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It has been established that at surface of sample there is big variety of elements: H, N, O, Na, Mg, Al, Si, etc.
[4] Melnikov E.L.

El-Nafaty, S.
Al-Najar, F.M.

Morar, A.L.
Kiss, Particle Charging in Industrial Electrostatics, in: Proceeding of Conf. on El.st. 8 (1997) 88-92

The starting reagent grade chemicals (in the powder form) including H3BO3, CaCO3, Al(OH)3, Fe2O3 and CeO2 were used as glass constituents.
El-Kashif, Effect of gamma radiation on ultraviolet, visible and infrared studies of NiO, Cr2O3 and Fe2O3-doped alkali borate glasses, J.

[13] Gama BA, Islam SMW, Rahman M, Gillespie Jr JW, Bogetti TA, Cheeseman BA, et al.
[20] El Sayed T, Mock Jr W, Mota A, Fraternal F, Ortiz M.

According to the model proposed by Will et al. [13] the deposited mass for constant voltage and constant concentration conditions is calculated as follows: 2 0 0 e 0 0 (t) 2 d d 2f A c U m t k k k µ = � + + with DS D 1 k A � � � = � (2) d0 – distance between the electrodes [m] A – surface area of the substrate [m2] c0 – starting concentration of particles [kg/m 3] µe – electrophoretic mobility of the particles [m 2/(Vs)] �D – dielectric constant of deposit �S – dielectric constant of suspension � D – density of the deposited layer [kg/m 3] Further, due to the findings of Hamaker [12] the deposited mass m(t) is linearly proportional to the charge passed Q(t).
El-Sherik, P.

Wardany et al. [1] used a vibration signature analysis for tool condition monitoring in drilling of cast iron.
El-Wardany, D.

Ng, A.L.
Lu, E.L.

Abou-El-Hossein , K.
[7] Emel Kuram , Babur Ozcelik, Multi-objective optimization using Taguchi based grey relational analysis for micro-milling of Al 7075 material with ball nose end mill, Measurement 46 (2013) 1849–1864

Vol.33(2008), p.655 [12] E.L.
Trans. (1998), p.2957 [14] A.L.