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The extraction process consumes little energy and it only produces clean water as waste [[] Geoffrey R Mitchell, Sara Biscaia, Vidhura Subash, Mahendra and Artur Mateus, High Value Materials from the Forests, Advances in Materials Physics and Chemistry 2016, 6, 54–60. ].
Rosin consists of different resinous tricyclic diterpene monocarboxylic acids with a molecular formula C20H30O2 and thus belongs to the diterpenes (four isoprene units) [[] Klemens Fiebach and Dieter Grimm, "Resins, Natural", Ullmann's Encyclopedia of Industrial Chemistry, 2000. ].
Pine rosin is a widely available source of abietic acid, the principle acid, the chemical structure is shown in Figure 2 along with levopimaric acid and pimaric acid.
The increase in the mechanical properties can be explained by percolation as the PCL has a reinforcing effect on the structure by forming a stiff continuous network.

Comparative study on the drying process and fractal dimension of sewage sledge : microwave and air-blast Tianyang Zhai 1,a, Lin Fang2,a 1 College of Civil Engineering, ShenZhen University, Shenzhen, China. 2College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen, China a uclayaya@gmail.com Keywords: sludge, air-blast drying, microwave drying, fractal dimension Abstract: A fractal model simulate the internal structure of the sludge, and on the model deduce that fractal dimension is D and the corresponding pore is r, the porosity is P.
Microwave and the excessive energy of air-blast can be caused by temperature changes in the structure of the sludge that could change the structure of sludge.
Microwave pretreatment of the sludge will destroy the internal structure, and release of water to promote and improve sludge dewatering properties of [4].
The changes of microscopic structure and the fractal dimension were compared and discussed.
Microwave drying can be short-term damage cell structure, releasing bound water, and enhance sludge dehydration rate.

Study on preparation and mechanical intensity of Nano-TiB2/tussah silk fibroin composite membrane Yu-yong peng Eastern Liaoning University Liaoning Dandong China 118000 Email: yuri9444010@sina.com Keywords: Nano-TiB2; tussah silk fibroin; preparation; structure Abstract.
Moderate nano TiB2 by the crystalline structure of silk fibroin transformation from silk I to II.
Generally think of sf have two kinds of crystal structure, namely SilkI and SilkII, of which the main SilkI diffraction peak of 12.2 ° and 28.2 ° or so, and the main SilkII diffraction peak of 18.9 ° and 20.7 ° or so [11].
Nano TiB2 to join make silk fibroin from crystal structure Silk I to Silk II transformation, crystallinity was improved.
Moderate nano TiB2 to join, make sf film compound of crystallinity structure to the silk from silk I transformation, improve the crystalline II, but with the nano TiB2 levels of further increases, it will reduce the crystallinity of film.

The Stability and Regeneration Mechanism of New Visible-Light Responsive Photocatalyst Bi20TiO32 Xuhui Sun1,a, Tao Wang1, b, Lin Sun3, c, Jun Ma2, d 1 Chemical Engineering College, Northeast Dianli University, Jilin City 1320122 2 National Engineering Research Center of Urban Water Resources, Harbin Institute of Technology, Harbin City 150090 3 College of Chemistry, Jilin University, Changchun city 130023 acsxuhui@hotmail.com, byingerlei@sina.com , csunlinrose@hotmail.com, dmajunhit@126.com Keywords: Photocatalyst; Bi20TiO32; Stability; Deactivation; Regeneration Abstract.
There is no change in the XRD of the catalyst after reaction, which indicates that photocatalyst Bi20TiO32 has stable structure.
Results and discussion The stability of the crystal structure.
As shown in Fig.1, it can be found that the catalyst crystal phase has not changed regardless of washing or not, which demonstrates that Bi20TiO32 crystal structure is relatively stable during the reaction.
Fig.5 Regeneration effect of the catalyst by calcination Conclusion The crystal phase of bismuth titanate Bi20TiO32 didn’t change after use, which indicates the structure of the catalyst is stable.

