نتایج جستجو برای: grained model

تعداد نتایج: 2120543  

Journal: :journal of ultrafine grained and nanostructured materials 2012
matthias militzer hamid azizi-alizamini vishnu charan sangem

this paper provides an overview on obtaining low-carbon ultra-fine grained dual-phase steels through rapid intercritical annealing of cold-rolled sheet as improved materials for automotive applications. a laboratory processing route was designed that involves cold-rolling of a tempered martensite structure followed by a second tempering step to produce a fine grained aggregate of ferrite and ca...

Journal: :Journal of computational chemistry 2010
Maciej Maciejczyk Aleksandar Spasic Adam Liwo Harold A. Scheraga

Atomistic simulations of nucleic acids are prohibitively expensive and, consequently, reduced models of these compounds are of great interest in the field. In this work, we propose a physics-based coarse-grained model of nucleic-acid bases in which each base is represented by several (3-5) interaction centers. van der Waals interactions are modeled by Lennard-Jones spheres with a 12-6 potential...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Juan P Garrahan David Chandler

We introduce a coarse-grained model for atomic glass formers. Its elements are physically motivated local microscopic dynamical rules parameterized by observables. Results of the model are established and used to interpret the measured behaviors of supercooled fluids approaching glass transitions. The model predicts the presence of a crossover from hierarchical super-Arrhenius dynamics at short...

Journal: :The Journal of chemical physics 2004
Teemu Murtola Emma Falck Michael Patra Mikko Karttunen Ilpo Vattulainen

We construct a coarse-grained (CG) model for dipalmitoylphosphatidylcholine (DPPC)/cholesterol bilayers and apply it to large-scale simulation studies of lipid membranes. Our CG model is a two-dimensional representation of the membrane, where the individual lipid and sterol molecules are described by pointlike particles. The effective intermolecular interactions used in the model are systematic...

2012
Marta Enciso Christof Schuette Luigi Delle Site

We propose the first, to our knowledge, coarse-grained modeling strategy for peptides where the effect of changes of the pH can be efficiently described. The idea is based on modeling the effects of the pH value on the main driving interactions. We use reference data from atomistic simulations and experimental databases and transfer its main physical features to the coarse-grained resolution ac...

2018
Roman V Reshetnikov Anastasia V Stolyarova Arthur O Zalevsky Dmitry Y Panteleev Galina V Pavlova Dmitry V Klinov Andrey V Golovin Anna D Protopopova

Modeling tools provide a valuable support for DNA origami design. However, current solutions have limited application for conformational analysis of the designs. In this work we present a tool for a thorough study of DNA origami structure and dynamics. The tool is based on a novel coarse-grained model dedicated to geometry optimization and conformational analysis of DNA origami. We explored the...

2004
Teemu Murtola Emma Falck Mikko Karttunen Ilpo Vattulainen

We construct a coarse-grained ~CG! model for dipalmitoylphosphatidylcholine ~DPPC!/cholesterol bilayers and apply it to large-scale simulation studies of lipid membranes. Our CG model is a two-dimensional representation of the membrane, where the individual lipid and sterol molecules are described by pointlike particles. The effective intermolecular interactions used in the model are systematic...

1999
John E. Savage

Multi-grained parallel computers can be very e ective on computationally intensive problems that have important serial and parallel components. We examine the Mesh SuperHet, a model of this type consisting of the close coupling of a d-dimensional toroidal mesh of coarse-grained processors to a serial machine containing memory modules connected via a low-diameter network to a fast serial process...

Journal: :Journal of molecular modeling 2015
Zechuan Yu Denvid Lau

At nanoscale, atomistic simulation is widely used for investigating crystalline chitin fibers, the structural component for many biological materials. However, the longitudinal dimension of naturally occurring chitin fibers exceeds hundreds of nanometer, beyond the investigation range of all-atom simulation due to the limitation of computational power. Under this context, coarse-grained simulat...

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