... and hyp-oxantine, guanosine and guanine, uridine and uracil, cyti-dine and cytosine were 12.2 and 6.2 min, 10.5 and 4.7 min, 15.2 and 6.1 min, 6.8 and 4.2 min and 6.6 and 3.9 min respectively The ... Sulfolobus solfataricus – biochemicalcharacterization and homology modeling Marina Porcelli1,2, Luigi Concilio1, Iolanda Peluso1, Anna Marabotti3, Angelo Facchiano3and Giovanna Cacciapuoti1 1 Dipartimento ... conserved in the NH family (Fig 1), and are almost perfectly superimposed on the structures of SsCU-NH and of the templates (Fig 5B) Residues D13, N37, N156, E162 and N164, and again D238, are able to...
Ngày tải lên: 18/02/2014, 17:20
... better and has some other unusual catalytic properties In order to understand these features, we per-formed isolation, biochemical and enzymological characterization, molecu-lar cloning and molecumolecu-lar ... unique features; and (d) to correlate catalytic behav-iour of the enzyme with the specific features of its three-dimensional structure and evolution Results Production, purification and characterization ... 5 and 9, respectively) Another protein band with a molecular weight of approximately 15 kDa that was co-purified with the enzyme could be found in heavily overloaded samples (Fig 1C, lane 10) and...
Ngày tải lên: 14/03/2014, 23:20
Báo cáo khoa học: Characterization and structural modeling of a new type of thermostable esterase from Thermotoga maritima ppt
... schematic structural model consists of six a-helixes and has one central b-sheet made up of six b-strand-strands (Fig 3A) The first and second b-strand of the a⁄ b-hydrolase fold have not been modeled ... function of EstD and to support COG1073 with experimental evidence, estD was cloned and expressed in Escherichia coli The recombinant enzyme was characterized, including structural modeling and experimental ... and geometry was analyzed by procheck analysis [21] The Ramachandran plot (not shown) indicated that most (92%) of the residues are in the core and allowed regions Bond lengths, bond angles and...
Ngày tải lên: 23/03/2014, 09:20
functional characterization and structural modeling of synthetic polyester degrading hydrolases from thermomonospora curvata
... constant, and [E], the enzyme concentration Homology modeling and molecular docking Homology modeling of T curvata polyester hydrolases was carried out using the Phyre2 web server (Kelley and Sternberg ... 1B) Tcur1278 and Tcur0390 showed an optimal temperature at 60°C and 55°C, respectively Thermal stability of Tcur1278 and Tcur0390 The stability of Tcur1278 and Tcur0390 at 50°C, 55°C and 60°C was ... dynamics simulations RW and TO analyzed the experimental and simulation data and prepared the manuscript WZ conceived the study and contributed to manuscript writing All authors read and approved the...
Ngày tải lên: 02/11/2022, 10:43
characterization and physical modeling of mos capacitors in epitaxial graphene monolayers and bilayers on 6h sic
... Trang 2Characterization and physical modeling of MOS capacitorsin epitaxial graphene monolayers and bilayers on 6H-SiC M Winters,1, aE Ö Sveinbjörnsson,2,3C Melios,4,5O Kazakova,4 W Strupiński,6and ... surface potential fluctuations and material non-uniformity are addressed in the context of SEM and KPFM imaging Energy gap modeling in bilayers then described, and a band diagram for the graphene ... min-imal band bending in the SiC bulk Thus, ϵf passes through the midgap such that the band offset between the conduction band in the SiC and the ϵf in the graphene is ϵSiC g /2 The band gap in...
Ngày tải lên: 24/11/2022, 17:38
Granular platform reinforced by geosynthetics above cavities laboratory experiments and numerical modeling of load transfer mechanisms
... methods of opening: a trapdoor and a progressive opening Two geosynthetic materials were tested: a woven and a nonwoven, and three granular soils: fine sand, coarse sand, and gravel were tested as ... BETWEEN THE FINAL LOAD ACTING ON GEOSYNTHETIC (FINE SAND AND PROGRAM 2) 147 FIGURE 4.33 COMPARISON OF THE LOAD DISTRIBUTION OBTAINED BY THE NUMERICAL MODELS BETWEEN PROGRAM 1 AND PROGRAM 2 148 ... SAND OVER GSY AFTER CAVITY OPENING 140 FIGURE 4.25 COMPARISON OF THE LOAD TRANSFER EFFICIENCY BETWEEN EXPERIMENTAL, DEM AND FEM RESULTS, CASES OF FINE SAND TESTS 142 FIGURE 4.26 NUMERICAL LOAD...
