Results 101 to 110 of about 16,466,590 (349)

Group velocity in lossy periodic structured media

, 2010
In lossless periodic media, the concept of group velocity is fundamental to the study of propagation dynamics. When spatially averaged, the group velocity is numerically equivalent to energy velocity, defined as the ratio of energy flux to energy density
Steel, M, McPhedran, R, Chen, P, Poulton, C, De Sterke, C, Asatryan, A, Botten, L   +6 more
core   +2 more sources

Number and location of zero-group-velocity modes.

Journal of the Acoustical Society of America, 2012
The frequency-wavenumber spectra of laminated media often exhibit anomalous modes with descending branches whose group velocity is negative, and these terminate at a minimum point at which the group velocity transitions from negative to positive.
E. Kausel
semanticscholar   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Severin and Velocity Girl concert flier, d.c. Space, Washington, D.C. - January 1, 1991

, 1991
Advertising flier promoting a concert by the Washington, D.C. punk band, Severin, and the Washington, D.C. indie rock band, Velocity Girl.

core  

Short-term variability in Greenland Ice Sheet motion forced by time-varying meltwater inputs: implications for the relationship between subglacial drainage system behavior and ice velocity. [PDF]

, 2012
High resolution measurements of ice motion along a 120 km transect in a land-terminating section of the GrIS reveal short-term velocity variations (<1 day), which are forced by rapid variations in meltwater input to the subglacial drainage system from
Cowton, Thomas, Bartholomew, Ian, Nienow, Peter, Sole, A., Mair, Douglas, Mair, D., Sole, Andrew, King, Matt A., Cowton, T., Bartholomew, I., King, M.A., Nienow, P.   +11 more
core   +1 more source

Improved Isolation Ratio in MSSWs‐Based Inline Interference Device Using Dipolar‐Coupled SWs Across a Micro‐Air Gap

Advanced Physics Research
Control of spin‐wave (SW) propagation is demonstrated by introducing a micro‐air gap into a nanometer‐thick yttrium iron garnet (Y3Fe5O12, YIG) microstructure. SWs traverse the gap with reduced intensity following an exponential–linear decay with air gap
Md Shamim Sarker, E M K Ikball Ahamed, Hiroyasu Yamahara, Zhiqiang Liao, Siyi Tang, Haining Li, Sankar Ganesh Ramaraj, Munetoshi Seki, Hitoshi Tabata   +8 more
doaj   +1 more source

Frequency dependence of the group velocity of surface polaritons in a single-axle crystal of the Würcite type

Физика волновых процессов и радиотехнические системы
Background. Surface polaritons attract the attention of researchers and engineers for their unique properties and promising applications in the field of micro- and nanoelectronics.
Irina I. Borodina, Valeriy V. Yatsishen
doaj   +1 more source

Fluid Biomarkers of Disease Burden and Cognitive Dysfunction in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Identifying objective biomarkers for progressive supranuclear palsy (PSP) is crucial to improving diagnosis and establishing clinical trial and treatment endpoints. This study evaluated fluid biomarkers in PSP versus controls and their associations with regional 18F‐PI‐2620 tau‐PET, clinical, and cognitive outcomes.
Roxane Dilcher, Charles B. Malpas, Stuart J. McDonald, William T. O’Brien, Craig Despott, Kelly L. Bertram, Matthew P. Pase, Lukas Frontzkowski, Meng Law, Terence J. O’Brien, Lucy Vivash   +10 more
wiley   +1 more source

Velocity Girl set list, Washington Peace Center, Washington, D.C., January 12, 1992

, 1992
A set list from a concert by the Washington, D.C. indie rock band, Velocity Girl. The concert occurred at the Washington Peace Center in Washington, D.C. on Sunday, January 12, 1992.
Velocity Girl (Musical group)
core  

Tunable single-cycle pulse compression at the group-velocity horizon

, 2014
An adjustable adiabatic soliton compression scheme is presented, enabling pulse generation in the single-cycle regime. The compression comes without external dispersion compensation and is naturally stimulated by two-pulse collisions in an optical event ...
Amiranashvili, Shalva, Shalva Amiranashvili, Demircan, Ayhan, Gunter Steinmeyer, Morgner, Uwe, Ayhan Demircan, Uwe Morgner, Brée, Carsten, Carsten Bree, Steinmeyer, Günter   +9 more
core   +1 more source