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BiFeO3 has a rhombohedrally distorted perovskite structure with the space group of R3c at room temperature.
The BiFeO3 ceramics doped by Co, Mn and Co-Mn still maintained the rhombohedrally-distorted perovskite structure because there were no evident changes in the absorption range around 600-400 cm -1.
Berger, et al.: Progress in Solid State Chemistry, Vol. 35 (2007), p.193

Structure characteristics of aluminum in the brazing beam The Microstructure characteristics of aluminum alloy in the brazing beam were shown in Fig.2.
In the endothermic zone there were a series of changes on the slope of the curve, the changes of curve slope indicated the melting of different structure in the cortex metal.
Surface Chemistry.

Nitroso-R-salt in aqueous solutions for redox flow battery application Zhipeng Xie1, a, Fengjiao Xiong1,b and Debi Zhou1,c* 1College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China azhpxie_06@126.com, bxfjwfj@126.com, cdbzhou_09@126.com Keywords: Redox flow battery, Nitroso-R-salt, RDE, Energy storage Abstract.
So it can be concluded that the structure of NRS is affected greatly by the pH of aqueous solutions.
Consequently, the structure of NRS is changed.

College of Chemistry, Liaoning University, Shenyang 110036 3.
It is one kind of tert-amine which structure is showned as Figure 1: Figure 1 Structure of N235 The extraction reaction can be expressed by the following equation[3] : 2 R3N(org) +H2SO4(aq) = (R3NH)2SO4(org) (R3NH)2SO4 (org)+2 ReO4-(aq) = 2 R3N H ReO4(org) + SO42-(aq) R3N(org) + H+(aq) + ReO4-(aq) = R3N H ReO4(org) (1) Where (aq) and (org) refer to the aqueous and organic phase respectively, and R3NHReO4 is the extraction complex .

Research on measuring methods on explosion seismic waves Hao Chen 1, a *, Deren Kong 2, b, Xiao Tong 2, c, Fan Yang 2, d, Liping Li 2, e 1 Xi 'an Modern Chemistry Institution, Xi’an 710065, China 2 Nanjing University of Science and Technology, Nanjing 210094, China a343843209@qq.com, bderenkongnj@sina.com, c1032651674@qq.com,dyangfan_njust@163.com, elilipingup@163.com Keywords: explosion seismic wave; air explosion; acceleration Abstract.
When installing sensor, firstly 3 sensors are fixed on a steel structure.
Then fix all of the steel structures to mounting plate.

Panchenko1,g, 1National Research Centre “Kurchatov Institute”, Moscow, 123182, Russia 2Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, RAS, Moscow, 141700, Russia 3Institute of Physics and Technology, RAS, Moscow, 117218, Russia agraul@list.ru, bcherepanov_vm@mail.ru, cChuev, dpolikarpov@imp.kiae.ru, emax.nikitin@gmail.com, fdeyev@ibch.ru,*corresponding author Keywords: Mössbauer spectroscopy; magnetic nanoparticles; superparamagnetism; biodegradation.
In the latter case, reducing the size of the magnetic nanoparticles decreases the relaxation time of their magnetization vectors, leading to a collapse of the hyperfine magnetic structure to the quadrupolar doublet.
In opposite case, when the relaxation time is much more than the measuring time of the Mössbauer spectroscopy method, a hyperfine magnetic structure with Zeeman sextet of lines realizes in the spectrum.

Fig.1 RB and acid reaction It can be seen from the figure1, rhodamine B lactone ring structure had been opened to form the carboxylic acid structure under the action of the acid, so that the absorption spectra of rhodamine B and fluorescence intensity increased significantly.
Journal of Photochemistry and Photobiology A: Chemistry 1995, 86(02): 149-154

Both of their two oxides are fluorite-type structure.
And the compound CaCeTi2O7 is isostructural with CaPuTi2O7, adopting the pyrochlore structure [9].
Bloss: Crystallography and Crystal Chemistry (Mineralogical Society of America, Washington DC, America, 1994)

Preparation of TiO2 Nanocrystalline Powder with High Specific Area Using Urea as the Template Yulong Hu1, a, Xiaodong Zhang2, b, Hongfang Liu3, c, Debin Chen1, d and Xiaohong Su1,e 1College of Science, Naval University of Engineering, 717 Jiefang Avenue, Wuhan 430033, China 2Office of Research and Development, Naval University of Engineering, 717 Jiefang Avenue, Wuhan 430033, China 3School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China ahuyl1217@yahoo.cn, bin_your_eyes@tom.com, cliuhf2003@yahoo.com.cn, dcdb1688@sohu.com, esurrey0908@sina.com Keywords: TiO2, High specific area, Urea, Sol-gel method Abstract.
X-ray diffraction (XRD) patterns were obtained to determine the phase structure of the prepared samples using an X’Pert PRO X-ray diffractometer with Cu Kα radiation (λ=0.15406 nm).
This results indicated that the mesoporous structure was formed on the TiO2-U and TiO2-A.

Tenebrio Small-scale Ecological Farming Feasibility Study Haichao Wanga, Hongyan Liaob and Hongling Chenc College of Chemistry and Life Science, Suzhou University, Suzhou, Anhui 234000, China awanghc0823@163.com, blhy111@163.com, cszchl@163.com Keywords: Tenebrio molitor L., Ecology cultivation, Small scale, Research.
Provide efficient and effective bio-organic fertilizer, improve soil structure, promote the development of farming.
Application of insect dung as raw materials and efficient bio-organic fertilizer not only fertility fertility, increased crop yields, improve quality of agricultural products, but also reduce the cost of agricultural production, improve soil structure, improve agricultural ecological environment and promote sustainable development of farming.