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When it comes to studying the structures and defects of materials, there is presently no technique that is superior to positron annihilation.
The work covers (1) Defects in Metals and Semiconductors, (2) Polymers and Chemistry, (3) Slow Positron Beams, Sources and Positron Microscopy, (4) Electronic Structures, Surfaces and Interfaces, (5) Advances in Instrumentation and Methods.

The paper used computer simulations and modeling to study the structures and characteristics of functional materials.
It used first principle theory or molecular dynamics methods to study the electronic structures, conductive properties and their relationship of the cathode material.
First principles calculation of the electronic structure of a material, the band theory or quantum chemistry methods are time consuming, and reliable results is still confined to the ground state and excited states so far calculated The method is small, and the accuracy is limited.
Conclusions In this paper, computer simulation of functional materials, especially energy materials, structure and performance of a number of issues were studied.
Micromagnetic simulation of structure property relations in hard and soft magnets.

X-ray diffraction (XRD) result showed peak of PVA crystal structure due to the thermal treatment, and the addition of surfactant could decrease the average crystallite size of TiO2 in PVA/TiO2 nanocomposite films.
The aim of this work is to study the effect of thermal treatment and surfactants on thermal properties, surface chemistry, crystalline structure and removal efficiency of methylene blue (MB) of PVA/TiO2 nanocomposite films.
The results indicated surfactants, especially SDS improved dispersion stability of nanoparticles. 3.2 Surface chemistry Fig. 2 shows FTIR spectrum of pure PVA and PVA/TiO2 nanocomposite films without and with surfactant.
The XRD spectrum shows anatase structure of TiO2 nanoparticles occurs about 2Ө = 25.3° and the pattern similar to those found in literature [5].
The thermal treatment of all films results in brown color, suggesting formation of conjugated structure.

Ordered Array Structure.
The ordered array structure of composite thin films with optical property were observed.
Li: Chinese Journal of Applied Chemistry Vol. 26 (2009), p. 567
Luo: Chinese Journal of Applied Chemistry Vol. 27 (2010), p. 1047
Spinks: Chemistry of Materials Vol. 21 (2009), p. 513

PbTiO3 has excellent stable perovskite structure under ambient pressure conditions, so it's expected that the addition of PbTiO3 into BiScO3 result in forming more stable perovskite structures under ambient pressure conditions.
It was found that BSPT ceramics below x=0.62 are rhombohedral structures, and turn to tetragonal structure at x=0.62, indicating that the MPB is located near here.
As shown in Fig. 2, all of BSPST samples show tetragonal structure.
The stability of the perovskite structure.
Chen: Modern Crystal Chemistry-Theories and Technique (High Education Press, Beijing 2001), pp.93, 111.

SENOKOSOV: RUSSIAN JOURNAL OF APPLIED CHEMISTRY VOL. 9, № 5 (1936), P. 889-894
BOLTENKOV: RUSSIAN JOURNAL OF APPLIED CHEMISTRY VOL. 29, № 2 (1956), P. 260-264
STRELKO: RUSSIAN JOURNAL OF APPLIED CHEMISTRY VOL. 74, № 4 (2001), P. 592-595
SHOTT: VEGETABLE STOCK CHEMISTRY № 2 (2002), P. 47-51
GREBEN’: RUSSIAN JOURNAL OF APPLIED CHEMISTRY V. 8, № 7 (2007), P. 1170-1174

This sandwich structure of Si-SiO2-Si3N4 resembles the typical build up of an H + -sensitive ISFET gate region.
Cell adhesion (cells / cm 2) to each surface chemistry.
It was qualitatively observed that cell growth was suppressed on the CH3 chemistry and that cells more often grew in clusters on this chemistry.
Si3N4 performed similar to the other chemistries.
After five days in culture, a confluent layer was observed on all chemistries.

Controllable preparation Cu2O/AC and application in photocatalytic degradation of organic dyes Zhenwei Wang 1,a, Yajie Guo 1, b *, Fangfang Kang 1, c, Qingxi Cao 1, d, and Guangjian Wang 1,2,e * 1School of chemistry and materials science, Huaibei Normal University, Anhui, P.R.
China 2Department of chemistry, school of physical science.
The sample was characterized by chemistry analysis, SEM, XRD and so on.
The activated carbon with graphite type layer microcrystalline structure has rich pore structure, specific surface area and crystal defect, which make it not only has the adsorption ability, but also has certain catalytic oxidation and reduction, which is widely used in petroleum chemical industry, printing and dyeing, medicine, chemical engineering and industrial wastewater treatment.
Active carbon as the carrier of photocatalytic not only can dispersed active component of the catalyst and also can affect the activity of the catalyst via carbon materials and active component interaction[6-7] due to its high specific surface area, rich pore structure and unique surface chemical properties.

China. 1,2 State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, P.
China. 3 College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, P.R.
Telomeres are specialized class of functional DNA-protein structures [2].
Chemical structure of ofloxacin.
For the degree of Doctor of Medicinal Chemistry at SUN YAT-SEN UNIVERSITY, 2010

In this work, we synthesized graphene nanosheets via a soft chemistry synthetic route involving pre-exfoliation treatment, strong oxidation, and post thermal exfoliation.
X-ray diffraction (XRD), Raman spectroscopy, atomic force microscopy (AFM), and transmission electron microscopy (TEM) confirmed the ordered graphite crystal structure and morphology of graphene nanosheets.
For natural graphite and EG, the sharp and intensive peak at 2θ=26.6° indicated a highly organized crystal structure with an interlayer spacing of 0.34 nm (Fig. 2).
In contrast, no apparent peaks were detected in the patterns for EGO and EGN, which might be attributed to two reasons: (a) very thin EGO and graphene layers due to high degree of exfoliation; and (b) disordered structure of EGO and graphene caused by the attachment of oxygenated functional groups.
Summary In this work, we synthesized graphene nanosheets via a soft chemistry synthetic route involving pre-exfoliation treatment, strong oxidation, and post thermal exfoliation.