Spacelike localization of long-range fields in a model of asymptotic electrodynamics

A previously proposed algebra of asymptotic fields in quantum electrodynamics is formulated as a net of algebras localized in regions which in general have unbounded spacelike extension. Electromagnetic fields may be localized in `symmetrical spacelike cones', but there are strong indications this is not possible in the present model for charged fields, which have tails extending in all space directions. Nevertheless, products of appropriately `dressed' fermion fields (with compensating charges) yield bi-localized observables.Comment: 29 pages, accepted for publication in Annales Henri Poincar\'

Czy biografia jest prawdą?

On March 25, 2015, The Center for the Study of Transformative Lives at New York University and the NYU Biography Seminar co-hosted a panel discussion titled Is Biography True? Introduced by Philip Kunhardt and hosted by the late James Atlas, the panel featured three Pulitzer Prize-winning biographers: Ron Chernow, author of Washington: A Life; John Matteson, author of Eden’s Outcasts: The Story of Louisa May Alcott and her Father; and Stacy Schiff, author of Vera, Mrs. Vladimir Nabokov. The following is a transcript of that discussion.]W dniu 25 marca 2015 r. The Center for the Study of Transformative Lives at New York University i NYU Biography Seminar zorganizowały wspólnie dyskusję panelową zatytułowaną Is Biography True? W dyskusji, którą otworzył Philip Kunhardt, a której gospodarzem był nieżyjący już James Atlas, uczestniczyło troje zdobywców nagrody Pulitzera: Ron Chernow, autor biografii Washington: A Life; John Matteson, autor książki Eden’s Outcasts: The Story of Louisa May Alcott and her Father, oraz Stacy Schiff, autorka biografii pt. Vera, Mrs. Vladimir Nabokov. W niniejszej sekcji znajduje się zapis tej dyskusji

Fluoroscopically guided thin needle aspiration biopsy of the abdomen and retroperitoneum

The results of 49 transabdominal and translumbar thin needle percutaneous aspiration biopsies in patients suspected of having malignant disease are reported. A correct diagnosis was obtained in 40 cases. Placement of the Chiba needle was accomplished by fluoroscopically controlled biplane radiography during constrast examinations. No complications were encountered. The technique allows cytologic diagnosis of malignancy without high risk exploratory surgery, prolonged hospitalization, or delay of treatment. Use of fluoroscopic needle guidance and biplane radiography for confirmation of position using various contrast examinations as markers is felt to be superior to either CT or ultrasound. The technique is readily available in all radiology departments