Search results

Reducing the defectiveness of the structure increases the strength of the crystals.
The main approach of this work is based on transdisciplinary research, taking into account the achievements of materials science, geology, chemistry and physics and other sciences in the framework of the development of the scientific direction "Geonics" ("Geomimetics").
The presence of these defects is responsible for a higher degree of disorder in the structure [17].
This type of quartz has a layered structure.
Fedorov, Physical chemistry of silicates and other refractory compounds, Moscow, Higher School Publ., 1988 [17] V.S.

Experimental results showed that the as-synthesized CeO2 was in a cubic fluorite structure and presented fiber-like structure.
Fig. 2b and c show the SEM images of two kinds of typical morphologies of the fiber-like CeO2 nanostructures: the hollow tubular structure and the spiral structure.
So, the hollow tubular structure in Fig. 2b and the spiral structure in Fig. 2c were confirmed the structures of cotton fibers, which indicated that the microstructures of the original cotton fibers were recorded by the fiber-like CeO2.
XRD result shows that the as-synthesized product is a cubic fluorite structure of CeO2.
Menachem: Cotton Fiber Chemistry and Technology (Taylor & Francis, Boca Raton 2007) [22] G.

Daw[7] proposed of is not accurate to hcp structure.
The middle part of model appears phase transition from hcp structure to fcc structure, which makes the model longer and thinner obviously.
The phase transition from hcp structure to fcc structure makes the model slender and more plastic.
References [1] Chengming Feng : Chemistry World Vol. 40(12) (1999), p. 663-664,In Chinese [2] Fang Liu : Spectroscopy Laboratory Vol. 28(2) (2011), p. 735-738,In Chinese [3] S.
Shim: International Journal of Solids and Structures Vol. 39(1) (2002), p. 213-224 [5] Qiang Li, Y.B.

The concrete insufficient tightness and resistance to surrounding influences are the main cause of structure damage.
The corrosion inhibitors can be introduced into the structure in several ways.
Technical conditions for the rehabilitation of concrete structures TP SSBK II. 1. edition.
[4] ROVNANÍKOVÁ P., MALÝ: Building chemistry 1. edition Brno: Fakulta stavební VUT v Brně, 1994. 124 pages.
Diagnosis of corrosion in reinforced concrete structures, PhD thesis Brno: BUT, Faculty of Civil Engineering, 2005,158 paged.

A Metaheuristic Approach to Transmembrane Protein Assembly using Limited Distance Restraints Kanon Sujaree1, a and Pornthep Sompornpisut2, b 1Graduate School of Nanoscience and Technology, ChulalongkornUniversity,Bangkok, Thailand 2Department of Chemistry, Faculty of science, ChulalongkornUniversity,Bangkok, Thailand aKanon.su@gmail.com, bPornthep.s@chula.ac.th Keywords: KcsA potassium channel, Genetic algorithm, Max-Min ant system, Root mean square deviation, Transmembrane segment Abstract.
We demonstrated the effectiveness of the present approach, which can correctly generate native-like structure with root-mean square deviation (RMSD)below 3 Å with respect to the x-ray structure.
After structure generation, RMSD of Ca-atoms relative to the referencewas used to measure the difference between the computed structure and the x-ray crystal structure.
Structure models of the tetramer were evaluated based on the penalty function.Pheromone trail (τ) deposited on structure model with the lowest penalty in order to use in the subsequent iteration.
RMSD of the best structure models and their corresponding penalty values.

Liquid/liquid interfacial polymerization to fabricate sulfonated graphene/polyaniline nanocomposite for supercapacitors Qingli Hao*, Hualan Wang, Xujie Yang, Lude Lu, Xin Wang Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, PR China haoqingli@yahoo.com Keywords: graphene, graphene oxide, PANI, supercapacitor, liquid/liquid interfacial polymerization Abstract: A novel method to fabricate sulfonated graphene/polyaniline nanocomposite (SGEP) was developed by liquid/liquid interfacial polymerization.
The component, structure and properties of SGEP were characterized by Fourier transform infrared spectrometer, X-ray diffraction, field emission scanning electron microscopy, transmission electron microscope and electrochemical test techniques.
The structure were analyzed with Fourier transform infrared spectrometer (FT-IR, Bruker Vector 22, using KBr pellets), X-ray diffraction (XRD, Bruker D8 with Cu Ka radiation).
Results and Discussion The structure of the composite are characterized with FT-IR and XRD spectra.

The structures of the as-prepared polymers were confirmed by Ubbelohde viscometer, FTIR, and 1H NMR.
It is suggested that all polymers share the basic molecular structure.
The structures of the as-prepared polymers were confirmed by Ubbelohde viscometer, FTIR, and 1H NMR. β-naphtol is chosen as a model drug.
Perrier, Hyperbranched Polymers by Thiol−Yne Chemistry: From Small Molecules to Functional Polymers, J.

Effect of Ag2O Doping on Some Physical Properties Y145 Superconductor Theerathawan Panklang 1, a *, Rattanasuda Supadanaison 1, b, Chalit Wanichayanan1, c, Adullawich Kaewkao2, d, Tunyanop Nilkamjon2, e, Pongkaew Udomsamuthirun2, f, Somporn Tiyasri3, g, Wirat Wongphakdee3, h, Thitipong Kruaehong4, i, Piyamas Chainok5, j 1Bansomdejchaopraya Rajabhat University, 1061 Soi Itsaraphap 15, Hiranruchi, Thon Buri, Bangkok 10600, Thailand 2Prasarnmit Physics Research Unit, Department of Physics, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand 3Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand 4Department of Physics, Faculty of Science and Technology, Suratthani Rajabhat University, Surat Thani 84100, Thailand 5Department of General Education, Faculty of Science and Technology, Pathumwan Institute of Technology, Bangkok 10330, Thailand atheerathawan@yahoo.com, brattanasuda@yahoo.com, cchalit_59@hotmail.com,
We found that the surface of Y145 superconductor was improved by Ag adding on the porous structure.
From Fig. 2, we found that the surface of Y145 superconductor was improved by Ag adding on the porous structure.
We found that the surface of Y145 superconductor was improved by Ag adding on the porous structure.

Li1 1 School of Aeronautics ,Astronautics & Mechanics, 2 Departpment of Chemistry, Tongji university ,Shanghai ,200092, China Abstract.
Functional core-shell structured composite nanofibers can be fabricated by means of electrospinning of two polymer solvents in a coaxial, two-capillary spinneret system.
The cell-core structure was observed through HITACHI H-600 TEM machine, using an accelerating voltage of 75KV.
This also suggested that the resulting compound nanofibers would have a core-cell structure.

Hercynite (FeAl2O4) with octahedral structure rarely exists in nature and can only be synthesized artificially.
Differently, the structure of hercynite phase is in the shape of circular island with iron phase around it.
However, this hercynite phase begins to present a crystal structure of embryonic form, which means reactions with production of FeO ran more fiercely at 1500℃.
Materials Chemistry and Physics 2002;76 :104–9