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Control samples (bottom), which have not been exposed to “N2 conditioning” reveal that the source of nitrogen in the oxide bulk is induced by the CVD chemistry.
Kimoto, Enhanced channel mobility in 4H-SiC MISFETs by utilizing deposited SiN/SiO2 stack gate structures, Mater Sci.
Tochihara, Atomic-layer-resolved bandgap structure of an ultrathin oxynitride-silicon film epitaxially grown on 6H-SiC(0001), Phys.

The Properties Research of Hafnium Plate for Control Rod Huang Hong-wena, Mi Xiang-miaob, Zhou Shanc Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900,China aHuanghongwen@sina.com, bmxm04@126.com, czhoushan666@sina.com Key words: Hafnium plate, Elemental composition, Mechanical property Abstract: Metallic hafnium has good comprehensive performance that makes it the preferred material for control rods of nuclear reactors.
Table 1 Chemical Composition of Nuclear-Purity Hafnium (mass,ppm) Elements Mg Al Si Ca Ti V Cr Mn Fe Co ASTM Standard / 100 100 / 100 50 100 / 500 / M* Top part <0.05 0.30 2.2 0.35 8.5 0.03 0.62 0.01 2.0 0.009 Bottom part <0.05 0.06 0.3 0.01 3.1 0.02 0.24 0.003 1.5 <0.005 Elements Ni Cu Zr Nb Mo Sn Ta W U N ASTM Standard 50 100 M* 100 20 50 200 150 10 100 M* Top part 0.15 0.85 6021 47 1.4 0.07 170 4.9 <0.005 20 Bottom part 0.16 0.33 7357 0.94 0.06 0.08 160 0.7 <0.005 20 Elements C O ASTM Standard 150 100 M* Top part 50 30 Bottom part 50 30 M*=measurement Mechanical Property The mechanical property of hafnium relates with many factors, as material smelting, machining technics, heat treatment, material structure, crystal size ,impurity content, the shape and the geometry size.
This paper provide reference for domestic control rods hafnium in forging, structure defect control, heat treatment, rolling technics and mechanical machining performance aspects.

As a typical rigid-rod polymer, PPTA exhibits poor solubility in common organic solvents. [1-2] In order to increase the solubility of PPTA, Takayanagi, Young and other researchers have prepared N-substituted PPTA.[1,3] Burch et al. found that PPTA films with good properties can be prepared by the aramid polyanion chemistry. [4] Russo et al. measured molar mass distribution of N-allylated derivative by SEC.[5] Takayangi et al. used a chemical method to modify the surface of Kevlar’s fibers’.[6] In this report, we modified various PPTA with an inherent viscosity (of 4.6 to 9.0dL/g in H2SO4) using bromoalkane with diverse chain length，and the structure and properties of the product were characterized.
Results and discussion Structure of N-alkyl PPTA and substitution degree Fig.1.

Preparation and Magnetic Properties of α-MnO2 Nanoparticles Baoling Zhu1, Qiherima1, Li Lv2 and Xiaojing Wang1,b 1 College of Chemistry and Chemical Engineering, Inner Mongolia University, Huhehaote city 010021, P.R.
Table 1 The average size of the α-MnO2 particles synthesized at the different temperature Reaction temperature Sample Particle size (nm) 160°C MnO140 22.0 180°C MnO160 27.0 200°C MnO180 27.4 220°C MnO200 28.6 The structure information and component of samples were identified by the FT-IR spectra.
Ferromagnetic property of nano MnO2 at the low temperature was assigned to the defects in the crystal structure, particularly the absence of oxygen.

In situ Polymerization Approach to Magnesium Hydroxide-Reinforced PA6 Composites Lili Xu1, Yuhao Deng1, Ye Wang1, Changhua Liu2, Shengpeng Liu1，a，* 1 Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China 2College of Chemistry and Chemical Engineering, Southwest Uinversity, Chongqing 400715, Chian aliuabss@163.com, *Corresponding author Keywords: Magnesium hydroxide; Polyamide 6; in situ Polymerization; Mechanical property Abstract.
The chemical structure, morphology and mechanical properties of PA6/MH nanoparticles were examined.
Fourier transform infrared (FTIR) spectroscopy was applied to characterize changes in the chemical structure of modified MH particles by VERTEX 70 spectrometer (Bruker, Germany).

The first peak appears just enter the MSZ. plenty of sulfide appeared in the core leads to ascending of content of Cu and Ni, but the grades of PGE are extraordinary low here depends on chemistry analysis.
Sulfide can be found in 1.5-8 meters ore deposit in disseminated structure.
Pyroxene with the structure of hypidiomorphic -xenemorphic granular are over 90% in the rock, while the content of xenemorphic granular plagioclase is about 5%-10%.

Sheet Polymeric Iron (Ⅲ) Porphyrin Complexes Catalytic Oxidation of Styrene With Molecular Oxygen LI Xiaodong1,2,a, WANG Xiaofeng1 ZHU Yuancheng1, AN MeiMei 3 1College of Life Science and Chemistry, Tianshui Normal University, Tianshui, 741001, China 2Key Laboratory for New Molecule Material Design and Function of Gansu, 741001, China 3College of literature and history, Tianshui Normal University,Tianshui 741001, China a lixxxd@163.com Keyword: PFe(Ⅲ)TPP complex; catalytic oxidation; molecular oxygen; styrene Abstract: The sheet polymrtic iron (Ⅲ) porphyrin complex [PFe(Ⅲ)TPP] was prepared and charactrtized by FT-IR, TG-DTA and DTG, SEM and XPS.
Furthermore, polymeric porphhyrin structure supported active transition metal centre can expand rapidly as the advantages were excitated from ease of handling, recovery, separation and recycling.
It is found that TPP exhibited the polyhedral structure, however, PFe(Ⅲ)TPP exhibited the special space geometry.

Synthesis of an Akt Inhibitor-IV Analogue via an Amine-Exchange Reaction Chengjun Wanga, Shanshan Gongb, Qi Sunc,* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University 605 Fenglin Avenue, Nanchang, Jiangxi 330013, PR China aemail: wangchengjun_1989@163.com, bemail: gongshanshan33@gmail.com cemail: sunqi96@tsinghua.org.cn Keywords: Akt inhibitor; Amine-exchange reaction; Benzimidazole; 1-Phenylpiperazine Abstract.
In recent reports, piperazine structure unit has been introduced to numerous Akt inhibitors [15–17].
In this paper, N-methylphenylamino group at the end of the Akt inhibitor-VI structure was efficiently modified with 1-phenylpiperazine via an amine-exchange reaction.

Wood structure strength of the D field.
Analysis of furniture structure strength and calculation method on data compilation.
Research on [J]. chemistry and adhesion, diisocyanate and aqueous polyvinyl alcohol adhesive based crosslinking reaction of toluene 2001, (5): 197 ～ 199

Improved Stabilities of Lipase by Immobilization on Eupergit C Bin WANG*, Chunyong ZHANG, Xiuying HU, De MA, Li SU and Quanfa ZHOU School of Chemistry & Environmental Engineering, Jiangsu University of Technology, Changzhou, China wangbin@jstu.edu.cn Keywords: Lipase; Immobilization; Eupergit C Abstract.
The improvement of therastability by Eupergit C immobilization involved multi-point attachments which tend to stabilize the three-dimensional structure of the enzyme at elevated temperatures [8].
The higher relative activity of immobilized lipase than that of lipase in free compartment due to the protection of carries and preventing the disruption of the enzyme-bound water essential to maintain the three-dimensional structure of the enzyme for catalysis as the polar solvents tend to strip water from enzyme molecule [4].