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GRA has been applied to a variety of applications, such as decision-making in economics, marketing research [27], medicine, computer science [22-27], system modeling, social science, geometry, chemistry, management, etc. [22-27].
Van Hiele, Structure and insight, Academic, Orlando,1986

Wendorff, Electrospun nanofibers: internal structure and intrinsic orientation, Journal of Polymer Science: Part A: Polymer Chemistry. 41 (2003) 545-553

Influence of pH Value on the Phases, Morphologies and Optical Properties of Sm2S3 Thin Films Hou Yan-chaoa, Huang Jian-fengb, Cao Li-yunc and Wu Jian-pengd Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an Shaanxi 710021, P.R.
SAMs provide a versatile method to control interfacial structures and manipulate surface properties at the molecular level [8-11].

Monitoring of Wear Particles During Running-in Diesel Engines of Tractors Vladimír Höniga, Štěpánka Horníčkováb and Matyáš Orsákc Faculty of Agrobiology, Food and Natural Resources, Department of Chemistry, CULS-Czech University of Life Sciences Prague, Kamycka 129, 16521, Prague 6, Czech Republic ahonig@af.czu.cz, bhornickova@af.czu.cz, corsak@af.czu.cz Key words: running-in, wear particles, ferrography, ferrogram, exploited oil Abstract: The process of running-in machines is a significant period of operation of the machine.
At the same time changing the crystalline structure of the surface layers.

Luan, Investigation of microstructures and fatigue properties of friction stir welded Al–Mg alloy, Materials Chemistry and Physics 98 (2006) 285-290
Debroy, H.K.D.H Bhadeshia, Recent advances in friction-stir welding – Process, weldment structure and properties, Progress in Materials Science 53 (2008)

These can be classified into three types according to the crystal structure, which are: the hexagonal ferrites (SrFe2O4 and BaFe2O4), grenades (Y3Fe5O12) and spinel ferrite (MgFe2O4).
The proportion of each reagent in the mixture followed the concepts of the chemistry of propellants and was calculated in accordance with the valences of reactive elements in order to promote the oxidant/fuel relation= 1 [6].

The Effect of Li-Al Alloy on Combustion Performance of B/PTFE Fuel-rich Propellant Ting Liu*1,a ,Xin Chen2,b, Huixiang Xu3,c, Yongqi Wei4,d, Aijun Han5,e, Mingquan Ye6,f, Gongpei Pan7,g. 1*College of Chemical Engineering,Nanjing University of Science and Technology, Nanjing, China 2College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, China 3Xi’an Modern Chemistry Research Institute, Xi’an, China a*Email:liutingzhaongyangju@163.com;bEmail:chenxinnust308@163.com.
The combustion heat of PTFE is 14.34 kJ/g[4].But In the structure of PTFE, the radius of the fluorine atoms is relatively large.

.%) [9-10], the chemistry of which differs from those of the commercial 9% Cr steels P91 and P92 in a number of aspects: 1) 3 wt.% Co is added; 2) W content is increased to 3 wt.% while Mo is totally removed and 3) C content is reduced to an extremely low level of 0.002 wt.% while the concentrations of V, Nb and N remain largely as they were in P91 or P92 [9].
Surface morphology and layer structure.

Determination of Tryptophan Using Nanocomposite-based Sensor Akbar Islamnezhada, *, Esmaeil Farzaneh Jobanehb Department of Chemistry, Faculty of Science, Islamic Azad University, Rasht, Iran a aislamnezhad@iaurasht.ac.ir, b efarzaneh@gmail.com Keywords: Tryptophan; Linear sweep voltammetry; Nanocomposite; Electrocatalytic effect Abstract.
Recently, Polyaniline (PANI) has captured attention of researchers due to its polymer chain structure with high conductivity, environmental stability and low cost.

Besides that, the plate-like structure of ungrafted chitosan particles oriented parallel to flow direction throughout the composite and deeply embedded in the fracture PVC matrix surface.
Journal of Polymer Science Part A: Polymer Chemistry, 1988. 26(4): p. 985-991