697 research outputs found
Supporting Information: Short and long time drop dynamics on lubricated substrates
Supporting Information: Short and long time drop dynamics on lubricated
substrate
Electrothermal flow in Dielectrophoresis of Single-Walled Carbon Nanotubes
We theoretically investigate the impact of the electrothermal flow on the
dielectrophoretic separation of single-walled carbon nanotubes (SWNT). The
electrothermal flow is observed to control the motions of semiconducting SWNTs
in a sizeable domain near the electrodes under typical experimental conditions,
therefore helping the dielectrophoretic force to attract semiconducting SWNTs
in a broader range. Moreover, with the increase of the surfactant
concentration, the electrothermal flow is enhanced, and with the change of
frequency, the pattern of the electrothermal flow changes. It is shown that
under some typical experimental conditions of dielectrophoresis separation of
SWNTs, the electrothermal flow is a dominating factor in determining the motion
of SWNTs.Comment: 5 pages, 4 figures, Submitted to PR
On a theorem of Kang and Liu on factorised groups
[EN] Kang and Liu ['On supersolvability of factorized finite groups', Bull. Math. Sci. 3 (2013), 205-210] investigate the structure of finite groups that are products of two supersoluble groups. The goal of this note is to give a correct proof of their main theorem.The first author was supported by the grant MTM2014-54707-C3-1-P from the Ministerio de Economia y Competitividad, Spain, and FEDER, European Union, and a project of Natural Science Foundation of Guangdong Province (No. 2015A030313791).Ballester-Bolinches, A.; Pedraza Aguilera, MC. (2018). On a theorem of Kang and Liu on factorised groups. Bulletin of the Australian Mathematical Society. 97(1):54-56. https://doi.org/10.1017/S0004972717000363S5456971Ezquerro, L. M., & Soler-EscrivĂ , X. (2003). On MutuallyM-Permutable Products of Finite Groups. Communications in Algebra, 31(4), 1949-1960. doi:10.1081/agb-120018515Kang, P., & Liu, Q. (2013). On supersolvability of fatorized finite groups. Bulletin of Mathematical Sciences, 3(2), 205-210. doi:10.1007/s13373-013-0032-4Ballester-Bolinches, A., Esteban-Romero, R., & Asaad, M. (2010). Products of Finite Groups. de Gruyter Expositions in Mathematics. doi:10.1515/9783110220612Ballester-Bolinches, A., Cossey, J., & Pedraza-Aguilera, M. C. (2001). ON PRODUCTS OF FINITE SUPERSOLUBLE GROUPS. Communications in Algebra, 29(7), 3145-3152. doi:10.1081/agb-501
Species-specific developmental toxicity in rats and rabbits: generation of a reference compound list for development of alternative testing approaches
For regulatory information requirements, developmental toxicity testing is often conducted in two mammalian species. In order to provide a set of reference compounds that could be used to explore alternative approaches to supersede testing in a second species, a retrospective data analysis was conducted. The aim was to identify compounds for which species sensitivity differences between rats and rabbits are not caused by maternal toxicity or toxicokinetic differences. A total of 330 compounds were analysed and classified according to their species-specific differences. A lack of concordance between rat and rabbit was observed in 24% of the compounds, of which 10% were found to be selective developmental toxicants in one of the species. In contrast to previously published analyses the presented comparison is based entirely on publically data allowing validating and comparing alternative approaches for developmental toxicity testing. Furthermore, this list could be useful to identify mechanisms leading to species differences
Some solubility criteria in factorised groups
This paper has been published in Bulletin of the Australian Mathematical Society, 86(1):22-28 (2012).
Copyright 2012 by Australian Mathematical Publishing Association Inc and Cambridge University Press Journals.
