Results 131 to 140 of about 58,921 (147)

Feasibility of patient-specific quality assurance (PSQA) for real-time robotic stereotactic body radiotherapy (SBRT) based on tumor motion traces. [PDF]

J Appl Clin Med Phys
Xu Q, Fan J, Vinogradskiy Y, Chawla AK, Kubicek G, Yang H, Huynh K, LaCouture T, Grimm J, Nie W.   +9 more
europepmc   +1 more source

Loss of neuropeptidergic regulation of cholinergic transmission induces homeostatic compensation in muscle cells to preserve synaptic strength. [PDF]

PLoS Biol
Shao J, Liewald JF, Steuer Costa W, Ruse C, Gruber J, Djamshedzad MS, Gebhardt W, Gottschalk A.   +7 more
europepmc   +1 more source

Quasars: The Observational Perspectives [PDF]

, 2012
The empirical basis of quasar astronomy can be overawing especially in the twenty-first century. A first source of intricacy involves the nomenclature that has evolved to label the multifold phenomenological manifestations now united under the umbrella of active galactic nuclei (AGNs). A further complication involves observations of the many subclasses
Jack W. Sulentic, Mauro D'Onofrio, S. Zamfir, Deborah Dultzin, Dirk Grupe, Alberto Franceschini, Sergey G. Sergeev, Luigi Foschini, Tracey Jane Turner, Martin Gaskell, V. I. Pronik, Paola Marziani, Aleksander Volvach, Raffaella Morganti, Raffaella Morganti, Todd A. Boroson, Heino Falcke, Heino Falcke, Ajit Kembhavi, Gordon T. Richards, Michael R. S. Hawkins, Yuri Neshpor, Greg Shields, Ari Laor, Martin Elvis, Elmar Körding   +25 more
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Quasars

Applied Optics, 1966
A short historical outline of the discovery and a description of observed properties of quasars introduces questions as to their nature. Some of the principal arguments concerning their reality, distance, intrinsic properties and age lead to the conclusion that, while there is room for other points of view; a strong case can be made for the ...
openaire   +2 more sources

Bayesian Quasar Selection and the Quasar Luminosity Function

AIP Conference Proceedings, 2008
I summarize our work on the construction of deep photometric quasar catalogs using a non‐parametric Bayesian classifier based on kernel density estimation. Using only 5‐band optical data from the Sloan Digital Sky Survey (SDSS), we have identified nearly 1,000,000 photometric quasars candidates over ...
Gordon T. Richards, Coryn A.L. Bailer-Jones   +1 more
openaire   +2 more sources