kidney ureter and bladder x ray study
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 1
... carbide XRD : x- ray diffraction HR-XRD : High-resolution synchrotron x- ray diffraction RSM : Reciprocal space mapping PLM : Polarized light microscope xx FWHM : Full-width-at-half-maximum ε’ ... et al.) S: x = ([001]-poled) S: x = ([001]- and [111]-poled) S: x = 5, (unpoled) S: x =4.5, ([001]-poled) S: x = 4.5, ([001]-poled) S: x =8, 10 ([100]-,[011]-, and [111]-poled) P: 10 x 15 prepared ... PZN-PT PZN -x% PT: single crystal (S) or powder (P) P: 5
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 2
... surface X- ray 44.65o ~43.0-44.0o 42 43 44 45 46 47 2θ [010]W [100] L PZN-4.5%PT b) b) Fractured surface Intensity (arb units) X- ray X- ray 44.62 42 43 44 45 o 46 47 2θ Figure 5.1 (002) XRD profiles ... µm, 59 µm, and 412 µm of a PZN sample [57] This suggests a nonlinear relation between the x- ray energy and the penetration depth despite similar test samples were used Whether the x- ray diffraction ... their lattice parameters, all contribute to the extreme broadness of the lower 2θ peak in the x- ray profile 61 Subsequent XRD (Figure 5.4) and HR-XRD (Figure 5.5) measurements were also performed...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 3
... HR-XRD (002) RSMs were also performed on polished -and- annealed (at 257 °C for h) PZN-7%PT, PZN-8%PT, and PZN-9%PT single crystals The results are provided in Figures 5.11(a), (c), and (e) To expose ... same samples were later fractured into two halves and were again x- rayed The results are shown in Figures 5.11(b), (d), and (f) The polished -and- annealed bulk PZN-PT single crystals were found ... in the x- ray diffraction patterns (Figures 5.11a, c, and e) As a result, the polished surface can hardly reveal any useful structural information of the crystals hence unsuitable for x- ray diffraction...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 4
... in the x- ray profile following any direction of polishing, suggesting that the surface phase is always present regardless of the direction and/ or mode of polishing This behavior can be explained ... annealing treatments The heating and cooling rates used were 1.5 ºC/min Figure 5.9 shows the (002) XRD profiles of the differently annealed PZN-4.5%PT samples and the (002) XRD profile of the as-polished ... 5.7a), was tilted by an angle of 45° and again polished back and forth in the new direction After the second polishing, the earlier set of domains disappeared and was replaced by a new set of elongated...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 5
... parameters am and cm are equal Because reciprocal lattice points in HR-XRD RSM are projected with respect to the pc axes, it is important to establish the relationship between the pc axes and the axes ... MC (d1, d3, d7, d4, and d6, d7 being the bm diffraction) + T (d2 and d5), (b) T (d2 and d5) + T* (d1, d3, d4 and d6) + R (d7), or (c) T (d2 and d5) + T* (d1, d3, d4, d6, and d7, d7 being the ... between the m and pc axes for various M phases and the O phase in the unpoled state Type of Monoclinic (mirror) Relationship between Characteristics of monoclinic plane and monoclinic and pseudocubic...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 6
... of coexistence of the {100}-type and {110}-type R nanotwins onto the (002) RSM (b) The projection of the coexistence of R micro- and nanotwins onto (002) RSM 112 coexistence of R micro- and nanotwin ... scattered areas started to exhibit extinction at most P/A angles, suggesting the occurrence of the C phase (Figure 7.9d) Above Tmax, the sample exhibited a total extinction indicating the presence ... occurrence of a new M phase Table 6.1 gives the relationships between the m axes and the pc axes of the various M phases and the O phase Judging from the nature of splitting, these diffraction peaks...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 7
... the cooling and transformation stresses to be relaxed via twinning of both the untransformed T and the transformed R phases Thus, at room condition, the mixture of R and T micro- and/ or nanotwins ... the x- ray radiation used (of 8.048 keV in energy and with an estimated penetration depth of only a few µm thick), the underlying (001)T domains could not be detected by the x- ray This would explain ... (R+T) phase mixture 8.3 Nature of rhomboedral and tetragonal micro-/nanotwin mixture in PZN(7-8)%PT at room temperature In the previous section, it has been shown that the (R+T) mixture exist in PZN-(7-8)%PT...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 8
... temperature to 115 °C, six peaks were diffracted (Figure 8.13e) Of the six peaks, d1, d2, and d3 lie at 2θ ≈ 44.80° and d4, d5, and d6 lie at 2θ ≈ 44.48° Note that peaks d1 and d3 at this temperature ... 8.13e) may be assigned as (a) MB (d1, d3, d4, and d6) + T (d2 and d5), (b) MC (d1, d2, d3, d4, and d6) + T (d2 and d5) or T* (d1, d3, d4, and d6) + T (d2 and d5) (see Section 6.2.3 for details) The ... to Tmax ≅ 165 ºC, the scattered areas started to exhibit extinction at most P/A angles, suggesting the occurrence of the C phase (Figure 8.14f) Above Tmax, the sample exhibited a total extinction...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 9
... the entire MPB (standard + extended) region where (R+T) coexist, the crystal exhibits extremely high piezoelectric properties This suggests that the presence of (R+T) phase mixture in the form ... PT contents (i.e., 0.045 ≤ x ≤ 0.07), the R phase has a mixed micro- and nanotwin structure of both {100}-type and {110}-type In contrast, at high PT content (i.e., x ≈ 0.08), the R phase is made ... diffraction is of considerably smaller FWHM and lies in the ω = 0°, or (c) the convoluted peak of both {100}-type and {110}-type R micro- and nanotwin mixture if the diffraction is a very broad...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 10
... current and HR-XRD results suggest TR-T ≅ 100-135 °C for [001]-annealed -and- poled PZN-4.5%PT and 95-115 °C for [001]-annealed-andpoled PZN-7%PT single crystals 175 Table 9.2 TDP, TR-T(L), and TR-T(U) ... transformation in relaxor single crystals occurs over a temperature range, manifested by the coexistence of R* and T* domains, a string of thermal current signals, and continued degradation of KT and k31 The ... the x- axis Both the KT and k31 of PZN-4.5%PT started to degrade after it was heated to 105 ºC 174 domains are parallel to the E-field direction which is normal to the fractured surface being x- rayed...
