نتایج جستجو برای: dispersion interaction

تعداد نتایج: 622852  

2010
Zhenyu Sun Ian O’Connor Shane D Bergin Jonathan N Coleman

Dispersions of single walled nanotubes in N-methyl-2-pyrrolidone have been exposed to water and variations in storage temperature. The subsequent degradation of dispersion quality has been monitored using sedimentation, UV-vis-NIR, and AFM measurements. Four parameters derived from AFM; the root-mean-square bundle diameter, the total number of dispersed objects (individuals and bundles) per uni...

Journal: :Physical chemistry chemical physics : PCCP 2017
Ignat Harczuk Balazs Nagy Frank Jensen Olav Vahtras Hans Ågren

We present a new way to compute the two-body contribution to the dispersion energy using ab initio theory. By combining the complex polarization propagator method and the LoProp transformation, local contributions to the Casimir-Polder interaction is obtained. The full dispersion energy in dimer systems consisting of pairs of molecules including H2, N2, CO, CH4, pyridine, and benzene is investi...

2016
Jifu Tan Wesley Keller Salman Sohrabi Jie Yang Yaling Liu

Nanodrug-carrier delivery in the blood stream is strongly influenced by nanoparticle (NP) dispersion. This paper presents a numerical study on NP transport and dispersion in red blood cell (RBC) suspensions under shear and channel flow conditions, utilizing an immersed boundary fluid-structure interaction model with a lattice Boltzmann fluid solver, an elastic cell membrane model and a particle...

Journal: :Chemical communications 2011
Jiao-Jing Shao Si-Da Wu Shao-Bo Zhang Wei Lv Fang-Yuan Su Quan-Hong Yang

A strong solid/liquid interfacial interaction is found between porous alumina and graphene oxide (GO) aqueous dispersion, which promotes a fast enrichment of GO on the alumina surface and results in the formation of a GO hydrogel.

2013
B. I. Afinogenov A. A. Fedyanin

Experimental observation of Tamm plasmon-polariton (TPP) and surface plasmonpolariton (SPP) hybrid mode in metal/photonic crystal system is reported. Interaction between TPP and SPP leads to repulsion of their dispersion curves.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...

2015
M. Dentz F. P. J. de Barros

Dispersion quantifies the impact of subscale velocity fluctuations on the effective movement of particles and the evolution of scalar distributions in heterogeneous flows. Which fluctuation scales are represented by and what is the meaning of dispersion, depends on the definition of the subscale, or the corresponding coarse graining scale. We study here the dispersion effect due to velocity flu...

Journal: :International journal of pharmaceutics 2015
Siok-Yee Chan Sheng Qi Duncan Q M Craig

While hot melt extrusion is now established within the pharmaceutical industry, the prediction of miscibility, processability and structural stability remains a pertinent issue, including the issue of whether molecular interaction is necessary for suitable performance. Here we integrate the use of theoretical and experimental drug-polymer interaction assessment with determination of processabil...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
ahmad tavasoli kambiz sadaghiani ali nakhaeipour masoumeh ahangari

an extensive study of fischer-tropsch synthesis (fts) on alumina-supported cobalt catalysts with different amounts of cobalt is reported. up to 40 wt % of cobalt, is added to the catalysts by impregnation method. the effect of the cobalt loading on the reducibility of the cobalt oxide species, dispersion of the cobalt, average clusters size, water-gas shift (wgs) activity and activity and selec...

2007
Andrea Galeotti Sanjeev Goyal

The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant ‘local’ influence in shaping individual behavior suggests that firms, governments and developmental agencies should explicitly incorporate it in the design of their marketing and developmental strategies. This paper develop...

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