Results 51 to 60 of about 230,604 (269)

Circumventing spontaneous Raman noise in a correlated photon pair source

APL Photonics, 2016
We propose a dual-pump third-order nonlinear scheme for producing pairs of correlated photons that is less susceptible to Raman noise than typical spontaneous four-wave mixing (SFWM) methods.
Daniel R. Blay, L. G. Helt, M. J. Steel
doaj   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Effective photons in weakly absorptive dielectric media and the Beer–Lambert–Bouguer law

New Journal of Physics, 2014
We derive effective photon modes that facilitate an intuitive and convenient picture of photon dynamics in a structured Kramers–Kronig dielectric in the limit of weak absorption.
A C Judge, J S Brownless, N A R Bhat, J E Sipe, M J Steel, C Martijn de Sterke   +5 more
doaj   +1 more source

TWO ELEMENT MICROSTRIP ANTENNA ARRAY USING STAR SLOT ELECTROMAGNETIC BAND GAP STRUCTURE [PDF]

Journal of Engineering Science (Chişinău), 2019
This paper deals with the performance of two element antenna array without and with electromagnetic band gap structures. The antenna arrays are using Mentor Graphics IE3D software and measurements have been taken using vector network analyzer.
Rao, K. Prahlada, Vani, R.M, Hunagund, P.V.   +2 more
doaj   +1 more source

Broadband, High Efficiency OMT in E-Band

IEEE Access, 2022
A high-performance, broadband E-Band orthomode transducer (OMT) was designed and fabricated for a dedicated frequency converter. Cross-polarized signals between 71 and 86 GHz, received in a TE11 mode circular waveguide needed to be split into separate ...
Gregory Peter Le Sage, Christopher D. Nantista   +1 more
doaj   +1 more source

Wide-bandwidth low-loss 19-cell hollow core photonic band gap fiber and its potential for low latency data transmission

, 2012
A record low loss (3.5dB/km) for a wide operating bandwidth HC-PBGF is reported. Detailed time-of-flight measurements are also presented, enabling first measurements of latency and differential group delay between mode groups in HC ...
N. V. Wheeler, Gray, D. R., E. Numkam, Wheeler, N. V., Hayes, J. R., D. R. Gray, Petrovich, M. N., Baddela, N., Poletti, F., Numkam, E., D. J. Richardson, Slavík, R., N. Baddela, M. N. Petrovich, R. Slavík, J. R. Hayes, F. Poletti, Richardson, D. J.   +17 more
core   +1 more source

Analysis of the energy harvesting performance of a piezoelectric bender outside its resonance [PDF]

, 2014
When the frequency of the source of vibration of a piezolectric generator is significantly different from its eigenfrequency, the dielectric power losses become prominent and decrease the amount of power which is practically harvested.
AMBERG, Michel, GIRAUD, Frédéric, DAWSON, Francis, GIRAUD-AUDINE, Christophe, LEMAIRE-SEMAIL, Betty, Amanci, Adrian, AMANCI, Adrien   +6 more
core   +1 more source

Trajectories of Physical Function in Canadian Children With Juvenile Idiopathic Arthritis

Arthritis Care &Research, EarlyView.
Objective We describe trajectories of physical function in children newly diagnosed with juvenile idiopathic arthritis (JIA) and identify trajectories with persisting functional impairments and associated baseline characteristics. Methods We included patients enrolled in the Canadian Alliance of Pediatric Rheumatology Investigators (CAPRI) Registry ...
Clare Cunningham, Meghan McPherson, Lillian Lim, Roberta A. Berard, Matthew Berkowitz, Jean‐Philippe Proulx‐Gauthier, Brian M. Feldman, Nicole Johnson, Dax G. Rumsey, Heinrike Schmeling, Lori B. Tucker, Thomas Loughin, Kristin M. Houghton, Jaime Guzman, for the Canadian Alliance of Pediatric Rheumatology Investigators (CAPRI) Registry Investigators, David A. Cabral, Gaëlle Chédeville, Ciarán M. Duffy, Kerstin Gerhold, Jaime Guzman, Linda Hiraki, Adam M. Huber, Heinrike Schmeling, Natalie J. Shiff, Lori B. Tucker, Julie Barsalou, Daniah Basodan, Michelle Batthish, Roberta A. Berard, Nicholas Blanchette, Gilles Boire, Roxana Bolaria, Alessandra Bruns, David A. Cabral, Sarah Campillo, Tania Cellucci, Mercedes Chan, Gaëlle Chédeville, Amieleena Chhabra, Julie Couture, Paul Dancey, Jean‐Jacques De Bruycker, Erkan Demirkaya, Muhammed Dhalla, Ciarán M. Duffy, Talal El Tal, Tommy Gerschman, Jaime Guzman, Liane Heale, Julie Herrington, Kristin M. Houghton, Adan M. Huber, Andrea Human, Nicole Johnson, Roman Jurencak, Bianca Lang, Claire LeBlanc, Lillian Lim, Lily S. H. Lim, Nadia Luca, Jeanine McColl, Tara McGrath, Tamara McMillan, Megan McPherson, Paivi Miettunen, Kimberly Morishita, Honyan Ng, Jonathan Park, Jean‐Philippe Proulx‐Gauthier, Johannes Roth, Evelyn Rozenblyum, Dax G. Rumsey, Heinrike Schmeling, Rosie Scuccimarri, Gordon Soon, Rebeka Stevenson, Elizabeth Stringer, Herman Tam, Lori B. Tucker, Marinka Twilt, Ruud H. J. Verstegen, Karen Watanabe Duffy   +81 more
wiley   +1 more source

Active temporal multiplexing of indistinguishable heralded single photons

Nature Communications, 2016
Deterministically generated single photons are useful for quantum communications, but the processes that create such light are often non-deterministic.
C. Xiong, X. Zhang, Z. Liu, M. J. Collins, A. Mahendra, L. G. Helt, M. J. Steel, D. -Y. Choi, C. J. Chae, P. H. W. Leong, B. J. Eggleton   +10 more
doaj   +1 more source

Bandwidth and topological bandwidth of graphs with few P4's

Discrete Applied Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ton Kloks, Richard B. Tan
openaire   +2 more sources