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This is due to that each agent materials reserve is enough in the early rescue operations, generally meet the current request of the victims.
But in later period, due to the reduction of the materials reserve, each cycle the number of the rescue agents which do not participate in the rescue process increases.
Journal of Nature Disasters, 14(6), 133-140.
Journal of the Operational Research Society, 59(1), 25-33
Journal of Hydrology, 175(1-4), 533-554.

Experimental details Material and specimen.
The continuity of the material was destroyed by the second phase particles contained in aluminum alloy.
Microcracks nucleated in the second phase particles which were equivalent to a notch of materials under fatigue loads.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51075394, 50675221) and the Aero Science Foundation of China (2008ZH85001).
Bucci:International Journal of Fatigue Vol. 26 (2004),p .629 [5] Ali Merati:International Journal of Fatigue Vol. 27 ( 2005), p. 33 [6] Ali Merati:Engineering Failure Analysis Vol. 14 ( 2007), p. 673

The material constants can be approximately estimated in short of test data as k »1.0, , , , .
Socie, in: Advances in Fatigue Science and Tech., p.877-890, edtied by C.M.
Topper: Journal of Materials Vol.5 (1970), p767-776 [6] L.
Wang: Journal of Mechanical Strength Vol.25 (2003), p. 204-206, In Chinese
Zhang: Journal of Aerospace power Vol.24 (2009), p. 804-809, In Chinese

Finite Element Analysis of the Influence of Crack Tip Stress Distribution on Fatigue Crack Propagation Rate of 5XXX Aluminum Alloy Jiaju Liua, Hui Huangb*, Ran Liuc, Li Rongd, Wei Wange and Zuoren Nief College of Materials Science and Engineering, Beijing University of Technology 100 ping le yuan, Chaoyang district, Beijing, 100124, China aliujiaju@emails.bjut.edu.cn, b*huanghui@bjut.edu.cn, cliuran@bjut.edu.cn, drongli@bjut.edu.cn, ewangwei@bjut.edu.cn, fzrnie@bjut.edu.cn.
The main parameters of material are showed in Table 1.
Material Science Engineering.
Journal of rock mechanics and engineering. 24(2005)
Materials’ fatigue, Beijing: National Defence Industry Press, (1993) 194-195

Materials and Methods Materials Used in the study mineral powders were divided into two groups according to the natural rocks: carbonates - limestone and chalk-stone; silicates - hydrothermal quartz.
Gömze, Influence of composition and grain size distribution on the properties of limestone and dolomite asphalt fillers, Materials Science Forum. 729 (2012) 344–349 [9] R.
Mahdi, Effect of Mineral Filler Type and Particle Size on Asphalt-Filler Mastic and Stone Mastic Asphalt Laboratory Measured Properties, Australian Journal of Basic and Applied Sciences. 7(11) (2013) 475–487 [10] M.
Series: Materials Science and Engineering. 245 (2017) 022042 [11] R.
Kuznetsov, Features of the surface properties of acidic mineral materials for asphalt concrete, Construction materials. 8 (2007) 56–57 [23] Y.

CNTs have a unique geometry, and the advantage of being all materials that interact on their surface is ideal for field-effect transistors, nanoscale gas-sensing materials, and conductive-based devices, which are demonstrated as gas sensors [3].
Experimental Work Chemical Materials Table 1 shows the materials used and their specifications in the preparation of MWCNT networks and polypyrrole conductive polymer.
Procedia materials science. 6 (2014) 716-728
Saleh, Characterization of Flexible Multi-Walled Carbon Nanotubes Network Sensor to Freon Gas Detection, Iraqi Journal of Science. 62 (2021) 2543-2554
Windle, Carbon nanotube and polypyrrole composites: coating and doping, Advanced Materials. 12(2000) 522-526

Introduction Calcium phosphate (CaP) ceramics are the main raw materials used to elaborate granules for bone substitutes.
Materials and methods Polymer solutions were prepared at different concentration in deionized water.
Daculsi, Journal of Biomedical Materials Research 51 (2000) 680-4
Sarkar, Journal of Applied Polymer Science. 24 (1979) 1073-1087
Weiss, Key Engineering Materials 330-332 (2007) 847-850

Developments of nanomaterials are innovative, emerging and creating advancement due to their impressive electrical, magnetic, optical, physical and chemical properties than bulk materials [3].
Vollmer, "Materials Mix.
Scheper, "Electrochemical method for the synthesis of silver nanoparticles," Journal of Nanoparticle Research, vol. 11, pp. 1193-1200, 2008
Mohanty, "Biosynthesis of silver nanoparticles using murraya koenigii (curry leaf): An investigation od the effect of broth concentration inreduction mechanism and particles size " ADVANCED MATERIALS vol. 2, pp. 429-434, 2011
[11] Sumit.S.Lal and P.L.Nayak, "Green synthesis of gold nanoparticles using various extract of plants and spices," Review Journal For Science vol. 2, pp. 325-350, 2012

Visible Luminescence of EU3+ Ions in Lithium Barium Borate Glass Keerati Kirdsiri1,a*, Benchaporn DamDee2,b and Jakrapong Kaewkhao1,2,c 1 Center of Excellence in Glass Technology and Materials Science, Nakhon Pathom Rajabhat University, Meuang, Nakhon Pathom, 73000, Thailand 2 Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Meuang, Nakhon Pathom, 73000, Thailand a keyrati@hotmail.com, b thangtt8@gmail.com, c mink110@hotmail.com Keywords: Europium, Borate, Glass, Luminescence property Abstract.
The demand for developing efficient luminescent materials including suitable hosts for lanthanide ions remains highly desirable [1-3].
Natarajan, Journal of Luminescence 356-364 (2015) 158
Ferid, Journal of Luminescence 21-27 (2015)157
Ferid, Optical Materials 607-613 (2014) 37

Introduction Structural channels are widely used in building materials [1] and frame members for automotives.
The A6063-T5 (Japanese Industrial Standards) material model was used as the structural channel material.
Elleuch, Modeling and computation of the three-roller bending process of steel sheets, Journal of Mechanical Science and Technology, Vol. 26, No.1, 2012, pp. 123-128
Osakada, Determination of Forming Path in Three-roll Bending using FEM Simulation and Fuzzy Reasoning, Journal of Materials Processing Technology, Vol. 45, 1994, pp. 161-166
Ades, Bending strength of tubing in the plastic range, Journal of the Aeronautical Sciences, Vol. 24, No. 8, 1957, pp. 605-610.