Ngày tải lên: 14/09/2015, 08:40
High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 11
... of the ferroelectric relaxor (1 -x) Pb(Mg1/3Nb2/3)O3-xPbTiO3, Phys Rev B, 66, p 054104 2002 36 Bai, F., N Wang, J Li, D Viehland, P M Gehring, G Xu and G Shirane X- ray and neutron diffraction investigations ... Bellaiche, L., A Garcia and D Vanderbilt Electric-field induced polarization paths in Pb(Zr1-xTix)O3 alloys, Phys Rev B, 64, p 060103 2001 25 Vanderbilt, D and M H Cohen Monoclinic and triclinic phases ... to an expanded MPB across 0.06 ≤ x ≤ 0.10 in PZN-xPT single crystals This expanded (R+T) MPB region can be further divided into two different regions In the low PT region (i.e., 0.06 ≤ x ≤ ≈ 0.08),...
Ngày tải lên: 14/09/2015, 08:40
X ray crystallographic study of yeast dcp1 and dcp2 proteins insights into the mechanism and regulation of eukaryotic mRNA decapping
... bacteria, archaea and eukaryotes The Nudix hydrolases are characterized by a consensus 23-residue sequence of GX5EX7REUXEEXGU termed the Nudix motif (U is a bulky residue and X is any residue), ... the exosome and Ski complex (Mitchell and Tollervey, 2000) In Drosophila, endonucleolytic cleavage has been reported and resulting fragments are degraded by the exosome from the 3’ end and Xrn1 ... cerevisiae 5’ decay complex Budding yeast 5’ decay complex are composed of 5’-3’ exonuclease Xrn1p, decapping enzyme Dcp2p/Dcp1p, DEADbox helicase Dhh1p, Lsm1-7, Edc3p and other auxiliary RNA-binding...
Ngày tải lên: 14/09/2015, 12:28
Báo cáo y học: "Application of Small Angle X-ray Scattering (SAXS) for Differentiation between Normal and Cancerous Breast Tissue"
... lobular carcinoma and in-situ ductal carcinoma studied in this work is referred to as glandular tissue Therefore, it is expected different peak positions will exist for carcinoma and fibrocystic ... CRM, Hufton AP and Dance DR Breast cancer diagnosis using scattered X- rays J Synchrotron Rad 2000; 7: 348-352 Malden CH, Speller RD, et al A CdZnTe array for the detection of explosives in baggage ... levels of lipid fat cells that exist in adipose tissue Figure shows that in this study peak positions can be used to identify tissues and their positions in this study are similar to the results...
Ngày tải lên: 02/11/2012, 11:08
Tài liệu Characterization of the Polymorphic Behavior of an Organic Compound Using a Dynamic Thermal and X-ray Powder Diffraction Technique pptx
... scanning calorimetry (DSC); X- ray powder diffraction (XRPD); combined, simultaneous, and dynamic differential scanning calorimetry /X- ray powder diffraction (DSC/XRPD); and high performance liquid ... acitretin,8 the study of a stable polymorph of paclitaxel,9 and the study of three polymorphs of sibenadet hydrochloride.10 DSC and XRPD have typically been used as separate techniques to study the ... of Mixtures of Polymorphs and Potential New Solids Forms By using the combined and dynamic DSC/ XRPD, several mixtures of disodium salt samples were identified, and the components of these mixtures...
