English to Portuguese Science Chemistry; Chem Sci/Eng

The "root mean square slope angle (°)" indicates to a slope angle of a peak in a sampling length (l) of the material.

In the case of removing the activated leukocyte-activated platelet complex, if the root mean square slope angle of the surface of the water-insoluble carrier is too small, the adhesive property between the materials and cells becomes low.

Thus, the root mean square slope angle is required to be not less than 50°.
Further, if the root mean square slope angle of the surface of the water-insoluble carrier is too large, the frequencies for the cells to recognize the materials become high, but since a local portion thereof has a steep structure, the adhesive property of cells to the materials becomes weaker. Thus, the slope angle is required to be 85° or less.
That is, it is necessary that the root mean square slope angle of the surface of the water-insoluble carrier is 50 to 85°, more preferably 65 to 75°.