Dynamical Behaviour of Structured Macromolecular Solutions

Farsaci, F.; Fontanella, M. E.; Salvato, G.; Wanderlingh, F.; Giordano, R.; Wanderlingh, U.

doi:10.1080/00319108908028451

Cited by 18 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These data, obtained by Privalov and Khechinashvili [2] for conditions different from ours, suggest that process a) cannot be ,,a priori,~ excluded even if the temperature of our experiment is much lower than TD (TD = (55 + 80) ~ depending on the pH value) and further questionable assumptions are necessary, as for example the aggregates should be very fragile and all the rates of the reactions in a) very slow, whereas the rate of a single step (the unfolded--* native transition), surely not the fastest one, is about 1 s [5] for proteins much larger than lysozyme, i.e. Moreover, process c) agrees with the ,,spatially ordered clusters~, hypothesis made in explaining the data from other experimental studies of water-lysozyme solutions [1]. On the contrary, we observed at 35 and 45~ (see fig.…”

Section: -Experimental Detailssupporting

confidence: 77%

See 1 more Smart Citation

Time-dependent heat capacity of water-lysozyme solution

Bertolini¹,

Cassettari²,

Salvetti³

et al. 1992

Il Nuovo Cimento D

View full text Add to dashboard Cite

We report here the first observation of the time-dependent heat capacity of water-lysozyme solution. The observed increase of heat capacity in time occurs independently of the lysozyme concentration and the pH value of the solvent. The time necessary to attain the heat capacity equilibrium value and the amplitude of the effect are not well reproducible; the former tends to increase with temperature, while the amplitude decreases and practically disappears about 35~ Evolution of a spatial order of the proteins in water and/or of water molecules interacting with the proteins is considered as a possible explanation for the results. The phenomenon promises to be an important tool to study the role of water in biological organization and activity.PACS 65.20 -Heat capacities of liquids. PACS 87.45 -Biomechanics, biorheology, biological fluid dynamics.

show abstract

Section: -Experimental Detailssupporting

confidence: 77%

“…This behaviour has been attributed to the development of an order similar to that in thyxotropic structures [1]. This behaviour has been attributed to the development of an order similar to that in thyxotropic structures [1].…”

mentioning

confidence: 73%

Time-dependent heat capacity of water-lysozyme solution

Bertolini¹,

Cassettari²,

Salvetti³

et al. 1992

Il Nuovo Cimento D

View full text Add to dashboard Cite

show abstract

“…The reduced USAXS data was analyzed by Irena 62 . The form factor of spherical particles was used, while the inter-particle structure factor 42 63 64 was employed to characterize the interaction among NiAl-type precipitates. The precipitate-size distribution becomes more symmetrical and broader with an increasing volume fraction than does the LSW distribution 65 .…”

Section: Methodsmentioning

confidence: 99%

Nano-sized precipitate stability and its controlling factors in a NiAl-strengthened ferritic alloy

Sun

Song

Ilavský

et al. 2015

Sci Rep

View full text Add to dashboard Cite

Coherent B2-ordered NiAl-type precipitates have been used to reinforce solid-solution body-centered-cubic iron for high-temperature application in fossil-energy power plants. In this study, we investigate the stability of nano-sized precipitates in a NiAl-strengthened ferritic alloy at 700–950 °C using ultra-small angle X-ray scattering and electron microscopies. Here we show that the coarsening kinetics of NiAl-type precipitates is in excellent agreement with the ripening model in multicomponent alloys. We further demonstrate that the interfacial energy between the matrix and NiAl-type precipitates is strongly dependent on differences in the matrix/precipitate compositions. Our results profile the ripening process in multicomponent alloys by illustrating controlling factors of interfacial energy, diffusivities, and element partitioning. The study provides guidelines to design and develop high-temperature alloys with stable microstructures for long-term service.

show abstract

“…2. We associate this prominent peak with the spatial distribution of heterogeneities, and accordingly model the heterogeneity scattering with a stochastic phenomenological structure factor [21] combined with a spheroidal form factor. A similar model was used to describe scattering from nanoprecipitates in a PRL 105, 027202 (2010) P H Y S I C A L R E V I E W L E T T E R S…”

mentioning

confidence: 99%

Magnetostriction and Magnetic Heterogeneities in Iron-Gallium

et al. 2010

View full text Add to dashboard Cite

Iron-gallium alloys Fe(1-x)Ga(x) exhibit an exceptional increase in magnetostriction with gallium content. We present small-angle neutron scattering investigations on a Fe(0.81)Ga(0.19) single crystal. We uncover heterogeneities with an average spacing of 15 nm and with magnetizations distinct from the matrix. The moments in and around the heterogeneities are observed to reorient with an applied magnetic field or mechanical strain. We discuss the possible roles played by nanoscale magnetic heterogeneities in the mechanism for magnetostriction in this material.

show abstract

Dynamical Behaviour of Structured Macromolecular Solutions

Cited by 18 publications

References 8 publications

Time-dependent heat capacity of water-lysozyme solution

Time-dependent heat capacity of water-lysozyme solution

Nano-sized precipitate stability and its controlling factors in a NiAl-strengthened ferritic alloy

Magnetostriction and Magnetic Heterogeneities in Iron-Gallium

Contact Info

Product

Resources

About