MAS-NMR Relaxation Methods for Characterising
HR-MAS NMR based quantitative metabolomics in breast cancer
... Abstract: High resolution magic-angle spinning (HR-MAS) nuclear magnetic resonance (NMR) spectroscopy is increasingly used for profiling of breast cancer tissue, delivering quantitative information for ...
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THE ELUCIDATION OF CELLULOSE SUPRAMOLECULAR STRUCTURE BY 13 C CP-MAS NMR
... The actual mechanism and reason for the observed line narrowing and relative crystalline signal enhancement remain, however, largely unknown. Park et al. suggest, that amorphous components become more ordered upon ...
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Investigations of CO2-water wettability of coal : NMR relaxation method
... qualitative methods were used to evaluate the wettability of rock, 49 including the contact angle measurement (Johnson and Dettre, 1969), the Amott method (Amott, 50 1959), the USBM wettability index (Donaldson et ...
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Recent technique developments and applications of solid state NMR in characterising inorganic materials
... the NMR interaction parameters, extension to amorphous materials is being ...DFT methods rely on the spatial periodicity of the ...the NMR parameters and gave really good agreement to the ...
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1H CSA parameters by ultrafast MAS NMR: measurement and applications to structure refinement
... H NMR, crystal structure prediction methods [23] and DFT ...ultrafast MAS 1 H anisotropic-isotropic shift correlation experiment can be used to measure 1 H shift parameters for relatively complex ...
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Photo-CIDNP in the reaction center of the diatom Cyclotella meneghiniana observed by 13C MAS NMR
... Photo-CIDNP MAS NMR, Diatoms, Cyclotella meneghiniana 1 Introduction The solid-state photo-CIDNP effect is a spin-chemical effect in which transiently nuclear spin order far from Boltz- mann equilibrium ...
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Measuring 19F shift anisotropies and 1H–19F dipolar interactions with ultrafast MAS NMR
... H NMR relaxation studies on crystals of the α form of PVDF McGarvey and Schlick 20 determined that the correlation time for motions about the polymer backbone is much shorter that for rotation about the ...
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Study on Multi Exponential Inversion Method for NMR Relaxation Signals with Tikhonov Segularization
... pre-assigned relaxation time constants, SNR of the measured ...and relaxation inversion spectrums are the output of the ...the methods, we collected three groups of spin-echo signals produced by ...
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Requirements on Paramagnetic Relaxation Enhancement Data for Membrane Protein Structure Determination by NMR
... A known drawback of structure calculation using PRE restraints with large error bounds of ±4 A˚ is the occurrence of structures with different relative orientation of the secondary structure elements, i.e., the ...
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Characterising molecular self assembly using high resolution 1H solid state NMR spectroscopy
... H MAS NMR is uniquely placed to elucidate hydrogen bonding arrangements in these systems, given the sensitivity of the 1 H chemical shift to its local atomic ...so-called NMR crystallographic ...
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Rapid Characterization of Formulated Pharmaceuticals Using Fast MAS 1H Solid-State NMR Spectroscopy
... such methods may not be applicable or useful for all APIs, as was observed for pheny and ...H NMR signals and/or has a poorly resolved 1 H NMR spectrum, both SSPs and SE pulses will be inefficient ...
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Response of Degarelix treatment in human prostate cancer monitored by HR-MAS $^{1}$H NMR spectroscopy
... H NMR data from the prostate are sometimes expressed as metabolite ratios with respect to citrate (Kobus et ...H NMR of human prostate tissues samples data using the peak assignment and quan- tification ...
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H-MAS NMR
... Figure 9. Solid-state 1 H-MAS NMR spectrum of pellets (after cross-linking) acquired with a MAS-rate of 20 kHz and a repetition time of 10s. The spectrum size was 32K and was zero filled to 256 K ...
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8.1 Relaxation in NMR Spectroscopy
... 0.8 0.8 0.8 1.6 3.1 Effect of Segmental motion Oxygen is paramagnetic and is capable of causing proton and carbon relaxation by a dipolar interaction with the unpaired spins on O 2 . The effect is not large, but ...
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Measuring proton shift tensors with ultrafast MAS NMR
... that in the case of OH protons, resolution of different sites cannot be improved by magnetization transfer to a directly bonded heteronucleus as in Ref. [19]. The pulse sequence used to record 1 H anisotropic-isotropic ...
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HR MAS NMR spektroskopi: En hel ny verden for fødevareforskningen
... HR MAS NMR-forsøg på rugmel under forarbejdning til ...HR MAS NMR-spektre kørt ved samme rotationsfrekvens (5000 Hz) af rugmel, dej før og efter hævning samt af det færdige ...menlignelige ...
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Relaxation methods in compressible flow
... This work is protected against unauthorized copying under Title 17, United States C o d e M icroform Edition © ProQuest LLO. ProQuest LLO[r] ...
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Multigrid Methods for Mesh Relaxation
... 2: Relaxation Scaling Study on Circular ...1000 relaxation iterations are having less and less effect and the mesh looks very similar to the initial ...Gauss-Seidel relaxation cannot damp the smooth ...
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Structure refinement of photosynthetic components with multidimensional MAS NMR dipolar correlation spectroscopy
... solid-state NMR represents another chemical shift restraint that can guide the construction of a 3-D model for the structure, following the dashed arrow in ...the NMR. In addition, the relative intensities ...
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Examine of Dielectric Relaxation Times by Microwave Absorption and Correlation with NMR Spin Lattice Relaxation Times for Mixtures of Alcohols
... The slope of line drawn between X and Y was used to resolve the value of dy/dx and then can obtain relaxation time τ (see eqn. 4). NMR SLRT (T 1 ) results of the mixtures are established from NMR ...
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