direct measurement of sample mass and volume

... friction and the movement of soil in the axial direction (Gill, 1968; Tollner and Verma, 1984) Use of such a lubricated penetrometer is of questionable advantage, as the mechanics of penetration of ... predictions of tire sinkage and torque, and hence drawbar pull (Turnage, 1972) The clay and sand mobility numbers required refining to reflect the variation in compactibility and strength between sands ... two and eight times greater than roots (Table 2) Further indirect evidence of this difference comes from comparing studies of root elongation rate and penetrometer resistance with measurements of...

Ngày tải lên: 11/08/2014, 15:20

... in terms of the projection of energy band in bulk Si and confinement effect: the confinement decreases the energy of HO states and increases the energy of the LU states, but the magnitude of the ... energy of nanowire in the supercell, lSi (lH) is the chemical potential of an Si (H) atom, nSi (nH) is the number of Si (H) atoms, and ez is the zero-point energy of Si–H vibrations The value of ... is 1.5 Â 10À3 e/Å3 The wave functions of p- and p*-like bands on Si(1 1)-(2 Â 1) surfaces are also shown on the inset of (a) and (b), respectively p*-like bands on {1 1} facets, respectively This...

Ngày tải lên: 16/03/2014, 15:37

... of the structural and functional properties of the native proteins and thus may offer a useful basis for the design of agents for therapeutic intervention [7] Studies of different fragments and ... containing 70 lgÆmL)1 of phospholipids in the absence (s) and presence of 0.28 mol% (d), 0.57 mol% (d), 1.2 mol% (d), 1.8 mol% (m), and 2.1 mol% (n) KL4 in a final volume of mL of mM Hepes buffer, ... function of time for samples containing 70 lgÆmL)1 (circles) or 160 lgÆmL)1 of phospholipid (triangles) in the absence (white symbols) and presence (black symbols) of 0.57 mol% KL4 in a final volume of...

Ngày tải lên: 30/03/2014, 11:20

... significantly decreases Dt and Sa The effects of pull and heat are very similar and not as significant as the effect of velocity Delay and pressure are factors to change the taper length of the pipettes ... http://www.nanoscalereslett.com/content/6/1/401 Page of 10 [ m] and big pipettes The small pipette has a lower Sa and higher Sdr To determine the effect of pulling direction on surface texture of pipette inner wall, autocorrelation of roughness ... tendency of orientation and is not affected by pulling direction The fact that both the pipette tips and pipette inner walls are rough may help better understanding of the mechanism of applications...

Ngày tải lên: 21/06/2014, 03:20

... (Hc) of 355.8 and 93.6 Oe, respectively, for NCs and PSC, saturation magnetizations (Ms) of 125.7 and 162.5 emu/g, respectively, for NCs and PSC, and remnant magnetization (M r ) up to 46.6, and ... http://www.nanoscalereslett.com/content/6/1/285 Page of published SY and YQ: partly carried out the TEM and HRTEM experiments, as well as drafted the manuscript XL, LS, and HL: conceived of the study, and participated in its design and coordination ... out the experimental and numerical calculations, as well as drafted the manuscript VSM and PPMS: performed an analysis and interpretation of results, and gave final approval of the version to be...

Ngày tải lên: 21/06/2014, 04:20

... ð7Þ where Pmax and h(w) are denoted as the driving force and the displacement response of the indenter, respectively; U is the phase angle between Pmax and h(w); m is the mass of the indenter ... resolution of the system was 50 nN; and Ac is contact area when the material in contact with indenter being loaded at Pmax Efilm and vfilm are elastic modulus and Poisson’s ratio for thin films and, Ei ... system The average values of the coefficient of friction (l) of four scratched at the same maximum constant normal load was used to estimate the friction behavior of the samples After scratching,...

