Results 71 to 80 of about 357,530 (342)

False head complexity and evidence of predator attacks in male and female hairstreak butterflies (Lepidoptera: Theclinae: Eumaeini) from Mexico [PDF]

PeerJ, 2019
In many butterfly species, the posterior end of the hindwings of individuals perching with their wings closed resembles a butterfly head. This “false head” pattern is considered an adaptation to deflect predator attacks to less vulnerable parts of the ...
Eric Novelo Galicia, Moisés Armando Luis Martínez, Carlos Cordero   +2 more
doaj   +2 more sources

Small Corrections to the Tunneling Phase Time Formulation

, 2007
After reexamining the above barrier diffusion problem where we notice that the wave packet collision implies the existence of {\em multiple} reflected and transmitted wave packets, we analyze the way of obtaining phase times for tunneling/reflecting ...
A. Enders, A. Enders, A. Enders, A. Enders, A. Haybel, A. Péres, A. Ranfagni, A.D. Baute, A.E. Bernardini, A.E. Bernardini, A.L. Baz, A.L. Xavier, A.M. Steinberg, B. Gaveau, B. Segard, C. Cohen-Tannoudji, C. Spielman, C.G.B. Garret, D. Bohm, D. Sokolorski, E.H. Hauge, E.H. Hauge, E.P. Wigner, Frank, G. Nimtz, G. Privitera, H.A. Fertig, J. Jakiel, J.P. Falck, K. Imafuku, L.A. MacColl, L.J. Wang, M. Abolhasani, M. Büttiker, M. Büttiker, M.H. Bramhall, M.J. Hagmann, M.W. Mitchell, P. Balcou, R. Landauer, R. Landauer, S. Brouard, S. Chu, S. Esposito, S. Yücel, T.E. Hartman, V. Laude, V.F. Rybachenko, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky   +52 more
core   +1 more source

The Exact Correspondence between Phase Times and Dwell Times in a Symmetrical Quantum Tunneling Configuration [PDF]

, 2007
The general and explicit relation between the phase time and the dwell time for quantum tunneling or scattering is investigated. Considering a symmetrical collision of two identical wave packets with an one-dimensional barrier, here we demonstrate that ...
A. Haybel, A. Ranfagni, A.E. Bernardini, A.E. Bernardini, A.E. Bernardini, A.L. Xavier, A.M. Steinberg, A.P.L. Barbero, B. Segard, C. Spielman, C.G.B. Garret, D. Sokolorski, D. Sokolovski, D. Sokolovski, E.H. Hauge, E.H. Hauge, E.P. Wigner, F.T. Smith, G. Nimtz, H.A. Fertig, H.G. Winful, H.G. Winful, H.G. Winful, J. Jakiel, J.N.L. Connor, J.N.L. Connor, J.P. Falck, K. Imafuku, L.A. MacColl, L.J. Wang, M. Abolhasani, M. Büttiker, M. Büttiker, M.W. Mitchell, R. Landauer, R. Landauer, S. Brouard, S. Chu, S. Longhi, T.E. Hartman, V. Petrillo, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky   +45 more
core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study

Cogent Engineering, 2020
Most of High-impedance faults (HIFs) occur due to broken conductors falling on high-resistivity desert soil in United Arab Emirates remain undetected due to incredibly low fault currents and endanger lives. A reliable detection method is needed.
Perumal Velmurugan, Adhir Baran Chattopadhayay   +1 more
doaj   +1 more source

Absence of split pairs in the cross-correlations of a highly transparent normal metal-superconductor-normal metal electron beam splitter [PDF]

, 2013
The nonlocal conductance and the current cross-correlations are investigated within scattering theory for three-terminal normal metal-superconductor-normal metal (NSN) hybrid structures.
Feinberg, Denis, Flöser, Martina, Mélin, Régis   +2 more
core   +3 more sources

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

A Unified Method for Online Detection of Phase Variables and Symmetrical Components of Unbalanced Three-Phase Systems with Harmonic Distortion

Energies, 2019
This paper presents a method for online detection of symmetrical components of arbitrarily distorted and biased three-phase input signals. This method is based on Second-Order Generalized Integrators (SOGIs), for which a new tuning based on a gradient ...
Christoph M. Hackl, Markus Landerer
doaj   +1 more source

Properties of periodic arrays of symmetric complementary structuresand their application to grid amplifiers [PDF]

, 1998
Deschamps' theorem for n-terminal complementary structures is reviewed. An extension to Deschamps' theorem for a class of three-terminal bounded structures with one axis of symmetry is presented.
Moussessian, Alina, Rosenberg, James J., Rutledge, David B.   +2 more
core   +1 more source