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Through the comparison of adscititious biological materials and the blank group, we find that the denitrification effects are not significant.
Acknowledgement This research is supported by Major Science and Technology Program for Water Pollution Control and Treatment（2012ZX07104-001）and Beijing Municipal Science & technology Commission project（D0706006040291）.
Chinese Journal of Environmental Engineering[J], Vol.3(2009),1995-1999
Sterner, Human Influences on Nitrogen Removal in Lakes, Science[J] ,Vol.342(2013)
Journal of Henan Normal University (Natural Science Edition)[J],Vol.40(2012),118-120

Theoretically super composite material can be got by mixing a few carbon nanotubes in conventional composite materials, but there are many constraints its practical application [1-3].
In this paper, cement-based composite materials combined with multi-wall carbon nanotubes is studied on the basis of related researches home and abroad, and the results show that the electrical receptivity and the mechanic-sensitive properties of the new composite material combined with a few can be remarkably improved, which will be instructive for the practical application of CNTs.
Experimental procedure Materials Preparation.
Firstly, like other smart concrete, because of the structure deformation, the space between materials, the lap number and the lap jointing type are all changed under the additional load, which results in corresponding changes of resistivity with the stress.
[6] Li Gengying, Wang Peiming: Sichuan Building Science, Vol.33 (2007), p.143 [7] Wen Sihai, CHUNG D D L.: Cement and Concrete Research, Vol.29(1999), p.961 [8] Yu M F, et al: Science, Vol.287(2000), p.637 [9] Luo Jianlin, Duan Zhongdong, Zhao Tiejun: Journal of Harbin Institute of Technology, Vol.42 (2010), p.1237

However, for forming tools hardened material is applied.
Vucetic, Sheet-Bulk Metal Forming of Symetric and Asymetric Parts, In: Advanced Materials Research Vol. 769, Trans Tech Publications, Switzerland, 2013, pp 229-236 [2] R.
Opel, Investigations on orbital forming of sheet metals to manufacture tailored blanks with a defined sheet thickness variation, In: Advanced Materials Research Vol. 769, , Trans Tech Publications, Switzerland, 2013, pp 157-164 [3] M.
Lee, A simple method of eliminating residual tensile stresses in the grinding of low carbon steels, International Journal of Machine Tools and Manufacture, Volume 31 No. 3, 1991, pp 425-434 [10] C.
Barlat, Correlations between nanoindentation hardness and macroscopic mechanical properties in DP980 steels, Materials Science & Engineering A, Issue 597, Amsterdam, Elsevier, 2014, pp 431-439 [12] B.

Materials Science and Technology, 34 (2018) 1112-1117
Materials Science and Technology. 23 (2013) 819-827
Materials Science and Technology, 27 (2013) 525-529
Rare Metal Materials and Engineering, 39 (2010) 1993-1996
Metallurgical Materials Transactions A, 33 (2002) 1931-1938

Main Part One of the primary issues that designers or production engineers consider when developing fuel elements is the issue of materials and fuel assemblies corrosion resistance in the working fluid [3].
Currently, in many countries that use nuclear power, the behaviour of fuel elements shells materials is widely studied regarding the design accidents temperatures (500 - 600 to 1100 - 1200 °С) and at higher temperatures.
One has to provide for efficient cooling so that the temperatures level is appropriate for the available materials.
Fuel element structure Materials and Research Methods.
Sincheskul, The study of inhibiting structural material corrosion in water recycling systems by sodium hydroxide, Eastern-European Journal of Enterprise Technologies, 1–85 (2)(2017) 21–28

The new peristaltic pump is constructed with three laser-defined structural layers made only of PDMS material using MEMS fabrication technology as shown in Fig. 1(a).
Materials and Methods Design.
Acknowledgments The authors gratefully acknowledge the financial support provided to this study by Natural Science Foundation Project of CQ CSTC2011jjA10018.
Pan, A vacuum-driven peristaltic micropump with valved actuation chambers, Journal of Micromechanics and Microengineering, Vol. 21, (2011), p. 065034
Lee, Pneumatically driven peristaltic micropumps utilizing serpentine-shape channels, Journal of Micromechanics and Microengineering, vol. 16, (2006), p. 341-348

The focus, however, has been shifted to the application of Ni-based materials.
Projects like MARCKO700 and COORETEC DE4 [1, 2] qualify different martensitic materials and Ni-based alloys (base materials and welded joints) for both, the application in steam turbines and boiler plants.
Cabbibo et al, in: Journal of Materials Science, Vol. 43, (2008) 8, p. 2912-2921
Zhao et al, in: Metallurgical and Materials Transactions A, Vol. 32A, (2001), p.1271-1282
B48749, Lucas Gas Turbine Equipment Ltd., Materials Laboratory, Burnley, Sept. 25, (1968).

The material characterization and stability results revealed that ZnO/CuO hybrid nanofluid is promising and shows good potential when utilized in EOR applications.
Among various nanoparticle materials, zinc oxide (ZnO) and copper oxide (CuO) have garnered attention due to their unique physicochemical properties such as thermal stability, wettability alteration, reduced interfacial tension and improved oil mobility [5,6].
The synthesis of ZnO/CuO hybrid nanocomposites would offer a strategic approach to leverage the advantages of both materials.
Materials and Methods Materials and Reagents Zinc acetate dihydrate was purchased from Sigma-Aldrich.
Eldemerdash, Experimental investigation of copper oxide nanofluids for enhanced oil recovery in the presence of cationic surfactant using a microfluidic model, Chemical Engineering Journal 488 (2024). https://doi.org/10.1016/j.cej.2024.151011

To reduce the undesirable effects of wear, lubricants are generally applied along the interface of contacting materials.
Tribology - Materials, Surfaces & Interfaces, Vol. 6-3 (2012), p. 134-141
Gunko: Stability of Colloidal Silica Modified by Macromolecular Polyacrylic Acid (PAA)-Application of Turbidymetry Method, Journal of Macromolecular Science, Part A: Pure and Applied Chemistry Vol. 50 (2013), p. 639–643
Vijay Kumar: Titanium Oxide Nanoparticles as Additives in Engine Oil, Journal of King Saud University - Engineering Sciences Vol. 30-2 (2018), p. 116-122
Venkatraman: Tribological Properties and Stabilization of Engine Oil with Nano Particles-A Review, International Journal of Innovative Research in Science, Engineering and Technology Vol. 4-3 (2015), p. 193-197

Physics and chemistry of materials processing. 6 (2009) 41-47
(Special Issue on Techniques and Technologies) World Applied Sciences Journal. 22 (2013) 87-90
Manufacture of MAW electrodes from nanodisperse materials // World Applied Sciences Journal. 29 (6) (2014) 720-723
Part 1 - Materials, Methods of Research and Role of Chemical Elements, J.
Archives of Materials Science and Engineering. 2 (2008) 121-124