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The process of setting and early hardening in composite materials is a complex problem which is closely associated with the composition of individual material.
The main advantage of this method is its non-destructive character and the fact that all above mentioned materials can be tested in the same way using the same apparatus.
Materials.
In the future, it is also expected the usage of this apparatus for prediction of the development of early elastic and strength characteristics of composite materials.
Grosse, Advanced testing of cement based materials during setting and hardening, RILEM Publications, Bagneux, France, 2005

Steel box beam adopts materials with high strength, so its components have high strength, light height, good wholeness, nice figure.
Now various engineering’s prefer structures which have large spans and light weights, so it is very important to reasonably and fully use constructing materials in structural design [1].
Tiedao Xuebao/Journal of the China Railway Society, v 30, n 1, p 48-52, February 2008
Journal of structural engineering.
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science), v 35, n 3, p 127-131, March 2007

Experimental procedure Experiments were performed with surface grinder M7120 and workpiece material 45 steel.
Residual compressive stresses are considered beneficial for the mechanical properties of materials, increasing their fatigue strength and the service life of components.
Acknowledgements This research were financially supported by the National Natural Science Foundation of China (Grant No. 50475052) and the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20040145001) Fig.6 The cross-section microcosmic structure of 45 steel for conventional grinding and MQL grinding (a) Conventional grinding (b) MQL grinding Fig.7 Measured result for residual stress -400 -200 0 Residual stress σ/MPa Conventional grinding MQL grinding Fig.8 Machined surface hardness change with depth References [1] Sun-Kyu Lee, Yuji Miyamoto, Tsunemoto Kuriyagawa: International Journal of Machine Tools & Manufacture Vol. 44 (2004), p. 1031 [2] S.
Tridimas: International Journal of Machine Tools & Manufacture Vol. 40 (2000), p. 209 [3] Leonardo Roberto da Silva: International Journal of Machine Tools & Manufacture Vol. 47 (2007), p. 412 [4] Li Changhe, Cai Guangqi, Xiu Shichao: Acta Armamentarii Vol. 28 (2007), p. 202 [5] U.
Walter: Machines and Metals Magazine Vol. 386 (1998), p. 22 [6] Li Changhe,Meng Guangyao,Cai Guangqi: Journal of Qingdao technological university, Vol.28(2) (2007), p. 6 [7] Li Changhe, Xiu Shichao, Cai Guangqi: Advanced Materials Research, Vols. 24-25 (2007), p. 337

Experiment Materials & Instruments Materials: 04-silk crepe de Chine 1)Drugs: sericin powder (CP), triethanolamine (TEA) (AP), sodium hypophosphite (SHP) (CP), Peregal O（CP）, deionized water. 2)Instruments: YG541B fabric crease recovery tester, WSB-2 digital whiteness meter, YG026 fabric strength tester, viscometer, RZY-1 thermogravimetric analyzer, HH-8 thermostatic water bath, JA1003 precision electronic balance, M6 sample type drying machine.
Acknowledgements This material is based upon work supported by the Scientific and technological support projects of Suzhou City, Jiangsu Province, China (grant no.
Reference [1] CAO WL: ‘Discussion on the present situation and problems of non formaldehyde finishing’,Journal of Silk,2001,6,12–14
[3] QiangXH and Wang Z et al: ‘Process condition of silk glue and product characterization of modified glutaraldehyde’,Sericultural Science, 2013,4,745–750
[5] Liu JQ and Shao JZ:‘Three groups of crosslinking agent on silk sericin fixation ’,Journal of textile research, 2000,5,279–282 [6] Xu L:‘Effect of fixing agent SE on wrinkle resistance of silk fabrics’, Journal of Silk,2014,4, 11–14.

