نتایج جستجو برای: adler
تعداد نتایج: 1620 فیلتر نتایج به سال:
We emphasise the EMC spin effect as a problem of symmetry and discuss the renormalisation of the C = +1 axial tensor operators. This involves the generalisation of the Adler-BellJackiw anomaly to each of these operators. We find that the contribution of the axial anomaly to the spin dependent structure function g1(x,Q ) scales at O(αs). This means that the anomaly can be a large x effect in g1....
We consider the Adler-Bardeen anomaly of the U (1) axial current in abelian and non-abelian gauge theories and present its algebraic characterization as well as an explicit evaluation proving regularization scheme independence of the anomaly. By extending the gauge coupling to an external space-time dependent field we get a unique definition for the quantum corrections of the topological term. ...
Practical GastroenteroloGy • march 2013 Douglas G. Adler MD, FACG, AGAF, FASGE 1 and Amer Alkhatib MD 2 1 University of Utah School of Medicine, Huntsman Cancer Center, Salt Lake City, UT 2 Cancer Treatment Centers of America, Tulsa, OK Douglas G. Adler Amer Alkhatib Biliary Cannulation: An Update on Tools and Techniques Douglas G. Adler MD, FACG, AGAF, FASGE, Series Editor Frontiers in endosco...
For a hundred years it was known that motile bacteria are attracted to a variety of small organic molecules. However, few scientists were interested in bacterial chemotaxis, probably because they were unwilling to believe that these lowly organisms possessed any capability for information processing or could exhibit even simple forms of behavior. Despite evidence to the contrary, it was general...
Elias J. Anaissie, Brahm H. Segal, John R. Graybill, Carola Arndt, John R. Perfect, Michael Kleinberg, Peter Pappas, Danny Benjamin, Robert Rubin, Judith A. Aberg, Elisabeth E. Adderson, Felice C. Adler-Shohet, Hamdi Akan, Murat Akova, Nikolaos G. Almyroudis, Barbara D. Alexander, David Andes, Antonio Arrieta, John W. Baddley, Michelle A. Barron, Howard Belzberg, Helen W. Boucher, Thomas G. Boy...
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