Ngày tải lên: 25/01/2021, 23:13
Field load experiments and computer modeling of a steel truss bridge for assessment
... from the on-site static and dynamic loading tests, evaluating dynamic load factors, and finally rating the load-carrying capacity of the bridge using finite element analysis and manual on bridge ... stiffness and the self-weight due to changes in structural arrangement configuration and cross-sectional areas 2.3 Field loading tests and monitoring 2.3.1 Background and purpose Full-scale field loading ... requirements of economic growth or high transportation demand of human, higher truck loads have required that the case study bridge sustain loads in excess of those intended during its original design...
Ngày tải lên: 27/01/2021, 09:02
Granular platform reinforced by geosynthetics above cavities laboratory experiments and numerical modeling of load transfer mechanisms
... methods of opening: a trapdoor and a progressive opening Two geosynthetic materials were tested: a woven and a nonwoven, and three granular soils: fine sand, coarse sand, and gravel were tested as ... BETWEEN THE FINAL LOAD ACTING ON GEOSYNTHETIC (FINE SAND AND PROGRAM 2) 147 FIGURE 4.33 COMPARISON OF THE LOAD DISTRIBUTION OBTAINED BY THE NUMERICAL MODELS BETWEEN PROGRAM 1 AND PROGRAM 2 148 ... SAND OVER GSY AFTER CAVITY OPENING 140 FIGURE 4.25 COMPARISON OF THE LOAD TRANSFER EFFICIENCY BETWEEN EXPERIMENTAL, DEM AND FEM RESULTS, CASES OF FINE SAND TESTS 142 FIGURE 4.26 NUMERICAL LOAD...
Ngày tải lên: 28/02/2021, 21:34
Ferroelectrics Characterization and Modeling Part 1 pdf
... Trang 1 FERROELECTRICS - CHARACTERIZATION AND MODELING Edited by Mickặl Lallart Trang 2Ferroelectrics - Characterization and Modeling Edited by Mickặl Lallart Published by ... behavior under high-pressure and local structure at atomic level will be helpful for better understanding this problem Trang 16Ferroelectrics - Characterization and Modeling of ultrahigh-performance ... Bichurin and Shashank Priya Chapter 5 Impact of Defect Structure on ’Bulk’ and Nano-Scale Ferroelectrics 79 Emre Erdem and Rüdiger-A Eichel Chapter 6 Microstructural Defects in Ferroelectrics and...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 2 docx
... Nondestructive imaging and characterization of ferroelectric domains in peridodically poled crystals J Appl Phys 83, 5973 Eng LM (1999) Nanoscale domain engineering and characterization of ferroelectric ... Idem for transmission image in (c) and (d) The next step consists of deducing a relation between the measured optical contrast and the refractive index On the one hand, close to the domain wall the ... ferroelectricity (Matthias, 1949), due to its outstanding electro-optical, non-linear optical and photorefractive properties (Duan et al., 2001; King-Smith & Vanderbilt, 1994 ; Postnikov et al., 1993;...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 3 docx
... 3 Results and discussion 3.1 Structural characterization Figure 1 (a) shows the X-ray diffraction patterns of calcined BTO and CFO powders No other phase in addition to perovskite and spinel ... interfacial region between the BTO-rich islands and the CFO-rich matrix A clear boundary between the strained BTO–CFO (i.e., matrix) and BTO-rich (i.e., multi-grain islands) phases is distinguishable, ... polarization and strain as a function of electric field 3.3 Ferromagnetic and magnetoelectric characterization Figure 9 shows the magnetic properties for sintered BT – 30 CFO, BT – 35CFO and BTO...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 4 ppt
... considered for dynamic and nonvolatile random access memories, Pb(Zr,Ti)O3 is high piezoelectric constant material being used for actuators and transducers, and LaMnO3 and (La,Sr)CoO3 are being ... defects and their evolution [2] Defects will change optical, mechanical, electrical and electromechanical behaviors of ferroelectrics [3, 4] However current understanding is limited to bulk and thin ... transition and abnormal electromechanical behaviors [9] Equation (3) can be rewritten as [10]: Trang 6where the coefficients, α 1 , α 2 , and α 3 can be identified from equation (4) and s and Q are...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 5 docx
... also fabricated by CSD method and is used as bottom electrode Both STO and LNO are perovskite structure and smaller crystal constant than BFO Therefore, the substrate and the LNO layer can induce ... polarization, and strain through the converse piezoelectric effect However, ceramic materials are multicrystalline structures made up of large numbers of randomly orientated crystal grains The random ... exponents and percolation points agree reasonably with the theoretically predicted values The frequency- and temperature-dependent dielectric response of all developed systems is also presented and...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 6 pptx
... observe M⊥≈ 70 and 2.5 kA/m vs M║ ≈ 50 and 1.8 kA/m at μ0H = 5 and 0.1 T, respectively (Fig 19a and b) 1 2 Fig 19 Magnetization M of CuCr0.5In0.5P2S6 measured parallel (red circles) and perpen-dicularly ... 1.00102030 Fig 16 Néel and Curie temperatures, TN and Θ, vs In3+ concentration x, derived from Fig 15 (M) and Fig 17 (1/M), and fitted by parabolic and logistic decay curves (solid lines), respectively ... components, g⊥ and g║, while the susceptibilities follow g⊥2 and g║2, respectively However, since g⊥ = 1.991 and g║ = 1.988 (Colombet et al., 1982) the single-ion anisotropies of both M and χ are...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 7 pdf
... properties remain unknown Therefore, accurate and reliable measuring of dielectric constant and loss factor of bulk and thin film ferroelectrics and related materials remains an actual problem ... have parameters ε′ and ε″ Real and imaginary parts of scattering parameters are separated numerically and treated as an independent, i.e the fitting is applied to both real and imaginary parts ... constant and ferroelectric-to-paraelectric phase transition in copolymers of vinylidene fluoride and trifluoroethylene, J Appl Phys., Vol 62, pp 3339 – 3342 Jönsson, P.E (2004) Superparamagnetism and...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 8 doc
... - Characterization and Modeling and 307 cm-1 bands in BaTi1-yCayO3 Fig.9 shows the bands 299, 520 and 723 cm -1 were independent of the formation of CaBa and CaTi in Bi-BCT and ... 520 and 723 cm-1 bands, and Ti-O... bands, and Ti-O bonds to the formation of the 262 and 299 cm-1 bands We also find the development of a weak new Raman band at 82 7cm-1 for Bi-BTC and ... - Characterization and Modeling. .. Ca)TiO3 and Bi doped (Ba, Sr, Ca)TiO3 ferroelectric ceramics Some emphasis will be on the roles of acceptor-doping and donor-doping in understanding...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 9 pot
... constants of ferrites, ferroelectrics and their composites vary randomly It is due to the mismatching of grains of ferrites and ferroelectrics in the composites and hence it is difficult to estimate ... (BPZT and PZT) are shown in figs (5 & 6) The dielectric constant increases with increase in temperature and becomes maximum at Curie temperature (Tc) and there after it decreases For BPZT and ... Austin and Mott 23 and Appel et al According to Alder and Feinleib 24 the direct frequency dependence conduction due to small polarons is given by the relation Where ω is the angular frequency and...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 10 pot
... on the values of VBO and CBO, it has been found that type-II band alignmentsform at the ZnO/SrTiO3and ZnO/BaTiO3interfaces, while type-I band alignments form atInN/SrTiO3and InN/BaTiO3interfaces ... Based on the values of VBO and CBO, it has beenfound that type-II band alignments form at the ZnO/STO and ZnO/BTO interfaces, whiletype-I band alignments form at the InN/STO and InN/BTO interfaces ... distance from the valence band maximum to the branch point of the IFIGS and X sis the electronegativity of the respective semiconductor The subscripts r and l stand for the right and left side, respectively,...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 11 potx
... obtained from the Tilley – Zeks continuum Landau free energy and Landau-Khalatnikov (LK) dynamic equation (Ahmad et al., 2009; Ong and Ahmad, 2009; Ahmad and Ong, 2009; 2011a; 2011b) The surface ... ferroelectric films, and as the films get thinner the surface effect becomes more significant The continuum Landau free energy for a ferroelectric film, extended by Tilley and Zeks (Tilley and Zeks, 1984), ... is a significant phenomenon and how it can affect switching must be understood The Landau free energy for a ferroelectric film, extended by Tilley and Zeks (Tilley and Zeks, 1984), incorporates...
Ngày tải lên: 19/06/2014, 12:20
Ferroelectrics Characterization and Modeling Part 12 pdf
... p i and q i as order parameters This gives F as a function of p i and q i without the usual integral form Solving eqs (1) and (7) simultaneously with the boundary conditions (i.e eqs (8a) and ... by eq (14) By utilizing eqs (46) and (47), we can express F in terms of p c and q c as Trang 122 2 2K L d λλ c A a a Trang 13where K1 and K2 are given by eq (12) and (14), respectively Thus, we ... ferroelectric and a paraelectric layers The thicknesses of PbTiO3 (PT) and SrTiO3 (ST) layers are LPT and LST, respectively L denotes the periodic thickness of the PT/ST superlattice and the free...
Ngày tải lên: 19/06/2014, 12:20