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Tang et al., [2], reported that plant waste containing lignocelulloses from agricultural and forestry is reproducible and cheap resources, which can be used as raw materials to synthesize good grade activated carbon.
Amongst numerous chemical activating agents, ZnCl2 and H3PO4 are widely used for lignocellulosic materials due to good dehydration effect as claimed by Martin-Gonzales et al., [11].
According to Ozdemir et al. [18], high grade of activated carbon is those having iodine number values higher than 900 mgg-1.
Blanco et al., [24] stated that the sharpness of isotherm in the range of 0.28

El-hamouz and H.S.

Reddy, Development in the processing and properties of particulate Al-Si Composites, J.
Abdulwahed, Some mechanical properties of metal-nonmetal Al-SiO2 particulate Composites, J.
[11] Pio, L.Y., Sulaiman, S., Hamouda, A.M. and Ahmad, M.M.H.M, Grain refinement of LM6 Al-Si alloy sand castings to enhance mechanical properties.
[16] El-Amoush, A.S, Effect of aluminium content on mechanical properties of hydrogenated Mg-Al magnesium alloys.

Bunetel, et al.: Rev Chir Orthop Répar Appar Mot Vol. 74 (1988), p. 493 [2] A.
Chevalier, et al.: J Mater Sci Mater Med Vol. 14 (2003), p. 1089 [3] M.
Delgado, et al.: J Control Release Vol. 83 (2002), p. 353 [4] M.B.
Ors, et al.: Biomaterials Vol. 20 (1999), p. 711 [5] A.
El-Ghannam, K.

Liu, et al.: Surf.
Huwald, et al.: J.
El.
Trygg, et al.: Phys.
Speck, et al.: Appl.

This investigation studied the corrosion-fatigue behaviour of Al 5083-H111 welded using ER5356 wire.
For the Al-Mg and Al-Mg-Mn 5XXX series Al alloys, the code recommends that the value of DsC should be reduced by up to one detail category to compensate for the effect of the corrosive environment, which yields a downgraded value of 70 MPa for DsC.
[7] E.L.
Ramesh, Strengthening mechanisms in an Al–Mg alloy, Mat.
Martin, Fatigue behaviour of an arc welded Al–Si–Mg alloy, Scripta Mater. 57(4) (2007) 349-352

In other words, Tahri et al. (2013) gave a simple understanding which is biodegradation known as a process to break down the organic chemicals by essential agents such as microorganisms concerning their biological action.
However, face masks do not systematically analyze the impact of the spread on COVID-19 as claimed by Mitze et al. (2006).
Dussud et al. (2018) has proved that there are four distinct polymers that has an abundance of bacterial community on the surfaces and each of them are different from one another.
Adhikari et al. (2016) claimed a few benefits from OM to the soil that OM decomposes to provide nutrients and make a good addition for the sandy soil as it improves water retention.
[3] Tahri, N., Bahafid, W., Sayel, H., & El Ghachtouli, N. (2013).

Binary Fe and Mn Oxide Nanoparticle Supported Polymeric Anion Exchanger for Arsenic Adsorption: Role of Oxides, Supported Materials, and Preparation Solvent Antika Pranudta1,a, Pornsawai Praipipat2,4,b, Medhat Mohamed El-Moselhy3,c and Surapol Padungthon1,4,d * 1Department of Environmental Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand. 2Department of Environmental Science, Khon Kaen University, Khon Kaen, 40002, Thailand. 3Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr city, Cairo, 11884, Egypt. 4Research Center for Environmental and Hazardous Substance Management (EHSM), Khon Kaen University, Khon Kaen, 40002, Thailand.

In this study, the behavior of nitriding in ultra low carbon steels containing Cr and/or Al and/or V are investigated.
However, the steel containing additional Al (1Cr-1Al-0.3V steel) had an extremely high hardness of 1000Hv and the base steel had the lowest hardness value of 400Hv.
steel YP(MPa) TS(MPa) El(%) base 364 458 29.1 0.5Cr 376 460 26.1 1Cr 339 452 33.5 1Cr-0.3V 357 473 31.2 1Cr-1Al-0.3V 364 452 30.9 Table 2 Mechanical properties of hot rolled steel sheets.
Summary Cu-added ultra low carbon steels added Cr, Al and V, respectively or combined, were nitrided, and following results were obtained
al stre ss /M P a R e sidu al stre ss /M P a R e sidu al stre ss /M P a R e sidu al stre ss /M P a Fig.7 N content profile of 1Cr steel after nitriding.

Empowering Leadership (EL) Empowerment is a concept that refers to a “paradigm change in the managerial focus from control to autonomy in organizational research” [25,25].
‏ [13] Al-Ansari, Y.
M., & Al-Hawari, M.
[76] Al-Hawari, M.
M., Abukhait, R., & Al-Hawari, M.

Manufacturing Method and Thermal Properties of Open-Cell Type Aluminum Foam by Replication Casting Process Jongmin Kim1,a, Taekyu Ha1,b, Beomsuck Han2,c and Youngjig Kim1,d* 1Department of Advanced Materials Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Republic of South Korea 2Korea Automotive Technology Institute, 303, Pungse-ro, Pungse-myeon, Dongnam-gu, Cheonan-si, Republic of South Korea awin96win96@naver.com, bhlch90@gmail.com, cbshan@katech.re.kr, dyjk1122@skku.edu Keywords: Al foam, Open-cell type, Replication casting, Thermal property, Hot plate method Abstract.
Sun, A novel sintering-dissolution process for manufacturing Al foams, Scripta Mater. 44(1) (2001) 105-110
[11] E.L.