Results 61 to 70 of about 956,093 (298)

Femtometer displacement resolution with phase-insensitive Doppler sensing

Optics Letters, 2019
The measurement of extremely small displacements is of utmost importance, both for fundamental studies [1-4], and practical applications [5-7]. One way to estimate a small displacement is to measure the Doppler shift generated in light reflected off an object moving with a known periodic frequency.
Bethany J. Little, Julián Martínez-Rincón, Umberto Bortolozzo, Stefania Residori, John C. Howell   +4 more
openaire   +3 more sources

Radiative Phase Transitions and Casmir Effect Instabilities

, 2004
Molecular quantum electrodynamics leads to photon frequency shifts and thus to changes in condensed matter free energies often called the Casimir effect.
A. A. Abrikosov, A. Widom, E. Sassaroli, H. B. G. Casimir, I. E. Dzyaloshinski, K. A. Milton, M. Bordag, M. Pradeep Ganesh, P. C. Martin, S. Sivasubramanian, W. Magnus, Y. N. Srivastava   +11 more
core   +2 more sources

A degenerating PDE system for phase transitions and damage [PDF]

, 2013
In this paper, we analyze a PDE system arising in the modeling of phase transition and damage phenomena in thermoviscoelastic materials. The resulting evolution equations in the unknowns \theta (absolute temperature), u (displacement), and \chi (phase ...
Rocca, Elisabetta, Rossi, Riccarda
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Structural Properties of the Sliding Columnar Phase in Layered Liquid Crystalline Systems

, 2000
Under appropriate conditions, mixtures of cationic and neutral lipids and DNA in water condense into complexes in which DNA strands form local 2D smectic lattices intercalated between lipid bilayer membranes in a lamellar stack.
B.-Y. Ha, C. S. O’Hern, C. S. O’Hern, C. S. O’Hern, C. S. O’Hern, F. Artzner, G. Gompper, H. Brand, I. Koltover, J. O. Rädler, J. Toner, K.-V. Schubert, L. Golubović, L. Golubović, L. Golubović, L. Golubović, L. Golubović, M. J. Stevens, N. Gronbech-Jensen, N. Lei, P. L. Felgner, P. M. Chaikin, R. Zantl, Robert Holyst, Robert Holyst, S. A. Langer, S. Chandrasekhar, S. Chandrasekhar, T. C. Lubensky, T. Salditt, T. Salditt, V. A. Bloomfield   +31 more
core   +2 more sources

Generalized uncertainty relations: Theory, examples, and Lorentz invariance [PDF]

, 1995
The quantum-mechanical framework in which observables are associated with Hermitian operators is too narrow to discuss measurements of such important physical quantities as elapsed time or harmonic-oscillator phase.
Braunstein, Samuel L., Caves, Carlton M., Milburn, G. J.   +2 more
core   +2 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Effect of pressure on the Raman modes of antimony

, 2006
The effect of pressure on the zone-center optical phonon modes of antimony in the A7 structure has been investigated by Raman spectroscopy. The A_g and E_g frequencies exhibit a pronounced softening with increasing pressure, the effect being related to a
G. Kresse, I. Loa, J. Donohue, J. Wittig, K. Kunc, K. Syassen, L. F. Vereshchagin, M. Kasami, M. S. Dresselhaus, M. V. Klein, O. Degtyareva, T. N. Kolobyanina, T. N. Kolobyanina, U. Schwarz, W. Richter, X. Wang   +15 more
core   +3 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source