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Synchrotron X-ray absorption near- edge structure (XANES) experiments were performed on Mn-doped BaTiO3 samples.
We have known very little about the electrical properties and defect chemistry of the high temperature hexagonal (6H) polymorph, h-BaTiO3, which is stable above ~1460 ºC in undoped BaTiO3 [4].
Since the valence state of Mn plays an important role in determining the crystal structure and over all properties of Mn-doped BaTiO3, therefore, it is important to identify the local structure of Mn in BaTiO3 lattice.
XANES is very sensitive to the local structure around the interested atom.
Synchrotron X-ray absorption near-edge structure (XANES) experiments were performed on Mn-doped BaTiO3 samples.

These structure calculations of the apatite were carried out using the CRYSTAL code.
It is the temperature that the amorphous material begins to have a crystalline structure.
Radiation Physics and Chemistry, 61, 645-647
Retention of radon by apatite structure: the case for sedimentary phosphate.
Elastic constants and electronic structure of fluorite (CaF2): an ab initio Hartree-Fock study.

FTIR spectrum peaks correspond to molecular vibrations and chemical bonds, indicate the presence of silver in the PVA polymer structure.
Measurement of theabsorption spectrum is the most direct method to investigate the band structure of materials.
Sharma et al., Materi- als Chemistry and Physics, vol. 134, no. 2-3, pp. 1121–1126, 2012
Journal of Cluster Science, Vol. 12, No. 3, September 2001. 457-471 [35] N.Singh and P.K.Khanna, Materials Chemistry and Physics,vol.104,no. 2-3, pp. 367–372, 2007
Satyanarayana, Materials Chemistry and Physics, vol. 92, no.1, pp. 229–233, 2005

One-pot Synthesis of 1-Benzoylpyrene over Heteropoly Acid Catalysts Xiaoqing Lua*,Min Xinga, Aixia Pana, Yinyin Wua, Jimin Xiea, Min Chena aSchool of Chemistry and Chemical Engineering, Jiangsu University, Jiangsu, China raindrop@ujs.edu.cn Keywords:1-benzoylpyrene; Friedel–Crafts acylation; pyrene; heteropoly acids; catalysis Abstract.
Pure 1-benzoylpyrene was obtained and the structure of 1-benzoylpyrene was identified by GC/MS, FT-IR and 1H NMR spectra.
[4] Okuhara, T., Mizuno, N., Misono, M., Catalytic Chemistry of Heteropoly Compounds, Advances in Catalysis, 41 (1996) 113−225

The crystalline structure of the nanostructures was examined using X-ray Diffraction (XRD) BRUKER D8 ADVANCE from Archaeology Laboratory Universiti Sains Malaysia, and their interaction with light was analyzed using Ultraviolet-Visible Spectroscopy (UV VIS) Solid Lambada 35 from School of Chemical Sciences Universiti Sains Malaysia.
The breadth and low intensity of these peaks indicate a predominantly amorphous carbon structure with short-range graphitic domains.
The superior performance of GomCNp650 reflects its balanced pore architecture, maximal π-π domain density, and optimized surface chemistry.
Al-Ghouti, “Recent advances in the treatment of PAHs in the environment: Application of nanomaterial-based technologies,” Arabian Journal of Chemistry, vol. 15, no. 7, p. 103918, Jul. 2022, doi: 10.1016/j.arabjc.2022.103918
Xing, “The effect of activation temperature on structure and properties of blue coke-based activated carbon by CO2 activation,” Green Processing and Synthesis, vol. 8, no. 1, pp. 837–845, Jan. 2019, doi: 10.1515/gps-2019-0054

However the effect of the seismicity on the vicinity of the underground structure it is consider the results of seismic loadings on the own underground structure in several cases (the structures with low overburden).
A typical structure of that kind is a tunnel surrounded by a rock.
The problem defined in solid medium links chemistry, shock waves (gas dynamics) and temperature.
Krauthammer, Combined Finite Difference/Finite Element Analysis for Soil Structure Interaction, Proc. of the Structure Congress, Orlando (FL, USA), pp. 485-496, 1987 [9] A.
Solids Structures 36 (1999) 3917-3976

Introduction In organic chemistry, the growth of new compounds and synthetic reactions is so amazingly rapid that produces a huge amount of information in need of processing and makes the organic synthesis route design becoming quite complex.
There are two kinds of representations for the molecular structure through computers: Linear Notation Systems [1] and Topo-logic Systems.
For storing the files: so far, there are many and varied file formats to store the molecular structure and the chemical reaction.
This paper puts forward the XML file format for storing chemical structure.
Geivandov, “A Language for Notation of Generalised Structures of Organic Compounds Containing Alternative Delocated Fragments (Markush Structures)”, Nauchno-Tekh.

X-ray diffraction of the synthesized ZnO shows hexagonal zincite structure.
All the diffraction peak can be indexed to the hexagonal structured ZnO according to the standard JCPDS (No. 36-1451) cards.
This confirms that the solid is crystalline wurtzite structure which possess a perfect hexagonal surface throughout their lengths which confirm that the nanorods are hexagonal in crystal structure (Fig. 1a) related to the FESEM result [12, 16].
ZnO was successfully formed as nanorods and nanoflower structures depending on the stabilizer.
Rusop: Chemistry 40 (2010), p. 190–194 [13] G.S.

The structure and microscopic morphology of waste forms didn't change significantly before and after irradiation according to the XRD spectra, SEM photos.
The samples were irradiated by the β-ray irradiation equipment offered by Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics and the cumulative dose of irradiation was 106Gy. 2.4.
Isomorphous substitution phenomenon exists in the crystal chemistry, that is, a particle in crystal structure (atoms, ions, molecules) can be replaced by similar types of particles which only makes lattice constant change a little, and the structure remain the same.
With increasing amount of SrO, the lattice structure of the cured body became disorder to a certain degree after irradiation.
In order to observe changes in the crystal structure of the samples after irradiation, using checkcell software to refine the structure of TiC and Al2O3, the calculation results were shown in Table 2 and 3.

Hierarchical porous hollow microsphere for drug release Hu Liu1, Fajia Liu1, Jianjun Shi1, Hui Chen1, Haifeng Bao2, b , Yongsong Liu1, a 1Department of Physics, College of Science Zhejiang Sci-Tech University, Hangzhou 310018. 2College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, Zhejiang, 310036, P.
The hierarchal porous structure had high capacity, and could control the drug loading and releasing not only from the penetrating channel between the networked nanotubes, but also from the channel of the tube structure.
SiO2 Sphere SiO2@TiO2 core/shell structure Nanotube hollow sphere Scheme 1.
Figure 1c showed the image of as-synthesized uniform SiO2@TiO2 core-shell structures.
The hierarchal porous structure could control the loading and releasing not only from the penetrating channel between the networked nanotubes, but also from a secondary space/channel, the tube structure itself.