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The choice of a suitable MRP procedure and its parameters can reduce excessive quantities of materials and, consequently, cost.
The production processes in an enterprise are based on numerous materials.
These parameters are hard to evaluate by the user, especially in the case of a large number of materials and if the trend of material demand cannot be easily identified.
As a result, the excessive quantities of materials and cost can be reduced.
Enns: MRP performance effects due to forecast bias and demand uncertainty, European Journal of Operational Research Vol. 138 (2002), pp. 87-102

Typical LCS design [11] Clog material composition A number of studies have been performed to investigate clog material composition of landfill LCSs (Table 1).
The anaerobic bacteria in the leachate easily remove volatile fatty acids (VFAs) from the leachate , colonize the surfaces of leachate collection systems materials and form a thick biofilm [2, 16-17, 20, 22-26].
The use of a filter–separator between the gravel and waste material can help reduce the amount and rate of clogging in the underlying gravel drainage material [37].
Acknowledgements This research was financially supported by the National "Twelfth Five-Year" Plan for Science & Technology (Project No. 20111857652).
VanGulck, Biologically induced clogging of a granular medium permeated with synthetic leachate, Journal of Environmental Engineering and Science., 1 (2002) 135-156

Development of Fe-based bulk metallic glasses (BMG) with good mechanical and soft magnetic properties has become a major objective in the materials science field.
The values recorded for hardness and fracture strength includes this alloy in the category of high resistant materials. 1.
The Fe60Co14Ga2P10B5Si3Al3C3 BMG exhibits high hardness of 825 HV and high fracture strength of 2458 MPa placing it in the hard materials category.
Shek, Bulk metallic glasses, Materials Science and Engineering R 44, (2004) [3] M.
Greer, Mechanical properties of Fe-based bulk glassy alloys in Fe–B–Si–Nb and Fe–Ga–P–C–B–Si systems, Journal of Materials Research 18, (2003)

We study the physical properties of shielding materials with different polyolefins as base materials, and investigate the neutron-shielding performance of boron-containing and lithium-containing shielding materials.
Wang et al, Preparation of boron carbide/ultra-high mlecular weight polyethylene composites for neutron shielding[J], Journal of Materials Engineering, (2):337-340 [2] G.Y.
Journal of functional Alaterials. 2008, 39:558-560
Journal of Tianjin University. 2006, 39(10):1169-1173
Materials Science & Technolgy. 2003,11(1):101

Development of SO2 absorption materials having low temperature activity by base adducted complex method Yugo Osaka1, a, Fumiya Takahashi2, Takuya Tsujiguchi1, Akio Kodama1, Hongyu Huang3, Zhaohong He3 and Huhetaoli3 1 School of Mechanical Engineering, College of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, Ishikawa, 920-1192, Japan 2 Division of Human and Mechanical Science and Engineering, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan 3 Chinese Academy of Science, Guangzhou Institute of Energy Conversion, No.2 Nengyuan Rd.
So, NaOH or LiOH is focused on in this study as a base materials.
It seems that these materials differ SO2 absorption mechanism.
Both materials increase SO2 absorption capacity which is shown in Fig.8.
Matsuyama, Journal of Energy and Resources, vol.31, No.4, p.214, 2010 [4] Victoria M.L.

Introduction Bismaleimide resin is one of high-performance polymer materials and widely used in the aerospace and other high-tech areas [[] S.
Therefore, the modification of bismaleimide is of special interest to the polymer materials workers [[] Y.
Gérard: Journal of Applied Polymer Science, Vol.96 (2005) No.3, P.660 [] B.
Xu: Polymer Materials Science and Engineering, Vol.22 (2006) No.4, P.88 (In Chinese) ].
TOBBDHMI is expected to be used with other bismaleimide monomers, which may improve polymeric materials’ heat resistance and/or mechanical properties.

Box 137, School of Astronautics, Harbin Institute of Technology, Harbin 150001, P R China 2Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan awangyize@gmail.com, bfmli@hit.edu.cn, ckkishimo@mep.titech.ac.jp Keywords: Flexural wave, Localization, Band gap materials, Random disorder, Axial load Abstract.
Introduction In recent years, there is a lot of attention on the study of wave propagation in periodic composite materials which are also called the band gap materials [1,2].
With this characteristic, the band gap materials have many potential applications such as the acoustic transducers and filters and the vibration isolation technology.
As a result, there is a growing interest on the band gap materials with both theoretical and experimental investigations [3–6].
It should be noted that in the practical applications, due to the error in the manufacture, the random disorders cannot be avoided and the band gap materials become the randomly disordered system.

Acknowledgments This research work is supported by National Natural Science Foundation of China (50475149), Science and Technology Research Key Project of Ministry of Education (105053), and Science and Technology Plan Projects of Liaoning Province (2004222001).
Effects of surface structures of MgO(100) single crystal substrates on ferroelectric PbTiO3 thin films grown by radio frequency sputtering, Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, v13, n1, 1995, p95-100
Journal of Materials Processing Technology, 1995(37):569~583
A study on the mirror-like grinding of MgO single crystal with various diamond wheels, Journal of Materials Processing Technology, 1997(72):1~10
Chinese Journal of Semiconductors. 2005(26): 606~612.

As for the velocity, the maximum deformation and stress of solid materials are increased with an increase in the velocity, especially in the high speed range.
Acknowledgements The work is financially supported by National Natural Science Foundation of China (51375276 and 51405274) and Independent Innovation Science Foundation of Shandong University.
Journal of Engineering Materials and Technology, ASME.,1989, 111: 221-228 [2] Wang J.Particle velocity models for ultra high pressure abrasive waterjets.
Journal of Materials Processing Technology,2009(9): 2314—2320 [3] M.
A, Dynamic elastic-plastic analysis of 3-D deformation in abrasive water jet machining, Journal of Materials Process technology, 2001,113: 337-341

Kurska, Investigation of the Processes of Formation of a Fire Retardant Coating, Materials Science Forum, 1038 (2021) 480–485
Korytchenko et al., Enhancing the Fire Resistance of Concrete Structures by Applying Fire-Retardant Temperature-Resistant Metal Coatings , Materials Science Forum, 1038 (2021) 500–505
Bezuglov, Mathematical Modeling of Fire-Proof Efficiency of Coatings Based on Silicate Composition, Materials Science Forum, 1006 (2020) 70
Korytchenko et al., Advanced detonation gun application for aluminum oxide coating , Multidisciplinary journal "Functional Materials", 27 (1) (2020) 224–229
Shcherban, Dehydration factor upon activation of building sand by ultraviolet radiation, Materials Science and Engineering, 896 (2020) 1–6