Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Hamed Bouzari"'
Publikováno v:
Physics Letters B, Vol 770, Iss C, Pp 43-49 (2017)
We have found some analytical cosmological solutions to MOdified Gravity (MOG). These solutions describe different evolutionary epochs of an isotropic and homogeneous universe. During each epoch, the evolution of cosmological perturbation is studied
Externí odkaz:
https://doaj.org/article/db5ccc8416dd42eb832739c32f898ae1
Autor:
Nezhad, Hamed Bouzari, Rasanen, Syksy
Publikováno v:
JCAP02(2024)009
We study models where a scalar field has derivative and non-derivative couplings to the Ricci tensor and the co-Ricci tensor with a view to inflation. We consider both the metric formulation and the Palatini formulation. In the Palatini case, the cou
Externí odkaz:
http://arxiv.org/abs/2307.04618
Publikováno v:
Phys. Let. B, 770, 43, 2017
We have found some analytical cosmological solutions to MOdified Gravity (MOG). These solutions describe different evolutionary epochs of an isotropic and homogeneous universe. During each epoch, the evolution of cosmological perturbation is studied
Externí odkaz:
http://arxiv.org/abs/1704.04161
Akademický článek
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Autor:
Christopher Beers, Mathias Engholm, Hamed Bouzari, Jørgen Arendt Jensen, Erik Vilain Thomsen, Matthias Bo Stuart, Jan Peter Bagge, Lars Nordahl Moesner, Soren Elmin Diederichsen, Thomas Christiansen
Publikováno v:
Engholm, M, Bouzari, H, Christiansen, T L, Beers, C, Bagge, J P, Moesner, L N, Diederichsen, S E, Stuart, M B, Jensen, J A & Thomsen, E V 2018, ' Probe development of CMUT and PZT row-column-addressed 2-D arrays ', Sensors and Actuators A: Physical, vol. 273, pp. 121-133 . https://doi.org/10.1016/j.sna.2018.02.031
This paper presents the characterization of two prototyped fully integrated 62 + 62 row-column-addressed (RCA) 2-D transducer array probes, which are based on capacitive micromachined ultrasonic transducer (CMUT) and on piezoelectric transducer (PZT)
Autor:
Caroline Ewertsen, Hamed Bouzari, Kristoffer Lindskov Hansen, Michael Bachmann Nielsen, Jørgen Arendt Jensen, Carsten Thomsen, Simon Holbek, Matthias Bo Stuart
Publikováno v:
Ultrasound in Medicine & Biology. 43:2213-2220
Ultrasound (US) examination of the common carotid artery was compared with a through-plane magnetic resonance imaging (MRI) sequence to validate a recently proposed technique for 3-D US vector flow imaging. Data from the first volunteer examined were
Publikováno v:
Physics Letters B
Physics Letters B, Vol 770, Iss C, Pp 43-49 (2017)
Physics Letters B, Vol 770, Iss C, Pp 43-49 (2017)
We have found some analytical cosmological solutions to MOdified Gravity (MOG). These solutions describe different evolutionary epochs of an isotropic and homogeneous universe. During each epoch, the evolution of cosmological perturbation is studied
Autor:
Mathias Engholm, Svetoslav Ivanov Nikolov, Erik Vilain Thomsen, Matthias Bo Stuart, Jørgen Arendt Jensen, Hamed Bouzari
Publikováno v:
Bouzari, H, Engholm, M, Nikolov, S I, Stuart, M B, Thomsen, E V & Jensen, J A 2019, ' Imaging Performance for Two Row–Column Arrays ', IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 66, no. 7, pp. 1209-1221 . https://doi.org/10.1109/TUFFC.2019.2914348
This study evaluates the volumetric imaging performance of two prototyped 62 + 62 row–column-addressed (RCA) 2-D array transducer probes using three synthetic aperture imaging (SAI) emission sequences and two different beamformers. The probes are f
Autor:
Svetoslav Ivanov Nikolov, Christopher Beers, Matthias Bo Stuart, Erik Vilain Thomsen, Mathias Engholm, Hamed Bouzari, Jørgen Arendt Jensen
Publikováno v:
Bouzari, H, Engholm, M, Beers, C, Stuart, M B, Nikolov, S I, Thomsen, E V & Jensen, J A 2018, ' Curvilinear 3-D Imaging Using Row–Column Addressed 2-D Arrays with a Diverging Lens: Phantom Study ', IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 65, no. 7, pp. 1182-1192 . https://doi.org/10.1109/TUFFC.2018.2836384
A double-curved diverging lens over the flat row–column-addressed (RCA) 2-D array can extend its inherent rectilinear 3-D imaging field of view (FOV) to a curvilinear volume region, which is necessary for applications such as abdominal and cardiac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3b37ba9cd41e8ee88784870201e6ca2
https://orbit.dtu.dk/en/publications/ead6b758-b1eb-4db1-aee5-3f5d39046bee
https://orbit.dtu.dk/en/publications/ead6b758-b1eb-4db1-aee5-3f5d39046bee
Publikováno v:
Engholm, M, Beers, C, Bouzari, H, Jensen, J A & Thomsen, E V 2018, ' Increasing the field-of-view of row–column-addressed ultrasound transducers: implementation of a diverging compound lens ', Ultrasonics, vol. 88, pp. 97–105 . https://doi.org/10.1016/j.ultras.2018.02.001
The purpose of this work is to investigate compound lenses for row-column-addressed (RCA) ultrasound transducers for increasing the field-of-view (FOV) to a curvilinear volume region, while retaining a flat sole to avoid trapping air between the tran