10 eV. These include integrated cross sections for Ps formation in the 1s, 2s, and 2p states, as well as in an aggregate of states with n≥3,and for direct ionizat
Publikováno v:
AIP Conference Proceedings.
Results of recent large coupled-pseudostate calculations of Ps scattering by H and He are presented. The parlous state of both theory and experiment for He is highlighted.
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 36:797-798
A numerical inaccuracy in the static-exchange calculation of Blackwood et al (2002 J. Phys. B: At. Mol. Opt. Phys. 35 2661) for Ps(1s)–Xe scattering is corrected. The corrected result now conforms to the same pattern as He, Ne, Ar and Kr.