Results 11 to 20 of about 572,107 (346)

Penguin contributions to CP phases in $B_{d,s}$ decays to charmonium [PDF]

open access: yesPhysical Review Letters, 2015
The precision of the CP phases $2\beta$ and $2\beta_s$ determined from the mixing-induced CP asymmetries in $B_d\to J/\psi K_S$ and $B_s\to J/\psi \phi$, respectively, is limited by the unknown long-distance contribution of a penguin diagram involving up
Frings, Philipp   +2 more
core   +2 more sources

REDUCING PENGUIN POLLUTION [PDF]

open access: yesInternational Journal of Modern Physics A, 2013
The most common decay used for measuring 2βs, the phase of [Formula: see text] mixing, is [Formula: see text]. This decay is dominated by the color-suppressed tree diagram, but there are other contributions due to gluonic and electroweak penguin diagrams.
Bhattacharya, Bhubanjyoti   +2 more
openaire   +3 more sources

Direct and Indirect Effects of Penguin Feces on Microbiomes in Antarctic Ornithogenic Soils

open access: yesFrontiers in Microbiology, 2018
Expansion of penguin activity in maritime Antarctica, under ice thaw, increases the chances of penguin feces affecting soil microbiomes. The detail of such effects begins to be revealed.
Yudong Guo   +8 more
doaj   +2 more sources

Penguin amplitudes in hadronic B decays: NLO spectator scattering [PDF]

open access: green, 2006
We present results on the NLO (alpha_s^2) spectator-scattering corrections to the topological penguin amplitudes for charmless hadronic two-body B-decays in QCD factorization.
Sebastian Jäger
openalex   +5 more sources

Mortality of a juvenile Magellanic penguin (Spheniscus magellanicus, Spheniscidae) associated with the ingestion of a PFF-2 protective mask during the Covid-19 pandemic

open access: yesMarine Pollution Bulletin, 2021
We report the discovery of a dead Magellanic penguin (Spheniscus magellanicus) found on Juquehy Beach (23°46′S 45°44′W), municipality of São Sebastião, Brazil, on September 9th 2020.
Hugo Gallo Neto   +7 more
semanticscholar   +1 more source

Mitf Involved in Innate Immunity by Activating Tyrosinase-Mediated Melanin Synthesis in Pteria penguin

open access: yesFrontiers in Immunology, 2021
The microphthalmia-associated transcription factor (MITF) is an important transcription factor that plays a key role in melanogenesis, cell proliferation, survival and immune defense in vertebrate.
F. Yu   +6 more
semanticscholar   +1 more source

Penguin: A Tool for Predicting Pseudouridine Sites in Direct RNA Nanopore Sequencing Data

open access: yesbioRxiv, 2021
Pseudouridine is one of the most abundant RNA modifications, occurring when uridines are catalyzed by Pseudouridine synthase proteins. It plays an important role in many biological processes and also has an importance in drug development.
Doaa Hassan   +4 more
semanticscholar   +1 more source

Coase's Penguin, or Linux and the Nature of the Firm [PDF]

open access: yesarXiv.org, 2001
For decades our common understanding of the organization of economic production has been that individuals order their productive activities in one of two ways: either as employees in firms, following the directions of managers, or as individuals in ...
Y. Benkler
semanticscholar   +1 more source

Carbon and nitrogen isotope fractionation of amino acids in an avian marine predator, the gentoo penguin (Pygoscelis papua) [PDF]

open access: goldEcology and Evolution, 2015
Compound-specific stable isotope analysis (CSIA) of amino acids (AA) has rapidly become a powerful tool in studies of food web architecture, resource use, and biogeochemical cycling.
Kelton W. McMahon   +4 more
openalex   +2 more sources

Validating accelerometry-derived proxies of energy expenditure using the doubly labelled water method in the smallest penguin species

open access: yesBiology Open, 2021
Understanding energy use is central to understanding an animal's physiological and behavioural ecology. However, directly measuring energy expenditure in free-ranging animals is inherently difficult.
G. J. Sutton   +3 more
doaj   +1 more source

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