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Dynamics of dental pellicle formation - in vitro analysis of time dependant binding behavior by surface plasmon resonance and the influence of oral therapeutics Doru Vornicescu1,a , Katerina Solanska1,b, Ioana Demetrescu2,c , Matthias Frentzen3,d, Michael Keusgen 1,e 1 Institut für Pharmazeutische Chemie der Philipps-Universität Marburg, Marbacher Weg 6, 35032 Marburg, Germany 2 "Politehnica" University of Bucharest, Faculy of Applied Chemistry and Material Science, Bucharest, Romania 3 Poliklinik für Parodontologie, Zahnerhaltung und Präventive Zahnheilkunde der Universität Bonn, Welschnonnenstr. 17, 53111 Bonn, Germany a Doru.Vornicescu@staff.uni-marburg.de, bSolanska@students.uni-marburg.de, cIoana.Demetrescu@upb-chim.ro, d frentzen@uni-bonn.de, eMichael.Keusgen@staff.uni-marburg.de Keywords: pellicle; saliva; adsorption; hydroxylapatite surface (HAP); surface plasmon resonance Abstract: The pellicle on oral surfaces represents a central interface
The dynamics of pellicle formation, on tooth surfaces and the influence of oral therapeutics on the pellicle structure are fairly unknown.
With the method of surface plasmon resonance (SPR), the formation of salivary pellicle structures on hydroxylapatite (HAP) surfaces covering a very thin (~50nm) layer gold on a glass prism was recorded in real time without labeling or destruction.
Discussion The used analysing technology makes it possible to study the formation of pellicle structures on HAP surfaces in an aqueous setting.
Secondly, the structure of the pellicle might be altered through the agent, e.g., change of the three dimensional structure of the pellicle.

In the field of lightweight structure technologies, the optimization of the structure weight and of the processing implementation is the key of saving raw materials and energy consumption.
Subproject C4 - New biocomposites for lightweight structures.
Merging the researchers’ skills from the institute of lightweight structures and the institute of polymer chemistry in TU Chemnitz, and the institute of wood and paper technology in TU Dresden, the subproject C4 gathers the optimal conditions to be fulfilled.
With those pre-impregnated fibres, the production of lightweight structure is achievable.
Fig. 8: Formation of a multi-layer composite by compression molding With this multi-layer composite, the shaping and the design of lightweight structure, such as a ripped structure, are possible by back-injection molding.

Facile preparation of NiO/Ni nanocomposite and its electrochemical capacitive behaviors Wei-Dong Yina, Gui-Lian Lib* and Xian-Ming Liuc College of Chemistry and Chemical Engineering, Luoyang Normal University, Henan Luoyang 471022, P.R.
The structure and morphology of the samples were examined by XRD and SEM.
The structure, morphology and electrochemical capacitive behavior of the composite are discussed.
The crystalline structures of the samples were characterized using an X-ray diffractometer as shown in Fig. 1.
The structure and morphology of the composite were characterized by XRD and SEM.

methyl methacrylate (MMA) and methacrylic acid (MAA), were synthesized and their chemical structures and thermal behaviors were investigated by using TGA, DSC, FTIR and other methods.
However, this kind of crosslinked structure could be easily cleaved at relatively higher temperatures (around 180 oC) in the presence of strong acids like benzenesulfonic acid [9].
Results and Discussion Copolymers Structures.
The chemistry structures of the copolymers were confirmed by FTIR and 1H NMR.
The acetal structures cross-link the polymer into three-dimensional networks, while shield phenol or carbonyl groups of the polymer, reducing aqueous solubility of the polymer.

Introduction Titanium has been used in areas such as aerospace [1], medicine [2], and chemistry [3] because of its superior performance, which is a combination of corrosion resistance and high strength-to-weight ratio.
However, it yields little quantitative information about the structure normal to the interface.
Ellipsometry is an optical technique for studying the composition and structure of thin film or the optical properties of substrate.
Jandt, Surface structure and composition of flat titanium thin films as a function of film thickness and evaporation rate, Appl Surf Sci. 250 (2005) 252-267
Mahmoud, Structure and Optical-Properties of Thin Titanium Films Deposited on Different Substrates, J Mater Sci. 22 (1987) 3693-3697

Chonga, Tuty Asma Abu Bakara*, Nor Akmal Fadila, Rafaqat Hussainb aDepartment of Materials, Manufacturing and Industrial Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Malaysia bDepartment of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Malaysia Keywords: EPD Electrophoretic Deposition; HA Hydroxyapatite, Multiple Coating, Biodegradable material Abstract.
X-ray diffraction spectrometer (XRD) showed that an amorphous structure of HA was successfully deposited on the AZ31 alloy.
Scanning electron microscopy (SEM) has been used to observe that the morphology of the AZ31 alloy coated with multiple layers of HA has a denser coating structure with improved adhesion at the interface as compared to the single coating layer.
A denser coating structure with greater bonding between the coating layer and the substrate is expected to protect the substrate from a high corrosion rate, thus resulting in a longer period of biodegradation as in implant in the electrolytic environment.
The phase and crystal structure of the coated sample was characterized using X-ray diffraction spectrometer (XRD).

Solvent-free Synthesis of Functional Siloxanes Bearing 4-Trifluoromethylphenyl Group Yasunobu Egawa1,a and Masafumi Unno2,b 1Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan 2 Department of Chemistry and Chemical Biology, and International Education and Research Center for Silicon Science, Graduate School of Engineering, Gunma University 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan anobu_egawa@boc.kuicr.kyoto-u.ac.jp, bunno@chem-bio.gunma-u.ac.jp Keywords: Solvent-free synthesis, Siloxane, Silanol, 4-Trifluoromethylphenyl group Abstract.
These siloxanes or silicones have not only thermal stability but highly-regulated structure and reactivity.

Among the most hazardous defects there are pores, impurities, structural inhomogeneity, inequigranular structure, micro- and micro-cracks.
Appen. - L.: Chemistry, 1976. – 295p

The basic structure of the photovoltaic cell is constituted by a PN junction, using the photovoltaic effect of the light energy into electrical energy.
Beijing: Chemistry and Industry Press, 2005

Synthesis and Application of 1-(2,5-dimethyl-3-thiazolyl)-2-[2-methyl-5- phenyl-(4-vinyl)-3-thiophene]perfluorocyclopentene Fang Duan, Gang Liu and Qing Zhang* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structures of diarylethene 1o were confirmed by NMR. 1H NMR(400 MHz, CDCl3, ppm): δ 1.52 (s, 3H, -CH3), 1.95 (s, 3H, -CH3), 2.56 (s, 3H, -CH3), 5.21 (d, 1H, J = 8.0 Hz, vinyl-H), 5.67 (d, 1H, J = 8.0 Hz, vinyl-H), 6.55-6.67 (t, 1H, J = 8.0 Hz, vinyl-H),7.18 (s, 1H, thiophene-H), 7.36 (d, 2H, J = 8.0 Hz, benzene-H), 7.42 (d, 2H, J = 8.0 Hz, benzene-H).