Inserting porous media into the micro-scale combustor space could enhance heat recirculation from flame zone, and thus extend flammability limits improve stability. In context of micro-combustors, pore size is comparable to characteristic length. It insufficient treat medium as a continuum with volume-averaged model (VAM). Therefore, pore-scale (PSM) developed consider detailed structure better...

The filamentous growth form is an important strategy for soil microbes to bridge air-filled pores in unsaturated soils. In particular, fungi perform better than bacteria in soils during drought, a property that has been ascribed to the hyphal growth form of fungi. However, it is unknown if, and to what extent, filamentous bacteria may also display similar advantages over non-filamentous bacteri...

Image-based pore-scale modeling is an important method to study multiphase flow in permeable rocks. However, many rocks, the pore size distribution so wide that it cannot be resolved a single pore-space image, typically acquired using micro-computed tomography (micro-CT). Recent multi-scale models therefore incorporate sub-voxel porosity maps, created by differential micro-CT imaging of contras...

Pore structure is the key factor affecting reservoir accumulation and enrichment behavior. Due to complex mineral components pore of shale oil reservoirs strong heterogeneity, it necessary explore micro-pore characteristics inter-salt shale. In this study, in order qualitatively quantitatively analyze reservoirs, as well evaluate composition its spatial distribution characteristics, three sampl...

X-ray microfocus computed tomography (micro-CT) is recently put forward to qualitatively and quantitatively characterize the internal structure of porous materials. However, it is known that artifacts such as the partial volume effect are inherently present in micro-CT images, thus resulting in a visualization error with respect to reality. This study proposes a validation protocol that in the ...

Porous bone tissue engineering scaffolds were fabricated using both nano hydroxyapatite (nano HA) powder (20 nm average particle size) and micro HA powder (10 microm average particle size), resulting in sintered scaffolds of 59 vol% porosity and 8.6 +/- 1.9 microm average grain size and 72 vol% porosity and 588 +/- 55nm average grain size, respectively. Scanning electron microscopy was used to ...

Nanoporous Pt/TiO2 micro-particles were synthesized via an aerosol assisted co-assembly (AACA) route. Aerosol droplets were produced from a colloidal mixture of 5 nm Pt and 20 nm TiO2 nanoparticles, which formed spherical micro-aggregates of Pt and TiO2 with average diameter of around 1.2 μm. The resulting composite micro-particles have very open structure with pore sizes ranging from 20 to 200...

Abstract Compared with low-permeability oil reservoirs, tight reservoirs have more nanopores, complex pore structure, and obvious nonlinear seepage characteristics. Under the macro-scale channel flow, influence of micro-forces is often ignored, but micro-nano-scale become main factors affecting flow. The flow different from requires force between fluid micro-nano tubes. article conducts thresho...

The micro morphology of limestone sorbent is a key for improving the SO2 removal efficiency in the coal-fired power plant. The tube furnace system was built for imitating the indirect desulfurization reaction in traditional boiler atmosphere (65%N2, 15%CO2, 4.7%O2, 15%H2O, 0.3%SO2) and the direct desulfurization reaction in oxygen-fired atmosphere (80%CO2, 4.7%O2, 15%H2O, 0.3%SO2). The reacted ...