Report No xxxx - Instytut Fizyki JÄdrowej PAN

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selected in GM in VHL and Ventral Horn Right (VHR), in WM in PFL and Posterior Funiculus Right (PFR) for diffusion gradient along X, Y directions. The average values of diffusion components in the Ventral Horn in GM are: D f =(1.11±0.17) 10 -3 mm 2 /s, A f =0.54±0.07 and D s=(0.14±0.03) 10 -3 mm 2 /s, As=0.46±0.07. For WM in the Posterior Funiculus the corresponding values are: D f =(1.35±0.55) 10 -3 mm 2 /s, A f =0.74±0.07 and D s =(0.08±0.02) 10 -3 mm 2 /s, A s=0.26±0.07. Our results are within the limits of human brain data [10] and full DTI data for the rat spinal cord at Th7 [11]. Conclusion: We have demonstrated the existence of non-monoexponential diffusion in the human CSC that can be approximated by fast and slow diffusion components. 1 b=450 s/mm 2 b=900 s/mm 2 b=5000 s/mm 2 Fig. 1. DW images from a slice through the center of C5 for different b values. <strong>No</strong>te increasing contrast between GM and WM at b=5000 s/mm 2 . Fig. 2. Dependence of signal amplitude on diffusion 0 1000 2000 3000 4000 5000 6000 700 A 0,1 GM-VHR WM-FCR weighting along X direction in CSC at C5 level in GM – VHR, in WM – FCR. Solid lines represent the biexponential fit. b [s/mm 2 ] References: 1) Clark, et al., MRM 41:1269-1273 (1999); 2) Alsop, MRM 38:527-533 (1997); 3) Le Roux et al., MAGMA 14:243-247 (2002); 4) Ries et al., MRM 44:884-892 (2000); 5) Bammer et al., JMRI 15:364-373 (2002); 6) Shimony et al., Proc. 8 ISMRM 773 (2000); 7) Wheeler-Kingshott et al., NeuroImage 16:93-102 (2002), 8) Jasinski et al., Proc. 11 ISMRM 2462 (2003), 9) Clark, et al., MRM 44:852-859 (2000), 10) Inglis et al., MRM 45:580-587 (2001), 11) Elshafiey et al., MRI 20:243-247 (2002). 0 8000 106
DEUTERIUM NMR IN RMn 2 D 2 (R = Y, Tb, Dy) Henryk Figiel 1) , Paweł Filipek 2) , Paweł Szczurek 1) , Andrzej Budziak 1,2) 1) Faculty of Physics and Nuclear Techniques, AGH University of Science and Technology Al. Mickiewicza 30, 30-059 Kraków, Poland; 2) H. Niewodniczański Nuclear Physics Institute, ul. Radzikowskiego 152, 31-342 Kraków, Poland The Laves phase type compounds of Manganese with Yttrium and rare earths (RMn 2) easily adsorb hydrogen or deuterium atoms. These light elements locate in the tetrahedral type A2B2 interstitial positions with 2 Mn and 2 RE (Y) NN atoms, cause noticeable lattice expansion and very significant increase of the magnetic ordering temperature T N . Above T N the spin fluctuations are strongly influenced by hydrogen (deuterium). Measurements of the 2 D spin-lattice relaxation time T 1 and the Knight shift in function temperature above T N gives valuable insight into magnetic interactions and their dynamics. The longitudinal (T 1 ) relaxation was measured using three-pulse stimulated echo technique for YMn 2 D 2 [1] and TbMn 2 D 2 [2], and by saturation recovery method for DyMn 2 D 2 . On approaching T N a characteristic critical type divergences of T 1 and of the resonant line shift δν are observed. For the YMn 2 D x deuterides the observed changes are caused by the spin fluctuations related with Mn magnetic moments only, because of no contribution of nonmagnetic Y atoms [1]. For the TbMn 2 D 2 deuteride the significant contribution to the T 1 relaxation rate from fluctuating Tb moments is visible [2], what causes faster relaxation with divergence similar to that in YMn 2 D 2 . In the DyMn 2 D 2 deuteride the T 1 relaxation is even faster than that for TbMn 2 D 2 but the divergence is of the same character. The observed enhancement of the relaxation for DyMn 2 D 2 deuteride reflects interaction with Dy of higher magnetic moment than Tb, whereas the same character of spin fluctuations due to Mn magnetic moments remains. The Knight shifts for the investigated deuterides are negative. For DyMn 2 D 2 deuteride the temperature shift of the resonant line δν is less pronouncing than for YMn 2 D 2 and TbMn 2 D 2 deuterides what well corresponds to the faster relaxation observed in DyMn 2 D 2 deuteride. The analysed behaviour of T 1 and the resonant line shift δν brought us to the conclusion that the exchange of the rare earth element in RMn 2 D 2 deuterides strongly influences dynamics of spin fluctuations as monitored by 2 D NMR method. References: 1. H. Figiel, A. Budziak, P. Mietniowski, M.T. Kelemen, E. Dormann, Phys. Rev. B, 63 (2001)104403 2. S. Leyer, G. Fischer, E. Dormann, A. Budziak, H. Figiel, J. Phys. Cond. Matt., 13 (2001)6115 107
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The Henryk Niewodniczański INSTITU
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Contents R. Banyś, A. Słowik, M.
