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Synthesis and characterization of acrylamide based benzoxazine Bakangura Erigenea, Luo Zhongyu, Wang Guangkai, Yang Bin, Yue Yanping, and Lin Xiaodanb College of Materials Sci. and Eng., South China Univ. of Tech., Guangzhou 510640, PR China abaka.eri@hotmail.com, bmcxdlin@scut.edu.cn Keywords: benzoxazine, acrylamide-benzoxazine, ring openning curing, thermal polymerization, solvent effect Abstract.
Different strategies taken to design suitable benzoxazine include preparation of monomers with addition functional group, blending, incorporation of benzoxazine structure to other polymers and hybridization with inorganic materials.
Experimental Materials Phenol, 2-allylphenol, paraformaldehyde and aqueous formaldehyde solution (37%) were purchased from Fuchen chemical reagent.
Acknowledgement We appreciate the support of Chinese scholarship council (CSC) for graduate fellowship and thanks to the support of the Science Foundation for Universities and Institutions of Dongguan City, P.
Ishida1., Journal of polymer science Part A: POLYMER CHEMISTRY, 49, 4335–4342 (2011)

He, Materials Protection, Vol. 36(2003), p9-11(In Chinese) [2]H.B Qi, M.
Z Guo, Y.D He, Corrosion Science and Protection Technique, Vol. 14(2002), (2), p113(In Chinese) [3]T.F Li: Metal oxidation in high temperature and hot corrosion (Chemical Industry Publisher, China, 2003) (In Chinese) [4]X.G.
He, Journal of Chinese Society for Corrosion and Protection, Vol, 23(2003), p 171-174(In Chinese) [5] X.G.
Li, J.W.He, Materials letters, Vol, 60(2006), p339-344 [6]H.
Saito, Materials Science and Engineering, A 329-331(2002), p589-595 [7]R.

Model Design of Universal Open Intelligent Classroom Teaching Software Yan Yu 1, a, Jianhua Wang 1,b* 1Institute of Computer Science and Information Engineering,Harbin Normal University, Harbin 150025, China ayuyan9999@vip.qq.com , bWJH@vip.163.com (*Corresponding author.
In 70’s, CAI was featured by generating system which can automatically generate questions and answers of teaching materials and can give limited evaluation on student’s answer.
Without the support of inference mechanism and student model, it can’t determine the knowledge level and acquisition level of students, provide appropriate learning materials based on their will and comprehensive ability, and develop individualized education with appropriate guidance.
Most PPTs are filled with more texts but less pictures, more static contents but less dynamic ones; more repeated teaching materials from the textbooks but less supplementary, and more weary contents but less interesting ones for students.
Journal of Nanjing University of Aeronautics & Astronautics (Social Sciences), 2001,12 (3) : 86-88

Methodology Materials.
Reservoir Engineering Handbook: Elsevier Science
SPE Journal
Relationship between Foamability and Nanoparticle Concentration of Carbon Dioxide (CO2) Foam for Enhanced Oil Recovery (EOR) Applied Mechanics and Materials Vols. 548-549 (2014) pp 67-71
Applied Mechanics and Materials, 548-549, 1876-1880.

Materials and methods 2.1.
Materials Characterization The cation exchange capacity (CEC) composition of zeolite and charcoal samples are shown in Table 4.
The negative surface charge of organic materials provides sites for retention of nutrient cations [34].
Journal of environmentalist, 30, 273-278
Science of the Total Environment, 394, 237-243

Using biodegradable materials.
Using recycled and/or recyclable materials. - Prioritizing the use of low-impact materials considering the largest possible number of stages of the product life cycle
DFA, DFD, DFM and DFRR … Strategy DFE - Plan End-of-life Production Avoiding the union of incompatible materials. - Facilitating the disassembly and separation of materials
DFD and DFR Identifying the materials that compose the products. - Positioning data about materials visibly and preferably directly on the product.* - Providing information to the user about the correct disposal of the product.* - Identifying materials according to ISO14021:1999.* - Providing additional information such as number of recycling made ​​or additives used in the composition of the materials.
The evaluation of the products presented in the three cases, the excessive use of materials besides incomplete information about the materials used and the correct way of disposal.

Cool roofs are characterized by materials having: high solar reflectance (SR) and high thermal emittance (TE).
The former expresses the ability of the materials of reflecting most of the incident solar radiation during daytime, keeping their surfaces cooler respect to conventional construction materials.
The high thermal emittance allows the materials to radiate away the heat stored in the structure, mainly during night time.
Optimizing roof materials can play a vital role in solving this problem.
Bretz; "Preliminary Survey of the Solar Reflectance of Cool Roofing Materials," Energy and Buildings, Vol. 25, 149-158 (1997)

Materials and preparation of samples For the production of test bodies, the composition of quartz sand and FBCFA was used as a source of siliceous materials, while 20 percent of weight of sand was replaced by FBCFA.
Basic chemical composition of the raw materials is displayed in Table 1.
Acknowledgement This was financially supported by the Czech Science Foundation within project No.
FAST-S-17-3874: “Unique analytical methods for assessing the relationship between properties and structure of building materials based on alternative raw materials“.
Cement-brick waste blends, In Journal of Thermal Analysis and Calorimetry (2004) 75: 197

Material Constitutive Models and Parameters.
The material of piles and pile cap is reinforced concrete which obeys a linear elastic constitutive model and the dimensions and the material parameters for piles and pile cap are listed in Table 3 and Table 4, respectively.
Acknowledgement The financial support of this work by the National Natural Science Foundation of China (Contract No. 50978182) is gratefully acknowledged.
Pile behavior—consequences of geological and construction imperfections[J], Journal of Geotechnical and Geoenvironmental Engineering, 2005,131(5):538–563 [3] S.
Three dimensional finite element analyses of the behavior of pile foundation with defective piles under vertical loadings[J], Sichuan Building Science, 2007, 33(6): 90-93.

(8) On the other hand, the fields at a material point may experience strong discontinuity by the sudden appearance of the disturbance caused by the traveling crack.
Science, 284, 1337-1340. 5.
Journal Applied Mechanics, 68, 169-175. 7.
Simulating materials failure by using up to one billion atoms and the world's fastest computer: Brittle fracture.
National Academy of Sciences USA 99, 5777-5782 9.