This is interpreted as meaning that if flotation is impossible the oil has not spread over the coal surface ( c ) in case ( b ) if a suitable surface‐active reagent is already adsorbed at the coal surface the oil spreads spontaneously over the surface and air can displace water at the ...
meaning that it is a metal material which is not based on a noble metal. In the preferred embodiments the outer surface comprises the steel, stainless steel, nickel, nickel alloy, cobalt, and cobalt alloy of the anode base body, or in another embodiment a non-noble plating such as nickel...
Whether standards are established judgementally or statistically – or, as in most contexts, a mixture of the two -satisfying public and practitioner opinion about equivalence is not easy. Common grade scales signify common achievement in diverse subjects, yet questions arise as to the meaning of ...
4). Therefore, the particles suspended in the sample had a certain surface activity, meaning they could have bound to the surface molecules, such as phenolic compounds, similarly to the case we reported previously on hemicelluloses extracted from softwood (Lahtinen et al. 2019; Valoppi et al....
Any polymer permeable to water but impermeable to solutes as previously defined may be used. Examples include cellulose acetate having a degree of substitution, D.S., meaning the average number of hydroxyl groups on the anhydroglucose unit of the polymer replaced by a substituting group, up to ...
where the substituents independently of one another have the following meaning: R is hydrogen, halogen, OH, C1-C20-alkyl, C1-C20-alkoxy, C1-C20-alkoxyalkyl, C1-C20-hydroxyalkoxy, NR1R2, or a radical of the formula Ia 2 R1 and R2 are hydrogen, C1-C20-alkyl, C6-C12-aryl which may ...
Sterols as such, or long-chain sterol esters, meaning an ester formed from a sterol, may also be used as the coating material. In either case, the sterols may be of animal origin (e.g., cholesterol) or of plant origin (e.g., ergosterol). ...