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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Study of substances transport in plants stalks
 Doubek, Vladimír ; Kubásek, Radek (referee) ; Mikulka, Jan (advisor)
This thesis deals procedure nuclear magnetic resonance and next three of basic measuring technics NMR. Magnetic resonance exploit, that anyone proton and neutron have dynamics moment. Is based on monitoring response coring situated to magnetic field B0 and on interaction with HF electromagnetical wave. Measuring of response signal differ in feed RF pulse. Method spin echo (SE) is based on two pulses 90° and 180° in contrast by Inverse recovery (IR), where is it conversely.By method Hahn echo (measuring efficient relaxation time T2*) is brought 90° pulse. For all methods is final signal over stopping process captured in receiving inductor.
Detailed record
Study of substances transport in plants stalks
 Doubek, Vladimír ; Kubásek, Radek (referee) ; Mikulka, Jan (advisor)
This thesis deals procedure nuclear magnetic resonance and next three of basic measuring technics NMR. Magnetic resonance exploit, that anyone proton and neutron have dynamics moment. Is based on monitoring response coring situated to magnetic field B0 and on interaction with HF electromagnetical wave. Measuring of response signal differ in feed RF pulse. Method spin echo (SE) is based on two pulses 90° and 180° in contrast by Inverse recovery (IR), where is it conversely.By method Hahn echo (measuring efficient relaxation time T2*) is brought 90° pulse. For all methods is final signal over stopping process captured in receiving inductor.
Detailed record
Určení rozdílů relaxačních časů T2 u PMMA gelových elektrolytů
 Vognar, J. ; Bartušek, Karel ; Novák, V. ; Vondrák, Jiří
T2 relaxation is complex phenomenon, but at its most fundamental level, it corresponds to a decoherence of the transverse nuclear spin magnetization.
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