Search results

Introduction Tourmaline, as one most common mineral ions materials , is widely used in environmental protection, electronics, chemicals, light industry and construction materials because of their good far infrared emission, negative ions releasing, micro-current cycling and other interesting properties [1-3].
Materials and Methods In a typical process, 15g negative ion powder (Shijiazhuang, Hebei) was put into 100ml anhydrous ethanol (AR, Tian jin Reagent Co., Ltd.)and the fixture was ultrasonic disperse for 1h.Successively, the mixture was placed in a ball mill jar and high-speed mill for 4h, 8h, 12h, 16h, 22h, respectively.
Journal of tong ji university, 30(2002):183-188 [3] Zhan Jie,Hao Xiao-peng,Liu Hong,Huang Bai-biao,Tao Xutang.
Research progress of natural mineral tourmaline crystal materials [J] Functional Materials., 37(2006): 524-527 [4] Terman M,Terman J .Treatment of seasonal affective disorder with a high-output negative ionizer [J], J Alter Com pl Med, 1(1995):87-92 [5] Terman M ,Terman J ,Ross DC.A controlled trial of tirned bright light and negative air ionization for treatment of winter depression [J],Arch Gen Psychiatry, 55(1998):875-882 ； [6] Nakane H ,Asami O ,Yamada Y ,et al .Effect of negative air ions on computer operation,anxiety and saliverychromogranin A-like immunoreactivity [J], Int JPsychopfsiol,46(2002):85-89 [7] Darrell JH, Mil ka KB.
Mineral chemistry and chemical zoning in tourmalines，Pampa del tamboreo，san luis，argentine .Journal of South American Earth Sciences. 28(2009): 132-141 [8] Zheng Shuilin，Du Gaoxiang，LI Yang，et al.

Wong: Materials Science and Engineering.
Rane, et al.: Materials Chemistry and Physics.
Herbert: Electroceramics Materials Properties and Applications.
Wei: Materials Science and Technology.
Liu, et al.: Journal of Functional Materials and Devices.

SAW device consists of two materials: metallic cap and quartz wafer on to which the filter circuit is etched.
The factor of safety distribution among the various materials is shown figure 1.
The source of the stress concentration is the stiffness and Poisson ratio mismatches of different materials in the specimens.
References [1] Warkentin DJ, Crawley EF, Embedded, Proceedings of AIAA 32nd Conference on Structures, Structural Dynamics and Materials 1991, Baltimore, USA, p.1322 [2] Kim KS, Breslauer M, Springer GS, Journal of Reinforced Plastics and Composites, Vol 11 (1992), p. 949 [3] Sirkis JS, Singh H, Dasgupta A, Chang CC, Proceedings of the ADPA/AIAA/ASME/SPIE Conf. on Active Materials and Adaptive Structures 1992, Alexandria, USA, p. 563
Mechanics of Composite Materials, 45(6), (2009), p. 631 [10] Pohlak, Meelis; Küttner, Rein; Majak, Jϋri, Rapid Prototyping Journal, 11(5), (2005) p. 304

The coating materials was CaHPO4·2H2O- CaCO3 mixture with-400 mesh and Ti powder with 20~40μm.
Huang Chuanyong, Sun Shuzhen, Zhang Zhongtai (2000) Chinese Journal of Biomedical Engineering, 19: 281-287
Zheng Xuebin, Ding Chuanxian (2000) Journal of inorganic Materials, 15 : 897-902
Wang Yingjun, Ling ChengYun, Chen Kai et al (1998) Journal of inorganic materials, 13:529-533
Gao Jiacheng, Zhang Yapin, Wen Jing (1998) CHINESE JOURNAL OF MATERIALS RESEARCH, 12:95-98.

Tugumov, Comparative structural strength research of hardened carbon steel and hot-rolled alloy steel, «IOP Conference Series: Materials Science and Engineering», 142 (2016) 1-8
Maltseva, Influence structure on stress aging of low-alloyed steel, Deformation and rupture of materials, 8 (2014) 9-15
Chandravathi, Effect of isothermal heat treatment on microstructure and mechanical properties of reduced activation ferritic martensitic steel, Journal of Nuclear Materials. 435 (2013) 128-136
Tanigawa, Irradiation effects on precipitation and its impact on the mechanical properties of reducedactivation ferritic/martensitic steels, Journal of Nuclear Materials. 367-370 (2007) 42-47
Fernandez, Grain boundary microchemistry and metallurgical characterization of Eurofer’97 after simulated service conditions, Journal of Nuclear Materials. 329-333 (2004) 274-277

Experimental In our study, the materials of as-cast Mg-3%Ni-x%Cu alloys were prepared by high-purity pure Mg (99.9%, mass fraction), Mg-80%Ni and Mg-30%Cu master alloys.
Lavernia: Journal of Materials Science Vol. 28, (1993), p. 2395 [3] K.
Nishiyama: Materials Technology Vol. 1 (1994), p. 1 [5] D.Q.
Yang: Material Science and Engineering A, Vol. 494 (2008), p. 139 [6] Magnesium Technology, edited by H.E.
Lücke: Journal of Applied Physics, Vol. 27 (1956), p. 583, p. 789

Materials and Methodology The current experimental procedure for this work is condensed as in Fig. 1.
The main purpose of biomass constituent analysis is to investigate the composition of cellulosic materials in BSD.
The extractive contents value depends on presence of water soluble materials (e.g., inorganic materials, non-structural sugar, nitrogenous materials) and ethanol soluble materials (chlorophyll and waxes), associated with the biomass in question.
Tamizi: Journal of Tropical Forest Science Vol. 18 (2006), p. 236
Elsheikh: Journal of Applied Science Vol. 10 (2010), p.1090

Introduction Research on the dynamic fracture toughness of metallic materials is one of frontier topics of Fracture Dynamics.
American Society for Testing and Materials.1974:86-89P
International Journal of Fracture.1998,89:85-102P
A discussion of problems encountered in the dynamic fracture toughness testing of materials.
Journal De Physique Colloque 9.1988,C3:347-352P.

Test specimens and materials Specimens were divided into two concrete strength with C20 and C25 including 55 specimens, which 28 specimens with C20, 27 specimens with C25.specimen size was 100mm × 100mm × 300mm.
Materials and Structures, 1991,24: 425-450
International Journal of Impact Engineering 2008( 35): 319–335
ACI Materials Journal, 1998, 95(6):735~739
Journal of Harbin Institute of Technology, 2003, 35(8): 958-961.

The total resources include raw materials, finished products, equipments, staff, technology, fund and so on.
In addition supply of materials was another key factor to guarantee production efficiency.
Lehmusvaara: International Journal of Production Economics, Vol.78 (2002), pp.187-195
Abdi: Journal of the Franklin Institute, Vol.345 (2008) No.7, pp.731-747
Cheng: Journal of Ningbo University (NSEE), Vol.23 (2010) No.1, pp.73-79 (In Chinese).