Segregation of hydraulically suspended particles in inclined channels

2006 ◽  
Vol 61 (22) ◽  
pp. 7269-7278 ◽  
Author(s):  
D. Laskovski ◽  
P. Duncan ◽  
P. Stevenson ◽  
J. Zhou ◽  
K.P. Galvin
Keyword(s):  
Suspended Particles ◽  
Inclined Channels

Importance of desorption process from Abukuma River’s suspended particles in increasing dissolved 137Cs in coastal water during river-flood caused by typhoons

Chemosphere ◽  
2021 ◽  
pp. 130751
Author(s):  
Hyoe Takata ◽  
Yoshifumi Wakiyama ◽  
Takuya Niida ◽  
Yasunori Igarashi ◽  
Alexei Konoplev ◽  
...  
Keyword(s):  
Coastal Water ◽  
Suspended Particles ◽  
Desorption Process ◽  
River Flood

scholarly journals Design of Thermal Insulation Materials with Different Geometries of Channels

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2217
Author(s):  
Daniela Șova ◽  
Mariana Domnica Stanciu ◽  
Sergiu Valeriu Georgescu
Keyword(s):  
Thermal Conductivity ◽  
Porous Structure ◽  
Base Material ◽  
Cost Effective ◽  
Heat Radiation ◽  
Average Temperature ◽  
Temperature Regimes ◽  
The Face ◽  
Inclined Channels ◽  
Air Channels

Investigating the large number of various materials now available, some materials scientists promoted a method of combining existing materials with geometric features. By studying natural materials, the performance of simple constituent materials is improved by manipulating their internal geometry; as such, any base material can be used by performing millimeter-scale air channels. The porous structure obtained utilizes the low thermal conductivity of the gas in the pores. At the same time, heat radiation and gas convection is hindered by the solid structure. The solution that was proposed in this research for obtaining a material with porous structure consisted in perforating extruded polystyrene (XPS) panels, as base material. Perforation was performed horizontally and at an angle of 45 degrees related to the face panel. The method is simple and cost-effective. Perforated and simple XPS panels were subjected to three different temperature regimes in order to measure the thermal conductivity. There was an increase in thermal conductivity with the increase in average temperature in all studied cases. The presence of air channels reduced the thermal conductivity of the perforated panels. The reduction was more significant at the panels with inclined channels. The differences between the thermal conductivity of simple XPS and perforated XPS panels are small, but the latter can be improved by increasing the number of channels and the air channels’ diameter. Additionally, the higher the thermal conductivity of the base material, the more significant is the presence of the channels, reducing the effective thermal conductivity. A base material with low emissivity may also reduce the thermal conductivity.

Natural alumina/silica suspended particles in water to enhance ofloxacin degradation with UVA-H2O2 driven by surface chemistry

2021 ◽  
Vol 412 ◽  
pp. 125259
Author(s):  
Yulun Nie ◽  
Xiaofei Sun ◽  
Miao Wang ◽  
Xike Tian ◽  
Chao Yang ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Suspended Particles
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