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The workpiece materials were three kinds of typical natural granite - black, gray, and red.
Wang: Key Engineering Materials, Vol. 202-203 (2001), p. 199
Malkin: Transactions of ASME - Journal of Manufacturing Science and Engineering, Vol. 123 (2001), p. 13
Xu: Journal of Materials Processing Techology, Vol. 129 (2002), p. 50
Xu: Key Engineering Materials, Vol. 250 (2003), p. 187.

In previous research, rice husk or its derivatives have been used to prepare useful carbon materials like active carbons [1], and silicon-based materials like silver modified porous silica [2], and zeolites [3].
To enhance the additional value derived from rice husk or its derivative, it is more advisable to convert them simultaneously into carbon materials and silicon-based materials, as already highlighted by some researchers [4-6].
Experimental Materials.
Wang: Journal of Cleaner Production Vol. 32 (2012), p. 204 [7] Lu Q., X.Y.
Jahn: Materials Research Vol. 9 (2006), p. 335

Materials and Methods The location of the study region: The study region (Sanam mountain-Al Zubair) is located in the southwestern part of Basra province in southern Iraq, within Al-Zubair district between latitude (30° 26´ 56.18” to 30° 7´ 15.40”) N in the north, and longitudes (47°26´11.42” to 47°47´26.60”) E in the east, and its area is (1127) km2.
The spatial analysis of TDS, EC, and pH for the soil are influenced by structural factors, such as climate, parent material, topography, soil texture, and other natural factors.
Knutsson, "Geomorphology, Geology and Tectonics of Jabal Sanam, Southern Iraq," Journal of Earth Sciences and Geotechnical Engineering, vol. 7, no. 3, pp. 97-113, 2017
Iraq," Iraqi Geological Journal, Vols. 34-38, no. 1, pp. 122-133, 2005
Naji, "Separating the terrain cover of Iraqi marshes region using new satellite band combination," Iraqi Journal of Agricultural Sciences, vol. 51, no. 6, pp. 1504-1516, 2020

Plant Materials and Methods Plant material Seedlings of hybrid pennisetum were provided by Prof.
Fresh plant materials were extracted with boiling distilled water, the solution was filtered and then adjusted to a volume of 25 mL with deionized water.
Trends in Plant Science, 11, 610–617. (2006) [14] H Marschner.
Soil Science Society of America Journal, 63, 1055–1062. (1999) [16] Z Chen, M Zhou, I Newman, N Mendham, G Zhang, S Shabala.
Journal of Plant Physiology, 166, 1968–1981. (2009) [21] YP Guo, PZ Chen, LC Zhang, SL Zhang.

Cellulose decomposing enzyme is easy to become inactivation in the pretreatment process of raw materials [15].
Davison et al: Science Vol. 484-489 (2006), p.311 [3] B.X.
Sun: Journal of Protein Chemistry Vol. 59-66 (1997), p.16 [4] H.Y.
Zhang: Natural polymer science and material (Science Press, China 2007) [6] M.P.
Sticklen: Plant Science Vol. 617-623 (2006), p.171 [15] F.

Concrete Materials and Mixtures.
[3] Ming-Gin Lee, Wei-Chien Wang, Yishuo Huang, Yu-Min SU and Jiang Quanzhou, Effect of carbon dioxide curing on strength development of cement mortar, 2017 International Conference on Advanced Materials and Building Materials, Kuala Lumpur, Malaysia, April 21-22, 2017
ACI Journal 73 (1): 33-36, 1976
Advances in Materials Science and Engineering Vol. 2015, Article ID 580638, 12 pages (2015)
ACI Materials Journal 102 (5): 315-321, 2005

Zhu: Journal of Composite Materials, Vol.35 (2001) No.23. pp.2098-2126
Park: Packaging Technology and Science, Vol.17 (2004) No.5, pp.275-286
Tarash, et al: Packaging Technology & Science, Vol.18 (2005) No.5, pp.273-278
Veprik: Journal of Sound and Vibration, Vol.259 (2003) No.1, pp.161-175
Xu: Advanced Materials Research, Vol.123-125 (2010), pp.443-446.

Currently there are several ways in the following: Dipping, spraying, brushing method: it generally uses 0.5～5% physic liquor for dry materials to dip, spray or brush.
Because the required equipment is more complex, a small amount of materials can be commissioned to special pressure treatment factory to process [13].
Journal of Bamboo Research, 1997, 16 (2):26-33
Forestry Science and Technology Development, 1997, (2):8-10
Journal of Bamboo Research, 2000, 19 (2):1-6

Introduction In microbial fuel cells (MFCs), anode materials and their surface property affect the cell performance because they play an important role in the adhesion of the bacteria and the electron transfer [1].
Various metals have been employed for modifying the carbon materials, i.e., vapor-deposited ferric iron [4], incorporation of manganese ion into the graphite anode [5], coating the graphite anode with tungsten carbide [6] or platinum-polyaniline [7], electro deposition of nickel, NiFe or NiFeP on the carbon felt [3,8].
Mitov: Journal of Materials Science Vol. 46 (2011), p. 7074
Gikas: Journal of Hazardous Materials Vol. 143 (2007), p. 246
Gikas: Journal of Hazardous Materials Vol. 159 (2008), p. 187.

About 70% of ferrous castings are processed with green molding sand which contains about of sand (mainly silica sand), bentonite clay, carbonaceous materials and water.
The use of carbonaceous materials with high lustrous carbon in green molding sand can resist burn-on defects and improve surface roughness of the castings.
The natural yellow clay-bonded sand is composed of about 70% of yellow loam and 30% of slag, without super sea coal or any other carbonaceous materials.
Materials and methods In this work, natural yellow clay-bonded green sand was supported by Zhejiang Jinwang Mechanical Manufacturing Co.
Omotoyimbo: Applied Clay Science Vol. 45 (2009), p. 244-247 [2] C.