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Introduction Nanoparticles are acted as additives in the lubricant abroad because they have a series of especial physical chemistry characters [1].
Ion diffusing technology endow the surface of workpiece with especial properties such as wear resistance, fatigue resistance and corrosion resistance properties and so on by changing the chemical composition and structure of the materials of the workpiece surface, and is applied abroad[7].
Results and Discussion Morphologies and Structure The SEM mophylogies of FeS solid lubrication duplex layer and n-Al2O3/FeS solid lubrication duplex layer are shown in Figure 1.
It can be seen in Figure 1(a), the FeS solid lubrication duplex layer has loose structure, and the sulphide grains dimensions are very fine and in micron nano scale.
Chemistry Online, 2003, (6):404-409.

Synthesis and Light-Emtting Diodes Properties of Two New Fluorene Based Copolymers Jianhua Huang1,*, Xianghui Ye2,*, Chuanlang Zhan1,a, Gui YU2,b, Yunqi Liu2, and Jiannian Yao1,c 1 Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China 2 Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China aclzhan@iccas.ac.cn (C.Z.), byugui@iccas.ac.cn (G.Y.) cjnyao@iccas.ac.cn (J.Y.)
In order to realize full color display, several conjugated backbone structures such as poly (p-phenylenevinylene) (PPV) [3], poly (p-phenylene) [4], polythiophene (PT) [5], and polyfluorene (PF) [6] have been developed.
They exhibited promising performances in Polymer solar cells (PSCs) [15b,16] and organic thin film transistors (OTFTs) [15a] due to their symmetric, rigidly fused, coplanar structure, and strong electron-withdrawing properties.
Those arylene-imide moieties should largely extend the conjugation, alter band energy levels, and robust light emission when incorporated with fluorene unit, due to their well-defined structures and strong electron-withdrawing properties.

It is non-toxic, harmless, is the only renewable and sustainable utilization of "green materials" [1-5] with energy saving features and the role of optimizing the social structure of the material [6].
Phenolic hydroxyl groups in lignin structure is a very important group, their physical and chemical properties, reactivity and the characteristics easily removed from the pulp play a significant role when alkaline cooking, the pulp containing the phenol-type structure has a great influence on pulp brightness and brightness stability[7].Trace elements affects both wood directly and pulp and paper.
Lv, Q.Cao and Y.Q.Xie:Chemistry and Industry of Forest Products, Vol.28 (2008),p66
[10] S.H.Yang : Plant Fiber Chemistry(China Light Industry Press ,2001)

Combustion Synthesis of CaMoO4:Eu3+, Li+ Red Phosphors Using Urea-thiourea Mixture Fuels Xia Wanga, Yu-zhi Fengb, Gui-hua Pengc, Zhen-hua Liangd, Xiao-bao Hane State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin, Guangxi, 541004, China a409145367@qq.com, b727780934@qq.com, cpengguihua164@163.com, dliangzh@mailbox.gxnu.edu.cn, e313457758@qq.com Keywords: Phosphor, CaMoO4, Combustion synthesis, Mixture fuels.
Eu3+ doped calcium molybdate (CaMoO4) with tetragonal scheelite-like structure have attracted much attention for their excellent thermal and chemical stability [5,6].
No impurity lines were observed, and all the reflections can be indexed to the scheelite structure of CaMoO4 single phase, of which the crystal group is I41/a.
These phosphors fundamentally maintain the characteristic of scheelite structure, which are not obviously effected by adding thiourea.

Aziz4,h and MOHAMAD Rusop Mahmood5,6,i 1Nanotechnology Research Centre, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Malaysia 2Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Malaysia 3Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Malaysia 4Advanced Rubber Technology Unit, Technology & Engineering Division, Malaysian Rubber Board, RRIM Research Station Sg.
However, a few residual oxygen functional groups attached on the layers have disturbed the graphene structures and significantly reduces the electronic properties of graphene.
This was due to the high attachments between tails of SDS and graphene structure that have properly stabilized the graphene sheets in the solution.
Usually, the ID/IG ratio of graphene powder is greater than 1 caused by the defects and partially disordered structures of the sample [9].
Chen, Graphene and graphene-based nanomaterials: the promising materials for bright future of electro analytical chemistry, Analyst 136 (2011) 4631-4641

In recent years photocatalysis was seen as effective mean for complete mineralization of phenol by photoexcitation mechanism that releases hydroxyl radical to break phenol’s benzene ring structure [1].
The structure of the Zn/TiO2 composite consists of large, agglomerated particles due to positioning of Zn particles in the network that reduced the repulsion between TiO6 units.
It was surmised that agglomerated structure of Zn/TiO2 composite contributed to efficient photoactivity resulting effective phenol degradation.
The Journal of Physical Chemistry A, 2011. 115: p. 13211–13241
Journal of Photochemistry and Photobiology A: Chemistry 2008. 194 p. 11–19.

The structure of SVM calibration model.
The basic structure of SVM calibration model is shown as Fig.2. …… …… Fig.2 SVM calibration model structure diagram The analysis process of SVM calibration model.
References [1] LU Wan-Zhen,YUAN Hong-fu,XU Guang-tong,et al.Modern near Infrared Spectroscopy Analysis Technology.China Petro-chemistry Press,Beijing 2000
[5] TANG Shou-Peng,YAO Xin-Feng,YAO Xia,et al.Chinese Journal of Analytical Chemistry, 2009,9(10):1445
[11] CHU Xiao-li,YUAN Hong-fu,LU Wan-zhen.Progress in Chemistry,2004,16(4):528-542

The duplex structure was characterized by EDS mapping in a previous paper [11] and consists of a (Mn,Cr)3O4 spinel top layer and a Cr2O3-rich inner layer.
Fig. 3c) and d) indicate that the internal structure of the nodule is layered in shells.
Strong variations of grey levels reveal a complex chemistry and microstructure linked with the presence of heavy elements such as Nb.
The microstructure and the chemistry of nodules have been studied in a former paper dedicated to SEM EDS analysis [11].
Sears, Exploration of alloy 44A chemistry for solid oxide fuel cell interconnect application, J Power Sources. 195 (2010) 813-820

It is realized by material itself which have reversible chemical reaction molecular structures or macromolecular diffusion of a polymer.
By optimizing the process conditions, the curing agent rapidly forms a cross-linking structure on the surface of the droplets, reduces the diffusion of the curing agent, and prolongs the storage period of the microcapsules.
[2] Wang X F , Zhang J H , Zhao W, Han R, HanN X, Xing F, Permeability and pore structure of microcapsule-based self-healing cementitious composite, J.
Materials Chemistry & Physics, 171:267-275, 2016
ACS Sustainable Chemistry & Engineering, 2017:acssuschemeng.7b01850

Barcelona, Spain 2Department of Materials Science and Physical-Chemistry.
Faculty of Chemistry.
Robocasting of dense yttria-stabilized zirconia structures.
Direct ink writing of zirconia three-dimensional structures.
Journal of Materials Chemistry C, 24 (2017).