نتایج جستجو برای: line barrier
تعداد نتایج: 498056 فیلتر نتایج به سال:
Time-varying coverage, namely sweep coverage is a recent development in the area of wireless sensor networks, where a small number of mobile sensors sweep or monitor comparatively large number of locations periodically. In this article we study barrier sweep coverage with mobile sensors where the barrier is considered as a finite length continuous curve on a plane. The coverage at every point o...
Atopic dermatitis (AD) is a common disease with worldwide prevalence, affecting up to 20% of children and 3% of adults. Recent evidence regarding pathogenesis has implicated epidermal barrier defects deriving from filagrin mutations with resulting secondary inflammation. In this report, the authors comprehensively review the literature on atopic dermatitis therapy, including topical and systemi...
Establishment of a human model of the blood-brain barrier has proven to be a difficult goal. To accomplish this, normal human brain endothelial cells were transduced by lentiviral vectors incorporating human telomerase or SV40 T antigen. Among the many stable immortalized clones obtained by sequential limiting dilution cloning of the transduced cells, one was selected for expression of normal e...
Differentiated human intestinal Caco-2 cells are frequently used in toxicology and pharmacology as in vitro models for studies on intestinal barrier functions. Since several discrepancies exist among the different lines and clones of Caco-2 cells, comparison of the results obtained and optimisation of models for use for regulatory purposes are particularly difficult, especially with respect to ...
The propagation of solitons in transmission lines periodically loaded with nonlinear capacitors is analyzed. It is demonstrated that the dependence of soliton amplitude on propagating velocity can be computed with a simple equation, valid for any arbitrary nonlinear capacitance. By means of an approximation to the nonlinear reactance, an analytical expression that completely describes soliton p...
the aim of this study was to investigate the barrier properties of cellulose nanocrystals-pvananocomposites. nanocomposite films with different filler loading levels (3, 6, 9 and 12% by wt) weredeveloped by solvent casting method. the effect of cellulose nanocrystals on the barrier properties ofthe nanocomposites was studied. to this end, moisture absorption, water vapor permeability (wvp),oxyg...
3 1 M ay 2 00 2 Noble internal transport barriers and radial subdiffusion of toroidal magnetic lines
Internal transport barriers (ITB's) observed in tokamaks are described by a purely magnetic approach. Magnetic line motion in toroidal geometry with broken magnetic surfaces is studied from a previously derived Hamiltonian map in situation of incomplete chaos. This appears to reproduce in a realistic way the main features of a tokamak, for a given safety factor profile and in terms of a single ...
The exact location of the drip lines is one of the most stringent tests of nuclear structure models. The predictions for stability of nuclei along the proton drip line can be tested up to very heavy nuclei. Beyond the proton drip line, the large Coulomb barrier and the angular momentum barrier can lead to very long lifetimes for proton-unbound nuclei ~proton radioactivity! @1#. Several of these...
Background and purpose : Instalation of protective barrier against diagnostic x-ray is generally done based on the recommendations of NCRP49. There are analytic methods for designing protective barriers howerer, they lack sufficient efficiency and considering the NCRP49 reports, designing mechanical protective barrier in order to protect the initial x-ray radiation and absorption of the ray q...
Introduction Nasal mucus is the first line defense barrier against various allergens. Proteins are functional molecules in mucus and have different roles especially in immune response. Apolipoproteins are plasma proteins that are mainly involved in lipid metabolism, but also have anti-inflammatory properties. The role of this study was to identify apolipoproteins in nasal mucus of allergic rhin...
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