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Universidad de Cádiz 10, E-11519 Puerto Real, Cadiz, Spain 4Department of Materials Science and Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, INNANOMAT, IMEYMAT, University of Cádiz.
PLA being one of the materials most employed for FFF.
Materials & Methods PLA samples printing.
Rapid Prototyping Journal, 26(5), 793–799. https://doi.org/10.1108/RPJ-05-2018-0126 [8] Turner B.
Measurement Science and Technology”, 27(7), p.072001

West Conshohocken, PA, American Society for Testing and Materials, 1988, 415–421
Textile Research Journal, 2008, 78: 604–613
Textile Research Journal, 2006, 76: 27–31
Textile Research Journal, 2012, 83: 1235–1243
J of Fire Sciences 2012; 31(2) 99-111.

The mission of the WAI is to Develop guidelines that are widely regarded as the international standard for Web accessibility; support materials to help understand and implement Web accessibility; and resources through international collaboration The W3C published its first Web Content Accessibility Guidelines (WCAG 1.0) in May of 1999 for making online content accessible to people with disabilities.
The New England Journal of Medicine, 348 (25), 2526-2534
Journal of Nursing Administration, 23 (11), 24-34
[10] Paparella, S.S. (2007), “FMEA: a useful tool for risk identification and injury prevention”, Journal of Emergency Nursing: JEN (J Emerg Nurs), Vol. 33 No. 4, pp. 367-71
A Thesis Submitted to Institute of Management National Yunlin University of Science & Technology in Partial Fulfillment of the Requirements for the Degree of Doctor of philosophy in Management

The kinetic energy of this blade finite element can be expressed in the form Eke=120leAxvSTx,tvSx,t + ωTx,tJxωx,tρdx , (9) where A(x) represents the cross-sectional area and ρ is the material density.
Csaba, Forced response analysis in time and frequency domains of a tuned bladed disk with friction dampers, Journal of Sound and Vibration 214 (1998), pp. 395-412
Yokoyama, Free vibration characteristics of rotating Timoshenko beams, International Journal of Mechanical Sciences 30 (1988), pp. 743-755
Bin, Finite element analysis of rolling process for variable cross-section blade, Journal of Central South University 20 (2013), pp. 3431-3436
Wei, Dynamics of transversely vibrating beams using four engineering theories, Journal of Sound and Vibration 225 (1999), pp. 935-988

In order to achieve sustainable growth, the optimization and upgrading of industrial structure must meet the following requirements[5]: <ⅰ> Labor productivity of three industries continues to rise in order to meet the growing material and cultural needs of the people
International Journal of Industrial Organization, 22(2004): 561-574
Journal of Systems Engineering and Electronics, 3(2008):499-506 [4] Zhaohua, Shu ji-dong, Zhou hong-xiang.
Research on implicit contract and regulatory mechanism for stability cooperation in enterprise clusters.Chinese journal of management science, 2(2010):151-156
European Journal of Operational Research, 1(2005): 225-238

Mechanics Analysis of semi-rigid subgrade pavement structure Liya Su Architecture and Civil Engineering School, Inner Mongolia University of Science and technology, Baotou, 014010, China suliya1@.imust.cn Keyword: Asphalt Pavement, Semi-rigid foundation, modulus of elasticity, reasonable thickness Abstract.
Introduction The semi-rigid base asphalt pavement is the main road structure form in China[1], the many advantages of the semi-rigid base material for thinning, and reduced the construction cost to provide the reliable guarantee for asphalt layer, but with the increase of traffic volume and vehicle load, the semi-rigid base itself defects and overloading problems caused the early damage,which reduce the service life and service quality of Pavement in a large extent.
With the elastic modulus of semi-rigid base materials increased, road deflection value decreases as shown in Fig.2. when elastic modulus of base layer reaches a certain value, the road deflection may not decrease.
When select different elastic modulus and thickness of semi-rigid material, analysis and checking calculation of the mechanical response of various design parameters on pavement under the traffic load (stress and displacement component).Through calculation and analysis get the following conclusions: Elastic modulus of semi-rigid base materials between1500MPa and 3000MPa, and thickness control under 35cm is more reasonable.
Stress analysis on the composite pavement of elastic foundation[J],Journal of chang ’an university,2008,28,25-29

