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Svensson1,d 1Department of Physics/Centre for Materials Science and Nanotechnology, University of Oslo, NO-0316 Oslo, Norway 2Department of Physics, Chemistry and Biology, Linköping University, S-58183 Linköping, Sweden aaugustinas.galeckas@fys.uio.no, bhussein.ayedh@smn.uio.no, cpeder.bergman@ifm.liu.se, db.g.svensson@fys.uio.no Keywords: photoluminescence, minority carriers, lifetime enhancement, carbon vacancy, DLTS Abstract.
Figure 1 presents the proof-of-concept of the new approach in depth-resolved carrier lifetime measurements of 4H-SiC structures.

(CH3)2Si(OC2H5)2 + 2H2O Þ (CH3)2Si(OH)2 + 2C2H5OH (1) Hf(OC4H9)4 Þ Hf(OH)4 + 4C4H9OH (2) ºSi-OH + HO-Hf º Þ ºSi-O-Hf º + H2O (3) Fig.1 The FTIR spectrum of the Si-O-C and Si- Hf-O- C gel Fig.2 The SEM image of the SiOC/HfO2 ceramic composites FTIR analysis (Fig. 1) of the Si-Hf-O-C gel crosslinked at 60 °C shows the absorption bands for C-H at 1388 cm-1 [15], Si-CH3 at 1268 and 853cm-1 [16], Si-C at 803 cm-1, and these functionalities are in agreement with the precursor chemistry of DMDES which has methyl functionalities.
Hou, Fabrication of SiOC ceramic microparts and patterned structures from polysiloxanes via liquid cast and pyrolysis, J.

Figure 1 FT-IR spectra of WCF and modified waste carbon fibers Figure 2 presents the TGA thermograms of WCF and the prepared samples.The structure of the waste carbon fiber that had not been modified by microwave treatment was too stability to be pyrolyzed.The degradation of the surface structuresof the modified samples reduced their pyrolysis temperatures.
Westwal: Ullmannn’s Encyclopedia of Industrial Chemistry 5 ed.Vol.A9 (1985) p. 73 [10] I.

Lemlich: Effect of Vibration on Natural Convective Heat Transfer, Industrial and Engineering Chemistry, Vol. 47, No. 6, pp. 121~127 (1955)
Clementina: Modal Analysis of a Structure in a Compressible Fluid Using a Finite Element/Boundary Element Approach, J.

College of Applied Chemistry, Shenyang Institute of Chemical Technology, 110142 China a baoyir@126.com, bhanliang_2005@163.com, c wangshuju@syict.edu.cn Key words: Sol-gel processing, SiO2 thin film, Ni, high temperature oxidation Abstract.
The well-known duplex scales of NiO change into a three-layered structure gradually with the increasing of temperature, where the outer columnar scale and inner equiaxed layer is separated by a Si-rich region, as shown in Fig.4d.

Studies on the Properties of Banana Fibers-reinforced Thermoplastic Cassava Starch Composites: Preliminary Results Xianzhong Mo1,a ,Yuxiang Zhong1,b ,Chunqun Liang1,c,Shujuan Yu1,d 1 College of Chemistry and Life Sciences, GuangXi Teachers Education University, Nanning, China a moxianzhong@gxtc.edu.cn, b yuxiang_zhong@126.com, cliangchunqun@gxtc.edu.cn, d ysj2007@126.com Keywords: Banana fiber;cassava starch; TPS; composites; properties Abstract: Banana fibers received four treatments, namely squeezing, alkali and hydrogen peroxide treatment, washing with water, and drying.
Fig.5 The effect of fiber contents on thermal stability of TPS. 4.Conclusions As enforcement, banana fiber could effectively improve the tensile strength, elastic modulus and thermal stability of TPS, because of their similarly chemical structure, making a good adhesion between starch and fiber.

It is well known that the dispersion of an active phase on a carbon support depends not only on the surface area and porosity, but also on the chemistry of the carbon surface [11] .
The surface area and pore structure of the activated carbon were determined by a Analyzer (America Micromerities Tristar 3000) on the nitrogen adsorption principle (at 77K).

Effect of 2-Amino 2-methyl 1,3 propanediol on Enteric Properties of Film Prepared from Ammoniated-based Shellac Composite Salts Narumol Meenabun1,a, Chutima Limmatvapirat2,b and Sontaya Limmatvapirat1,c,* 1 Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom, 73000, Thailand 2 Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom, 73000, Thailand a narumol02@hotmail.com, bchutima@su.ac.th, c, *sontaya@su.ac.th Keywords: shellac; salt; solubility; enteric; film Abstract.
Fig. 1 Chemical structure of shellac.

HFCC not only can save a great deal of concrete, and have good economy value, but also can reduces greatly the danger resulting from the structure cracks due to hydration heat of concrete.
In fact, the pozzolanic activities of LSR are made up of two parts: One is chemistry activity, determined by chemical components; another is physical activity, determined by effects of grains.

The back–reflections of Laue XRD patterns confirmed the orthorhombically distorted perovskite structure with Pbnm symmetry for the single crystal samples The magnetic measurements were implemented using the vibrating sample magnetometer (VSM) option of a Physical Property Measurement System (PPMS–9, Quantum Design).
Yamaguchi, Journal of Physics and Chemistry of Solids 35, 479 (1974)