The final publication is available at
http://journals.cambridge.org/abstract_S0004972711003418In this paper, solubility of groups factorised as a product of two subgroups which are connected by certain permutability properties is studied.The research of the second and the third authors has been supported by the grant MTM2010-19938-C03-01 from the Ministerio de Ciencia e Innovacion (Spanish government).http://dx.doi.org/10.1017/S0004972711003418Asaad, M.; Ballester Bolinches, A.; Esteban Romero, R. (2012). Some solubility criteria in factorised groups. Bulletin of the Australian Mathematical Society. (86). doi:10.1017/S0004972711003418S8
Finite trifactorized groups and pi-decomposability
The first author would like to thank the Universitat de Valencia for its warm hospitality and financial support during the preparation of this paper.Kazarin, LS.; MartĂnez-Pastor, A.; Perez Ramos, MD. (2018). Finite trifactorized groups and pi-decomposability. Bulletin of the Australian Mathematical Society. 97(2):218-228. https://doi.org/10.1017/S0004972717001034S21822897
Thermohydrodynamics of boiling in a van der Waals fluid
We present a modeling approach that enables numerical simulations of a boiling Van der Waals fluid based on the diffuse interface description. A boundary condition is implemented that allows in and out flux of mass at constant external pressure. In addition, a boundary condition for controlled wetting properties of the boiling surface is also proposed. We present isothermal verification cases for each element of our modeling approach. By using these two boundary conditions we are able to numerically access a system that contains the essential physics of the boiling process at microscopic scales. Evolution of bubbles under film boiling and nucleate boiling conditions are observed by varying boiling surface wettability. We observe flow patters around the three-phase contact line where the phase change is greatest. For a hydrophilic boiling surface, a complex flow pattern consistent with vapor recoil theory is observed.Peer reviewe
A reduction theorem for a conjecture on products of two Âż-decomposable groups
[EN] For a set of primes pi, a group X is said to be pi-decomposable if X = X-pi x X-pi' is the direct product of a pi-subgroup X-pi and a pi'-subgroup X-pi', where pi' is the complementary of pi in the set of all prime numbers. The main result of this paper is a reduction theorem for the following conjecture: "Let pi be a set of odd primes. If the finite group G = AB is a product of two pi-decomposable subgroups A = A(pi) x A(pi') and B = B-pi x B-pi', then A(pi)B(pi) = B(pi)A(pi) and this is a Hall pi-subgroup of G." We establish that a minimal counterexample to this conjecture is an almost simple group. The conjecture is then achieved in a forthcoming paper. (C) 2013 Elsevier Inc. All rights reserved.The second and third author have been supported by Proyecto MTM2010-19938-C03-02, Ministerio de Economia y Competitividad, Spain. The first author would like to thank the Universitat de Valencia and the Universitat Politecnica de Valencia for their warm hospitality during the preparation of this paper. He has been also supported by RFBR project 13-01-00469.Kazarin, LS.; MartĂnez Pastor, A.; Perez Ramos, MD. (2013). A reduction theorem for a conjecture on products of two Âż-decomposable groups. Journal of Algebra. 379:301-313. https://doi.org/10.1016/j.jalgebra.2013.01.017S30131337
Influence of Elastic Strains on the Adsorption Process in Porous Materials. An Experimental Approach
The experimental results presented in this paper show the influence of the
elastic deformation of porous solids on the adsorption process. With p+-type
porous silicon formed on highly boron doped (100) Si single crystal, we can
make identical porous layers, either supported by or detached from the
substrate. The pores are perpendicular to the substrate. The adsorption
isotherms corresponding to these two layers are distinct. In the region
preceding capillary condensation, the adsorbed amount is lower for the membrane
than for the supported layer and the hysteresis loop is observed at higher
pressure. We attribute this phenomenon to different elastic strains undergone
by the two layers during the adsorption process. For the supported layer, the
planes perpendicular to the substrate are constrained to have the same
interatomic spacing as that of the substrate so that the elastic deformation is
unilateral, at an atomic scale, and along the pore axis. When the substrate is
removed, tridimensional deformations occur and the porous system can find a new
configuration for the solid atoms which decreases the free energy of the system
adsorbate-solid. This results in a decrease of the adsorbed amount and in an
increase of the condensation pressure. The isotherms for the supported porous
layers shift toward that of the membrane when the layer thickness is increased
from 30 to 100 microns. This is due to the relaxation of the stress exerted by
the substrate as a result of the breaking of Si-Si bonds at the interface
between the substrate and the porous layer. The membrane is the relaxed state
of the supported layer.Comment: Accepted in Langmui
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