Furthermore, gas sensing experiments indicated that a superior gas-sensing property of aligned WO3·H2O nanorods occurs over that of the monodispersed WO3·H2O nanorods, which is likely attributed to large effective surface areas and abundant accessible diffusion channels provided by this special structure for sufficient gas reactions.
The TiO2@PANI core-shell NWs are grown directly on highly conductive carbon cloth, which not only give efficient charge transport and accessible diffusion of the electrolyte, but also provide large surface area and active sites for redox reaction as well as good strain accommodation.
In view of later engineering applications, it appears desirable to tailor the mesoporous properties and thus gain a large surface area accessible by diffusion.
It is well-known that large interconnected pores enable excellent mass transfer by convection to the interactive or reactive sites immobilized in the porous structure that are accessible by diffusion.
To silence the transcripts in the salivary glands, at least 8-9 timoremore dsRNA (~1.6-1.8 ~1.6-1.8osquito) than normal (~0.2 μg) was injected [ 9] in order to obtain a better silencing efficiency in this body pert, which is less accessible to diffusion of dsRNA fromosquitomolymph.
In addition to εeff and ε, a diffusion accessible porosity, εdiff, that takes into account the possibility of diffusion into dead-end pores also has been identified.
The improved electrochemical performance is attributed to the large specific surface area and porous nature of the flower-like Co3O4 structure which is more convenient and accessible for electrolyte diffusion and intercalation of Li+ ions into the active phases.
In addition, the large specific surface area and porous nature of the Co3O4 nanosheets are also very convenient and accessible for electrolyte diffusion and intercalation of Li+ ions into the active phases.
The quadratic relationship between dynamically accessible volume and diffusion coefficient, which has been observed for some other models, has been confirmed for high values of DAV, whereas smaller diffusion coefficients than those predicted by the model were shown for DAV values lower than 0.1 independently of the chain length.
According to this model, the main parameters describing the long-term dissolution of the glass are ηR, the product of the diffusion accessible porosity η and the retardation factor R, and the apparent diffusion coefficient Dapp of dissolved silica in clay.
We performed column experiments using a synthetic porous medium, in which a substantial part of the sorption sites was concentrated in regions within small grained aggregates that were accessible only by diffusion, a feature often found in natural soils and sediments.
