Results 151 to 160 of about 939,149 (288)

Identifying the principal mechanism of star formation feedback. [PDF]

Sci Adv
Li C, Li R, Qiu K, Krco M, Li D, Wang H, Lyu X, Duan Y, Fang M, Chen X, Wang L, Feng H, Zhang S, Zhang M, Zhang S, Cao Y, Wang Y, Gong Y, Du F, Chen Z, Su Y, Ma Y, Xing Y, Zheng Y, Zhang T, Niu S, Li C, Liu J, Zhang Z, Guo Y.   +29 more
europepmc   +1 more source

Reconfigurable Geometric Phase Matching by Multilayered Nonlinear Thin‐Film Crystals

Laser &Photonics Reviews, EarlyView.
The concept of geometric phase matching is demonstrated as a dynamically reconfigurable approach for tunable nonlinear wave mixing in multilayered nonlinear thin‐film crystals. Experimental results reveal full modulation in a bilayer structure and near‐perfect spin‐selective phase matching of second‐harmonic generation in an eight‐layer configuration ...
Danielle Ben‐Haim, Mai Tal, Xiaoxi Xu, Tal Ellenbogen   +3 more
wiley   +1 more source

Periodic radio and X-ray emission from an accreting white dwarf binary. [PDF]

Nat Astron
Rose K, Pritchard J, Murphy T, Driessen LN, Kaplan DL, Caleb M, Wang Z, Zic A, Andreoni I, Carney J, Barlow BN, Dobie D, Gu M, Heald G, Huber D, Lenc E, Leung JK, Lu W, Momose R, Pedersen MG, Qu Y, Rea N, de Ruiter I, Shaji K, Sivakoff GR, Thomson AJM, Wang YL, Yang GJ, Zahedy F.   +28 more
europepmc   +1 more source

Radio Astronomy Began at Bell Labs

, 1933
Radio astronomy began at Bell Laboratories when Karl Jansky used a rotating antenna to discover radio waves coming from the Milky Way.
Bell Telephone Laboratories
core  

Multispectral Mid‐Infrared Imaging With Incoherent Light via Adiabatic Upconversion

Laser &Photonics Reviews, EarlyView.
We demonstrate room‐temperature broadband MIR imaging based on adiabatic frequency upconversion, driven by a Q‐switched pump laser and incoherent illumination. The small‐foot‐print system upconverts the spectral range to the visible domain, without scanning, thermal control and with spatial resolution below 20μm$20\mathrm{\mu}\mathrm{m}$.
Daniel Beitner, Ziv Abelson, Eyal Hollander, Omri Meron, Haim Suchowski   +4 more
wiley   +1 more source

Imaging black holes: a VLBI success story. [PDF]

Astrophys Space Sci
Zensus JA.
europepmc   +1 more source

Design of an In Vivo‐Like Phantom for Quantitative Body CEST MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To design and validate a reproducible in vivo‐like fat‐containing CEST phantom that enables robust quantitative CEST MRI for body applications by providing physiologically realistic relaxation properties, relevant endogenous CEST contrasts (amide, guanidino, rNOE, and semi‐solid MT), and a controlled fat component.
Petr Menshchikov, Petr Bulanov, Neele Kempa, Mark E. Ladd, Andreas Korzowski, Philip S. Boyd   +5 more
wiley   +1 more source

The Computed Microwave Spectrum of the Protonated Fullerene C₆₀H^. [PDF]

ACS Earth Space Chem
Nemes L, Oomens J, Esposito VJ, Boudon V, Tielens AGGM.   +4 more
europepmc   +1 more source

Toward Brain Biosignature at 7 T—Repeatability of a Multiparametric CEST, QSM, QTI, and Sodium Imaging Protocol

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the repeatability of an extended multiparametric 7 T MRI protocol for voxel‐wise tissue characterization combining morphological, CEST, QSM, QTI, and Sodium contrasts. Methods A repeatability study was performed in 12 volunteers without diagnosed neurological disease on a 7 T MRI system, using a comprehensive acquisition ...
Annika Hofmann, Martin Freudensprung, Lion Mücke, Tobias Wilferth, Zijin Yang, Dominik Perrin, Julius Glaser, Katharina Tkotz, Magda Duarte, Simon Weinmüller, Oliver Chaudry, Annemarie Wirth, Angelika Mennecke, Oliver Gödicke, Patrick Liebig, Lena V. Gast, Philipp Ehses, Clemens Stilianu, Rudolf Stollberger, Jannis Hanspach, Alexander German, Jürgen Winkler, Michael Uder, Arnd Doerfler, Sebastian Bickelhaupt, Andreas Maier, Katharina Breininger, Moritz Zaiss, Armin M. Nagel, Frederik B. Laun, Florian Knoll   +30 more
wiley   +1 more source

Jets from a stellar-mass black hole are as relativistic as those from supermassive black holes. [PDF]

Nat Commun
Zhang X, Yu W, Carotenuto F, Fender R, Motta S, Bahramian A, Miller-Jones JCA, Russell TD, Corbel S, Woudt PA, Atri P, Knigge C, Sivakoff GR, Hughes AK, van den Eijnden J, Matthews JH, Baglio MC, Saikia P.   +17 more
europepmc   +1 more source