Wetting Behavior of Hydrophobic Dust and Dust-Fall Theory of Fine Droplets

Abstract

The wetting behavior of droplets on the surfaces of hydrophobic coal slices is measured with a CCD camera and simulated with the volume of fluid (VOF) numerical method. Experimental results reveal that the contact angle changes exponatially with time and the wettability decreases with the increasing rough microstructures of coal slice surfaces. There is a good agreement between numerical simulations and experimental results. Meanwhile, it is found that droplet with a smaller volume can enhance the hydrophilic. The dust-fall theory of fine droplets is useful to improve the wettability of dust and enlarge the contact ratio between dust and droplets, which can help to design wet-type dust-fall equipment and provide new way for the control of respiratory dust.

Nanodeserts: A Conjecture in Nanotechnology to Enhance Quasi-Photosynthetic CO2Absorption

“…where 3 ( ) represents the three-dimension groundwater DIC dynamics. Equation 7is the famous Riccati Equation, where the parameters , , , , and are allowed to be changing with [15][16][17][18]. Equations (2) and (4) are both simple forms of (7) and hence are also special forms of the famous Riccati Equation.…”

“…Differential, difference, and dynamic equations are used for quantitative analysis in the engineering and natural sciences [15][16][17][18]. This suggests us trying to develop some differential equations to describe the dynamics of CO 2 dissolution and absorption beneath deserts.…”

Intraspecific differences in plant functional traits are related to urban atmospheric particulate matter

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Leaf Functional Traits Differentiation and Its Trade-off Strategies of Urban Plant are Related to Atmospheric Particulate Pollution

“…Urban vegetation in London area can reduce the PM10 content in the air by 0.7-2.6% (Zhang 1997;Tallis et al, 2011;Qiu et al, 2018;She et al, 2020). At present, the research of plant dust deposition mainly focuses on the comparison of dust deposition capacity, dust deposition mechanism, dust deposition composition, dust deposition characteristics and so on, and has obtained many research results (Mctainsh et al, 1997;Nowak et al, 2006;Hope et al, 2010;Kou et al, 2015). It is worth noting that the retention of atmospheric particles in plant leaves will affect its growth and development?…”