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Adequately managing the interaction between humans and the biosphere is essential to ensure human survival (Borucke et al., 2013).
Thus, some systematic measures must be adopted to monitor the overall extent to which human activities affect the earth (Galli et al., 2012).
Therefore, regardless of whether it is used for timber or fuelwood, the forest is not separately dealt with when calculating carbon uptake (Borucke et al., 2013).
The group of footprint family indicators is such an accounting system (Borucke et al., 2013; Galli et al., 2012).
References [1] Barnosky, A.D., Hadly, E.A., Bascompte, J., Berlow, E.L., Brown, J.H., Fortelius, M., Getz, W.M., Harte, J., Hastings, A., Marquet, P.A., Martinez, N.D., Mooers, A., Roopnarine, P., Vermeij, G., Williams, J.W., Gillespie, R., Kitzes, J., Marshall, C., Matzke, N., Mindell, D.P., Revilla, E. & Smith, A.B. in: Approaching a state shift in Earth’s biosphere.

Qu et al. [5] obtained good results with 40 vol% oxide content whereas 16 vol% and 32 vol% represent a composition comparable to typical WC-Co hardmetals with 10 wt% Co and 20 wt% Co respectively.
El Eskandarany, Fabrication and characterizations of new nanocomposite WC/Al2O3 materials by room temperature ball milling and subsequent consolidation, J Alloy Compd 20 (2005) 2845

Elemental analysis was performed by Element Vario EL organic element analyzer.
Al-Ghannam and J.M.
Al-Rawi: Fuel Vol. 60 (1981), p. 1043-1046.

For the stress-strain behavior of unconfined and confined concrete, the model proposed by Mander et al. [14] was used for the specimens X0-REF1, X26-REF2 and X26-M.
The lateral load capacity of the specimen X43-M-CFRP2 was calculated by using FRP confined concrete behavior (compressive strength and corresponding strain) as described by Ilki et al. [15].
El-Salakawy, B.

The composition of work piece material is Si 0.70%, Fe 0.28%, Cu 0.21%, Mn 0.12%, Mg 0.99%, Cr 0.6%, Zn 0.088%, Ti 0.047% and remaining Al 97.35% .
K, Noor M.M., Zuki N.M, Rahman M.M, Rejab M.R.M, Daud R.K, Abou-El-Hossein.
R: Multi response optimization of machining parameters of drilling Al/SiC metal matrix composite using grey relational analysis in the Taguchi method, International Journal of Advanced Manufacturing Technology, Vol.37, pp.250–255, 2008.

Burland et al [2] proposed the concept of settlement reducing pile foundation in 1997, and many scholars have made further research theoretically.
In test study, Chi et al [6] conducted two tests of composite foundation with 9 piles in order to investigate the working mechanism of composite foundation with rigid piles.
(In Chinese) [7] Mostafa El Sawwaf, Experimental study of eccentrically loaded raft with connected and unconnected short piles, J.

., El-Sehily B.M..
[6] Miller E.E., Sutton M.A., Deng X., et al.
Experimental and Predicted Crack Paths for Al-2024-T351 Under Mixed-Mode I/II Fatigue.

Hiratsuka has investigated dry sliding friction and wear in vacuum and oxygen of Al, Ni and Cu.
The materials studied were a CuZn brass alloy and steel AISI 1045 with the following chemical composition in weight percent, respectively: for the pin 64% Cu, 0.25% Si, 0.11% Al, 0.21% Fe and the balance Zn; for steel disc Fe + 0.45% to 0.51% C, 0.5% Mn, Si < 0.1, P < 0.035% .
[3] El Mansori M, Zaidi H, Kadiri EK, Paulmier D.

Reimann et al. [15] concluded that this effect is difficult to separate from the soil pH in Norway, as the distance from the coast and difference in soil pH occur together.
(wb) VM (db) FC (db) Ash (db) HHV (MJ/kg) WP 51.3 6.0 0.11 <0.05 <0.02 42.4 6.3 85.3 14.5 0.2 20.6 GG 53.6 6.0 0.43 0.13 0.04 40.1 9.5 77.0 20.7 2.3 21.6 WP/GG-5 51.4 6.2 0.13 0.14 <0.02 43.1 14.6 84.6 15.0 0.4 20.8 WP/GG-20 52.3 6.2 0.17 0.15 <0.02 43.1 14.2 83.0 16.5 0.6 21.1 WP/GG-50 52.7 6.2 0.21 0.15 <0.02 42.1 13 80.7 18.0 1.3 21.4 Table 2: Fuel ash composition, wt% of ash Element WP GG WP/GG-5 WP/GG-20 WP/GG-50 Si 3.73 8.41 6.26 6.85 8.24 Al 0.98 0.67 1.05 0.93 0.84 Ca 23.94 23.30 21.01 23.35 22.74 Fe 0.91 0.55 1.54 1.00 0.73 K 10.94 9.90 10.92 9.87 9.55 Mg 3.75 1.90 3.37 2.57 2.09 Mn 2.63 2.43 2.37 2.42 2.32 Na 1.08 1.01 1.81 1.09 0.96 P 1.44 1.62 2.63 1.57 1.55 Ti 0.03 0.04 0.05 0.05 0.05 Ba 0.30 0.24 0.24 0.26 0.24 Cr 0.01 0.00 0.02 0.01 0.01 Cu 0.02 0.01 0.02 0.01 0.01 Ni - - 0.01 - - Sr 0.12 0.09 0.10 0.10 0.09 W 0.02 0.01 0.01 0.01 0.01 Zn 0.23 0.28 0.24 0.24 0.28 Combustion Tests.
Elled, K.O.

Improved low Cr steel L Pigliacampo et al. developed the optimization of low carbon steel 3Cr, to fill in the conventional carbon steel and low alloy steel (carbon and low alloy steels, CLASs) and corrosion resistant alloy steel (corrosion resistant alloys, CRAs), the gap between this kind of material than the CLASs has a higher corrosion resistance, with enough mechanical properties at the same time, so low carbon 3Cr optimization will be the choice of appropriate completion homework.
Nasr-El-Din, A.S.
Al- Khuraidah, etc.