نتایج جستجو برای: preformed particle gels
تعداد نتایج: 201024 فیلتر نتایج به سال:
While the low thermal conductivities of silica aerogels have made them of interest to the aerospace community as lightweight thermal insulation, the application of conformal polymer coatings to these gels increases their strength significantly, making them potentially useful as structural materials as well. In this work we perform multiscale computer simulations to investigate the tensile and c...
We solve the Lippmann-Schwinger equation describing one-dimensional elastic scattering of preformed pairs ~e.g., bipolarons! off a short-range scattering center, and find the two-particle transmission through a thin potential barrier. While the pair transmission is smaller than the single-electron transmission in the strongcoupling limit, it is remarkably larger in the weak-coupling limit. We a...
The electron hosing instability in the blow-out regime of plasma-wakefield acceleration is investigated using a linear perturbation theory about the electron blow-out trajectory in Lu et al. [in Phys. Rev. Lett. 96, 165002 (2006)10.1103/PhysRevLett.96.165002]. The growth of the instability is found to be affected by the beam parameters unlike in the standard theory Whittum et al. [Phys. Rev. Le...
Polymeric nanoparticles have been extensively studied as particulate carriers in the pharmaceutical and medical fields, because they show promise as drug delivery systems as a result of their controlled- and sustained-release properties, subcellular size, and biocompatibility with tissue and cells. Several methods to prepare nanoparticles have been developed during the last two decades, classif...
The propagation of an intense relativistic electron beam through a gas that is self-ionized by the beam's space charge and wakefields is examined analytically and with 3D particle-in-cell simulations. Instability arises from the coupling between a beam and the offset plasma channel it creates when it is perturbed. The traditional electron hose instability in a preformed plasma is replaced with ...
The mechanism of replication of the double-stranded RNA genome of reovirus has been analyzed by tracing the fate of the parental double-stranded RNA genome and by determining whether the complementary strands, which comprise the progeny double-stranded RNA, are synthesized simultaneously or sequentially. The results indicate that the parental double-stranded RNA is conserved as the original dup...
October 14, 2009 Type Package Title Distributions to be used for GAMLSS modelling. Version 3.0-1 Date 2009-14-09 Author Mikis Stasinopoulos , Bob Rigby with contributions from Calliope Akantziliotou, Gillian Heller, Raydonal Ospina and Nicoletta Motpan. Maintainer Mikis Stasinopoulos <[email protected]...
Abstract: Aim: The main aim of present study is to formulate cubosomes containing curcumin. Curcumin a BCS class IV drug which has clinically proven good anti-bacterial property. Materials and Methods: Cubic nanoparticles were prepared by hydrotrope dilution method. Cubosomes formulated with the glyceryl monooleate pluronic F-127 as lipid surfactant respectively, obtained formulations character...
Mucosa-adhesive gels can be used as a useful mean of delivering drugs to or via mucosal membranes, and in particular buccal mucosa. Carbomers are among the best mucosa-adhesive materials known. The aim of this study was to compare the results obtained from the mucosa-adhesive strength of aqueous gels containing Carbomers, either alone or in combination, to the data obtained from assessing the d...
resin transfer molding (rtm) is a composite manufacturing process. a preformed fiber is placed in a closed mold and a viscous resin is injected into the mold. in this paper, a model is developed to predict the flow pattern, extent of reaction and temperature change during filling and curing in a thin rectangular mold. a numerical simulation is presented to predict the free surface and its inter...
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