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Rahman, E.L.
Rahman and E.L.
Abdalla, and E.L.
Rahman, E.L.
Rolfes and E.L.

The result shows that as for steel skeleton polythene plastic composite pipe and reinforced plastic composite pipe, Panhandle A formula and Drew Et al Formula are recommended respectively to calculate the on-way hydraulic computation.
Relative Errors of Calculation Formulas Sequence Number Name of formula Average relative error Steel skeleton plastic composite pipe Reinforced plastic composite pipe 1 Miller Formula 14.658% 11.543% 2 Nikuradze Formula 14.783% 11.549% 3 Anderson formula 17.934% 9.952% 4 Jiaqi Dai Formula 22.699% 4.437% 5 Less Formula 16.897% 9.558% 6 Drew et al.
Formula 34.133% 2.907% 7 IGT Formula 20.122% 6.330% 8 Towler Improved Formula 19.980% 6.451% 9 Panhandle A Formula 8.854% 20.225% 10 Panhandle B Formula 44.057% 51.577% 11 Brill et al Formula 16.416% 9.924% Conclusions For steel skeleton polythene plastic composite pipe, the relative errors of Miller Formula, Nikuradze Formula, Panhandle A Formula and Brill Et al Formula are respectively 14.658%, 14.783%, 16.416% and 8.854%, therefore Panhandle A formula is recommended to calculate the on-way hydraulic computation of steel skeleton polythene plastic composite pipe.
As for reinforced plastic composite pipe, the relative errors of Jiaqi Dai formula, Drew Et al formula, IGT formula and Towler improved formula are respectively 4.437%, 2.907%, 6.330% and 6.451%, therefore Drew Et al formula is recommended to calculate the on-way hydraulic computation of reinforced plastic composite pipe.
El-Emam: Journal of Canadian Petroleum Technology.

., Dey et al. [3] and Pascoe [4].
Some research have studied classification of context using audio individually, e.g., Clarkson classified context by using hidden Markov models (HMMs)[6] ; El-Maleh et al. classified five environmental noise classes (a car, street, babble, factory, and bus) using line spectral features and a Gaussian classifier [7]; Eronen AJ et al used plenty of audio features, in which the most important are MFCC and ΔMFCC[8].
References [1] Abowd G D, Dey A K, Brown P J, et al.
El-Maleh, A.
[8] Eronen A J, Peltonen V T, Tuomi J T, et al.

Aggoun, et al.: ACI Mater.
El-alfi, A.
Abu-el-naga: Ceramics-Silikaty.
Shin, et al.: Magazine Concr.
Charpentier, et al.: J.

Experimental and Numerical Studies of Viscoelastic Behavior of Bituminous Mixture with a High Rate of Reclaimed Asphalt Pavement, Dune Sand and Lime Ilhem Borcheni1,a*, Tesnim Kraiem2,b, Mondher Neifar3,4,5,c, Jamel Neji1,d 1University of Tunis El Manar, National Engineering School of Tunis, Laboratory of Materials, Optimization, and Environment for Sustainability, B.P. 37 Le Belvédère, Tunis, Tunisia. 2University of Tunis El Manar, National Engineering School of Tunis, Laboratory of Applied Mechanics and Engineering (LR-MAI), B.P. 37 Le Belvédère, Tunis, Tunisia. 3Applied Mechanics and Systems Research Laboratory, Polytechnic School of Tunisia University of Carthage, Tunis, Tunisia. 4Department of Civil Engineering, Higher Engineering National School of Tunis University of Tunis, Tunis, Tunisia. 5On secondment to Umm Al Qura University, College of Engineering at Al-Qunfudah, Al-Qunfudah, Kingdom of Saudi Arabia.
El Euch Khay, A.
El Euch Khay, and A.
El Euch Khay, and J.
El Euch Khay, J.

EL-Wazery1,a, A.
EL-Desouky1,b, O.
Also, Mishina et al [13] studied the fabrication method of another constituent, ZrO2/AISI316L FGMs for use in joint prostheses and their mechanical and biotribological properties were evaluated through fracture toughness, bending strength, and wear resistance studies.
He et al [14] used fi{TTP}-1279 ve-layered alumina–iron FGMs that were fabricated via a simple route of die pressing and pressureless sintering.
Shahrjerdi et al [15] have demonstrated the functionally graded metal-ceramic composite fabricated via pressure-less sintering.

Al-Bataineh, A.
El Ghoul, N.
El Mir, Structural and optical properties of nanoparticles (V, Al) co-doped ZnO synthesized by sol–gel processes, Superlattices and Microstructures 64 (2013) 451‑459
El-Sayed, Enhanced ferromagnetic and photocatalytic properties in Mn or Fe doped p-CuO/n-ZnO nanocomposites, Advanced Powder Technology 30 (2019) 2841-2850
Gautam, Structural, optical and thermoelectric properties of Al-doped ZnO thin films prepared by spray pyrolysis, Surfaces and Interfaces 19 (2020) 100504.

H.Abd El-Lateef et al. had synthesized inhibitors from sunflower oil mixed with a commercially available surfactant with a good result.
Al-Ghazal, S.
Al-Driweesh, A.
El Yadini, H.
El-Lateef, L.

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.