Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Kareem Elsayad"'
Autor:
Caterina Czibula, Manfred H Ulz, Alexander Wagner, Kareem Elsayad, Ulrich Hirn, Kristie J Koski
Publikováno v:
JPhys Photonics, Vol 6, Iss 3, p 035012 (2024)
Brillouin light scattering spectroscopy is applied to study the micromechanics of cellulosic viscose fibers, one of the commercially most important, man-made biobased fibers. Using an equal angle scattering geometry, we provide a thorough description
Externí odkaz:
https://doaj.org/article/98393d8744484e71b8310050ccdfe2f6
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-5 (2021)
Abstract This study details a theoretical analysis of leaky and waveguide modes in biperiodic all-dielectric holograms. By tuning diffraction orders and subsequently confining local density of optical states at two distinct resonance wavelengths, we
Externí odkaz:
https://doaj.org/article/2973de477baa4797866ec58b5d648306
Autor:
Kareem Elsayad
Publikováno v:
Frontiers in Physics, Vol 7 (2019)
Brillouin Light Scattering (BLS) spectroscopy allows for the all-optical measurement of the hypersonic velocities in a sample, from which one can extract high-frequency elastic moduli. Recent advances in high resolution optical imaging spectrometers
Externí odkaz:
https://doaj.org/article/91f52bb0c04f4ff19e434a6748ce8ab8
Publikováno v:
PLoS ONE, Vol 5, Iss 11, p e14050 (2010)
Recent studies have shown that fluorescently labeled antibodies can be dissociated from their antigen by illumination with laser light. The mechanism responsible for the photounbinding effect, however, remains elusive. Here, we give important insight
Externí odkaz:
https://doaj.org/article/0d2c5ecf2391404e95c047d905b0c054
Autor:
Kareem Elsayad, Katrin G Heinze
Publikováno v:
PLoS ONE, Vol 4, Iss 12, p e7963 (2009)
It has been shown that thin metal-based films can at certain frequencies act as planar near-field lenses for certain polarization components. A desirable property of such "lenses" is that they can also enhance and focus some large transverse spatial
Externí odkaz:
https://doaj.org/article/aadabb8b3ce94612a720c1460464fa17
Autor:
Domagoj Cikes, Kareem Elsayad, Erdinc Sezgin, Erika Koitai, Ferenc Torma, Michael Orthofer, Rebecca Yarwood, Leonhard X. Heinz, Vitaly Sedlyarov, Nasser Darwish Miranda, Adrian Taylor, Sophie Grapentine, Fathiya al-Murshedi, Anne Abot, Adelheid Weidinger, Candice Kutchukian, Colline Sanchez, Shane J. F. Cronin, Maria Novatchkova, Anoop Kavirayani, Thomas Schuetz, Bernhard Haubner, Lisa Haas, Astrid Hagelkruys, Suzanne Jackowski, Andrey V. Kozlov, Vincent Jacquemond, Claude Knauf, Giulio Superti-Furga, Eric Rullman, Thomas Gustafsson, John McDermot, Martin Lowe, Zsolt Radak, Jeffrey S. Chamberlain, Marica Bakovic, Siddharth Banka, Josef M. Penninger
Publikováno v:
Nature Metabolism. 5:495-515
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da34f24f3940a36e20050423638f3b07
https://doi.org/10.1038/s42255-023-00766-2
https://doi.org/10.1038/s42255-023-00766-2
Autor:
Marketa Samalova, Alesia Melnikava, Kareem Elsayad, Alexis Peaucelle, Evelina Gahurova, Jaromir Gumulec, Ioannis Spyroglou, Elena V Zemlyanskaya, Elena V Ubogoeva, Darina Balkova, Martin Demko, Nicolas Blavet, Panagiotis Alexiou, Vladimir Benes, Gregory Mouille, Jan Hejatko
Publikováno v:
Plant Physiology.
Expansins facilitate cell expansion by mediating pH-dependent cell wall (CW) loosening. However, the role of expansins in controlling CW biomechanical properties in specific tissues and organs remains elusive. We monitored hormonal responsiveness and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82a07ab15ce9a8993fa027711c1745bf
https://doi.org/10.1093/plphys/kiad228
https://doi.org/10.1093/plphys/kiad228
Autor:
Kareem Elsayad
Publikováno v:
Journal of the European Optical Society-Rapid Publications.
Brillouin Light Scattering (BLS) spectroscopy is a label-free method of measuring the GHz-frequency viscoelastic properties. The measured longitudinal modulus is acutely sensitive to the degree of hydration, crosslinking, and temperature, which can b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa244593f38474bf2e7011b33f26e0fb
https://doi.org/10.1051/jeos/2023028
https://doi.org/10.1051/jeos/2023028
Autor:
Domagoj Cikes, Kareem Elsayad, Erdinc Sezgin, Erika Koitai, Torma Ferenc, Michael Orthofer, Rebecca Yarwood, Leonhard X. Heinz, Vitaly Sedlyarov, Nasser Darwish Miranda, Adrian Taylor, Sophie Grapentine, Fathiya al-Murshedi, Anne Abott, Adelheid Weidinger, Candice Kutchukian, Colline Sanchez, Shane J.F. Cronin, Maria Novatchkova, Anoop Kavirayani, Thomas Schuetz, Bernhard Haubner, Lisa Haas, Astrid Hagelkruys, Suzanne Jackowski, Andrey Kozlov, Vincent Jacquemond, Claude Knauf, Giulio Superti-Furga, Eric Rullman, Thomas Gustafsson, John McDermot, Martin Lowe, Zsolt Radak, Jeffrey S. Chamberlain, Marica Bakovic, Siddharth Banka, Josef M. Penninger
Muscle degeneration is the most prevalent cause for frailty and dependency in inherited diseases and ageing, affecting hundreds of millions of people. Elucidation of pathophysiological mechanisms, as well as effective treatments for muscle diseases r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::778a9d9c18a1e11bbd340eb1830375d1
https://doi.org/10.1101/2022.03.02.482658
https://doi.org/10.1101/2022.03.02.482658
Autor:
Christian Teichert, Georg Johann Urstöger, Caterina Czibula, Ulrich Hirn, Jaromír Gumulec, Michael Pohlt, Jan Balvan, Kareem Elsayad
Publikováno v:
Cellulose. 27:4209-4220
We investigate the potential of Brillouin Light Scattering (BLS) Microspectroscopy for fast non-invasive all-optical assessment of the mechanical properties of viscose fibers and bleached softwood pulp. Using an optimized Brillouin spectrometer, we d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37e97c6333ce112ffafc45078a8f8b6c
https://doi.org/10.1007/s10570-020-03075-z
https://doi.org/10.1007/s10570-020-03075-z