| http://www.w3.org/ns/prov#value | - Accordingly, it is in the hope of being put into practice under the conditions that the organicpolymer membrane is inapplicable, and its development is now underway.In case of applying various kind of zeolite, sol-gel, CVD or other films having innumerable minuscule pores for gas separation, some degree of mechanical and thermal strengths are required, but efficiency is reduced an the thickness be
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