Ngày tải lên: 22/06/2014, 01:20

... readings of voltage drops at different portions of the sample Result and Discussion FTIR Studies Characterization Fourier Transform Infrared Spectroscopy Functionalization of MWCNTs and conversion of ... MWCNT in case of former and with wt% in case of the latter Electrical Properties Fig SEM images of a raw, b acid modified-MWCNTs and c amide-MWCNTs As in the case of TS, the YM of the amide-MWCNTs/ ... duration and prolonged use between 200 and 350 °C without much deterioration in mechanical and other properties Polyimides are produced by the condensation reaction of an aromatic dianhydride and...

Ngày tải lên: 22/06/2014, 01:20

... demonstrated that the PL of CdSe core and CdSe/ZnS core/shell QDs in the first ns arises from the intrinsic bright ± 1U and ± 1L states with lifetime of about 60 ps and 450 ps, respectively, and from surface ... superposition of three lorentzian curves (see inset of Fig 1A), obtaining the energetic separations among the three states, E1,2 and E2,3 We found E1,2 = 21 meV and E2,3 = 16 meV for core QDs and E1,2 ... because of the relatively short temporal range studied in our experiments In light of these results we can associate the transitions |1i and |2i to carrier recombination from ± 1U and ± 1L states and...

Ngày tải lên: 22/06/2014, 18:20

... AFM and (b) histogram of the QD height of sample A; (c) AFM and (d) histogram of the QD height of sample B; (e) AFM and (f) histogram of the QD height of sample C; (g) AFM of sample D; (h) AFM of ... lateral size of (57.2 ± 10.8) nm and an average height of (6.1 ± 2.5) nm The formation of two families of QDs was attributed to two growth mode transition onsets at 1.45 and 1.59 ML of InAs coverage ... power of 0.3 W/cm2; (b) TRPL for samples B, C, and E 12.8 meV However, its QD peak had a big blue-shift and less intensity It can be seen that, from sample A to C, as the density and size of QDs...

Ngày tải lên: 22/06/2014, 19:20

... correlation of the Au-atop and Pt-atop CO bands on the surface of the alloy nanoparticles of a wide range of bimetallic composition with the electronic effect as a result of the d-band shift of Pt ... Pt65/SiO2, and (i) Pt/SiO2 Such a dependence of the CO bands on the bimetallic concentration is remarkable, and is to our knowledge observed for the first time The higher-frequency band Fig Plot of the ... Au-atop and Pt-atop CO bands vs the composition of Au in the alloy AuPt nanoparticles The length of the bars represents half of the peak width (determined from the full width at half of the peak...

Ngày tải lên: 22/06/2014, 22:20

... mineral soil Samples of spodic horizons consisted of a uniform column of soil cut by a trowel from the top of the horizon to a depth of 10 cm A total of 10 samples per pedon and 20 samples per ... release and persistence of organic acids (ligands) capable of mobilizing Fe and Al Consequently, the study of relationships between forest floor properties and the degree of development of albic and ... calculated for each sample of albic horizon; t is its thickness (cm) and Vand Care the numerical values of its Munsell value and chroma; and Due to the design of the study, the thickness of the forest...

Ngày tải lên: 08/08/2014, 19:21

... image of mono -and few-layer MoS2 crystals on a silicon substrate with etched holes of 1.0 and 1.5 µm in diameter (b) PL spectra of monolayer and few-layer MoSe2 (c) PL spectra of monolayer and ... electron cut-off) and (b) and (c) low binding energy region (near the Ef) during the deposition of Cs2CO3 on bulk MoS2 The XPS core level spectra of (d) S 2p and (e) Mo 3d during the deposition of Cs2CO3 ... effects of the spin-orbit coupling and inversion symmetry-breaking lead to the clear spin-split bands only in the monolayer The band structure of 2D TMDCs, especially the transition of bandgap,...

Ngày tải lên: 09/09/2015, 11:16

... extracellular environment of the brain The good temporal and chemical resolutions of such in vivo cyclic voltammetric experiments offer improved understanding of the chemistry of the brain These repetitive ... absorptivity of R and DO and CO are the diffusion coefficient and concentration of O, respectively Hence, A increases linearly with the square root of time (t1/2), reflecting the continuous generation of ... information on the theory of cyclic voltammetry, and the interpretation of cyclic voltammograms, see Refs 1, 7, 20, and 21 2.2 SPECTROELECTROCHEMISTRY The coupling of optical and electrochemical methods,...

