Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Pavel Ni"'
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract Multilayer thin film (MTF) filter arrays for computational spectroscopy are fabricated using stencil lithography. The MTF filter array is a 6 × 6 square grid, and 169 identical arrays are fabricated on a single wafer. A computational spectr
Externí odkaz:
https://doaj.org/article/78f99f1d4ec2428aa5c2db3aa8379585
Autor:
Jens Maus, Pavel Nikulin, Frank Hofheinz, Jan Petr, Anja Braune, Jörg Kotzerke, Jörg van den Hoff
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-16 (2024)
Abstract Background Residual image noise is substantial in positron emission tomography (PET) and one of the factors limiting lesion detection, quantification, and overall image quality. Thus, improving noise reduction remains of considerable interes
Externí odkaz:
https://doaj.org/article/1d7808d30aa142268cc672e0eca33315
Autor:
Heung-No Lee, Pavel Ni
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 67:1785-1799
Spatial resolution in conventional sonography is achieved through focusing and steering of an ultrasound beam. However, due to acoustic diffraction, the ability to focus an ultrasound beam is limited which leads to low spatial and contrast resolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::017285bb236e080a2cf2e3b3f5204665
https://doi.org/10.1109/tuffc.2020.2986588
https://doi.org/10.1109/tuffc.2020.2986588
Autor:
Heung-No Lee, Pavel Ni
Publikováno v:
Sensors (Basel, Switzerland)
Sensors
Volume 20
Issue 22
Sensors
Volume 20
Issue 22
In ultrasound, wave interference is an undesirable effect that degrades the resolution of the images. We have recently shown that a wavefront of random interference can be used to reconstruct high-resolution ultrasound images. In this study, we furth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f6736157c4cc8d0c70ab87932956c2a
http://europepmc.org/articles/PMC7698025
http://europepmc.org/articles/PMC7698025
Autor:
Niya Mileva, Dobrin Vassilev, Panayot Panayotov, Pavel Nikolov, Georgi Dimitrov, Kiril Karamfiloff, Gianluca Rigatelli, Robert J. Gil
Publikováno v:
Medicina, Vol 60, Iss 8, p 1294 (2024)
Background and Objectives: Patients with atrial fibrillation and coronary artery disease represent a group with a greater risk of mortality. To evaluate patients with atrial fibrillation (AF) and a significant coronary bifurcation lesion and compare
Externí odkaz:
https://doaj.org/article/19dc824c8e0a47408ab98f52fb04d2c2
Autor:
Daniel Inman, Veronika Kozlovskaya, Pavel Nikishau, Sarah Nealy, Maksim Dolmat, Jonghwa Oh, Claudiu T. Lungu, Lynzi Hunter, Eugenia Kharlampieva
Publikováno v:
Macromolecular Materials and Engineering, Vol 309, Iss 2, Pp n/a-n/a (2024)
Abstract Non‐spherical stimuli‐responsive polymeric particles have shown critical importance in therapeutic delivery. Herein, pH‐responsive poly(methacrylic acid) (PMAA) cubic hydrogel microparticles are synthesized by crosslinking PMAA layers
Externí odkaz:
https://doaj.org/article/0d562c1783174bf6b247dad87bf7cc6d
Autor:
Paulina Cegla, Frank Hofheinz, Ewa Burchardt, Rafał Czepczyński, Anna Kubiak, Jörg van den Hoff, Pavel Nikulin, Agnieszka Bos-Liedke, Andrzej Roszak, Witold Cholewinski
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-7 (2023)
Abstract The objective of this study was to assess the prognostic value of asphericity (ASP) and standardized uptake ratio (SUR) in cervical cancer patients. Retrospective analysis was performed on a group of 508 (aged 55 ± 12 years) previously untr
Externí odkaz:
https://doaj.org/article/7b477d97d6854085b2b3349af1a10370
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 733:12-17
We report on a multi-wavelength streak-optical-pyrometer (SOP) developed the for warm-dense-matter (WDM) experiments at the existing NDCX-I facility and the NDCX-II facility currently being commissioned at LBNL. The SOP served as the primary temperat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4812d3d7d2a59d0ca70368805b9e381c
https://doi.org/10.1016/j.nima.2013.05.102
https://doi.org/10.1016/j.nima.2013.05.102
Autor:
P. C. Efthimion, Steven Lidia, W.L. Waldron, Pavel Ni, Prabir K. Roy, Aharon Friedman, Peter A. Seidl, J.W. Kwan, Ronald C. Davidson, E.P. Gilson, Igor Kaganovich, J.J. Barnard
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 733:75-79
A barium titanate ferroelectric cylindrical plasma source has been developed, tested and delivered for the Neutralized Drift Compression Experiment NDCX-II at Lawrence Berkeley National Laboratory (LBNL). The plasma source design is based on the succ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a9f30cf31a1cc91b1f4dc099fcc4034
https://doi.org/10.1016/j.nima.2013.05.091
https://doi.org/10.1016/j.nima.2013.05.091
Autor:
Edward A. Startsev, B.G. Logan, R.M. More, J.W. Kwan, Albert Yuen, Pavel Ni, Wangyi Liu, Alice Koniges, Aharon Friedman, J.J. Barnard, A. Ng, Enrique Henestroza, M. Terry
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 733:45-50
The ion accelerator NDCX-II is undergoing commissioning at Lawrence Berkeley National Laboratory (LBNL). Its principal mission is to explore ion-driven High Energy Density Physics (HEDP) relevant to Inertial Fusion Energy (IFE) especially in the Warm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d137b8eee36580b237f09ac8c0200475
https://doi.org/10.1016/j.nima.2013.05.096
https://doi.org/10.1016/j.nima.2013.05.096