Results 91 to 100 of about 1,189,461 (268)

VST processing facility: first astronomical applications [PDF]

VST–Tube is a new software package designed to process optical astronomical images. It is an automated pipeline to go from the raw exposures to fully calibrated co-added images, and to extract catalogs with aperture and PSF photometry.
Capaccioli, Massimo
core   +2 more sources

Visible Octave Frequency Combs in Silicon Nitride Nanophotonic Waveguides Driven by Ti:Sapphire Lasers

Laser &Photonics Reviews, EarlyView.
Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi, Ewan Allan, Hanna Ostapenko, Pablo Castro‐Marín, Derryck T. Reid, Pascal Del'Haye   +5 more
wiley   +1 more source

Ultimate Intrinsic SNR Depends on B0 Orientation

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This work aims to investigate the effect of B0$$ {B}_0 $$ orientation on the uiSNR in MRI. Methods Electromagnetic simulations were performed on both realistic body models and simplified geometric models. Comparisons between (1) opposite B0$$ {B}_0 $$ directions along the head‐foot (HF) axis, corresponding to head‐first and feet‐first ...
Yuting Wang, Markus W. May, Marcel Gratz, Mark E. Ladd, Stephan Orzada   +4 more
wiley   +1 more source

Report on the organization of the International Astronomical Union,

, 1920
Contains "Statutes of convention" organizing the International Astronomical Union, and reports of committees of the American Section of the International Astronomical Union."Published in the Proceedings of the National Academy of Sciences, June, 1920 ...
International Astronomical Union. American Section.
core  

Whole‐Brain Diffusion MRI at 7T With Universal Multiband GRAPE pTx Pulses

Magnetic Resonance in Medicine, EarlyView.
Purpose To improve signal strength and homogeneity of whole‐brain diffusion‐weighted imaging (DWI) at 7T. Methods Universal multiband excitation and refocusing pulses were optimized with the gradient ascent pulse engineering (GRAPE) algorithm across a database of B1+$$ {B}_1^{+} $$ and B0$$ {B}_0 $$ maps obtained from 20 subjects.
Marten Laufenberg, Daniel Löwen, Mónica Ferreira, Nicolas Boulant, Jennifer Faber, Tony Stöcker   +5 more
wiley   +1 more source

Comparison of Gene Enrichment Between Prostate Tissue and Urine for Non‐Invasive Biomarker Development

The Prostate, EarlyView.
ABSTRACT Background For prostate cancer (PCa), early diagnosis and biomarker‐based patient stratification can improve clinical decision‐making and post‐treatment prognosis. PCa biomarkers are best validated in tissue following comprehensive histopathologic review; however, urinary biomarkers can be obtained non‐invasively and are therefore safer and ...
Yuandong Xing, Minqi Xu, Dan Dion, Vanessa F. Bratti, Ania A. Namin, D. Robert Siemens, Palak G. Patel, Robert J. Gooding, Jane Bayani, Hamid Ghaedi, Anna Y. Lee, David M. Berman   +11 more
wiley   +1 more source

ASTRONOMICAL PLATE ARCHIVES AND SUPERMASSIVE BLACK HOLE BINARIES

Acta Polytechnica, 2013
The recent extensive digitisation of astronomical photographic plate archives, the development of new dedicated software and the use of powerful computers have for the first time enabled effective data mining in extensive plate databases, with wide ...
René Hudec
doaj   +1 more source

astroquery: An Astronomical Web-querying Package in Python

, 2019
astroquery is a collection of tools for requesting data from databases hosted on remote servers with interfaces exposed on the Internet, including those with web pages but without formal application program interfaces. These tools are built on the Python
Deil, Christoph,, Ginsburg, A., Robitaille, Thomas P.,, Liedtke, S., Mommert, Michael, Morris, Brett M., Singer, Leo P., Woillez, Julien, Singer, L., Craig, Matthew W., Segovia, J., de Val-Borro, Miguel,, Sipocz, Brigitta M.,, Deil, C., Craig, M., Guillochon, J., Valtchanov, Ivan, Parikh, M., Cowperthwaite, Philip S.,, Brasseur, C. E., Deil, Christoph, Tollerud, Erik J.,, Persson, Magnus V., Persson, Magnus V.,, Valtchanov, I., Robitaille, T., Mommert, Michael,, Norman, Henrik, Robitaille, Thomas P., Sipocz, B., Tollerud, E., Morris, Brett M.,, Mommert, M., Woillez, Julien,, Lockhart, Kelly E., Guzman, Giannina,, Singer, Leo P.,, Guzman, G., Norman, Henrik,, Tollerud, Erik J., de Val-Borro, Miguel, Lim, P., Woillez, J., Guzman, Giannina, Brasseur, C. E.,, Lim, Pey Lian,, Lockhart, Kelly E.,, Valtchanov, Ivan,, Norman, H., Lockhart, K., Brasseur, C., Craig, Matthew W.,, Ginsburg, Adam, Morris, B., de Val-Borro, M., Lim, Pey Lian, Guillochon, James,, Segovia, Juan-Carlos,, Persson V, M., Segovia, Juan-Carlos, Sipocz, Brigitta M., Ginsburg, Adam,, Cowperthwaite, P., Cowperthwaite, Philip S., Guillochon, James   +64 more
core   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Gaia and IRTF abundance of A-type main-belt asteroids

Astronomy & Astrophysics
Context. The so-called missing-mantle problem is a long-standing issue in planetary science. It states that olivine-rich asteroids should be abundant in the main belt, while this is observationally found not to be the case by dedicated surveys ...
Delbo M., Avdellidou C., Galinier M., Bhat U., Dyer T., Bolin B. T., Galluccio L.   +6 more
doaj   +1 more source