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Sustained Release Properties of Aminophylline Sustained Release Tablets Based on Exfoliated Graphite Lin Gao, Ye Wei College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China carbongl@gmail.com Keywords: Exfoliated graphite, Slow-release material, Sustained release tablet, Aminophylline Abstract.
Introduction Inorganic materials which are used in slow/controlled release field have porous structure and high specific surface area.
Exfoliated graphite, which is made of pure carbon atoms, also has some advantages including good biocompatibility, porous and fluffy in structure, large specific surface area, good absorption performance, environmentally friendly property etc.
Results and discussion Exfoliated graphite has porous and fluffy structure, so the aminophylline solution can be well absorbed by the exfoliated graphite.

Especially, the fabrication of LiMn2O4 single crystalline nanowire was very interesting results because the synthesis of 1-dimesional single crystal structure of LiMn2O4 is very difficult based on cubic crystal structure without anisotropic structure.
However, the synthesis of 1-dimesional single crystal structure of LiMn2O4 is very difficult based on cubic crystal structure without anisotropic structure, although the Na0.44MnO2 based on tunnel structure [5] is easily grown to 1-dimensional direction.
Those nanowires construct the nonwoven fabric structure.
From Fig. 4(a), the top head morphology in the nanowires is a pyramidal structure.
Although the synthesis of 1-dimesional single crystal structure of LiMn2O4 is difficult because it is based on cubic crystal structure without anisotropic structure, the LiMn2O4 single crystalline nanowire is obtained thorough the self template method using Na0.44MnO2 nanowire.

In our study, a new type of Pt/C membrane electrodes, PtCuLaOx heterogeneous structure, in which with developing different La content homogeneously dispersed on the surface of carbonaceous substrates was manufactured by Ion Beam Sputtering (IBS) technology, and also was treated by different annealing temperature in muffle furnace.
In our study, we would raises a new type of Pt/C membrane electrodes, PtCuLaOx heterogeneous structure, in which with developing different La content homogeneously dispersed on the surface of carbonaceous substrates was manufactured by IBS.
It could be seen that Pt(111), Pt(200) and Pt(220) were main diffraction peak of PtCuLaOx membrane, and could mean that the phase composition in these samples was all fcc crystal structure.
Anniyev, et al.: Nature Chemistry. 2 (2010), p. 454 [4] M.

Growth and Characterization of the High Purity C-Mg Thin Films Obtained by Thermionic Vacuum Arc (TVA) Technology MANDES Aurelia1, a, VLADOIU Rodica1, b, DINCA Virginia1, c, and Prodan Gabriel1, d 1 Dep. of Plasma Physics, Faculty of Physics, Chemistry, Electronics and Oil Technology, Ovidius University, Mamaia 124, Constanta, 900527, Romania a amandes@univ-ovidius.ro, b rvladoiu@univ-ovidius.ro, c vdinca@univ-ovidius.ro, dgprodan@univ-ovidius.ro Keywords: Thermionic Vacuum Arc (TVA), C-Mg Thin Films, TEM, Wettability.
We investigated the growth and structure properties of C-Mg thin films obtained for the first time by Thermionic Vacuum Arc (TVA) deposition.
We use for indexing hexagonal structure for Mg [14], and cubic structure for MgO [15].

Finally, the micro-structure and flame resistance were characterized by scan electron microscope (SEM) and vertical burning method, respectively.
Introduction Nanocomposites, made up of epoxy and inorganic materials, have been an important subject of research not only because epoxy is one of the most vital type of thermosetting resins, widely used as surface coatings, adhesives, castings and laminates [1–3], but also because inorganic/epoxy nanocomposites may offer unique properties compared with conventional epoxy-based composites owing to their distinctive size, surface chemistry and topology [4–7].
Moreover, the micro-structure and flame resistance of HT-RP/EP nanocomposite were characterized by scan electron microscope (SEM) and vertical burning method.
The results showed that HT was dispersed in the epoxy matrix evenly and HT was not exfoliated with retaining layered structure.
HT with layered structure have greater surface area and more conducive to fire resistance.

Silica sphere has wide applications not only in the field of physical chemistry dealing with dynamic behavior and stability of particulate systems, but also in industries including catalysts, ceramics, pigments, pharmacy, etc.
Results and Discussion Crystal and Chemical Structure Analysis of Silica Products.
Because all the ten samples have similar XRD spectra, S1 is selected as the example to analyze the crystal structure of the products.
All the ten samples have similar FT-IR spectra, so S1 is also selected as the example to analyze the chemical structure of the products.
Conclusions (1) Silica products with uniform sphere morphology and amorphous structure were prepared by a sol-gel method

However, only few works analyzed the durability performance of this material and in particular related to reinforcement corrosion [18], despite the importance of this topic and its impact on the sustainability of the concrete structures.
This difference in the concrete resistivity, due to the chance in the pore structure, can affect the durability performance of these concrete mixes, particularly the permeability [18].
Green chemistry for sustainable cement production and use.
Green chemistry, 8(9), 763-780
International Journal of Concrete Structures and Materials, 8(2), 157-164

Results and discussions Figure 1 depicts the synthesis and molecular structure of the UV-curable sealant.
The both ends of the molecular structure of the synthesized UV-curable sealant include two C=C bonds which belong to π-electronic structure.
SEM of SiO2 before and after coating.Synthesis and molecular structure of the UV-curable sealant.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)

Introduction Cordierite is a magnesium aluminum silicate with a tetrahedral framework structure (Mg2Al4Si5O18) [1].
The sample's spinel (MgAl2O4) structure was found at 1250 oC.
Potdar et al., A Simple Chemical Co-Precipitation/Calcination Route for the Synthesis of Simulated Synroc-B and Synroc-C Powders, Materials Chemistry and Physics, 123 (2010) 695–699
Sato, Basics of corrosion chemistry, In S.
Sharma (Ed.), Green corrosion chemistry and engineering: Opportunities and challenges, Wiley-VCH Verlag GmbH \& Co.

And its adsorption performance is, in theory, determined by the special surface structure characteristics and the surface chemical properties.
Therefore, the pore structure adjustment and surface groups’ modification of AC plays a very important role in improving the special properties, adsorption and catalytic properties [5].
However, the specific surface area of N2-GAC decreased because reduction modification of thermal N2 would loose the surface structure of GAC, and it consequently caused the block, collapse and destroy of the micro-holes.
Environmental Chemistry, Vol. 20(5)(2001),p.444-448(In Chinese) [12]Yanzhen Fan, Baozhen Wang, Lin Wang et al: J.
Environmental Chemistry,Vol.20(5) (2001),p.437-443(In Chinese) [13]C.