Results 41 to 50 of about 83,297 (253)

Compatibility of the large quasar groups with the concordance cosmological model [PDF]

, 2016
We study the compatibility of large quasar groups with the concordance cosmological model. Large quasar groups are very large spatial associations of quasars in the cosmic web, with sizes of 50–250 h−1 Mpc.
Campusano, Luis E., Clowes, Roger G., Graham, Matthew J., Marinello, Gabriel E., Söchting, Ilona K., Williger, Gerard M.   +5 more
core   +2 more sources

Gaussian Processes for Predictive QSAR Modeling of Chromatographic Processes

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Chromatography is a key unit operation in the biopharmaceutical manufacturing process used for protein purification and polishing. Design and optimization of these processes are resource‐intensive resulting from the complex combinatorial design space.
Harini Narayanan, Douglas Nolan, Lijuan Li, Edward King, Andrew Fiordalis, David Benjamin Nickel, George Parks, J. Christopher Love   +7 more
wiley   +1 more source

New Superluminal Quasars [PDF]

Symposium - International Astronomical Union, 1986
Since 1977 we have been engaged on a project to survey the milliarcsecond structure and internal motions of a complete, unbiased sample of 65 radio sources (Pearson and Readhead 1984). One of the goals of the project was to discover more superluminal sources and find out how common they are.
T. J. Pearson, P. D. Barthel, A. C. S. Readhead, C. R. Lawrence   +3 more
openaire   +1 more source

Towards an Understanding of Changing-Look Quasars: An Archival Spectroscopic Search in SDSS

, 2016
The uncertain origin of the recently-discovered `changing-looking' quasar phenomenon -- in which a luminous quasar dims significantly to a quiescent state in repeat spectroscopy over ~10 year timescales -- may present unexpected challenges to our ...
Anderson, Scott F., Blanton, Michael R., Cales, Sabrina L., Dwelly, Tom, Eracleous, Michael, Georgakakis, Antonis, Green, Paul J., Greene, Jenny E., LaMassa, Stephanie M., Merloni, Andrea, Morganson, Eric, Ruan, John J., Runnoe, Jessie C., Schneider, Donald P., Shen, Yue, Wilkinson, Tessa D.   +15 more
core   +2 more sources

A flux-ratio anomaly in the CO spectral line emission from gravitationally-lensed quasar MG J0414+0534 [PDF]

, 2018
We present an analysis of archival observations with the Atacama Large (sub-)Millimetre Array (ALMA) of the gravitationally lensed quasar MG J0414+0534, which show four compact images of the quasar and an Einstein ring from the dust associated with the ...
McKean, J. P., Stacey, H. R.
core   +3 more sources

Volatile Fatty Acid Recovery from Arrested Anaerobic Digestion for the Production of Sustainable Aviation Fuel: A Review

Fermentation, 2023
The process of producing sustainable aviation fuel (SAF) from organic waste involves the use of volatile fatty acids (VFAs) as intermediates that are obtained via arrested anaerobic digestion (AAD) and VFA recovery.
Xumeng Ge, Yian Chen, Violeta Sànchez i Nogué, Yebo Li   +3 more
doaj   +1 more source

Anisotropy Analysis of Bamboo and Tooth Using 4‐Angle Polarization Micro‐Spectroscopy

Nano Select, EarlyView.
Super‐resolution via orientation: spatial distribution of specific molecular vibrations are revealed at 1/20 of the diffraction limit. ABSTRACT To investigate the anisotropic properties of biomaterials, two distinct classes are considered as follows: polymer‐based (cellulose in plants) and crystalline‐based (enamel in teeth), each demonstrating ...
Meguya Ryu, Hsin‐Hui Huang, Jitraporn Vongsvivut, Soon Hock Ng, Irma Dumbrytė, Donatas Narbutis, Mangirdas Malinauskas, Saulius Juodkazis, Junko Morikawa   +8 more
wiley   +1 more source

SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8

, 2010
We report the discovery of a gravitationally lensed quasar identified serendipitously in the Sloan Digital Sky Survey (SDSS). The object, SDSS J094604.90+183541.8, was initially targeted for spectroscopy as a luminous red galaxy, but the SDSS spectrum ...
Abazajian, Bolton, Carilli, Comerford, Donald P. Schneider, Eisenstein, Fuyan Bian, Gunn, Hall, Ian D. McGreer, Inada, Inada, Ivezic, Johnston, Kara Farnsworth, Kayo, Keeton, Keeton, Kochanek, Kozłowski, Lupton, Lupton, Masamune Oguri, McMahon, Michael A. Strauss, Naohisa Inada, Oguri, Oguri, Oguri, Patrick B. Hall, Peng, Peng, Pier, Pindor, Refsdal, Richards, Richards, Richards, Richards, Richards, Riechers, Schlegel, Schmidt, Schneider, Smith, Stoughton, Wyithe, Xiaohui Fan, York   +48 more
core   +1 more source

The Physical Relation between Disc and Coronal Emission in Quasars

Frontiers in Astronomy and Space Sciences, 2018
We propose a modified version of the observed non-linear relation between the X-ray (2 keV) and the ultraviolet (2,500 Å) emission in quasars (i.e., LX∝LUVγ) which involves the full width at half-maximum, FWHM, of the broad emission line, i.e., LX∝LUVγ ...
Elisabeta Lusso, Guido Risaliti, Guido Risaliti   +2 more
doaj   +1 more source

Flame Retardant Polyolefins Using Fibers From Leather Waste: Adjusting Extrusion Variables to Balance the Property Profile

Journal of Vinyl and Additive Technology, EarlyView.
Adjusting extrusion variables are a key to balance the flame retardancy and mechanical properties of polyolefin/leather waste fiber composites. ABSTRACT The extrusion processing variables represent a key to the optimal use of additives and thus the development of flame‐retardant polymer composites. Adjusting the property profile, for example, finding a
Guadalupe Sanchez‐Olivares, Sven Brehme, Fausto Calderas, Bernhard Schartel   +3 more
wiley   +1 more source