the relations between the crystal structure and physicochemical properties

... decreases the Curie and N´eel temperatures [18] Although the co-substitution of Sm and Mn has been extensively studied over the years, there are some controversies regarding the crystal structure and ... as Sm and Mn incorporated into the crystal structure of BiFeO3 To further confirm the crystal symmetry of BSFMO samples, we refine the diffraction patterns by using the R3c model with the unit ... to shed some light on the magnetic properties of Sm and Mn co-substituted BiFeO3 , we investigate the crystal structure, phonon vibration, microstructure, and magnetic properties of Bi0.9 Sm0.1

Ngày tải lên: 17/08/2020, 20:37

... regions from the interior of the complex to the shell in the fibril formation Because the spheroid shape can compensate the repulsion between the core and the shell of the oligomer, as well as the binding ... determine the compactness of the Aβ42 tetrameric structure, we calculated RI? ?the ratio of the smallest component of the moment of inertia and the largest one for the structures in the equilibrated ... stretching the oligomer to keep the charges away from each other To better understand the role of the charge, we calculated the distribution of angles between the dipole moment and the principal

Ngày tải lên: 13/01/2020, 07:30

... Type-II* structures, respectively Note that the Type-I and Type-II* structures correspond to i = and 5, and structures corresponding to o i o are the transition structures between the Type-I and Type-II* ... going to the right side of the TS DELS = ETS À EAFM-LS (ETS is the total energy of the TS, and EAFM-LS is the total energy in the AFM-LS state of the model structure under consideration) and the saving ... exchange– couplings between these sites and the manganese ions at the B sites The effective exchange–coupling constants between the sp2-hybridized carbon sites and the manganese ions at the B This journal

Ngày tải lên: 16/12/2017, 17:21

... assumed on the EPR spectrum and the other spectral methods The crystal structure of the [Cu(2-Clnic)2(Bim)2] and [Cu(2-Clnic)2(FP)2] complexes have been determined by X-ray crystal structure analysis ... absorption bands in the region from 200 to 500 cm-1 These bands correspond to the antisymmetric and symmetric OH stretch and confirm the presence of water IR spectrum of the complex has sharp band at ... (601 → 648 cm-1) and BFP (596 → 648 cm-1)] show, that these ligands are coordinated through the nitrogen atom of the pyridine ring (NAKAMOTO, 1977) The positions of band to the skeletal vibrations

Ngày tải lên: 19/03/2023, 15:26

... Vietnam established a relationship based on the tributary system and how far these early ties had affected the political continuity of the Chinese Song and the Vietnamese Dinh, Le and Ly dynasties ... international relations The growth of Vietnam was closely linked to the rise and fall of the Chinese dynasties and the situation which prevailed in China For example, the decline of the Tang dynasty ... attributed to the persistence of the Vietnamese in their struggle for independence and the political disintegration of China’s Tang dynasty.1 Thus, this article examines the relationship between the two

Ngày tải lên: 13/10/2022, 09:13

... at the solvent-exposed surface of the tetramer and it connects the middle and the C-ter- minal domains (Fig. 2). In the crystal structure of pyruvamide-activated ScPDC, the cleft between these Table ... of the processes in ScPDC, namely, binding of the regulatory substrate(s) in the cleft between the R and PP domains. The bound activator may then enhance the rigidity of the enzyme molecule and ... changes within the subunits due to the binding of pyruvamide between the R and the PP domains. The dimer reorientation leads to the genera- tion of a closed and an open side in the tetramer. Con- sequently,

Ngày tải lên: 30/03/2014, 10:20

... than the structure of the a and/ or b subunits in the complex form reported. Discussion Structure of Pf b 2 and mutual activation Since the first report in 1988 [3], the crystal structures of the a 2 b 2 complex ... a SWISS PLOT ). The distances between the Ca atom of Lys82 and those of the above residues interacted with PLP were calculated and compared with the distance between the corresponding residues of Stb. They ... Arrows in Fig. 3A point to the first two strands and one helical structure (residue 58–64) that intrude into the C domain. The coenzyme PLP is located in the deep cleft between the two domains. PLP

Ngày tải lên: 30/03/2014, 14:20

... While the properties of this luminescence have been observed to depend on the size of the Si-ncs, difficulties arise in the understanding of these materials from the effects related to the Si-nc/dielectric ... fluorescence photons at the absorption edges probed. Information on the bulk of the film was provided by the TEY spectra at the Si K-edge and the FLY spectra at the Si L 3,2 -edge. Results and discussion ... the isochronal and isothermal studies and drafted the manuscript TR participated in all aspects of the isochronal study as well as the acquisition of XANES data in the isothermal

Ngày tải lên: 21/06/2014, 05:20

... Glaser and Havelock were not on the map for the previous dec- ade (1965 to 1974), they were among the most cited authors, appearing on the map when we permitted 50 authors. On the other side of the ... II, and with periods of heightened interest in the Western world in response to events such as the Cold War, the development of the Space Age, and the emergence of eco- nomic competition in the ... altogether on the other, signal important changes scientifically and intellectually – potentially serving to herald significant changes in the ongoing negotiations between science and society of their

Ngày tải lên: 11/08/2014, 05:21

... Glaser and Havelock were not on the map for the previous dec- ade (1965 to 1974), they were among the most cited authors, appearing on the map when we permitted 50 authors. On the other side of the ... II, and with periods of heightened interest in the Western world in response to events such as the Cold War, the development of the Space Age, and the emergence of eco- nomic competition in the ... altogether on the other, signal important changes scientifically and intellectually – potentially serving to herald significant changes in the ongoing negotiations between science and society of their