Ngày tải lên: 25/10/2013, 08:20

... shows a profile and an axis of revolution to create the revolve surface The resulting surface, revolved through an angle of 180-degree, is shown in Figure 9-12 Figure 9-11 The profile and revolution ... Surfaces > Offset Surfaces > Offset The Offset tool is used to create a surface that is at an offset distance from a reference surface To so, choose the Offset tool from the Surfaces toolbar The Offset ... sketch of the sweep profile for creating the second sweep feature Apply the Coincident constraint between the center of ellipse and the end point of the guide curve Exit the Sketcher workbench and...

Ngày tải lên: 16/12/2013, 03:15

... physical and dimensional criteria of ASTM A500 or CSA G-40.2l Wall thickness, width and depth of rectangular and square HSS, and outside diameter of round HSS have converted to SI units and rounded ... TABLE OF CONTENTS PAGE Dimensions and Section Properties of Rectangular HSS Dimensions and Section Properties of Square HSS .14 Dimensions and Section Properties of Round ... constant of cross-section (mm3) Outside diameter of round HSS (mm) Nominal depth minus times the design wall thickness, t (mm) Moment of inertia of cross-section (mm4) Moment of inertia of cross-section...

Ngày tải lên: 22/12/2013, 16:15

... principles and actual devices Electronic and Optoelectronic Properties of Semiconductor Structures provides engineering and physics students and practitioners with complete and coherent coverage of key ... manual and set of viewgraphs for use in lectures is available for instructors   received his Ph.D from the University of Chicago and is Professor of Electrical Engineering and Computer ... University of Michigan, Ann Arbor He has held visiting positions at the University of California, Santa Barbara and the University of Tokyo He is the author of over 250 technical papers and of seven...

Ngày tải lên: 24/01/2014, 17:34

... magnet and the product was washed several time with distilled water Finally it was annealed in oven at 6000C for hours 2.2 Measurements of properties of Ni-Co ferrite The morphology of the samples ... the wavelength of the X-ray, θ the angle between the incident and diffracted beams (degree) and d the particle size of the sample (nm) (in Table 1) 3.2 FT-IR spectroscopy The band wavenumber ... the compensation of ion Fe3+ in the tetrahedral and octahedral location That led to increasing of total magnetization of a molecule Ni1-xCoxFe2O4 and hence there is increasing of MS (table 3)...

Ngày tải lên: 13/02/2014, 04:20

... mRNA and also of its own transcript For this reason, the level of mRNA for the wildtype form of MCPIP and the level of mRNA for IL-1b (Fig 5A, lane 3) were lower in comparison to the level of mRNA ... lanes 2,3 and 4, lower band) The levels of mutant and wild-type MCPIP mRNAs were higher when these vectors were co-transfected with a vector overexpressing IL-1b (Fig 5, lanes and 4, upper bands) ... clarify the dynamics and features of this protein Role of MCPIP in regulation of the endogenous IL-1b transcript level After identification of a PIN domain in the MCPIP by use of bioinformatics,...

Ngày tải lên: 18/02/2014, 14:20

... Araujo Soares RM (2006) Secretion of serine peptidase by a clinical strain of Candida albicans: influence of growth conditions and cleavage of human serum proteins and extracellular matrix components ... fungicidal effect of a lm concentration of trappin-2 towards C albicans was time-dependent, reaching 92% after h and 98% after 18 h (Fig 5) Effect of NaCl and heparin on the antibacterial and antifungal ... SDS ⁄ PAGE gel and analyzed by western blotting using polyclonal anti-trappin-2 sera The molecular masses of the protein standards are shown on the left and antifungal activities of trappin-2 using...

Ngày tải lên: 18/02/2014, 17:20