Polyacrylamide hydrogels for stone restoration: Effect of salt solutions on swelling/deswelling degree and dynamic correlation length

2017 ◽  
Vol 134 (16) ◽  
Author(s):  
Silvia Vicini ◽  
Maila Castellano ◽  
Meiriane C. Faria Soares Lima ◽  
Pedro Licinio ◽  
Glaura Goulart Silva
Keyword(s):  
Correlation Length ◽  
Salt Solutions ◽  
Dynamic Correlation ◽  
Polyacrylamide Hydrogels ◽  
Restoration Effect

scholarly journals Extracting the dynamic correlation length of actin networks from microrheology experiments

Soft Matter ◽  
2014 ◽  
Vol 10 (41) ◽  
pp. 8324-8329 ◽  
Author(s):  
Adar Sonn-Segev ◽  
Anne Bernheim-Groswasser ◽  
Yael Roichman
Keyword(s):  
Correlation Length ◽  
Actin Filament ◽  
Mechanical Response ◽  
Length Scale ◽  
Filament Length ◽  
Actin Networks ◽  
Dynamic Correlation

Microrheology is used to measure the length scale dependent mechanical response of F-actin gels. The dynamic correlation length thus measured has a non-trivial dependence on the actin filament length.

scholarly journals Dynamic correlation length growth in superspin glass: Bridging experiments and simulations

2012 ◽  
Vol 101 (24) ◽  
pp. 242409 ◽  
Author(s):  
S. Nakamae ◽  
C. Crauste-Thibierge ◽  
D. L'Hôte ◽  
E. Vincent ◽  
E. Dubois ◽  
...  
Keyword(s):  
Correlation Length ◽  
Dynamic Correlation ◽  
Length Growth ◽  
Superspin Glass

scholarly journals Dynamic correlation length scales under isochronal conditions

2015 ◽  
Vol 142 (6) ◽  
pp. 064504 ◽  
Author(s):  
R. Casalini ◽  
D. Fragiadakis ◽  
C. M. Roland
Keyword(s):  
Correlation Length ◽  
Length Scales ◽  
Dynamic Correlation

Isomorphous replacement in electron diffraction of wet crystals of rat hemoglobin

1983 ◽  
Vol 41 ◽  
pp. 446-447
Author(s):  
William F. Tivol ◽  
Murray Vernon King ◽  
D. F. Parsons
Keyword(s):  
Electron Diffraction ◽  
Heavy Atom ◽  
Isomorphous Substitution ◽  
X Ray Diffraction ◽  
Salt Solutions ◽  
X Ray ◽  
Isomorphous Replacement ◽  
Structure Factors ◽  
Diffraction Structure ◽  
The Mean

Feasibility of isomorphous substitution in electron diffraction is supported by a calculation of the mean alteration of the electron-diffraction structure factors for hemoglobin crystals caused by substituting two mercury atoms per molecule, following Green, Ingram & Perutz, but with allowance for the proportionality of f to Z3/4 for electron diffraction. This yields a mean net change in F of 12.5%, as contrasted with 22.8% for x-ray diffraction.Use of the hydration chamber in electron diffraction opens prospects for examining many proteins that yield only very thin crystals not suitable for x-ray diffraction. Examination in the wet state avoids treatments that could cause translocation of the heavy-atom labels or distortion of the crystal. Combined with low-fluence techniques, it enables study of the protein in a state as close to native as possible.We have undertaken a study of crystals of rat hemoglobin by electron diffraction in the wet state. Rat hemoglobin offers a certain advantage for hydration-chamber work over other hemoglobins in that it can be crystallized from distilled water instead of salt solutions.

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

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