Ngày tải lên: 11/08/2014, 16:21

... layers and underlayer on the phase transformation of the FePt thin films was conducted. The relationships between the microstructure, the disordered/ ordered phase transformation, and magnetic properties ... continuous maze-like structure to an isolated island structure. The formation of the island structure may realize the decoupling between FePt particles and cause the change of magnetization reversal mechanism ... comparing to the FePt film without underlayer. The main contribution of the underlayer was to improve the crystallinity of the FePt films. As a result, the coercivities in both direction of the FePt

Ngày tải lên: 13/09/2015, 21:23

... [71], where, n is an integer, λ is the wavelength of incident wave, d is the spacing between the planes in the atomic lattice, and θ is the angle between the incident ray and the scattering planes. More details ... guidance on the understanding of structural and magnetic properties of CMS Heusler alloys and its further application into the field of spin-electronics. 1.6 Outline of thesis This thesis was ... of the bandgap According to the calculations by Galanakis et al. [34], the origin of the bandgap in Heusler alloys is caused by the d-d states hybridization of X and Y transition metals, as the

Ngày tải lên: 16/10/2015, 12:00

... 10 K and T = 100 K For another data set, the sample was prepared by dissolving the crystals The crystals were recovered from 40 crystallization wells (each 10 μl) and then washed with the crystallization ... to the aerobic purification and crystallization of the enzyme The additional metal site The C-terminus of the large subunit of the D vulgaris MF hydrogenase hosts a Mg atom The Structure of the ... ligand between the Ni and the Fe atoms in the active site of the A vinosum enzyme is shown to be a monoatomic oxygen species, most likely a hydroxy ligand The same ligand has been found for the

Ngày tải lên: 21/12/2016, 10:50

... reactions between a TPA/TPB derivative and 𝛼-bromo-poly(3-hexylthiophene) (Scheme 1) The synthesis and preliminary results on the characterization of the optical and thermal properties of the s-P3HTs ... polymers They have been paid much attention because of their compact structures and high segment densities These features affect the crystalline, mechanical and electrical properties and give ... P3HT, s-P3HT-TPA and s-P3HT-TPB Thermal properties of s-P3HT-TPA and s-P3HT-TPB The thermal properties of the star-shaped P3HTs were studied via DSC The DSC second-heating traces in the range from

Ngày tải lên: 17/12/2017, 15:33

... teaching the various theories of the term structure of interest rates, and the implications of each theory for the shape of the Treasure yield curve To evaluate the trainees' understanding of the ... maturities? ᅚ A) The segmentation theory ᅞ B) The pure expectations theory ᅞ C) The liquidity premium theory Explanation The market segmentation theory contends that lenders and borrowers have ... rates on the vertical axis and maturities on the horizontal axis A parallel shift of a yield curve means the spread between the interest rates or the "yield spreads" have not changed The other possible

Ngày tải lên: 14/06/2019, 16:21

... process) the temperature drops as the domains [1] absorb the thermal energy to perform their reorientation The randomization of the domains [2] occurs in a similar fashion to the randomization at the ... both the cooling capacity and the temperature difference between the cold and the hot ends of the refrigerator (generally a larger ∆Tad corresponds to a larger cooling capacity of the material and ... within the crystal lattice and are often out of step with each other where they meet The anti-phase domains grow as the alloy is annealed There are two types of APBs corresponding to the B2 and...

Ngày tải lên: 24/06/2016, 12:58

... is the angle between the projection of the tilt of the z axis on the xÂ, y plane (dened direction of tilt of z and the x axis), and j % a + c denes the location of the rhombic (x, y) axes The ... move away from the heme and the B-helix moves closer to the heme in the WT metHb than in the rWT metHbH2O crystal structure, with the result that the ligated water is lost in the latter complex ... (case I) or the WT metHb [17] (case II) crystal structures In order to utilize the information in ddip for distinguishing between the two crystal structures, the experimental shifts and crystal coordinates...

Ngày tải lên: 23/03/2014, 17:22

... equilibrium The top panel represents a standard mixture of GlcNAc oligomers showing the standard 60 : 40 ratio between the a-anomer and the b-anomer at equilibrium The other panels show the results ... of the ChiG and ChiC structures Despite the deletion of the B-loop, the two putative catalytic residues Glu68 and Glu77 are structurally well conserved between ChiG and the plant enzymes Andersen ... eight and seven residues respectively (Fig 1) The N-termini of the plant enzymes and the first residue in the ChiG structure (Phe12) (Fig 4A), are located on the opposite side of the enzyme to the...

Ngày tải lên: 07/03/2014, 11:20

... integrated and scaled using the programs Mosflm and SCALA in the CCP4 suite [47] with DPS [48] Structure determination and refinement The structure of the enzyme was determined and refined using the program ... performed, and the monitor and the packing values were checked to determine the result from the candidates We concluded that there is an (abc)2 dimer in an asymmetric unit of the cell The ˚ calculated ... staining, and only the upper one stained upon activity staining (data not shown) The Mr values for the upper and lower bands were 220 000 and 200 000, respectively These data suggest that the subunit...

Ngày tải lên: 21/02/2014, 03:20

... any other AdoMet-binding protein structure [14] An antiparallel b sheet (b1, b2, b5 and b8) forms the upper part of the structure along with strands b3 and b4, which form a b meander On the opposite ... suggested to be involved in the interaction between MS and FLD [18] We note that in the two regions of the protein where the major differences occur between the E coli and human structures, both contain ... activation on the structure, and their symmetry-related molecules to be able to accurately calculate Sc values Both the size of the contact surface, the Sc value and the fact both monomers in the asymmetric...

Ngày tải lên: 23/03/2014, 09:21