Results 31 to 40 of about 10,272 (178)

Deep learning-enhanced fluorescence microscopy via confocal physical imaging model.

Optics Express, 2023
Confocal microscopy is one of the most widely used tools for high-resolution cellular, tissue imaging and industrial inspection. Micrograph reconstruction based on deep learning has become an effective tool for modern microscopy imaging techniques. While
Baoyuan Zhang, Xue-Bin Sun, Jialuo Mai, Weibo Wang   +3 more
semanticscholar   +1 more source

Focusing a vortex beam with circular polarization: angular momentum

Computer optics, 2023
Based on the Richards-Wolf formalism, we obtain two different exact expressions for the angular momentum (AM) density in the focus of a vortex beam with the topological charge n and with right circular polarization.
Ковалёв, Телегин, Московское шоссе   +2 more
semanticscholar   +1 more source

Toward precise constraints on growth of massive black holes

, 2008
Growth of massive black holes (MBHs) in galactic centers comes mainly from gas accretion during their QSO/AGN phases. In this paper we apply an extended Soltan argument, connecting the local MBH mass function with the time-integral of the QSO luminosity ...
Baker J. G., Bower R. G., Comastri A., Efstathiou G., Ferrarese L., Haehnelt M. G., Kauffmann G., King A. R., King A. R., Kormendy J., Lawrence A., Lin D. N. C., Lipunova G. V., Malbon R. K., Miyaji T., Pringle J. E., Qingjuan Yu, Richstone D., Silk J., Small T. A., Soltan A., Youjun Lu   +21 more
core   +1 more source

Machine-assisted discovery of relationships in astronomy [PDF]

, 2013
High-volume feature-rich data sets are becoming the bread-and-butter of 21st century astronomy but present significant challenges to scientific discovery.
Djorgovski, S. G., Donalek, Ciro, Drake, Andrew J., Graham, Matthew J., Mahabal, Ashish A.   +4 more
core   +2 more sources

Symbiosis: Wolf Lichens Harbour a Choir of Fungi.

Current Biology, 2019
Identification of the fungus Tremella as a consistent fourth component of wolf lichens further challenges the conventional view of lichen symbiosis as a mutualistic interaction between two players.
Benjamin H. Jenkins, T. Richards
semanticscholar   +1 more source

High-order optical Hall effect at the tight focus of laser radiation

Computer optics, 2023
In this work, by the Richards-Wolf method, which describes the behavior of electromagnetic radiation at the tight focus, it is shown that high-order spin and orbital Hall effects take place in the focal plane.
V. Kotlyar, S. Stafeev, E. S. Kozlova
semanticscholar   +1 more source

Supermassive Black Holes in the Hierarchical Universe: A General Framework and Observational Tests

, 2009
(Abridged) We present a simple framework for the growth and evolution of supermassive black holes (SMBHs) in the hierarchical structure formation paradigm.
Adelberger, Bahcall, Barger, Begelman, Bell, Bennert, Binney, Bryan, Canalizo, Cole, Courteau, Eisenstein, Fan, Fan, Ferrarese, Ferrarese, Francke, Gao, Gebhardt, Graham, Graham, Graham, Granato, Greene, Haiman, Haiman, Heckman, Hennawi, Hennawi, Ho, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Jiang, Jiang, Jiang, King, Kollmeier, Kormendy, Lacey, Lapi, Lauer, Lidz, Magorrian, Marconi, Martini, Mo, Myers, Myers, Myers, Myers, Navarro, Richards, Richstone, Ross, Schneider, Serber, Shankar, Shankar, Shaver, Shen, Shen, Shen, Shen, Silk, Silverman, Small, Soltan, Steffen, Stewart, Strand, Thacker, Tinker, Tremaine, Tundo, Ueda, Volonteri, Warren, Wechsler, Wetzel, White, Woo, Wyithe, Wyithe, York, Yu, Yu, Yue Shen, Zel'dovich, Zhang   +91 more
core   +1 more source

Subwavelength micropolarizer in a gold film for visible light [PDF]

, 2016
Engineering and Physical Sciences Research Council (EPSRC) (EP/L017008/1); European Research Council (337508); Russian Foundation for Basic Research (RFBR) (14-07-97039, 14-29-07133, 15-07-01174, 15-37-20723, 16-07-00990, 16-29-11698); Ministry of ...
Kotlyar, Maria V., Kotlyar, Victor V., Nalimov, Anton G., O'Faolain, Liam, Stafeev, Sergey S.   +4 more
core   +2 more sources

Modified Richards’ Equation to Improve Estimates of Soil Moisture in Two-Layered Soils after Infiltration

Water, 2018
Soil moisture distribution plays a significant role in soil erosion, evapotranspiration, and overland flow. Infiltration is a main component of the hydrological cycle, and simulations of soil moisture can improve infiltration process modeling.
Honglin Zhu, Ting-xi Liu, Baolin Xue, Y. A., Guoqiang Wang   +4 more
semanticscholar   +1 more source

Spin angular momentum at the sharp focus of a cylindrical vector vortex beam

Computer optics, 2023
Sharp focusing of a light field with double (phase and polarization) singularity is studied. Using the Richards-Wolf method, an exact analytical expression for the longitudinal projection of the spin angular momentum (SAM) vector at the focus is obtained.
V. Kotlyar, S. Stafeev, A. Telegin
semanticscholar   +1 more source