Stable nanoparticle dispersion in aqueous solutions was obtained with partially sulfonated polystyrene. The hydrophobic association of the backbone chains and phenyl groups is balanced by the electrostatic repulsion of the sulfonate groups on the particle surface. The size distribution of the sulfonated polystyrene particles in relation to concentration, degree of sulfonation and chain length, ...

the dehdasht bauxite deposits are located 40 km northeast of dehdasht in kohgilouye and boyer-ahmad province. it is a part of the irano-hymalayan karstic bauxite belt located in the upper part of karstic depressions of santonian-turonian sarvak carbonate formation. the aim of this study is to determine various geneses of pisoliths and prevalent processes in bauxitization. for this purpose, labo...

remanufacturing is an industrial process that makes used products reusable. remanufacturing is a way to establish a closed-loop supply chain. one of the important aspects in both reverse logistics and remanufacturing is pricing of returned and remanufactured products (called cores) that it has been noticed in this paper. in addition, in this paper the researchers have tried to present a mathema...

Context. Stars form in the cold dense cores of interstellar molecular clouds and the detailed knowledge of the spectrum of masses of such cores is clearly a key for the understanding of the origin of the IMF. To date, observations have presented somewhat contradictory evidence relating to this issue. Aims. In this paper we propose to derive the mass function of a complete sample of dense molecu...

We have studied the functional properties of iodinated histones. Isolated, denatured histones were iodinated at trace levels and then renatured together with carrier histones and high molecular weight DNA to form nucleohistone. Nucleosomes were prepared from the reconstitute using micrococcal nuclease, and the relative representations of the individual iodinated tyrosines of the histones in the...

I compare the density profile of dark matter (DM) halos in cold dark matter (CDM) N-body simulations with 1 h Mpc, 32 h Mpc, 256 h Mpc and 1024 h Mpc box sizes. I compare the profiles when the most massive halos are composed of about 10 DM particles. The DM density profiles of the halos in the 1 h Mpc box at redshift z ∼ 10 show systematically shallower cores with respect to the corresponding h...

The goal of this document is to provide a computationally practical guide to game-theoretic problems. We discuss the current intractibility of finding Nash Equilibria exactly, and of even specifying a game in normal form for a large number of players. But hope is not lost. Efficiently computable solution concepts are presented as alternatives to Nash Equilibria, with a corresponding notion of P...

Patterning metallic nanoparticles on substrate surfaces is important in a number of applications. However, it remains challenging to fabricate such patterned nanoparticles with easily controlled structural parameters, including particle sizes and densities, from simple methods. We report on a new route to directly pattern pre-formed gold nanoparticles with different diameters on block copolymer...

Aims. We aim to understand the formation of dense cores by magnetosonic waves in regions where the thermal to magnetic pressure ratio is small. Because of the low-ionisation fraction in molecular clouds, neutral and charged particles are weakly coupled. Ambipolar diffusion then plays an important rôle in the formation process. Methods. A quiescent, uniform plasma is perturbed by a fast-mode wav...

Correspondence: [email protected] Department of Computer Science, University of Illinois at Urbana-Champaign, USA Full list of author information is available at the end of the article Abstract ChaNGa is an N-body cosmology simulation application implemented using Charm++. In this paper, we present the parallel design of ChaNGa and address many challenges arising due to the high dynamic ran...