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The Mapei Group has been publishing a two-monthly magazine in Italian and English since 1991. Adriana Spazzoli was the editor-in-chief of the magazine called Realtà Mapei for 28 years until 2019. 160,000 copies of the magazine are distributed all over Italy and 22,000 copies of Realtà Mapei International are published worldwide.
Schematic diagram of a hollow fiber membrane, including a view of the membrane module and call outs for a cross section (top right), membrane transport (bottom left) and partial pressure of the solute. Modified by authors from [2] SEM cross-section of a polysulfone hollow fiber membrane fabricated by nonsolvent-induced phase separation.
In electronics, a decoupling capacitor is a capacitor used to decouple (i.e. prevent electrical energy from transferring to) one part of a circuit from another. Noise caused by other circuit elements is shunted through the capacitor, reducing its effect on the rest of the circuit.
An ion-exchange membrane is a semi-permeable membrane that transports certain dissolved ions, while blocking other ions or neutral molecules. [1] Ion-exchange membranes are therefore electrically conductive. They are often used in desalination and chemical recovery applications, moving ions from one solution to another with little passage of ...
Jules Bastien-Lepage, Pas Meche, 1882.An example of the shadows created by using umber in a painting. [2]Umber is a natural earth pigment consisting of iron oxide and manganese oxide; it has a brownish color that can vary among shades of yellow, red, and green.
In ultrafiltration, the molecular weight cut-off or MWCO of a membrane refers to the lowest molecular weight of the solute (in daltons) for which 90% of the solute is retained by (prevented from passing through) the membrane, [1] or the molecular weight of the molecule (e.g. globular protein) that is 90% retained by the membrane.
A zeolite membrane is a synthetic membrane made of crystalline aluminosilicate materials, typically aluminum, silicon, and oxygen with positive counterions such as Na + and Ca 2+ within the structure. Zeolite membranes serve as a low energy separation method.
Dialysis tubing. Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing [1] used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion.