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Convective depletion during the fast propagation of a nanosphere through a polymer solution
Odijk, Theo - In: Physica A: Statistical Mechanics and its Applications 337 (2004) 3, pp. 389-397
A theory of nonlinear convective depletion is set up as a nanosphere translates fast through a semidilute polymer …-similar solution of the convective depletion equation is argued to be feasible at high velocities. The nature of the thin boundary … layer in front of the propagating particle is analyzed. One example of convective depletion is when a charged protein moves …
Persistent link: https://www.econbiz.de/10010874825
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Analysis of Correlations Between Sites in Models of Protein Sequences
Giraud, B. G.; Lapedes, Alan; Liu, Lon Chang - Santa Fe Institute - 1998
A criterion based on conditional probabilities, related to the concept of algorithmic distance, is used to detect correlated mutations at noncontiguous sites on sequences. We apply this criterion to the problem of analyzing correlations between sites in protein sequences, however, the analysis...
Persistent link: https://www.econbiz.de/10005790763
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Exploring the universal dynamics of dilute polymer solutions in extensional flows
Prabhakar, R.; Sunthar, P.; Ravi Prakash, J. - In: Physica A: Statistical Mechanics and its Applications 339 (2004) 1, pp. 34-39
A systematic framework introduced recently to obtain parameter-free predictions of material properties of dilute polymer solutions in extensional flows is reviewed. The essential constraint of ensuring that the model polymer molecule has a finite length is met by using a bead–spring chain...
Persistent link: https://www.econbiz.de/10010874058
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Percolation thresholds of a group of anisotropic three-dimensional fracture networks
Khamforoush, M.; Shams, K. - In: Physica A: Statistical Mechanics and its Applications 385 (2007) 2, pp. 407-420
Percolation thresholds (average number of connections per object) of two models of anisotropic three-dimensional (3D) fracture networks made of mono-disperse hexagons have been calculated numerically. The first model is when the fracture networks are comprised of two groups of fractures that are...
Persistent link: https://www.econbiz.de/10010874149
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Generalized excluded volume and the diffusivity and viscosity of supercooled liquids and glasses over the entire fragility spectrum
Rah, Kyunil - In: Physica A: Statistical Mechanics and its Applications 378 (2007) 2, pp. 167-182
Transport properties of glass-formers near glass transition reflect the varying degrees of the sensitivity of the solid-like dynamics and structures with respect to temperature, depending on their fragility. Notably, however, most glasses resume Arrehenius transport behavior upon onset of...
Persistent link: https://www.econbiz.de/10010872295
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Simulation of random packing of binary sphere mixtures by mechanical contraction
Kristiansen, Kai de Lange; Wouterse, Alan; Philipse, Albert - In: Physica A: Statistical Mechanics and its Applications 358 (2005) 2, pp. 249-262
The mechanical contraction simulation for random dense packings is extended to binary mixture of spheres. The volume packing density as a function of sphere composition follows a characteristic triangular shape and resembles previous experiments on length scales from colloidal particles to metal...
Persistent link: https://www.econbiz.de/10010591827
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Excluded volume effect on entropy and clustering behaviors in supercooled liquids and glasses
Rah, Kyunil - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 1, pp. 27-39
We study the significant entropy changes in supercooling and glass transition by developing a two (H and L) state … various glass-formers and the temperature dependence (at fixed pressure of 1 atmosphere) of the entropy difference Δso between …
Persistent link: https://www.econbiz.de/10011061266
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Discretization orders for protein side chains
Costa, Virginia; Mucherino, Antonio; Lavor, Carlile; … - In: Journal of Global Optimization 60 (2014) 2, pp. 333-349
Proteins are important molecules that are widely studied in biology. Since their three-dimensional conformations can … Branch & Prune. When dealing with molecules such as proteins, whose chemical structure is known, a priori information can be … proteins. Computational experiments on artificial and real instances from NMR show the usefulness of the proposed orders …
Persistent link: https://www.econbiz.de/10010994098
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Biphasic vesicle: instability induced by adsorption of proteins
Allain, Jean-Marc; Ben Amar, Martine - In: Physica A: Statistical Mechanics and its Applications 337 (2004) 3, pp. 531-545
with the expulsion of one or two rafts when one introduces proteins on the membrane. In this paper, we give a physical … interpretation of the budding of the raft phase. An approach based on the energy of the system including the presence of proteins is … strongly dependent on the nature of the proteins: a regime of easy budding when the proteins are strongly coupled to the …
Persistent link: https://www.econbiz.de/10010872938
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IQENS dynamics in hydrated Crambin
Wanderlingh, U.N.; Giordano, R.; Dianoux, A.J.; … - In: Physica A: Statistical Mechanics and its Applications 304 (2002) 1, pp. 276-282
In this paper, we present a high-resolution Incoherent Quasi-elastic Neutron Scattering experiment on Crambin hydrated at h=0.6g/g. Hydration was attained by using D2O and H2O, in order to separate the contribution of the protein from that of the water. The spectra were interpreted in terms of...
Persistent link: https://www.econbiz.de/10010874705