Ngày tải lên: 14/02/2014, 03:20
Tài liệu Báo cáo khoa học: X-ray crystallographic and NMR studies of pantothenate synthetase provide insights into the mechanism of homotropic inhibition by pantoate docx
... backbone and side chain 13Ca and 13C¢ and 13Cb carbons are assigned to the extent of 97%, 93% and 93%, respectively (BMRB accession number 6940) [24] The H–15N correlation in the TROSY experiment ... density maps and facilitate further rebuilding and improvement of the molecular model, until no unexplained electron density remained, and the Rcryst and Rfree values converged at 18.9% and 24.4%, ... Protein–ligand and water-mediated protein–ligand hydrogen bond interactions (broken lines) that stablize the pantoate molecules in site I and site II of nPS Oxygen atoms of pantoate and water...
Ngày tải lên: 16/02/2014, 09:20
Tài liệu Báo cáo khoa học: Destabilization of psychrotrophic RNase HI in a localized fashion as revealed by mutational and X-ray crystallographic analyses pdf
... residues 29, T34 and E131 are shown The hydrogen bonds between N29 and Oc and T34 and Oc, and between N29 and Nd and E131 and Oe2, in the wild-type protein are shown as green broken lines, and the ion ... the protein, and a and b represent the a helix and b strand, respectively The side-chains of the mutated and parent amino acid residues at the six mutation sites are shown D39 ⁄ G39 and M76 ⁄ V76 ... 6·-RNase HI and wild-type proteins (full line) and between molecules C and D (broken line) a Helices and b strands are indicated by bars helices, and around Gly128 in a loop between the aV helix and...
Ngày tải lên: 18/02/2014, 13:20
Tài liệu Báo cáo khoa học: Molecular determinants of ligand specificity in family 11 carbohydrate binding modules – an NMR, X-ray crystallography and computational chemistry approach doc
... when the complex is formed The ligands cellobiose, cellotetraose and cellohexaose were studied Results and Discussion The crystal structure of CtCBM11, the binding cleft and its ligand specificity ... in the X- ray structures of CBM4 and CBM17 complexed with cellopentaose and cellohexaose, respectively [13,23] The involvement of the tyrosine residues in the stabilization of the complex cannot ... two six-stranded anti-parallel b-sheets that form a convex side (b-strands 1, 3, 4, 6, and 12) and a concave side (b-strands 2, 5, 7, 8, 10 and 11) The concave side is decorated by the side chains...
Ngày tải lên: 18/02/2014, 17:20
Tài liệu Báo cáo Y học: The solution structure and activation of visual arrestin studied by small-angle X-ray scattering pot
... a model and the experimental data: N X IðSj Þ À Iexp ðSj Þ 2 v2 ¼ ð8Þ N À j¼1 rðSj Þ where for each momentum transfer value, Sj, I(Sj) is the theoretical scattering, Iexp(Sj) is the experimentally ... solution X- ray scattering These pieces were modelled into the AA and BD dimers as extended polypeptide [26], and produced an improvement in the fit of the AA model at S values between 0.15 and 0.2 ... Kd and k were varied to fit the experimental data ð5Þ ð6Þ nm)1 With a 3-m sample–detector distance, useful data began at an S value of 0.04 nm)1 and the linear Guinier region extended to approximately...
Ngày tải lên: 22/02/2014, 07:20
Báo cáo khoa học: Determination of thioxylo-oligosaccharide binding to family 11 xylanases using electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry and X-ray crystallography pot
... decreased in the series b-d-xylohexaose (Xyl6) > b-d-xylopentaose (Xyl5) > b-d-xylotetraose (Xyl4) > b-d-xylotriose (Xyl3), with no detectable afnity for b-d-xylobiose (Xyl2), which is consistent ... (Da)a TRX I (none) None S-Xyl2-Me S-Xyl3-Me S-Xyl4-Me S-Xyl5-Me None S-Xyl2-Me S-Xyl3-Me S-Xyl4-Me S-Xyl5-Me None S-Xyl2-Me S-Xyl3-Me S-Xyl4-Me S-Xyl5-Me 19046.920 n.b 19508.080 19656.081 19804.091 ... FEBS J Janis et al ă Thioxylo-oligosaccharide binding to xylanases Fig MS titration curves for TRX I (5 lM), TRX II (10 lM) and CTX (10 lM) with S-Xyl5-Me, S-Xyl4-Me and S-Xyl3-Me (initial concentrations...
Ngày tải lên: 07/03/2014, 17:20
Báo cáo khoa học: The effect of replacing the axial methionine ligand with a lysine residue in cytochrome c-550 from Paracoccus versutus assessed by X-ray crystallography and unfolding ppt
... structure and unfolding upon replacing the axial Met ligand with a Lys in the M100K variant of cyt c-550 from P versutus We describe three X- ray structures, one of the ferric wild type (wt) and two ... substituents are extremely sensitive to the chemical nature of the axial ligands to the hemeiron [41] Upon replacing the native Met ligand with either an exogenous or protein-based ligand a change ... ascertained in this study by NMR Experimental procedures Expression and purification of P versutus cyt c-550 and the M100K variant Wild-type cyt c-550 was heterologously expressed in P denitrificans...
Ngày tải lên: 07/03/2014, 17:20