The Efficiency of Endodontic Retreatment through Direct Crown Access Mugur-George Popescu1,a, Diana Marian1,b*, Teodora Ştefănescu2,c, Aurora Antoniac3,d,Teodora Eva Lucaciu Lupulescu1,e, Radu Elisei1,f, Elisabeta Vasca1,g 1Faculty of Dental Medicine, Vasile Goldiş Western University, Bd Revolutiei no. 94, Arad, Romania 2Department of Dentistry, University of Oradea, Piata 1 Decembrie no.10, Oradea, Romania 3Faculty of Materials Science and Engineering, University Politehnica of Bucharest, Splaiul Independentei no. 313, district 6, Bucuresti, Romania agugupopescu@yahoo.com, bdr.diana.marian@gmail.com (corresponding author), cprestigedent@yahoo.com, dantoniac.aurora@gmail.com, eteodora_lupulescu@yahoo.com, felisei_gabriela@yahoo.com, gelisabeta.vasca@yahoo.com Keywords: endodontic retreatment, periapical index, crown access Abstract.
Materials and Methods From 2012 to 2016, 148 patients, with ages ranging from 18 to 65, were retreated endodontically. 74 treatments were performed through mechanical rotary treatment, and the other 74 through reciprocal mechanical treatment.
They are being used in crown-down technique, only for soluble material removal.
Multivisit Treatment, Journal of Endodontics, 25(5) (1999) 345-350
[4] Thomas M.B.M., Hayes S.J., Gilmour A.S.M., Radiographic evidence of postoperative healing 12 years following root canal treatment – a case report, British Dental Journal 203(8) (2007) 635 – 639

It would be helpful if a mesoscale is introduce into the research interests, such that in the new scale mechanical anisotropy of polycrystal materials is concerned, while the material continuity and homogeneity are kept.
Orthotropic material is that through any point of the material there are three perpendicular planes of symmetry; the direction perpendicular to the symmetry plane is the elastic principal direction, and in the elastic principal direction, the elastic properties of materials are the same.
In one model, the material is considered as all uniform, continuous and isotropic materials in traditional macroscopic scale, however, in the other model, the material is considered as orthogonal anisotropic in mesoscopic scales.
While, mesoscopically, taking the orientation differences of grains and anisotropy in a grain of a polycrystalline materials into account would be helpful for people to have a better understanding of the mechanisms inside on plastic, the damage, fatigue and fracture in polycrystalline material, so as to further their design and implementation of the machining process of polycrystalline materials.
Based on Voronoi diagram of crystal plasticity finite element polycrystalline geometry model [J], Journal of Materials and Metallurgy. 2009,(8):193-216

Introduction Composite materials are formed from two or more materials producing properties that could not be obtained from any one of comprising materials.
As a result there is a great demand to machine these materials during fabrication works.
Properties of stacked materials are illustrated in Table 1.
Composite Science Technology 2007;67:1939–45 [3] A.M.
Paulo Davim,in: Drilling of fiber reinforced plastics: A review , Journal of Materials Processing Technology 186 (2007) 1–7 [4] E.

The conductivity of this kind construction material can reach 1.64 w/mk[2].
Thus, in order to raise the building energy efficiencies, using new insulating materials-Phenolic Resin board combined with green roof to reduce the effect of heat transfer caused by solar radiation on the building interior temperature, and drop the energy consumption of air-conditioning system is a very important topic for energy-saving technology in Taiwan.
Roof Building Materials Internationally, green building materials that reduce the energy consumption for building heating and air conditioning while alleviate the adverse impacts on environment and climate have been promoted for many years. [3].
Acknowledgements The National Science Council of Taiwan supported this research through grant No.
Lee, Journal of Architecture(in Chinese), Vol. 66(2008), p.23-34

Introduction Aluminum alloys are materials which find worldwide industrial applications, including shipbuilding.
Because in the FSW method, welding occurs in the solid state, much less heat is supplied to the joined materials than in the case with conventional welding.
Volpone, Aluminium alloys in third millennium shipbuilding: materials, technologies, perspectives, in: The Fifth International Forum on Aluminium Ships, Tokyo, Japan, 2005
Czechowski, Low-cycle fatigue of friction stir welded Al-Mg alloys, Journal of Materials Processing Technology 164–165(2005) 1001–1006
Balasubramanian, Relationship between base metal properties and friction stir welding process parameters, Materials Science and Engineering A 480 (2008)

The quality related waste are of significant importance as they matter the company in terms of time, material and the hard earned reputation of the company.
Fuzzy group decision making for facility location selection, Information Science, 157, pp. 135-153
Business Process Management Journal 7(3), 251-257
International Journal of General Systems 33(2-3), 259-280
International Journal of operation.