14 research outputs found

    «Раннiй» Олександр Тищинський: сторiнки життя i творчостi

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    Пропонована розвiдка має на метi вирiшення локальнiшого завдання - висвiтлення раннiх сторiнок бiографiї i творчостi Тищинського зi спецiальним зосередженням на його спiвпрацi з українськими перiодичними виданнями

    Generating highly polarized nuclear spins in solution using dynamic nuclear polarization

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    A method to generate strongly polarized nuclear spins in solution has been developed, using Dynamic Nuclear Polarization (DNP) at a temperature of 1.2 K, and at a field of 3.354 T, corresponding to an electron spin resonance frequency of 94 GHz. Trityl radicals are used to directly polarize C-13 and other low-gamma nuclei. Subsequent to the DNP process, the solid sample is dissolved rapidly with a warm solvent to create a solution of molecules with highly polarized nuclear spins. Two main applications are proposed: high-resolution liquid state NMR with enhanced sensitivity, and the use of the hyper-polarized solution as an MR imaging agent. (C) 2003 Elsevier B.V. All rights reserved
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