Results 41 to 50 of about 5,298,176 (299)

Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production

Frontiers in Earth Science, 2022
Hydrate plug in the drainage line is a serious flow assurance problem for the pilot production of offshore natural gas hydrates. Current research focuses on hydrate deposition in the annular flow and the oil-dominated system.
Yu Guimin, Jin Hao, Kong Qingwen
doaj   +1 more source

A Novel Method to Identify AGNs Based on Emission Line Excess and the Nature of Low-luminosity AGNs in the Sloan Digital Sky Survey: I - A Novel Method

, 2012
(Abridged) We develop a novel technique to identify active galactic nuclei (AGNs) and study the nature of low-luminosity AGNs in the Sloan Digital Sky Survey. This is the first part of a series of papers and we develop a new, sensitive method to identify
Tanaka, Masayuki
core   +1 more source

The Origin of [OII] in Post-Starburst and Red-Sequence Galaxies in High-Redshift Clusters [PDF]

, 2010
We present the first results from a near-IR spectroscopic campaign of the Cl1604 supercluster at z~0.9 and the cluster RX J1821.6+6827 at z~0.82 to investigate the nature of [OII] 3727A emission in cluster galaxies at high redshift. Of the 401 members in
A. Shapley, B. C. Lemaux, Balogh, Balogh, Binette, Buat, Calzetti, Calzetti, Caputi, Chary, Colina, D. Kocevski, Dressler, Dressler, Dressler, Dressler, Dressler, Erb, Filippenko, Fisher, G. K. Squires, Gal, Gal, Gioia, Gladders, Goto, Gómez, Hashimoto, Heckman, Henry, Jansen, Jansen, Kewley, Kewley, Kewley, Kewley, Kewley, Kewley, Kocevski, Kocevski, Kodama, L. M. Lubin, Lemaux, Liu, Lubin, Lubin, Miller, Moustakas, Moustakas, Mullis, Oemler, Oke, Poggianti, Poggianti, Quintero, R. R. Gal, Rudnick, Silverman, Simcoe, Skrutskie, Taniguchi, Terlevich, Tody, Tran, Tremonti, van Dokkum, Weiner, Yan   +67 more
core   +2 more sources

Treatment Decision‐Making Roles and Preferences Among Adolescents and Young Adults With Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Decision‐making (DM) dynamics between adolescents and young adults (AYAs) with cancer, parents, and oncologists remain underexplored in diverse populations. We examined cancer treatment DM preferences among an ethnically and socioeconomically diverse group of AYAs and their parents.
Amanda M. Gutierrez, Jill O. Robinson, Wendy A. Allen‐Rhoades, Hadley S. Smith, Isabel Canfield, Rebecca L. Hsu, Sarah R. Scollon, Lauren R. Desrosiers‐Battu, Nicole M. Schneider, Frank Y. Lin, Donald Williams Parsons, Sharon E. Plon, Mary A. Majumder, Janet Malek, Amy L. McGuire   +14 more
wiley   +1 more source

Line Formation in Moving Atmospheres [PDF]

International Astronomical Union Colloquium, 1970
AbstractWe discuss an integral equation method that permits the calculation of the line source functions and of the emergent profiles in finite and semiinfinite atmospheres with macroscopic motion normal to the surface. Solutions are presented for a semiinfinite atmosphere with a temperature rise in the outward direction and with a flow that decays ...
openaire   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Quasars: From the Physics of Line Formation to Cosmology

Atoms, 2019
Quasars accreting matter at very high rates (known as extreme Population A (xA) or super-Eddington accreting massive black holes) provide a new class of distance indicators covering cosmic epochs from the present-day Universe up to less than 1 Gyr from ...
Paola Marziani, Edi Bon, Natasa Bon, Ascension del Olmo, Mary Loli Martínez-Aldama, Mauro D’Onofrio, Deborah Dultzin, C. Alenka Negrete, Giovanna M. Stirpe   +8 more
doaj   +1 more source

Cyclotron line formation in a relativistic outflow [PDF]

AIP Conference Proceedings, 1996
There is mounting evidence that, if gamma-ray bursters are Galactic in origin, they are located in a Galactic corona at distances greater than 100 kpc. This has created a need to explore new models of cyclotron line formation. In most previous calculations the line-forming region was modeled as a static slab of plasma, optically thin to continuum ...
Isenberg, Michael, Lamb, D. Q., Wang, John C. L.   +2 more
openaire   +2 more sources

Do we need to know the temperature in prestellar cores?

, 2007
Molecular line observations of starless (prestellar) cores combined with a chemical evolution modeling and radiative transfer calculations are a powerful tool to study the earliest stages of star formation. However, conclusions drawn from such a modeling
Henning, Th., Pavlyuchenkov, Ya., Wiebe, D.   +2 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source