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The Synthesis, Optical Properties and Whiteness Assessment of Twelve/Fourteen Quaternary Ammonium DSD Acid-Triazine Derivatives as Fluorescent Brighteners Maosheng Wan1,a, Ming Xu1,b, Chengbo Cao1,c,* and Zhe Han2,d 1School of Chemistry and Chemical Engineering, Shandong University,Jinan, Shandong, 250100, China 2New Material Institute of Shandong Academy of Sciences, Jinan, Shandong, 250014, China ashmw11258@163.com, bsduxuming@126.com, ccbcao@sdu.edu.cn, dhanzhe@sdu.edu.cn Keywords: Synthesis; DSD acid; Quaternary ammonium; Whiteness assessment.
Because of the common structure, the products have the similar shape of fluorescence emission spectra curve.

It is well-known that CaWO4 crystallizes is tetragonal scheelite structure with space group C4h, in which Ca2+ is coordinated with eight oxygen atoms and has S4 point symmetry with no inversion center.
Handbook of Chemistry and Physics.

The microstructure obtained in welding of steel can be affected by a large number of factors; the most notable among them are the weld metal chemistry (which in turn is dictated by the base metal composition, filler metal composition, the slag-metal reaction and gas-metal reaction), the cooling rate (largely dictated by the process parameters) and any other pre and post weld heat treatments done.
The microstructure needs to be evaluated for its phase composition, grain size, structure & shape as well as any evidence of microsegregation and other defects.

Preparation of Monodispersed Nanocrystalline Titania Using a Simple Synthetic Route Yuan-Qing Li1,2,a , Shao-Yun Fu 1,b, ¶ 1 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China 2 Graduate School of Chinese Academy Sciences, Beijing 100039, China a yqli@cl.cryo.ac.cn, bsyfu@cl.cryo.ac.cn ¶ Corresponding authors Keywords: Preparation, titania, Nanocrystalline, monodisperse Abstract A titania (TiO2) precursor was first prepared by hydrolysis of the titanium complex in acetone solution.
It is clear that the as-synthesized precursor was amorphous in structure with no diffraction peaks.

Synthesis of a New Diarylethene Based on Isoxazole and Benzofuran Units for Polarization Optical Recording Taofeng Wang, Shouzhi Pu*, Shiqiang Cui Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structure of 1a was characterized by 1H NMR (400 MHz, CDCl3, TMS): δ 2.01 (s, 3H, -CH3), 2.17 (s, 3H, -CH3), 2.21 (s, 3H, -CH3), 7.23 (m, 2H), 7.33 (m, 2H).

There's almost no crack existed and a homogeneous structure was observed compared to the KOH contained sample which showed a crack along the boundary between matrix and sand as indicated by Fig.3 (a). 0 10 20 30 40 50 100 150 200 250 300 Compressive strength (Kgf/cm 2 ) Metakaolin content (%) NaOH KOH Fig.1.
[3] Davidovits, J., "Chemistry of Geopolymeric Systems, Terminology", in Geopolymer '99 International Conference. 1999.

Shen 2 1 Swedish Ceramic Institute, IVF, Argongatan 30, 43153 Mölndal, Sweden 2 Department of Inorganic Chemistry, Stockholm University, 10691 Stockholm, Sweden 1 erik.adolfsson@ivf.se, 2 shen@inorg.su.se Keywords: Hydroxyapatite, Zirconia, Composites Abstract Zirconia-hydroxyapatite (40-60 vol%) composites were sintered at different temperatures in air.
This loss of water from the structure reduced the phase stability of the apatite in the presence of zirconia.

For the present materials, the chemistry of the intergranular phase and �-grains was analyzed by energy dispersive microanalysis (EDX) with SEM (Fig. 5).
Herrmann, Structure and Bonding, 102 (2002) 1

Sodium trititanate whisker with larger specific surface area, is fascinating new enrichment material, in the sense that it has special laminated structure[7-8].
[7] S Papp, L Kõrö, V Meynen, et al, Journal of Solid State Chemistry, vol.178(2005),p.1614-1619

Intracellular Trafficking Characteristics for Magnetic Layered Double Hydroxide/DNA Hybrids to Human Gastric Cancer Cells Yue Suna,b , Guojing Goua,b,*Li-e Dong a, b (aDepartment of Chemistry, Ningxia Medical University, Yinchuan 750004, China) (bResearch Center of Medical Science and Technology, Ningxia Medical University, Yinchuan 750004, China) Email: ggj64@yahoo.com.cn Key word: Magnetic layered double hydroxide/DNA hybrids, Intracellular trafficking, Gene delivery ABSTRACT.
After 3 h administration, MLDH/DNA hybrids are detected inside submicron vesicle structures in the cytoplasm of cells (Fig 2 D-c), and others appear to be released from the lysosomal compartments to the cytoplasm (Fig 2 D-b).