TANG, et al [4] developed a 3D fins structure on the surface of copper tube by pre-rolling plowing.
The fabricated process of fins was analyzed, and the main technical parameters which affected the fins forming and structures were discussed, then the appropriate technical parameters were provided so as to obtain the optimal fins structures.
Results and Discussion The goal of the experiments is to determine the different technical parameters can affect the fins forming and structures.
A lot of the experimental results are shown that the plowing speed affects little on the fins forming and structures.
References [1] BERGILES A E: Advanced enhancement-Third generation heat transfer technology, or the "Final Frontier", Transaction of the Institute of Chemistry Engineering (Part A),Vol 79 (2001), pp.437-444

This is due to the changes in the chemistry of the environment at the metal surface because of the settlement and activities of microorganisms.
The metabolism of microorganisms enclosed in the biofilm induces changes in the local physico-chemistry at the material/biofilm interface, which may influence the corrosion processes.
Lai, Correlation between marine biofilm structure and corrosion behaviour of stainless steels in sea water, in: D.

Synthesis and Photoluminescent Properties of a Zinc（Ⅱ）Complex with Phenanthroline Derivative Lei Guo1,a, Ge Hu1,b, Sheng Wei1,c 1College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China acqglei@163.com, bcqhuge@163.com, ccqwnw@163.com Keywords: Zinc complex, Synthesis, Photoluminescent property, Phenanthroline derivative Abstract.
Its structure, energy band, photoluminescent and thermal properties were charaterized by elemental analysis,1H-NMR, Uv-vis absorption, photoluminescent spectra and thermogravimetric technique．The experimental results showed that the complex had a good thermal stability.UV-vis absorption bands of the complex were located at about 207,276,297nm.
For this reason, to explore novel structure, good luminescence properties metal complexes, we are interested in the design and synthesis of a benzimidazole-based zinc complex.
In the present paper, the synthesis, structure, thermal stabilities and luminescent properties of a new transition Zn(II) complex, namely,[Zn(PIP)2•2H2O](NO3)2 (Chart1B) have been reported.
This is in full agreement with the structures of previously published complexe of the type 2-(2-hydroxyPhenyl)benzimidazole Zinc.[5] It can be seen that zinc ion really happened with the ligand coordination, resulting in charge-transfer absorption spectra , its absorption coefficient increased , the energy decreases, the absorption fell at longer wavelengths.

Results and Discussion Structure and morphology of TiB2 powder with and without acid treating.
H + can be adsorbed into inner space of TiB2 structure.
The escaped H2 or H + from inner structure will make the powder cracked.
H + has different effects on different structures of TiB2 and TiC.
[8] Y.C.Xie and M.C.Shao: Structure Chemistry (People's Education Press, Beijing, 1979)

Based on the coexistence theory of slag structure, the activity model of CaO-SiO2-Fe2O3 ternary slag system was established.
The structure units of Fe2O3 in the molten slag were discussed.
The main structure units of Fe2O3 in molten slag are closely related to the slag basicity.
So, it can be concluded that the main structure unit of Fe2O3 in the molten slag are closely related to slag basicity.
Engineering Chemistry & Metallurgy.

Experimental results reveal that the chemical enhanced silicon final polishing slurry containing FA/O polyamine chelating agent and FA/O nonions surfactant changed the chemistry character of silicon surface, can realize the chemical uniform etch the surface areas with defects and defect-free area, deeply lower the surface microroughness of silicon polished wafer, achieving defect-free with perfect quality of flat mirror-surface.
Fig.1 Pore structure of POLITEX pad, SEM300X Table 1 Polishing parameters for silicon final polishing using E460 polisher Parameter Value Working pressure 7psi Back pressure 0psi Head/Platen Speed 76/80rpm Slurry feed rate 225ml/min Polishing time 180s Results and discussion During the final polishing process, the temperature on the pad surface was under 17~25℃.