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Dudea1,f Department of Prosthodontics and Dental materials,Faculty of Dentistry, University of Medicine and Pharmacy “IuliuHatieganu”, Clinicilor 32 Street, Cluj-Napoca, Romania 2 Faculty of Mathematics and Computer Science,Babeş-Bolyai University, 58-60 TeodorMihali Street,Cluj-Napoca, Romania 3 Department of Statistics, Babeş-Bolyai University, 58-60 TeodorMihali Street,Cluj-Napoca, Romania abogdanculic@yahoo.com (Corresponding author), b perfidioara@yahoo.co.uk, ccristina_gasparik@yahoo.co, dcarina_gavrila@hotmail.com, ecristian.dragos@econ.ubbcluj.ro, fddudea@umfcluj.ro Keywords: dental color, color parameters,spectrophotometer, digital photography, CIE Lab Abstract In this study we evaluate a new computer software (Toodent) aimed to calculate tooth color parameters from digital images taken in a general practice working conditions.
Material and methods 26 digital images of the VitaPan 3D Master (3DM)shade tabs (Fig.1) were taken using aphotographic system: body Canon 400D, Canon 100mm lenses, and CanonMR14-EX ring flash.
Journal of Prosthetic Dentistry 2007; 97:200–8
Lee, Dental shade matching using a digital camera, Journal of Color and Appearance in Dentistry 2012, Volume 40, Supplement 2:3-10
European journal of Esthetic Dentistry;5(2):204-215

Research on the Overlying Strata and Grouting Range Structural Mechanics Model of Abscission Layer Grouting Wenyu Lv 1,2, a, Zhihui Zhang 3,b 1 School of Energy Engineering, Xi`an University of Science and Technology, Xian, Shanxi Province P.R.China 710054 2Technology Center, Sichuan Coal Industry Group Co., Ltd., Chengdu, Sichuan Province , P.R.China 610091. 3School of economics and management, Tsinghua University, Beijing, P.R.China,100083 alvwenyu@xust.edu.cn, bzhangzh.07@sem.tsinghua.edu.cn Keywords: Abscission layer grouting, environmental protection, structural mechanics model, overlying strata, grouting range Abstract.
Abscission layer grouting is a new filling technology of surface subsidence control, it can protect environment because of using mine waste as filling materials, The paper establishes the overlying strata structural mechanics model of abscission layer grouting, it analyzes the main influence factors of overlying strata abscission layer development and the relationship between overlying strata structure and abscission layer, it also establishes and studies the grouting range structural mechanics model of abscission layer grouting.
Now abscission layer grouting is at the start stage in China, its theoretical basis, applicable conditions, flow process, material selection and other aspects remain to be further researched, so it can become a complete system of surface subsidence control.
Chinese Journal of Rock Mechanics and Engineering.

Graphene research had be divided in three sub-areas: (i) the characterization of the special physical properties that are originating from the 2D nature of the material and its special electronic band structure, (ii) device applications, and (iii) the materials science of graphene, making and processing of graphene wafers, doping of graphene by impurities, and interface formation between graphene and dissimilar materials [2].
Journal of Electroanalytical Chemistry (2012)
Solar Energy Materials & Solar Cells 96 (2012) 281–285 [5] Y Yao.
Science (2004),306, 666-669
Gopalan, Fabrication and Characterization of Large-Area, Semiconducting Nanoperforated Graphene Materials.

Miha�4 1Faculty for Metallurgy and Materials, Zenica, Bosnia and Herzegovina 2 Educational and Pedagogical Institute, Tuzla, Bosnia and Herzegovina 3Federal Meteorogical Bureau, Sarajevo, Bosnia and Herzegovina 4 Faculty of Sciences, Dept.
� .Drobac for his support in the development of the Laboratory for Metal Physics, Faculty of Science, University of Sarajevo.
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Introduction The field of composite materials has progressed greatly over the last few decades, as shown by the widespread use of composite materials in the fields where structures’ lightweight design is a major concern [1].
Composite materials routinely consist of several different kinds of materials.
Thus, greater attention has been paid to the utilization of kind of materials.
However, most of organic materials inherently share relatively poor mechanical properties after being exposed to corrosive environment.
Sutton: an aluminum statue of 1893: Gilbert’s Eros, Journal of Institute of Metals, vol.60 (1938) 67-74

Up to now, a lot of numerical simulation study and theoretical analysis on mechanical behavior of the fiber-reinforced composite materials have been made.
Composites Science and Technology, 2003, 63:1481–1493
Composites Science and Technology, 2003, 63:1815–1832
Aerospace Materials & Technology, 2012,(6):24-28, (In Chinese)
Journal of Reinforced Plastics and Composites, 1991, 10:331-355 [6] ANSYS Modeling and Meshing Guide.

Introduction As an engineering material such as rock and concrete widely used in human activities, crack failure of quasi -brittle material have threatened to human life and property, This is because there are natural or man-made inner micro defects, the damage characteristic feature is the fracture of the sudden.
Therefore, it is particularly important to study of the quasi -brittle materials crack.
At present the calculation of the quasi -brittle materials crack for the many numerical methods, the most commonly used is the finite element method.
Acknowledgements This work is supported by National Natural Science Foundation of China (Grant No. 51104026 and 41172265) and the Dalian Science and Technology Foundation (No. 2009J22DW033).
International Journal for Numerical Methods in Engineering, 1997, 40: 727―758

Fig. 1 The schematic diagram of Steel ball cold heading forming mould The material of Simulation is GCr15.
Material model as PLASTC_KINEMATIC.
Grain refinement mechanism analysis and experimental investigation of equal channel angular pressing for producting pure aluminum ultra-fine grained materials.
Materials Science and Engineering A, 437(2006)281-292 [2] Belytschko T, Organ D, Krongauz Y .
International Journal for Numerical Methods in Fluids, 21(1995)901-931 [4] Guan Yanjin, Zhao Guoqun, Wu Xin, Lu Ping.

The engineering foundation data in BIM model provides the effective support for construction enterprise of detailed planning on material, machine and labor force.
The basic attribute information of procured material can be quickly obtained from component list automatically generated from model before material be purchased.
Combined with the progress plan of construction project, the detailed stocking material plan can be worked out.
A reasonable approach sequence and stacking position in site will be determined in order to avoid loss of delay work caused by shortage and waste derived from the material accumulation.
[5] Sun Junlin: Study of the High Efficiency about the Information Management of Modern Construction Project, Journal of Kunming University of Science and Technology (Science and Technology).Vol. 29(2004), p.73-80.