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Optical, Structural and Spectroscopic Characterization of ZnS Nanocrystals Embedded in KBr Single Crystal Matrix Grown by Czochralski Method Soria Zeroual1,a*, Mohammed Sadok Mahboub1,b, Ghani Rihia1,c, Mourad Mimouni1,d, Mebrouk Ghougali1,e, Miloud Sebais2,f 1LEVRES Laboratory, Department of Physics, Faculty of Exact Sciences, University of El-Oued, P.O.Box 789, El-Oued, 39000 Algeria. 2Crystallography Laboratory, Physics Department, Faculty of Exact Sciences, University of Constantine 1, Route Ain El Bey, Constantine 25000, Algeria.
For these crystals, group theory predicts the following k = 0 lattice phonons: one Al mode which is both IR and Raman active, one E1 mode which is both lR and Raman active, two E2 modes which are Raman active, and two silent B1 modes.
The lower E21 mode can be confused with the KBr mode seen at 61.16cm-1, this mode was found at 69cm-1 by Schneider et al. [38] and we assign the observed resonance at 324cm-1 to the E22 mode.
Porambo, A.L.
Zhang et al., X-ray absorption spectroscopy of the cubic and hexagonal polytypes of zinc sulfide, Physical Review B, 66 (2002) 24

Fig.7 Parámetros seleccionados para el comportamiento de los catadores Analysis and Results A.
Vásquez-Reyes, «Importancia, genética y evolución del café en Honduras y el mundo», vol. 9, 2020
Kharaba et al., «Caffeine Consumption among Various University Students in the UAE, Exploring the Frequencies, Different Sources and Reporting Adverse Effects and Withdrawal Symptoms», J.
Chávez, «Evaluación sensorial de diferentes marcas comerciales de café instantáneo utilizando el método CATA», J.
Imbachi, «Calidad física, sensorial y composición química del café cultivado en el departamento del Huila», Rev.

Al-Mg-Er, Al-Zn-Mg-Er and Al-Mg-Li-Zr-Er alloys have successfully developed in the same direction[5-7].The properties of Al alloys with Er depend on solution at elevated temperature, also some expecting phases formed during subsequently solidification, all related with thermodynamic properties.
From the experimental data available at the time, R.Hultgren el.at[19]found an average value for metallic systems:τ00 = 3000 ± 1000 K. with a view to a spot of rare earth element, simultaneity the melt point of Al is relative low, accordingly τ00 value in our work is confirmed as 2000K.
[22] G.Cacciamani, P.Riani, et al.
[23] A.F.NORMAN, P.B.PRANGNELL et.al.
[25] K.E.Knipling et al:Z.Metallkd.97(2006)246.

From Fig. 2b, it can be seen that the oxides formed on the surface of aluminum substrates were mainly composed of Cu, Al and O, which has a good potential to form CuO and Al2O3.
Alloys Comp Vol. 345 (2002), p. 196 [2] A.L.
Technol Vol. 130 (2000), p. 195 [3] A.L.
Voevodin, A.L.
El-Shobaky: Appl.

., Al-Thabaiti, S.
Al-Youbi and A.
El-Sherbiny: Carbohydr.
El-Toni, S.

Indention method was used to calculate the fracture toughness according to the formula of Lankford et al. [18].
The impression size and the radial crack length were carefully measured and the fracture toughness was calculated using the equation suggested by Lankford et al. [18].
Barsoum and T.El-Raghy: Metall.
El-Raghy, M.W.

Bayol et al. [12] has studied the inhibitory effect of the Schiff bases N, N'-bis (salicylidene) -1,2-etilenodiamine (Salen), N, N'-bis (5-metoxidosalicylidene) -1,2 - ethylenediamine (MeO-Salen) and N, N'-bis (5-nitrosalicylidene) -1,2-ethylenediamine (Salen-NO2) under carbon steel in HCl solution 1.0 mol L-1.
Abou El Makarim, A.
El Hajjaji: Progress Organic Coating Vol. 48 (2003), p. 63
El-Baradie, G.K.

Abd El Rehim, H.H.
El-Ziady, Mater.
EL Achouri, M.R.
Izquierdo, et al.

The corrosion resistance of electroless (EL) Ni–low B coatings, obtained using an alkaline borohydride-reduced electroless plating bath, with varying concentrations of NaBH4 in 3-5%NaCl, was evaluated.
The rate of deposition, boron content and the size of the nodules of the EL Ni–low B coatings were increased while the crystallinity of the coating was decreased with increasing concentration of NaBH4.
The change in chemical composition and decrease in crystallinity did not seem to have any influence on the corrosion resistance of the EL Ni–low B coatings of the present study, as opposed to the nodular growth with a columnar structure which had a profound effect [6].
The morphology and surface of electroplating nanoparticles based on nickel were investigated using the «semi-contact» method on a PHYWE atomic force microscope, a type of Tar probe 190 Al-G.

El-Aassar, G.
El fawal, N.
El-Deeb, H.
Shan et al (2018).