Results 81 to 90 of about 5,706,267 (307)

PT -symmetric waveguide system with evidence of a third-order exceptional point [PDF]

, 2017
CITATION: Schnabel, J., et al. 2017. PT-symmetric waveguide system with evidence of a third-order exceptional point. Physical Review A, 95(5):053868, doi:10.1103/PhysRevA.95.053868.
J. Schnabel, H. Cartarius, J. Main, G. Wunner, W. D. Heiss   +4 more
semanticscholar   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Common Fixed Point Theorems in Intuitionistic Generalized Fuzzy Cone Metric Spaces

Mathematics, 2020
In the present work, we study many fixed point results in intuitionistic generalized fuzzy cone metric space. Precisely, we prove new common fixed point theorems for three self mappings that do not require any commutativity or continuity but a ...
Mathuraiveeran Jeyaraman, Mookiah Suganthi, Wasfi Shatanawi   +2 more
doaj   +1 more source

Smooth symmetric bilinear forms on ${\mathcal L}_s(^2l_{\infty}^2)$

Karpatsʹkì Matematičnì Publìkacìï, 2022
In [Carpathian Math. Publ. 2020, 12 (2), 340-352], the author classified the extreme points and exposed points of the unit ball of the space of symmetric bilinear forms on the space ${\mathcal L}_s(^2l_{\infty}^2)$, where ${\mathcal L}_s(^2l_{\infty}^2)$
Sung Guen Kim
doaj   +1 more source

Multiple Point-Symmetric Ejections in IC 4634

, 2003
We present a spatio-kinematical study of the planetary nebula (PN) IC 4634 which has experienced several episodes of point-symmetric ejections oriented at different directions. The nebula displays two S-shaped low-ionization arcs that are probably related to two relatively recent point-symmetric ejections, the outer S-shaped arc representing a ...
Guerrero, Martin A., Miranda, Luis F., Chu, You-Hua   +2 more
openaire   +2 more sources

Sheet-like assemblies of spherical particles with point-symmetrical patches

The Journal of Chemical Physics, 2012
We report a computational study on the spontaneous self-assembly of spherical particles into two-dimensional crystals. The experimental observation of such structures stabilized by spherical objects appeared paradoxical so far. We implement patchy interactions with the patches point-symmetrically (icosahedral and cubic) arranged on the surface of the ...
Mani, E., Sanz, E., Roy, S., Dijkstra, M., Groenewold, J., Kegel, W.K.   +5 more
openaire   +4 more sources

Enhanced Sensing and Nondegraded Thermal Noise Performance Based on PT-Symmetric Electronic Circuits with a Sixth-Order Exceptional Point.

Physical Review Letters, 2019
An exceptional point (EP) is a non-Hermitian degeneracy where both eigenvalues and their corresponding eigenvectors coalesce. It was recently proposed and demonstrated that such spectral singularity can be utilized for enhanced sensing.
Zhicheng Xiao, Huanan Li, T. Kottos, A. Alú   +3 more
semanticscholar   +1 more source

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

Molecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed, Kerstin Huebner, Katharina Erlenbach‐Wuensch, Chuanpit Hampel, Daniela Thalheim, Adriana Vial‐Roehe, Bodee Nutho, Susanne Merkel, Arndt Hartmann, Pithi Chanvorachote, Regine Schneider‐Stock   +10 more
wiley   +1 more source

Precessing Jet and Large Dust Grains in the V380 Ori NE Star-forming Region [PDF]

, 2017
The V380 Ori NE bipolar outflow was imaged in the SiO and CO J = 1 - 0 lines, and dense cores in L1641 were observed in the 2.0-0.89 mm continuum. The highly collimated SiO jet shows point-symmetric oscillation patterns in both position and velocity ...
Cho, Jungyeon, Choi, Minho, Evans, Neal J., Kang, Miju, Kang, Sung-Ju, Kwon, Jungmi, Lee, Jeong-Eun, Lee, Youngung, Ohashi, Satoshi, Park, Geumsook, Sayers, Jack, Tatematsu, Ken'ichi, Yoo, Hyunju   +12 more
core   +2 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source