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The study of metal cutting focuses, among others, on the features of tools, input work materials, and the machine parameter settings influencing process efficiency and output quality characteristics (or responses) [1].
Motorcu: Surface roughness prediction model in machining of carbon steel by PVD coated cutting tools (Journal of applied sciences, 2004)
Masounave: An experimental design for surface roughness and built-up edge formation in lathe dry turning (Journal of Quality Science, 1997)
Tarng: Design optimization of cutting parameters for turning operations based on Taguchi method (Journal of Material Processing Technology, 1998)
Abdullah: Performance evaluation of cemented carbide tools in turning AISI 1010 steel (Journal of Material Processing Technology, 2001)

Although ZnO is one of the earliest discovered materials for gas sensor but their limitation is low sensitivity.
Yang: Materials Chemistry and Physics, Vol. 72 (2001) p. 269–272
[19] H.W.Kim, N.H.Kim: Materials Science and Engineering, Vol.
[20] X.L.Cao: Advanced Materials Research Vol. 335-336 (2011) p. 478-482
Bandyopadhyay, and S Bose:Materials Science and Engineering: B, vol. 164 (2009) p. 38-43.

Due to composite materials are natural orthotropic, so gradually these materials are substituted by some metals such as steel that are used in manufacturing automobile and aerospace and other industries.
Introduction Drilling of FRP composite materials presents a plethora of questions to the engineers and scientists.
A number of research endeavors have been made in the recent past to fully characterize the drilling process for FRP composite materials.
Reference: [1] Singh.I, ״ Drilling Induced Damage in FRP Composite Laminates ״ , Journal-MM, Vol 85, 2004 [2] Fernandes.Marta, ״ Intelligent Automated Drilling and Reaming of Carbon Composites ״ , from University of wollongong, for the degree of Doctor of philosophy,2005 [3] Singh.I, " Drilling of uni-directional glass fiber reinforced plastic (UD-GFRP) composite Laminates ", International Journal of Manufacturing Technology27, PP870-876, 2006 [4] Shirikant Kolhar.Arvind, ״ Analysis of Delamination in Drilling of Circular Plate Composite Materials with a Multi-Facet Drill Bit ״ , Department of Mechanical Engineering, Wichita State University, for the degree of Master of Science, India, 2007 [5] Tsao.C.C, ״ Effect of tool wear on delamination in drilling composite materials ״ , International Journal of Mechanical Sciences 49, PP 983-988, 2007 [6] Abr˜ ao.A.M, ״ Drilling of fiber reinforced plastics: A review ״ , Journal of Materials Processing Technology 186, PP 1-7, 2007 [
Materials and Design 30 (2009) 2186–2190 [11] U.A.

Several techniques for the reduction of dislocation density have been proposed for the III-nitride materials [6–11].
Japanese journal of applied physics, 1998, 37(4A), p.398
Journal of Applied Physics, 1998, 83(7), p.3656-p.3659
Journal of crystal growth, 2001, 231(3), p.371-p.390
Journal of Crystal Growth, 2009, 311(10), p.3080-p.3084.

Another major issue of the numerical results is that the designed explosion door can meet the strength requirement of the materials.
Krause: Fire Safety Journal.
[2] Siegfried Hochst, Wolfgang Leuckel: Journal of Loss Prevention in the Process Industries.
Russo: Journal of Hazardous Materials.
[6] Akinori Hashimotoa, Akiko Matsuo: Journal of Loss Prevention in the Process Industries.

Materials and Methods Extraction of garlic.
Akpolat, Garlic, hypertension and patient education, International journal of cardiology. 121 (2007) 130-131
A pilot study, Pharmacotherapy: The Journal of Human Pharmacology and Drug Therapy. 13 (1993) 406-407
Yang, Microencapsulation of Brucea javanica oil: Characterization, stability and optimization of spray drying conditions, Journal of Drug Delivery Science and Technology. 36 (2016) 46-54
Wilson, Influence of pressing method on juice stilbene content in muscadine and bunch grapes, Journal of food science. 73 (2008) 58-62

Therefore, the compositing modification between the other bio-compatible materials and the chitosan is one of the common methods[ 4-6].
The experiment The main materials.
Journal of Functional Materials, 2008,39(3)：523-525
Chemical Engineering Journal .2010, (165):240–249
Journal of Wuhan University (Science Edition), 2006,52(2):189-192

In this article, the chrome tanned cattle (pig) leather and unsaturated polyester resin or epoxy resin were used as raw materials, leather/resin composite material was prepared.
Before 1970 reports dominantly focused on uses not requiring extensive pretreatment of tanned wastes, including the manufacture insulators, building materials, fibrous sheets, and shoe soles.
It is an effective way for solid leather wastes treatment which combines the leather waste with other materials to form composite materials.
Experimental Section Raw materials.
Journal of Applied Polymer Science, 118 (2010) 446–451

Approximately 30% fly ash is used for road conduction, building materials and agriculture.
It could be a nice adsorption material.
Materials and methods Materials Fly ash (Mei Zhou power plant) were dipped in HCl, and then washed thoroughly with demonized water to neutral and oven dried at 100℃ for 24h.
“Study on Zincic Wastewater Treatment by Modified Fly Ash”, Environmental Protection Science 2005,31(129):19-21 [3] Yu Xiaocai, Wang Ende, Wang Wuming “Environmental Treatment of Papermaking Wastewater by Modified Fly Ash”, Journal of Northeastern University (Natural Science) 2003,24(8)814-816
“Biosorption of chromium (VI) ion form aqueous solutions using walnut, hazelnut and almond shell ”, Journal of Hazardous Materials 2008.155(1-2):378-384

Introduction Three-dimensional (3D) braided composites reinforced by carbon fibers as a kind of advanced structure materials have been widely used in many industries due to the advantages over the conventional laminated composites, including light weight, high damage tolerance, ect.
Studies of its basic mechanical properties such as strength and stiffness are the most important precondition of how to put the materials into structure design.
References [1] LI Jialu, CHEN Li and JIAO Yanan: International Textile Science and Technology Forum(Academic Journal Electronic Publications,China2009)
Journal of Materials Engineering.
Journal of Materials Engineering.