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J. Kolmas, M. Uniczko, E. Kalinowsk
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Ł. Popenda, Z. Gdaniec, G. Dominia
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USEFULNESS OF PROTON MAGNETIC RESON
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INFLUENCE OF PARAMAGNETIC IONS ON F
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NMR RELAXATION OF PAPER SAMPLES Bar
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SPIN-LATTICE RELAXATION OF D 2 QUAN
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INVESTIGATION OF NEUROPROTECTING EF
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OPTICAL PUMPING OF 3 He Katarzyna C
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NMR STUDY OF GELATION PROCESS OF LO
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MRI INVESTIGATIONS OF HYDROGEL FORM
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CHEMICAL SHIFT TITRATION AT THE INT
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LOCAL DYNAMICS AND ORGANIZATION OF
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1 H NMR DETECTION OF σ-ADDUCTS IN
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HYDRATION OF WHEAT PHOTOSYNTHETIC M
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References: 1. H. Harańczyk On wat
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(EDV) and end-systolic (ESV) volume
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THE MOST STABLE POLYMORPHIC FORM OF
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A DETERMINATION OF ABSOLUTE SHIELDI
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DIAGNOTIC VALUE OF MRI IN CONVERSIO
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NMR AND FTIR STUDY OF MOLECULAR DYN
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EFFECTS OF INTERMOLECULAR INTERACTI
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600000 Integral of 1D MRI profils [
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simultaneous analyse of the tempera
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1 H NMR STUDIES OF PLATINUM(II) CHL
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35 Cl-NQR STUDY OF ELECTRONIC STRUC
Page 55 and 56: 35 Cl- NQR AND 1 H-NMR STUDY OF MOL
Page 57 and 58: THE SYNTHESIS AND NMR ANALYSIS OF T
Page 59 and 60: STUDY OF MOTIONAL PROCESSES OF DRAW
Page 61 and 62: intensity (arb. units) 0,20 0,15 0,
Page 63 and 64: data for Cβ-nonplanar model 3 are
Page 65 and 66: T 1 DISPERSION AND SELF-DIFFUSION N
Page 67 and 68: A LOW FIELD MRI SYSTEM FOR HYPERPOL
Page 69 and 70: 1 H MAS NMR OF FLAVONOIDS Katarzyna
Page 71 and 72: EFFECT OF TEMPERATURE ON LIPOSOME S
Page 73 and 74: 1 H, 13 C NMR AND GIAO/DFT CALCULAT
Page 75 and 76: NMR STUDY OF THE HUMIC ACIDS EXTRAC
Page 77 and 78: NMR STUDY OF LAYERED ANGANITE La 1.
Page 79 and 80: MAGNETIC SUSCEPTIBILITY EVALUATION
Page 81 and 82: A NOVEL SOURCE OF MAGNETIC FIELD FO
Page 83 and 84: DETERMINATION OF AMINO ACIDS IN BOD
Page 85 and 86: MOLECULAR DYNAMICS OF TERT-BUTYL CH
Page 87 and 88: MR MICROSCOPY IN COMPARISON OF YOUN
Page 89 and 90: NH CH CH 2 NH CH CO COONa n CH 2 m
Page 91 and 92: 35 Cl-NQR STUDY OF MOLECULAR DYNAMI
Page 93 and 94: 35 Cl-NQR STUDY OF THE SUBSTITUENT
Page 95 and 96: 13 C AND 1 H NUCLEAR MAGNETIC SHIEL
Page 97 and 98: 13 C CPMAS NMR OF ANTHOCYANINS AND
Page 99 and 100: INVESTIGATION OF TRANSESTERIFICATIO
Page 101 and 102: T 2 RELAXATION MAP OF ARTICULAR CAR
Page 103 and 104: MICROTOMOGRAPHY STUDIES OF TABLETS
Page 105: MAPPING OF THE BI-EXPONENTIAL DIFFU
Page 109 and 110: The neutron scattering (IINS, QNS,
Page 111 and 112: STRUCTURE OF 4-QUINOLINONES ANALYSE
Page 113: NMR MULTIPOLE RELAXATION IN THE ROT
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