منابع مشابه
The Tesla Cryo-plants
The Tera-eV Energy Superconducting Linear Accelerator (TESLA) is a 32 km long superconducting linear electron/positron collider of 500 GeV centre of mass energy (upgradeable to 800 GeV), presently in the planning phase at DESY [1,2]. About 21000 superconducting RF 9-cell cavities have to be cooled with superfluid helium at 2 K. The cavities are assembled in groups of 12 into about 16 m long cry...
متن کاملCohomology of Cryo-Electron Microscopy
The goal of cryo-electron microscopy (EM) is to reconstruct the 3-dimensional structure of a molecule from a collection of its 2-dimensional projected images. In this paper, we show that the basic premise of cryo-EM—patching together 2-dimensional projections to reconstruct a 3-dimensional object—is naturally one of Čech cohomology with SO(2)-coefficients. We deduce that every cryoEM reconstruc...
متن کاملMathematics for cryo - electron microscopy
Single-particle cryo-electron microscopy (cryo-EM) has recently joined X-ray crystallography and NMR spectroscopy as a high-resolution structural method for biological macromolecules. Cryo-EM was selected by Nature Methods as Method of the Year 2015, large scale investments in cryo-EM facilities are being made all over the world, and the Nobel Prize in Chemistry 2017 was awarded to Jacques Dubo...
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ژورنال
عنوان ژورنال: Ophthalmologica
سال: 1968
ISSN: 1423-0267,0030-3755
DOI: 10.1159/000305335