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Introduction Ecosystems not only supply the materials for existence and reproduction of human beings and other organisms but also provide life-support systems of the earth.
We used “all database” including (1) Web of Science (1900-2011), and (2) Journal Citation Reports and analysed all records published until the end of 2011.
Tang: Journal of Central South University of Technology, 18 (2001), 420-428
Zhang: Science, 322 (2008), 528-528
Mitsch: Science, 325 (2009), 676-676

In addition to the corrosiveness of the atmosphere where the wind turbine and hydro turbine operates, the need of corrosion resistance of all materials involved in the construction is also important factor.
The low rpm alternator from the theoritical point of view could produced by adding the pole, but to make it work effectively and efficiently it needs more engineering discussion and needs experts of various fields of science.
Regarding the corrosiveness of the environment where the apparatus to operate, it is hoped that all materials involved in the hydro turbine and wind turbine apparatus are resist to corrosion.
[8] Fergal O Rourke et al, ‘Tidal Energy Update 2009’ Applied Energy, Elsevier International Journal, Volume 87 (2010), page 398-409
[12] Shankar K Karki, Michael D Mann, Hossein Salehfar, Energy and the Environment in the ASEAN: Challenges and Opportunities, Elsevier International Journal of Energy Policy vol.33 (2005) page 499-509 [13] Rashad SM, Ismail MA,’Environmental-impact assessement of hydro-power in Egypt’, Elsevier International Journal of Applied Energy’ Volume 65 Year 2000.

Materials and methods Chemicals and Sample preparation.
The adjuvant materials were purchased from Lallemand Co.
Food Science and Technology International, Vol. 5 (1999), p. 319-325
Journal of Food Engineering, Vol. 77 (2006), p. 1012-1017
British Journal of Cancer, 2006. 94(12): p. 1898-1905.

Beijing: Chinese Building materials Publishing house, 2006:121
Journal of Composites for Construction，Vol.10,No.4,2006:345-356
Journal of Composites for Construction，Vol. 9,No. 4,2005:327-336
Wuhan University of Science and Technology journal, 2002,24 (7):31-34
Journal of Composites for Construction, ASCE,2001, 5(1):44-56

These types of high surface area materials hold tremendous untapped potential in micro-total analysis systems, micro-reaction technology and clean energy systems.
Also, monolithic materials are considered as novel materials for the generation of stationary phases in the separation science because of their easy preparation, excellent flow properties and high performances when compared with conventional packed beds [13-16].
These high surface area materials hold tremendous untapped potential in micro-total analysis systems, micro-reaction technology, clean energy systems (especially fuel cells and hydrogen generation) and environmental sensors.
Kim, Journal of Materials Chemistry Vol. 14 (2004), p. 3436
Journal Vol. 48 (2002), p. 1519

Journal of Materials Science: Materials in Electronics, 2020. 31: p. 11352-11365
Journal of Materials Science: Materials in Electronics, 2020. 31(22): p. 19756-19763
Journal of Magnetism and Magnetic Materials, 2010. 322(21): p. 3396-3400
Materials Research Bulletin, 2001. 36(7-8): p. 1369-1377
Materials Research, 2018. 21(2).

Materials and Methodology The TiO₂-ZrO₂ semiconductor was synthesized using the sol-gel method, where ZrOCl₂·8H₂O was dissolved, stirred, and combined with TiO₂ in deionized water at ratio of 1:1.
Studies have shown that Ti-O-Zr bonding can also be detected in composite materials, indicating successful incorporation of ZrO₂ into TiO.
International Journal of Materials and Product Technology, 65(1), 67-79
Optical Materials, 124, 111967
Journal of Magnesium and Alloys

About this point of view one of the most important process responses is the Material Removal Rate (MRR), that is the volume of material removed per time unit.
Process Optimization procedure The developed procedure, as already described, maximizes the Material Removal Rate [mm3/s] (MRR – volume of part removed material per time unit) respecting the flank wear constraint.
Yildiz, Optimization of cutting parameters in multi-pass turning using artificial bee colony-based approach, Information Sciences 220, pp.399–407, 2013; [2] S.
Mohan, Wear analysis of ceramic cutting tools in finish turning of Inconel 718, International Journal of Engineering Science and Technology Vol. 2(9), pp.4253-4262,2010; [8] Duong Xuan-Truong, Tran Minh-Duc, Effect of cutting condition on tool wear and surface roughness, during machining of Inconel 718, International Journal of Advanced Engineering Technology, IV/III, pp.108-112, 2013; [9] J.L.
Paulo Davim, Modelling of surface finish and tool flank wear in turning of AISI D2 steel with ceramic wiper inserts, Journal of Materials Processing Technology, Volume 189, Issues 1–3, Pages 192–198, 2007

Materials and Methods One cycle of mechanic magnetic activation of mixing water consists of two recurrent stages: 1. treatment in cavitation apparatus of rotary type; 2. passing through magnetic field created by permanent magnet with coercive force 140 kA/m.
Ortiz-Lozano, Effects of Static Magnetic Fields on the Physical, Mechanical, and Microstructural Properties of Cement Pastes, Advances in Materials Science and Engineering, 2015 (2015) 1-9
Potnis, Experimental Investigation of Properties of Concrete Cast in Magnetised Water, IJSTE - International Journal of Science Technology and Engineering, 3 (2017)
Pohar, The magnetic field influence on the polymorph composition of CaCO3 precipitation from carbonized aqueous solutions, Journal of Colloid and Interface Science, 281 (2005) 377−388
International scientific-research journal, 50 (2016) 86-89

Robertson, Materials Science and Engineering: R: Reports 37 (2002) 129
Meng, Materials Science and Engineering: B 137 (2007) 310
Umeno, Diamond and Related Materials 15 (2006) 6
Niu, Diamond and Related Materials 17 (2008) 1927
Robertson, Materials Science and Engineering: R: Reports 37 (2002) 129