Introduction In the process of creep feed grinding, large grinding depth is always used to obtain high material remove rate [1,2].
However, the high material remove rate brings high heat generated rate in the grinding contact zone which causes surface burning of the work piece [3].
As creep feed grinding difficult to machine materials such as titanium alloy and superalloy, the surface burning is more serious because its low heat conductivity, high strength and toughness [4].
So, how to solve the problem in grinding burn for difficult to machine materials is a focus of grinding research field.
Journal of Manufacturing Science and Engineering, 2001, 123(2):185-190

Experimental design Test materials The cement is P O32.5 R conch brand ordinary Portland; sand is ordinary; mixing water is tap water; natural coarse aggregate is continuous grading crushed stone, and the maximum size is 20 mm.
Table.1 　 Regeneration concrete proportions Specimen number water cement ratio sand ratio /% Various materials consumption（kg/m3） cement tap water Fine aggregate（sand） natural coarse aggregate Recycled coarse aggregate RAC-0 0.41 32 524 215 532 1129 0 RAC-1 0.41 32 524 215 532 1016 113 RAC-2 0.41 32 524 215 532 903 226 RAC-3 0.41 32 524 215 532 790 339 RAC-4 0.41 32 524 215 532 677 452 RAC-5 0.41 32 524 215 532 564 565 RAC-6 0.41 32 524 215 532 452 667 RAC-7 0.41 32 524 215 532 339 790 RAC-8 0.41 32 524 215 532 226 903 RAC-9 0.41 32 524 215 532 113 1016 RAC-10 0.41 32 524 215 532 0 1129 Note：Each group has three specimens under the same condition production, maintenance and test.
Table 2 Recycled concrete uniaxial compression test Specimen Numbers Aggregate replace rate / % Axis compressive strength fcp / Mpa A third of the axis compressive strength load Fa / N RAC-0 0 46.67 350056.67 RAC-1 10 44.27 332010.00 RAC-2 20 50.57 379253.33 RAC-3 30 46.67 350000.00 RAC-4 40 46.71 350315.00 RAC-5 50 46.15 346106.67 RAC-6 60 43.60 327033.33 RAC-7 70 49.76 373205.00 RAC-8 80 46.03 345260.00 RAC-9 90 46.86 351460.00 RAC-10 100 50.67 379996.67 Elastic modulus Elastic modulus of concrete is the main index of material deformation properties, which is one of the fundamental parameters in concrete structure analysis and calculation.
Acknowledgements This work was financially supported by the Key Project of Experimental Center of Guangxi Science and Technology (LGZX201102).
References [1] Li Xunping: Journal of Building Materials, Vol. 10(5) (2007), p. 598−603 [2] Guo Zhenhai and Shi Xundong: Reinforced Concrete Theory and Analyse [M], 2003 [3] Dhir R.K.

Performance Study on Masonries of Different Aerated Concrete Blocks Pengfei Penga, Xianming Qinb, Yusheng Wuc Key Laboratory of Construction Test & Diagnosis and Treatment, China Building Material Test & Certification Group Xiamen Hongye CO.
It becomes one of the leading energy-saving material for walls gradually due to the low resources consumption, large quantities of industry waste residue utilization and the requirement of energy saving of 50% can be achieve by single material [1,2].
Experimental The test materials are three aerated concretes and three plastering mortars, the fundamental characteristics are listed in Tables 1 and 2.
New Building Materials.2 (2006)54-58
Journal of Sichuan University (Engineering science edition).1 (2013)47-51.

Bahout1, b * 1Institut des Sciences Chimiques de Rennes (équipe Chimie du Solide et Matériaux), UMR 6226 CNRS-Université de Rennes 1, Bât. 10B, Campus de Beaulieu, F-35042 Rennes, France.
To date, most investigations have targeted materials with the perovskite structure.
J., Chemistry of Materials 2010, 22 (3), 660-674
C.; Greaves, C., Chemistry of Materials 2013, 25 (20), 4053-4063
J.; Hadermann, J.; Van Tendeloo, G.; Greaves, C., Journal of Solid State Chemistry 2002, 167 (1), 145-151